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.

    Aug 2017 Sep 2017 Oct 2017 Nov 2017 Dec 2017 Jan 2018
    Date Message Type Status
    Jan 17 2018 03:34:49 CST On 01/16/2018, a sudden loss of generation occurred at 12:28 totaling 501MW. Frequency declined to 59.952Hz, ERCOT load was 60, 915MW. Operational Information Active
    Jan 17 2018 00:09:15 CST ERCOT Emergency Base Points are Disabled Operational Information Cancelled
    Jan 17 2018 00:08:27 CST ERCOT Emergency Base Points are Enabled Operational Information Active
    Jan 16 2018 21:16:01 CST TCEQ has approved ERCOT's request for enforcement discretion for any power generating facility to exceed its air permit limits in order to provide continued or additional capacity to the ERCOT System through the morning on January 17, 2018. This enforcement discretion is effective immediately. More details will be provided in a Market Notice. Operational Information Active
    Jan 16 2018 08:58:57 CST ERCOT is issuing a Watch due to freezing precipitation in the San Antonio to Houston areas. Operational Information Active
    Jan 16 2018 08:46:28 CST The Daily RSASM for Tuesday, January 16, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 16 2018 01:19:50 CST No sudden loss of generation greater than 450 MW occurred on January 15, 2018 Operational Information Active
    Jan 15 2018 08:48:27 CST The Daily RSASM for Monday, January 15, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 15 2018 00:07:59 CST No sudden loss of generation greater than 450 MW occurred on January 14, 2018. Operational Information Active
    Jan 14 2018 14:53:40 CST At 1500, ERCOT is issuing a Watch for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 01/15/18 – 01/18/18. Operational Information Active
    Jan 14 2018 08:46:36 CST The Daily RSASM for Sunday, January 14, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 14 2018 00:09:47 CST No sudden loss of generation greater than 450 MW occurred on January 13, 2018. Operational Information Active
    Jan 13 2018 13:59:22 CST At 14:00 ERCOT is issuing an Advisory for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 01/15/18 to 01/18/18. Operational Information Active
    Jan 13 2018 08:47:12 CST The Daily RSASM for Saturday, January 13, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 13 2018 00:02:50 CST No sudden loss of generation greater than 450 MW occurred on January 12, 2018. Operational Information Active
    Jan 12 2018 18:28:21 CST ERCOT has cancelled the following notice: The ESKSW RAS 39 has been removed from service. Operational Information Cancelled
    Jan 12 2018 16:22:35 CST The ESKSW RAS 39 has been removed from service. Operational Information Active
    Jan 12 2018 16:17:06 CST At 11:30, ERCOT is issuing an OCN for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 01/15/18 to 01/18/18. Operational Information Active
    Jan 12 2018 16:16:29 CST ERCOT has cancelled the following notice: At 11:30, ERCOT is issuing an OCN for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 0/15/18 to 01/18/18. Operational Information Cancelled
    Jan 12 2018 11:36:08 CST At 11:30, ERCOT is issuing an OCN for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 0/15/18 to 01/18/18. Operational Information Active
    Jan 12 2018 08:47:09 CST The Daily RSASM for Friday, January 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 12 2018 04:35:41 CST At 0426 ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
    Jan 12 2018 00:16:48 CST No sudden loss of generation greater than 450 MW occurred on January 11, 2018. Operational Information Active
    Jan 12 2018 00:16:32 CST No sudden loss of generation greater than 450 MW occurred on January 11, 2018. Operational Information Active
    Jan 11 2018 16:27:41 CST At 16:05, ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
    Jan 11 2018 08:48:02 CST The Daily RSASM for Thursday, January 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 11 2018 01:16:47 CST No sudden loss of generation greater than 450 MW occurred on January 10, 2018. Operational Information Active
    Jan 10 2018 08:49:48 CST The Daily RSASM for Wednesday, January 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 10 2018 02:14:49 CST No sudden loss of generation greater than 450 MW occurred on January 9, 2018. Operational Information Active
    Jan 10 2018 02:14:43 CST No sudden loss of generation greater than 450 MW occurred on January 9, 2018. Operational Information Active
