Updated through February 2022.
Utility companies and grid operators are required to submit reports on electric disturbance events to the Department of Energy (DOE) on a form known as an OE-417. The publicly available information from these reports is difficult to find, incomplete and confusing. For a detailed description of OE-417s and the reporting criteria, CLICK HERE.
I did an analysis of all the publicly available OE-417 data from January 1, 2010 through the present. (I started in 2010 because that is when the NERC CIP Coverup began.) First of all, there were 166 different “event types” reported many of which were either duplicates or related. For example, there were at least 24 different “event types” that denoted a physical attack. There were at least 50 “event types” that denoted a disturbance caused by weather. I grouped these 166 “event types” into 15 categories (actually “causes”) so that we could get a sense of what has actually threatened the electric grid in the past 10 years.
Unfortunately, the public OE-417 data is so bad that there were 562 electric disturbance events where I was unable to identify a cause. These are highlighted in yellow in the chart. I was able to identify a cause in 2127 electric disturbance events, or 80% of the OE-417 reports filed. Moreover, some data such as the number of “customers affected” does not appear accurate in some cases. Many OE-417’s do not appear to be updated. Reports from years ago show “unknown” under the number of customers affected, or show “0” when we know there were blackouts associated with those events.
Note: After the Texas Grid Collapse of 2021, I started breaking out separate charts for the TRE Region (Texas Reliability Entity a.k.a. Texas RE) in order to give the public better access to what has caused electric disturbances in Texas.
Here is another view of the data by year. Electric disturbance events where I was unable to identify a cause are highlighted in yellow in the chart:
In the below OE-417 Quick Reference Database and CSV file, I added the column “Category” in order to consolidate “Event Types” for statistical purposes. All other data is from Department of Energy (DOE) OE-417 annual summaries.
To Download a CSV file with all columns, Click HERE.
OE-417 Electric Disturbance Events
This quick reference database of OE-417 Electric Disturbance Events is consolidated from Department of Energy (DOE) Annual Summaries. I only have room for a few columns below. To download the complete spreadsheet, click the link above. You can search for a NERC Region, such as: TRE or for a state, like: Texas (full name).| Date Event Began | Area Affected | NERC Region | Event Type | Number of Customers Affected | Category |
|---|---|---|---|---|---|
| 2022-02-28 | Texas: Mitchell County; | TRE | Vandalism | 0 | Physical Attack |
| 2022-02-26 | Washington: Grant County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2022-02-25 | Texas: Travis County; California: San Diego County; | TRE | System Operations | 0 | Operations |
| 2022-02-24 | California: San Bernardino County, Kern County, Solano County, San Diego County; | WECC | System Operations | 0 | Operations |
| 2022-02-24 | Texas: Montgomery County; | TRE | Transmission Interruption | 1405 | Transmission Interruption |
| 2022-02-22 | Texas: Llano County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2022-02-18 | Connecticut: Maine: Massachusetts: New Hampshire: Vermont: Rhode Island: | NPCC | Severe Weather | 7047 | Weather |
| 2022-02-17 | Louisiana: Lafayette Parish; | SERC | System Operations | 0 | Operations |
| 2022-02-17 | Rhode Island: Providence County[13]; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2022-02-12 | California: Alameda County; | WECC | Vandalism | Unknown | Physical Attack |
| 2022-02-09 | New York: Orange County; | NPCC | Vandalism | 0 | Physical Attack |
| 2022-02-04 | Texas: | TRE | Transmission Interruption | Unknown | Transmission Interruption |
| 2022-02-04 | New York: Ulster County; | NPCC | Severe Weather/Transmission Interruption | 67404 | Weather |
| 2022-02-03 | Tennessee: Shelby County; | SERC | Severe Weather/Transmission Interruption | 255000 | Weather |
| 2022-02-03 | Ohio: | RF | Severe Weather/Transmission Interruption | 51000 | Weather |
| 2022-02-03 | Ohio: | RF | Severe Weather/Transmission Interruption | 51000 | Weather |
| 2022-02-01 | California: Yuba County; | WECC | System Operations | 8124 | Operations |
| 2022-01-31 | West Virginia: Monongalia County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2022-01-30 | Nebraska: | MRO | System Operations | 0 | Operations |
| 2022-01-29 | Connecticut: Massachusetts: New Hampshire: Rhode Island: Vermont: Maine: | NPCC | Severe Weather | 12000 | Weather |
| 2022-01-28 | Colorado: Douglas County, Pueblo County, El Paso County, Prowers County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2022-01-27 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2022-01-26 | Florida: Leon County; | SERC | System Operations | 0 | Operations |
| 2022-01-24 | Washington: Chelan County; | WECC | System Operations | 0 | Operations |
| 2022-01-24 | New York: Dutchess County, Greene County; | NPCC | Sabotage | 0 | Physical Attack |
| 2022-01-23 | Pennsylvania: Westmoreland County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2022-01-20 | Maine: | NPCC | System Operations | 0 | Operations |
| 2022-01-20 | Mississippi: Arkansas: Louisiana: Texas: | TRE/SERC | Severe Weather | 0 | Weather |
| 2022-01-19 | Maine: | NPCC | System Operations | 0 | Operations |
| 2022-01-18 | Texas: Harris County; | TRE | Cyber Event | 0 | Cyber Attack |
| 2022-01-16 | North Carolina: Jackson County; South Carolina: Greenville County; | SERC | Severe Weather | 51289 | Weather |
| 2022-01-16 | North Carolina: South Carolina: | SERC | Severe Weather | 74638 | Weather |
| 2022-01-16 | Georgia: Alabama: | SERC | Severe Weather | 61113 | Weather |
| 2022-01-15 | New York: Orange County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2022-01-15 | Texas: Potter County; New Mexico: | TRE/WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2022-01-14 | Pennsylvania: Bucks County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2022-01-13 | Massachusetts: Hampden County[13]; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2022-01-12 | Indiana: Kentucky: Ohio: | SERC/RF | System Operations | Unknown | Operations |
| 2022-01-09 | Mississippi: Adams County; | SERC | System Operations | Unknown | Operations |
| 2022-01-08 | Texas: Cameron County, Willacy County; | TRE | System Operations | 0 | Operations |
| 2022-01-08 | Florida: Citrus County; | SERC | Vandalism | 0 | Physical Attack |
| 2022-01-08 | New Hampshire: Merrimack County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2022-01-05 | Massachusetts: Plymouth County; | NPCC | System Operations | 0 | Operations |
| 2022-01-03 | Washington: Thurston County; | WECC | Vandalism | 0 | Physical Attack |
| 2022-01-03 | South Carolina: | SERC | Severe Weather | 60424 | Weather |
| 2022-01-03 | North Carolina: South Carolina: | SERC | Severe Weather | 142000 | Weather |
| 2022-01-03 | Georgia: Alabama: Mississippi: | SERC | Severe Weather | 40885 | Weather |
| 2022-01-02 | California: Tuolumne County; | WECC | Severe Weather | 1706 | Weather |
| 2022-01-01 | Washington: Thurston County; | WECC | System Operations | 0 | Physical Attack |
| 2022-01-01 | Washington: Thurston County; | WECC | System Operations | 0 | Physical Attack |
| 2022-01-01 | Georgia: Clayton County; | SERC | Vandalism | 0 | Physical Attack |
| 2022-01-01 | New Hampshire: Merrimack County; | NPCC | Suspicious Activity | 845 | Physical Attack |
| 2021-12-30 | Missouri: Adair County, Putnam County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-12-29 | Nevada: Clark County; | WECC | System Operations | 0 | Operations |
| 2021-12-27 | California: Humboldt County; | WECC | System Operations | 65994 | Operations |
| 2021-12-27 | California: | WECC | Severe Weather | 115830 | Weather |
| 2021-12-24 | Texas: Rusk County; | TRE | System Operations | Unknown | Operations |
| 2021-12-23 | Massachusetts: Suffolk County[13]; | NPCC | System Operations | 0 | Operations |
| 2021-12-23 | Pennsylvania: York County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-12-21 | Texas: Cameron County; | TRE | System Operations | Unknown | Operations |
| 2021-12-19 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-12-18 | California: | WECC | Suspicious Activity | 11770 | Physical Attack |
| 2021-12-16 | Michigan: Antrim County, Kalkaska County, Grand Traverse County, Leelanau County, Benzie County, Manistee County, Wexford County, Missaukee County, Lake County, Osceola County, Oceana County, Newaygo County, Mecosta County, Emmet County, Charlevoix County, Cheboygan County, Clare County, Roscommon County, Crawford County, Ogemaw County; | MRO | Severe Weather | 200675 | Weather |
| 2021-12-15 | Nebraska: Burt County; | MRO | System Operations | Unknown | Operations |
| 2021-12-15 | Kansas: | MRO | Severe Weather | 174000 | Weather |
| 2021-12-15 | Iowa: Wisconsin: | MRO | Severe Weather | 134000 | Weather |
| 2021-12-15 | Missouri: Kansas: | SERC/MRO | Severe Weather | 258000 | Weather |
| 2021-12-15 | Wisconsin: | MRO | Severe Weather | 80000 | Weather |
| 2021-12-15 | Wisconsin: | MRO | Severe Weather | 156000 | Weather |
| 2021-12-15 | Iowa: Minnesota: | MRO | Severe Weather | Unknown | Weather |
| 2021-12-15 | Missouri: Kansas: | SERC/MRO | Severe Weather | Unknown | Weather |
| 2021-12-14 | Washington: Chelan County; | WECC | System Operations | 0 | Operations |
| 2021-12-14 | California: Humboldt County; | WECC | Severe Weather | 65994 | Weather |
| 2021-12-12 | Louisiana: De Soto Parish; | SERC | Vandalism | Unknown | Physical Attack |
| 2021-12-11 | Tennessee: Davidson County, Sumner County; | SERC | Severe Weather | 107344 | Weather |
| 2021-12-11 | New York: | NPCC | Severe Weather | 103000 | Weather |
| 2021-12-11 | Michigan: | MRO | Severe Weather | 182410 | Weather |
| 2021-12-11 | Michigan: Van Buren County, Gladwin County, Montcalm County, Branch County, Allegan County, Ionia County, Newaygo County, Mecosta County, Lake County, Midland County, Ogemaw County, Osceola County, Tuscola County; | MRO | Severe Weather | 159947 | Weather |
| 2021-12-10 | Idaho: Ada County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-12-08 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2021-12-07 | Indiana: Putnam County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2021-12-02 | Texas: | TRE | System Operations | 0 | Operations |
| 2021-12-01 | Wisconsin: Eau Claire County; | MRO | System Operations | 0 | Operations |
| 2021-11-30 | North Carolina: South Carolina: | SERC | System Operations | 0 | Operations |
| 2021-11-30 | California: | WECC | System Operations | 6000 | Operations |
| 2021-11-30 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-11-30 | Oregon: Multnomah County; Washington: Idaho: Utah: Wyoming: | WECC | Vandalism | 0 | Physical Attack |
| 2021-11-24 | California: Riverside County, Ventura County, San Bernardino County, Orange County, Los Angeles County; | WECC | Severe Weather | 81406 | Weather |
| 2021-11-21 | Wisconsin: | MRO/RF | Cyber Event | 0 | Cyber Attack |
| 2021-11-17 | Michigan: Wexford County; | RF | System Operations | 0 | Operations |
| 2021-11-17 | Colorado: Larimer County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-11-16 | Maryland: Baltimore County; | RF | System Operations | 0 | Operations |
| 2021-11-16 | California: Los Angeles County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-11-15 | Colorado: Larimer County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-11-15 | Washington: King County, Kitsap County, Whatcom County, Thurston County, Pierce County; | WECC | Severe Weather | 90000 | Weather |
| 2021-11-12 | Oregon: Multnomah County; Washington: Idaho: Utah: Wyoming: | WECC | Vandalism | 0 | Physical Attack |
| 2021-11-11 | Texas: Montgomery County; | TRE | System Operations | Unknown | Operations |
| 2021-11-10 | Texas: Brazos County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2021-11-10 | New York: | NPCC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-11-09 | Indiana: Floyd County; | RF | Vandalism | 0 | Physical Attack |
| 2021-11-09 | Mississippi: Coahoma County; | SERC | System Operations | Unknown | Public Appeal |
| 2021-11-08 | Washington: King County; | WECC | System Operations | Unknown | Operations |
| 2021-11-06 | Pennsylvania: York County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-11-06 | Washington: Grant County; | WECC | Suspicious Activity | 350 | Physical Attack |
| 2021-11-04 | Montana: Hill County; | WECC | System Operations | Unknown | Operations |
| 2021-10-31 | California: Alameda County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-10-30 | New Jersey: | RF | Suspicious Activity | Unknown | Physical Attack |
| 2021-10-29 | Vermont: Lamoille County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2021-10-28 | Montana: Valley County; | WECC | System Operations | 0 | Operations |
| 2021-10-28 | Texas: Haskell County; | TRE | Actual Physical Attack/Vandalism | Unknown | Physical Attack |
| 2021-10-28 | Texas: Angelina County, Bell County, Cherokee County, Collin County, Denton County, Dallas County, Ellis County, Hunt County, Johnson County, McLennan County, Nacogdoches County, Smith County, Tarrant County, Travis County, Williamson County; | TRE | Severe Weather | 250000 | Weather |
| 2021-10-28 | Texas: Harris County; | TRE | Severe Weather | 130000 | Weather |
| 2021-10-27 | Louisiana: Ascension Parish; | SERC | System Operations | 0 | Operations |
| 2021-10-27 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 169000 | Weather |
| 2021-10-24 | California: | WECC | Severe Weather | 59000 | Weather |
| 2021-10-24 | Washington: King County, Pierce County, Skagit County, Thurston County; | WECC | Severe Weather | 233000 | Weather |
| 2021-10-22 | Louisiana: Lafayette Parish; | SERC | System Operations | 0 | Operations |
| 2021-10-20 | Wisconsin: Eau Claire County; | MRO/RF | System Operations | 0 | Operations |
| 2021-10-19 | Ohio: Summit County; | RF | System Operations | 1 | Operations |
| 2021-10-18 | Pennsylvania: | RF | System Operations | 0 | Operations |
| 2021-10-18 | Pennsylvania: Montgomery County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-10-18 | Georgia: DeKalb County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2021-10-18 | Missouri: Boone County; | SERC/MRO | Suspicious Activity | 0 | Physical Attack |
| 2021-10-18 | Florida: Putnam County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-10-16 | Oregon: Lane County; | WECC | Transmission Interruption | Unknown | Transmission Interruption |
| 2021-10-12 | Illinois: Cook County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-10-11 | California: | WECC | Severe Weather | 84000 | Weather |
| 2021-10-10 | Texas: Collin County, Dallas County, Denton County, Ellis County, Hunt County, Johnson County, Palo Pinto County, Tarrant County, Wichita County; | TRE | Severe Weather | 110000 | Weather |
| 2021-10-09 | North Carolina: | SERC | System Operations | 0 | Operations |
| 2021-10-08 | Ohio: Cuyahoga County; | RF | System Operations | 0 | Operations |
| 2021-10-08 | Maryland: Baltimore County; | RF | Vandalism | 0 | Physical Attack |
| 2021-10-08 | California: Contra Costa County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-10-05 | California: Santa Clara County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-10-05 | California: Santa Clara County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-10-04 | Utah: Uintah County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-10-03 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-09-29 | Missouri: Jackson County; | MRO/SERC | System Operations | 0 | Operations |
| 2021-09-28 | Kentucky: Henderson County; | SERC | Transmission Interruption | 5000 | Transmission Interruption |
| 2021-09-22 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-09-22 | Michigan: Lenawee County, Livingston County, Genesee County, Tuscola County, Huron County, Sanilac County, Lapeer County, St. Clair County, Macomb County, Oakland County, Washtenaw County, Wayne County, Monroe County; | RF | Severe Weather | 136000 | Weather |
| 2021-09-18 | Indiana: Hamilton County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-09-17 | Indiana: | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-09-17 | Washington: Pierce County, Whatcom County, Skagit County, King County; | WECC | Severe Weather/Transmission Interruption | 87000 | Weather |
| 2021-09-17 | Minnesota: | MRO | Severe Weather | 82000 | Weather |
| 2021-09-16 | Oklahoma: | MRO/SERC | Transmission Interruption | 4000 | Transmission Interruption |
| 2021-09-16 | Oklahoma: | MRO/SERC | Transmission Interruption | 4000 | Transmission Interruption |
| 2021-09-15 | Texas: Kentucky: Arizona: New Mexico: Oregon: Washington: | TRE/SERC/WECC | System Operations | 0 | Operations |
| 2021-09-14 | Texas: Harris County; | TRE | Severe Weather | 705415 | Weather |
| 2021-09-14 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-09-14 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-09-13 | Washington: Skagit County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-09-13 | Texas: Midland County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2021-09-13 | Texas: Harris County; | TRE | Severe Weather | 204280 | Weather |
| 2021-09-13 | Texas: Harris County; | TRE | Severe Weather | 66589 | Weather |
| 2021-09-11 | Texas: Austin County; California: Los Angeles County; | TRE/SERC | Actual Physical Attack | 0 | Physical Attack |
| 2021-09-10 | Iowa: Polk County; | MRO | Vandalism | 0 | Physical Attack |
| 2021-09-10 | North Dakota: McKenzie County; | MRO | Transmission Interruption | 1 | Transmission Interruption |
| 2021-09-10 | California: | WECC | Severe Weather | 59649 | Weather |
| 2021-09-10 | Florida: Citrus County; | SERC | Severe Weather | Unknown | Weather |
| 2021-09-09 | Nevada: Clark County, Washoe County; | WECC | System Operations | 1300000 | Operations |
| 2021-09-09 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2021-09-08 | North Dakota: Cass County; | MRO | Transmission Interruption | 1 | Transmission Interruption |
| 2021-09-07 | Michigan: Osceola County, Kalamazoo County, Van Buren County, Saginaw County, Arenac County, Lake County, Clare County, Mecosta County; | RF | Severe Weather | 80000 | Weather |
| 2021-09-07 | Michigan: Wayne County; | RF | Severe Weather | 60000 | Weather |
| 2021-09-02 | Texas: Williamson County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-09-01 | California: Santa Clara County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-09-01 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather | 252740 | Weather |
| 2021-08-30 | Florida: Leon County; | SERC | Actual Physical Attack | 0 | Physical Attack |
| 2021-08-29 | New York: | NPCC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-08-29 | Louisiana: Pointe Coupee Parish; | SERC | Transmission Interruption | Unknown | Transmission Interruption |
| 2021-08-29 | Louisiana: | SERC | Severe Weather | Unknown | Weather |
| 2021-08-29 | Louisiana: St. Charles Parish; | SERC | Severe Weather | Unknown | Weather |
| 2021-08-29 | Louisiana: | SERC | Severe Weather | 91315 | Weather |
| 2021-08-29 | Louisiana: | SERC | Severe Weather | 50000 | Weather |
| 2021-08-29 | Louisiana: | SERC | Severe Weather | Unknown | Weather |
| 2021-08-27 | Arkansas: Pulaski County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2021-08-24 | Michigan: Huron County, Lapeer County, Macomb County, Monroe County, Oakland County, St. Clair County, Wayne County, Washtenaw County; | RF | Severe Weather | 65000 | Weather |
| 2021-08-24 | Michigan: Arenac County, Bay County, Clare County, Genesee County, Gladwin County, Gratiot County, Isabella County, Iosco County, Kalamazoo County, Kent County, Barry County, Missaukee County, Montcalm County, Muskegon County, Newaygo County, Mecosta County, Midland County, Saginaw County, Ottawa County, Van Buren County; | RF | Severe Weather | 84987 | Weather |
| 2021-08-22 | Connecticut: Massachusetts: Maine: Rhode Island: Vermont: | NPCC | Severe Weather | 28134 | Weather |
| 2021-08-21 | Idaho: Elmore County; | WECC | Severe Weather | 418 | Weather |
| 2021-08-20 | California: Nevada County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-08-20 | Oregon: Washington: Idaho: Utah: Salt Lake County; Wyoming: | WECC | Vandalism | 0 | Physical Attack |
| 2021-08-18 | Texas: | TRE | System Operations | 0 | Operations |
| 2021-08-17 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-08-17 | California: Butte County, Colusa County, Glenn County, Lake County, Lassen County, Mendocino County, Napa County, Plumas County, Shasta County, Sierra County, Solano County, Sonoma County, Tehama County, Trinity County, Yolo County; | WECC | Severe Weather | 71000 | Weather |
| 2021-08-16 | Montana: Flathead County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-08-15 | California: Solano County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2021-08-12 | Massachusetts: | NPCC | System Operations | 0 | Operations |
| 2021-08-12 | Illinois: Missouri: | RF/SERC | Severe Weather | 101000 | Weather |
| 2021-08-11 | Michigan: Huron County, Macomb County, Lapeer County, Macomb County, Monroe County, Oakland County, St. Clair County, Tuscola County, Wayne County, Washtenaw County, Livingston County; | RF | Severe Weather | 700000 | Weather |
| 2021-08-11 | Ohio: | RF | Severe Weather | 92109 | Weather |
| 2021-08-10 | Michigan: Allegan County, Antrim County, Barry County, Benzie County, Branch County, Calhoun County, Clare County, Clinton County, Crawford County, Eaton County, Genesee County, Gladwin County, Grand Traverse County, Gratiot County, Hillsdale County, Ingham County, Ionia County, Isabella County, Jackson County, Kalamazoo County, Kalkaska County, Kent County, Lake County, Leelanau County, Manistee County, Mason County, Mecosta County, Midland County, Missaukee County, Montcalm County, Muskegon County, Newaygo County, Oakland County, Oceana County, Ogemaw County, Osceola County, Oscoda County, Otsego County, Ottawa County, Roscommon County, Saginaw County, Shiawassee County, St. Joseph County, Van Buren County, Wexford County; | RF | Severe Weather | 372600 | Weather |
| 2021-08-10 | Illinois: | RF/SERC | Severe Weather | 318761 | Weather |
| 2021-08-10 | Wisconsin: Waukesha County, Milwaukee County, Kenosha County, Racine County, Washington County, Ozaukee County; | RF/SERC | Severe Weather | 233000 | Weather |
| 2021-08-03 | Oregon: Linn County; | WECC | System Operations | Unknown | Operations |
| 2021-08-03 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-08-02 | Texas: Hays County; | TRE | Severe Weather/Transmission Interruption | 19000 | Weather |
| 2021-08-02 | Texas: Hays County; | TRE | Severe Weather/Transmission Interruption | 9400 | Weather |
| 2021-08-01 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-08-01 | California: Humboldt County, Trinity County; | WECC | Severe Weather | 65888 | Weather |
| 2021-07-30 | Wisconsin: | MRO | Cyber Event | 0 | Cyber Attack |
| 2021-07-28 | Maine: | NPCC | System Operations | 0 | Operations |
| 2021-07-26 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-07-24 | Michigan: Wayne County, Oakland County, Livingston County, Macomb County; | RF | Severe Weather | 225949 | Weather |
| 2021-07-23 | Minnesota: Hennepin County; | MRO/RF | System Operations | 3500 | Operations |
| 2021-07-23 | Virginia: West Virginia: | RF/SERC | System Operations | 0 | Operations |
| 2021-07-22 | California: Shasta County; | WECC | System Operations | 0 | Operations |
| 2021-07-21 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather | 81503 | Weather |
| 2021-07-20 | Ohio: | RF | System Operations | 0 | Operations |
| 2021-07-18 | Illinois: Cook County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2021-07-14 | California: Plumas County; | WECC | Severe Weather/Transmisison Interruption | 11000 | Weather |
| 2021-07-12 | Colorado: Pueblo County; | WECC | Sabotage | 0 | Physical Attack |
| 2021-07-11 | Nevada: Clark County, Washoe County; | WECC | Transmission Interruption | 1300000 | Public Appeal |
| 2021-07-10 | Nevada: Clark County, Washoe County; | WECC | Transmission Interruption | 1300000 | Public Appeal |
| 2021-07-10 | Nebraska: Missouri: | MRO/SERC | Severe Weather/Transmisison Interruption | 211500 | Weather |
| 2021-07-10 | Nebraska: | MRO | Severe Weather | 188000 | Weather |
| 2021-07-10 | Missouri: | SERC | Severe Weather | 52000 | Weather |
| 2021-07-10 | Missouri: Nebraska: | MRO/SERC | Severe Weather/Transmisison Interruption | 212500 | Weather |
| 2021-07-09 | California: | WECC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-07-09 | California: Shasta County; | WECC | Severe Weather | 47000 | Weather |
| 2021-07-08 | New York: | NPCC | Severe Weather/Transmisison Interruption | 0 | Weather |
| 2021-07-08 | North Dakota: Stark County; | MRO | Severe Weather/Transmisison Interruption | 0 | Weather |
| 2021-07-07 | Michigan: Macomb County, Oakland County, Monroe County, Livingston County, St. Clair County, Washtenaw County, Wayne County; | RF | Severe Weather | 90000 | Weather |
| 2021-07-06 | Ohio: | RF | Severe Weather/Transmisison Interruption | 136827 | Weather |
| 2021-07-06 | Florida: Polk County; | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-07-05 | New York: | NPCC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-07-05 | Ohio: Kentucky: | RF/SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-07-04 | Washington: Chelan County; | WECC | Natural Disaster | 0 | Natural Disaster |
| 2021-07-03 | New Mexico: Bernalillo County; | WECC | Vandalism | 34509 | Physical Attack |
| 2021-06-30 | Connecticut: Massachusetts: Rhode Island: Vermont: New Hampshire: Maine: | NPCC | Severe Weather | 53103 | Weather |
| 2021-06-29 | Michigan: Oakland County, Macomb County, Wayne County; | RF | Severe Weather | 53000 | Weather |
| 2021-06-28 | North Carolina: | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-06-28 | Washington: Spokane County, Stevens County, Lincoln County, Adams County, Whitman County; Idaho: Kootenai County, Bonner County, Shoshone County, Boundary County, Benewah County, Latah County, Nez Perce County; | WECC | Severe Weather | Unknown | Weather |
| 2021-06-27 | New York: Jefferson County; | NPCC | Vandalism | 982 | Physical Attack |
| 2021-06-27 | North Dakota: Morton County; | MRO | Vandalism | 1,003 | Physical Attack |
| 2021-06-24 | Washington: Kittitas County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-06-24 | California: Plumas County; | WECC | Transmission Interruption | 7621 | Transmission Interruption |
| 2021-06-23 | Missouri: Boone County; | SERC | System Operations | 0 | Operations |
| 2021-06-21 | Arkansas: Benton County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2021-06-21 | Michigan: | RF | Severe Weather | 151852 | Weather |
| 2021-06-19 | California: Alameda County; | WECC | System Operations | 51806 | Operations |
| 2021-06-16 | Maine: | NPCC | System Operations | 0 | Operations |
| 2021-06-16 | Florida: Alachua County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-06-16 | Louisiana: West Baton Rouge Parish; | SERC | Transmission Interruption | 1841 | Transmission Interruption |
| 2021-06-15 | Texas: | TRE | Cyber Event | Unknown | Cyber Attack |
| 2021-06-15 | Kansas: Wyandotte County; | MRO | System Operations | 0 | Operations |
| 2021-06-14 | Utah: Salt Lake County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-06-14 | Texas: | TRE | System Operations | Unknown | Public Appeal |
| 2021-06-14 | Texas: | TRE | System Operations | Unknown | Public Appeal |
| 2021-06-11 | South Dakota: Brown County; | MRO | Severe Weather/Transmission Interruption | 0 | Weather |
| 2021-06-10 | Kansas: Wyandotte County; | MRO | Transmission Interruption | 9800 | Transmission Interruption |
| 2021-06-09 | New Mexico: San Juan County; | WECC | System Operations | 0 | Operations |
| 2021-06-08 | Texas: Liberty County; | TRE | Vandalism | 0 | Physical Attack |
| 2021-06-07 | Texas: Somervell County, Ellis County; | TRE | Generation Inadequacy | 0 | Generation Interruption |
| 2021-06-07 | New Mexico: San Juan County; | WECC | System Operations | 0 | Operations |
| 2021-06-07 | Minnesota: North Dakota: | MRO | Severe Weather/Transmission Interruption | 1 | Weather |
| 2021-06-06 | Indiana: Clay County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2021-05-28 | Minnesota: St. Louis County; | MRO | System Operations | 0 | Operations |
| 2021-05-28 | California: Riverside County; | WECC | Actual Physical Attack | 655 | Physical Attack |
| 2021-05-28 | Florida: Duval County; | SERC | Transmission Interruption | 10000 | Transmission Interruption |
| 2021-05-27 | Oregon: Multnomah County; | WECC | System Operations | 0 | Operations |
| 2021-05-27 | California: Nevada: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-05-25 | Ohio: | RF | System Operations | 0 | Operations |
| 2021-05-24 | Utah: San Juan County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-05-20 | California: Imperial County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-05-20 | Florida: Brevard County; | SERC | Transmission Interruption | 35000 | Transmission Interruption |
| 2021-05-18 | Delaware: New Castle County; | RF | Vandalism | 0 | Physical Attack |
| 2021-05-18 | Texas: Harris County; | TRE | Severe Weather | 125000 | Weather |
| 2021-05-14 | Idaho: | WECC | Vandalism | 0 | Physical Attack |
| 2021-05-14 | Pennsylvania: Montgomery County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-05-11 | Wisconsin: Iowa: | MRO | System Operations | 0 | Operations |
| 2021-05-11 | Texas: Kinney County; | TRE | Vandalism | 0 | Physical Attack |
| 2021-05-10 | Pennsylvania: | RF | System Operations | 0 | Operations |
| 2021-05-10 | Indiana: Vanderburgh County, Warrick County, Posey County, Daviess County, Gibson County, Knox County, Spencer County; | RF | System Operations | 0 | Operations |
| 2021-05-06 | Missouri: Jasper County; | SERC | System Operations | 0 | Operations |
| 2021-05-05 | Michigan: Huron County; | RF | Vandalism | 0 | Physical Attack |
| 2021-05-04 | Mississippi: Alabama: Georgia: | SERC | Severe Weather | 24457 | Weather |
| 2021-05-04 | Arkansas: | SERC | Severe Weather | 104027 | Weather |
| 2021-05-03 | Oklahoma: Oklahoma County; | MRO | System Operations | 0 | Operations |
| 2021-05-03 | South Carolina: Cherokee County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2021-05-02 | New Hampshire: Hillsborough County; | NPCC | System Operations | 0 | Operations |
| 2021-04-26 | Maine: Kennebec County; | NPCC | System Operations | 0 | Operations |
| 2021-04-25 | Tennessee: Davidson County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-04-24 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-04-24 | Alabama: Calhoun County; Georgia: | SERC | Severe Weather | 18860 | Weather |
| 2021-04-22 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2021-04-22 | Wisconsin: Dane County; | MRO | System Operations | 0 | Operations |
| 2021-04-21 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2021-04-21 | Minnesota: Dakota County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2021-04-14 | District of Columbia: Delaware: Maryland: New Jersey: Pennsylvania: | RF | System Operations | 0 | Operations |
| 2021-04-13 | Wisconsin: Eau Claire County; | MRO | System Operations | 0 | Operations |
| 2021-04-13 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-04-13 | Texas: | TRE | Severe Weather | 0 | Weather |
| 2021-04-12 | Colorado: Larimer County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2021-04-09 | Texas: Denton County; | TRE | Vandalism | 0 | Physical Attack |
| 2021-04-08 | California: | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-04-07 | Texas: | TRE | System Operations | 0 | Operations |
| 2021-04-07 | Ohio: Lake County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2021-04-06 | Florida: Alachua County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-03-30 | Texas: Hidalgo County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2021-03-29 | New Mexico: | WECC | Vandalism | 0 | Physical Attack |
