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 2018 Sep 2018 Oct 2018 Nov 2018 Dec 2018 Jan 2019
    Date Message Type Status
    Nov 30 2018 19:33:27 CST ERCOT has cancelled the following notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
    Nov 30 2018 19:19:54 CST DC Tie Curtailment Notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
    Nov 30 2018 08:52:53 CST The Daily RSASM for Friday, November 30, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 30 2018 07:11:45 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/03/2018 due to a forced outage. Operational Information Cancelled
    Nov 30 2018 07:10:57 CST UPDATE, new return date: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/10/2018 due to a forced outage. Operational Information Active
    Nov 30 2018 00:01:10 CST No sudden loss of generation greater than 450 MW occurred on November 29, 2018. Operational Information Active
    Nov 29 2018 12:13:17 CST DC Tie Outage: The DC_S (Eagle Pass) DC Tie will be unavailable from 12:09 11/29/2018 through 16:00 12/07/2018 due to a planned outage. Operational Information Active
    Nov 29 2018 08:46:47 CST The Daily RSASM for Thursday, November 29, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 29 2018 00:11:20 CST No sudden loss of generation greater than 450 MW occurred on November 28, 2018. Operational Information Active
    Nov 28 2018 10:52:57 CST DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/03/2018 due to a forced outage. Operational Information Active
    Nov 28 2018 08:45:08 CST The Daily RSASM for Wednesday, November 28, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 28 2018 00:17:05 CST No sudden loss of generation greater than 450 MW occurred on November 27, 2018. Operational Information Active
    Nov 27 2018 18:02:59 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/30/2018 due to a planned outage. Operational Information Active
    Nov 27 2018 18:00:32 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/28/2018 due to a planned outage. Operational Information Cancelled
    Nov 27 2018 08:45:30 CST The Daily RSASM for Tuesday, November 27, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 27 2018 00:38:03 CST No sudden loss of generation greater than 450 MW occurred on November 26, 2018. Operational Information Active
    Nov 27 2018 00:00:31 CST ERCOT has cancelled the following notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
    Nov 26 2018 16:19:17 CST DC Tie Curtailment Notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
    Nov 26 2018 16:14:54 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/28/2018 due to a planned outage. Operational Information Active
    Nov 26 2018 16:12:00 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 20:00 11/26/2018 due to a forced outage. Extended from 18:00 to 20:00 due to Repairs not complete Operational Information Cancelled
    Nov 26 2018 08:45:15 CST The Daily RSASM for Monday, November 26, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 26 2018 05:30:01 CST No sudden loss of generation greater than 450 MW occurred on November 25, 2018. Operational Information Active
    Nov 25 2018 15:52:10 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/26/2018 due to a forced outage. Operational Information Cancelled
    Nov 25 2018 15:51:02 CST The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 20:00 11/26/2018 due to a forced outage. Extended from 18:00 to 20:00 due to Repairs not complete Operational Information Active
    Nov 25 2018 08:47:32 CST The Daily RSASM for Sunday November 25, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 25 2018 04:29:12 CST No sudden loss of generation greater than 450 MW occurred on November 24, 2018. Operational Information Active
    Nov 24 2018 08:51:19 CST The Daily RSASM for Saturday November 24, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 24 2018 06:26:14 CST No sudden loss of generation greater than 450 MW occurred on November 23, 2018. Operational Information Active
    Nov 23 2018 08:47:49 CST The Daily RSASM for Friday November 23, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 23 2018 02:38:09 CST No sudden loss of generation greater than 450 MW occurred on November 22, 2018. Operational Information Active
    Nov 22 2018 08:52:44 CST The Daily RSASM for Thursday November 22, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 22 2018 00:23:26 CST No sudden loss of generation greater than 450 MW occurred on November 21, 2018. Operational Information Active
