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Operations Messages

This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. 

Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025
Date & Time Notice Type Status
Nov 10, 2025 12:00:49 AM No sudden loss of generation greater than 450 MW occurred on November 9, 2025. Operational Information Active
Nov 9, 2025 8:46:54 AM The Daily RSASM for 11/09/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 9, 2025 6:30:30 AM At 06:30, ERCOT is issuing an OCN due to a potential wildfire risk for Sunday, November 9, 2025, for a large portion of South-Central Texas in the ERCOT region until further notice. OCN Active
Nov 9, 2025 12:01:10 AM No sudden loss of generation greater than 450 MW occurred on November 8, 2025. Operational Information Active
Nov 8, 2025 8:46:34 AM The Daily RSASM for 11/08/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 8, 2025 12:00:35 AM No sudden loss of generation greater than 450 MW occurred on November 7, 2025. Operational Information Active
Nov 7, 2025 6:20:59 PM At 18:20, All Non-Spin has been recalled. Operational Information Active
Nov 7, 2025 6:20:29 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2025-11-07 18:20:29, END_TIME: 2025-11-07 18:20:29, DURATION: 0 Hrs 0 Mins.; Operational Information
Nov 7, 2025 5:33:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 736.6, BEGIN_TIME: 2025-11-07 18:00:00, END_TIME: 2025-11-07 23:59:00, DURATION: 5 Hrs 59 Mins.; Operational Information
Nov 7, 2025 4:38:17 PM At 16:36 approximately 732 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
Nov 7, 2025 4:36:58 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 732.1, BEGIN_TIME: 2025-11-07 16:36:58, END_TIME: 2025-11-07 23:59:00, DURATION: 7 Hrs 22 Mins.; Operational Information
Nov 7, 2025 8:47:24 AM The Daily RSASM for 11/07/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 7, 2025 12:08:41 AM No sudden loss of generation greater than 450 MW occurred on November 6, 2025. Operational Information Active
Nov 6, 2025 4:40:24 PM ERCOT has cancelled the following notice: At 3:30 PM on 11/06/2025, ERCOT will perform site failover of its Energy & Market Management Systems. During this time, market communications will be unavailable for about 20 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This event will be preceded by a "hot line" call shortly before beginning. Operational Information Cancelled
Nov 6, 2025 10:16:26 AM At 3:30 PM on 11/06/2025, ERCOT will perform site failover of its Energy & Market Management Systems. During this time, market communications will be unavailable for about 20 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This event will be preceded by a "hot line" call shortly before beginning. Operational Information Active
Nov 6, 2025 8:47:43 AM The Daily RSASM for 11/06/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 6, 2025 6:00:18 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Alert of K7 until 0600, Nov 6, 2025. Operational Information Cancelled
Nov 6, 2025 6:00:07 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 until 0600, Nov 6, 2025. Operational Information Cancelled
Nov 6, 2025 3:50:15 AM ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
Nov 6, 2025 3:49:46 AM ERCOT has cancelled the following notice: ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Cancelled
Nov 5, 2025 11:51:15 PM The Space Weather Prediction Center has issued a GMD Alert of K7 until 0600, Nov 6, 2025. Operational Information Active
Nov 5, 2025 10:49:49 PM The Space Weather Prediction Center has issued a GMD Warning of K7 until 0600, Nov 6, 2025. Operational Information Active
Nov 5, 2025 3:52:25 PM ERCOT has cancelled the following notice: At 15:30, ERCOT will perform a patch on its Market Management System. We do not expect to miss a SCED run. Operational Information Cancelled
Nov 5, 2025 3:45:50 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Nov 5, 2025 3:00:03 PM At 15:30, ERCOT will perform a patch on its Market Management System. We do not expect to miss a SCED run. Operational Information Active
Nov 5, 2025 8:46:28 AM The Daily RSASM for 11/05/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 5, 2025 12:06:01 AM No sudden loss of generation greater than 450 MW occurred on November 4, 2025. Operational Information Active
Nov 4, 2025 8:46:31 AM The Daily RSASM for 11/04/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 4, 2025 1:13:02 AM On Nov 3, 2025, a sudden loss of generation occurred at 06:56 totaling 502 MW. Frequency declined to 59.953 Hz, ERCOT load was 47,084 MW. Operational Information Active
Nov 3, 2025 8:46:20 AM The Daily RSASM for 11/03/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 3, 2025 12:03:14 AM No sudden loss of generation greater than 450 MW occurred on November 2, 2025. Operational Information Active
Nov 2, 2025 8:46:01 AM The Daily RSASM for 11/02/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 2, 2025 12:09:56 AM No sudden loss of generation greater than 450 MW occurred on November 1, 2025. Operational Information Active
Nov 1, 2025 8:16:41 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 19:45 for operating day 11/01/25 this is for RRS HE22-HE24: 19.2MW each hour as well as operating day 11/02/25 for RRS HE1-HE5: 19.2MW each hour. Operational Information Cancelled
Nov 1, 2025 7:10:51 PM ERCOT will execute a SASM at 19:45 for operating day 11/01/25 this is for RRS HE22-HE24: 19.2MW each hour as well as operating day 11/02/25 for RRS HE1-HE5: 19.2MW each hour. Operational Information Active
Nov 1, 2025 8:45:57 AM The Daily RSASM for 11/01/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 1, 2025 12:01:27 AM No sudden loss of generation greater than 450 MW occurred on October 31, 2025. Operational Information Active