| 2021-03-29 | Connecticut: Massachusetts: Maine: Vermont: Rhode Island: New Hampshire: | NPCC | Severe Weather | 70000 | Weather |
| 2021-03-21 | Minnesota: Hennepin County; | MRO | Suspicious Activity | 0 | Physical Attack |
| 2021-03-19 | Maine: | NPCC | System Operations | 0 | Operations |
| 2021-03-19 | New Jersey: | RF | System Operations | Unknown | Operations |
| 2021-03-19 | Louisiana: Lafourche Parish; | SERC | Vandalism | 4,200 | Physical Attack |
| 2021-03-18 | Washington: Okanogan County; | WECC | Vandalism | 916 | Physical Attack |
| 2021-03-17 | Pennsylvania: | RF | Transmission Interruption | 7381 | Transmission Interruption |
| 2021-03-17 | Texas: Dallas County, Tarrant County; | TRE | Severe Weather | 148000 | Weather |
| 2021-03-11 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2021-03-08 | Washington: Yakima County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-03-08 | Oregon: Multnomah County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-03-06 | California: Tuolumne County; | WECC | Severe Weather | 24000 | Weather |
| 2021-03-05 | Indiana: Hamilton County; | RF | System Operations | 0 | Operations |
| 2021-03-02 | Kentucky: | SERC | System Operations | 0 | Operations |
| 2021-03-01 | New York: Greene County; | NPCC | Cyber Event | 0 | Cyber Attack |
| 2021-03-01 | Texas: Nueces County; | TRE | Vandalism | 0 | Physical Attack |
| 2021-03-01 | Connecticut: Massachusetts: New Hampshire: Maine: Rhode Island: Vermont: | NPCC | Severe Weather | 69260 | Weather |
| 2021-02-28 | Texas: | TRE | System Operations | 0 | Operations |
| 2021-02-27 | Oregon: Multnomah County, Clackamas County; | WECC | System Operations | 0 | Operations |
| 2021-02-19 | Texas: | TRE | Cyber Event | 0 | Cyber Attack |
| 2021-02-19 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2021-02-19 | Louisiana: Texas: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-17 | Kansas: | MRO | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-17 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2021-02-17 | Louisiana: | SERC | System Operations | Unknown | Public Appeal |
| 2021-02-17 | Mississippi: | SERC | Severe Weather | Unknown | Public Appeal |
| 2021-02-17 | North Carolina: | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-02-17 | Louisiana: Lafayette Parish; | SERC | Severe Weather | 67000 | Weather |
| 2021-02-17 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-16 | New Jersey: Pennsylvania: Texas: California: Illinois: Colorado: | RF | Cyber Event | 0 | Cyber Attack |
| 2021-02-16 | Texas: | TRE | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-16 | Louisiana: | SERC | System Operations | 18150 | Load Shed |
| 2021-02-16 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2021-02-16 | Texas: | TRE | System Operations | 0 | Operations |
| 2021-02-16 | Oregon: Multnomah County; | WECC | System Operations | 0 | Operations |
| 2021-02-16 | Louisiana: | SERC | System Operations | Unknown | Public Appeal |
| 2021-02-16 | Arkansas: | SERC | Transmission Interruption | Unknown | Transmission Interruption |
| 2021-02-16 | Nebraska: Custer County; | MRO | Transmission Interruption | Unknown | Transmission Interruption |
| 2021-02-16 | Kentucky: | SERC | Severe Weather | 54167 | Weather |
| 2021-02-16 | Nebraska: Douglas County, Burt County, Washington County, Dodge County, Colfax County, Saunders County, Sarpy County, Cass County, Otoe County, Johnson County, Nemaha County, Pawnee County, Richardson County; | MRO | Severe Weather | 81100 | Weather |
| 2021-02-16 | Kansas: Missouri: | MRO | Severe Weather | 222000 | Weather |
| 2021-02-16 | Texas: | TRE | Severe Weather | 840000 | Weather |
| 2021-02-16 | Louisiana: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Missouri: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Mississippi: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Louisiana: Texas: Illinois: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Louisiana: Arkansas: Texas: Mississippi: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-16 | Louisiana: Lafayette Parish; | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Missouri: | SERC | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2021-02-16 | Louisiana: Allen Parish, St. Landry Parish, Evangeline Parish; | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Louisiana: Texas: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-16 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Oklahoma: | MRO | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2021-02-15 | Oklahoma: Kay County; | MRO | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-15 | Louisiana: | SERC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-15 | Nebraska: Lancaster County; | MRO | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-15 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2021-02-15 | Louisiana: | SERC | System Operations | Unknown | Operations |
| 2021-02-15 | Texas: Randall County; | TRE | Severe Weather | 0 | Weather |
| 2021-02-15 | Texas: Austin County, Bastrop County, Burleson County, Caldwell County, Colorado County, Fayette County, Gonzales County, Guadalupe County, Hays County, Lee County, Milam County, Travis County, Washington County, Williamson County; | TRE | Severe Weather | 25000 | Weather |
| 2021-02-15 | Texas: Lubbock County; | TRE | Severe Weather | 29942 | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | 72000 | Weather |
| 2021-02-15 | Texas: Bexar County; | TRE | Severe Weather | 154000 | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | 175000 | Weather |
| 2021-02-15 | Oklahoma: | MRO | Severe Weather | 200000 | Weather |
| 2021-02-15 | Texas: Travis County; | TRE | Severe Weather | 219306 | Weather |
| 2021-02-15 | Texas: Harris County; | TRE | Severe Weather | 1390000 | Weather |
| 2021-02-15 | Texas: Hidalgo County, Cameron County; | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Louisiana: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: Travis County; | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Kansas: | MRO | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: Arkansas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Arkansas: Pulaski County; | SERC | Severe Weather | Unknown | Weather |
| 2021-02-15 | Mississippi: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Missouri: Kansas: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-14 | Nebraska: Lancaster County; | MRO | Severe Weather | 0 | Weather |
| 2021-02-14 | Missouri: Jasper County; | SERC | Severe Weather | 0 | Weather |
| 2021-02-14 | Arkansas: Louisiana: Texas: Oklahoma: | SERC | Severe Weather | 125484 | Weather |
| 2021-02-14 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-14 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-14 | Oklahoma: | MRO | Severe Weather | Unknown | Weather |
| 2021-02-14 | North Dakota: South Dakota: Nebraska: Kansas: Oklahoma: Texas: | MRO | Severe Weather | Unknown | Weather |
| 2021-02-14 | Missouri: Kansas: | SERC | Severe Weather | Unknown | Weather |
| 2021-02-13 | Washington: Lewis County; | WECC | Severe Weather | 37583 | Weather |
| 2021-02-13 | West Virginia: Virginia: | RF | Severe Weather | 55097 | Weather |
| 2021-02-13 | South Carolina: North Carolina: | SERC | Severe Weather | 129000 | Weather |
| 2021-02-13 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2021-02-12 | Texas: | TRE | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-12 | Oregon: Clackamas County, Marion County, Polk County, Multnomah County, Washington County, Yamhill County; | WECC | Severe Weather | 300187 | Weather |
| 2021-02-11 | Kansas: | MRO | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2021-02-11 | Illinois: Scott County; | SERC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2021-02-11 | Colorado: Morgan County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-02-10 | Texas: | TRE | Severe Weather | 2000000 | Weather |
| 2021-02-09 | Oregon: Tillamook County; | WECC | Vandalism | 0 | Physical Attack |
| 2021-02-09 | North Carolina: | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2021-02-08 | New Hampshire: Hillsborough County; | NPCC | System Operations | 0 | Operations |
| 2021-02-08 | Minnesota: St. Louis County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2021-02-07 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2021-02-06 | Ohio: Kentucky: | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2021-02-05 | Arkansas: Arkansas County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-02-03 | North Dakota: Logan County, Emmons County, McIntosh County; | MRO | Transmission Interruption | 1400 | Transmission Interruption |
| 2021-02-02 | South Dakota: Hughes County; | MRO | Severe Weather/Transmission Interruption | 3 | Weather |
| 2021-02-02 | South Dakota: Hughes County; | MRO | Severe Weather/Transmission Interruption | 4 | Weather |
| 2021-02-01 | Texas: Kleberg County; | TRE | Transmission Interruption | 6102 | Transmission Interruption |
| 2021-01-28 | New Hampshire: Hillsborough County; | NPCC | Vandalism | 0 | Physical Attack |
| 2021-01-27 | New Hampshire: Hillsborough County; | NPCC | Vandalism | 0 | Physical Attack |
| 2021-01-26 | California: | WECC | Severe Weather | 255715 | Weather |
| 2021-01-23 | Georgia: Laurens County; | SERC | Cyber Event | Unknown | Cyber Attack |
| 2021-01-23 | California: Placer County, Nevada County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2021-01-21 | Texas: Louisiana: Arkansas: Pulaski County; Mississippi: | TRE | Vandalism | 0 | Physical Attack |
| 2021-01-19 | California: | WECC | Severe Weather | 124888 | Weather |
| 2021-01-19 | California: Kern County, Los Angeles County, Riverside County, San Bernardino County, Ventura County, Orange County; | WECC | Severe Weather | 173746 | Weather |
| 2021-01-18 | Connecticut: | NPCC | System Operations | 0 | Operations |
| 2021-01-15 | Missouri: | SERC | System Operations | 0 | Operations |
| 2021-01-13 | Georgia: Houston County; | SERC | Vandalism | 0 | Physical Attack |
| 2021-01-13 | Washington: Idaho: | WECC | Severe Weather | 70417 | Weather |
| 2021-01-12 | Washington: Snohomish County; | WECC | Severe Weather/Transmission Interruption | 62000 | Weather |
| 2021-01-12 | Washington: | WECC | Severe Weather/Distribution Interruption | 70000 | Weather |
| 2021-01-12 | Oregon: Clackamas County, Multnomah County, Washington County; | WECC | Severe Weather | 94231 | Weather |
| 2021-01-12 | Washington: Kitsap County, Thurston County, King County, Pierce County, Skagit County, Whatcom County; | WECC | Severe Weather | 320000 | Weather |
| 2021-01-11 | Louisiana: Texas: | SERC | Severe Weather/Distribution Interruption | 58000 | Weather |
| 2021-01-10 | Texas: Anderson County, Angelina County, Dallas County, Freestone County, Henderson County, Houston County, Leon County, Nacogdoches County, Smith County, Tarrant County; | TRE | Severe Weather | 188000 | Weather |
| 2021-01-08 | Arkansas: Prairie County; | SERC | Sabotage | 1,908 | Physical Attack |
| 2021-01-04 | Pennsylvania: | RF | Transmission Interruption | 3825 | Transmission Interruption |
| 2021-01-02 | California: Butte County; | WECC | System Operations | 5803 | Operations |
| 2021-01-01 | California: Alameda County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-12-28 | Virginia: | SERC | Vandalism | 0 | Physical Attack |
| 2020-12-25 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2020-12-25 | Ohio: Kentucky: | RF | Suspicious Activity | 0 | Physical Attack |
| 2020-12-25 | Connecticut: Maine: New Hampshire: Massachusetts: Rhode Island: Vermont: | NPCC | Severe Weather | 19000 | Weather |
| 2020-12-24 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather/Distribution Interruption | 68114 | Weather |
| 2020-12-22 | Washington: Pierce County; | WECC | Vandalism | 2,000 | Physical Attack |
| 2020-12-20 | California: Los Angeles County; | WECC | Cyber Event | 0 | Cyber Attack |
| 2020-12-18 | Oregon: Clackamas County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-12-17 | Michigan: Wayne County; | RF | System Operations | 0 | Operations |
| 2020-12-17 | California: | WECC | Severe Weather | 17000 | Weather |
| 2020-12-16 | Oklahoma: | MRO | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-12-14 | Idaho: Oregon: | WECC | Cyber Event | 0 | Cyber Attack |
| 2020-12-14 | New Jersey: Pennsylvania: Maryland: Illinois: Delaware: District of Columbia: | RF | Cyber Event | 0 | Cyber Attack |
| 2020-12-14 | California: | WECC | System Operations | 0 | Operations |
| 2020-12-13 | California: | WECC | System Operations | 159239 | Operations |
| 2020-12-11 | Texas: Harris County; | TRE | System Operations | 0 | Operations |
| 2020-12-10 | Washington: King County; | WECC | System Operations | 0 | Operations |
| 2020-12-09 | Missouri: Kansas: | MRO | System Operations | 0 | Operations |
| 2020-12-08 | Michigan: Wayne County; | RF | System Operations | 0 | Operations |
| 2020-12-07 | California: Kern County, Los Angeles County, Orange County, Riverside County, San Bernardino County, Ventura County, Tulare County; | WECC | Severe Weather | 76234 | Weather |
| 2020-12-06 | Pennsylvania: | RF | System Operations | 0 | Operations |
| 2020-12-05 | Connecticut: Massachusetts: Maine: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 271231 | Weather |
| 2020-12-03 | Colorado: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-12-03 | California: Kern County, Los Angeles County, Orange County, Riverside County, San Bernardino County, San Diego County, Tulare County, Ventura County; | WECC | Severe Weather | 51686 | Weather |
| 2020-12-03 | California: San Diego County; | WECC | Severe Weather | 73000 | Weather |
| 2020-12-01 | Ohio: | RF | Severe Weather | 170190 | Weather |
| 2020-11-30 | Texas: El Paso County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2020-11-30 | Massachusetts: Maine: Connecticut: Rhode Island: Vermont: New Hampshire: | NPCC | Severe Weather | 116000 | Weather |
| 2020-11-23 | Wisconsin: Dane County; | MRO | System Operations | 0 | Operations |
| 2020-11-21 | Nevada: Clark County; | WECC | Actual Physical Attack | 577 | Physical Attack |
| 2020-11-20 | Texas: Kentucky: Arizona: New Mexico: Oregon: Washington: | TRE | System Operations | Unknown | Cyber Attack |
| 2020-11-18 | Missouri: Jackson County; | SERC | System Operations | 0 | Operations |
| 2020-11-18 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-11-15 | Michigan: Iosco County, Oscoda County, Ogemaw County, Livingston County, Ionia County, Barry County; | RF | Severe Weather | 57327 | Weather |
| 2020-11-15 | Connecticut: Massachusetts: Maine: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 62408 | Weather |
| 2020-11-15 | Ohio: West Virginia: Virginia: Indiana: | RF | Severe Weather | 75000 | Weather |
| 2020-11-15 | Ohio: | RF | Severe Weather | 96809 | Weather |
| 2020-11-15 | Ohio: | RF | Severe Weather | 123361 | Weather |
| 2020-11-15 | Michigan: Huron County, Livingston County, Macomb County, Monroe County, Wayne County, Washtenaw County, Tuscola County, St. Clair County, Lapeer County, Oakland County; | RF | Severe Weather | 150000 | Weather |
| 2020-11-14 | California: San Bernardino County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2020-11-13 | Washington: Snohomish County; | WECC | System Operations | 0 | Operations |
| 2020-11-10 | Arizona: Maricopa County; | WECC | System Operations | 0 | Operations |
| 2020-11-09 | New Hampshire: Coos County; | NPCC | Vandalism | 0 | Physical Attack |
| 2020-11-07 | Colorado: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-11-02 | Florida: | FRCC | Suspicious Activity | 0 | Physical Attack |
| 2020-11-01 | California: Placer County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-11-01 | Ohio: | RF | Severe Weather | 85677 | Weather |
| 2020-10-29 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-10-29 | Alabama: Baldwin County, Butler County, Clarke County, Conecuh County, Escambia County, Lee County, Lowndes County, Macon County, Montgomery County, Pike County, Russell County, Tallapoosa County, Talladega County, Washington County, Monroe County; Florida: Escambia County, Okaloosa County, Walton County, Santa Rosa County; | SERC | Severe Weather | 90000 | Weather |
| 2020-10-29 | North Carolina: South Carolina: | SERC | Severe Weather | 461580 | Weather |
| 2020-10-28 | Texas: | TRE | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-10-28 | Alabama: Florida: Mississippi: Georgia: | SERC | Severe Weather | 35478 | Weather |
| 2020-10-28 | Louisiana: St. Tammany Parish, St. Mary Parish; | SERC | Severe Weather | 72707 | Weather |
| 2020-10-28 | Louisiana: | SERC | Severe Weather | 481268 | Weather |
| 2020-10-28 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-10-27 | Oklahoma: | SPP RE | Severe Weather | 235000 | Weather |
| 2020-10-26 | Kentucky: | SERC | Vandalism | 0 | Physical Attack |
| 2020-10-26 | Colorado: | WECC | Transmission Interruption | 13000 | Transmission Interruption |
| 2020-10-26 | California: Los Angeles County, Riverside County, San Bernardino County, Orange County, Kern County, Ventura County; | WECC | Severe Weather | 136833 | Weather |
| 2020-10-26 | Oklahoma: Oklahoma County, Canadian County, Logan County, Cleveland County, Pottawatomie County; | SPP RE | Severe Weather | 447000 | Weather |
| 2020-10-25 | Wisconsin: Milwaukee County; Michigan: | MRO | Suspicious Activity | 0 | Physical Attack |
| 2020-10-25 | California: | WECC | Severe Weather | 370000 | Weather |
| 2020-10-24 | Minnesota: Hennepin County; | MRO | Transmission Interruption | 4 | Transmission Interruption |
| 2020-10-23 | Ohio: | RF | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-10-23 | Texas: Harris County; | TRE | Severe Weather | 55506 | Weather |
| 2020-10-22 | Florida: Pinellas County; | FRCC | System Operations | 0 | Operations |
| 2020-10-22 | Idaho: | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-10-20 | Illinois: Massac County; | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-10-16 | Kentucky: | SERC | Vandalism | 0 | Physical Attack |
| 2020-10-15 | Michigan: | RF | System Operations | 0 | Operations |
| 2020-10-15 | Washington: Walla Walla County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-10-14 | Texas: Pecos County; | TRE | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-10-13 | Washington: Whatcom County, King County, Pierce County, Thurston County, Kittitas County, Kitsap County; | WECC | Severe Weather | 76000 | Weather |
| 2020-10-12 | Florida: Polk County; | FRCC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-10-10 | Oregon: Clackamas County; | WECC | System Operations | 0 | Operations |
| 2020-10-10 | Washington: Oregon: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-10-10 | Louisiana: Lafayette Parish; | SERC | Severe Weather | Unknown | Weather |
| 2020-10-09 | Colorado: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-10-09 | Louisiana: | SERC | Severe Weather | 50000 | Weather |
| 2020-10-09 | Louisiana: Lafayette Parish; | SERC | Severe Weather | 50000 | Weather |
| 2020-10-09 | Louisiana: Acadia Parish, Beauregard Parish, Calcasieu Parish, Evangeline Parish, Iberia Parish, Rapides Parish, Vernon Parish, Avoyelles Parish, Grant Parish, Natchitoches Parish, St. Landry Parish, St. Mary Parish, St. Tammany Parish; | SERC | Severe Weather | 132200 | Weather |
| 2020-10-09 | Louisiana: Texas: Arkansas: Mississippi: | SERC | Severe Weather | 477966 | Weather |
| 2020-10-07 | Louisiana: Orleans Parish; | SERC | Transmission Interruption | 39089 | Transmission Interruption |
| 2020-10-07 | New York: Onondaga County; | NPCC | Severe Weather | 7500 | Weather |
| 2020-10-07 | Connecticut: Massachusetts: Maine: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 186600 | Weather |
| 2020-10-02 | Virginia: Hanover County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2020-09-30 | Connecticut: Maine: Rhode Island: Massachusetts: New Hampshire: Vermont: | NPCC | Severe Weather | 155000 | Weather |
| 2020-09-27 | California: | WECC | Natural Disaster | 102267 | Natural Disaster |
| 2020-09-26 | Nevada: Clark County; | WECC | Actual Physical Attack | 13,000 | Physical Attack |
| 2020-09-23 | New Jersey: | RF | Vandalism | 0 | Physical Attack |
| 2020-09-22 | California: | WECC | System Operations | 4350 | Operations |
| 2020-09-20 | Oklahoma: Canadian County; | SPP RE | Actual Physical Attack | Unknown | Physical Attack |
| 2020-09-16 | Florida: Escambia County; | FRCC | System Operations | 0 | Operations |
| 2020-09-16 | Maine: Oxford County; | NPCC | Vandalism | 0 | Physical Attack |
| 2020-09-16 | Alabama: Baldwin County; | SERC | Severe Weather | 77600 | Weather |
| 2020-09-15 | North Dakota: South Dakota: Montana: | MRO | System Operations | 0 | Operations |
| 2020-09-15 | Alabama: Florida: Georgia: Mississippi: | SERC | Severe Weather/Transmission Interruption | 34096 | Weather |
| 2020-09-09 | Idaho: | WECC | Natural Disaster | 0 | Natural Disaster |
| 2020-09-09 | Minnesota: Sherburne County; | MRO | Suspicious Activity | 0 | Physical Attack |
| 2020-09-08 | Michigan: Ingham County; | RF | System Operations | 0 | Operations |
| 2020-09-07 | Washington: | WECC | Natural Disaster | 21000 | Natural Disaster |
| 2020-09-07 | California: | WECC | Transmission Interruption | 172000 | Transmission Interruption |
| 2020-09-07 | Washington: Kitsap County, King County, Pierce County; | WECC | Severe Weather | 71500 | Weather |
| 2020-09-07 | Oregon: Multnomah County, Washington County, Clackamas County, Marion County, Yamhill County, Polk County; | WECC | Severe Weather | 103000 | Weather |
| 2020-09-06 | Washington: Oregon: California: | WECC | System Operations | 0 | Operations |
| 2020-09-06 | California: | WECC | System Operations | Unknown | Public Appeal |
| 2020-09-06 | California: Los Angeles County; | WECC | Severe Weather | 72000 | Weather |
| 2020-09-06 | Nevada: | WECC | Severe Weather | 1400000 | Weather |
| 2020-09-05 | California: Imperial County; | WECC | Severe Weather | 20000 | Weather |
| 2020-09-05 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-09-04 | Florida: Pinellas County; | FRCC | System Operations | 0 | Operations |
| 2020-09-03 | Washington: | WECC | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-09-01 | California: Los Angeles County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-08-31 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2020-08-29 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-08-28 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-08-28 | Washington: Oregon: | WECC | Severe Weather | 0 | Weather |
| 2020-08-27 | Nebraska: Douglas County, Burt County, Washington County, Dodge County, Colfax County, Saunders County, Sarpy County, Cass County, Otoe County, Johnson County, Nemaha County, Pawnee County, Richardson County; | MRO | System Operations | 0 | Operations |
| 2020-08-27 | West Virginia: Putnam County; | RF | Suspicious Activity | Unknown | Physical Attack |
| 2020-08-27 | Louisiana: Texas: | SERC | Severe Weather | 47927 | Weather |
| 2020-08-27 | Louisiana: | SERC | Severe Weather | 50000 | Weather |
| 2020-08-27 | Connecticut: Massachusetts: New Hampshire: Maine: Rhode Island: Vermont: | NPCC | Severe Weather | 60687 | Weather |
| 2020-08-27 | Louisiana: Texas: | SERC | Severe Weather | 130000 | Weather |
| 2020-08-27 | Texas: Louisiana: | TRE | Severe Weather | 615992 | Weather |
| 2020-08-27 | Louisiana: Rapides Parish; | SERC | Severe Weather | Unknown | Weather |
| 2020-08-27 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-08-27 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-08-27 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-08-27 | Texas: Montgomery County, Liberty County; | TRE | Severe Weather | Unknown | Weather |
| 2020-08-27 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2020-08-27 | Louisiana: Calcasieu Parish, Beauregard Parish, Iberia Parish, Acadia Parish, Evangeline Parish, Rapides Parish, St. Landry Parish, Vernon Parish; | SERC | Severe Weather | Unknown | Weather |
| 2020-08-25 | Colorado: Jefferson County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-08-24 | Texas: Denton County; | TRE | Potential Physical Attack | 0 | Physical Attack |
| 2020-08-23 | West Virginia: Putnam County; | RF | Suspicious Activity | 0 | Physical Attack |
| 2020-08-23 | Texas panhandle, SE NM | TRE | Severe Weather | Unknown | Weather |
| 2020-08-20 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-08-20 | Mississippi: Jasper County; | SERC | Vandalism | 0 | Physical Attack |
| 2020-08-20 | Nebraska: Custer County; | MRO | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-08-19 | Ohio: Trumbull County; | RF | Transmission Interruption | 16107 | Transmission Interruption |
| 2020-08-19 | Arizona: Maricopa County; | WECC | Severe Weather | 0 | Weather |
| 2020-08-19 | Nevada: | WECC | Severe Weather | 1400000 | Weather |
| 2020-08-19 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-18 | California: Imperial County; | WECC | System Operations | 0 | Operations |
| 2020-08-18 | California: Kings County; | WECC | Potential Physical Attack | 0 | Physical Attack |
| 2020-08-18 | Texas: Culberson County, Reeves County; | TRE | Transmission Interruption | 238 | Transmission Interruption |
| 2020-08-18 | Nevada: | WECC | Severe Weather | 1400000 | Weather |
| 2020-08-18 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-18 | Arizona: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-17 | California: Yuba County; | WECC | Severe Weather | 2 | Weather |
| 2020-08-17 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-16 | California: | WECC | Severe Weather | 124266 | Weather |
| 2020-08-16 | Texas: Collin County, Dallas County, Denton County, Tarrant County, Ellis County, Kaufman County, Johnson County, Anderson County, Angelina County, Grayson County, Smith County, Wichita County; | TRE | Severe Weather | 300000 | Weather |
| 2020-08-16 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-15 | California: Inyo County, Kern County, Los Angeles County, Orange County, Riverside County, San Bernardino County, Tulare County, Ventura County; | WECC | System Operations | 70000 | Operations |
| 2020-08-15 | California: | WECC | System Operations | 220000 | Operations |
| 2020-08-15 | Connecticut: New Haven County[13]; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2020-08-15 | Washington: Snohomish County; | WECC | Vandalism | 8 | Physical Attack |
| 2020-08-15 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-14 | California: Kern County, Kings County, Los Angeles County, Orange County, Riverside County, San Bernardino County, Santa Barbara County, Tulare County, Ventura County; | WECC | System Operations | 132000 | Operations |
| 2020-08-14 | California: | WECC | System Operations | 220000 | Operations |
| 2020-08-14 | Louisiana: St. Charles Parish; | SERC | Transmission Interruption | 12671 | Transmission Interruption |
| 2020-08-14 | Minnesota: Anoka County, Hennepin County, Ramsey County, Washington County; | MRO | Severe Weather | 60000 | Weather |
| 2020-08-14 | California: | WECC | Severe Weather | Unknown | Weather |
| 2020-08-13 | Texas: El Paso County; | TRE | System Operations | 57060 | Operations |
| 2020-08-10 | New York: Onondaga County; | NPCC | System Operations | 0 | Operations |
| 2020-08-10 | Indiana: | RF | Severe Weather | 95300 | Weather |
| 2020-08-10 | Illinois: Missouri: | SERC | Severe Weather | 135000 | Weather |
| 2020-08-10 | Iowa: | MRO | Severe Weather | 250000 | Weather |
| 2020-08-10 | Iowa: Dallas County, Polk County, Warren County, Madison County, Johnson County, Scott County; Illinois: Rock Island County, Henry County, Mercer County; | MRO | Severe Weather | 300000 | Weather |
| 2020-08-10 | Illinois: Cook County, Will County, DuPage County, Lake County, Kane County, Grundy County, LaSalle County, DeKalb County, McHenry County, Lee County; | SERC | Severe Weather | 856000 | Weather |
| 2020-08-10 | Iowa: Webster County, Greene County, Dallas County, Hamilton County, Boone County, Polk County, Hardin County, Story County, Jasper County, Grundy County, Marshall County, Tama County, Poweshiek County, Benton County, Iowa County, Linn County, Johnson County, Jones County, Cedar County, Muscatine County, Jackson County, Clinton County, Scott County; | MRO | Severe Weather | Unknown | Weather |
| 2020-08-10 | Iowa: | MRO | Severe Weather | Unknown | Weather |
| 2020-08-07 | New York: Queens County, New York County; | NPCC | Severe Weather | 187068 | Weather |
| 2020-08-05 | Texas: Orange County; | TRE | Transmission Interruption | 19785 | Transmission Interruption |
| 2020-08-04 | New Jersey: | RF | Severe Weather | 70000 | Weather |
| 2020-08-04 | New Jersey: | RF | Severe Weather | 75000 | Weather |
| 2020-08-04 | New York: Broome County; | NPCC | Severe Weather | 76120 | Weather |
| 2020-08-04 | New York: | NPCC | Severe Weather | 76120 | Weather |
| 2020-08-04 | Delaware: | RF | Severe Weather | 100000 | Weather |
| 2020-08-04 | New York: Dutchess County, Orange County, Ulster County; | NPCC | Severe Weather | 116818 | Weather |
| 2020-08-04 | North Carolina: Brunswick County, Columbus County, Pender County, Duplin County, Onslow County, Jones County, Craven County, Jones County, Beaufort County, Bertie County, Chowan County, Gates County, Perquimans County; | SERC | Severe Weather | 125987 | Weather |
| 2020-08-04 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather | 137103 | Weather |
| 2020-08-04 | New York: Rockland County, Orange County, Sullivan County; New Jersey: Bergen County, Passaic County, Sussex County; | NPCC | Severe Weather | 160000 | Weather |
| 2020-08-04 | New York: Bronx County, Richmond County, Queens County, Kings County, Westchester County, New York County; | NPCC | Severe Weather | 271119 | Weather |
| 2020-08-04 | New York: Nassau County, Suffolk County, Queens County; | NPCC | Severe Weather | 420000 | Weather |
| 2020-08-04 | Virginia: | SERC | Severe Weather | 508000 | Weather |
| 2020-08-04 | New Jersey: | RF | Severe Weather | 788000 | Weather |
| 2020-08-04 | Connecticut: Massachusetts: New Hampshire: Maine: Rhode Island: Vermont: | NPCC | Severe Weather | 1188247 | Weather |
| 2020-08-03 | Texas: Ector County; | TRE | Vandalism | 0 | Physical Attack |
| 2020-08-03 | North Carolina: South Carolina: | SERC | Severe Weather | 340000 | Weather |
| 2020-08-03 | North Carolina: | SERC | Severe Weather | Unknown | Weather |
| 2020-08-02 | Illinois: Rock Island County; | SERC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-08-01 | California: San Diego County; | WECC | System Operations | 0 | Operations |
| 2020-08-01 | Texas: Cameron County, Willacy County, Hidalgo County, Starr County; | TRE | Severe Weather | Unknown | Weather |
| 2020-08-01 | Texas: Cameron County, Hidalgo County, Starr County, Willacy County; | TRE | Severe Weather | Unknown | Weather |
| 2020-07-30 | Nebraska: Scotts Bluff County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2020-07-28 | Michigan: Jackson County; | RF | System Operations | 0 | Operations |
| 2020-07-25 | Texas: Hidalgo County, Cameron County, Starr County, Kenedy County, Willacy County, Brooks County, Jim Hogg County; | TRE | Severe Weather | 84000 | Weather |
| 2020-07-25 | Texas: Nueces County, Kleberg County, Cameron County, Willacy County, Hidalgo County, Starr County, Kenedy County; | TRE | Severe Weather | 201208 | Weather |
| 2020-07-24 | New York: Bronx County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-22 | West Virginia: Tucker County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2020-07-21 | Washington: Pierce County; | WECC | Vandalism | 11,000 | Physical Attack |
| 2020-07-20 | Texas: Travis County; | TRE | Suspicious Activity | 14,096 | Physical Attack |
| 2020-07-19 | New York: Niagara County | NPCC | Fuel Supply Deficiency | Fuel Supply Deficiency | |
| 2020-07-19 | Michigan: | RF | Severe Weather | 158500 | Weather |
| 2020-07-17 | Oklahoma: | SPP RE | Vandalism | 0 | Physical Attack |
