Electric Power Monthly

Data for January 2023 Release Date: March 24, 2023 Next Release Date: April 25, 2023 Full report PDF

SAS Output

Table B.1 Major Disturbances and Unusual Occurrences, Year-to-Date 2023

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
2023	1	01/01/2023 9:55 AM	01/01/2023 10:30 AM	0 Hours, 35 Minutes	Western Area Power Administration - Sierra Nevada Region (114 Parkshore Dr. Folsom, CA. 95630)	WECC	California: Sacramento County;	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
2023	1	01/05/2023 7:30 AM	01/05/2023 9:30 AM	2 Hours, 0 Minutes	Bonneville Power Administration	WECC	Washington: Lewis County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	0	0
2023	1	01/05/2023 8:19 AM	01/05/2023 8:20 AM	0 Hours, 1 Minutes	Entergy - Transmission Operations Engineering	SERC	Louisiana: Concordia Parish;	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	23	1631
2023	1	01/06/2023 9:30 AM	01/06/2023 11:30 AM	2 Hours, 0 Minutes	American Mun Power-Ohio, Inc	RF	Ohio: Sandusky County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	Unknown	Unknown
2023	1	01/07/2023 10:00 PM	01/08/2023 9:00 PM	23 Hours, 0 Minutes	Sacramento Municipal Util Dist	WECC	California: Sacramento County;	Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather	458	185434
2023	1	01/12/2023 10:00 AM	. .	. Hours, . Minutes	Sacramento Municipal Util Dist	WECC	California: Sacramento County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	0	0
2023	1	01/12/2023 2:00 PM	01/13/2023 3:00 AM	13 Hours, 0 Minutes	Southern Company	SERC	Alabama: Georgia:	Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather	1158	162000
2023	1	01/13/2023 12:00 AM	01/13/2023 12:00 AM	0 Hours, 0 Minutes	Lower Colorado River Authority	TRE	Texas: Fayette County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	0	0
2023	1	01/19/2023 11:00 AM	01/19/2023 1:00 PM	2 Hours, 0 Minutes	Duke Energy Progress	SERC	South Carolina: Sumter County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	Unknown	Unknown
2023	1	01/23/2023 7:05 AM	01/24/2023 5:17 PM	34 Hours, 12 Minutes	ISO New England	NPCC	Connecticut: Rhode Island: Massachusetts: Vermont: New Hampshire: Maine:	Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather	Unknown	41000
2023	1	01/23/2023 9:21 AM	. .	. Hours, . Minutes	Sacramento Municipal Util Dist	WECC	California: Sacramento County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	Unknown	Unknown
2023	1	01/23/2023 5:00 PM	. .	. Hours, . Minutes	Sacramento Municipal Util Dist	WECC	California: Sacramento County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	Unknown	Unknown
2023	1	01/24/2023 3:25 PM	01/26/2023 8:20 PM	52 Hours, 55 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	100731
2023	1	01/24/2023 5:10 PM	01/24/2023 5:20 PM	0 Hours, 10 Minutes	Ravenswood Generating Station	NPCC	New York: Queens County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	0	0
2023	1	01/25/2023 3:30 AM	01/25/2023 1:00 PM	9 Hours, 30 Minutes	Entergy Corp	SERC	Arkansas: Texas: Louisiana: Mississippi:	Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather	Unknown	60958
2023	1	01/25/2023 3:57 PM	01/25/2023 5:38 PM	1 Hours, 41 Minutes	Brownsville Public Utilities Board	TRE	Texas: Cameron County;	Physical threat to its Facility excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the Facility. Or suspicious device or activity at its Facility.-Suspicious Activity	0	0
2023	1	01/30/2023 10:30 AM	. .	. Hours, . Minutes	Onward Energy	MRO	Minnesota:	Physical threat to its Bulk Electric System control center, excluding weather or natural disaster related threats, which has the potential to degrade the normal operation of the control center. Or suspicious device or activity at its Bulk Electric System control center.-Suspicious Activity	Unknown	Unknown
2023	1	01/31/2023 8:15 AM	02/06/2023 5:00 PM	152 Hours, 45 Minutes	Oncor Electric Delivery Company LLC	TRE	Texas: Dallas County, Anderson County, Bosque County, Collin County, Comanche County, Cooke County, Delta County, Denton County, Ellis County, Erath County, Fannin County, Freestone County, Hamilton County, Henderson County, Hill County, Hood County, Hopkins County, Hunt County, Jack County, Johnson County, Kaufman County, Lamar County, Navarro County, Palo Pinto County, Parker County, Rains Count	Loss of electric service to more than 50,000 customers for 1 hour or more-Severe Weather	Unknown	360000

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