Electric Power Monthly

Data for April 2015  |  Release Date: June 25, 2015  |  Next Release: July 27, 2015 
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SAS Output
Table B.1 Major Disturbances and Unusual Occurrences, Year-to-Date 2015

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
2015 1 01/07/2015 5:00 PM 01/08/2015 8:35 AM 15 Hours, 35 Minutes Memphis Light Gas and Water Division SERC Tennessee Public appeal to reduce the use of electricity - Severe Weather - Winter Unknown Unknown
2015 1 01/07/2015 5:00 PM 01/08/2015 8:35 AM 15 Hours, 35 Minutes Tennessee Valley Authority SERC Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri Public appeal to reduce the use of electricity - Severe Weather - Winter Unknown Unknown
2015 2 02/06/2015 8:58 PM ongoing ongoing Pacific Gas & Electric Co WECC Northern California Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather - Wind Unknown 65000
2015 2 02/16/2015 9:00 PM 02/18/2015 2:00 PM 41 Hours, 0 Minutes Tennessee Valley Authority SERC Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter Unknown 67189
2015 2 02/16/2015 9:41 PM 02/18/2015 7:00 AM 33 Hours, 19 Minutes Southern Company SERC Northern/North Eastern, Georgia Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter 620 186035
2015 2 02/17/2015 2:12 AM 02/18/2015 4:00 PM 37 Hours, 48 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- Winter Unknown 68000
2015 2 02/17/2015 9:00 AM 02/18/2015 11:00 PM 38 Hours, 0 Minutes Duke Energy Progress SERC North Carolina, South Carolina Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter Unknown 52000
2015 2 02/18/2015 3:00 PM 02/20/2015 9:00 AM 42 Hours, 0 Minutes Tennessee Valley Authority SERC Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, Missouri Public appeal to reduce the use of electricity - Severe Weather- Winter Unknown Unknown
2015 2 02/20/2015 6:00 AM 02/20/2015 10:00 AM 4 Hours, 0 Minutes Duke Energy Progress SERC North Carolina, South Carolina System-wide voltage reductions of 3 percent or more - Severe Weather- Winter Unknown Unknown
2015 2 02/21/2015 8:34 AM 02/21/2015 12:45 PM 4 Hours, 11 Minutes Tennessee Valley Authority SERC Fentress County, Tennessee Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter Unknown 50000
2015 2 02/26/2015 3:12 AM 02/26/2015 8:00 PM 16 Hours, 48 Minutes Duke Energy Progress SERC North Carolina, South Carolina Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter Unknown 124000
2015 2 02/26/2015 3:30 AM 02/27/2015 12:00 PM 32 Hours, 30 Minutes Duke Energy Carolinas SERC North Carolina Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather- Winter 400 103776
2015 3 03/15/2015 3:30 PM 03/15/2015 7:00 PM 3 Hours, 30 Minutes Portland General Electric Co WECC Greater Portland & Salem , Oregon Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather - Wind 210 71000
2015 3 03/26/2015 3:21 PM 03/26/2015 4:59 PM 1 Hours, 38 Minutes Pacific Gas & Electric Co WECC Contra Costa County, California Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational - System Operations 15 Unknown
2015 4 04/03/2015 2:00 AM 04/03/2015 7:48 AM 5 Hours, 48 Minutes Westar Energy Inc SPP Harvey, Reno, and Sedgwick Counties, Kansas Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather - Thunderstorms Unknown 70000
2015 4 04/06/2015 8:12 AM 04/06/2015 12:08 PM 3 Hours, 56 Minutes Pacific Gas & Electric Co WECC Butte County, California Loss of electric service to more than 50,000 customers for 1 hour or more - System Operations Unknown 80000
2015 4 04/07/2015 12:30 PM 04/07/2015 5:34 PM 5 Hours, 4 Minutes Potomac Electric Power Co RFC Unknown Uncontrolled loss of 300 Megawatts or more of firm system loads for more than 15 minutes from a single incident - System Operations Unknown Unknown
2015 4 04/07/2015 3:34 PM 04/07/2015 3:46 PM 0 Hours, 12 Minutes WAPA Sierra Nevada Region WECC California Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational - System Operations 0 0
2015 4 04/17/2015 9:16 AM 04/17/2015 11:00 AM 1 Hours, 44 Minutes Peak Reliability WECC Canada Electrical System Separation (Islanding) where part or parts of a power grid remain(s) operational - System Operations 9300 Unknown
2015 4 04/17/2015 9:30 PM 04/19/2015 11:50 PM 50 Hours, 20 Minutes CenterPoint Energy TRE Houston, Texas Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather Unknown 280982
2015 4 04/18/2015 9:00 PM 04/21/2015 4:00 AM 55 Hours, 0 Minutes Oncor Electric Delivery Company LLC TRE Dallas, Fort Worth, Texas Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather Unknown 89000
2015 4 04/24/2015 7:10 PM 04/26/2015 4:00 PM 44 Hours, 50 Minutes Oncor Electric Delivery Company LLC TRE Dallas, Fort Worth, Texas Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather Unknown 57000
2015 4 04/27/2015 10:30 AM 04/28/2015 6:45 PM 32 Hours, 15 Minutes Entergy Services, Inc. SERC Louisiana and Texas Loss of electric service to more than 50,000 customers for 1 hour or more - Severe Weather Unknown 199000

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