| 2021 |
1 |
01/02/2021 10:28 AM |
01/02/2021 10:29 AM |
0 Hours, 1 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Butte County; |
Electrical System Separation (Islanding) where part or parts of power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-System Operations |
8 |
5803 |
| 2021 |
1 |
01/04/2021 10:34 AM |
01/04/2021 10:49 AM |
0 Hours, 15 Minutes |
FirstEnergy Corp |
RF |
Pennsylvania: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
6 |
3825 |
| 2021 |
1 |
01/10/2021 10:44 PM |
01/13/2021 4:00 PM |
65 Hours, 16 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: Anderson County, Angelina County, Dallas County, Freestone County, Henderson County, Houston County, Leon County, Nacogdoches County, Smith County, Tarrant County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
188000 |
| 2021 |
1 |
01/11/2021 5:00 AM |
01/11/2021 2:22 PM |
9 Hours, 22 Minutes |
American Electric Power - (SPP Reliability Region) |
SERC |
Louisiana: Texas: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather/Distribution Interruption |
Unknown |
58000 |
| 2021 |
1 |
01/12/2021 8:30 PM |
. . |
. Hours, . Minutes |
Snohomish County PUD No 1 |
WECC |
Washington: Snohomish County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather/Transmission Interruption |
200 |
62000 |
| 2021 |
1 |
01/12/2021 8:46 PM |
01/13/2021 4:00 PM |
19 Hours, 14 Minutes |
Portland General Electric Co |
WECC |
Oregon: Clackamas County, Multnomah County, Washington County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
94231 |
| 2021 |
1 |
01/12/2021 11:49 PM |
01/14/2021 2:00 PM |
38 Hours, 11 Minutes |
Seattle City Light, Sytem Control Center |
WECC |
Washington: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather/Distribution Interruption |
150 |
70000 |
| 2021 |
1 |
01/12/2021 11:50 PM |
01/15/2021 1:00 PM |
61 Hours, 10 Minutes |
Puget Sound Energy |
WECC |
Washington: Kitsap County, Thurston County, King County, Pierce County, Skagit County, Whatcom County; |
Electrical System Separation (Islanding) where part or parts of power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-Severe Weather |
100 |
320000 |
| 2021 |
1 |
01/13/2021 3:43 AM |
01/13/2021 4:00 PM |
12 Hours, 17 Minutes |
Avista Corp |
WECC |
Washington: Idaho: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
185 |
70417 |
| 2021 |
1 |
01/19/2021 2:48 AM |
01/20/2021 11:41 AM |
32 Hours, 53 Minutes |
Pacific Gas & Electric Co |
WECC |
California: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
411 |
124888 |
| 2021 |
1 |
01/19/2021 9:31 AM |
01/21/2021 2:36 PM |
53 Hours, 5 Minutes |
Southern California Edison Co |
WECC |
California: Kern County, Los Angeles County, Riverside County, San Bernardino County, Ventura County, Orange County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
173746 |
| 2021 |
1 |
01/26/2021 8:49 PM |
01/28/2021 9:14 PM |
48 Hours, 25 Minutes |
Pacific Gas & Electric Co |
WECC |
California: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
841 |
255715 |
| 2021 |
2 |
02/01/2021 11:25 PM |
02/02/2021 1:12 AM |
1 Hours, 47 Minutes |
American Electric Power - Texas |
TRE |
Texas: Kleberg County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
13 |
6102 |
| 2021 |
2 |
02/02/2021 9:25 AM |
02/03/2021 11:38 AM |
26 Hours, 13 Minutes |
Western Area Power Administration - Upper Great Plains Region |
MRO |
South Dakota: Hughes County; |
Electrical System Separation (Islanding) where part or parts of power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-Severe Weather/Transmission Interruption |
5 |
3 |
| 2021 |
2 |
02/02/2021 12:34 PM |
02/02/2021 3:43 PM |
3 Hours, 9 Minutes |
Western Area Power Administration - Upper Great Plains Region |
MRO |
South Dakota: Hughes County; |
Electrical System Separation (Islanding) where part or parts of power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-Severe Weather/Transmission Interruption |
5 |
4 |
| 2021 |
2 |
02/03/2021 2:22 PM |
02/04/2021 10:32 PM |
32 Hours, 10 Minutes |
Montana-Dakota Utilities Co |
MRO |
North Dakota: Logan County, Emmons County, McIntosh County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
7 |
1400 |
| 2021 |
2 |
02/06/2021 6:50 AM |
02/06/2021 2:43 PM |
7 Hours, 53 Minutes |
Duke Energy Midwest |
RF |
Ohio: Kentucky: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
2 |
02/08/2021 7:04 AM |
02/08/2021 2:10 PM |
7 Hours, 6 Minutes |
Minnesota Power |
MRO |
Minnesota: St. Louis County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
2 |
02/09/2021 10:51 AM |
. . |
. Hours, . Minutes |
Duke Energy Progress |
SERC |
North Carolina: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
2 |
02/10/2021 3:00 PM |
02/23/2021 3:00 PM |
312 Hours, 0 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
2000000 |
| 2021 |
2 |
02/11/2021 8:30 AM |
02/22/2021 9:00 AM |
264 Hours, 30 Minutes |
Prairie Power, Inc. |
SERC |
Illinois: Scott County; |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
Unknown |
Unknown |
| 2021 |
2 |
02/11/2021 1:00 PM |
. . |
. Hours, . Minutes |
Sunflower Electric Power Corp |
MRO |
Kansas: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
0 |
0 |
| 2021 |
2 |
02/11/2021 7:21 PM |
02/11/2021 9:20 PM |
1 Hours, 59 Minutes |
Public Service Company of Colorado |
WECC |
Colorado: Morgan County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
2 |
02/12/2021 3:30 PM |
02/22/2021 7:30 AM |
232 Hours, 0 Minutes |
ERCOT |
TRE |
Texas: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
Unknown |
Unknown |
| 2021 |
2 |
02/12/2021 9:00 PM |
02/20/2021 5:15 PM |
188 Hours, 15 Minutes |
Portland General Electric Co |
WECC |
Oregon: Clackamas County, Marion County, Polk County, Multnomah County, Washington County, Yamhill County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
300187 |
| 2021 |
2 |
02/13/2021 8:32 AM |
02/14/2021 3:00 PM |
30 Hours, 28 Minutes |
Duke Energy Carolinas |
SERC |
South Carolina: North Carolina: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
129000 |
| 2021 |
2 |