    Nov 22 2018 00:09:20 CST ERCOT has cancelled the following notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
    Nov 21 2018 17:01:22 CST DC Tie Curtailment Notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
    Nov 21 2018 15:03:55 CST The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/26/2018 due to a forced outage. Operational Information Active
    Nov 21 2018 15:03:13 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/21/2018 due to a forced outage. Operational Information Cancelled
    Nov 21 2018 08:46:31 CST The Daily RSASM for Wednesday, November 21, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 21 2018 02:57:41 CST ERCOT has cancelled the following notice: ERCOT has disabled RAP ERCOT ID:RAP_2018_01 Rev.1 for Ennis West Sw.-Trumbul-Red Oak-Desoto Sw. 138 kv line due to planned outages in the area. Operational Information Cancelled
    Nov 21 2018 00:11:24 CST No sudden loss of generation greater than 450 MW occurred on November 20, 2018. Operational Information Active
    Nov 20 2018 09:40:20 CST ERCOT has cancelled the following notice: The B_Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Nov 20 2018 08:46:54 CST The Daily RSASM for Tuesday, November 20, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 20 2018 07:20:48 CST The B_Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Nov 20 2018 01:22:56 CST No sudden loss of generation greater than 450 MW occurred on November 19, 2018. Operational Information Active
    Nov 20 2018 01:22:26 CST No sudden loss of generation greater than 450 MW occurred on November 18, 2018. Operational Information Active
    Nov 19 2018 16:53:56 CST The minimum monthly Ancillary Services quantities have been posted to the ERCOT Market Information System (MIS) under the Projected Ancillary Service Requirements link under the Medium-Term System Adequacy heading. The posted quantities reflect minimum requirements only. ERCOT will follow-up with a Notification if any upward adjustments to these minimum quantities are made. https://mis.ercot.com/pps/tibco/mis/Pages/Grid+Information/Forecasts AS Postings Active
    Nov 19 2018 08:47:21 CST The Daily RSASM for Monday, November 19, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 18 2018 08:46:23 CST The Daily RSASM for Sunday, November 18, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 18 2018 00:11:14 CST No sudden loss of generation greater than 450 MW occurred on November 17, 2018. Operational Information Active
    Nov 17 2018 21:49:38 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 16:00 11/17/2018 through 16:00 11/21/2018 due to a forced outage. Operational Information Cancelled
    Nov 17 2018 21:49:27 CST DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 23:00 11/30/2018 due to a forced outage. Operational Information Active
    Nov 17 2018 15:58:03 CST DC Tie Outage: The East DC Tie will be unavailable from 16:00 11/17/2018 through 16:00 11/21/2018 due to a forced outage. Operational Information Active
    Nov 17 2018 15:57:21 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 14:45 11/17/2018 through 16:00 11/18/2018 due to a forced outage. Operational Information Cancelled
    Nov 17 2018 14:46:45 CST DC Tie Outage: The East DC Tie will be unavailable from 14:45 11/17/2018 through 16:00 11/18/2018 due to a forced outage. Operational Information Active
    Nov 17 2018 14:46:00 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 21:10 11/16/2018 through 00:00 11/18/2018 due to a forced outage. Operational Information Cancelled
    Nov 17 2018 08:46:30 CST The Daily RSASM for Saturday, November 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 17 2018 04:53:53 CST No sudden loss of generation greater than 450 MW occurred on November 16, 2018. Operational Information Active
    Nov 16 2018 23:55:08 CST ERCOT has cancelled the following notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
    Nov 16 2018 23:52:15 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 21:10 11/16/2018 through 00:00 11/17/2018 due to a forced outage. Operational Information Cancelled
    Nov 16 2018 23:51:45 CST DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 00:00 11/18/2018 due to a forced outage. Operational Information Active
    Nov 16 2018 21:28:17 CST DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 00:00 11/17/2018 due to a forced outage. Operational Information Active