| 2020-07-17 | New York: | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-16 | North Dakota: Minnesota: | MRO | System Operations | 0 | Operations |
| 2020-07-15 | Kentucky: Madison County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-14 | California: | WECC | System Operations | 0 | Operations |
| 2020-07-13 | Kentucky: Madison County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-12 | Nevada: Washoe County; | WECC | Actual Physical Attack | 10,000 | Physical Attack |
| 2020-07-12 | Texas: Collin County, Dallas County, Denton County, Rockwall County, Tarrant County; | TRE | Severe Weather | 48000 | Weather |
| 2020-07-11 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2020-07-11 | Oklahoma: Arkansas: | SPP RE | Severe Weather | 68000 | Weather |
| 2020-07-11 | Oklahoma: | SPP RE | Severe Weather | 94700 | Weather |
| 2020-07-09 | Washington: Thurston County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-08 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2020-07-08 | Texas: | TRE | Actual Physical Attack | 0 | Physical Attack |
| 2020-07-07 | California: Los Angeles County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-07-07 | Colorado: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-07-07 | West Virginia: Wyoming County; | RF | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2020-07-06 | District of Columbia: Maryland: | RF | System Operations | 0 | Operations |
| 2020-07-06 | New York: Kings County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2020-07-02 | California: Butte County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2020-07-01 | Pennsylvania: | RF | Transmission Interruption | 2013 | Transmission Interruption |
| 2020-06-30 | Oregon: | WECC | Vandalism | 0 | Physical Attack |
| 2020-06-29 | Arkansas: Garland County; | SPP RE | Transmission Interruption | 0 | Transmission Interruption |
| 2020-06-27 | Alabama: Georgia: | SERC | Severe Weather | 78109 | Weather |
| 2020-06-26 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2020-06-26 | North Dakota: Mountrail County; | MRO | Vandalism | 0 | Physical Attack |
| 2020-06-25 | Kentucky: Madison County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2020-06-22 | Pennsylvania: Allegheny County, Beaver County; | RF | System Operations | 0 | Operations |
| 2020-06-21 | Delaware: New Castle County; | RF | Vandalism | 0 | Physical Attack |
| 2020-06-18 | Colorado: El Paso County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2020-06-18 | Kentucky: Gallatin County; | SERC | Actual Physical Attack | 0 | Physical Attack |
| 2020-06-12 | Michigan: Houghton County; | RF | Vandalism | 0 | Physical Attack |
| 2020-06-10 | Ohio: Indiana: Kentucky: West Virginia: | RF | Severe Weather | 85822 | Weather |
| 2020-06-10 | Michigan: Oakland County, Macomb County, Wayne County, Sanilac County, Tuscola County, Huron County, Lapeer County, Livingston County, Monroe County; | RF | Severe Weather | 237000 | Weather |
| 2020-06-10 | Michigan: Gratiot County, Lake County, Missaukee County, Benzie County, Leelanau County, Manistee County, Wexford County, Montcalm County, Kent County, Ottawa County, Van Buren County, St. Joseph County, Arenac County, Saginaw County, Calhoun County, Branch County; | RF | Severe Weather | 270000 | Weather |
| 2020-06-09 | Washington: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-06-03 | North Dakota: Minnesota: | MRO | System Operations | 0 | Operations |
| 2020-06-03 | New Jersey: | RF | Severe Weather | 78079 | Weather |
| 2020-06-03 | New Jersey: | RF | Severe Weather | 87000 | Weather |
| 2020-06-03 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather | 708000 | Weather |
| 2020-06-02 | Idaho: Blaine County, Jerome County, Minidoka County, Power County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-05-31 | Alabama: Jefferson County; | SERC | Vandalism | 0 | Physical Attack |
| 2020-05-31 | Pennsylvania: | RF | Vandalism | 0 | Physical Attack |
| 2020-05-30 | Texas: Bexar County; | TRE | System Operations | 0 | Operations |
| 2020-05-29 | Minnesota: Hennepin County; | MRO | System Operations | 0 | Physical Attack |
| 2020-05-29 | Ohio: Franklin County; | RF | Vandalism | 0 | Physical Attack |
| 2020-05-29 | Pennsylvania: Warren County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2020-05-27 | Texas: | TRE | Severe Weather | 273269 | Weather |
| 2020-05-27 | Texas: Harris County; | TRE | Severe Weather | 382000 | Weather |
| 2020-05-25 | Texas: Kerr County; | TRE | Transmission Interruption | 3745 | Transmission Interruption |
| 2020-05-24 | Central Oklahoma | SPP RE | Severe Weather | 54000 | Weather |
| 2020-05-22 | North Carolina: South Carolina: | SERC | Severe Weather | 108190 | Weather |
| 2020-05-20 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-05-19 | Idaho: Bonneville County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-05-19 | Arkansas: | SPP RE | Suspicious Activity | 0 | Physical Attack |
| 2020-05-19 | Alabama: Jefferson County; | SERC | Vandalism | 6,000 | Physical Attack |
| 2020-05-18 | South Carolina: | SERC | System Operations | 0 | Operations |
| 2020-05-18 | Oregon: Clackamas County; | WECC | System Operations | 0 | Operations |
| 2020-05-16 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2020-05-15 | New York: Saratoga County; | NPCC | Severe Weather | 52 | Weather |
| 2020-05-14 | Oregon: Jackson County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-05-13 | Indiana: Hendricks County; | RF | System Operations | 0 | Operations |
| 2020-05-13 | Washington: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-05-08 | Nevada: Nye County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-05-04 | Tennessee: Davidson County; | SERC | Severe Weather | 130000 | Weather |
| 2020-04-30 | Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; | RF | Severe Weather | 78007 | Weather |
| 2020-04-29 | Louisiana: | SERC | Severe Weather | 77933 | Weather |
| 2020-04-29 | Texas: Harris County; | TRE | Severe Weather | 146660 | Weather |
| 2020-04-28 | Texas: Jefferson County; | TRE | Transmission Interruption | 1 | Transmission Interruption |
| 2020-04-26 | Florida: | FRCC | Severe Weather | 49999 | Weather |
| 2020-04-25 | Oregon: Multnomah County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-04-24 | California: Placer County, Nevada County; | WECC | System Operations | 945 | Operations |
| 2020-04-24 | Nevada: White Pine County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-04-23 | Alabama: Georgia: Mississippi: Florida: | SERC | Severe Weather | 52163 | Weather |
| 2020-04-23 | Mississippi: Arkansas: Louisiana: | SERC | Severe Weather | 55184 | Weather |
| 2020-04-20 | South Dakota: Deuel County; | MRO | Vandalism | 0 | Physical Attack |
| 2020-04-20 | Alabama: Mississippi: Georgia: Florida: | SERC | Severe Weather | 77341 | Weather |
| 2020-04-19 | North Dakota: Burleigh County; | MRO | Suspicious Activity | 0 | Physical Attack |
| 2020-04-18 | Nevada: Washoe County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-04-16 | Georgia: | SERC | Vandalism | 0 | Physical Attack |
| 2020-04-13 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 68476 | Weather |
| 2020-04-13 | South Carolina: | SERC | Severe Weather | 72233 | Weather |
| 2020-04-13 | North Carolina: | SERC | Severe Weather | 95000 | Weather |
| 2020-04-13 | Tennessee: Hamilton County; | SERC | Severe Weather | 120000 | Weather |
| 2020-04-13 | North Carolina: South Carolina: | SERC | Severe Weather | 216400 | Weather |
| 2020-04-13 | North Carolina: South Carolina: | SERC | Severe Weather | Unknown | Weather |
| 2020-04-12 | Louisiana: Acadia Parish, Iberville Parish, Jefferson Davis Parish, Concordia Parish, Winn Parish, Catahoula Parish, Terrebonne Parish, St. Mary Parish; | SERC | Severe Weather | 37991 | Weather |
| 2020-04-12 | Arkansas: | SPP RE | Severe Weather | 51000 | Weather |
| 2020-04-12 | Mississippi: Alabama: Georgia: | SERC | Severe Weather | 62828 | Weather |
| 2020-04-12 | Texas: | TRE | Severe Weather | 63289 | Weather |
| 2020-04-12 | Arkansas: | SPP RE | Severe Weather | 95318 | Weather |
| 2020-04-12 | Virginia: West Virginia: | RF | Severe Weather | 104000 | Weather |
| 2020-04-11 | Utah: Salt Lake City | WECC | Suspicious Activity | Unknown | Physical Attack |
| 2020-04-11 | Wyoming: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-04-10 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-04-10 | Nevada: White Pine County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-04-09 | Wisconsin: Dane County; | RF | System Operations | 0 | Operations |
| 2020-04-09 | Texas: Harris County; | TRE | Severe Weather | 95000 | Weather |
| 2020-04-09 | Maine: | NPCC | Severe Weather | 340000 | Weather |
| 2020-04-08 | Ohio: Kentucky: | RF | Severe Weather | 78314 | Weather |
| 2020-04-08 | Ohio: | WECC | Severe Weather | 82509 | Weather |
| 2020-04-08 | Indiana: | RF | Severe Weather | 93000 | Weather |
| 2020-04-07 | Washington: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-04-05 | Texas: Cameron County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2020-04-05 | California: Stanislaus County; | WECC | Severe Weather | 6814 | Weather |
| 2020-04-03 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-04-02 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2020-04-02 | Washington: Wallula | WECC | Vandalism | Unknown | Physical Attack |
| 2020-04-02 | Nebraska: York County; | MRO | Transmission Interruption | Unknown | Transmission Interruption |
| 2020-04-01 | Illinois: Williamson County; | SERC | System Operations | 0 | Operations |
| 2020-03-31 | Alabama: Georgia: | SERC | Severe Weather | 57744 | Weather |
| 2020-03-29 | Mississippi: Panola County; | SERC | Transmission Interruption | 1558 | Transmission Interruption |
| 2020-03-27 | Delaware: Kent County, New Castle County, Sussex County; Maryland: Cecil County, Harford County, Talbot County, Kent County, Queen Anne's County, Dorchester County, Wicomico County, Worcester County, Somerset County; | RF | System Operations | 0 | Operations |
| 2020-03-27 | New Jersey: Atlantic County, Cape May County, Cumberland County, Gloucester County, Salem County; | RF | System Operations | 0 | Operations |
| 2020-03-26 | Ohio: | RF | Transmission Interruption | 11964 | Transmission Interruption |
| 2020-03-25 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-03-24 | California: Nevada County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2020-03-24 | Connecticut: Massachusetts: Maine: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 51026 | Weather |
| 2020-03-23 | Wisconsin: Columbia County; | MRO | Vandalism | 0 | Physical Attack |
| 2020-03-23 | Virginia: | SERC | Sabotage | 1,018 | Physical Attack |
| 2020-03-20 | Connecticut: Massachusetts: Rhode Island: Maine: New Hampshire: Vermont: | NPCC | System Operations | 0 | Operations |
| 2020-03-20 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-03-20 | Connecticut: Massachusetts: | NPCC | System Operations | 0 | Operations |
| 2020-03-19 | Minnesota: St. Louis County; | MRO | System Operations | 0 | Operations |
| 2020-03-18 | Utah: | WECC | Natural Disaster | 73000 | Natural Disaster |
| 2020-03-17 | Michigan: Washtenaw County; | RF | System Operations | 0 | Operations |
| 2020-03-16 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-03-16 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-03-16 | California: | WECC | Severe Weather | 110800 | Weather |
| 2020-03-12 | Pennsylvania: | RF | Transmission Interruption | 15864 | Transmission Interruption |
| 2020-03-08 | Texas: Llano County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2020-03-03 | Alabama: | SERC | Vandalism | 0 | Physical Attack |
| 2020-03-02 | Nevada: Clark County, Washoe County; | WECC | System Operations | 0 | Operations |
| 2020-03-01 | Western NY | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2020-03-01 | New York: | NPCC | Vandalism | 0 | Physical Attack |
| 2020-03-01 | Mississippi: Rankin County; | SERC | Transmission Interruption | 3136 | Transmission Interruption |
| 2020-02-29 | Nevada: Clark County, Washoe County; | WECC | System Operations | 0 | Operations |
| 2020-02-26 | Oklahoma: | SPP RE | System Operations | 0 | Operations |
| 2020-02-26 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-02-26 | South Dakota: Wyoming: Colorado: | MRO | System Operations | 0 | Operations |
| 2020-02-25 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-02-18 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-02-17 | Michigan: Eaton County; | RF | Vandalism | 0 | Physical Attack |
| 2020-02-17 | Alabama: Chambers County; | SERC | Vandalism | Unknown | Physical Attack |
| 2020-02-17 | Northern and Central California; | WECC | Severe Weather | 70,000 | Weather |
| 2020-02-13 | Oregon: | WECC | Vandalism | 0 | Physical Attack |
| 2020-02-12 | Maine: | NPCC | System Operations | 0 | Operations |
| 2020-02-11 | Texas: Sterling County; | TRE | System Operations | 0 | Cyber Attack |
| 2020-02-11 | Oregon: Clackamas County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2020-02-09 | California: Alameda County, Contra Costa County, El Dorado County, Nevada County, Placer County, Sierra County, Santa Clara County, Napa County, Marin County, Santa Cruz County; | WECC | Severe Weather | 145,000 | Weather |
| 2020-02-08 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2020-02-07 | New York: | NPCC | Severe Weather | 7,500 | Weather |
| 2020-02-07 | Pennsylvania: | RF | Severe Weather/Distribution Interruption | 52,000 | Weather |
| 2020-02-07 | Virginia: North Carolina: | SERC | Severe Weather | 87,000 | Weather |
| 2020-02-07 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 123,359 | Weather |
| 2020-02-06 | North Carolina: South Carolina: | SERC | Severe Weather/Transmission Interruption | 89,500 | Weather |
| 2020-02-06 | North Carolina: | SERC | Severe Weather/Distribution Interruption | 284,256 | Weather |
| 2020-01-31 | California: | WECC | Suspicious Activity | 0 | Cyber Attack |
| 2020-01-30 | North Dakota: Burleigh County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2020-01-27 | North Dakota: South Dakota: Montana: | MRO | System Operations | 130,000 | Operations |
| 2020-01-24 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2020-01-23 | Florida: Manatee County; | FRCC | Vandalism | 0 | Physical Attack |
| 2020-01-22 | Nevada: Humboldt County; | WECC | Actual Physical Attack | 3,120 | Physical Attack |
| 2020-01-20 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2020-01-17 | California: Humboldt County; | WECC | Severe Weather/Transmission Interruption | 67,864 | Weather |
| 2020-01-16 | Texas: Harris County; | TRE | System Operations | 0 | Operations |
| 2020-01-14 | Florida: Alachua County; | FRCC | Suspicious Activity | 0 | Physical Attack |
| 2020-01-12 | Texas: Brazos County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2020-01-11 | Arkansas: Cross County; | SPP RE | Severe Weather/Transmission Interruption | 7,541 | Weather |
| 2020-01-11 | Alabama: Georgia: Mississippi: | SERC | Severe Weather | 30,715 | Weather |
| 2020-01-11 | North Carolina: South Carolina: | SERC | Severe Weather | 66,475 | Weather |
| 2020-01-11 | Arkansas: Texas: | SPP RE | Severe Weather | 68,138 | Weather |
| 2020-01-11 | Tennessee: | SERC | Severe Weather | Unknown | Weather |
| 2020-01-10 | Tennessee: Hamilton County; | SERC | Suspicious Activity | Unknown | Physical Attack |
| 2020-01-09 | Washington: King County; | WECC | Suspicious Activity | 0 | Cyber Attack |
| 2020-01-09 | Minnesota: North Dakota: Wisconsin: | MRO | System Operations | 0 | Operations |
| 2020-01-09 | Arkansas: | SPP RE | System Operations | Unknown | Operations |
| 2020-01-09 | Arkansas: Yell County; | SPP RE | Severe Weather/Transmission Interruption | 0 | Weather |
| 2019-12-31 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2019-12-31 | Texas: Nueces County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2019-12-24 | Illinois: | SERC | Suspicious Activity | 0 | Physical Attack |
| 2019-12-19 | Nebraska: | MRO | System Operations | 0 | Operations |
| 2019-12-18 | Texas: Nueces County; | TRE | System Operations | 0 | Operations |
| 2019-12-16 | Texas: | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2019-12-11 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-12-11 | Oklahoma: Stephens County; | SPP RE | Actual Physical Attack | 392 | Physical Attack |
| 2019-12-11 | North Dakota: Burleigh County; | MRO | Transmission Interruption | 1 | Transmission Interruption |
| 2019-12-08 | Texas: Dallas County; | TRE | Vandalism | 0 | Physical Attack |
| 2019-12-07 | Oklahoma: Stephens County; | SPP RE | Actual Physical Attack | 400 | Physical Attack |
| 2019-12-05 | Ohio: Kentucky: | RF | System Operations | 0 | Operations |
| 2019-12-05 | Washington: Chelan County; | WECC | Suspicious Activity | Unknown | Physical Attack |
| 2019-12-03 | Alabama: Covington County; | SERC | System Operations | 0 | Operations |
| 2019-12-03 | California: Fresno County; | WECC | Vandalism | Unknown | Physical Attack |
| 2019-11-29 | Texas: Dawson County; | TRE | Actual Physical Attack | 0 | Physical Attack |
| 2019-11-27 | California: Santa Clara County; | WECC | Vandalism | 2 | Physical Attack |
| 2019-11-27 | Michigan: Tuscola County, Sanilac County, Huron County, St. Clair County, Macomb County, Oakland County, Wayne County, Livingston County, Washtenaw County, Monroe County; | RF | Severe Weather | 107000 | Weather |
| 2019-11-26 | California: | WECC | Severe Weather | 93000 | Weather |
| 2019-11-22 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2019-11-22 | New York: Monroe County; | NPCC | System Operations | 0 | Operations |
| 2019-11-20 | California: Imperial County; | WECC | System Operations | 0 | Operations |
| 2019-11-20 | California: Colusa County, Lake County, Mendocino County, Napa County, Solano County, Sonoma County, Yolo County, Shasta County, Tehama County; | WECC | Severe Weather/Transmission Interruption | 54000 | Weather |
| 2019-11-16 | Oregon: Lane County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-11-16 | Texas: New York: Dutchess County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2019-11-08 | Utah: California: Oregon: Wyoming: | WECC | System Operations | Unknown | Operations |
| 2019-11-05 | Indiana: | RF | Vandalism | 0 | Physical Attack |
| 2019-11-05 | Idaho: Elmore County; | WECC | Vandalism | 131 | Physical Attack |
| 2019-11-05 | Florida: Duval County; | FRCC | Transmission Interruption | Unknown | Transmission Interruption |
| 2019-11-03 | Minnesota: Sherburne County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-11-01 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2019-11-01 | New York: Monroe County; | NPCC | System Operations | 0 | Operations |
| 2019-11-01 | New York: | NPCC | Severe Weather | 8000 | Weather |
| 2019-11-01 | New York: Broome County; | NPCC | Severe Weather | 66325 | Weather |
| 2019-11-01 | Connecticut: Maine: Massachusetts: Rhode Island: New Hampshire: Vermont: | NPCC | Severe Weather | 80066 | Weather |
| 2019-10-31 | Pennsylvania: | RF | Severe Weather/Distribution Interruption | 53943 | Weather |
| 2019-10-30 | California: Los Angeles County, Orange County, Riverside County, San Bernardino County, Ventura County, Kern County; | WECC | Severe Weather/Distribution Interruption | 114402 | Weather |
| 2019-10-29 | Wisconsin: Brown County, Manitowoc County, Calumet County, Winnebago County, Kewaunee County, Door County, Oconto County, Marinette County, Forest County, Langlade County, Oneida County, Vilas County, Lincoln County, Oneida County, Portage County; | MRO | System Operations | 0 | Operations |
| 2019-10-26 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-10-26 | Tennessee: | SERC | Severe Weather | 70000 | Weather |
| 2019-10-26 | Louisiana: | SERC | Severe Weather | 82124 | Weather |
| 2019-10-26 | California: | WECC | Severe Weather/Transmission Interruption | 972000 | Weather |
| 2019-10-25 | South Carolina: Cherokee County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2019-10-24 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2019-10-24 | Ohio: Lorain County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2019-10-23 | New York: Monroe County; | NPCC | System Operations | 0 | Operations |
| 2019-10-23 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2019-10-23 | California: | WECC | Severe Weather/Transmission Interruption | 50000 | Weather |
| 2019-10-20 | Texas: Cass County, Cameron County, Collin County, Dallas County, Ellis County, Erath County, Hunt County, Kaufman County, Lamar County, Panola County, Rains County, Rockwall County, Rusk County, Tarrant County, Van Zandt County, Wood County; | TRE | Severe Weather | 400000 | Weather |
| 2019-10-19 | California: Imperial County; | WECC | System Operations | 0 | Operations |
| 2019-10-19 | South Dakota: Codington County; Nebraska: Scotts Bluff County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-10-17 | Connecticut: Rhode Island: Massachusetts: Vermont: New Hampshire: Maine: | NPCC | Severe Weather | 101683 | Weather |
| 2019-10-16 | Texas: Louisiana: Arkansas: Mississippi: | SPP RE | Vandalism | 0 | Physical Attack |
| 2019-10-15 | Kansas: Shawnee County; | SPP RE | System Operations | 0 | Operations |
| 2019-10-15 | Ohio: | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2019-10-12 | Texas: | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2019-10-11 | Michigan: Wayne County; | RF | System Operations | 0 | Operations |
| 2019-10-10 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-10-10 | Colorado: Jefferson County; | WECC | System Operations | 0 | Operations |
| 2019-10-09 | California: | WECC | Severe Weather/Transmission Interruption | 737808 | Weather |
| 2019-10-06 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2019-10-06 | Texas: Hidalgo County, Cameron County; | TRE | Transmission Interruption | Unknown | Transmission Interruption |
| 2019-10-04 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2019-10-03 | Missouri: Reynolds County; | SERC | Vandalism | 0 | Physical Attack |
| 2019-09-30 | Washington: King County; | WECC | System Operations | 0 | Operations |
| 2019-09-30 | Nevada: Clark County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2019-09-30 | Idaho: Bonneville County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-09-29 | California: Alameda County; | WECC | Distribution Interruption | 50072 | Distribution Interruption |
| 2019-09-26 | Maryland: Baltimore County; | RF | System Operations | 0 | Operations |
| 2019-09-25 | Wisconsin: Marathon County; | MRO | Suspicious Activity | 0 | Physical Attack |
| 2019-09-25 | Texas: | TRE | Vandalism | Unknown | Physical Attack |
| 2019-09-25 | California: Napa County, Nevada County, Placer County, Plumas County, Sonoma County, Butte County, Yuba County; | WECC | Severe Weather | 69524 | Weather |
| 2019-09-24 | Washington: King County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-09-20 | Oklahoma: Oklahoma County; | SPP RE | System Operations | 0 | Operations |
| 2019-09-19 | Arizona: Pima County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2019-09-19 | Minnesota: Washington County; | MRO | Vandalism | 0 | Physical Attack |
| 2019-09-13 | Tennessee: | SERC | System Operations | 0 | Operations |
| 2019-09-11 | Michigan: Ionia County, Kent County, Barry County, Montcalm County, Allegan County, Ottawa County, Newaygo County; | RF | Severe Weather | 54000 | Weather |
| 2019-09-10 | Wyoming: Sweetwater County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-09-06 | North Carolina: | SERC | Severe Weather | 77000 | Weather |
| 2019-09-05 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-09-05 | North Carolina: | SERC | Severe Weather | 2000 | Weather |
| 2019-09-05 | North Carolina: South Carolina: | SERC | Severe Weather | 116000 | Weather |
| 2019-09-05 | South Carolina: | SERC | Severe Weather | 172278 | Weather |
| 2019-09-04 | Maryland: District of Columbia: | RF | System Operations | 0 | Operations |
| 2019-09-04 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2019-08-31 | Pennsylvania: New Jersey: | RF | System Operations | 0 | Operations |
| 2019-08-31 | California: Calaveras County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-08-29 | Michigan: | RF | System Operations | 0 | Operations |
| 2019-08-26 | North Dakota: | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-08-26 | Oklahoma: | SPP RE | Severe Weather/Transmission Interruption | 95000 | Weather |
| 2019-08-26 | Oklahoma: | SPP RE | Severe Weather | 103779 | Weather |
| 2019-08-25 | Washington: King County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2019-08-24 | Washington: | WECC | Suspicious Activity | 0 | Cyber Attack |
| 2019-08-21 | Massachusetts: Middlesex County[13]; | NPCC | Vandalism | 0 | Physical Attack |
| 2019-08-21 | Ohio: | RF | Vandalism | 1,397 | Physical Attack |
| 2019-08-18 | Texas: | TRE | Distribution Interruption | 86373 | Distribution Interruption |
| 2019-08-18 | Texas: | TRE | Transmission Interruption/Distribution Interruption | 61000 | Transmission Interruption |
| 2019-08-18 | Louisiana: Texas: | SPP RE | Transmission Interruption | 86373 | Transmission Interruption |
| 2019-08-15 | California: Marin County; | WECC | Distribution Interruption | 61318 | Distribution Interruption |
| 2019-08-15 | New York: Tompkins County; | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2019-08-15 | District of Columbia: Maryland: | RF | System Operations | 0 | Operations |
| 2019-08-15 | Kentucky: Ohio County; | SERC | Vandalism | 0 | Physical Attack |
| 2019-08-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2019-08-13 | California: Placer County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-08-13 | North Dakota: Mercer County; | MRO | Vandalism | Unknown | Physical Attack |
| 2019-08-13 | Texas: Williamson County; | TRE | Severe Weather | Unknown | Weather |
| 2019-08-10 | Michigan: | RF | System Operations | 0 | Operations |
| 2019-08-10 | Michigan: | RF | System Operations | 0 | Operations |
| 2019-08-09 | Texas: Travis County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2019-08-08 | Ohio: | RF | Severe Weather/Transmission Interruption | 5600 | Weather |
| 2019-08-07 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-08-07 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-08-07 | Washington: Pierce County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-08-05 | Oregon: Umatilla County; | WECC | Transmission Interruption | Unknown | Transmission Interruption |
| 2019-08-02 | Washington: Clark County; | WECC | System Operations | 0 | Operations |
| 2019-08-02 | Minnesota: Chisago County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-07-30 | Louisiana: | SERC | Severe Weather/Transmission Interruption | 13720 | Weather |
| 2019-07-28 | Michigan: | RF | System Operations | 0 | Operations |
| 2019-07-24 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-07-24 | Utah: Iron County; | WECC | Vandalism | 1 | Physical Attack |
| 2019-07-23 | California: Santa Cruz County; | WECC | Vandalism | 25 | Physical Attack |
| 2019-07-23 | Nebraska: | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-07-23 | Nebraska: Scotts Bluff County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-07-23 | Massachusetts: | NPCC | Severe Weather | 54535 | Weather |
| 2019-07-22 | New Jersey: Gloucester County; | RF | Severe Weather | 95600 | Weather |
| 2019-07-22 | Pennsylvania: Bucks County, Delaware County; | RF | Severe Weather | 165000 | Weather |
| 2019-07-21 | New York: Kings County, New York County, Queens County, Bronx County, Westchester County, Richmond County; | NPCC | Severe Weather | 45000 | Weather |
| 2019-07-20 | Missouri: Boone County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2019-07-20 | Wisconsin: Michigan: | RF | Severe Weather | 50000 | Weather |
| 2019-07-20 | Michigan: Kent County, Newaygo County, Mecosta County, Montcalm County, Isabella County, Ionia County, Allegan County, Barry County; | RF | Severe Weather | 160000 | Weather |
| 2019-07-19 | Wisconsin: Dane County; | MRO | System Operations | Unknown | Operations |
| 2019-07-19 | Michigan: | RF | Severe Weather | 400000 | Weather |
| 2019-07-17 | Oklahoma: Oklahoma County; | SPP RE | Suspicious Activity | 0 | Physical Attack |
| 2019-07-13 | New York: New York County; | NPCC | Transmission Interruption | 72669 | Transmission Interruption |
| 2019-07-13 | Louisiana: | SERC | Severe Weather | 55730 | Weather |
| 2019-07-13 | Louisiana: Acadia Parish, Avoyelles Parish, Catahoula Parish, Evangeline Parish, Grant Parish, Iberia Parish, LaSalle Parish, Natchitoches Parish, Rapides Parish, Sabine Parish, St. Landry Parish, St. Martin Parish, St. Mary Parish, St. Tammany Parish, Allen Parish, Beauregard Parish, Calcasieu Parish, Vermilion Parish, De Soto Parish, Jefferson Davis Parish, Red River Parish, Tangipahoa Parish, Vernon Parish, Washington Parish; | SERC | Severe Weather | 63000 | Weather |
| 2019-07-11 | Texas: Lynn County; | TRE | Transmission Interruption | 2043 | Transmission Interruption |
| 2019-07-10 | Utah: Salt Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-07-10 | Texas: Collin County, Dallas County, Denton County, Hood County, Johnson County, Tarrant County; | TRE | Severe Weather | 57000 | Weather |
| 2019-07-09 | Texas: Louisiana: Arkansas: Mississippi: | SPP RE | Vandalism | 0 | Physical Attack |
| 2019-07-06 | Mississippi: Panola County; | SERC | Vandalism | 3,000 | Physical Attack |
| 2019-07-02 | Idaho: Ada County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-30 | New York: Nassau County, Suffolk County; | NPCC | Severe Weather | 52498 | Weather |
| 2019-06-30 | Illinois: Cook County, DeKalb County, DuPage County, Grundy County, Iroquois County, Ford County, Lake County, Kendall County, Kankakee County, Kane County, Ogle County; | SERC | Severe Weather | 100000 | Weather |
| 2019-06-28 | Idaho: Nez Perce County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-06-26 | North Dakota: Williams County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-06-24 | Oklahoma: Oklahoma County; | SPP RE | System Operations | 0 | Operations |
| 2019-06-24 | Arkansas: | SPP RE | Severe Weather | 56451 | Weather |
| 2019-06-23 | Arkansas: | SPP RE | Transmission Interruption | 16199 | Transmission Interruption |
| 2019-06-23 | Texas: Dallas County, Denton County, Ellis County, Collin County, Ellis County, Hood County, Johnson County, Kaufman County; | TRE | Severe Weather | 265000 | Weather |
| 2019-06-22 | Alabama: Georgia: | SERC | Severe Weather | 34637 | Weather |
| 2019-06-21 | Maine: | NPCC | System Operations | 0 | Operations |
| 2019-06-21 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-21 | Kentucky: Tennessee: | SERC | Severe Weather | 50000 | Weather |
| 2019-06-20 | Virginia: | SERC | Severe Weather | 60000 | Weather |
| 2019-06-19 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-19 | Oklahoma: | SPP RE | Vandalism | 0 | Physical Attack |
| 2019-06-19 | Arkansas: | SPP RE | Severe Weather | 82045 | Weather |
| 2019-06-18 | Washington: Grant County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2019-06-16 | Texas: Dallas County, Tarrant County, Collin County, Denton County; | TRE | Severe Weather | 340000 | Weather |
| 2019-06-16 | Oklahoma: | SPP RE | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2019-06-12 | California: Imperial County, Riverside County; | WECC | Generation Inadequacy | 30907 | Generation Interruption |
| 2019-06-11 | North Dakota: Mountrail County, Williams County; | MRO | Vandalism | 0 | Physical Attack |
| 2019-06-11 | Utah: | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-09 | Texas: Collin County, Dallas County, Denton County, Palo Pinto County, Tarrant County, Ellis County, Williamson County; | TRE | Severe Weather | 558000 | Weather |
| 2019-06-08 | Texas: Potter County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2019-06-07 | Texas: Pecos County; | TRE | Transmission Interruption | 1 | Transmission Interruption |
| 2019-06-06 | Texas: Bexar County; | TRE | Severe Weather | 55017 | Weather |
| 2019-06-05 | Idaho: Bannock County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-05 | South Dakota: Lincoln County; | MRO | Vandalism | 0 | Physical Attack |