02/13/2021 9:56 AM |
02/13/2021 11:01 AM |
1 Hours, 5 Minutes |
Bonneville Power Administration |
WECC |
Washington: Lewis County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
164 |
37583 |
| 2021 |
2 |
02/13/2021 1:30 PM |
02/19/2021 9:00 PM |
151 Hours, 30 Minutes |
American Electric Power - (RFC Reliability Region) (8400 Smiths Mill Road, New Albany Ohio 43054) |
RF |
West Virginia: Virginia: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
55097 |
| 2021 |
2 |
02/13/2021 1:30 PM |
02/20/2021 8:00 AM |
162 Hours, 30 Minutes |
American Electric Power - Texas |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/14/2021 5:30 AM |
02/18/2021 10:00 AM |
100 Hours, 30 Minutes |
Oklahoma Municipal Power Authority |
MRO |
Oklahoma: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/14/2021 8:30 AM |
02/19/2021 6:00 PM |
129 Hours, 30 Minutes |
ERCOT |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/14/2021 8:30 AM |
02/19/2021 6:00 PM |
129 Hours, 30 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
7214 |
Unknown |
| 2021 |
2 |
02/14/2021 6:00 PM |
02/16/2021 10:00 PM |
52 Hours, 0 Minutes |
Empire District Electric Co |
SERC |
Missouri: Jasper County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
0 |
0 |
| 2021 |
2 |
02/14/2021 7:05 PM |
. . |
. Hours, . Minutes |
Evergy |
SERC |
Missouri: Kansas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/14/2021 8:00 PM |
02/18/2021 9:28 AM |
85 Hours, 28 Minutes |
Southwest Power Pool, Inc. |
MRO |
North Dakota: South Dakota: Nebraska: Kansas: Oklahoma: Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
3000 |
Unknown |
| 2021 |
2 |
02/14/2021 8:21 PM |
02/18/2021 9:30 AM |
85 Hours, 9 Minutes |
American Electric Power - (SPP Reliability Region) |
SERC |
Arkansas: Louisiana: Texas: Oklahoma: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
461 |
125484 |
| 2021 |
2 |
02/14/2021 8:32 PM |
. . |
. Hours, . Minutes |
Lincoln Electric System |
MRO |
Nebraska: Lancaster County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
0 |
0 |
| 2021 |
2 |
02/15/2021 12:00 AM |
. . |
. Hours, . Minutes |
Entergy Transmission Control Center - North |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
500 |
Unknown |
| 2021 |
2 |
02/15/2021 12:00 AM |
. . |
. Hours, . Minutes |
Entergy - Transmission Operations Engineering |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
500 |
Unknown |
| 2021 |
2 |
02/15/2021 1:20 AM |
. . |
. Hours, . Minutes |
South Texas Electric Coop, Inc |
TRE |
Texas: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
360 |
72000 |
| 2021 |
2 |
02/15/2021 1:20 AM |
02/18/2021 12:02 AM |
70 Hours, 42 Minutes |
CenterPoint Energy Houston Electric, LLC |
TRE |
Texas: Harris County; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
4966 |
1390000 |
| 2021 |
2 |
02/15/2021 1:20 AM |
02/18/2021 12:42 AM |
71 Hours, 22 Minutes |
Magic Valley Electric Cooperative, Inc. |
TRE |
Texas: Hidalgo County, Cameron County; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 1:20 AM |
02/19/2021 9:00 AM |
103 Hours, 40 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
7214 |
Unknown |
| 2021 |
2 |
02/15/2021 1:23 AM |
02/19/2021 5:30 AM |
100 Hours, 7 Minutes |
ERCOT |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 1:54 AM |
02/17/2021 11:56 PM |
70 Hours, 2 Minutes |
TNMP |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
524 |
Unknown |
| 2021 |
2 |
02/15/2021 1:54 AM |
02/19/2021 9:00 AM |
103 Hours, 6 Minutes |
Austin Energy |
TRE |
Texas: Travis County; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
724 |
Unknown |
| 2021 |
2 |
02/15/2021 2:51 AM |
02/19/2021 9:00 AM |
102 Hours, 9 Minutes |
Austin Energy |
TRE |
Texas: Travis County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
219306 |
| 2021 |
2 |
02/15/2021 3:06 AM |
. . |
. Hours, . Minutes |
CPS Energy |
TRE |
Texas: Bexar County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
154000 |
| 2021 |
2 |
02/15/2021 5:00 AM |
02/17/2021 4:00 PM |
59 Hours, 0 Minutes |
Arkansas Electric Coop Corp |
SERC |
Arkansas: Pulaski County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 5:27 AM |
02/18/2021 8:18 AM |
74 Hours, 51 Minutes |
ERCOT |
TRE |
Texas: |
Total generation loss, within one minute of: greater than or equal to 2,000 Megawatts in the Eastern or Western Interconnection or greater than or equal to 1,400 Megawatts in the ERCOT Interconnection.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 5:36 AM |
. . |
. Hours, . Minutes |
Entergy - Transmission Operations Engineering |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
300 |
Unknown |
| 2021 |
2 |
02/15/2021 5:36 AM |
. . |
. Hours, . Minutes |
Entergy Transmission Control Center - South |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
300 |
Unknown |
| 2021 |
2 |
02/15/2021 5:40 AM |
02/16/2021 1:11 PM |
31 Hours, 31 Minutes |
MISO |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
800 |
Unknown |
| 2021 |
2 |
02/15/2021 6:45 AM |
. . |
. Hours, . Minutes |
Entergy Corp |
TRE |
Texas: Arkansas: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 6:51 AM |
02/16/2021 1:19 PM |
30 Hours, 28 Minutes |
Oklahoma Gas & Electric Co |
MRO |
Oklahoma: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
350 |
200000 |
| 2021 |
2 |
02/15/2021 7:00 AM |
02/18/2021 9:00 AM |
74 Hours, 0 Minutes |
Oklahoma Gas & Electric Co |
MRO |
Oklahoma: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
0 |
0 |
| 2021 |
2 |
02/15/2021 7:52 AM |
02/17/2021 2:15 PM |
54 Hours, 23 Minutes |
Bluebonnet Electric Coop, Inc |
TRE |
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; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
107 |
25000 |
| 2021 |
2 |
02/15/2021 8:50 AM |
02/18/2021 9:30 AM |
72 Hours, 40 Minutes |
Sunflower Electric Power Corp |
MRO |
Kansas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 9:10 AM |
. . |
. Hours, . Minutes |
Southwestern Public Service |
TRE |
Texas: Randall County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
0 |
0 |
| 2021 |