    Nov 16 2018 15:58:39 CST The Barney Davis RAS is back in service. Operational Information Active
    Nov 16 2018 15:04:50 CST DC Tie Curtailment Notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
    Nov 16 2018 15:00:17 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:00 11/16/2018 through 18:00 11/21/2018 due to a forced outage. Operational Information Active
    Nov 16 2018 08:46:18 CST The Daily RSASM for Friday, November 16, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 16 2018 00:30:58 CST No sudden loss of generation greater than 450 MW occurred on November 15, 2018. Operational Information Active
    Nov 15 2018 15:07:46 CST ERCOT has cancelled the following notice: The ESKOTA RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Nov 15 2018 14:35:24 CST DC Tie Outage: The South, Eagle Pass DC Tie will be unavailable from 14:30 11/15/2018 through 16:00 11/30/2018 due to a forced outage. Operational Information Active
    Nov 15 2018 14:33:53 CST ERCOT has cancelled the following notice: The South DC Tie will be unavailable from 16:00 11/11/2018 through 18:00 11/16/2018 due to a planned outage. Operational Information Cancelled
    Nov 15 2018 09:13:15 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Nov 15, 2018 is available. Operational Instruction Active
    Nov 15 2018 08:46:39 CST The Daily RSASM for Thursday, November 15, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 15 2018 01:02:41 CST On Nov 14, 2018 a sudden loss of generation occurred at 22:30 totaling 832 MW. Frequency declined to 59.91 Hz, ERCOT load was 45, 129 MW. Note: Unit ran back 400mw before tripping @ 432Mw. Operational Information Active
    Nov 15 2018 01:00:48 CST ERCOT has cancelled the following notice: On Nov 14, 2018 a sudden loss of generation occurred at 22:30 totaling 832 MW. Frequency declined to 59.91 Hz, ERCOT load was 45, 129 MW. Operational Information Cancelled
    Nov 15 2018 00:32:25 CST On Nov 14, 2018 a sudden loss of generation occurred at 22:30 totaling 832 MW. Frequency declined to 59.91 Hz, ERCOT load was 45, 129 MW. Operational Information Active
    Nov 14 2018 08:48:53 CST The Daily RSASM for Wednesday November 14, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 14 2018 08:16:22 CST The ESKOTA RAS has been taken out of service/removed from RTCA. Operational Information Active
    Nov 14 2018 05:38:28 CST ERCOT has disabled RAP ERCOT ID:RAP_2018_01 Rev.1 for Ennis West Sw.-Trumbul-Red Oak-Desoto Sw. 138 kv line due to planned outages in the area. Operational Information Active
    Nov 14 2018 02:16:24 CST No sudden loss of generation greater than 450 MW occurred on November 13, 2018. Operational Information Active
    Nov 13 2018 23:06:39 CST ERCOT has cancelled the following notice: At 0300, ERCOT is issuing an OCN for Nov 13, 2018 for a projected Reserve Capacity Shortage for HE 19 to HE 23. ERCOT may and will commit Resources as needed. Operational Information Cancelled
    Nov 13 2018 21:33:52 CST ERCOT will execute a SASM at 22:05 for operating day November 14, 2018 for 9.4 MW RRS for HE 07, 08, 09 and 10. Operational Information Active
    Nov 13 2018 20:27:47 CST ERCOT has cancelled the following notice: TEST POST. AS Postings Cancelled
    Nov 13 2018 20:10:48 CST TEST POST. AS Postings Active
    Nov 13 2018 08:48:42 CST The Daily RSASM for Tuesday November 13, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 13 2018 05:44:03 CST No sudden loss of generation greater than 450 MW occurred on November 12, 2018. Operational Information Active
    Nov 13 2018 03:12:51 CST At 0300, ERCOT is issuing an OCN for Nov 13, 2018 for a projected Reserve Capacity Shortage for HE 19 to HE 23. ERCOT may and will commit Resources as needed. Operational Information Active
    Nov 12 2018 15:22:13 CST ERCOT will execute a SASM at 15:50 for operating day 11/12/2018 for HE18 RRS 6.2 MW, HE19-22 RRS 6.3 MW, HE23 RRS 6.5 MW, HE24 RRS 6.4 MW. Operational Information Active
    Nov 12 2018 08:48:15 CST The Daily RSASM for Monday November 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 12 2018 00:10:22 CST No sudden loss of generation greater than 450 MW occurred on November 11, 2018. Operational Information Active
    Nov 11 2018 16:22:59 CST DC Tie Outage: The South DC Tie will be unavailable from 16:00 11/11/2018 through 18:00 11/16/2018 due to a planned outage. Operational Information Active