| 2019-06-05 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-06-04 | Nevada: Washoe County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2019-06-02 | California: | WECC | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2019-05-27 | Ohio: Montgomery County, Darke County, Mercer County, Miami County, Greene County; | RF | Severe Weather/Transmission Interruption | 70000 | Weather |
| 2019-05-24 | Kentucky: Shelby County; | SERC | System Operations | 0 | Operations |
| 2019-05-24 | North Dakota: Minnesota: | MRO | System Operations | 0 | Operations |
| 2019-05-24 | California: | WECC | Severe Weather | 10961 | Weather |
| 2019-05-23 | Indiana: | RF | Severe Weather/Transmission Interruption | 0 | Weather |
| 2019-05-23 | Virginia: | SERC | Severe Weather | 100000 | Weather |
| 2019-05-18 | Colorado: Wyoming: Nebraska: Utah: Daggett County; New Mexico: | WECC | Vandalism | 0 | Physical Attack |
| 2019-05-18 | Texas: Ector County, Midland County, Tarrant County, Dallas County, Stephens County, Anderson County, McLennan County, Ellis County, Hunt County, Young County, Bell County, Limestone County, Collin County, Rockwall County, Henderson County, Parker County, Falls County, Freestone County, Kaufman County, Grayson County, Smith County; | TRE | Severe Weather | 68000 | Weather |
| 2019-05-15 | West Virginia: | RF | Suspicious Activity | Unknown | Physical Attack |
| 2019-05-11 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-05-10 | Texas: | TRE | Severe Weather | 61008 | Weather |
| 2019-05-09 | Texas: Harris County; | TRE | Severe Weather/Transmission Interruption | 0 | Weather |
| 2019-05-09 | Texas: Harris County; | TRE | Severe Weather | 238015 | Weather |
| 2019-05-08 | Pennsylvania: Mercer County; | RF | Transmission Interruption | 1 | Transmission Interruption |
| 2019-05-08 | Louisiana: Texas: | SPP RE | Severe Weather/Distribution Interruption | 65844 | Weather |
| 2019-04-30 | Indiana: | RF | System Operations | 0 | Operations |
| 2019-04-29 | Virginia: Surry County; | SERC | Vandalism | 0 | Physical Attack |
| 2019-04-28 | South Carolina: | SERC | System Operations | 0 | Operations |
| 2019-04-28 | Ohio: | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2019-04-26 | Pennsylvania: | RF | Transmission Interruption | 5830 | Transmission Interruption |
| 2019-04-26 | Massachusetts: Hampden County[13]; | NPCC | Severe Weather/Transmission Interruption | 0 | Weather |
| 2019-04-26 | North Carolina: South Carolina: | SERC | Severe Weather | 54071 | Weather |
| 2019-04-25 | Arizona: Maricopa County; | WECC | Generation Inadequacy | 51366 | Generation Interruption |
| 2019-04-21 | Utah: Salt Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-04-18 | Colorado: Clear Creek County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-04-18 | Alabama: Mississippi: Georgia: Florida: | SERC | Severe Weather | 34695 | Weather |
| 2019-04-17 | Arizona: | WECC | System Operations | 0 | Operations |
| 2019-04-16 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-04-15 | Minnesota: | MRO | Vandalism | 0 | Physical Attack |
| 2019-04-15 | Virginia: | SERC | Severe Weather | 75290 | Weather |
| 2019-04-13 | Mississippi: Arkansas: Texas: Louisiana: | SERC | Severe Weather | 60467 | Weather |
| 2019-04-12 | Minnesota: Martin County; | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-04-11 | Oregon: Washington: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-04-10 | Virginia: | SERC | Suspicious Activity | 0 | Physical Attack |
| 2019-04-07 | Texas: | TRE | Severe Weather | 231956 | Weather |
| 2019-04-04 | Montana: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-04-03 | California: Fresno County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2019-04-02 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-04-02 | Utah: Salt Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-04-01 | New York: Broome County; | NPCC | System Operations | 0 | Operations |
| 2019-04-01 | New York: Monroe County; | NPCC | System Operations | 0 | Operations |
| 2019-04-01 | Nevada: Carson City, Consolidated Municipality of[19], Washoe County, Churchill County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2019-03-29 | California: San Diego County, Los Angeles County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2019-03-25 | Oregon: Lane County; | WECC | Actual Physical Attack | Unknown | Physical Attack |
| 2019-03-21 | Utah: Salt Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-03-19 | Oklahoma: | SPP RE | Vandalism | 0 | Physical Attack |
| 2019-03-13 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2019-03-13 | Texas: | TRE | Severe Weather/Transmission Interruption | 54290 | Weather |
| 2019-03-13 | Colorado: Jefferson County; | WECC | Severe Weather | 58379 | Weather |
| 2019-03-13 | Texas: Kansas: Oklahoma: | TRE | Severe Weather/Transmission Interruption | 66000 | Weather |
| 2019-03-13 | Texas: Midland County, Ector County, Tarrant County, Dallas County, Wichita County, Brown County; | TRE | Severe Weather | 154124 | Weather |
| 2019-03-05 | California: Kern County, Los Angeles County; Utah: Salt Lake County; Wyoming: Converse County; | WECC | System Operations | 0 | Cyber Attack |
| 2019-03-04 | Oklahoma: | SPP RE | Vandalism | 0 | Physical Attack |
| 2019-02-28 | Oklahoma, Arkansas, Louisiana | SPP RE | System Operations | 0 | Operations |
| 2019-02-27 | South Carolina | SERC | Suspicious Activity | 0 | Physical Attack |
| 2019-02-27 | Iowa | MRO | Transmission Interruption | 0 | Transmission Interruption |
| 2019-02-25 | Massachusetts | NPCC | Transmission Interruption | 0 | Transmission Interruption |
| 2019-02-25 | Connecticut, Massachusetts, New Hampshire, Maine, Vermont, Rhode Island | NPCC | Severe Weather | 72332 | Weather |
| 2019-02-24 | Pennsylvania | RF | Severe Weather | 94048 | Weather |
| 2019-02-24 | Michigan | RF | Severe Weather | 115000 | Weather |
| 2019-02-24 | Ohio, Virginia, West Virginia | RF | Severe Weather | 118781 | Weather |
| 2019-02-24 | Pennsylvania | RF | Severe Weather | 132000 | Weather |
| 2019-02-24 | Pennsylvania | RF | Severe Weather | 137216 | Weather |
| 2019-02-24 | Ohio | RF | Severe Weather | 157274 | Weather |
| 2019-02-23 | Virginia | SERC | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2019-02-20 | Wisconsin, Minnesota, Iowa, Illinois | MRO | System Operations | 0 | Operations |
| 2019-02-19 | Texas | TRE | Vandalism | 0 | Physical Attack |
| 2019-02-14 | New Jersey | RF | Vandalism | 0 | Physical Attack |
| 2019-02-14 | Utah | WECC | Vandalism | 0 | Physical Attack |
| 2019-02-13 | California | WECC | Severe Weather | 121000 | Weather |
| 2019-02-08 | Pennsylvania | RF | Vandalism | 0 | Physical Attack |
| 2019-02-08 | Washington | WECC | Severe Weather | 50940 | Weather |
| 2019-02-07 | Arkansas | SERC | Severe Weather/Transmission Interruption | 3370 | Weather |
| 2019-02-07 | Michigan | RF | Severe Weather | 233000 | Weather |
| 2019-02-05 | California | WECC | Severe Weather | 33200 | Weather |
| 2019-02-02 | California | WECC | Vandalism | 0 | Physical Attack |
| 2019-02-01 | Massachusetts | NPCC | System Operations | 0 | Operations |
| 2019-02-01 | Nevada | WECC | Vandalism | 1 | Physical Attack |
| 2019-01-31 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2019-01-30 | Illinois: Scott County; | SERC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2019-01-30 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2019-01-30 | Illinois: Pike County; | SERC | Severe Weather | Unknown | Weather |
| 2019-01-30 | Michigan: | RF | Severe Weather | Unknown | Weather |
| 2019-01-29 | Louisiana: Washington Parish; | SERC | Transmission Interruption | Unknown | Transmission Interruption |
| 2019-01-28 | Utah: Iron County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2019-01-24 | Ohio: | RF | System Operations | 0 | Operations |
| 2019-01-23 | Colorado: Larimer County; | WECC | System Operations | 0 | Operations |
| 2019-01-18 | Nebraska: | MRO | Transmission Interruption | Unknown | Transmission Interruption |
| 2019-01-16 | Texas: Nueces County; | TRE | System Operations | 0 | Operations |
| 2019-01-16 | California: | WECC | Severe Weather | 126700 | Weather |
| 2019-01-15 | Pennsylvania: | RF | Vandalism | 0 | Physical Attack |
| 2019-01-14 | Michigan: | RF | Actual Physical Attack | Unknown | Physical Attack |
| 2019-01-13 | North Carolina: South Carolina: | SERC | Severe Weather | Unknown | Weather |
| 2019-01-12 | New Hampshire: | NPCC | System Operations | 0 | Operations |
| 2019-01-12 | Missouri: Jackson County; Kansas: Johnson County; | SPP RE | Severe Weather | 112530 | Weather |
| 2019-01-12 | Missouri: Nebraska: | SERC | Severe Weather | 116600 | Weather |
| 2019-01-11 | Maine: | RF | System Operations | 0 | Operations |
| 2019-01-10 | Montana: Valley County; | WECC | System Operations | 2 | Operations |
| 2019-01-09 | New Mexico: San Juan County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2019-01-07 | Michigan: | RF | System Operations | 0 | Operations |
| 2019-01-06 | California: Sacramento County; | WECC | Severe Weather | 90382 | Weather |
| 2019-01-06 | Washington: King County, Thurston County, Pierce County; | WECC | Severe Weather | 230000 | Weather |
| 2019-01-06 | Washington: | WECC | Severe Weather | 230000 | Weather |
| 2019-01-05 | Washington: | WECC | System Operations | Unknown | Operations |
| 2018-12-30 | Washington: King County; | WECC | System Operations | 0 | Operations |
| 2018-12-27 | Maryland: Montgomery County, Prince George's County; District of Columbia: | RF | System Operations | 0 | Operations |
| 2018-12-27 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-27 | New York: New York County; | NPCC | Transmission Interruption | Unknown | Transmission Interruption |
| 2018-12-26 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-20 | Washington: Skagit County, Snohomish County, King County, Kitsap County, Island County; | WECC | Severe Weather | 165000 | Weather |
| 2018-12-18 | Utah: Salt Lake County; California: Oregon: | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-14 | Texas: Jasper County; | TRE | Suspicious Activity | 0 | Physical Attack |
| 2018-12-14 | Washington: Snohomish County; | WECC | Severe Weather | 60000 | Weather |
| 2018-12-14 | Washington: King County, Kitsap County, Island County, Pierce County, Thurston County, Whatcom County, Skagit County, Kittitas County; | WECC | Severe Weather | 150000 | Weather |
| 2018-12-13 | California: Stanislaus County, San Joaquin County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2018-12-12 | Oregon: Gilliam County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-11 | Texas: Travis County; | TRE | System Operations | 0 | Operations |
| 2018-12-11 | Oregon: Josephine County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-09 | Virginia: Loudoun County; | SERC | Vandalism | 0 | Physical Attack |
| 2018-12-09 | Alabama: Georgia: | SERC | Severe Weather | 41126 | Weather |
| 2018-12-09 | North Carolina: | SERC | Severe Weather/Transmission Interruption | 50000 | Weather |
| 2018-12-09 | North Carolina: | SERC | Severe Weather | 70000 | Weather |
| 2018-12-07 | Utah: Weber County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2018-12-05 | Alabama: Chambers County; | SERC | Vandalism | 0 | Physical Attack |
| 2018-12-05 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-12-03 | Texas: | TRE | Transmission Interruption | Unknown | Transmission Interruption |
| 2018-12-02 | Maryland: | RF | System Operations | 0 | Operations |
| 2018-12-01 | Florida: Leon County; | FRCC | System Operations | 0 | Operations |
| 2018-12-01 | Pennsylvania: | RF | Vandalism | 0 | Physical Attack |
| 2018-11-27 | Maine: New Hampshire: Vermont: | NPCC | Severe Weather | 32000 | Weather |
| 2018-11-25 | Illinois: Will County, DuPage County, Kane County, McHenry County, Winnebago County, Ogle County, DeKalb County, Lee County, Grundy County, Lake County, Cook County, Livingston County, Stephenson County, LaSalle County, Kankakee County, Kendall County, Boone County; | SERC | Severe Weather | 313448 | Weather |
| 2018-11-18 | Nebraska: Holt County; | MRO | Vandalism | 0 | Physical Attack |
| 2018-11-15 | Virginia: West Virginia: | RF | Severe Weather | 50600 | Weather |
| 2018-11-15 | Indiana: | RF | Severe Weather | 55000 | Weather |
| 2018-11-15 | Kentucky: Ohio: | SERC | Severe Weather | 104000 | Weather |
| 2018-11-15 | Kentucky: | SERC | Severe Weather | 150000 | Weather |
| 2018-11-13 | Arkansas: Oklahoma: Louisiana: Texas: | SPP RE | System Operations | 0 | Operations |
| 2018-11-10 | Wisconsin: | MRO | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2018-11-09 | Iowa: Muscatine County; | MRO | System Operations | 0 | Operations |
| 2018-11-08 | California: Butte County; | WECC | Natural Disaster/Transmission Interruption | 11844 | Natural Disaster |
| 2018-11-08 | Nevada: Carson City, Consolidated Municipality of[19]; | WECC | Vandalism | 0 | Physical Attack |
| 2018-11-06 | Tennessee: | SERC | Severe Weather | 61000 | Weather |
| 2018-11-03 | Illinois: | SERC | System Operations | 0 | Operations |
| 2018-11-03 | Connecticut: Massachusetts: New Hampshire: Vermont: Maine: Rhode Island: | NPCC | Severe Weather | 62000 | Weather |
| 2018-11-02 | Minnesota: Douglas County; | MRO | Vandalism | 0 | Physical Attack |
| 2018-10-31 | Texas: Harris County; | TRE | Severe Weather | 140932 | Weather |
| 2018-10-30 | Maryland: Baltimore, City of; | RF | System Operations | 0 | Operations |
| 2018-10-29 | California: Shasta County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-10-29 | Minnesota: Douglas County; | MRO | Vandalism | 0 | Physical Attack |
| 2018-10-24 | Michigan: Wayne County; | RF | System Operations | 0 | Operations |
| 2018-10-22 | Utah: Salt Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-10-21 | West Virginia: | RF | Severe Weather | 63408 | Weather |
| 2018-10-16 | Connecticut: Rhode Island: Massachusetts: Vermont: New Hampshire: Maine: | NPCC | Severe Weather | 18000 | Weather |
| 2018-10-14 | California: | WECC | Natural Disaster | 60000 | Natural Disaster |
| 2018-10-12 | Maryland: Garrett County; | RF | Transmission Interruption | 0 | Transmission Interruption |
| 2018-10-11 | South Carolina: | SERC | Severe Weather | 71654 | Weather |
| 2018-10-11 | North Carolina: | SERC | Severe Weather | 117000 | Weather |
| 2018-10-11 | North Carolina: South Carolina: | SERC | Severe Weather | 170222 | Weather |
| 2018-10-11 | North Carolina: South Carolina: | SERC | Severe Weather | 240807 | Weather |
| 2018-10-10 | Maine: | NPCC | System Operations | 0 | Operations |
| 2018-10-10 | Utah: | WECC | Vandalism | 0 | Physical Attack |
| 2018-10-10 | Florida: Alabama: Georgia: | FRCC | Severe Weather | 45604 | Weather |
| 2018-10-10 | Florida: | FRCC | Severe Weather | 55000 | Weather |
| 2018-10-10 | Florida: | FRCC | Severe Weather | 60717 | Weather |
| 2018-10-09 | Colorado: El Paso County; | WECC | System Operations | 0 | Operations |
| 2018-10-04 | California: | WECC | Suspicious Activity | 0 | Physical Attack |
| 2018-10-04 | Oklahoma: Osage County; | SPP RE | Vandalism | 2,089 | Physical Attack |
| 2018-10-03 | Illinois: | SERC | System Operations | 0 | Operations |
| 2018-10-01 | Ohio: Indiana: Michigan: Kentucky: West Virginia: Virginia: | RF | System Operations | Unknown | Operations |
| 2018-09-28 | Ohio: | RF | System Operations | 0 | Operations |
| 2018-09-26 | Texas: Harris County; | TRE | Transmission Interruption | 0 | Transmission Interruption |
| 2018-09-25 | Illinois: | SERC | System Operations | 0 | Operations |
| 2018-09-22 | California: Los Angeles County; | WECC | Natural Disaster | 2500 | Natural Disaster |
| 2018-09-20 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-09-19 | Indiana: Benton County; | RF | System Operations | 0 | Operations |
| 2018-09-16 | North Carolina: South Carolina: | SERC | Severe Weather | 50000 | Weather |
| 2018-09-15 | Mississippi: Forrest County; | SERC | System Operations | 420000 | Public Appeal |
| 2018-09-15 | Louisiana: | SERC | System Operations | Unknown | Public Appeal |
| 2018-09-15 | South Carolina: Horry County, Chesterfield County, Dillon County, Georgetown County, Marlboro County, Darlington County; | SERC | Severe Weather | 50100 | Weather |
| 2018-09-13 | North Carolina: | SERC | Severe Weather | 325000 | Weather |
| 2018-09-13 | North Carolina: South Carolina: | SERC | Severe Weather | 1457583 | Weather |
| 2018-09-12 | Texas: | TRE | Suspicious Activity | 0 | Physical Attack |
| 2018-09-06 | Florida: Hillsborough County; | FRCC | Transmission Interruption | 0 | Transmission Interruption |
| 2018-09-05 | California: Kern County; | WECC | Vandalism | Unknown | Physical Attack |
| 2018-09-01 | Arkansas: | SPP RE | Suspicious Activity | 0 | Physical Attack |
| 2018-08-31 | Oregon: | WECC | Natural Disaster/Transmission Interruption | 50000 | Natural Disaster |
| 2018-08-31 | New York: New York County, Westchester County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2018-08-30 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-08-29 | Maryland: Montgomery County; District of Columbia: | RF | Suspicious Activity | 0 | Physical Attack |
| 2018-08-29 | Arkansas: | SERC | Suspicious Activity | 0 | Physical Attack |
| 2018-08-29 | Illinois: | SERC | Severe Weather | 100000 | Weather |
| 2018-08-28 | Ohio: Montgomery County; | RF | System Operations | 0 | Operations |
| 2018-08-28 | Michigan: Benzie County, Barry County, Grand Traverse County, Kalkaska County, Mason County, Oceana County, Muskegon County, Kent County, Newaygo County, Montcalm County, Mecosta County, Antrim County, Eaton County, Ionia County, Isabella County, Clare County, Saginaw County; | RF | Severe Weather | 110000 | Weather |
| 2018-08-26 | Michigan: Muskegon County, Newaygo County, Oceana County, Mason County, Kent County, Mecosta County, Montcalm County, Isabella County, Midland County, Saginaw County; | RF | Severe Weather | 67000 | Weather |
| 2018-08-24 | Virginia: Roanoke County; | SERC | System Operations | 0 | Operations |
| 2018-08-20 | Louisiana: | SERC | System Operations | 0 | Operations |
| 2018-08-19 | Utah: Box Elder County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-08-17 | California: | WECC | System Operations | 0 | Operations |
| 2018-08-15 | Missouri: Boone County; | SERC | Vandalism | 0 | Physical Attack |
| 2018-08-14 | Virginia: Hanover County; | SERC | Suspicious Activity | 0 | Physical Attack |
| 2018-08-07 | California: Butte County; | WECC | Natural Disaster | 485 | Natural Disaster |
| 2018-08-07 | California: Butte County; | WECC | Natural Disaster | 11383 | Natural Disaster |
| 2018-08-04 | California: Kern County; | WECC | Vandalism | Unknown | Physical Attack |
| 2018-08-01 | Montana: | WECC | Vandalism | 0 | Physical Attack |
| 2018-07-31 | California: Kern County; | WECC | Suspicious Activity | Unknown | Physical Attack |
| 2018-07-30 | Arizona: Maricopa County; | WECC | Severe Weather | 82000 | Weather |
| 2018-07-29 | California: | WECC | Natural Disaster | 57670 | Natural Disaster |
| 2018-07-28 | Nevada: Nye County; | WECC | System Operations | 0 | Operations |
| 2018-07-27 | Washington: Clark County; | WECC | System Operations | Unknown | Islanding |
| 2018-07-27 | New York: New York County; | NPCC | Severe Weather/Transmission Interruption | 0 | Weather |
| 2018-07-26 | California: Shasta County; | WECC | Natural Disaster | Unknown | Natural Disaster |
| 2018-07-23 | Florida: Pinellas County; | FRCC | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2018-07-21 | Georgia: | SERC | Severe Weather | 42901 | Weather |
| 2018-07-21 | Arkansas: | SERC | Severe Weather | 64930 | Weather |
| 2018-07-20 | Maine: Hancock County; | NPCC | System Operations | 0 | Physical Attack |
| 2018-07-20 | Kentucky: | SERC | Severe Weather | 87833 | Weather |
| 2018-07-19 | Louisiana: Rapides Parish; | SERC | System Operations | 0 | Operations |
| 2018-07-19 | Kentucky: | SERC | System Operations | Unknown | Operations |
| 2018-07-18 | California: Fresno County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2018-07-18 | Oregon: | WECC | Severe Weather/Transmission Interruption | Unknown | Weather |
| 2018-07-16 | California: Merced County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2018-07-14 | Ohio: | RF | System Operations | Unknown | Operations |
| 2018-07-11 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2018-07-11 | Tennessee: | SERC | Transmission Interruption | 26195 | Transmission Interruption |
| 2018-07-09 | California: Merced County, Kern County; Nevada: Clark County; | WECC | System Operations | 0 | Operations |
| 2018-07-04 | Tennessee: | SERC | System Operations | 0 | Operations |
| 2018-07-04 | Colorado: Pueblo County; | WECC | Vandalism | 5,058 | Physical Attack |
| 2018-06-30 | Texas: Travis County, Williamson County; | TRE | System Operations | 0 | Operations |
| 2018-06-30 | California: Los Angeles County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-06-29 | Kentucky: | SERC | System Operations | Unknown | Operations |
| 2018-06-29 | Minnesota: St. Louis County; | MRO | Severe Weather | Unknown | Weather |
| 2018-06-28 | Alabama: Georgia: | SERC | Severe Weather | 48109 | Weather |
| 2018-06-28 | Missouri: Illinois: | SERC | Severe Weather | 112000 | Weather |
| 2018-06-27 | New York: New York County; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2018-06-22 | Washington: | WECC | Severe Weather | 4200000 | Weather |
| 2018-06-20 | Florida: Palm Beach County; | FRCC | Transmission Interruption | 27000 | Transmission Interruption |
| 2018-06-18 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 112927 | Weather |
| 2018-06-12 | California: Kern County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-06-12 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-06-10 | Kentucky: | SERC | System Operations | Unknown | Operations |
| 2018-06-09 | Georgia: | SERC | System Operations | 0 | Operations |
| 2018-06-04 | Florida: Alachua County; | FRCC | Vandalism | 0 | Physical Attack |
| 2018-06-02 | Missouri: Jackson County, Clay County, Platte County, Andrew County; Kansas: Johnson County; | SPP RE | Severe Weather | 103535 | Weather |
| 2018-05-26 | Texas: Harris County; | TRE | Severe Weather | 163932 | Weather |
| 2018-05-17 | California: | WECC | Transmission Disruption | 70000 | Transmission Interruption |
| 2018-05-17 | California: Contra Costa County; | WECC | Severe Weather | 70000 | Weather |
| 2018-05-15 | Massachusetts: | NPCC | Vandalism | 0 | Physical Attack |
| 2018-05-15 | New York: | NPCC | Severe Weather | 49999 | Weather |
| 2018-05-15 | Pennsylvania: | RF | Severe Weather | 52872 | Weather |
| 2018-05-15 | New York: Dutchess County, Ulster County, Orange County; | NPCC | Severe Weather | 72000 | Weather |
| 2018-05-15 | New Jersey: | RF | Severe Weather | 82372 | Weather |
| 2018-05-15 | Pennsylvania: Lehigh County, Schuylkill County, Cumberland County, Lancaster County, Northampton County, Berks County, Clinton County, Susquehanna County, Bucks County, Carbon County, Chester County, Columbia County, Juniata County; | RF | Severe Weather | 114000 | Weather |
| 2018-05-15 | Connecticut: Massachusetts: Rhode Island: | NPCC | Severe Weather | 120000 | Weather |
| 2018-05-14 | Virginia: | SERC | Severe Weather | 112000 | Weather |
| 2018-05-08 | Utah: Washington County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2018-05-07 | New York: Tompkins County; | NPCC | Suspected Physical Attack | 0 | Physical Attack |
| 2018-05-05 | Vermont: New Hampshire: Maine: | NPCC | Severe Weather | 31900 | Weather |
| 2018-05-04 | New Hampshire: Vermont: | NPCC | Severe Weather | 56000 | Weather |
| 2018-05-04 | Michigan: Calhoun County, Genesee County, Ingham County, Kent County, Macomb County, Midland County, Saginaw County, Gratiot County; | RF | Severe Weather | 90000 | Weather |
| 2018-05-04 | New York: | NPCC | Severe Weather | 106150 | Weather |
| 2018-05-04 | Michigan: | RF | Severe Weather | 300000 | Weather |
| 2018-05-02 | North Carolina: | SERC | Vandalism | 0 | Physical Attack |
| 2018-04-15 | North Carolina: South Carolina: | SERC | Severe Weather | 78100 | Weather |
| 2018-04-15 | Michigan: | RF | Severe Weather | 389591 | Weather |
| 2018-04-14 | Louisiana: Arkansas: Mississippi: Texas: | SERC | Severe Weather | 56350 | Weather |
| 2018-04-09 | Washington: Walla Walla County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-04-09 | Florida: Palm Beach County; | FRCC | Sabotage | 27,000 | Physical Attack |
| 2018-04-09 | Utah: Salt Lake County; | WECC | Transmission Interruption | 57000 | Transmission Interruption |
| 2018-04-09 | Utah: | WECC | Transmission Interruption | 250000 | Transmission Interruption |
| 2018-04-05 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 65932 | Weather |
| 2018-04-04 | New York: | NPCC | Severe Weather | 72896 | Weather |
| 2018-04-03 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-03-28 | Washington: Walla Walla County; | WECC | Vandalism | 1,185 | Physical Attack |
| 2018-03-26 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-03-24 | Virginia: West Virginia: | RF | Severe Weather | 81227 | Weather |
| 2018-03-20 | New Jersey: Atlantic County, Camden County, Cape May County, Gloucester County, Salem County, Cumberland County, Burlington County; | RF | Severe Weather | 124000 | Weather |
| 2018-03-19 | Alabama: Georgia: | SERC | Severe Weather | 78220 | Weather |
| 2018-03-13 | Colorado: | WECC | Suspicious Activity | 0 | Physical Attack |
| 2018-03-13 | Massachusetts: Rhode Island: | NPCC | Severe Weather | 123629 | Weather |
| 2018-03-12 | New York: Dutchess County; | NPCC | Vandalism | 0 | Physical Attack |
| 2018-03-07 | New Jersey: | RF | Severe Weather | 58000 | Weather |
| 2018-03-07 | Connecticut: Massachusetts: Maine: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 102000 | Weather |
| 2018-03-07 | Pennsylvania: | RF | Severe Weather | 120000 | Weather |
| 2018-03-07 | New Jersey: | RF | Severe Weather | 216800 | Weather |
| 2018-03-02 | Washington: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2018-03-02 | New York: | NPCC | Severe Weather | 50000 | Weather |
| 2018-03-02 | Delaware: Maryland: | RF | Severe Weather | 60000 | Weather |
| 2018-03-02 | New York: | NPCC | Severe Weather | 63331 | Weather |
| 2018-03-02 | Virginia: West Virginia: | RF | Severe Weather | 65198 | Weather |
| 2018-03-02 | New York: New York County, Westchester County; | NPCC | Severe Weather | 72353 | Weather |
| 2018-03-02 | New York: Dutchess County, Orange County, Greene County, Ulster County, Putnam County, Sullivan County, Albany County, Columbia County; | NPCC | Severe Weather | 90000 | Weather |
| 2018-03-02 | Pennsylvania: Berks County, Bucks County, Carbon County, Chester County, Clinton County, Columbia County, Cumberland County, Dauphin County, Juniata County, Lackawanna County, Lancaster County, Lebanon County, Lehigh County, Luzerne County, Lycoming County, Monroe County, Montgomery County, Montour County, Northampton County, Northumberland County, Pike County, Schuylkill County, Snyder County; | RF | Severe Weather | 126000 | Weather |
| 2018-03-02 | Pennsylvania: | RF | Severe Weather | 233136 | Weather |
| 2018-03-02 | Ohio: | RF | Severe Weather | 249322 | Weather |
| 2018-03-02 | Connecticut: Massachusetts: Rhode Island: | NPCC | Severe Weather | 325000 | Weather |
| 2018-03-02 | Maryland: | RF | Severe Weather | 474019 | Weather |
| 2018-03-02 | Pennsylvania: | RF | Severe Weather | 630000 | Weather |
| 2018-03-01 | California: | WECC | Severe Weather | 10898 | Weather |
| 2018-03-01 | Ohio: | RF | Severe Weather | 86501 | Weather |
| 2018-03-01 | Michigan: Wayne County, Washtenaw County, Oakland County, Macomb County, Monroe County; | RF | Severe Weather | 95000 | Weather |
| 2018-02-28 | Florida: | FRCC | System Operations | 0 | Cyber Attack |
| 2018-02-28 | Florida: | FRCC | System Operations | 0 | Cyber Attack |
| 2018-02-17 | Oregon: Washington: California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-02-17 | Oregon: Washington: California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-02-08 | California: | WECC | System Operations | 10900 | Islanding |
| 2018-02-04 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2018-01-25 | Pennsylvania: Montgomery County; | RF | Suspicious Activity | Unknown | Cyber Attack |
| 2018-01-18 | Mississippi: | SERC | System Operations | 420000 | Public Appeal |
| 2018-01-18 | Louisiana: | SERC | System Operations | Unknown | Public Appeal |
| 2018-01-18 | Arkansas: Mississippi: Louisiana: Texas: | SERC | Severe Weather | Unknown | Weather |
| 2018-01-17 | Mississippi: | SERC | System Operations | 420000 | Public Appeal |
| 2018-01-17 | Louisiana: | SERC | System Operations | Unknown | Public Appeal |
| 2018-01-16 | Tennessee: Shelby County; | SERC | System Operations | Unknown | Public Appeal |
| 2018-01-16 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2018-01-16 | Tennessee: | SERC | Severe Weather | Unknown | Weather |
| 2018-01-15 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2018-01-12 | Michigan: Midland County, Genesee County; | RF | System Operations | 23007 | Cyber Attack |
| 2018-01-04 | Texas: Midland County; | TRE | Actual Physical Attack | 500 | Physical Attack |
| 2018-01-02 | New York: Niagara County; | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2018-01-02 | South Carolina: | SERC | Severe Weather | 717000 | Weather |
| 2018-01-02 | North Carolina: South Carolina: | SERC | Severe Weather | Unknown | Weather |
| 2018-01-01 | Tennessee: | SERC | System Operations | Unknown | Public Appeal |
| 2018-01-01 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2018-01-01 | Tennessee: | SERC | Severe Weather | Unknown | Weather |
| 2017-12-31 | Colorado: | WECC | Vandalism | 0 | Physical Attack |
| 2017-12-29 | New York: Tompkins County; | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2017-12-29 | Texas: Calhoun County; | TRE | Suspicious Activity | Unknown | Physical Attack |
| 2017-12-19 | Florida: Alachua County; | FRCC | Vandalism | 0 | Physical Attack |
| 2017-12-18 | Mississippi: | SERC | Vandalism | 0 | Physical Attack |
| 2017-12-13 | New York: Suffolk County; | NPCC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-12-13 | Connecticut: New Haven County[13]; | NPCC | Suspicious Activity | 0 | Physical Attack |
| 2017-12-12 | New York: Saratoga County; | NPCC | Actual Physical Attack | 1,208 | Physical Attack |
| 2017-12-10 | California: Ventura County, Santa Barbara County; | WECC | Severe Weather/Transmission Interruption | 51323 | Weather |
| 2017-12-08 | Louisiana: Mississippi: | SERC | Severe Weather | 79000 | Weather |
| 2017-12-08 | Alabama: Georgia: Mississippi: | SERC | Severe Weather | 301872 | Weather |
| 2017-12-07 | Texas: Bexar County; | TRE | Severe Weather | 88000 | Weather |
| 2017-12-05 | Louisiana: | SERC | Vandalism | 0 | Physical Attack |
| 2017-12-05 | Michigan: Oscoda County, Isabella County, Roscommon County, Ogemaw County; | RF | Severe Weather | 117500 | Weather |
| 2017-12-04 | California: | WECC | Severe Weather/Transmission Interruption | 263000 | Weather |
| 2017-11-24 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2017-11-16 | Oregon: Tillamook County; | WECC | Vandalism | 0 | Physical Attack |
| 2017-11-13 | Washington: King County; | WECC | Severe Weather | 68430 | Weather |
| 2017-11-13 | Washington: Island County, King County, Kitsap County, Thurston County, Skagit County, Whatcom County; | WECC | Severe Weather | 236100 | Weather |
| 2017-11-09 | Colorado: Weld County; | WECC | System Operations | 0 | Cyber Attack |
| 2017-11-07 | Louisiana: | SERC | Suspicious Activity | 0 | Physical Attack |
| 2017-11-05 | Ohio: | RF | Severe Weather | 89216 | Weather |
| 2017-11-01 | Kentucky: Daviess County; | SERC | Generation Inadequacy | 0 | Generation Interruption |
| 2017-10-29 | Connecticut: Massachusetts: New Hampshire: Maine: Rhode Island: Vermont: | NPCC | Severe Weather | 310453 | Weather |