2 |
02/15/2021 10:00 AM |
. . |
. Hours, . Minutes |
Lincoln Electric System |
MRO |
Nebraska: Lancaster County; |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
613 |
Unknown |
| 2021 |
2 |
02/15/2021 10:24 AM |
02/18/2021 9:52 AM |
71 Hours, 28 Minutes |
Lubbock Power & Light |
TRE |
Texas: Lubbock County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
116 |
29942 |
| 2021 |
2 |
02/15/2021 12:18 PM |
02/15/2021 1:22 PM |
1 Hours, 4 Minutes |
Evergy |
SERC |
Missouri: Kansas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 1:00 PM |
02/20/2021 10:00 AM |
117 Hours, 0 Minutes |
Southwestern Public Service Company |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
Unknown |
175000 |
| 2021 |
2 |
02/15/2021 2:00 PM |
02/15/2021 6:00 PM |
4 Hours, 0 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 3:00 PM |
02/19/2021 10:00 AM |
91 Hours, 0 Minutes |
Cleco Power LLC |
SERC |
Louisiana: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 5:00 PM |
02/15/2021 10:59 PM |
5 Hours, 59 Minutes |
Cooperative Energy |
SERC |
Mississippi: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 6:00 PM |
02/15/2021 11:55 PM |
5 Hours, 55 Minutes |
Entergy Services, Inc. |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 6:00 PM |
02/15/2021 11:59 PM |
5 Hours, 59 Minutes |
Entergy Services, Inc. |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 6:00 PM |
02/15/2021 11:59 PM |
5 Hours, 59 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
Unknown |
Unknown |
| 2021 |
2 |
02/15/2021 7:48 PM |
02/18/2021 10:30 AM |
62 Hours, 42 Minutes |
Oklahoma Municipal Power Authority |
MRO |
Oklahoma: Kay County; |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
0 |
Unknown |
| 2021 |
2 |
02/16/2021 1:00 AM |
02/16/2021 9:28 PM |
20 Hours, 28 Minutes |
American Electric Power - (RFC Reliability Region) (8400 Smiths Mill Road, New Albany Ohio 43054) |
SERC |
Kentucky: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
54167 |
| 2021 |
2 |
02/16/2021 4:26 AM |
. . |
. Hours, . Minutes |
Entergy Transmission Control Center - South |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
300 |
Unknown |
| 2021 |
2 |
02/16/2021 5:30 AM |
02/16/2021 2:00 PM |
8 Hours, 30 Minutes |
Midcontinent Independent System Operator |
SERC |
Louisiana: Texas: Illinois: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
1420 |
Unknown |
| 2021 |
2 |
02/16/2021 6:10 AM |
. . |
. Hours, . Minutes |
Ameren Illinois Company |
SERC |
Missouri: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather/Transmission Interruption |
130 |
Unknown |
| 2021 |
2 |
02/16/2021 6:24 AM |
02/16/2021 10:41 AM |
4 Hours, 17 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-System Operations |
100 |
18150 |
| 2021 |
2 |
02/16/2021 6:48 AM |
. . |
. Hours, . Minutes |
Entergy Transmission Control Center - South |
SERC |
Louisiana: Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
402 |
Unknown |
| 2021 |
2 |
02/16/2021 6:48 AM |
. . |
. Hours, . Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
360 |
Unknown |
| 2021 |
2 |
02/16/2021 7:03 AM |
02/20/2021 10:00 PM |
110 Hours, 57 Minutes |
Evergy |
MRO |
Kansas: Missouri: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
Unknown |
222000 |
| 2021 |
2 |
02/16/2021 7:17 AM |
02/16/2021 10:08 AM |
2 Hours, 51 Minutes |
Southwestern Public Service |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
168 |
840000 |
| 2021 |
2 |
02/16/2021 7:20 AM |
02/16/2021 10:02 AM |
2 Hours, 42 Minutes |
Omaha Public Power District |
MRO |
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; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
126 |
81100 |
| 2021 |
2 |
02/16/2021 7:22 AM |
02/16/2021 8:00 AM |
0 Hours, 38 Minutes |
Cleco Power LLC |
SERC |
Louisiana: Allen Parish, St. Landry Parish, Evangeline Parish; |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
153 |
Unknown |
| 2021 |
2 |
02/16/2021 9:31 AM |
02/16/2021 10:27 AM |
0 Hours, 56 Minutes |
Nebraska Public Power District |
MRO |
Nebraska: Custer County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
31 |
Unknown |
| 2021 |
2 |
02/16/2021 4:40 PM |
02/20/2021 12:00 AM |
79 Hours, 20 Minutes |
Ameren Illinois Company |
SERC |
Missouri: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 5:35 PM |
02/17/2021 12:00 AM |
6 Hours, 25 Minutes |
Lafayette Public Power Auth |
SERC |
Louisiana: Lafayette Parish; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 5:35 PM |
02/17/2021 12:00 AM |
6 Hours, 25 Minutes |
Cooperative Energy |
SERC |
Mississippi: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 6:19 PM |
. . |
. Hours, . Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Arkansas: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 6:35 PM |
02/17/2021 1:00 AM |
6 Hours, 25 Minutes |
Entergy Services, Inc. |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Fuel Supply Deficiency |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 6:35 PM |
02/17/2021 1:00 AM |
6 Hours, 25 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
Unknown |
Unknown |
| 2021 |
2 |
02/16/2021 7:40 PM |
02/17/2021 1:00 AM |
5 Hours, 20 Minutes |
Entergy Services, Inc. |
TRE |
Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
538 |
Unknown |
| 2021 |
2 |
02/16/2021 7:43 PM |
02/16/2021 9:41 PM |
1 Hours, 58 Minutes |
Midcontinent Independent System Operator |
SERC |
Louisiana: Arkansas: Texas: Mississippi: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
700 |
Unknown |
| 2021 |
2 |
02/17/2021 9:00 AM |
02/19/2021 9:00 AM |
48 Hours, 0 Minutes |
Sunflower Electric Power Corp |
MRO |
Kansas: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
Unknown |
Unknown |
| 2021 |
2 |
02/17/2021 10:30 AM |
02/17/2021 6:04 PM |
7 Hours, 34 Minutes |
Duke Energy Progress |
SERC |
North Carolina: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
2 |
02/17/2021 5:00 PM |
02/17/2021 10:00 PM |
5 Hours, 0 Minutes |
Lafayette Public Power Auth |
SERC |
Louisiana: Lafayette Parish; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
