Public Notices

This section contains public market notifications required by protocols as well as other market messages ERCOT may post for market transparency. Notices are categorized by types and can be filtered by selecting the desired category. ERCOT began archiving public notices November 3, 2011.

Oct 2018 Nov 2018 Dec 2018 Jan 2019 Feb 2019 Mar 2019
Date Message Type Status
Mar 12 2019 08:46:20 CST The Daily RSASM for Tuesday, March 12, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 12 2019 00:10:36 CST On March 11, 2019, a sudden loss of generation occurred at 21:49 totaling 612 MW. Frequency declined to 59.823 Hz, ERCOT load was 39, 378 MW. Operational Information Active
Mar 11 2019 21:28:25 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 11 2019 21:24:09 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 11 2019 08:46:38 CST The Daily RSASM for Monday, March 11, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 11 2019 00:01:57 CST No sudden loss of generation greater than 450 MW occurred on March 10, 2019. Operational Information Active
Mar 10 2019 08:46:41 CST The Daily RSASM for Sunday, March 10, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 10 2019 00:00:11 CST No sudden loss of generation greater than 450 MW occurred on March 9, 2019. Operational Information Active
Mar 09 2019 08:48:43 CST The Daily RSASM for Saturday, March 9, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 09 2019 00:11:42 CST No sudden loss of generation greater than 450 MW occurred on March 8, 2019. Operational Information Active
Mar 08 2019 08:46:10 CST The Daily RSASM for Friday, March 8, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 08 2019 04:28:09 CST ERCOT is working from primary control center. Operational Information Active
Mar 08 2019 04:27:54 CST ERCOT has cancelled the following notice: As of 16:22, ERCOT will be operating out of their alternate control center, until further notice. Operational Information Cancelled
Mar 08 2019 01:21:27 CST No sudden loss of generation greater than 450 MW occurred on March 7, 2019. Operational Information Active
Mar 07 2019 21:05:13 CST As of 16:22, ERCOT will be operating out of their alternate control center, until further notice. Operational Information Active
Mar 07 2019 17:09:52 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Mar 07, 2019 is available. Operational Instruction Active
Mar 07 2019 08:46:42 CST The Daily RSASM for Thursday, March 7, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 07 2019 00:21:31 CST No sudden loss of generation greater than 450 MW occurred on March 6, 2019. Operational Information Active
Mar 07 2019 00:17:39 CST No sudden loss of generation greater than 450 MW occurred on March 6, 2019. Operational Information Active
Mar 06 2019 13:00:33 CST ERCOT has cancelled the following notice: At 12:00 ERCOT is issuing an OCN for a potential extreme cold weather system for early March impacting the ERCOT region from 03/03/19-03/07/19. Operational Information Cancelled
Mar 06 2019 08:49:33 CST The Daily RSASM for Wednesday, March 6, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 06 2019 00:21:00 CST No sudden loss of generation greater than 450 MW occurred on March 5, 2019. Operational Information Active
Mar 05 2019 08:48:15 CST The Daily RSASM for Tuesday, March 5, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 05 2019 00:31:24 CST On March 4, 2019, a sudden loss of generation occurred at 20:11 totaling 452 MW. Frequency declined to 59.930 Hz, ERCOT load was 50, 641 MW. Operational Information Active
Mar 04 2019 08:48:29 CST The Daily RSASM for Monday, March 4, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 04 2019 00:01:07 CST No sudden loss of generation greater than 450 MW occurred on March 3, 2019. Operational Information Active
Mar 03 2019 08:45:30 CST The Daily RSASM for Sunday, March 3, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 03 2019 00:02:14 CST On March 2, 2019, a sudden loss of generation occurred at 03:19 totaling 1212 MW. Frequency declined to 59.774 Hz, ERCOT load was 33, 942 MW. Operational Information Active
Mar 02 2019 08:46:37 CST The Daily RSASM for Saturday, March 2, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 02 2019 03:24:33 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 02 2019 03:18:57 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 02 2019 00:28:59 CST No sudden loss of generation greater than 450 MW occurred on March 1, 2019. Operational Information Active
Mar 01 2019 08:47:11 CST The Daily RSASM for Friday, March 1, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Mar 01 2019 00:00:44 CST No sudden loss of generation greater than 450 MW occurred on February 28, 2019. Operational Information Active