| 2017-10-26 | Montana: Big Horn County; | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2017-10-26 | Washington: Whatcom County; Montana: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2017-10-26 | Washington: Clark County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2017-10-25 | California: | WECC | Suspicious Activity | Unknown | Cyber Attack |
| 2017-10-23 | North Carolina: South Carolina: | SERC | Severe Weather | 115144 | Weather |
| 2017-10-22 | Louisiana: Mississippi: Arkansas: Texas: | SERC | Severe Weather | Unknown | Weather |
| 2017-10-20 | Texas: | TRE | Vandalism | 0 | Physical Attack |
| 2017-10-20 | Washington: | WECC | Severe Weather | Unknown | Weather |
| 2017-10-19 | Utah: Salt Lake County; | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2017-10-16 | Washington: Montana: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2017-10-16 | Washington: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2017-10-12 | Mississippi: Coahoma County; | SERC | System Operations | Unknown | Public Appeal |
| 2017-10-09 | California: | WECC | Severe Weather/Transmission Interruption | 117900 | Weather |
| 2017-10-09 | California: | WECC | Severe Weather | Unknown | Weather |
| 2017-10-08 | Alabama: Florida: Mississippi: | SERC | Severe Weather | 91945 | Weather |
| 2017-10-04 | Tennessee: Shelby County; | SERC | Vandalism | 0 | Physical Attack |
| 2017-10-04 | Mississippi: | SERC | Actual Physical Attack | Unknown | Physical Attack |
| 2017-09-11 | Florida: | FRCC | Severe Weather | 20000 | Weather |
| 2017-09-11 | Georgia: | SERC | Severe Weather | 39659 | Weather |
| 2017-09-11 | South Carolina: | SERC | Severe Weather | 154832 | Weather |
| 2017-09-11 | North Carolina: South Carolina: | SERC | Severe Weather | 265729 | Weather |
| 2017-09-10 | Florida: | FRCC | Severe Weather | 452555 | Weather |
| 2017-09-10 | Florida: Alachua County, Bay County, Brevard County, Citrus County, Columbia County, Dixie County, Flagler County, Franklin County, Gilchrist County, Gulf County, Hamilton County, Hardee County, Hernando County, Highlands County, Jefferson County, Lafayette County, Lake County, Leon County, Levy County, Madison County, Marion County, Orange County, Osceola County, Pasco County, Pinellas County, Polk County, Seminole County, Sumter County, Suwannee County, Taylor County, Volusia County, Wakulla County; | FRCC | Severe Weather | 1000000 | Weather |
| 2017-09-09 | Florida: Hillsborough County, Pasco County, Polk County; | FRCC | Severe Weather | 425000 | Weather |
| 2017-09-09 | Florida: | FRCC | Severe Weather | 3500000 | Weather |
| 2017-09-01 | California: | WECC | Severe Weather | 0 | Weather |
| 2017-08-31 | California: Los Angeles County; | WECC | Severe Weather | 0 | Weather |
| 2017-08-30 | Texas: | TRE | Severe Weather | 78500 | Weather |
| 2017-08-27 | Texas: Harris County; | TRE | Severe Weather | 1076868 | Weather |
| 2017-08-26 | Texas: | TRE | Severe Weather | 1076868 | Weather |
| 2017-08-26 | Texas: | TRE | Severe Weather | Unknown | Weather |
| 2017-08-25 | Texas: Matagorda County, Nueces County, Aransas County, Refugio County, San Patricio County, Calhoun County, Victoria County, Jackson County, Live Oak County, Jim Wells County, Bee County, Lavaca County; | TRE | Severe Weather | 220400 | Weather |
| 2017-08-25 | Texas: | TRE | Severe Weather | 330000 | Weather |
| 2017-08-21 | California: Plumas County; | WECC | System Operations | 2 | Islanding |
| 2017-08-05 | California: Humboldt County; | WECC | Vandalism | 0 | Physical Attack |
| 2017-07-27 | California: Butte County | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-07-23 | Missouri: Illinois | SERC | Severe Weather | 82000 | Weather |
| 2017-07-22 | Missouri: Clay County, Jackson County, Lafayette County, Platte County; Kansas: Johnson County, Miami County, Wyandotte County | SERC | Severe Weather | 112540 | Weather |
| 2017-07-22 | Missouri | SERC | Severe Weather | 115000 | Weather |
| 2017-07-22 | Missouri | SERC | Severe Weather | 131000 | Weather |
| 2017-07-20 | Utah: Beaver County | WECC | Vandalism | 0 | Physical Attack |
| 2017-07-18 | Missouri | SERC | Actual Physical Attack | 700 | Physical Attack |
| 2017-07-18 | Nevada | WECC | Severe Weather | 0 | Weather |
| 2017-07-12 | Tennessee | SERC | Vandalism | 0 | Physical Attack |
| 2017-07-12 | Tennessee: Shelby County | SERC | Vandalism | Unknown | Physical Attack |
| 2017-07-11 | Minnesota | MRO | Vandalism | 0 | Physical Attack |
| 2017-07-08 | California: Los Angeles County | WECC | Transmission Interruption | 176867 | Transmission Interruption |
| 2017-07-07 | Michigan: Kent County, Ottawa County, Muskegon County, Barry County, Oceana County, Eaton County | RFC | Severe Weather | 160000 | Weather |
| 2017-07-06 | Idaho: Jerome County | WECC | Vandalism | 0 | Physical Attack |
| 2017-06-30 | Idaho: Ada County | WECC | Vandalism | 0 | Physical Attack |
| 2017-06-29 | Louisiana: Orleans Parish | SERC | Vandalism | 6,467 | Physical Attack |
| 2017-06-22 | Michigan: Wayne County, Monroe County | RFC | Severe Weather | 118,631 | Weather |
| 2017-06-21 | Oregon: Baker County | WECC | Physical Attack | 0 | Physical Attack |
| 2017-06-17 | Kansas, Missouri: Jackson County, Platte County, Clay County, Cass County | MRO | Severe Weather | 84737 | Weather |
| 2017-06-16 | Arkansas | SERC | Severe Weather | 76,000 | Weather |
| 2017-06-16 | Nebraska: Cass County, Douglas County, Sarpy County | MRO | Severe Weather | 76,000 | Weather |
| 2017-06-15 | Alabama, Georgia | SERC | Severe Weather | 82,713 | Weather |
| 2017-06-11 | Michigan | RFC | Transmission Interruption | Unknown | Transmission Interruption |
| 2017-06-11 | Wisconsin | MRO | Severe Weather | 53,610 | Weather |
| 2017-06-11 | Minnesota | MRO | Severe Weather | 70,000 | Weather |
| 2017-06-07 | Washington: Yakima County | WECC | Vandalism | 0 | Physical Attack |
| 2017-05-28 | Nevada: Clark County | WECC | Vandalism | 0 | Physical Attack |
| 2017-05-28 | Louisiana: Texas | SERC | Severe Weather | 103,000 | Weather |
| 2017-05-28 | Texas: Louisiana | TRE | Severe Weather | 103,000 | Weather |
| 2017-05-27 | Tennessee: Shelby County, Putnam County, Knox County, Davidson County, Hamilton County; Alabama: Madison County | SERC | Severe Weather | 116,000 | Weather |
| 2017-05-27 | Tennessee: Shelby County | SERC | Severe Weather | 188,000 | Weather |
| 2017-05-23 | Tennessee: Davidson County | SERC | Vandalism | 4,700 | Physical Attack |
| 2017-05-21 | Idaho: Lincoln County, Jerome County | WECC | Vandalism | 9,598 | Physical Attack |
| 2017-05-19 | Missouri: St. Louis County | SERC | Severe Weather | 70,696 | Weather |
| 2017-05-11 | Washington: Yakima County | WECC | Vandalism | 0 | Physical Attack |
| 2017-05-07 | California: Fresno County | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-05-07 | Kentucky: Daviess County | SERC | Generation Inadequacy | 0 | Generation Interruption |
| 2017-05-04 | Alabama: Georgia | SERC | Severe Weather | 60,377 | Weather |
| 2017-05-03 | California | WECC | Generation Inadequacy | 0 | Generation Interruption |
| 2017-05-03 | California | WECC | Generation Inadequacy | Unknown | Generation Interruption |
| 2017-05-03 | Pennsylvania: Philadelphia County, Montgomery County | RFC | Vandalism | 0 | Physical Attack |
| 2017-05-01 | Ohio | RFC | Severe Weather | 92,390 | Weather |
| 2017-04-30 | Arkansas, Louisiana, Mississippi | SERC | Severe Weather | 145,174 | Weather |
| 2017-04-24 | North Carolina: Mecklenburg County | SERC | Severe Weather | 74,698 | Weather |
| 2017-04-23 | Oregon: Multnomah County | WECC | Vandalism | 0 | Physical Attack |
| 2017-04-21 | California: San Francisco, City and County of[10] | WECC | System Operations | 88,000 | Operations |
| 2017-04-21 | Kentucky: Bullitt County | SERC | Vandalism | 0 | Physical Attack |
| 2017-04-20 | Wyoming: Converse County | WECC | Vandalism | 0 | Physical Attack |
| 2017-04-17 | Utah: Emery County | WECC | Sabotage | 0 | Physical Attack |
| 2017-04-13 | Washington: Pierce County | WECC | Sabotage | 10,000 | Physical Attack |
| 2017-04-07 | California: Fresno County | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-04-07 | Oregon | WECC | Severe Weather | 64,852 | Weather |
| 2017-04-07 | Oregon: Multnomah County, Washington County, Marion County, Clackamas County | WECC | Severe Weather | 153,867 | Weather |
| 2017-04-06 | California | WECC | Severe Weather | 100,000 | Weather |
| 2017-04-03 | Alabama, Georgia | SERC | Severe Weather | 86,330 | Weather |
| 2017-03-31 | Mississippi: DeSoto County; | SERC | Vandalism | 0 | Physical Attack |
| 2017-03-29 | Texas | TRE | Severe Weather | 175,000 | Weather |
| 2017-03-28 | Oregon: Josephine County; | WECC | Suspicious Activity | 0 | Physical Attack |
| 2017-03-24 | Oregon: Clatsop County; | WECC | Sabotage | 0 | Physical Attack |
| 2017-03-21 | Georgia | SERC | Severe Weather | 257,000 | Weather |
| 2017-03-14 | Connecticut: Massachusetts: Rhode Island: New Hampshire: Maine: Vermont: | NPCC | Severe Weather | 69,647 | Weather |
| 2017-03-12 | California: Imperial County; | WECC | Vandalism | 1 | Physical Attack |
| 2017-03-08 | New York | NPCC | Severe Weather | 50,000 | Weather |
| 2017-03-08 | Ohio | RFC | Severe Weather | 71,012 | Weather |
| 2017-03-08 | New York | NPCC | Severe Weather/Transmission Interruption | 106,869 | Weather |
| 2017-03-08 | Michigan: Jackson County, Calhoun County, Ingham County, Hillsdale County, Washtenaw County, Kent County, Ottawa County, Midland County, Saginaw County; | RFC | Severe Weather | 343,000 | Weather |
| 2017-03-08 | Michigan | RFC | Severe Weather | 800,000 | Weather |
| 2017-03-06 | Missouri: Jackson County, Platte County, Cass County, Lafayette County, Chariton County, Carroll County, Clay County, Johnson County; | SERC | Severe Weather | 97,734 | Weather |
| 2017-03-02 | Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: | NPCC | Severe Weather | 54,316 | Weather |
| 2017-03-01 | Tennessee: Kentucky: | SERC | Severe Weather | 58,000 | Weather |
| 2017-03-01 | Kentucky: West Virginia: | RFC | Severe Weather | 98,575 | Weather |
| 2017-02-17 | Missouri: Arkansas: Oklahoma: Texas: | SPP | System Operations | 0 | Cyber Attack |
| 2017-02-17 | Nevada: Clark County; | WECC | Vandalism | 0 | Physical Attack |
| 2017-02-17 | California: Los Angeles County; | WECC | Severe Weather | 111,591 | Weather |
| 2017-02-17 | California | WECC | Severe Weather | 169,250 | Weather |
| 2017-02-13 | North Carolina: Union County; | SERC | Vandalism | 0 | Physical Attack |
| 2017-02-11 | Utah | WECC | Actual Physical Attack | 0 | Physical Attack |
| 2017-02-09 | Connecticut: Massachusetts: Rhode Island: | NPCC | Severe Weather | 11,525 | Weather |
| 2017-02-06 | Washington: Skagit County, King County, Kitsap County; | WECC | Severe Weather | 103,000 | Weather |
| 2017-02-02 | New Mexico: Bernalillo County, Santa Fe County; | WECC | Transmission Interruption | 149,223 | Transmission Interruption |
| 2017-02-02 | New Mexico: Bernalillo County; | WECC | Transmission Interruption | Unknown | Transmission Interruption |
| 2017-01-22 | California | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-01-22 | Alabama: Georgia: Mississippi: Florida: | SERC | Severe Weather | 29,965 | Weather |
| 2017-01-22 | California | WECC | Severe Weather | 64,000 | Weather |
| 2017-01-18 | California | WECC | Severe Weather | 75,000 | Weather |
| 2017-01-15 | California: Los Angeles County; | WECC | Transmission Disruption | 126,000 | Transmission Interruption |
| 2017-01-15 | Oklahoma: Harper County; | SPP | Severe Weather | 788 | Weather |
| 2017-01-10 | California | WECC | Severe Weather | 87,000 | Weather |
| 2017-01-08 | California | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2017-01-08 | California | WECC | Severe Weather | 106,000 | Weather |
| 2017-01-05 | Florida: Martin County; | FRCC | Suspected Physical Attack | 0 | Physical Attack |
| 2016-12-30 | Vermont: Chittenden County; | NPCC | Other | 0 | Cyber Attack |
| 2016-12-30 | Maine: | NPCC | Weather or Natural Disaster | 85,263 | Weather |
| 2016-12-28 | California: | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2016-12-26 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2016-12-16 | Oregon: Multnomah County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-12-15 | California: Merced County; | WECC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2016-12-13 | California: Riverside County; | WECC | Cyber Event | 0 | Cyber Attack |
| 2016-12-11 | Utah: Utah County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-12-08 | Oregon: Multnomah County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-11-09 | California: Stanislaus County, San Joaquin County, Alameda County, Tuolumne County; | WECC | Cyber Attack | 0 | Cyber Attack |
| 2016-11-09 | California: | WECC | Vandalism | 0 | Physical Attack |
| 2016-11-01 | Washington: Clark County; | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2016-10-31 | North Carolina: Stokes County; | SERC | Actual Physical Event | 0 | Physical Attack |
| 2016-10-28 | California: Plumas County; | WECC | Islanding | 482 | Islanding |
| 2016-10-26 | Wyoming: Sweetwater County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-10-25 | Tennessee: Shelby County; | SERC | Vandalism | 0 | Physical Attack |
| 2016-10-20 | Oregon: | WECC | Vandalism | 0 | Physical Attack |
| 2016-10-18 | Oregon: Deschutes County, Lake County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-10-12 | Nevada: Clark County; | WECC | Vandalism | 1,671 | Physical Attack |
| 2016-10-10 | Texas: | TRE | Generation Inadequacy | Unknown | Generation Interruption |
| 2016-10-08 | North Carolina: | SERC | Severe Weather | 44,875 | Weather |
| 2016-10-08 | South Carolina: | SERC | Severe Weather | 290,824 | Weather |
| 2016-10-08 | North Carolina: South Carolina: | SERC | Severe Weather | Unknown | Weather |
| 2016-10-07 | Texas: | TRE | Generation Inadequacy | Unknown | Generation Interruption |
| 2016-10-07 | Georgia: | SERC | Severe Weather | 36,384 | Weather |
| 2016-10-07 | Florida: Alachua County, Bay County, Citrus County, Columbia County, Dixie County, Franklin County, Gilchrist County, Gulf County, Hamilton County, Hardee County, Hernando County, Highlands County, Jefferson County, Lafayette County, Lake County, Levy County, Madison County, Marion County, Orange County, Osceola County, Pasco County, Pinellas County, Polk County, Seminole County, Sumter County, Suwannee County, Taylor County, Volusia County, Wakulla County; | FRCC | Severe Weather | 165,000 | Weather |
| 2016-10-07 | Florida: | FRCC | Severe Weather | Unknown | Weather |
| 2016-10-07 | South Carolina: Allendale County, Bamberg County, Beaufort County, Berkeley County, Charleston County, Chesterfield County, Clarendon County, Colleton County, Darlington County, Dorchester County, Florence County, Georgetown County, Hampton County, Horry County, Jasper County, Kershaw County, Lee County, Marion County, Marlboro County, Orangeburg County, Richland County, Sumter County, Williamsburg County; | SERC | Severe Weather | Unknown | Weather |
| 2016-10-06 | Texas: | TRE | Public Appeal | Unknown | Public Appeal |
| 2016-10-06 | Florida: | FRCC | Severe Weather | 1,200,000 | Weather |
| 2016-10-05 | California: Imperial County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-10-05 | Texas: | TRE | Public Appeal | Unknown | Public Appeal |
| 2016-10-03 | Texas: | TRE | Public Appeal | Unknown | Public Appeal |
| 2016-10-02 | Utah: | WECC | Transmission Interruption | 4,000 | Transmission Interruption |
| 2016-10-01 | California: Mendocino County; | WECC | Actual Physical Event | 0 | Physical Attack |
| 2016-09-25 | Utah: Kane County, Garfield County; Arizona: Coconino County, Mohave County | WECC | Vandalism | 10,000 | Physical Attack |
| 2016-09-22 | Iowa: Black Hawk County; | MRO | System Operations | 19,124 | Operations |
| 2016-09-21 | Puerto Rico: | System Operations | 1,475,000 | Operations | |
| 2016-09-21 | Texas: Lubbock County; | TRE | Actual Physical Event | 0 | Physical Attack |
| 2016-09-12 | New Mexico: Bernalillo County, Sandoval County, Santa Fe County, Valencia County; | WECC | Generation Inadequacy | 53,753 | Generation Interruption |
| 2016-09-11 | Connecticut: Massachusetts: New Hampshire: Rhode Island: Vermont: Maine: | NPCC | Severe Weather | 57,960 | Weather |
| 2016-09-10 | Washington: Clark County; | WECC | Generation Inadequacy | Unknown | Generation Interruption |
| 2016-09-08 | New York: Tompkins County; | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2016-09-08 | Washington: | WECC | Islanding | 0 | Islanding |
| 2016-09-06 | Washington: Clark County; | WECC | Islanding | Unknown | Islanding |
| 2016-09-02 | Georgia: | SERC | Severe Weather | 57,000 | Weather |
| 2016-09-02 | Florida: Leon County, Wakulla County; | FRCC | Severe Weather | 75,000 | Weather |
| 2016-09-02 | Florida: Alachua County, Bay County, Citrus County, Columbia County, Dixie County, Franklin County, Gilchrist County, Gulf County, Hamilton County, Hardee County, Hernando County, Highlands County, Jefferson County, Lafayette County, Lake County, Levy County, Madison County, Marion County, Orange County, Osceola County, Pasco County, Pinellas County, Polk County, Seminole County, Sumter County, Suwannee County, Taylor County, Volusia County, Wakulla County; | FRCC | Severe Weather | 90,000 | Weather |
| 2016-09-01 | Florida: | FRCC | Severe Weather | Unknown | Weather |
| 2016-08-31 | Washington: Clark County; | WECC | Islanding | 0 | Islanding |
| 2016-08-31 | Colorado: | WECC | Transmission Interruption | 0 | Transmission Interruption |
| 2016-08-25 | Oregon: Crook County; | WECC | Vandalism | 0 | Physical Attack |
| 2016-08-24 | Washington: King County; | WECC | Islanding | Unknown | Islanding |
| 2016-08-24 | Puerto Rico: | PR | System Operations | 400,000 | Operations |
| 2016-08-23 | Texas: Harris County; | TRE | Severe Weather | 72,200 | Weather |
| 2016-08-20 | New York: | NPCC | Actual Physical Event | 40,000 | Physical Attack |
| 2016-08-13 | South Carolina: | SERC | System Operations | 0 | Operations |
| 2016-08-11 | Ohio: | RFC | Severe Weather | 62,140 | Weather |
| 2016-08-10 | California: Butte County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2016-08-07 | New Mexico: Bernalillo County; | WECC | System Operations | Unknown | Operations |
| 2016-08-04 | Delaware: New Castle County; | RFC | Vandalism | 0 | Physical Attack |
| 2016-07-29 | Puerto Rico | PR | System Operations | 0 | Operations |
| 2016-07-28 | Puerto Rico | PR | System Operations | 21,600 | Operations |
| 2016-07-27 | Puerto Rico | PR | System Operations | 106,300 | Operations |
| 2016-07-26 | Puerto Rico | PR | System Operations | 37,100 | Operations |
| 2016-07-25 | Puerto Rico | PR | System Operations | 0 | Operations |
| 2016-07-23 | Pennsylvania: Cambria County | RFC | System Operations | Unknown | Operations |
| 2016-07-23 | Connecticut: Massachusetts: New Hampshire: Vermont: Rhode Island | NPCC | Severe Weather | 101,073 | Weather |
| 2016-07-22 | Massachusetts: Connecticut: Rhode Island: New Hampshire: Vermont: Maine | NPCC | Severe Weather | 57,058 | Weather |
| 2016-07-21 | Puerto Rico | PR | System Operations | 266,000 | Load Shed |
| 2016-07-21 | Delaware: New Castle County | RFC | Suspicious Activity | 0 | Physical Attack |
| 2016-07-19 | Idaho | WECC | System Operations | Unknown | Operations |
| 2016-07-19 | Idaho | WECC | System Operations | Unknown | Operations |
| 2016-07-14 | Oklahoma: Arkansas | SPP | Severe Weather | 7,300 | Weather |
| 2016-07-14 | Oklahoma | SPP | Severe Weather | 96,966 | Weather |
| 2016-07-14 | Arkansas: Louisiana: Mississippi: Texas | SPP, SERC, TRE | Severe Weather | 170,244 | Weather |
| 2016-07-13 | Washington | WECC | Vandalism | 0 | Physical Attack |
| 2016-07-13 | Tennessee: Shelby County | SERC | System Operations | Unknown | Public Appeal |
| 2016-07-12 | Puerto Rico | PR | System Operations | 218,000 | Operations |
| 2016-07-09 | Texas: Dallas County | TRE | Severe Weather | 62,000 | Weather |
| 2016-07-08 | West Virginia: Virginia | RFC | Severe Weather | 62,961 | Weather |
| 2016-07-08 | Michigan: Wayne County, Oakland County, Macomb County, St. Clair County, Lapeer County, Tuscola County, Sanilac County, Huron County | RFC | Severe Weather | 160,895 | Weather |
| 2016-07-08 | North Carolina | SERC | Severe Weather | 203,345 | Weather |
| 2016-07-07 | North Carolina: New Hanover County | SERC | Vandalism | 0 | Physical Attack |
| 2016-07-07 | Kansas: Johnson County; Missouri: Jackson County, Platte County, Cass County, Buchanan County, Atchison County, Andrew County, Clay County, Nodaway County | SERC | Severe Weather | 58,500 | Weather |
| 2016-07-05 | Texas: Dallas County, Tarrant County | TRE | Severe Weather | 52,000 | Weather |
| 2016-07-05 | Minnesota, Wisconsin | MRO | Severe Weather | 250,000 | Weather |
| 2016-07-02 | Oregon: Multnomah County | WECC | Actual Physical Event | 0 | Physical Attack |
| 2016-06-17 | Delaware | RFC | Vandalism | 0 | Physical Attack |
| 2016-06-17 | Georgia, Alabama, Mississippi, Florida | SERC | Weather | 91,260 | Weather |
| 2016-06-14 | New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2016-06-07 | Utah | WECC | Sabotage | 0 | Physical Attack |
| 2016-05-31 | New York: Tompkins County; | NPCC | Fuel Supply Deficiency | Unknown | Fuel Supply Deficiency |
| 2016-05-26 | New York: | NPCC | Transmission Interruption | 56,645 | Transmission Interruption |
| 2016-05-24 | Missouri: | SERC | Vandalism | 0 | Physical Attack |
| 2016-05-20 | Louisiana: | SERC | Distribution Interruption | 85,000 | Distribution Interruption |
| 2016-05-20 | Louisiana: | SERC | Weather | 57,184 | Weather |
| 2016-05-19 | Utah: | WECC | System Operations | 85,179 | Operations |
| 2016-05-14 | Missouri: | SERC | Sabotage | 0 | Physical Attack |
| 2016-05-10 | Texas: Dallas County, Tarrant County, Parker County; | TRE | Distribution Interruption | 85,000 | Distribution Interruption |
| 2016-05-08 | Washington: Clark County; | WECC | Islanding | Unknown | Islanding |
| 2016-05-07 | New York: Dutchess County; | NPCC | Sabotage | 0 | Physical Attack |
| 2016-04-27 | Tennessee | SERC | Vandalism | 0 | Physical Attack |
| 2016-04-27 | Texas: Rusk County | TRE | Sabotage | 0 | Physical Attack |
| 2016-04-27 | Texas: Harris County | TRE | Weather | 214,864 | Weather |
| 2016-04-18 | Texas: Harris County | TRE | Weather | 415,103 | Weather |
| 2016-04-15 | Utah: Weber County | WECC | Vandalism | 0 | Physical Attack |
| 2016-04-14 | Maryland: Baltimore County | RFC | Sabotage | 0 | Physical Attack |
| 2016-04-12 | Washington: Pend Oreille County | WECC | Cyber Attack | 0 | Cyber Attack |
| 2016-04-02 | California | WECC | System Operations | 0 | Operations |
| 2016-04-01 | Florida: Hillsborough County | FRCC | Sabotage | 0 | Physical Attack |
| 2016-03-30 | Massachusetts: Middlesex County[13]; | NPCC | Sabotage | 50,500 | Physical Attack |
| 2016-03-27 | Nevada: Clark County; | WECC | Sabotage | 110,000 | Physical Attack |
| 2016-03-23 | Colorado: Denver, City and County of[12]; | WECC | Weather | 0 | Weather |
| 2016-03-13 | Washington: Island County, Skagit County, Whatcom County, King County, Kitsap County, Pierce County, Thurston County; | WECC | Sabotage | 0 | Physical Attack |
| 2016-03-13 | Washington: | WECC | Vandalism | 0 | Physical Attack |
| 2016-03-10 | Washington: Kitsap County, King County, Whatcom County, Island County, Skagit County; | WECC | Sabotage | 0 | Physical Attack |
| 2016-03-08 | Idaho: Bannock County; | WECC | Sabotage | 0 | physical Attack |
| 2016-03-03 | California: San Bernardino County; | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2016-03-01 | Idaho: Ada County; | WECC | Vandalism | 0 | physical Attack |
| 2016-03-01 | Washington: King County, Whatcom County, Kitsap County, Skagit County; | WECC | Weather | 56,000 | Weather |
| 2016-02-26 | California: San Bernardino County | WECC | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2016-02-26 | Arizona: Maricopa County | WECC | Sabotage - Operator Action(s) | 2,713 | physical Attack |
| 2016-02-25 | Connecticut: Maine: Massachusetts: Rhode Island: Vermont: | NPCC | Weather | 114,190 | Weather |
| 2016-02-24 | Delaware | RFC | Vandalism | 0 | physical Attack |
| 2016-02-24 | North Carolina: South Carolina | SERC | Weather | 284,610 | Weather |
| 2016-02-21 | Oregon: Klamath County | WECC | Sabotage | 0 | Physical Attack |
| 2016-02-19 | Michigan | RFC | Weather | 145,314 | Weather |
| 2016-02-16 | Virginia: Roanoke County, Montgomery County; West Virginia: Kanawha County, Cabell County; Tennessee: Sullivan County; | RFC | Weather | 52,640 | Weather |
| 2016-02-13 | California | SERC | Islanding | 4,300 | Islanding |
| 2016-02-07 | New York: Orange County | NPCC | Cyber Attack | Unknown | Cyber Attack |
| 2016-02-07 | Utah: Salt Lake County | WECC | Vandalism | 0 | Physical Attack |
| 2016-02-07 | Oregon: Klamath County | WECC | Sabotage | Unknown | Physical Attack |
| 2016-02-05 | Connecticut: Massachusetts: Rhode Island: | NPCC | Weather | 115,057 | Weather |
| 2016-01-23 | New Jersey: | RFC | Weather | 50,900 | Weather |
| 2016-01-22 | North Carolina: South Carolina: | SERC | Weather | 150,000 | Weather |
| 2016-01-17 | Utah: Salt Lake County; | WECC | Sabotage | 0 | Physical Attack |
| 2016-01-14 | Delaware: | RFC | Vandalism | 0 | Physical Attack |
| 2016-01-11 | Pennsylvania: Chester County; | RFC | Vandalism | 0 | Physical Attack |
| 2016-01-10 | Maine: Connecticut: Massachusetts: Vermont: New Hampshire: Rhode Island: | NPCC | Weather | 59,859 | Weather |
| 2016-01-04 | Wisconsin: Milwaukee County; | MRO | Sabotage | 0 | Physical Attack |
| 2015-12-31 | Missouri | SERC | Sabotage | 0 | Physical Attack |
| 2015-12-31 | Oklahoma: Blaine County; | SPP | Severe Weather | 1,500 | Weather |
| 2015-12-29 | Maine | NPCC | Sabotage | 0 | Physical Attack |
| 2015-12-27 | Oklahoma | SPP | Severe Weather | 50,500 | Weather |
| 2015-12-27 | Oklahoma | SPP | Severe Weather | 54,476 | Weather |
| 2015-12-26 | Texas | TRE | Severe Weather | 70,000 | Weather |
| 2015-12-26 | Texas: Oklahoma: | SPP | Severe Weather | 116,800 | Weather |
| 2015-12-24 | Michigan: Antrim County, Charlevoix County, Manistee County, Mecosta County, Kalkaska County, Grand Traverse County, Osceola County, Lake County, Newaygo County, Clare County, Isabella County; | RFC | Severe Weather | 168,000 | Weather |
| 2015-12-10 | California: Plumas County | WECC | Severe Weather | 9,956 | Islanding |
| 2015-12-10 | Missouri: New Madrid County; | SERC | System Operations | 1 | Operations |
| 2015-12-10 | California: Stanislaus County; | WECC | Vandalism | Unknown | Physical Attack |
| 2015-12-10 | California: Northern; | WECC | Severe Weather | 9,956 | Weather |
| 2015-12-09 | Puerto Rico | System Operations | 0 | Operations | |
| 2015-12-09 | Washington | WECC | Severe Weather | 76,300 | Weather |
| 2015-12-08 | Nevada: Clark County; | WECC | Sabotage | 0 | Physical Attack |
| 2015-12-05 | New York: Orange County, Sullivan County; Pennsylvania: Pike County; | NPCC | Other | 52,476 | Operations |
| 2015-12-05 | Kansas | SPP | Vandalism | 0 | Physical Attack |
| 2015-12-02 | Kansas: Thomas County; | SPP | Vandalism | 0 | Physical Attack |
| 2015-11-30 | Puerto Rico | N/A | System Operations | 86,559 | Operations |
| 2015-11-29 | Puerto Rico | N/A | System Operations | 0 | Operations |
| 2015-11-28 | Oklahoma | SPP | Severe Weather | 35,000 | Weather |
| 2015-11-28 | Oklahoma | SPP | Severe Weather | 55,609 | Weather |
| 2015-11-21 | Michigan | RFC | Severe Weather | 60,000 | Weather |
| 2015-11-17 | Washington: Snohomish County; | WECC | Severe Weather | 89,000 | Weather |
| 2015-11-17 | Washington: Stevens County, Lincoln County, Adams County, Whitman County, Spokane County; Idaho: Bonner County, Kootenai County, Shoshone County, Benewah County, Idaho County; | WECC | Severe Weather | 182,000 | Weather |
| 2015-11-17 | Washington | WECC | Severe Weather | 300,000 | Weather |
| 2015-11-13 | New York | NPCC | Suspicious Activity | Unknown | physical Attack |
| 2015-11-10 | Indiana: Dearborn County; | RFC | Sabotage | 0 | physical Attack |
| 2015-11-02 | Arkansas: Hot Spring County; | SERC | Sabotage | 0 | physical Attack |
| 2015-11-01 | Ohio: Hamilton County; | RFC | Vandalism | 0 | physical Attack |
| 2015-10-31 | Texas: Harris County; | TRE | Severe Weather | 130,252 | Weather |
| 2015-10-30 | Oregon: Josephine County; | WECC | Other | 0 | physical Attack |
| 2015-10-28 | Pennsylvania: Columbia County; Montour County; Northumberland County; | RFC | Other | 35,000 | physical Attack |
| 2015-10-23 | Puerto Rico | N/A | System Operations | 300,000 | Islanding |
| 2015-10-18 | California: Central Coast area; | WECC | Severe Weather | 55,677 | Weather |
| 2015-10-16 | Utah | WECC | Vandalism | 0 | Physical Attack |
| 2015-10-13 | Utah: Emery County; | WECC | Vandalism | 0 | Physical Attack |
| 2015-10-13 | Texas | TRE | Other | Unknown | Public Appeal |
| 2015-10-13 | California | WECC | Other | Unknown | Public Appeal |
| 2015-09-29 | Oregon | WECC | Vandalism | Unknown | Physical Attack |
| 2015-09-20 | California | WECC | System Operations | Unknown | Load Shed |
| 2015-09-13 | New York: Dutchess County; | NPCC | Vandalism | 0 | Physical Attack |
| 2015-09-03 | Michigan | RFC | Severe Weather | 50,114 | Weather |
| 2015-08-29 | Washington: King County; | WECC | Severe Weather | 64,000 | Weather |
| 2015-08-29 | King County, Skagit County, Whatcom County, Kitsap County, Pierce County, Thurston County, Island County, Washington | WECC | Severe Weather | 250,000 | Weather |
| 2015-08-29 | Washington | WECC | Severe Weather | 500,000 | Weather |
| 2015-08-27 | Puerto Rico | WECC | System Operations | Unknown | Operations |
| 2015-08-13 | Texas: Williamson County; | TRE | Other | Unknown | Public Appeal |
| 2015-08-11 | Texas: Houston; | TRE | Severe Weather | 100,000 | Weather |
| 2015-08-04 | Massachusetts: Rhode Island: | NPCC | Severe Weather | 132,000 | Weather |
| 2015-08-03 | Arizona: New Mexico | WECC | Sabotage | Unknown | Physical Attack |
| 2015-08-03 | Michigan | RFC | Severe Weather | 72,520 | Weather |
| 2015-08-03 | Illinois | RFC | Severe Weather | 115,000 | Weather |
| 2015-08-02 | Michigan: Emmet County; Grand Traverse County; Leelanau County; Kalkaska County; Benzie County; Manistee County; Wexford County; Missaukee County; Mecosta County; | RFC | Severe Weather | 162,000 | Weather |
| 2015-07-31 | Washington | WECC | System Operations | 0 | Islanding |
| 2015-07-30 | Tennessee | SERC | Vandalism | 0 | Physical Attack |
| 2015-07-30 | Texas | TRE | System Operations | Unknown | Public Appeal |
| 2015-07-29 | New York | NPCC | System Operations | 0 | Fuel Supply Deficiency |
| 2015-07-28 | Puerto Rico | N/A | System Operations | Unknown | Operations |
| 2015-07-27 | California | WECC | System Operations | 484 | Islanding |
| 2015-07-21 | Washington | WECC | System Operations | Unknown | Load Shed |
| 2015-07-18 | California | WECC | System Operations | 70 | Islanding |
| 2015-07-18 | California | WECC | Severe Weather | 78,164 | Weather |
| 2015-07-18 | Henepin and Ramsey County, Minnesota | MRO | Severe Weather | 250,000 | Weather |
| 2015-07-16 | Texas | SPP | System Operations | 17,311 | Load Shed |
| 2015-07-15 | California | WECC | System Operations | 0 | Operations |
| 2015-07-14 | Alabama | SERC | Severe Weather | 111,644 | Weather |
| 2015-07-14 | Arkansas | SPP | Severe Weather | Unknown | Weather |
| 2015-07-13 | Virginia | RFC | Severe Weather | 52,739 | Weather |
| 2015-07-13 | Ohio, Kentucky | RFC | Severe Weather | 68,339 | Weather |
| 2015-07-03 | Texas | TRE | System Operations | 30,000 | Operations |
| 2015-07-03 | Butte County, California | WECC | Suspicious Activity | 0 | physical Attack |
| 2015-06-30 | California | WECC | Severe Weather | Unknown | Weather |
| 2015-06-30 | California | WECC | Severe Weather | Unknown | Weather |
| 2015-06-29 | Washington | WECC | Severe Weather | 0 | Weather |
| 2015-06-27 | Wayne County, Michigan | RFC | Severe Weather | 68,000 | Weather |
| 2015-06-26 | Kansas | SPP | Severe Weather | 110,000 | Weather |
| 2015-06-23 | New Jersey | RFC | System Operations | 156,338 | Load Shed |
| 2015-06-23 | Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont | NPCC | Severe Weather | 62,442 | Weather |