400 |
67000 |
| 2021 |
2 |
02/17/2021 5:00 PM |
02/17/2021 10:00 PM |
5 Hours, 0 Minutes |
Cooperative Energy |
SERC |
Mississippi: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/17/2021 6:00 PM |
02/17/2021 11:00 PM |
5 Hours, 0 Minutes |
Entergy Services, Inc. |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
Unknown |
Unknown |
| 2021 |
2 |
02/17/2021 6:00 PM |
02/17/2021 11:00 PM |
5 Hours, 0 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
Unknown |
Unknown |
| 2021 |
2 |
02/19/2021 6:48 AM |
. . |
. Hours, . Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: Texas: |
Firm load shedding of 100 Megawatts or more implemented under emergency operational policy.-Severe Weather |
402 |
Unknown |
| 2021 |
3 |
03/01/2021 10:45 PM |
03/02/2021 6:35 PM |
19 Hours, 50 Minutes |
ISO New England |
NPCC |
Connecticut: Massachusetts: New Hampshire: Maine: Rhode Island: Vermont: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
69260 |
| 2021 |
3 |
03/06/2021 3:21 AM |
03/06/2021 4:07 AM |
0 Hours, 46 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Tuolumne County; |
Electrical System Separation (Islanding) where part or parts of power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-Severe Weather |
22 |
24000 |
| 2021 |
3 |
03/17/2021 6:15 AM |
03/18/2021 12:00 PM |
29 Hours, 45 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: Dallas County, Tarrant County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
148000 |
| 2021 |
3 |
03/17/2021 6:27 AM |
03/17/2021 8:27 AM |
2 Hours, 0 Minutes |
FirstEnergy Corp |
RF |
Pennsylvania: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
43 |
7381 |
| 2021 |
3 |
03/29/2021 11:06 AM |
. . |
. Hours, . Minutes |
ISO New England |
NPCC |
Connecticut: Massachusetts: Maine: Vermont: Rhode Island: New Hampshire: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
70000 |
| 2021 |
3 |
03/30/2021 4:18 PM |
03/30/2021 8:21 PM |
4 Hours, 3 Minutes |
American Electric Power - Texas |
TRE |
Texas: Hidalgo County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
4 |
04/13/2021 4:49 PM |
04/13/2021 8:30 PM |
3 Hours, 41 Minutes |
ERCOT |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
0 |
0 |
| 2021 |
4 |
04/21/2021 8:31 PM |
04/21/2021 9:35 PM |
1 Hours, 4 Minutes |
Northern States Power Co |
MRO |
Minnesota: Dakota County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
4 |
04/22/2021 5:15 AM |
. . |
. Hours, . Minutes |
California Department of Water Resources |
WECC |
California: |
Fuel supply emergencies that could impact electric power system adequacy or reliability.-Fuel Supply Deficiency |
0 |
0 |
| 2021 |
4 |
04/24/2021 9:00 PM |
04/25/2021 10:43 AM |
13 Hours, 43 Minutes |
Southern Company |
SERC |
Alabama: Calhoun County; Georgia: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
137 |
18860 |
| 2021 |
5 |
05/04/2021 3:45 PM |
05/05/2021 10:00 AM |
18 Hours, 15 Minutes |
Entergy Corp |
SERC |
Arkansas: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
104027 |
| 2021 |
5 |
05/04/2021 6:06 PM |
05/05/2021 5:48 PM |
23 Hours, 42 Minutes |
Southern Company |
SERC |
Mississippi: Alabama: Georgia: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
175 |
24457 |
| 2021 |
5 |
05/06/2021 5:00 PM |
05/06/2021 5:15 PM |
0 Hours, 15 Minutes |
Empire District Electric Co |
SERC |
Missouri: Jasper County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
0 |
0 |
| 2021 |
5 |
05/18/2021 11:25 PM |
05/19/2021 8:30 PM |
21 Hours, 5 Minutes |
CenterPoint Energy |
TRE |
Texas: Harris County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
125000 |
| 2021 |
5 |
05/20/2021 10:06 AM |
05/20/2021 1:45 PM |
3 Hours, 39 Minutes |
Florida Power & Light |
SERC |
Florida: Brevard County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
35000 |
| 2021 |
5 |
05/27/2021 6:51 PM |
05/28/2021 3:56 PM |
21 Hours, 5 Minutes |
Southern California Edison Co |
WECC |
California: Nevada: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
5 |
05/28/2021 9:24 PM |
05/28/2021 9:25 PM |
0 Hours, 1 Minutes |
JEA |
SERC |
Florida: Duval County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
1850 |
10000 |
| 2021 |
6 |
06/06/2021 2:57 PM |
06/06/2021 4:00 PM |
1 Hours, 3 Minutes |
Duke Energy Midwest |
RF |
Indiana: Clay County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
Unknown |
0 |
| 2021 |
6 |
06/07/2021 1:26 PM |
06/07/2021 1:27 PM |
0 Hours, 1 Minutes |
Vistra Energy |
TRE |
Texas: Somervell County, Ellis County; |
Total generation loss, within one minute of: greater than or equal to 2,000 Megawatts in the Eastern or Western Interconnection or greater than or equal to 1,400 Megawatts in the ERCOT Interconnection.-Generation Inadequacy |
1435 |
0 |
| 2021 |
6 |
06/07/2021 10:27 PM |
06/08/2021 12:33 AM |
2 Hours, 6 Minutes |
Western Area Power Administration - Upper Great Plains Region |
MRO |
Minnesota: North Dakota: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Severe Weather/Transmission Interruption |
23 |
1 |
| 2021 |
6 |
06/10/2021 10:28 PM |
06/10/2021 11:07 PM |
0 Hours, 39 Minutes |
Board of Public Utilities, Kansas City |
MRO |
Kansas: Wyandotte County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
90 |
9800 |
| 2021 |
6 |
06/11/2021 3:26 AM |
06/11/2021 3:48 AM |
0 Hours, 22 Minutes |
Western Area Power Administration - Upper Great Plains Region - (NCR01036) |
MRO |
South Dakota: Brown County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Severe Weather/Transmission Interruption |
0 |
0 |
| 2021 |
6 |
06/14/2021 12:15 PM |
06/18/2021 7:00 PM |
102 Hours, 45 Minutes |
ERCOT |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
Unknown |
Unknown |
| 2021 |
6 |
06/14/2021 12:55 PM |
06/18/2021 7:00 PM |
102 Hours, 5 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-System Operations |
Unknown |
Unknown |
| 2021 |
6 |
06/16/2021 10:40 AM |
06/16/2021 10:43 AM |
0 Hours, 3 Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: West Baton Rouge Parish; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
7 |
