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Public Notices

This section contains public market notifications required by protocols as well as other market messages ERCOT may post for market transparency. ERCOT began archiving public notices November 3, 2011.

Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025
Date & Time Notice Type Status
Jun 5, 2025 12:00:49 AM No sudden loss of generation greater than 450 MW occurred on June 4, 2025. Operational Information Active
Jun 4, 2025 3:55:22 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Jun 4, 2025 3:00:28 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 1440 for operating day 06/04/25 for ECRS HE17 6.5MW, HE18 6.6MW, HE19 5.7MW Operational Information Cancelled
Jun 4, 2025 2:08:44 PM ERCOT will execute a SASM at 1440 for operating day 06/04/25 for ECRS HE17 6.5MW, HE18 6.6MW, HE19 5.7MW Operational Information Active
Jun 4, 2025 10:49:09 AM End of ERCOT Emergency Notification Test
At 10:49, the test of the ERCOT Emergency Notification System ended. 		Emergency Notice Active
Jun 4, 2025 10:37:42 AM ERCOT Emergency Notification Test
At 10:37, this is a test of the ERCOT Emergency Notification System. No action is required. 		Emergency Notice Active
Jun 4, 2025 8:46:34 AM The Daily RSASM for 06/04/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 4, 2025 12:09:18 AM No sudden loss of generation greater than 450 MW occurred on June 3, 2025. Operational Information Active
Jun 3, 2025 8:47:04 AM The Daily RSASM for 06/03/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 3, 2025 4:32:52 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K7 until June 3, 2025 04:00. Operational Information Cancelled
Jun 3, 2025 12:05:19 AM On June 2, 2025, a sudden loss of generation occurred at 02:49 totaling 643 MW. Frequency declined to 59.938 Hz, ERCOT load was 49,607 MW. Operational Information Active
Jun 2, 2025 4:06:07 PM The Space Weather Prediction Center has extended the GMD Warning of K7 until June 3, 2025 04:00. Operational Information Active
Jun 2, 2025 4:05:06 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 2, 2025 at 1600. Operational Information Cancelled
Jun 2, 2025 8:46:53 AM The Daily RSASM for 06/02/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 2, 2025 6:42:57 AM The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 2, 2025 at 1600. Operational Information Active
Jun 2, 2025 4:37:26 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the K-7 or greater Warning until 0400 on 06/02/2025. Non-Operational Notice Cancelled
Jun 2, 2025 12:24:27 AM On June 1, 2025, a sudden loss of generation occurred at 23:02 totaling 528 MW. Frequency declined to 59.982 Hz, ERCOT load was 60,363 MW. Operational Information Active
Jun 2, 2025 12:23:36 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K8 until June 1, 2025 16:00. Operational Information Cancelled
Jun 2, 2025 12:11:59 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 1, 2025 at 1600. Advisory Cancelled
Jun 1, 2025 6:42:04 PM ERCOT has cancelled the following notice: At 1718 Advisory issued due to ERCOT’s Transient Security Assessment Tool is currently unavailable. Advisory Cancelled
Jun 1, 2025 5:30:59 PM At 1718 Advisory issued due to ERCOT’s Transient Security Assessment Tool is currently unavailable. Advisory Active
Jun 1, 2025 3:55:32 PM The Space Weather Prediction Center has extended the K-7 or greater Warning until 0400 on 06/02/2025. Non-Operational Notice Active
Jun 1, 2025 8:46:13 AM The Daily RSASM for 06/01/2025 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 1, 2025 3:59:24 AM The Space Weather Prediction Center has extended the GMD Warning of K8 until June 1, 2025 16:00. Operational Information Active
Jun 1, 2025 3:57:39 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 until June 1, 2025 at 1600. Operational Information Cancelled
Jun 1, 2025 2:59:20 AM The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 1, 2025 at 1600. Advisory Active
Jun 1, 2025 2:47:53 AM The Space Weather Prediction Center has issued a GMD Warning of K7 until June 1, 2025 at 1600. Operational Information Active
Jun 1, 2025 12:43:02 AM No sudden loss of generation greater than 450 MW occurred on May 31, 2025. Operational Information Active