| 2015-06-23 | New Castle County, Delaware | RFC | Severe Weather | 65,000 | Weather |
| 2015-06-23 | New Jersey | NPCC | Severe Weather | 73,000 | Weather |
| 2015-06-23 | Delaware County, PA; Chester County, PA | RFC | Severe Weather | 200,000 | Weather |
| 2015-06-23 | Gloucester County, Burlington County, Atlantic County, Cape May County, New Jersey | RFC | Severe Weather | 263,000 | Weather |
| 2015-06-20 | Solano County, California | WECC | Vandalism | 0 | Physical Attack |
| 2015-06-08 | Merced County, California | WECC | System Operations | Unknown | Fuel Supply Deficiency |
| 2015-06-07 | Tennessee | SERC | System Operations | Unknown | Operations |
| 2015-06-07 | Shelby County, Tennessee | SERC | System Operations | Unknown | Operations |
| 2015-06-03 | Texas | TRE | System Operations | Unknown | Public Appeal |
| 2015-06-02 | California | WECC | System Operations | 727 | Islanding |
| 2015-06-01 | California | WECC | System Operations | 484 | Islanding |
| 2015-06-01 | Daviess County, Kentucky | SERC | Vandalism | 110 | Physical Attack |
| 2015-05-26 | Texas, Louisiana, Arkansas, Mississippi | SERC | Severe Weather | 78,515 | Weather |
| 2015-05-25 | Texas, Louisiana, Arkansas | SPP | Severe Weather | 57,351 | Weather |
| 2015-05-25 | Texas | SPP | Severe Weather | 57,531 | Weather |
| 2015-05-25 | Fort Bend County, & Harris County ,Texas | TRE | Severe Weather | 61,000 | Weather |
| 2015-05-25 | North Texas | TRE | Severe Weather | 454,000 | Weather |
| 2015-05-18 | Washington | WECC | Severe Weather | 0 | Weather |
| 2015-05-12 | Coahoma County, Mississippi | SERC | Sabotage | 0 | Physical Attack |
| 2015-05-11 | Shasta County, California | WECC | Sabotage | 0 | Physical Attack |
| 2015-05-04 | Salt Lake County, Utah | WECC | Vandalism | Unknown | Physical Attack |
| 2015-05-02 | Franklin County, Tennessee | SERC | Vandalism | 215 | Physical Attack |
| 2015-04-27 | Louisiana and Texas | SERC | Severe Weather | 199,000 | Weather |
| 2015-04-24 | Dallas, Fort Worth, Texas | TRE | Severe Weather | 57,000 | Weather |
| 2015-04-18 | Dallas, Fort Worth, Texas | TRE | Severe Weather | 89,000 | Weather |
| 2015-04-17 | Canada | WECC | System Operations | Unknown | Islanding |
| 2015-04-17 | Houston, Texas | TRE | Severe Weather | 280,982 | Weather |
| 2015-04-07 | California | WECC | System Operations | 0 | Islanding |
| 2015-04-07 | Unknown | RFC | System Operations | Unknown | Operations |
| 2015-04-06 | Butte County, California | WECC | System Operations | 80,000 | Operations |
| 2015-04-03 | Harvey, Reno, and Sedgwick Counties, Kansas | SPP | Severe Weather - Thunderstorms | 70,000 | Weather |
| 2015-04-02 | San Juan County, Utah | WECC | Vandalism | 5,763 | Physical Attack |
| 2015-04-01 | San Juan County, Utah | WECC | Vandalism | 37 | Physical Attack |
| 2015-03-29 | California | WECC | Vandalism | Unknown | Physical Attack |
| 2015-03-26 | Contra Costa County, California | WECC | System Operations | Unknown | Islanding |
| 2015-03-22 | West Virginia | RFC | Vandalism | 0 | Physical Attack |
| 2015-03-19 | Southwest Kansas | SPP | Vandalism | Unknown | Physical Attack |
| 2015-03-16 | Winona , Minnesota | MRO | Sabotage | 5,941 | Physical Attack |
| 2015-03-15 | Greater Portland & Salem , Oregon | WECC | Severe Weather - Wind | 71,000 | Weather |
| 2015-03-09 | Washington | WECC | Vandalism | Unknown | Physical Attack |
| 2015-03-04 | Johnson City , Tennessee | SERC | Vandalism | Unknown | Physical Attack |
| 2015-02-26 | North Carolina | SERC | Severe Weather - Winter | 103,776 | Weather |
| 2015-02-26 | North Carolina, South Carolina | SERC | Severe Weather - Winter | 124,000 | Weather |
| 2015-02-21 | Fentress County, Tennessee | SERC | Severe Weather - Winter | 50,000 | Weather |
| 2015-02-20 | North Carolina, South Carolina | SERC | Severe Weather - Winter | Unknown | Weather |
| 2015-02-19 | Winslow, Arizona | WECC | Vandalism | Unknown | Physical Attack |
| 2015-02-18 | Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri | SERC | Severe Weather - Winter | Unknown | Weather |
| 2015-02-17 | Prescott Valley, Arizona | WECC | Vandalism | Unknown | Physical Attack |
| 2015-02-17 | North Carolina, South Carolina | SERC | Severe Weather - Winter | 52,000 | Weather |
| 2015-02-17 | North Carolina, South Carolina | SERC | Severe Weather - Winter | 68,000 | Weather |
| 2015-02-16 | Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri | SERC | Severe Weather - Winter | 67,189 | Weather |
| 2015-02-16 | Northern/North Eastern, Georgia | SERC | Severe Weather - Winter | 186,035 | Weather |
| 2015-02-09 | Colorado Springs, Colorado | WECC | Sabotage | Unknown | Physical Attack |
| 2015-02-06 | Northern California | WECC | Severe Weather - Wind | 65,000 | Weather |
| 2015-02-05 | Cameron, Arizona | WECC | Vandalism | Unknown | Physical Attack |
| 2015-02-05 | Dunismuir, California | WECC | Vandalism | Unknown | Physical Attack |
| 2015-02-04 | Vollmers, California | WECC | Vandalism | Unknown | Physical Attack |
| 2015-02-02 | Conroe, Texas | TRE | Sabotage | Unknown | Physical Attack |
| 2015-02-01 | Weber County, Utah | WECC | Vandalism | Unknown | Physical Attack |
| 2015-01-27 | Kountze, Texas | SERC | Sabotage | 0 | Physical Attack |
| 2015-01-26 | Cave Junction, Oregon | WECC | Vandalism | Unknown | Physical Attack |
| 2015-01-22 | Portland, Oregon | WECC | Vandalism | Unknown | Physical Attack |
| 2015-01-07 | Tennessee | SERC | Severe Weather - Winter | Unknown | Weather |
| 2015-01-07 | Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri | SERC | Severe Weather - Winter | Unknown | Weather |
| 2014-12-30 | New Hampshire, Massachusetts, Maine, Rhode Island, Connecticut, Vermont | NPCC | Suspected Cyber Attack | Unknown | Cyber Attack |
| 2014-12-30 | Northern California | WECC | Severe Weather- High Winds | 84,500 | Weather |
| 2014-12-17 | Washington | WECC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-12-11 | San Francisco, California | WECC | Distribution Interruption - Unknown Cause | 75,000 | Distribution Interruption |
| 2014-12-11 | Portland, Oregon | WECC | Severe Weather- High Winds | 85,470 | Weather |
| 2014-12-11 | Kitsap, Thurston, Whatcom counties Washington | WECC | Severe Weather- High Winds | 264,000 | Weather |
| 2014-12-11 | Northern California | WECC | Severe Weather- High Winds | Unknown | Weather |
| 2014-12-11 | Northern California | WECC | Severe Weather- High Winds | Unknown | Weather |
| 2014-12-03 | Maine | NPCC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-12-01 | Fayetteville, North Carolina | SERC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-26 | New Hampshire, Massachusetts, Maine, Rhode Island, Connecticut, Vermont | NPCC | Severe Weather - Winter Storm | 79,530 | Weather |
| 2014-11-24 | Nebraska, Kansas, Texas, Arkansas, Louisiana, New Mexico | SPP | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-11-24 | Michigan | RFC | Severe Weather - Wind | 186,154 | Weather |
| 2014-11-21 | Sand Springs - Fort Rock, Oregon | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-21 | Twin Falls, Idaho | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-19 | Victorville, California | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-14 | Estacada, Oregon | WECC | Electrical System Islanding | 123 | Islanding |
| 2014-11-13 | Howard County,Texas | MRO | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-12 | Unknown | SERC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-11-11 | Washington | WECC | Severe Weather - Wind | 68,000 | Weather |
| 2014-11-02 | Massachusetts, Maine, Vermont, New Hampshire, Rhode Island, Connecticut | NPCC | Severe Weather - Winter Storm | 63,719 | Weather |
| 2014-11-01 | Portland, Oregon | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-25 | Greater Portland and Salem, Oregon | WECC | Severe Weather - Wind | 78,000 | Weather |
| 2014-10-25 | King County, Thurston County and Kitsap County, Washington | WECC | Severe Weather - Wind | 96,000 | Weather |
| 2014-10-24 | Howard County, Texas | MRO | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-24 | Enfield, Connecticut | NPCC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-22 | New Hampshire, Maine, Massachusetts, Rhode Island, Connecticut, Vermont | NPCC | Severe Weather | 66,650 | Weather |
| 2014-10-21 | Carmel, Indiana | MRO | Suspected Cyber Attack | Unknown | Cyber Attack |
| 2014-10-20 | Howard County, Texas | MRO | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-16 | Garden City, Kansas | MRO | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-16 | Manitoba | MRO | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-10-15 | Oregon | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-14 | Puerto Rico | N/A | Voltage Reduction | Unknown | ? |
| 2014-10-14 | Oregon | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-14 | Alabama, Florida, Georgia | SERC | Severe Weather - Thunderstorms | 57,475 | Weather |
| 2014-10-13 | Louisiana | SERC | Severe Weather - Thunderstorms | 68,600 | Weather |
| 2014-10-09 | Rio Grande Valley Texas | TRE | Public Appeal to Reduce Electricity Usage | 2,800 | Public Appeal |
| 2014-10-08 | Rio Grande Valley Texas | TRE | Public Appeal to Reduce Electricity Usage; Load Shed of 100 MW | 120,000 | Public Appeal |
| 2014-10-08 | Rio Grande Valley Texas | TRE | Public Appeal to Reduce Electricity Usage; Load Shed of 100 MW | Unknown | Public Appeal |
| 2014-10-07 | Maryland | RFC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-06 | Houston, Texas | TRE | Severe Weather - Thunderstorms | 129,237 | Weather |
| 2014-10-02 | Cave Junction, Oregon | WECC | Suspected Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-10-02 | Arkansas | SERC | Severe Weather - Thunderstorms | 67,300 | Weather |
| 2014-10-02 | Texas | TRE | Severe Weather - Thunderstorms | 500,000 | Weather |
| 2014-09-24 | Washington | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-09-23 | New York | NPCC | Physical Attack - Suspcious Activity | N/A | Physical Attack |
| 2014-09-22 | Northeast Minnesota | MRO | Fuel Supply Emergency - Coal | 140,000 | Fuel Supply Deficiency |
| 2014-09-21 | New York | NPCC | Physical Attack - Suspcious Activity | Unknown | Physical Attack |
| 2014-09-19 | Estacada, Oregon | WECC | Electrical System Separation (Islanding) | 123 | Islanding |
| 2014-09-17 | Michigan | RFC | Suspected Physical Attack - Suspcious Activity | Unknown | Physical Attack |
| 2014-09-16 | California | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-09-14 | Oregon | WECC | Electrical System Separation (Islanding) | 123 | Islanding |
| 2014-09-11 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-09-09 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-09-05 | Lower Peninsula of Michigan | RFC | Severe Weather - Thunderstorms | 60,000 | Weather |
| 2014-09-05 | Illinois | RFC | Severe Weather - Thunderstorms | 180,400 | Weather |
| 2014-09-05 | Michigan | RFC | Severe Weather - Thunderstorms | 324,000 | Weather |
| 2014-08-30 | Luzerne County, Pennsylvania | RFC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-08-27 | Delaware | RFC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-08-26 | Southeast Michigan | RFC | Severe Weather - Thunderstorms | Unknown | Weather |
| 2014-08-24 | North of San Francisco, California | WECC | Earthquake | 70,000 | Natural Disaster |
| 2014-08-23 | City of Highland, Illinois | RFC | Operational Failure of Electrical System | 6,549 | Operations |
| 2014-08-20 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-08-13 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-08-01 | Utah | WECC | Physical Attack | Unknown | Physical Attack |
| 2014-07-27 | Central California | WECC | Uncontrolled Loss of 300 Megawatts | 1 | ? |
| 2014-07-27 | Southeast Michigan | RFC | Severe Weather - Thunderstorms | 156,611 | Weather |
| 2014-07-24 | California | WECC | Load shedding of 100 Megawatts | 26,856 | Load Shed |
| 2014-07-23 | Arkansas, Louisiana | SERC | Severe Weather - Thunderstorms | 57,299 | Weather |
| 2014-07-14 | Washington | WECC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-07-08 | Maryland | RFC | Severe Weather - Thunderstorms | 56,600 | Weather |
| 2014-07-08 | Upstate New York | NPCC | Severe Weather - Thunderstorms | 65,000 | Weather |
| 2014-07-08 | Central and Northeastern Pennsylvania | RFC | Severe Weather - Thunderstorms | 66,000 | Weather |
| 2014-07-08 | Eastern Pennsylvania | RFC | Severe Weather - Thunderstorms | 69,000 | Weather |
| 2014-07-08 | West Virginia | RFC | Severe Weather - Thunderstorms | 71,000 | Weather |
| 2014-07-08 | Maryland, West Virginia | RFC | Severe Weather - Thunderstorms | 96,000 | Weather |
| 2014-07-08 | Pennsylvania | RFC | Severe Weather - Thunderstorms | 260,000 | Weather |
| 2014-07-03 | Vermont, New Hampshire, Maine, Rhode Island, Massachusetts, Connecticut | NPCC | Severe Weather - Thunderstorms | 64,000 | Weather |
| 2014-07-03 | Pennsylvania | RFC | Severe Weather - Thunderstorms | 298,165 | Weather |
| 2014-07-02 | Wisconsin | MRO | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-07-01 | Southwest Michigan | RFC | Severe Weather - Thunderstorms | 51,000 | Weather |
| 2014-07-01 | Indiana, Michigan | RFC | Severe Weather - Thunderstorms | 57,237 | Weather |
| 2014-07-01 | Southeast Michigan | RFC | Severe Weather - Thunderstorms | 140,000 | Weather |
| 2014-06-30 | Southeast Wisconsin | MRO | Severe Weather - Thunderstorms | 120,000 | Weather |
| 2014-06-30 | North Central Indiana | RFC | Severe Weather - Thunderstorms | 127,000 | Weather |
| 2014-06-30 | Illinois | RFC | Severe Weather - Thunderstorms | 420,000 | Weather |
| 2014-06-27 | Wisconsin | MRO | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-06-24 | Nashville, Tennessee | SERC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-06-19 | Nashville, Tennessee | SERC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-06-18 | Washington | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-06-18 | Southeast Michigan | RFC | Severe Weather - Thunderstorms | 138,802 | Weather |
| 2014-06-15 | Central Minnesota | MRO | Severe Weather - Thunderstorms | 55,951 | Weather |
| 2014-06-12 | Somervell County, Texas | ERCOT | Suspected Physical Attack | Unknown | physical Attack |
| 2014-06-11 | Nogales, Arizona | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2014-06-11 | Southern Mississippi | SERC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-06-10 | West Virginia | RFC | Severe Weather - Thunderstorms | 66,383 | Weather |
| 2014-06-09 | Alberta, Canada | WECC | Electrical System Islanding | Unknown | Islanding |
| 2014-06-07 | North and Central , Alabama | SERC | Severe Weather - Thunderstorms | 65,000 | Weather |
| 2014-06-06 | Texas | ERCOT | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-06-05 | Shelby County, Tennessee | SERC | Severe Weather - Thunderstorms | 38,500 | Weather |
| 2014-06-05 | West Tennessee | SERC | Severe Weather - Thunderstorms | 56,475 | Weather |
| 2014-06-03 | Alberta, Canada | WECC | Electrical System Islanding | N/A | Islanding |
| 2014-06-03 | Texas | ERCOT | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-05-27 | Phoenix, Arizona | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-05-26 | British Columbia & Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-05-23 | North Carolina | SERC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-05-20 | Duchesne County, Utah | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-05-16 | San Diego & Orange Counties, California | WECC | Public Appeal to Reduce Electricity Usage - Wild Fires | 1,400,000 | Wildfire |
| 2014-05-15 | Whiting, Indiana | RFC | Suspected Physical Attack | N/A | Physical Attack |
| 2014-05-15 | San Diego & Orange Counties, California | WECC | Public Appeal to Reduce Electricity Usage - Wild Fires | 1,400,000 | Wildfire |
| 2014-05-14 | San Diego & Orange Counties, California | WECC | Public Appeal to Reduce Electricity Usage - Wild Fires | 426 | Wildfire |
| 2014-05-12 | Layton, Utah | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-05-11 | MISO North, Minnesota | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-05-09 | Indiana | RFC | Severe Weather - Heavy Winds | 56,000 | Weather |
| 2014-05-08 | Mississippi | SERC | Physical Attack | Unknown | Physical Attack |
| 2014-05-08 | Imperial Valley, California | WECC | Physical Attack | Unknown | Physical Attack |
| 2014-04-30 | Alabama, Florida, Georgia | SERC | Severe Weather - Thunderstorms | 89,000 | Weather |
| 2014-04-29 | Northeastern Mississippi, Northern Alabama | SERC | Severe Weather - Thunderstorms | 57,000 | Weather |
| 2014-04-29 | Mississippi, Alabama | SERC | Severe Weather - Thunderstorms | 106,648 | Weather |
| 2014-04-27 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | 4,000,000 | Islanding |
| 2014-04-27 | Albany, Oregon | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-04-25 | Delaware | RFC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-04-24 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-04-23 | Baton Rouge, Louisiana | SERC | Load shedding of 100 Megawatts | 28,000 | Load Shed |
| 2014-04-12 | Western and Central Michigan | RFC | Severe Weather - Thunderstorms | 50,000 | Weather |
| 2014-04-12 | Michigan | RFC | Severe Weather | 164,000 | Weather |
| 2014-04-08 | Puerto Rico | N/A | Voltage Reduction | Unknown | ? |
| 2014-04-08 | Davis, California | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-04-04 | Central Arkansas | SERC | Severe Weather - Wind | 57,200 | Weather |
| 2014-04-03 | Texas | TRE | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-04-03 | Wisconsin | MRO | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-03-31 | Puerto Rico | N/A | System Wide Voltage Reduction | Unknown | ? |
| 2014-03-26 | Montana | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2014-03-26 | Iowa | MRO | Physical Attack | N/A | Physical Attack |
| 2014-03-24 | Salt Lake City, Utah | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-03-20 | New York | NPCC | Suspected Cyber Attack | Unknown | Cyber Attack |
| 2014-03-17 | Glendale, Arizona | WECC | Physical Attack - Sabatoge | N/A | Physical Attack |
| 2014-03-14 | Boone County, Iowa | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-03-12 | North Carolina | SERC | Severe Weather - High Winds | 61,377 | Weather |
| 2014-03-11 | Boone County, Iowa | MRO | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-03-07 | Triad, North Carolina | SERC | Severe Weather - Winter Storm | 370,900 | Weather |
| 2014-03-05 | Salt Lake City, Utah | WECC | Physical Attack | Unknown | physical Attack |
| 2014-03-04 | Weston, Wisconsin | MRO | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-03-03 | Mid-Columbia River Generation, Washington | WECC | Fuel Supply Emergency - Hydro | Unknown | Fuel Supply Deficiency |
| 2014-03-03 | New York | NPCC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-03-03 | Tennessee | SERC | Severe Weather - Winter Storm | 65,904 | Weather |
| 2014-03-02 | ERCOT Region Texas | TRE | Public Appeal due to Severe Weather - Cold | N/A | Islanding |
| 2014-02-21 | Northern/Northeastern Georgia | SERC | Severe Weather - Thunderstorms/High Winds | 66,445 | Weather |
| 2014-02-20 | Missouri, Illinois | SERC | Severe Weather - Snow/Ice | 66,000 | Weather |
| 2014-02-18 | Bend, Oregon | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-02-14 | Portland, Oregon | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-02-12 | Vermont | NPCC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-02-12 | South Carolina | SERC | Severe Weather - Snow/Ice | 120,124 | Weather |
| 2014-02-12 | North Carolina | SERC | Severe Weather - Snow/Ice | 200,000 | Weather |
| 2014-02-12 | Northern/Northeastern Georgia | SERC | Severe Weather - Snow/Ice | 373,835 | Weather |
| 2014-02-07 | Niagara County New York | NPCC | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-02-07 | ERCOT Region Texas | TRE | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2014-02-07 | Texas | TRE | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2014-02-06 | California | WECC | Fuel Supply Emergency - Natural Gas | Unknown | Fuel Supply Deficiency |
| 2014-02-06 | Northern California | WECC | Fuel Supply Emergency - Natural Gas | Unknown | Fuel Supply Deficiency |
| 2014-02-06 | California | WECC | Fuel Supply Emergency - Natural Gas | Unknown | Fuel Supply Deficiency |
| 2014-02-06 | Rio Grande Valley Texas | TRE | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2014-02-06 | ERCOT Region Texas | TRE | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2014-02-05 | New York | NPCC | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-02-05 | Lancaster Region, Pennsylvania | RFC | Severe Weather - Snow/Ice | 62,159 | Weather |
| 2014-02-05 | Maryland, West Virginia | RFC | Severe Weather - Snow/Ice | 101,580 | Weather |
| 2014-02-05 | Pennsylvania | RFC | Severe Weather - Snow/Ice | 144,000 | Weather |
| 2014-02-05 | Baltimore, Maryland | RFC | Severe Weather - Ice | 181,000 | Weather |
| 2014-02-05 | Pennsylvania | RFC | Severe Weather - Snow/Ice | 715,000 | Weather |
| 2014-01-30 | Arizona | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-29 | Unknown | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-27 | Maryland | RFC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-26 | Oregon | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-01-26 | New Jersey | RFC | Physical Attack | Unknown | Physical Attack |
| 2014-01-25 | Madison, Wisconsin | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-24 | Wisconsin | RFC | Fuel Supply Emergency - Coal | Unknown | Fuel Supply Deficiency |
| 2014-01-24 | Wisconsin | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-23 | Wynoochee, Washington | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-23 | Tennessee | SERC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-23 | Maryland | RFC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-23 | Tennessee | SERC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-22 | Wisconsin | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-22 | Ohio | RFC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-22 | Wisconsin | MRO | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-22 | Burlington County, New Jersey | RFC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-01-21 | Missouri | SERC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-21 | New Jersey | RFC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-18 | Unknown | RFC | Electrical System Islanding | Unknown | Islanding |
| 2014-01-18 | Texas | TRE | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2014-01-17 | Illinois | RFC | Fuel Supply Emergency - Natural Gas | Unknown | Fuel Supply Deficiency |
| 2014-01-17 | Ohio | RFC | Suspected Physical Attack | Unknown | Physical Attack |
| 2014-01-16 | Arizona | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-01-15 | Utah | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2014-01-13 | Arizona | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2014-01-08 | South Carolina | SERC | Voltage Reduction; Public Appeal; Load Shed 100+MW due to Severe Weather - Cold | 677,858 | Weather |
| 2014-01-08 | Unknown | RFC | Voltage Reduction due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | Illinois | RFC | Fuel Supply Emergency - Natural Gas | N/A | Fuel Supply Deficiency |
| 2014-01-07 | Piedmont North Carolina, Piedmont South Carolina | SERC | Fuel Supply Emergency due to Severe Weather - Cold | Unknown | Fuel Supply Deficiency |
| 2014-01-07 | South Carolina | SERC | Voltage Reduction; Public Appeal; Load Shed 100+MW due to Severe Weather - Cold | 677,858 | Weather |
| 2014-01-07 | Northeast Tennessee | SERC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | Tennessee | SERC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | Pennsylvania | RFC | Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | North Carolina | SERC | Voltage Reduction; Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | North Carolina | SERC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-07 | Unknown | RFC | Public Appeal due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-06 | Utah | RFC | Vandalism | N/A | Physical Attack |
| 2014-01-06 | Texas | TRE | Public Appeal due to Severe Weather - Cold | N/A | Public Appeal |
| 2014-01-06 | Unknown | RFC | Public Appeal due to Severe Weather - Cold | Unknown | Public Appeal |
| 2014-01-06 | Kentucky | RFC | Public Appeal due to Severe Weather - Cold | Unknown | Public Appeal |
| 2014-01-06 | Pennsylvania | RFC | Voltage Reduction due to Severe Weather - Cold | 62,000 | Weather |
| 2014-01-06 | District of Columbia | RFC | Voltage Reduction due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-06 | Unknown | RFC | Voltage Reduction due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-06 | Pennsylvania | RFC | Voltage Reduction due to Severe Weather - Cold | Unknown | Weather |
| 2014-01-06 | Delaware | RFC | Voltage Reduction due to Severe Weather - Cold | Unknown | Weather |
| 2013-12-30 | Salt Lake County Utah | WECC | Physical Attack | N/A | Physical Attack |
| 2013-12-30 | North of Roosevelt lake Arizona | WECC | Physical Attack | N/A | Physical Attack |
| 2013-12-27 | Gilabend Arizona | WECC | Physical Attack | N/A | Physical Attack |
| 2013-12-23 | Central Maine Maine | NPCC | Severe Weather - Ice/Snow | 52,500 | Weather |
| 2013-12-22 | Southern Lower Penninsula, Michigan | RFC | Severe Weather - Ice/Snow | 50,000 | Weather |
| 2013-12-22 | Frontier/Genesee/Northern New York | NPCC | Severe Weather - Ice/Snow | 59,000 | Weather |
| 2013-12-22 | Michigan | RFC | Severe Weather - Ice/Snow | 140,735 | Weather |
| 2013-12-13 | Texas | TRE | Fuel Supply Emergencies (Coal) | Unknown | Fuel Supply Deficiency |
| 2013-12-13 | Texas | TE | Fuel Supply Emergencies (Coal) | Unknown | Fuel Supply Deficiency |
| 2013-12-10 | Arizona | WECC | Suspected Physical Attack | Unknown | Physical Attack |
| 2013-12-09 | Virginia Service Territory | SERC | Severe Weather - Ice/Snow | 88,000 | Weather |
| 2013-12-06 | Saratoga, Utah | WECC | Physical Attack - Vandalism, Theft | N/A | Physical Attack |
| 2013-12-06 | Greater Houston, Texas | TRE | Severe Weather - Ice/Snow | 881,000 | Weather |
| 2013-12-04 | Idaho Falls Area Idaho, Utah-Idaho Border Utah | WECC | Load Shed 100+ MW | Unknown | Load Shed |
| 2013-11-24 | Salt Lake County Utah | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2013-11-21 | Northern California | WECC | Severe Weather - Wind Storm | 89,500 | Weather |
| 2013-11-20 | Salt Lake County Utah | WECC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2013-11-17 | Rochelle, Indiana | RFC | System-wide voltage reductions of 3 percent or more | 7,500 | ? |
| 2013-11-17 | Entire Lower Peninsula Michigan | RFC | Severe Weather - Thunderstorms | 50,000 | Weather |
| 2013-11-17 | Central Indiana | RFC | Severe Weather - Thunderstorms | 61,705 | Weather |
| 2013-11-17 | Central Indiana | RFC | Severe Weather - Tornadoes | 61,705 | Weather |
| 2013-11-17 | North Central Indiana | RFC | Severe Weather - Thunderstorms | 75,065 | Weather |
| 2013-11-17 | Indiana, Michigan | RFC | Severe Weather - Thunderstorms | 77,346 | Weather |
| 2013-11-17 | Entire ComEd Territory Illinois | RFC | Severe Weather - Thunderstorms | 190,000 | Weather |
| 2013-11-17 | Central Missouri, Central Illinois | SERC | Severe Weather - Tornadoes | 200,000 | Weather |
| 2013-11-17 | Michigan | RFC | Severe Weather - Ice and Snow Storm | 325,325 | Weather |
| 2013-11-16 | Salt Lake County, Utah | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2013-11-12 | Eastern Central New Mexico | SPP | Loss of Power from Wholesale Provider; Major Distribution Disruption | Unknown | Distribution Interruption |
| 2013-11-12 | Valle, California | WECC | Electrical System Separation (Islanding) | 48,400 | Islanding |
| 2013-11-05 | Indiana | RFC | Physical Attack | Unknown | Physical Attack |
| 2013-11-04 | Connecicut | NPCC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2013-11-02 | Salt Lake City, Utah | WECC | Physical Attack - Vandalism | N/A | Physical Attack |
| 2013-11-02 | King, Whatcom, and Skagit, Washington | WECC | Severe Weather - Heavy Winds | 105,000 | Weather |
| 2013-11-01 | Wilmington, Delaware | RFC | Physical Attack - Vandalism | Unknown | Physical Attack |
| 2013-10-27 | Houston, Texas | TRE | Severe Weather - Hailstorm | 171,117 | Weather |
| 2013-10-26 | Arizona | WECC | Suspected Physical Attack | Unknown | Physical Attack |
| 2013-10-21 | Location Unknown | WECC | Electrical System Separation (Islanding) | 433 | Islanding |
| 2013-10-19 | California | WECC | Physical Attack | Unknown | Physical Attack |
| 2013-10-16 | Roxboro Plant, North Carolina | SERC | Cyber Event with Potential to Cause Impact | 0 | Cyber Attack |
| 2013-10-11 | Keo, Arkansas | SERC | Physical Attack | Unknown | Physical Attack |
| 2013-10-06 | Jacksonville, Arkansas | SPP | Physical Attack | 9,200 | Physical Attack |
| 2013-09-29 | Cabot Arkansas | SERC | Physcial Attack; Sabotage | Unknown | Physical Attack |
| 2013-09-11 | Southeastern Michigan | RFC | Severe Weather - Thunderstorms | 75,000 | Weather |
| 2013-09-10 | Erie, Pennsylvania | RFC | Load Shed of 100+ MW | Unknown | Load Shed |
| 2013-08-30 | Entire ComEd territory Illinois | RFC | Severe Weather - Thunderstorms | 157,000 | Weather |
| 2013-08-29 | Ashland, Wisconsin | MRO | Electrical System Separation (Islanding); Severe Weather | 7,000 | Islanding |
| 2013-08-29 | Joplin, Missouri | N/A | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-08-28 | Sweetwater County Wyoming | WECC | Physcial Attack; Vandalism | N/A | Physical Attack |
| 2013-08-26 | Tacoma Washington | WECC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-08-23 | New Castle, Delaware | RFC | Physcial Attack; Vandalism | N/A | Physical Attack |
| 2013-08-22 | Gila River, Arizona | WECC | Physcial Attack; Sabotage | N/A | Physical Attack |
| 2013-08-22 | New Castle, Delaware | RFC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-08-21 | Cabot, Arkansas | SERC | Physcial Attack; Sabotage | N/A | Physical Attack |
| 2013-08-19 | Central California | WECC | Severe Weather - Lightning Strike | 124,000 | Weather |
| 2013-08-16 | Houston Service Area Texas | TRE | Severe Weather - Thunderstorms | 219,681 | Weather |
| 2013-08-12 | Portland, Oregon | WECC | Suspicious Activity | Unknown | Physical Attack |
| 2013-08-07 | Green Bay, Wisconsin | MRO | Fuel Supply Emergency (Natural Gas & Fuel Oil) | Unknown | Fuel Supply Deficiency |
| 2013-08-07 | Arlington, Oregon | WECC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-08-07 | Eastern Central Wisconsin | MRO | Severe Weather - Thunderstorms | 51,160 | Weather |
| 2013-08-06 | Holloman Air Force Base, New Mexico | WECC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-08-05 | Vancouver, British Columbia | WECC | Electrical System Separation (Islanding); Severe Weather | Unknown | Islanding |
| 2013-08-04 | Utah | WECC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2013-08-01 | Daytona Beach Florida | FRCC | Loss of 300+ MW Load | 104,498 | ? |
| 2013-08-01 | Western British Columbia | WECC | Electrical System Separation (Islanding | Unknown | Islanding |
| 2013-08-01 | Newburgh, New York | NPCC | Physical Attack; Copper Theft | N/A | Physical Attack |
| 2013-07-25 | Polk Substation, Tacoma Washington | WECC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2013-07-23 | Tulsa, Oklahoma | SPP | Severe Weather - Thunderstorms | 92,748 | Weather |
| 2013-07-22 | California | WECC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-07-19 | New York | NPCC | Severe Weather - Thunderstorms | 74,300 | Weather |
| 2013-07-19 | Michigan | RFC | Severe Weather - Thunderstorms | 156,627 | Weather |
| 2013-07-18 | Southern Orange County California | WECC | Equipment Failure | 123,000 | Equipment |
| 2013-07-18 | Utah | WECC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2013-07-18 | Upstate New York | NPCC | Public Appeal - Heatwave | Unknown | Weather |
| 2013-07-17 | Holtsville, New York | NPCC | Fuel Supply Emergency (Natural Gas) | Unknown | Fuel Supply Deficiency |