1841 |
| 2021 |
6 |
06/19/2021 6:54 PM |
06/19/2021 9:01 PM |
2 Hours, 7 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Alameda County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-System Operations |
93 |
51806 |
| 2021 |
6 |
06/21/2021 5:14 AM |
06/21/2021 7:00 PM |
13 Hours, 46 Minutes |
Detroit Edison Co |
RF |
Michigan: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
151852 |
| 2021 |
6 |
06/24/2021 3:34 AM |
06/24/2021 5:07 AM |
1 Hours, 33 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Plumas County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system.-Transmission Interruption |
36 |
7621 |
| 2021 |
6 |
06/28/2021 11:22 AM |
. . |
. Hours, . Minutes |
Duke Energy Progress |
SERC |
North Carolina: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
6 |
06/28/2021 1:20 PM |
. . |
. Hours, . Minutes |
Avista Corp |
WECC |
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; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System.-Severe Weather |
44 |
Unknown |
| 2021 |
6 |
06/29/2021 4:00 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Oakland County, Macomb County, Wayne County; |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
53000 |
| 2021 |
6 |
06/30/2021 6:50 PM |
. . |
. Hours, . Minutes |
ISO New England |
NPCC |
Connecticut: Massachusetts: Rhode Island: Vermont: New Hampshire: Maine: |
Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather |
Unknown |
53103 |
| 2021 |
7 |
07/06/2021 7:41 PM |
07/06/2021 9:50 PM |
2 Hours, 9 Minutes |
Jersey Central Power & Lt Co |
RF |
Ohio: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
136827 |
| 2021 |
7 |
07/06/2021 7:41 PM |
07/06/2021 9:50 PM |
2 Hours, 9 Minutes |
Jersey Central Power & Lt Co |
RF |
Ohio: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
136827 |
| 2021 |
7 |
07/07/2021 3:30 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Macomb County, Oakland County, Monroe County, Livingston County, St. Clair County, Washtenaw County, Wayne County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
90000 |
| 2021 |
7 |
07/07/2021 3:30 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Macomb County, Oakland County, Monroe County, Livingston County, St. Clair County, Washtenaw County, Wayne County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
90000 |
| 2021 |
7 |
07/10/2021 12:00 AM |
07/11/2021 4:00 PM |
40 Hours, 0 Minutes |
Omaha Public Power District |
MRO |
Nebraska: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
188000 |
| 2021 |
7 |
07/10/2021 12:00 AM |
07/11/2021 4:00 PM |
40 Hours, 0 Minutes |
Omaha Public Power District |
MRO |
Nebraska: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
188000 |
| 2021 |
7 |
07/10/2021 12:30 AM |
07/10/2021 5:00 AM |
4 Hours, 30 Minutes |
Southwest Power Pool, Inc. |
MRO/SERC |
Missouri: Nebraska: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
212500 |
| 2021 |
7 |
07/10/2021 12:30 AM |
07/10/2021 5:00 AM |
4 Hours, 30 Minutes |
Southwest Power Pool, Inc. |
MRO/SERC |
Nebraska: Missouri: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
211500 |
| 2021 |
7 |
07/10/2021 12:30 AM |
07/10/2021 5:00 AM |
4 Hours, 30 Minutes |
Southwest Power Pool, Inc. |
MRO/SERC |
Missouri: Nebraska: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
212500 |
| 2021 |
7 |
07/10/2021 12:30 AM |
07/10/2021 5:00 AM |
4 Hours, 30 Minutes |
Southwest Power Pool, Inc. |
MRO/SERC |
Nebraska: Missouri: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmisison Interruption |
Unknown |
211500 |
| 2021 |
7 |
07/10/2021 1:55 AM |
07/10/2021 1:56 AM |
0 Hours, 1 Minutes |
Ameren Illinois Company |
SERC |
Missouri: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
52000 |
| 2021 |
7 |
07/10/2021 1:55 AM |
07/10/2021 1:56 AM |
0 Hours, 1 Minutes |
Ameren Illinois Company |
SERC |
Missouri: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
52000 |
| 2021 |
7 |
07/14/2021 2:15 PM |
07/14/2021 2:16 PM |
0 Hours, 1 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Plumas County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather/Transmisison Interruption |
35 |
11000 |
| 2021 |
7 |
07/14/2021 2:15 PM |
07/14/2021 2:16 PM |
0 Hours, 1 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Plumas County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather/Transmisison Interruption |
35 |
11000 |
| 2021 |
7 |
07/21/2021 2:45 PM |
07/22/2021 12:00 PM |
21 Hours, 15 Minutes |
Exelon Corporation/PECO |
RF |
Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
81503 |
| 2021 |
7 |
07/21/2021 2:45 PM |
07/22/2021 12:00 PM |
21 Hours, 15 Minutes |
Exelon Corporation/PECO |
RF |
Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
81503 |
| 2021 |
7 |
07/23/2021 8:20 AM |
07/23/2021 10:45 AM |
2 Hours, 25 Minutes |
Dominion Energy VA |
RF/SERC |
Virginia: West Virginia: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-System Operations |
0 |
0 |
| 2021 |
7 |
07/23/2021 8:20 AM |
07/23/2021 10:45 AM |
2 Hours, 25 Minutes |
Dominion Energy VA |
RF/SERC |
Virginia: West Virginia: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-System Operations |
0 |
0 |
| 2021 |
7 |
07/24/2021 8:30 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Wayne County, Oakland County, Livingston County, Macomb County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
225949 |
| 2021 |
7 |
07/24/2021 8:30 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Wayne County, Oakland County, Livingston County, Macomb County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
225949 |
| 2021 |
7 |
07/28/2021 12:54 PM |
07/28/2021 3:42 PM |
2 Hours, 48 Minutes |
Central Maine Power Co |
NPCC |
Maine: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-System Operations |
0 |
0 |
| 2021 |
7 |
07/28/2021 12:54 PM |
07/28/2021 3:42 PM |
2 Hours, 48 Minutes |
Central Maine Power Co |
NPCC |
Maine: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-System Operations |
0 |
0 |
| 2021 |
7 |
07/30/2021 8:02 AM |
07/30/2021 9:34 AM |
1 Hours, 32 Minutes |