    Jan 09 2018 08:48:13 CST The Daily RSASM for Tuesday, January 9, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 09 2018 01:09:31 CST No sudden loss of generation greater than 450 MW occurred on January 8, 2018. Operational Information Active
    Jan 09 2018 01:06:08 CST No sudden loss of generation greater than 450 MW occurred on January 8, 2018. Operational Information Active
    Jan 08 2018 08:47:17 CST The Daily RSASM for Monday, January 8, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 08 2018 00:00:56 CST No sudden loss of generation greater than 450 MW occurred on January 7, 2018. Operational Information Active
    Jan 07 2018 08:46:41 CST The Daily RSASM for Sunday, January 7, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 07 2018 08:46:40 CST The Daily RSASM for Sunday, January 7, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 07 2018 00:22:08 CST No sudden loss of generation greater than 450 MW occurred on January 6, 2018. Operational Information Active
    Jan 06 2018 08:49:34 CST The Daily RSASM for Saturday, January 6, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 06 2018 00:03:18 CST On January 5, 2018, a sudden loss of generation occurred at 09:10 totaling 495 MW. Frequency declined to 59.905 Hz, ERCOT load was 47, 187 MW. Operational Information Active
    Jan 05 2018 09:12:21 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jan 05 2018 09:11:01 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jan 05 2018 08:46:44 CST The Daily RSASM for Friday, January 5, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 05 2018 00:00:13 CST No sudden loss of generation greater than 450 MW occurred on January 4, 2018. Operational Information Active
    Jan 04 2018 10:02:57 CST ERCOT has cancelled the following notice: At 10:00, ERCOT is issuing an OCN for a potential extreme cold weather system approaching the ERCOT region from 01/01/18 – 01/02/18. Operational Information Cancelled
    Jan 04 2018 10:02:26 CST ERCOT has cancelled the following notice: At 10:00, ERCOT is issuing an OCN for a potential extreme cold weather system approaching the ERCOT region from 01/01/18 – 01/02/18. Operational Information Cancelled
    Jan 04 2018 10:02:08 CST ERCOT has cancelled the following notice: At 17:00, ERCOT is issuing an Advisory for a potential extreme cold weather system approaching the ERCOT region from 01/01/18 to 01/02/18. Advisory Cancelled
    Jan 04 2018 10:01:49 CST ERCOT has cancelled the following notice: At 13:00, ERCOT is issuing a Watch for the extreme cold weather system approaching from 01/01/18 to 01/03/18. Temperatures are expected to remain 32°F or below. Operational Information Cancelled
    Jan 04 2018 10:01:30 CST ERCOT has cancelled the following notice: At 16:25 ERCOT is extending the Watch issued on 12-31-2017 for extreme cold weather system affecting the ERCOT region through 01/04/2018. Operational Information Cancelled
    Jan 04 2018 08:49:50 CST The Daily RSASM for Thursday, January 4, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 04 2018 00:02:20 CST No sudden loss of generation greater than 450 MW occurred on January 3, 2018. Operational Information Active
    Jan 03 2018 16:39:56 CST At 16:25 ERCOT is extending the Watch issued on 12-31-2017 for extreme cold weather system affecting the ERCOT region through 01/04/2018. Operational Information Active
    Jan 03 2018 09:50:11 CST Barney Davis RAS removed from service Operational Information Active
    Jan 03 2018 08:49:46 CST The Daily RSASM for Wednesday, January 3, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jan 03 2018 00:02:17 CST No sudden loss of generation greater than 450 MW occurred on January 2, 2018. Operational Information Active
    Jan 02 2018 22:00:48 CST ERCOT will execute a SASM at 22:30 for operating day 01/03/2018 HE 3, 7-10. NSPIN 113, 13, 79, 79, 92.1 MW REGUP HE 7 100 MW RRS HE 8-10 34, 34, 20.9 MW Operational Information Active
    Jan 02 2018 08:51:24 CST The Daily RSASM for Tuesday, January 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 02 2018 00:00:39 CST On 01/01/2018, a sudden loss of generation occurred at 03:46 totaling 620 MW. Frequency declined to 59.938 Hz, ERCOT load was 51, 100 MW. Another sudden loss of generation occurred at 08:05 totaling 528 MW. Frequency declined to 59.926 Hz, ERCOT load was 55, 308 MW. Operational Information Active
    Jan 01 2018 08:49:38 CST The Daily RSASM for Monday, January 1, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jan 01 2018 00:56:25 CST No sudden loss of generation greater than 450 MW occurred on December 31, 2017. Operational Information Active