| 2013-07-12 | Washington | WECC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-07-11 | Arizona | WECC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-07-10 | Boston, Massachusetts | NPCC | Physical Attack; Copper Theft | 0 | Physical Attack |
| 2013-07-10 | AEP Ohio Power Footprint | RFC | Severe Weather - Thunderstorms | 122,314 | Weather |
| 2013-07-05 | California | WECC | Physical Attack; Vandalism | 2,500 | Physical Attack |
| 2013-07-03 | System-wide Puerto Rico | N/A | Voltage Reduction; Line and Generator Trip | 393,000 | Equipment |
| 2013-07-03 | Sacramento California | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2013-07-02 | Alberta, Canada | WECC | Load Shed 100+MW | Unknown | Load Shed |
| 2013-06-28 | Los Angeles and Orange Counties, California | WECC | Equipment Failure | 65,255 | Equipment |
| 2013-06-28 | Vermont | NPCC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-06-28 | New Castle Delaware | RFC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-06-27 | Richie Substation,Seat Pleasant, Maryland | RFC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-06-27 | South Eastern Michigan | RFC | Severe Weather - Thunderstorms | 138,000 | Weather |
| 2013-06-24 | Indiana | RFC | Severe Weather - Thunderstorms | 86,615 | Weather |
| 2013-06-24 | Illinois | RFC | Severe Weather - Thunderstorms | 283,451 | Weather |
| 2013-06-23 | Central Coast California | WECC | Severe Weather - Fog | 148,000 | Weather |
| 2013-06-22 | Medford Oregon | WECC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2013-06-22 | Eastern Montana | WECC | Suspected Physical Attack | Unknown | Physical Attack |
| 2013-06-21 | Michigan, Iowa | MRO | Suspected Cyber Attack | Unknown | Cyber Attack |
| 2013-06-21 | Pahrump Nevada | WECC | Physical Attack; Vandalism & Sabotage | 1,100 | Physical Attack |
| 2013-06-21 | New Castle Delaware | RFC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-06-21 | Minnesota | MRO | Severe Weather - Hailstorm | 193,000 | Weather |
| 2013-06-21 | Minneapolis/St. Paul area Minnesota | MRO | Severe Weather - Hailstorm | 400,000 | Weather |
| 2013-06-20 | Richie Station (No. 123), Maryland | RFC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-06-19 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2013-06-18 | Wyoming | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2013-06-17 | Hillsborough County Florida | FRCC | Load Shed of 100+ MW Under Emergency Operational Policy | 37 | Load Shed |
| 2013-06-13 | District of Columbia; Maryland | RFC | Loss of 300+ MW Load; Severe Weather - Thunderstorms | 40,000 | Weather |
| 2013-06-13 | Central and Eastern North Carolina | SERC | Severe Weather - Thunderstorms | 53,000 | Weather |
| 2013-06-13 | Ohio; Virginia; West Virginia | RFC; SERC | Severe Weather - Thunderstorms | 90,247 | Weather |
| 2013-06-13 | Southern Company Territory | SERC | Severe Weather - Thunderstorms | 165,798 | Weather |
| 2013-06-13 | Western Piedmont North Carolina | SERC | Severe Weather - Thunderstorms | 175,000 | Weather |
| 2013-06-13 | Richmond Metro area, Virginia | SERC | Severe Weather - Thunderstorms | 283,000 | Weather |
| 2013-06-03 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2013-05-31 | Southeast Kansas, Northeast Oklahoma | MRO | Transmission System Interruption | 6,300 | Transmission Interruption |
| 2013-05-31 | St. Louis Metro Area Missouri | SERC | Severe Weather - Thunderstorms | 100,000 | Weather |
| 2013-05-31 | El Reno, S. Oklahoma City, Oklahoma | SPP | Severe Weather - Tornadoes | 127,000 | Weather |
| 2013-05-31 | Maumelle, Arkansas | SPP | Severe Weather - Lightning | N/A | Weather |
| 2013-05-30 | Saranac, New York | NPCC | Vandalism | N/A | Physical Attack |
| 2013-05-29 | Wilmington, Delaware | RFC | Vandalism/Theft | N/A | Physical Attack |
| 2013-05-29 | Henrico County, Virginia | SERC | Physical Attack | Unknown | Physical Attack |
| 2013-05-29 | Central and Eastern New York | NPCC | Severe Weather - Thunderstorms | 61,795 | Weather |
| 2013-05-28 | Maine | NPCC | Vandalism/Theft | None | Physical Attack |
| 2013-05-22 | System wide Puerto Rico | N/A | System Wide Voltage Reduction | 197,287 | ? |
| 2013-05-20 | Gonzales Area Louisiana | SERC | Generator Trip; Load Shed 100+ MW | 21,800 | Equipment |
| 2013-05-20 | Moore, Oklahoma | SPP | Severe Weather - Tornadoes | 41,306 | Weather |
| 2013-05-17 | Newcastle, Delaware | RFC | Vandalism | Unknown | Physical Attack |
| 2013-05-15 | Wilmington, Delaware | RFC | Vandalism | Unknown | Physical Attack |
| 2013-05-14 | Portland, Oregon | WECC | Vandalism/Theft | N/A | Physical Attack |
| 2013-05-14 | New Hampshire | NPCC | Vandalism | N/A | Physical Attack |
| 2013-05-13 | Central California | WECC | Fuel Supply Emergency - Hydro | Unknown | Fuel Supply Deficiency |
| 2013-05-09 | Alberta, Canada; Washington State | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2013-05-02 | Unknown | WECC | Electrical System Separation (Islanding) | Unknown | Islanding |
| 2013-05-01 | Northeast Colorado | WECC | Electrical System Separation (Islanding) | 35,230 | Islanding |
| 2013-04-25 | Sunol, California | WECC | Vandalism | 0 | Physical Attack |
| 2013-04-23 | South of Humboldt, California | WECC | Electrical System Separation (Islanding) | 1 | Islanding |
| 2013-04-23 | Newark, Delaware | RFC | Vandalism | Unknown | Physical Attack |
| 2013-04-21 | East Tennessee | SERC | Suspected Physical Attack | N/A | Physical Attack |
| 2013-04-18 | Southeast Michigan, Michigan | RFC | Severe Weather - Storms and Wind | 99,188 | Weather |
| 2013-04-17 | Colbert Steam Plant in Cherokee, Alabama | SERC | Suspected Physical Attack | Unknown | Physical Attack |
| 2013-04-16 | California | WECC | Loss of Part of a High Voltage Substation, Physical Attack | 0 | Physical Attack |
| 2013-04-09 | Delaware City, Delaware | RFC | Vandalism | N/A | Physical Attack |
| 2013-04-03 | Colorado Springs, Colorado | WECC | Sabotage; Vandalism | 0 | Physical Attack |
| 2013-04-01 | Connecticut | NPCC | Vandalism - Copper Wire Theft | Unknown | Physical Attack |
| 2013-03-29 | Maryland | RFC | Suspected Physical Attack | Unknown | Physical Attack |
| 2013-03-28 | Wilmington, Delaware | RFC | Vandalism | Unknown | Physical Attack |
| 2013-03-27 | Western Massachusetts | NPCC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2013-03-23 | Connecticut | NPCC | Vandalism | Unknown | Physical Attack |
| 2013-03-18 | Systemwide Puerto Rico | N/A | Generator Trip; Load Shed | 262,937 | Equipment |
| 2013-03-18 | Northeast Florida | FRCC | Suspected Physical Attack | 0 | Physical Attack |
| 2013-03-18 | North/Central Alabama; Georgia | SERC | Severe Weather - Thunderstorms | 240,000 | Weather |
| 2013-03-06 | Northwest Virginia | SERC | Severe Weather - Winter Storm | 233,000 | Weather |
| 2013-03-04 | Metropolitan area Puerto Rico | N/A | Equipment Failure; Transmission System Interruption | Unknown | Transmission Interruption |
| 2013-03-03 | Tacoma Park, Maryland | RFC | Vandalism | Unknown | Physical Attack |
| 2013-03-03 | Merced County, California | WECC | Transmission System Interruption | 58,850 | Transmission Interruption |
| 2013-02-26 | Northern Missouri | SERC | Severe Weather - Winter Storm Nemo | 56,444 | Weather |
| 2013-02-21 | Las Cruces, New Mexico | WECC | Vandalism | Unknown | Physical Attack |
| 2013-02-19 | Stockton, California | WECC | Electrical System Separation (Islanding) | 6,810 | Islanding |
| 2013-02-16 | Prince George's County Maryland | RFC | Vandalism | 1 | Physical Attack |
| 2013-02-15 | Tuxedo, Maryland | RFC | Vandalism | N/A | Physical Attack |
| 2013-02-13 | Eastern Massachusetts | NPCC | Fuel Supply Emergency - Petroleum | 1 | Fuel Supply Deficiency |
| 2013-02-13 | Fort Washington, Maryland | RFC | Vandalism | 1 | Physical Attack |
| 2013-02-10 | Puerto Rico | N/A | Generator Trip; Voltage Reduction | Unknown | Equipment |
| 2013-02-09 | El Paso, New Mexico | WECC | Vandalism; Equipment Fault | Unknown | Physical Attack |
| 2013-02-08 | District of Columbia; Prince George's County Maryland | RFC | Equipment Trip & Failure | 52,000 | Equipment |
| 2013-02-08 | Central and eastern Massachusetts; Rhode Island | NPCC | Severe Weather - Winter Storm Nemo | 50,000 | Weather |
| 2013-02-08 | Boston area and Southeast Massachusetts | NPCC | Severe Weather - Winter Storm Nemo | 50,000 | Weather |
| 2013-02-07 | Cincinnati, Ohio | RFC | Vandalism | 0 | Physical Attack |
| 2013-02-02 | El Paso, New Mexico | WECC | Vandalism | N/A | Physical Attack |
| 2013-01-31 | Connecticut | NPCC | Severe Weather - Wind Storm | 75,000 | Weather |
| 2013-01-31 | Central and Eastern Virginia | SERC | Severe Weather - Wind Storm | 119,000 | Weather |
| 2013-01-28 | Tacoma Narrows Crossing, Washington | WECC | Physical Attack | Unknown | Physical Attack |
| 2013-01-20 | Southeastern Michigan | RFC | Severe Weather - Wind Storm | 146,500 | Weather |
| 2013-01-17 | Elizabeth City, North Carolina | SERC | Distribution Interruption | 12,000 | Distribution Interruption |
| 2013-01-17 | Northeast Tennessee | SERC | Severe Weather - Winter Storm | 80,000 | Weather |
| 2013-01-17 | Southwest Virginia, Southern West Virginia | RFC | Severe Weather - Winter Storm | 127,000 | Weather |
| 2013-01-16 | San Juan County, New Mexico | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2013-01-16 | Webster County, Iowa | MRO | Physical Attack | N/A | Physical Attack |
| 2013-01-16 | Denton, Maryland | RFC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2013-01-07 | Denton, Maryland | RFC | Physcial Attack; Vandalism | Unknown | Physical Attack |
| 2012-12-31 | North Carolina | SERC | Transmission Interruption | 12,000 | Transmission Interruption |
| 2012-12-26 | Stantonsburg, North Carolina | SERC | Severe Weather - Thunderstorm | 1,200 | Weather |
| 2012-12-25 | Arkansas; Louisiana; Mississippi; Texas | SPP | Severe Weather - Winter Storm | 242,509 | Weather |
| 2012-12-25 | Houston, Texas | TRE | Severe Weather - Cold Front, High Winds | 262,000 | Weather |
| 2012-12-17 | Tacoma, Washington | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-12-06 | Greater San Jose, California | WECC | Load Shed | Unknown | Load Shed |
| 2012-12-03 | Tacoma, Washington | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-12-02 | Northern California | WECC | Severe Weather - Winter Storm | 125,000 | Weather |
| 2012-11-27 | New Hampshire | NPCC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-11-26 | Frankfort, Delaware | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-11-26 | Georgetown, Delaware | RFC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2012-11-21 | Bethany Beach, Delaware | RFC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2012-11-17 | Comanche Peak, Texas | TRE | Fuel Supply Deficiency | 0 | Fuel Supply Deficiency |
| 2012-11-15 | Iowa; Michigan | MRO | Suspected Cyber Attack | Unknown | Cyber Attack |
| 2012-11-15 | Southeast Massachusetts | NPCC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-11-08 | Bishopville, Maryland | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-11-07 | New Hampshire | NPCC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-11-02 | Concord, Vermont | NPCC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-30 | Hyattsville, Maryland | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-30 | Fitzwilliam, New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2012-10-30 | Pueblo, Colorado | WECC | Physical Attack; Vandalism | Unknown | Physical Attack |
| 2012-10-30 | Greater Detroit Michigan | RFC | Severe Weather - Nor'easter | 133,777 | Weather |
| 2012-10-29 | LaGrande, Washington | WECC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-29 | Las Vegas, Nevada | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-10-29 | West Virginia | RFC | Severe Weather - Hurricane Sandy | 208,000 | Weather |
| 2012-10-29 | New Jersey | RFC | Severe Weather - Hurricane Sandy | Unknown | Weather |
| 2012-10-29 | Delaware, Maryland | RFC | Severe Weather - Hurricane Sandy | 70,000 | Weather |
| 2012-10-29 | New Jersey | RFC | Severe Weather - Hurricane Sandy | 217,000 | Weather |
| 2012-10-29 | Long Island, New York | NPCC | Severe Weather - Hurricane Sandy | 632,816 | Weather |
| 2012-10-29 | Boston, Southeast Massachusetts | NPCC | Severe Weather - Hurricane Sandy | 50,000 | Weather |
| 2012-10-29 | Eastern Massachusetts | NPCC | Severe Weather - Hurricane Sandy | 50,000 | Weather |
| 2012-10-29 | Connecticut, Western Massachusetts | NPCC | Severe Weather - Hurricane Sandy | 649,075 | Weather |
| 2012-10-29 | Maryland; West Virginia | RFC | Severe Weather - Hurricane Sandy | 150,000 | Weather |
| 2012-10-29 | Eastern Pennsylvania | RFC | Severe Weather - Hurricane Sandy | 270,000 | Weather |
| 2012-10-29 | Greater Cleveland Ohio | RFC | Severe Weather - Hurricane Sandy | 346,000 | Weather |
| 2012-10-29 | Greater New York City, New York | NPCC | Severe Weather - Hurricane Sandy | 818,000 | Weather |
| 2012-10-29 | New Jersey | NPCC | Severe Weather - Hurricane Sandy | 50,000 | Weather |
| 2012-10-29 | New Hampshire | NPCC | Severe Weather - Hurricane Sandy | 50,000 | Weather |
| 2012-10-29 | Greater Baltimore Maryland | RFC | Severe Weather - Hurricane Sandy | 219,000 | Weather |
| 2012-10-29 | Greater Philadelphia Pennsylvania | RFC | Severe Weather - Hurricane Sandy | 850,000 | Weather |
| 2012-10-29 | Central Pennsylvania | RFC | Severe Weather - Hurricane Sandy | 400,000 | Weather |
| 2012-10-29 | Virginia | RFC | Severe Weather - Hurricane Sandy | 156,000 | Weather |
| 2012-10-29 | Southeast New York; New Jersey | NPCC; RFC | Severe Weather - Hurricane Sandy | 200,000 | Weather |
| 2012-10-29 | New York | NP | Severe Weather - Hurricane Sandy | 371,000 | Weather |
| 2012-10-29 | Indiana; Kentucky; Michigan; Ohio | RFC; SERC | Severe Weather - Nor'easter | 173,273 | Weather |
| 2012-10-29 | Southeast and Seacoast Maine | NPCC | Severe Weather - Hurricane Sandy | 50,000 | Weather |
| 2012-10-25 | West Lanham, Maryland | RFC | Physical Attack; Vandalism | N/A | Physical Attack |
| 2012-10-25 | Pueblo, Colorado | WECC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-25 | Newark, Delaware | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-24 | Kingswood, Maryland | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-24 | Brighton, Maryland | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-10-24 | Frankford, Delaware | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-23 | Crawfordsville, Indiana | RFC | Transmission System Interruption | 9,800 | Transmission Interruption |
| 2012-10-22 | Norbeck, Maryland | RFC | Physical Attack; Vandalism | 0 | Physical Attack |
| 2012-10-15 | Southeast Vermont | NPCC | Vandalism; Theft | 0 | Physical Attack |
| 2012-10-14 | Northern California | WECC | Electrical System Separation (Islanding) | 2,035 | Islanding |
| 2012-10-11 | Seat Pleasant, Maryland | RFC | Vandalism | 0 | Physical Attack |
| 2012-10-09 | Seat Pleasant, Maryland | RFC | Vandalism | 0 | Physical Attack |
| 2012-10-05 | Greater Sacramento, California | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-09-26 | Puerto Rico | N/A | Voltage Reduction | 371,526 | ? |
| 2012-09-24 | Brighton, Maryland | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-09-11 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | 0 | Islanding |
| 2012-09-08 | Prince George's County, Montgomery County Maryland; D.C. | RFC | Severe Weather - Thunderstorms | 65,000 | Weather |
| 2012-09-08 | Virginia | SERC | Severe Weather - Thunderstorms | 119,000 | Weather |
| 2012-09-07 | Arkansas | SERC | Severe Weather - Thunderstorms | 64,951 | Weather |
| 2012-09-06 | Oroville, California | WECC | Fuel Supply Deficiency (Water) | N/A | Fuel Supply Deficiency |
| 2012-09-05 | Alberta, Canada | WECC | Electrical System Separation (Islanding) | 0 | Islanding |
| 2012-08-29 | Louisiana | SERC | Severe Weather - Hurricane Isaac | 68,018 | Weather |
| 2012-08-29 | Louisiana | SERC | Severe Weather - Hurricane Isaac | 50,000 | Weather |
| 2012-08-29 | Louisiana | SPP | Severe Weather - Hurricane Isaac | 95,000 | Weather |
| 2012-08-28 | Arkansas, Louisiana, Mississippi | SERC | Severe Weather - Hurricane Isaac | 770,000 | Weather |
| 2012-08-26 | Florida | FRCC | Severe Weather - TS Isaac | 440,000 | Weather |
| 2012-08-19 | El Paso, Texas | WECC | Suspected Physical Attack | 3,314 | Physical Attack |
| 2012-08-16 | Northern Indiana | RFC | Vandalism | 0 | Physical Attack |
| 2012-08-13 | Knoxville, Tennessee | SERC | Vandalism | Unknown | Physical Attack |
| 2012-08-13 | CFE (Mexico & U.S.) | WECC | Severe Weather - Dust Storm; Load Shed Event | Unknown | Weather |
| 2012-08-11 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-08-04 | Temblor Substation in McKittrick, California | WECC | Electrical System Separation (Islanding) | 127 | Islanding |
| 2012-08-04 | Northern Indiana | RFC | Severe Weather - Thunderstorms | 61,413 | Weather |
| 2012-08-04 | Northeast Illinois | RFC | Severe Weather - Thunderstorms | 325,000 | Weather |
| 2012-08-01 | Oklahoma, Arkansas | SPP | Public Appeal to Reduce Electricity Usage | Unknown | Public Appeal |
| 2012-07-27 | Central Indiana | RFC | Severe Weather - Thunderstorms | 52,702 | Weather |
| 2012-07-26 | Western Pennsylvania | RFC | Severe Weather - Thunderstorms | 65,112 | Weather |
| 2012-07-26 | North/Central Pennsylvania | RFC | Severe Weather - Thunderstorms | 65,000 | Weather |
| 2012-07-26 | Eastern Ohio | RFC | Severe Weather - Thunderstorms | 57,054 | Weather |
| 2012-07-24 | Northern Indiana | RFC | Severe Weather - Thunderstorms | 82,621 | Weather |
| 2012-07-24 | Northern Illinois | RFC | Severe Weather - Thunderstorms | 330,000 | Weather |
| 2012-07-21 | City of Lubbock, Texas | SPP | Severe Weather; Equipment Failure | 70,000 | Weather |
| 2012-07-19 | Niagara County, New York | NPCC | Fuel Supply Deficiency (Coal) | Unknown | Fuel Supply Deficiency |
| 2012-07-19 | Newark, Delaware | RFC | Vandalism | N/A | Physical Attack |
| 2012-07-18 | Southeast Ohio, Northern Kentucky, Southern Indiana | RFC | Severe Weather - Thunderstorms | 103,000 | Weather |
| 2012-07-18 | Eastern Ohio | RFC | Severe Weather - Thunderstorms | 67,000 | Weather |
| 2012-07-18 | Northern Illinois | RFC | Severe Weather - Thunderstorms | 181,000 | Weather |
| 2012-07-16 | Little Rock, Arkansas | SPP | Public Appeal to Reduce Energy Usage | N/A | Public Appeal |
| 2012-07-09 | Alberta, Canada | WECC | Energy Deficiency Alert | Unknown | Fuel Supply Deficiency |
| 2012-07-07 | CAISO California | WECC | Fuel Supply Deficiency (Water) | 0 | Fuel Supply Deficiency |
| 2012-07-07 | Lower Valley, Central, Susquehanna Regions Pennsylvania | RFC | Severe Weather - Thunderstorms | 64,500 | Weather |
| 2012-07-07 | Central and Northern New Jersey | RFC | Severe Weather - Thunderstorms | 95,400 | Weather |
| 2012-07-06 | Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-07-05 | Lower Peninsula Michigan | RFC | Severe Weather - Thunderstorms | 111,000 | Weather |
| 2012-07-05 | Northeast Tennessee | SERC | Severe Weather - Wind & Storms | 50,001 | Weather |
| 2012-07-01 | Illinois | RFC | Severe Weather - Thunderstorms | 320,000 | Weather |
| 2012-07-01 | Tarboro, North Carolina | SERC | Operational Failure; Storm Damage | 6,100 | Weather |
| 2012-07-01 | Northern, Central and Eastern North Carolina | SERC | Severe Weather | 69,106 | Weather |
| 2012-06-30 | Northeast Tennessee | SERC | Public Appeal to Reduce Electricity Usage | UNK | Public Appeal |
| 2012-06-30 | Calvert, Charles, St. Mary's, Prince Georges Counties Maryland | RFC | Severe Weather - Thunderstorms | 60,000 | Weather |
| 2012-06-30 | Delaware; Maryland | RFC | Severe Weather - Thunderstorms | 86,390 | Weather |
| 2012-06-30 | Atlantic City Electric Service Territory New Jersey | RFC | Severe Weather - Thunderstorms | 205,000 | Weather |
| 2012-06-29 | Puerto Rico | N/A | Equipment Trip & Failure | 900,000 | Equipment |
| 2012-06-29 | New Castle, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-06-29 | Eastern, Arkansas | SERC | Public Appeal to Reduce Electricity Usage | 7,935 | Public Appeal |
| 2012-06-29 | Northeast Illinois | RFC | Severe Weather - Thunderstorms | 109,000 | Weather |
| 2012-06-29 | Maryland; West Virginia | RFC | Severe Weather - Thunderstorms | 145,000 | Weather |
| 2012-06-29 | Dayton, Ohio | RFC | Severe Weather - Thunderstorms | 175,000 | Weather |
| 2012-06-29 | West Virginia | RFC | Severe Weather - Thunderstorms | 265,000 | Weather |
| 2012-06-29 | Montgomery and Prince Georges Counties, Maryland; District of Columbia | RFC | Severe Weather - Thunderstorms | 425,000 | Weather |
| 2012-06-29 | Greater Baltimore area, Maryland | RFC | Severe Weather - Thunderstorms | 600,000 | Weather |
| 2012-06-29 | Virginia | SERC | Severe Weather - Thunderstorms | 880,000 | Weather |
| 2012-06-29 | Indiana; Michigan; Ohio; West Virginia | RFC | Severe Weather - Thunderstorms | 1,355,919 | Weather |
| 2012-06-29 | Eastern Indiana; Northern Kentucky; Greater Cincinnati area Ohio | RFC | Severe Weather - Thunderstorms | 4,645,572 | Weather |
| 2012-06-25 | Central Virginia | SERC | Severe Weather - Wind & Rain | 190,000 | Weather |
| 2012-06-23 | North Shore, Massachusetts | NPCC | Load Shed | 29,250 | Load Shed |
| 2012-06-19 | CAISO Territory California | WECC | Fuel Supply Deficiency (Water) | UNK | Fuel Supply Deficiency |
| 2012-06-19 | Minneapolis/St. Paul, Minnesota | MRO | Severe Weather - Thunderstorms | 68,200 | Weather |
| 2012-06-13 | San Juan County, New Mexico | WECC | Vandalism | 0 | Physical Attack |
| 2012-06-12 | Houston, Texas | TRE | Severe Weather - Thunderstorms | 175,000 | Weather |
| 2012-06-11 | North/Central Alabama; North/Central Georgia | SERC | Severe Weather - Thunderstorms | 110,591 | Weather |
| 2012-06-08 | Denver Metro Area, Colorado | WECC | Load Shed | 30,379 | Load Shed |
| 2012-06-06 | Columbia Heights, NW, Washington DC | RFC | Vandalism | 0 | Physical Attack |
| 2012-06-06 | Delhi, New York | NPCC | Vandalism | N/A | Physical Attack |
| 2012-06-02 | San Francisco, California | WECC | Vandalism | N/A | Physical Attack |
| 2012-05-31 | Columbus, Ohio | RFC | Physical Attack | 0 | Physical Attack |
| 2012-05-29 | Oklahoma City Metro Area, Oklahoma | SPP | Severe Weather - Thunderstorms | 112,000 | Weather |
| 2012-05-29 | Alder Dam, Pierce County, Washington | WECC | Physical Attack | N/A | Weather |
| 2012-05-24 | Tyngsborough, Massachusetts | NPCC | Physical Attack | UNK | Physical Attack |
| 2012-05-11 | Lakewood, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-05-07 | Williston, Vermont | NPCC | Vandalism | 0 | Physical Attack |
| 2012-05-07 | Eastern Ohio | RFC | Load Shed/Severe Weather - Lightning Storm | 1 | Weather |
| 2012-04-23 | Northwest Indiana | RFC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-23 | Snohomish County, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-21 | East Bridgewater, Massachusetts | NPCC | Physical Attack | N/A | Physical Attack |
| 2012-04-21 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-20 | Metropolitan Houston, Texas | TRE | Severe Weather - Thunderstorms | 120,377 | Weather |
| 2012-04-19 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-17 | San Diego County, California | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-04-16 | Southeast, Michigan | RFC | Severe Weather - High Winds | 111,393 | Weather |
| 2012-04-15 | Georgia | SERC | Suspected Physical Attack | UNK | Physical Attack |
| 2012-04-12 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-11 | North Attleboro, Massachusetts | NPCC | Vandalism | 0 | Physical Attack |
| 2012-04-07 | Newark, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-04-07 | Newark, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-04-07 | Newark, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-04-04 | WAPA-SNR Regional Office, California | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-04-03 | West Rutland, Vermont | NPCC | Vandalism | 0 | Physical Attack |
| 2012-04-03 | Seattle, Washington | WECC | Physical Attack | 0 | Physical Attack |
| 2012-04-01 | Council Bluffs, Iowa | MRO | Vandalism | 0 | Physical Attack |
| 2012-03-30 | Vermont | NPCC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-03-29 | Lansing, Michigan | RFC | Electrical System Separation (Islanding) | 0 | Islanding |
| 2012-03-28 | Graham, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-03-26 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-03-23 | Newark, Delaware | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-03-20 | Houston, Texas | TRE | Severe Weather - Thunderstorms | 96,000 | Weather |
| 2012-03-16 | New Castle, Delaware | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-03-04 | Prince Georges County, Maryland | RFC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-03-04 | Texas | SERC | Suspected Physical Attack | UNK | Physical Attack |
| 2012-03-02 | Piggott, Arkansas | SERC | Operational Failure/Equipment Malfunction | N/A | Equipment |
| 2012-03-02 | Southeastern, Michigan | RFC | Severe Weather - Winter Storm | 130,000 | Weather |
| 2012-03-02 | Lower Peninsula, Michigan | RFC | Severe Weather - Winter Storm | 140,000 | Weather |
| 2012-03-02 | Northern Alabama; Southeast Tennessee | SERC | Severe Weather - Tornadoes | UNK | Weather |
| 2012-02-28 | Sacramento, California | WECC | Electrical System Separation (Islanding) | 1 | Islanding |
| 2012-02-28 | Coos County Oregon | WECC | Suspected Physical Attack | UNK | Physical Attack |
| 2012-02-24 | Spanaway, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-02-23 | South East College Station, Texas | TRE | Suspected Physical Attack | 0 | Physical Attack |
| 2012-02-23 | Londonderry, New Hampshire | NPCC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-02-19 | Kentucky, Virginia, West Virginia | SERC | Severe Weather - Winter Storm | 90,000 | Weather |
| 2012-02-17 | Little Rock, Arkansas | SERC | Suspected Cyber Attack | UNK | Cyber Attack |
| 2012-02-15 | Port Orchard, Washington | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-02-14 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-02-13 | Asheville, North Carolina | SERC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-02-11 | Lamar, Colorado | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-02-11 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2012-01-29 | Roosevelt Substation, Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-01-27 | Frederickson Substation, Spanaway, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-01-24 | Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-01-19 | King, Pierce and Thurston Counties, Washington | WECC | Severe Weather - Winter Storm | 426,000 | Weather |
| 2012-01-17 | Austin, Texas | TRE | Suspected Cyber Attack | 0 | Cyber Attack |
| 2012-01-15 | Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2012-01-13 | Newark, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-01-12 | Newark, Delaware | RFC | Physical Attack | 0 | Physical Attack |
| 2012-01-11 | Nevada | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2012-01-10 | Rusk County, Texas | TRE | Vandalism | N/A | Physical Attack |
| 2012-01-09 | Louisiana | SERC | Load Shed | 1 | Load Shed |
| 2012-01-09 | Watertown, Connecticut | NPCC | Vandalism | N/A | Physical Attack |
| 2012-01-05 | CSWS/AEP West territory, Oklahoma | SPP | Sabotage | 0 | Physical Attack |
| 2012-01-05 | Creek County, Oklahoma | SPP | Suspected physical attack | N/A | Physical Attack |
| 2012-01-04 | Tacoma, Washington | WECC | Suspected physical attack | N/A | Physical Attack |
| 2011-12-31 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-21 | Boise, Idaho | WECC | Suspected Cyber Attack | 0 | Cyber Attack |
| 2011-12-20 | Sweet Home, Oregon | WECC | Suspected Physical Attack | 2,500 | Physical Attack |
| 2011-12-20 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-19 | Croft Substation, Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-13 | Clinton County Ohio | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-12-08 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-07 | Central Virginia | SERC | Severe Weather | 60,000 | Weather |
| 2011-12-06 | Montague, Michigan | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-12-06 | Bismarck-Mandan, North Dakota | MRO | Public Appeal to Reduce Electricity Usage | 34,500 | Public Appeal |
| 2011-12-05 | Tacoma, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-02 | Rusk County Texas | TRE | Suspected Physical Attack | N/A | Physical Attack |
| 2011-12-01 | Wasatch Front Area Utah | WECC | Severe Weather | 60,000 | Weather |
| 2011-12-01 | Southern California | WECC | Severe Weather | 91,690 | Weather |
| 2011-12-01 | Northern California | WECC | Severe Weather | 100,000 | Weather |
| 2011-11-30 | Orchard Substation, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-11-30 | City of Los Angeles, California | WECC | Severe Weather | 150,000 | Weather |
| 2011-11-22 | Indiana | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-11-14 | McKee, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-11-13 | Cate Road, Deerfield, New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2011-11-04 | Sweetwater County, Wyoming | WECC | Vandalism | 0 | Physical Attack |
| 2011-10-29 | Pennsylvania | RFC | Severe Weather | 50,000 | Weather |
| 2011-10-29 | New York City area | NPCC | Severe Weather | 50,000 | Weather |
| 2011-10-29 | New Jersey; New York | NPCC, RFC | Severe Weather | 74,000 | Weather |
| 2011-10-29 | Southeast Pennsylvania | RFC | Severe Weather | 109,335 | Weather |
| 2011-10-29 | Mid-Hudson Valley Region, New York | NPCC | Severe Weather | 145,000 | Weather |
| 2011-10-29 | Harrisburg, Lehigh Valley, Lancaster Region Pennsylvania | RFC | Severe Weather | 146,721 | Weather |
| 2011-10-29 | Southeast New York | NPCC | Severe Weather | 161,151 | Weather |
| 2011-10-29 | New Jersey | RFC | Severe Weather | 197,000 | Weather |
| 2011-10-29 | Pennsylvania | RFC | Severe Weather | 312,359 | Weather |
| 2011-10-29 | Northwest and Central New Jersey | RFC | Severe Weather | 379,000 | Weather |
| 2011-10-29 | Connecticut; Maine; Massachusetts; New Hampshire; Rhode Island | NPCC | Severe Weather | 1,418,100 | Weather |
| 2011-10-27 | Munster, Indiana | RFC | Vandalism | N/A | Physical Attack |
| 2011-10-26 | Denver; Ft. Collins, Colorado | WECC | Severe Weather | 204,000 | Weather |
| 2011-10-24 | Holmesburg Substation, Philadelphia, Pennsylvania | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-10-20 | McKee, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-10-18 | Holmesburg Substation, Philadelphia, Pennsylvania | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-10-17 | Seat Pleasant, Maryland | RFC | Vandalism | 0 | Physical Attack |
| 2011-10-17 | Southwest Ohio | RFC | Vandalism | 2,000 | Physical Attack |
| 2011-10-14 | English Creek, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-10-07 | Olympic Pipeline, Spanaway, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-10-06 | Oquirrh Substation, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-09-30 | Wilmington, Delaware | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-09-29 | Collins Substation, Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-09-29 | Houston metro area, Texas | TRE | Severe Weather | 65,000 | Weather |
| 2011-09-28 | Dorothy, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-09-28 | Bethany Beach, Delaware | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-09-28 | Watertown, Connecticut | NPCC | Vandalism | N/A | Physical Attack |
| 2011-09-26 | McKee City, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-09-24 | Collins Substation, Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-09-23 | North Haven, Connecticut | NPCC | Vandalism | 0 | Physical Attack |
| 2011-09-22 | Montgomery County, Ohio | RFC | Vandalism | 0 | Physical Attack |
| 2011-09-21 | Puerto Rico | N/A | Generation Inadequacy; Load Shed | 319,616 | Generation Interruption |