WEC Energy Group (WEPCO, WPSC, UMERC, WEP-MIUP) |
MRO |
Wisconsin: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-Cyber Event |
0 |
0 |
| 2021 |
7 |
07/30/2021 8:02 AM |
07/30/2021 9:34 AM |
1 Hours, 32 Minutes |
WEC Energy Group (WEPCO, WPSC, UMERC, WEP-MIUP) |
MRO |
Wisconsin: |
Complete loss of monitoring or control capability at its staffed Bulk Electric System control center for 30 continuous minutes or more.-Cyber Event |
0 |
0 |
| 2021 |
8 |
08/01/2021 11:37 PM |
08/02/2021 12:00 AM |
0 Hours, 23 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Humboldt County, Trinity County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
95 |
65888 |
| 2021 |
8 |
08/02/2021 12:18 AM |
08/02/2021 10:47 AM |
10 Hours, 29 Minutes |
LCRA TSC |
TRE |
Texas: Hays County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Severe Weather/Transmission Interruption |
24 |
9400 |
| 2021 |
8 |
08/02/2021 6:23 AM |
08/02/2021 3:55 PM |
9 Hours, 32 Minutes |
LCRA TSC |
TRE |
Texas: Hays County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Severe Weather/Transmission Interruption |
43 |
19000 |
| 2021 |
8 |
08/03/2021 4:35 AM |
08/03/2021 5:28 AM |
0 Hours, 53 Minutes |
Bonneville Power Administration |
WECC |
Oregon: Linn County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
4 |
Unknown |
| 2021 |
8 |
08/10/2021 8:00 PM |
. . |
. Hours, . Minutes |
WEC Energy Group (WEPCO, WPSC, UMERC, WEP-MIUP) |
RF/SERC |
Wisconsin: Waukesha County, Milwaukee County, Kenosha County, Racine County, Washington County, Ozaukee County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
233000 |
| 2021 |
8 |
08/10/2021 8:30 PM |
08/11/2021 7:00 PM |
22 Hours, 30 Minutes |
ComEd |
RF/SERC |
Illinois: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
318761 |
| 2021 |
8 |
08/10/2021 10:30 PM |
08/13/2021 4:38 PM |
66 Hours, 8 Minutes |
Consumers Energy Co |
RF |
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 |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
372600 |
| 2021 |
8 |
08/11/2021 3:35 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Huron County, Macomb County, Lapeer County, Macomb County, Monroe County, Oakland County, St. Clair County, Tuscola County, Wayne County, Washtenaw County, Livingston County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
700000 |
| 2021 |
8 |
08/11/2021 7:12 PM |
08/11/2021 9:49 PM |
2 Hours, 37 Minutes |
Cleveland Electric Illum Co |
RF |
Ohio: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
92109 |
| 2021 |
8 |
08/12/2021 6:57 PM |
08/13/2021 6:00 AM |
11 Hours, 3 Minutes |
Ameren Missouri |
RF/SERC |
Illinois: Missouri: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
101000 |
| 2021 |
8 |
08/17/2021 7:15 PM |
08/18/2021 5:45 PM |
22 Hours, 30 Minutes |
Pacific Gas & Electric Co |
WECC |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
234 |
71000 |
| 2021 |
8 |
08/21/2021 10:14 AM |
08/21/2021 10:52 AM |
0 Hours, 38 Minutes |
Idaho Power Company |
WECC |
Idaho: Elmore County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
0 |
418 |
| 2021 |
8 |
08/22/2021 12:11 PM |
08/23/2021 4:30 PM |
28 Hours, 19 Minutes |
ISO New England |
NPCC |
Connecticut: Massachusetts: Maine: Rhode Island: Vermont: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
28134 |
| 2021 |
8 |
08/24/2021 5:00 PM |
08/26/2021 2:07 PM |
45 Hours, 7 Minutes |
Consumers Energy Co |
RF |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
84987 |
| 2021 |
8 |
08/24/2021 9:37 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
Michigan: Huron County, Lapeer County, Macomb County, Monroe County, Oakland County, St. Clair County, Wayne County, Washtenaw County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
65000 |
| 2021 |
8 |
08/29/2021 9:32 AM |
08/29/2021 9:32 PM |
12 Hours, 0 Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: Pointe Coupee Parish; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
Unknown |
Unknown |
| 2021 |
8 |
08/29/2021 11:30 AM |
. . |
. Hours, . Minutes |
Entergy Corp |
SERC |
Louisiana: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
Unknown |
| 2021 |
8 |
08/29/2021 5:53 PM |
. . |
. Hours, . Minutes |
Entergy Transmission Control Center - North |
SERC |
Louisiana: |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
Unknown |
Unknown |
| 2021 |
8 |
08/29/2021 6:00 PM |
09/03/2021 1:41 PM |
115 Hours, 41 Minutes |
Cleco Power LLC |
SERC |
Louisiana: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
91315 |
| 2021 |
8 |
08/29/2021 6:04 PM |
08/31/2021 10:36 PM |
52 Hours, 32 Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: St. Charles Parish; |
Complete loss of off-site power (LOOP) affecting a nuclear generating station per the Nuclear Plant Interface Requirements.-Severe Weather |
Unknown |
Unknown |
| 2021 |
8 |
08/29/2021 8:25 PM |
. . |
. Hours, . Minutes |
Consolidated Edison of New York, Inc. |
NPCC |
New York: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
796 |
0 |
| 2021 |
8 |
08/29/2021 10:39 PM |
09/03/2021 8:38 AM |
105 Hours, 59 Minutes |
Louisiana Generating LLC |
SERC |
Louisiana: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
50000 |
| 2021 |
9 |
09/01/2021 5:30 PM |
09/02/2021 2:00 AM |
8 Hours, 30 Minutes |
Exelon Corporation/PECO |
RF |
Pennsylvania: Bucks County, Chester County, Delaware County, Montgomery County, Philadelphia County, York County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
252740 |
| 2021 |
9 |
09/07/2021 5:30 PM |
09/09/2021 9:00 AM |
39 Hours, 30 Minutes |
Consumers Energy |
RF |
Michigan: Osceola County, Kalamazoo County, Van Buren County, Saginaw County, Arenac County, Lake County, Clare County, Mecosta County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
80000 |
| 2021 |
9 |
09/07/2021 8:00 PM |
09/09/2021 7:00 AM |
35 Hours, 0 Minutes |
Detroit Edison Co |
RF |
Michigan: Wayne County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
60000 |
| 2021 |
9 |
09/08/2021 12:15 PM |
09/08/2021 12:38 PM |
0 Hours, 23 Minutes |
Western Area Power Administration - Upper Great Plains Region - (NCR01036) |
