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Electric Power Monthly

Data for January 2020  |  Release date: March 24, 2020  |  Next release: April 24, 2020  |
full report  |  Re-release date: April 2, 2020  Revision

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SAS Output
Table B.1 Major Disturbances and Unusual Occurrences, Year-to-Date 2020

Year Month Event Date and
Time
Restoration Date
and Time
Duration Utility/Power Pool NERC Region Area Affected Type of Disturbance Loss (megawatts) Number of Customers Affected
2020 1 . . . . . Hours, . Minutes Tennessee Valley Authority SERC Tennessee: 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 4  
2020 1 . . . . . Hours, . Minutes Western Area Power Administration - Upper Great Plains Region MRO North Dakota: Burleigh 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 75 0
2020 1 . . . . . Hours, . Minutes Entergy - Transmission Operations Engineering SPP RE Arkansas: Cross 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 22 7541
2020 1 . . . . . Hours, . Minutes Southern Company SERC Alabama: Georgia: Mississippi: Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather 219 30715
2020 1 . . . . . 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
2020 1 . . . . . Hours, . Minutes Entergy Corp SPP RE Arkansas: Texas: Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather   68138
2020 1 . . . . . Hours, . Minutes Entergy - Transmission Operations Engineering SPP RE Arkansas: Yell 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
2020 1 . . . . . Hours, . Minutes Entergy Transmission Control Center - South SPP RE Arkansas: 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    
2020 1 . . . . . Hours, . Minutes Duke Energy Carolinas SERC North Carolina: South Carolina: Loss of electric service to more than 50,000 customers for 1 hour or more.-Severe Weather   66475
2020 1 . . . . . Hours, . Minutes Pacific Gas & Electric Co WECC California: Humboldt 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 87 67864

Note: Customers affected are estimates and are preliminary.
Source: Form OE-417, 'Electric Emergency Incident and Disturbance Report.'