| 2011-09-21 | Hockessin, Delaware | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-09-20 | Lacamas Substaion, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-09-14 | Salt Lake County, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-09-13 | Saranac, New York | NPCC | Vandalism | 0 | Physical Attack |
| 2011-09-13 | Lacamas Substation, Roy, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-09-12 | English Creek, New Jersey | RFC | Vandalism | 0 | Physical Attack |
| 2011-09-08 | Arizona; California | WECC | Transmission/Distribution Interruption; Load Shed; Generation Inadequacy | 2,000,000 | Generation Interruption |
| 2011-09-08 | Collins Substation, Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-09-07 | Western Connecticut; New York | NPCC | Actual Physical Attack | 0 | Physical Attack |
| 2011-09-05 | Alabama; Georgia | SERC | Severe Weather | 53,295 | Weather |
| 2011-09-03 | Southeast Lower Peninsula, Michigan | RFC | Severe Weather | 105,000 | Weather |
| 2011-09-01 | Graham Substaion, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-08-31 | Southwest Ohio | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-08-28 | Calapooya Substation, Oregon | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-08-28 | Borough's and Westshester County New York | NPCC | Severe Weather | 50,000 | Weather |
| 2011-08-28 | Eastern Massachusetts | NPCC | Severe Weather | 50,000 | Weather |
| 2011-08-28 | New York | NPCC | Severe Weather | 99,700 | Weather |
| 2011-08-28 | Eastern New York | NPCC | Severe Weather | 100,000 | Weather |
| 2011-08-28 | New York | NPCC | Severe Weather | 116,000 | Weather |
| 2011-08-28 | Long Island, New York | NPCC | Severe Weather | 152,261 | Weather |
| 2011-08-28 | Southwest Connecticut | NPCC | Severe Weather | 158,000 | Weather |
| 2011-08-28 | Mid-Hudson, New York | NPCC | Severe Weather | 180,000 | Weather |
| 2011-08-28 | Eastern and Northeastern Pennsylvania | RFC | Severe Weather | 284,000 | Weather |
| 2011-08-28 | Northern and Central New Jersey | RFC | Severe Weather | 650,000 | Weather |
| 2011-08-28 | New Jersey | RFC | Severe Weather | 665,000 | Weather |
| 2011-08-27 | Wilson County North Carolina | SERC | Distribution System Interruption | 1,200 | Distribution Interruption |
| 2011-08-27 | Maryland | RFC | Severe Weather | 108,000 | Weather |
| 2011-08-27 | Eastern North Carolina | SERC | Severe Weather | 136,000 | Weather |
| 2011-08-27 | Southern New Jersey | RFC | Severe Weather | 140,000 | Weather |
| 2011-08-27 | Delaware; Maryland | RFC | Severe Weather | 165,000 | Weather |
| 2011-08-27 | District of Columbia; Maryland | RFC | Severe Weather | 220,000 | Weather |
| 2011-08-27 | Pennsylvania | RFC | Severe Weather | 264,000 | Weather |
| 2011-08-27 | Eastern North Carolina | SERC | Severe Weather | 285,465 | Weather |
| 2011-08-27 | Maryland | RFC | Severe Weather | 760,113 | Weather |
| 2011-08-27 | North Carolina; Virginia | SERC | Severe Weather | 1,000,000 | Weather |
| 2011-08-26 | Pennsylvania | RFC | Severe Weather | 200,717 | Weather |
| 2011-08-25 | Maine | NPCC | Suspected Physical Attack | 0 | Cyber Attack |
| 2011-08-25 | Cleveland area, Ohio | RFC | Severe Weather | 107,833 | Weather |
| 2011-08-24 | Texas | TRE | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-08-24 | Arkansas, Louisiana, Texas | SPP | Severe Weather | 53,064 | Weather |
| 2011-08-24 | Houston area, Texas | TRE | Severe Weather | 79,000 | Weather |
| 2011-08-23 | Virginia | RFC | Earthquake | 0 | Natural Disaster |
| 2011-08-23 | Southeastern New Mexico, Texas Panhandle | SPP | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-08-23 | Texas | TRE | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-08-22 | Collins Substation, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-08-21 | Puerto Rico | N/A | Severe Weather | 931,000 | Weather |
| 2011-08-20 | Southeastern Michigan | RFC | Severe Weather | 65,000 | Weather |
| 2011-08-18 | Collins Substation, Washington | WECC | Suspected Physical Attack | N/A | Physical Attack |
| 2011-08-15 | Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-08-13 | Kentucky | SERC | Severe Weather | 181,700 | Weather |
| 2011-08-09 | Polk Substation, Tacoma, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-08-08 | Oklahoma | SPP | Electrical System Separation (Islanding) | 14,500 | Islanding |
| 2011-08-08 | Greene County, Ohio | RFC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-08-08 | Collins Substation, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-08-08 | Northern and Central Oklahoma | SPP | Severe Weather | 54,000 | Weather |
| 2011-08-04 | Arkansas, Oklahoma, Texas | SPP | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-08-03 | Western New York | NPCC | Fuel Supply Deficiency (Coal) | UNK | Fuel Supply Deficiency |
| 2011-08-03 | Central Arkansas | SPP | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-08-03 | Northeast Oklahoma | SPP | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-08-02 | Oklahoma | SPP | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-08-02 | Northeast, Illinois | RFC | Severe Weather | 71,500 | Weather |
| 2011-08-01 | Jefferson, Oregon | WECC | Vandalism | N/A | Physical Attack |
| 2011-08-01 | Texas | TRE | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-07-29 | Fredrickson, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-07-29 | Central New Jersey | RFC | Severe Weather | 67,900 | Weather |
| 2011-07-28 | Daviess County, Kentucky | SERC | Fuel Supply Deficiency (Coal) | N/A | Fuel Supply Deficiency |
| 2011-07-28 | Indiana | RFC | Vandalism | N/A | Physical Attack |
| 2011-07-28 | Spanaway, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-07-28 | Entire ComEd Territory, Indiana | RFC | Severe Weather | 201,000 | Weather |
| 2011-07-27 | Fife, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-07-26 | Backup Control Center, Oklahoma | SPP | Vandalism | 0 | Physical Attack |
| 2011-07-24 | Southern, New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2011-07-23 | Illinois | RFC | Severe Weather | 169,000 | Weather |
| 2011-07-22 | Ohio | RFC | Load Shed | 23,000 | Load Shed |
| 2011-07-22 | Upstate, New York | NPCC | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-07-21 | Lower Peninsula, Michigan | RFC | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-07-21 | Springfield, Illinois | SERC | Public Appeal to Reduce Electricity Usage | N/A | Public Appeal |
| 2011-07-20 | Frederickson Substation, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-07-19 | Maine | NPCC | Vandalism | N/A | Physical Attack |
| 2011-07-18 | Southeast Michigan | RFC | Severe Weather | 197,166 | Weather |
| 2011-07-14 | Texas | TRE | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-07-13 | Pueblo, Colorado | WECC | Load Shed | N/A | Load Shed |
| 2011-07-12 | Maine | NPCC | Vandalism | 0 | Physical Attack |
| 2011-07-12 | California | WECC | Suspected Physical Attack | UNK | Physical Attack |
| 2011-07-11 | Southwest Ohio | RFC | Vandalism | 0 | Physical Attack |
| 2011-07-11 | Maine | NPCC | Vandalism | 0 | Physical Attack |
| 2011-07-11 | Western and Southern Lower Peninsula Michigan | RFC | Severe Weather | 85,000 | Weather |
| 2011-07-11 | Michigan | RFC | Severe Weather | 103,000 | Weather |
| 2011-07-11 | Indiana, Michigan, Ohio | RFC | Severe Weather | 120,000 | Weather |
| 2011-07-11 | Illinois | RFC | Severe Weather | 500,000 | Weather |
| 2011-07-08 | PJM Corporate Office, Pennsylvania | RFC | Suspected Cyber Attack | UNK | Cyber Attack |
| 2011-07-08 | Saginaw, Minnesota | MRO | Vandalism | 0 | Physical Attack |
| 2011-07-06 | Vermont | NPCC | Vandalism | N/A | Physical Attack |
| 2011-07-05 | West Valley Substation Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-07-04 | Virginia | SERC | Severe Weather | 51,580 | Weather |
| 2011-07-02 | South East, Lower Peninsula, Michigan | RFC | Severe Weather | 182,000 | Weather |
| 2011-07-01 | CONVEX Local Control Center, Connecticut | NPCC | Vandalism | 0 | Physical Attack |
| 2011-07-01 | Greene County Ohio | RFC | Vandalism | 0 | Physical Attack |
| 2011-07-01 | Southwest and South Central Minnesota | MRO | Severe Weather | 70,000 | Weather |
| 2011-06-30 | Phoenix, Arizona | WECC | Major System Interruption/Load Shed | 160,000 | Load Shed |
| 2011-06-30 | Olympic Pipeline Substation, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-06-30 | Illinois | RFC | Severe Weather | 121,000 | Weather |
| 2011-06-29 | Panhandle and Muleshoe, Texas | SPP | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-06-27 | Olympic Pipeline Substation, Washington | WECC | Vandalism | UNK | Physical Attack |
| 2011-06-27 | Texas | TRE | Public Appeal to Reduce Electricity Usage | 0 | Public Appeal |
| 2011-06-27 | Illinois; Missouri | SERC | Severe Thunderstorms | 80,000 | Weather |
| 2011-06-26 | Southwest Kansas | SPP | Public Appeal to Reduce Electricity Usage | UNK | Public Appeal |
| 2011-06-26 | Alabama; Georgia | SERC | Severe Thunderstorms | 90,160 | Weather |
| 2011-06-24 | North/North Central Alabama; Georgia | SERC | Severe Thunderstorms | 102,275 | Weather |
| 2011-06-23 | Highgate, Vermont | NPCC | Vandalism | 0 | Physical Attack |
| 2011-06-22 | Knoble Substation, Spanaway, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-06-22 | Alabama; Georgia | SERC | Severe Thunderstorms | 75,101 | Weather |
| 2011-06-22 | Knoxville, Tennessee | SERC | Severe Weather | 106,300 | Weather |
| 2011-06-21 | AEP Region | RFC | Severe Weather | 56,000 | Weather |
| 2011-06-21 | Illinois | RFC | Severe Thunderstorms | 300,000 | Weather |
| 2011-06-20 | Collins Substation, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-06-18 | Eastern, Arkansas | SPP | Public Appeal to Reduce Electricity Usage | UNK | Public Appeal |
| 2011-06-18 | North Carolina; South Carolina | SERC | Severe Thunderstorms | 70,000 | Weather |
| 2011-06-18 | Northern, Georgia | SERC | Severe Thunderstorms | 93,828 | Weather |
| 2011-06-15 | Bingham County, Idaho | WECC | Vandalism | N/A | Physical Attack |
| 2011-06-15 | Piedmont, North Carolina | SERC | Severe Thunderstorms | 70,135 | Weather |
| 2011-06-15 | Georgia | SERC | Severe Thunderstorms | 169,000 | Weather |
| 2011-06-12 | Virginia | RFC | Severe Thunderstorms | 56,000 | Weather |
| 2011-06-09 | San Antonio Dam Area, Los Angeles County, California | WECC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-06-09 | Western, Massachusetts; Connecticut | NPCC | Severe Thunderstorms | 100,000 | Weather |
| 2011-06-09 | Illinois | RFC | Severe Thunderstorms | 169,000 | Weather |
| 2011-06-08 | Fredrickson Substation, Washington | WECC | Vandalism | N/A | Physical Attack |
| 2011-06-07 | Ohio | RFC | Severe Weather | 52,747 | Weather |
| 2011-06-06 | El Paso County, Texas; Dona Ana County, New Mexico | SPP | Load Shed/ Automatic undervoltage relay action | 162,000 | Load Shed |
| 2011-06-05 | Melones, California | WECC | Electrical System Separation (Islanding) | 5,314 | Islanding |
| 2011-06-05 | Houston Metro-Area, Texas | TRE | Severe Thunderstorms | 78,000 | Weather |
| 2011-06-04 | Midway, California | WECC | Vandalism | 420 | Physical Attack |
| 2011-06-02 | Greater Columbia, South Carolina | SERC | Severe Weather | 50,465 | Weather |
| 2011-05-29 | Mid and Southern Lower Peninsula, Michigan | RFC | Severe Weather | 113,000 | Weather |
| 2011-05-26 | Greenwood, Mississippi | SERC | Transmission Level Interruption | 10,000 | Transmission Interruption |
| 2011-05-26 | Central Pennsylvania | RFC | Severe Weather | 120,001 | Weather |
| 2011-05-26 | Southern Balancing Area, Georgia | SERC | Severe Weather | 218,783 | Weather |
| 2011-05-25 | Central Indiana | RFC | Severe Weather | 141,000 | Weather |
| 2011-05-24 | Chicago, Illinois | RFC | Physical Attack | 0 | Physical Attack |
| 2011-05-24 | Central Oklahoma | SPP | Severe Weather | 54,000 | Weather |
| 2011-05-24 | Eastern Virginia | SERC | Severe Weather | 175,000 | Weather |
| 2011-05-23 | St. Louis County, Missouri | SERC | Severe Weather | 70,000 | Weather |
| 2011-05-23 | Central, Indiana | RFC | Severe Weather | 215,387 | Weather |
| 2011-05-22 | Joplin, Sarcoxie, and Wentworth, Missouri | SPP | Severe Weather | 20,000 | Weather |
| 2011-05-21 | Dixie Valley Area, Nevada | WECC | Physical Attack | UNK | Physical Attack |
| 2011-05-13 | Salt Lake, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-05-11 | North Chelsea Substation, New York | NPCC | Vandalism | 0 | Physical Attack |
| 2011-05-11 | Green River, Wyoming | WECC | Vandalism | 0 | Physical Attack |
| 2011-05-11 | Colbyville, Haines Road and Arrowhead Substations, Minnesota | MRO | Vandalism | 0 | Physical Attack |
| 2011-05-11 | Charlotte, North Carolina | SERC | Severe Weather | 71,000 | Weather |
| 2011-05-10 | Upper Peninsula, Michigan | RFC | Generation Inadequacy; Load Shed; Electrical System Separation (Islanding) | 78,213 | Islanding |
| 2011-05-10 | New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2011-05-10 | Kentucky, West Virginia | RFC | Severe Weather | 58,000 | Weather |
| 2011-05-09 | Milton, New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2011-05-09 | Holtwood, Pennsylvania | RFC | Suspected Physical Attack | UNK | Physical Attack |
| 2011-05-08 | New York | NPCC | Vandalism | 0 | Physical Attack |
| 2011-05-06 | Alderwood Substation, Portland, Oregon | WECC | Vandalism | 0 | Physical Attack |
| 2011-05-05 | New Hampshire | NPCC | Vandalism | 0 | Physical Attack |
| 2011-05-04 | Michigan | RFC | Suspected Sabotage | 0 | Physical Attack |
| 2011-05-03 | St. Lawrence Power Dam, New York | NPCC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-05-02 | N. Ogden Substation, Ogden, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-05-02 | West River Substation, New Haven, Connecticut | NPCC | Suspected Physical Attack | 0 | Physical Attack |
| 2011-05-02 | Hawaii | N/A | Severe Weather | 62,000 | Weather |
| 2011-04-28 | Phoenix, Arizona | WECC | Equipment Malfunction | UNK | Equipment |
| 2011-04-28 | Cleveland area, Ohio | RFC | Severe Weather | 86,000 | Weather |
| 2011-04-27 | Ohio, Tennessee, Virginia | SERC | Severe Weather | 69,000 | Weather |
| 2011-04-27 | Alabama, Florida, Georgia, Mississippi | SERC | Severe Weather | 426,640 | Weather |
| 2011-04-27 | Alabama, Georgia, Mississippi, Tennessee | SERC | Severe Weather | 612,000 | Weather |
| 2011-04-26 | Salt Lake City, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-04-26 | Eastern Arkansas | SPP | Severe Weather | 13,000 | Weather |
| 2011-04-26 | Alabama, Georgia, Mississippi, Tennessee | SERC | Severe Weather | 55,000 | Weather |
| 2011-04-26 | Southern Louisiana | SPP | Severe Weather | UNK | Weather |
| 2011-04-25 | Northeast Tennessee | SERC | Equipment Malfunction | UNK | Equipment |
| 2011-04-25 | Arkansas, Louisiana, Mississippi | SPP | Severe Weather | 141,700 | Weather |
| 2011-04-22 | Metro St. Louis area, Missouri | SERC | Severe Weather | 55,000 | Weather |
| 2011-04-21 | Oquirrh Substation, Salt Lake City, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-04-21 | Trenton, Michigan | RFC | Suspicious Activity | UNK | Physical Attack |
| 2011-04-20 | Ruston, Louisiana | SERC | Equipment Malfunction | 11,000 | Equipment |
| 2011-04-20 | Indiana, Kentucky, Ohio | RFC | Severe Weather - High Winds | 165,711 | Weather |
| 2011-04-19 | Graham, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-04-19 | Memphis, Tennessee | SERC | Severe Weather | 64,000 | Weather |
| 2011-04-19 | Illinois | SERC | Severe Weather | 80,000 | Weather |
| 2011-04-19 | Memphis, Tennessee | SERC | Severe Weather | 105,000 | Weather |
| 2011-04-19 | Osceola, Arkansas | SERC | Severe Weather | UNK | Weather |
| 2011-04-16 | Central and Eastern North Carolina | SERC | Severe Weather | 220,000 | Weather |
| 2011-04-11 | Salt Lake City, Utah | WECC | Suspicious Activity | 0 | Physical Attack |
| 2011-04-06 | Felton, Delaware | RFC | Vandalism | 0 | Physical Attack |
| 2011-04-05 | North Carolina, South Carolina | SERC | Severe Weather | 256,000 | Weather |
| 2011-04-04 | Kentucky, West Virginia | RFC | Severe Weather | 52,920 | Weather |
| 2011-04-04 | Memphis, Tennessee | SERC | Severe Weather | 63,000 | Weather |
| 2011-04-04 | Shelby County, Tennessee | SERC | Severe Weather | 63,000 | Weather |
| 2011-04-04 | Southeast Arkansas, Southeast Louisiana, Western Mississippi, Eastern Texas | SERC | Severe Weather | 74,645 | Weather |
| 2011-04-04 | Alabama, Florida, Georgia, Mississippi | SERC | Severe Weather | 303,434 | Weather |
| 2011-04-03 | Unknown | SERC | Suspected Cyber Attack | 0 | Cyber Attack |
| 2011-03-31 | Central and Western Florida | FRCC | Severe Weather | 50,000 | Weather |
| 2011-03-31 | Greater Tampa Bay, Florida | FRCC | Severe Weather | 87,000 | Weather |
| 2011-03-27 | Sonoma and Central Valley, California | WECC | Transmission Level Outage | 165,000 | Transmission Interruption |
| 2011-03-23 | Indiana. Kentucky, Michigan, Ohio, Tennessee, Virginia, West Virginia | RFC | Major Storm | 60,596 | Weather |
| 2011-03-21 | Deerfield, New Hampshire | NPCC | Vandalism | N/A | Physical Attack |
| 2011-03-21 | Southern California | WECC | Major Storm | 54,332 | Weather |
| 2011-03-20 | Los Angeles, California | WECC | Major Storm | 79,000 | Weather |
| 2011-03-19 | Northern and Central California | WECC | Major Storm | 128,000 | Weather |
| 2011-03-18 | Greene County, Ohio | RFC | Vandalism | N/A | Physical Attack |
| 2011-03-17 | Deerfield, New Hampshire | NPCC | Vandalism | N/A | Physical Attack |
| 2011-03-15 | The Woodlands, Texas | TRE | Suspected Physical Attack | N/A | Physical Attack |
| 2011-03-14 | Baltimore, Maryland | RFC | Suspected Cyber Attack | N/A | Cyber Attack |
| 2011-03-13 | Oregon | WECC | Severe Weather | 9,000 | Weather |
| 2011-03-11 | Humboldt and Eureka, California | WECC | Generation Inadequacy/Load Shed | 6,800 | Generation Interruption |
| 2011-03-10 | Texas | TRE | Suspected Physical Attack | N/A | Physical Attack |
| 2011-03-06 | Salt Lake City Region, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-03-01 | Western New York | NPCC | Fuel Supply Deficiency (Coal) | UNK | Fuel Supply Deficiency |
| 2011-02-25 | Salt Lake City, Utah | WECC | Vandalism | 0 | Physical Attack |
| 2011-02-25 | Virginia | SERC | Severe Weather | 50,000 | Weather |
| 2011-02-25 | Northern and Central California | WECC | Winter Storm | 80,000 | Weather |
| 2011-02-25 | Maryland | RFC | Severe Weather | 93,000 | Weather |
| 2011-02-24 | Arkansas | SPP | Electrical System Separation (Islanding) | UNK | Islanding |
| 2011-02-20 | Southern Lower Peninsula, Michigan | RFC | Winter Storm | 160,000 | Weather |
| 2011-02-19 | Harrington, Delaware | RFC | Vandalism | 0 | Physical Attack |
| 2011-02-19 | Philadelphia area, Pennsylvania | RFC | Major Storm | 118,000 | Weather |
| 2011-02-17 | Roseville, California | WECC | Suspected Cyber Attack | 0 | Cyber Attack |
| 2011-02-17 | Northern and Central California | WECC | Major Storm | 80,000 | Weather |
| 2011-02-10 | LaGrande, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-02-09 | University Place, Washington | WECC | Vandalism | 0 | Physical Attack |
| 2011-02-09 | Western Houston, Texas | TRE | Winter Storm | 60,000 | Weather |
| 2011-02-09 | Texas | TRE | Cold Weather Event | N/A | Weather |
| 2011-02-03 | Bowie, Maryland | RFC | Suspected Cyber Attack | 0 | Cyber Attack |
| 2011-02-03 | San Diego area, California | WECC | Fuel Supply Deficiency (Natural Gas) | UNK | Fuel Supply Deficiency |
| 2011-02-03 | Texas | TRE | Generation Inadequacy/Load Shed | 86,013 | Generation Interruption |
| 2011-02-02 | Texas Panhandle, Southeastern New Mexico | SPP | Fuel Supply Deficiency (Natural Gas) | UNK | Fuel Supply Deficiency |
| 2011-02-02 | Central Arizona | WECC | Generation Inadequacy/Load Shed | 69,000 | Generation Interruption |
| 2011-02-02 | Dona Ana and El Paso Counties, Texas and Hudspeth County, New Mexico | WECC | Generation Inadequacy/Load Shed | 178,000 | Generation Interruption |
| 2011-02-02 | Texas | TRE | Generation Inadequacy/Load Shed | 1,069,730 | Generation Interruption |
| 2011-02-02 | Philadelphia area, Pennsylvania | RFC | Winter Storm | 213,000 | Weather |
| 2011-02-01 | Indiana, Ohio | RFC | Winter Storm | 158,013 | Weather |
| 2011-01-31 | Southwestern Ohio and Indiana | RFC | Ice Storm | 272,880 | Weather |
| 2011-01-27 | Central New York | NPCC | Fuel Supply Deficiency (Coal) | N/A | Fuel Supply Deficiency |
| 2011-01-27 | Hockessin, Delaware | RFC | Vandalism | 0 | Physical Attack |
| 2011-01-26 | Carson City, Nevada | WECC | Suspected Telecommunications Attack | 0 | Cyber Attack |
| 2011-01-26 | Michigan | RFC | Vandalism | 0 | Physical Attack |
| 2011-01-26 | Northern Virginia | SERC | Winter Storm | 150,084 | Weather |
| 2011-01-26 | Montgomery and Prince George's County, Maryland and District of Columbia | RFC | Winter Storm | 210,000 | Weather |
| 2011-01-26 | Maryland | RFC | Winter Storm | 234,326 | Weather |
| 2011-01-25 | Newark, Delaware | RFC | Vandalism | 0 | Physical Attack |
| 2011-01-24 | Newman Power Plant, Texas | WECC | Suspicious Activity | 0 | Physical Attack |
| 2011-01-23 | Franklin County, Idaho | WECC | Vandalism | 0 | Physical Attack |
| 2011-01-18 | Whitman, Auburn St Substation, Massachusetts | NPCC | Vandalism | 0 | Physical Attack |
| 2011-01-13 | North Florida | FRCC | Firm System Load Shed | 20,900 | Load Shed |
| 2011-01-12 | Massachusetts | NPCC | Winter Storm | 80,000 | Weather |
| 2010-12-30 | New York | RFC | Fuel Supply Deficiency | N/A | Fuel Supply Deficiency |
| 2010-12-26 | Carolina | SERC | Severe Weather | 42,000 | Weather |
| 2010-12-18 | Redmond, Washington | WECC | Severe Weather | 92,090 | Weather |
| 2010-12-14 | California | WECC | Electrical System Separation - Islanding | 6,635 | Islanding |
| 2010-12-14 | Southern California | WECC | Transmission Equipment/Firm System Load | N/A | Load Shed |
| 2010-12-12 | Southeastern Michigan | RFC | Severe Weather | 60,175 | Weather |
| 2010-12-03 | California | WECC | Electrical System Separation - Islanding | 7,077 | Islanding |
| 2010-11-23 | Northern California | WECC | Electrical System Separation - Islanding | 7,077 | Islanding |
| 2010-11-22 | Puget Sound Region, Washington | WECC | Winter Storm | 123,535 | Weather |
| 2010-11-21 | Northern and Central California | WECC | Winter Storm | 60,000 | Weather |
| 2010-11-15 | Puget Sound Region | WECC | High Winds | 149,256 | Weather |
| 2010-11-13 | Minnesota | MRO | Winter Storm | 60,000 | Weather |
| 2010-11-08 | Maine | NPCC | Snow and High Winds | 60,863 | Weather |
| 2010-11-06 | Northern California | WECC | Electrical System Separation - Islanding | 4 | Islanding |
| 2010-11-04 | Rock Springs, Wyoming | WECC | Transmission Equipment Failure/Interruptible Load Shed | N/A | Transmission Interruption |
| 2010-10-31 | Bakersfield, California | WECC | Firm System Load Loss | N/A | Load Shed |
| 2010-10-27 | Northern California | WECC | Electrical System Separation-Islanding | 2,674 | Islanding |
| 2010-10-27 | Northeast and North Central Wisconsin | MRO | High Winds | 63,000 | Weather |
| 2010-10-27 | Northern Illinois | RFC | High Winds | 127,000 | Weather |
| 2010-10-27 | Michigan's Northerly Lower Peninsula | RFC | High Winds | 285,000 | Weather |
| 2010-10-26 | Minnesota | MRO | High Winds | 70,000 | Weather |
| 2010-10-26 | Northern Illinois | RFC | Thunderstorms | 192,106 | Weather |
| 2010-10-05 | City of Los Angeles, California | WECC | Rain and High Winds | 73,514 | Weather |
| 2010-09-27 | Central and Southern California | WECC | Interruptible Load Shed | N/A | Load Shed |
| 2010-09-22 | Bakersfield, California | WECC | Firm Load Shed | N/A | Load Shed |
| 2010-09-22 | City of Pittsburgh, Pennsylvania | RFC | Thunderstorms | 52,000 | Weather |
| 2010-09-22 | Western Pennsylvania | RFC | Thunderstorms | 82,861 | Weather |
| 2010-09-21 | Central and Southern Michigan | RFC | Thunderstorms | 138,000 | Weather |
| 2010-09-20 | King George County, Virginia | SERC | Low Flying Helicopter | N/A | ? |
| 2010-09-07 | San Antonio, Texas | TRE | Tropical Storm | 340,350 | Weather |
| 2010-09-01 | Pittsburg (Bay Area), California | WECC | Electrical System Separation (Islanding) | 15,000 | Islanding |
| 2010-08-23 | Houston, Texas | TRE | Severe Weather | 81,586 | Weather |
| 2010-08-19 | Southeastern Michigan | RFC | Severe Weather | 80,000 | Weather |
| 2010-08-12 | City of Oshkosh, Wisconsin | MRO | Made Public Appeals | 7,600 | Public Appeal |
| 2010-08-12 | Central Nebraska | SPP | Made Public Appeals | N/A | Public Appeal |
| 2010-08-12 | District of Columbia, Maryland | RFC | Severe Weather | 101,003 | Weather |
| 2010-08-11 | Ohio | RFC | Severe Weather | 57,000 | Weather |
| 2010-08-09 | Upstate New York | RFC | Fuel Supply Defiency | N/A | Fuel Supply Deficiency |
| 2010-08-05 | District of Columbia, Maryland | RFC | Thunderstorms | 76,729 | Weather |
| 2010-08-05 | Northern Virginia | RFC | Thunderstorms | 145,157 | Weather |
| 2010-08-04 | Northern Texas, Eastern New Mexico | SPP | Made Public Appeals | N/A | Public Appeal |
| 2010-08-04 | Western Pennsylvania, Northwestern and Central West Virginia | RFC | Thunderstorms | 11,186 | Weather |
| 2010-08-04 | Ohio, West Virginia, Kentucky | RFC | Severe Weather | 37,000 | Weather |
| 2010-08-02 | Central California | WECC | Fuel Supply Deficiency (Hydro) | N/A | Fuel Supply Deficiency |
| 2010-08-02 | Southern Louisiana | SERC | Made Public Appeals | N/A | Public Appeal |
| 2010-08-02 | Southern Louisiana | SERC | Made Public Appeals | N/A | Public Appeal |
| 2010-08-02 | Southwestern Louisiana | SERC | Made Public Appeals | N/A | Public Appeal |
| 2010-08-02 | Southern Louisiana | SPP | Made Public Appeals | N/A | Public Appeal |
| 2010-07-29 | Virginia | SERC | Thunderstorms | 55,000 | Weather |
| 2010-07-29 | Southern California | WECC | Shed Interruptible Load, Wildfire | N/A | Wildfire |
| 2010-07-29 | Southern California | WECC | Shed Interruptible Load, Wildfire | N/A | Wildfire |
| 2010-07-25 | Northern Virginia | SERC | Severe Weather | 81,000 | Weather |
| 2010-07-25 | Central Maryland | RFC | Severe Weather | 124,000 | Weather |
| 2010-07-25 | Washington, DC Region | RFC | Severe Weather | 297,700 | Weather |
| 2010-07-23 | Northern Utah | WECC | Made Public Appeals | N/A | Public Appeal |
| 2010-07-23 | Southeastern Michigan | RFC | Severe Weather | 82,000 | Weather |
| 2010-07-21 | Connecticut | NPCC | Thunderstorms | 50,100 | Weather |
| 2010-07-17 | Minnesota | MRO | Strong Winds, Tornadoes | 63,000 | Weather |
| 2010-07-15 | Southeastern Michigan | RFC | Severe Weather | 127,534 | Weather |
| 2010-07-07 | York, South Central Pennsylvania | RFC | Loss of Transmission Equipment | 43,903 | Transmission Interruption |
| 2010-07-06 | Newark, DE | RFC | Transformer Outage | 18,400 | Equipment |
| 2010-06-25 | Northern California | WECC | Electrical System Separation | N/A | Islanding |
| 2010-06-24 | Southwestern New Jersey | RFC | Thunderstorms | 150,000 | Weather |
| 2010-06-24 | Southeastern Pennsylvania | RFC | Thunderstorms | 355,000 | Weather |
| 2010-06-23 | Northwest Indiana | RFC | Thunderstorms | 53,000 | Weather |
| 2010-06-23 | Chicago, IL | RFC | Severe Weather | 300,000 | Weather |
| 2010-06-22 | West/Central Arkansas | SERC | Made Public Appeal/Transmission Equipment Failure | 25,159 | Transmission Interruption |
| 2010-06-21 | Cincinnati, OH | RFC | Thunderstorms | 50,636 | Weather |
| 2010-06-18 | Indiana, Michigan | RFC | Severe Weather | 79,000 | Weather |
| 2010-06-18 | Northwest Indiana | RFC | Thunderstorms | 94,345 | Weather |
| 2010-06-18 | Southern Portion of Lower Michigan | RFC | Thunderstorms | 100,000 | Weather |
| 2010-06-18 | Detroit, MI | RFC | Severe Weather | 150,000 | Weather |
| 2010-06-18 | Chicago, IL | RFC | Severe Weather | 400,000 | Weather |
| 2010-06-17 | Eastern Montana | MRO | Electrical System Separation | N/A | Islanding |
| 2010-06-17 | Morgan City, LA | SPP | Made Public Appeal | N/A | Public Appeal |
| 2010-06-17 | Southern Louisiana | SERC | Made Public Appeal | N/A | Public Appeal |
| 2010-06-17 | Southern Louisiana | SERC | Made Public Appeal | N/A | Public Appeal |
| 2010-06-17 | Southwestern Louisiana | SPP | Made Public Appeal | N/A | Public Appeal |
| 2010-06-16 | New York (Rockland and Orange Counties) | NPCC | Voltage Reduction (System Test) | N/A | ? |
| 2010-06-09 | Edenton, NC | SERC | Transmission System Interruption | 4,196 | Transmission Interruption |
| 2010-06-08 | Southeastern Texas | TRE | Thunderstorms | 79,741 | Weather |
| 2010-06-07 | Denver Metropolitan Area | WECC | Firm Load Shed | 31,000 | Load Shed |
| 2010-06-06 | Northern California | WECC | Electric System Separation | 2,650 | Islanding |
| 2010-06-02 | San Antonio, TX | TRE | Severe Weather | 126,000 | Weather |
| 2010-06-01 | Southwestern Indiana | RFC | Firm Load Shed | 1 | Load Shed |
| 2010-05-26 | Maryland, Pennsylvania, West Virginia, Virginia | RFC, SERC | Made Public Appeal - System Drill | N/A | Public Appeal |
| 2010-05-18 | Central California | WECC | Breakers Tripped | N/A | Equipment |
| 2010-05-02 | Tennessee and Mississippi | SERC | Thunderstorms | 50,500 | Weather |
| 2010-04-27 | Rocky Mount, NC | SERC | Transmission System Interruption | 29,376 | Transmission Interruption |
| 2010-04-21 | Iberville, Parish, Louisiana | SERC | Generator Tripped | N/A | Equipment |
| 2010-04-16 | Southwestern Pennsylvania | RFC | Severe Thunderstorms | 120,000 | Weather |
| 2010-03-31 | San Diego and Orange Counties | WECC | Shed Firm Load | 290,000 | Load Shed |
| 2010-03-31 | San Diego | WECC | Shed Firm Load | N/A | Load Shed |
| 2010-03-13 | Connecticut | NPCC | High Winds and Rain | 50,246 | Weather |
| 2010-03-13 | Long Island | NPCC | High Winds and Rain | 153,000 | Weather |
| 2010-03-13 | New York City and Westchester County | NPCC | High Winds and Rain | 173,000 | Weather |
| 2010-03-13 | Southeasten Pennsylvania | RFC | High Winds and rain | 177,528 | Weather |
| 2010-03-13 | Central New Jersey and Northern New Jersey | RFC | High Winds and Flooding | 180,000 | Weather |
| 2010-03-13 | Southern, Central and Northern New Jersey | RFC | High Winds and Rain | 360,000 | Weather |
| 2010-02-25 | New York City | NPCC | Winter Storm | 55,000 | Weather |
| 2010-02-25 | Southeastern New York, Northern New Jersey | NPCC | Winter Storm | 65,000 | Weather |
| 2010-02-25 | Southern Maine and New Hampshire | NPCC | Winter Storm | 509,606 | Weather |
| 2010-02-23 | Upstate New York | NPCC | Winter Storm | 150,000 | Weather |
| 2010-02-19 | San Joaquin Field Division/Bakersfield, CA | WECC | Firm System Load Shed | N/A | Load Shed |
| 2010-02-14 | Western Pennsylvania nd Northeast Central WV | RFC | Winter Storm | 190,000 | Weather |
| 2010-02-12 | East Texas, Western Arkansas, Northern Lousiania | SPP | Winter Storm | 52,999 | Weather |
| 2010-02-11 | Dallas/Fort Worth and East Texas | TRE | Winter Storm | 500,000 | Weather |
| 2010-02-09 | Southeastern Pennsylvania | RFC | Winter Storm | 223,000 | Weather |
| 2010-02-06 | Delmarva Peninsula | RFC | Winter Storm | 58,491 | Weather |
| 2010-02-06 | Virginia, North Carolina | SERC | Winter Storm | 104,736 | Weather |
| 2010-02-05 | Southwestern Pennsylvania | RFC | Winter Storm | 57,000 | Weather |
| 2010-02-05 | North and South Carolina | SERC | Winter Storm | 74,000 | Weather |
| 2010-02-05 | District of Columbia, Prince Georges and Montgomery Co. MD | RFC | Winter Storm | 97,651 | Weather |
| 2010-02-05 | Indiana, Ohio, W. Virginia and Virginia | RFC | Winter Storm | 102,225 | Weather |
| 2010-02-05 | Southern NJ | RFC | Winter Storm | 221,000 | Weather |
| 2010-02-01 | Oklahoma | SPP | Ice Storm/Electrical System Separation | 0 | Weather |
| 2010-01-28 | Oklahoma | SPP | Ice Storm | 68,705 | Weather |
| 2010-01-20 | City of Los Angeles, California | WECC | Severe Storm | 147,223 | Weather |
| 2010-01-19 | San Francisco | WECC | Severe Storm | 30,000 | Weather |
| 2010-01-19 | San Diego and Orange Counties | WECC | Severe Storm | 50,000 | Weather |
| 2010-01-18 | Northern and Central California | WECC | Severe Storm | 1,700,000 | Weather |
| 2010-01-11 | Northern and Central Florida | FRCC/SERC | Interruptible Load Shed/Made Public Appeals | N/A | Load Shed |
| 2010-01-06 | Southwest Louisiana | SERC | Made Public Appeals | N/A | Public Appeal |