MRO |
North Dakota: Cass County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
37 |
1 |
| 2021 |
9 |
09/09/2021 5:00 PM |
09/09/2021 8:00 PM |
3 Hours, 0 Minutes |
NV Energy |
WECC |
Nevada: Clark County, Washoe County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System-System Operations |
8000 |
1300000 |
| 2021 |
9 |
09/10/2021 1:55 AM |
09/10/2021 2:04 AM |
0 Hours, 9 Minutes |
Duke Energy Florida |
SERC |
Florida: Citrus County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Severe Weather |
75 |
Unknown |
| 2021 |
9 |
09/10/2021 7:20 AM |
09/10/2021 9:05 AM |
1 Hours, 45 Minutes |
Pacific Gas and Electric |
WECC |
California: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
89 |
59649 |
| 2021 |
9 |
09/10/2021 11:17 AM |
09/10/2021 11:19 AM |
0 Hours, 2 Minutes |
Western Area Power Administration - Upper Great Plains Region - (NCR01036) |
MRO |
North Dakota: McKenzie County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
6 |
1 |
| 2021 |
9 |
09/13/2021 12:18 PM |
09/13/2021 1:15 PM |
0 Hours, 57 Minutes |
Bonneville Power Administration |
WECC |
Washington: Skagit County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
9 |
09/13/2021 6:00 PM |
09/14/2021 12:49 AM |
6 Hours, 49 Minutes |
CenterPoint Energy |
TRE |
Texas: Harris County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
66589 |
| 2021 |
9 |
09/13/2021 11:59 PM |
. . |
. Hours, . Minutes |
CenterPoint Energy |
TRE |
Texas: Harris County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
204280 |
| 2021 |
9 |
09/14/2021 12:35 AM |
09/18/2021 7:20 PM |
114 Hours, 45 Minutes |
CenterPoint Energy |
TRE |
Texas: Harris County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
1905 |
705415 |
| 2021 |
9 |
09/14/2021 7:36 AM |
09/15/2021 1:48 AM |
18 Hours, 12 Minutes |
ERCOT |
TRE |
Texas: |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
0 |
Unknown |
| 2021 |
9 |
09/14/2021 7:52 AM |
09/14/2021 10:44 PM |
14 Hours, 52 Minutes |
ERCOT |
TRE |
Texas: |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
0 |
Unknown |
| 2021 |
9 |
09/16/2021 2:49 PM |
09/16/2021 8:02 PM |
5 Hours, 13 Minutes |
American Electric Power - (SPP Reliability Region) |
MRO/SERC |
Oklahoma: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
100 |
4000 |
| 2021 |
9 |
09/16/2021 2:49 PM |
09/16/2021 8:02 PM |
5 Hours, 13 Minutes |
American Electric Power - (SPP Reliability Region) |
MRO/SERC |
Oklahoma: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
100 |
4000 |
| 2021 |
9 |
09/17/2021 3:00 AM |
09/18/2021 10:00 PM |
43 Hours, 0 Minutes |
Northern States Power Co |
MRO |
Minnesota: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
82000 |
| 2021 |
9 |
09/17/2021 11:00 PM |
09/19/2021 12:00 PM |
37 Hours, 0 Minutes |
Puget Sound Energy |
WECC |
Washington: Pierce County, Whatcom County, Skagit County, King County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather/Transmission Interruption |
Unknown |
87000 |
| 2021 |
9 |
09/22/2021 5:17 PM |
. . |
. Hours, . Minutes |
Detroit Edison Co |
RF |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
136000 |
| 2021 |
9 |
09/28/2021 1:44 PM |
09/28/2021 1:56 PM |
0 Hours, 12 Minutes |
Gridforce Energy Management LLC |
SERC |
Kentucky: Henderson County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Transmission Interruption |
20 |
5000 |
| 2021 |
10 |
10/10/2021 10:15 PM |
10/12/2021 5:00 PM |
42 Hours, 45 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: Collin County, Dallas County, Denton County, Ellis County, Hunt County, Johnson County, Palo Pinto County, Tarrant County, Wichita County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
110000 |
| 2021 |
10 |
10/11/2021 2:22 PM |
10/11/2021 8:30 PM |
6 Hours, 8 Minutes |
Pacific Gas & Electric Co |
WECC |
California: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
126 |
84000 |
| 2021 |
10 |
10/16/2021 2:16 PM |
10/16/2021 6:41 PM |
4 Hours, 25 Minutes |
Bonneville Power Administration |
WECC |
Oregon: Lane County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
Unknown |
Unknown |
| 2021 |
10 |
10/19/2021 3:34 PM |
10/19/2021 4:26 PM |
0 Hours, 52 Minutes |
FirstEnergy Corp |
RF |
Ohio: Summit County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
42 |
1 |
| 2021 |
10 |
10/24/2021 7:00 AM |
10/26/2021 9:30 PM |
62 Hours, 30 Minutes |
Puget Sound Energy |
WECC |
Washington: King County, Pierce County, Skagit County, Thurston County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
233000 |
| 2021 |
10 |
10/24/2021 8:55 AM |
10/25/2021 6:15 PM |
33 Hours, 20 Minutes |
Pacific Gas & Electric Co |
WECC |
California: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
116 |
59000 |
| 2021 |
10 |
10/27/2021 2:25 AM |
10/29/2021 8:37 AM |
54 Hours, 12 Minutes |
ISO New England |
NPCC |
Connecticut: Maine: Massachusetts: New Hampshire: Rhode Island: Vermont: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
169000 |
| 2021 |
10 |
10/27/2021 5:57 PM |
10/28/2021 4:49 PM |
22 Hours, 52 Minutes |
Entergy - Transmission Operations Engineering |
SERC |
Louisiana: Ascension Parish; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
0 |
0 |
| 2021 |
10 |
10/28/2021 12:47 PM |
10/28/2021 1:05 PM |
0 Hours, 18 Minutes |
Western Area Power Administration - Upper Great Plains Region - (NCR01036) |
WECC |
Montana: Valley County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
20 |
0 |
| 2021 |
10 |
10/28/2021 2:15 PM |
10/30/2021 8:00 AM |
41 Hours, 45 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
250000 |
| 2021 |
10 |
10/28/2021 2:45 PM |
10/29/2021 8:30 PM |
29 Hours, 45 Minutes |
CenterPoint Energy |
TRE |
Texas: Harris County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
130000 |
| 2021 |
11 |
11/04/2021 9:34 PM |
11/04/2021 10:57 PM |
1 Hours, 23 Minutes |
Western Area Power Administration - Upper Great Plains Region - (NCR05467) |
WECC |
Montana: Hill County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
44 |
Unknown |
| 2021 |
11 |
11/08/2021 10:53 PM |
11/08/2021 11:33 PM |
0 Hours, 40 Minutes |
Puget Sound Energy |
WECC |
Washington: King County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-System Operations |
9 |
Unknown |
| 2021 |
11 |
11/09/2021 6:00 PM |
11/09/2021 8:00 PM |
2 Hours, 0 Minutes |
Clarksdale Public Utilities |
SERC |
Mississippi: Coahoma County; |
Public appeal to reduce the use of electricity for purposes of maintaining the continuity of the Bulk Electric System-System Operations |
Unknown |
Unknown |
| 2021 |
11 |
11/10/2021 9:49 AM |
11/10/2021 10:05 AM |
0 Hours, 16 Minutes |
Consolidated Edison of New York, Inc. |
NPCC |
New York: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
11 |
11/10/2021 9:19 PM |
11/11/2021 1:19 AM |
4 Hours, 0 Minutes |
Entergy - Transmission Operations Engineering |
TRE |
Texas: Brazos County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
11 |
11/11/2021 5:52 AM |
11/11/2021 6:09 AM |
0 Hours, 17 Minutes |
Entergy - Transmission Operations Engineering |
TRE |
Texas: Montgomery County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
67 |
Unknown |
| 2021 |
11 |
11/15/2021 11:00 AM |
11/17/2021 6:00 AM |
43 Hours, 0 Minutes |
Puget Sound Energy |
WECC |
Washington: King County, Kitsap County, Whatcom County, Thurston County, Pierce County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
90000 |
| 2021 |
11 |
11/24/2021 10:00 AM |
11/26/2021 10:21 AM |
48 Hours, 21 Minutes |
Southern California Edison Co |
WECC |
California: Riverside County, Ventura County, San Bernardino County, Orange County, Los Angeles County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
81406 |
| 2021 |
11 |
11/30/2021 6:46 AM |
11/30/2021 6:47 AM |
0 Hours, 1 Minutes |
Duke Energy Carolinas |
SERC |
North Carolina: South Carolina: |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
0 |
0 |
| 2021 |
11 |
11/30/2021 1:47 PM |
11/30/2021 2:21 PM |
0 Hours, 34 Minutes |
Pacific Gas & Electric Co |
WECC |
California: |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-System Operations |
10 |
6000 |
| 2021 |
12 |
12/07/2021 2:33 PM |
12/07/2021 3:40 PM |
1 Hours, 7 Minutes |
Duke Energy Midwest |
RF |
Indiana: Putnam County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-Transmission Interruption |
0 |
0 |
| 2021 |
12 |
12/11/2021 3:13 AM |
12/15/2021 3:30 PM |
108 Hours, 17 Minutes |
Nashville Electric Service |
SERC |
Tennessee: Davidson County, Sumner County; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
177 |
107344 |
| 2021 |
12 |
12/11/2021 10:30 AM |
12/11/2021 3:00 PM |
4 Hours, 30 Minutes |
Consumers Energy Co |
MRO |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
159947 |
| 2021 |
12 |
12/11/2021 11:13 AM |
12/12/2021 11:06 PM |
35 Hours, 53 Minutes |
Detroit Edison Co |
MRO |
Michigan: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
182410 |
| 2021 |
12 |
12/11/2021 6:16 PM |
12/13/2021 5:00 PM |
46 Hours, 44 Minutes |
National Grid |
NPCC |
New York: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
103000 |
| 2021 |
12 |
12/14/2021 7:28 AM |
12/14/2021 1:43 PM |
6 Hours, 15 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Humboldt County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-Severe Weather |
120 |
65994 |
| 2021 |
12 |
12/14/2021 9:39 AM |
12/14/2021 9:48 AM |
0 Hours, 9 Minutes |
Chelan County PUD |
WECC |
Washington: Chelan County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
0 |
0 |
| 2021 |
12 |
12/15/2021 3:56 PM |
12/15/2021 5:27 PM |
1 Hours, 31 Minutes |
Nebraska Public Power District |
MRO |
Nebraska: Burt County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
5 |
Unknown |
| 2021 |
12 |
12/15/2021 4:37 PM |
. . |
. Hours, . Minutes |
Evergy |
SERC/MRO |
Missouri: Kansas: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
Unknown |
| 2021 |
12 |
12/15/2021 4:37 PM |
12/16/2021 11:30 AM |
18 Hours, 53 Minutes |
Evergy, Inc |
SERC/MRO |
Missouri: Kansas: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
0 |
258000 |
| 2021 |
12 |
12/15/2021 6:00 PM |
12/16/2021 9:00 AM |
15 Hours, 0 Minutes |
Alliant Energy |
MRO |
Iowa: Wisconsin: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
134000 |
| 2021 |
12 |
12/15/2021 7:00 PM |
12/16/2021 3:00 AM |
8 Hours, 0 Minutes |
Southwest Power Pool, Inc. |
MRO |
Kansas: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
174000 |
| 2021 |
12 |
12/15/2021 8:00 PM |
. . |
. Hours, . Minutes |
We Energies |
MRO |
Wisconsin: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
156000 |
| 2021 |
12 |
12/15/2021 8:00 PM |
. . |
. Hours, . Minutes |
WPSC |
MRO |
Wisconsin: |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
80000 |
| 2021 |
12 |
12/16/2021 6:00 AM |
12/16/2021 8:00 PM |
14 Hours, 0 Minutes |
Consumers Energy Co |
MRO |
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; |
Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather |
Unknown |
200675 |
| 2021 |
12 |
12/21/2021 9:59 PM |
12/22/2021 2:15 PM |
16 Hours, 16 Minutes |
American Electric Power - Texas |
TRE |
Texas: Cameron County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
22 |
Unknown |
| 2021 |
12 |
12/23/2021 2:02 PM |
12/23/2021 2:55 PM |
0 Hours, 53 Minutes |
Eversource Energy (NSTAR) |
NPCC |
Massachusetts: Suffolk County[13]; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
0 |
0 |
| 2021 |
12 |
12/24/2021 12:34 AM |
12/24/2021 6:40 AM |
6 Hours, 6 Minutes |
Oncor Electric Delivery Company LLC |
TRE |
Texas: Rusk County; |
Unexpected Transmission loss within its area, contrary to design, of three or more Bulk Electric System Facilities caused by a common disturbance (excluding successful automatic reclosing).-System Operations |
Unknown |
Unknown |
| 2021 |
12 |
12/27/2021 9:01 PM |
12/30/2021 9:11 AM |
60 Hours, 10 Minutes |
Pacific Gas & Electric Co |
WECC |
California: Humboldt County; |
Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational in an otherwise blacked out area or within the partial failure of an integrated electrical system-System Operations |
120 |
65994 |