    Nov 11 2018 08:46:58 CST The Daily RSASM for Sunday , November 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 11 2018 00:32:48 CST On Nov 10, 2018 a sudden loss of generation occurred at 09:25 totaling 513 MW. Frequency declined to 59.905 Hz, ERCOT load was 39, 923 MW. Operational Information Active
    Nov 10 2018 09:28:35 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Nov 10 2018 09:25:27 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Nov 10 2018 08:48:00 CST The Daily RSASM for Saturday , November 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 10 2018 00:48:55 CST No sudden loss of generation greater than 450 MW occurred on November 9, 2018. Operational Information Active
    Nov 09 2018 08:47:01 CST The Daily RSASM for Friday, November 9, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 09 2018 03:26:34 CST No sudden loss of generation greater than 450 MW occurred on November 8, 2018. Operational Information Active
    Nov 08 2018 16:28:49 CST At 16:23 ERCOT will be working from the Alternate Control Center until further notice, use the OPX numbers for Bastrop. Operational Information Active
    Nov 08 2018 08:47:33 CST The Daily RSASM for Thursday, November 8, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 08 2018 01:52:01 CST No sudden loss of generation greater than 450 MW occurred on November 7, 2018. Operational Information Active
    Nov 07 2018 08:46:20 CST The Daily RSASM for Wednesday, November 7, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 07 2018 00:37:09 CST No sudden loss of generation greater than 450 MW occurred on November 6, 2018. Operational Information Active
    Nov 06 2018 11:14:30 CST DC Tie Outage: The Laredo VFTs DC Tie will be unavailable from 09:00 11/12/2018 through 16:00 11/16/2018 due to a planned outage. Operational Information Active
    Nov 06 2018 08:47:04 CST The Daily RSASM for Tuesday, November 6, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 06 2018 00:00:27 CST No sudden loss of generation greater than 450 MW occurred on November 5, 2018. Operational Information Active
    Nov 05 2018 20:12:10 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 18:00 through 20:00. ERCOT is requesting all QSE's to update their COPs. OCN Cancelled
    Nov 05 2018 08:54:38 CST Capacity Insufficiency: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 18:00 through 20:00. ERCOT is requesting all QSE's to update their COPs. OCN Active
    Nov 05 2018 08:47:15 CST The Daily RSASM for Monday, November 5, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 05 2018 00:00:30 CST No sudden loss of generation greater than 450 MW occurred on November 4, 2018. Operational Information Active
    Nov 04 2018 08:46:23 CST The Daily RSASM for Sunday, November 4, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 04 2018 00:01:02 CST No sudden loss of generation greater than 450 MW occurred on November 3, 2018. Operational Information Active
    Nov 03 2018 18:38:15 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Nov 03 2018 18:32:43 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Nov 03 2018 08:48:13 CST The Daily RSASM for Saturday, November 3, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 03 2018 00:00:23 CST No sudden loss of generation greater than 450 MW occurred on November 2, 2018. Operational Information Active
    Nov 02 2018 15:24:49 CST DC Tie Outage: The Eagle Pass DC Tie will be unavailable from 07:30 11/05/2018 through 18:00 11/16/2018 due to a planned outage. Operational Information Active
    Nov 02 2018 15:22:08 CST ERCOT has cancelled the following notice: The Eagle Pass DC Tie will be unavailable from 07:30 11/05/2018 through 17:30 11/08/2018 due to a planned outage. Operational Information Cancelled
    Nov 02 2018 14:22:45 CST The South DC Tie (Eagle Pass) will be unavailable from 16:00 11/01/2018 through 18:00 11/16/2018 due to a forced outage. Operational Information Active
    Nov 02 2018 14:22:22 CST ERCOT has cancelled the following notice: The South DC Tie will be unavailable from 16:00 11/01/2018 through 18:00 11/02/2018 due to a forced outage. Operational Information Cancelled
    Nov 02 2018 08:48:13 CST The Daily RSASM for Friday, November 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 02 2018 03:02:19 CST ERCOT has cancelled the following notice: ERCOT will execute a SASM at 02:15 for operating day 11/02/18 for HE 04-12 for NSPIN 8.4 MW. Operational Information Cancelled
    Nov 02 2018 01:50:06 CST ERCOT will execute a SASM at 02:15 for operating day 11/02/18 for HE 04-12 for NSPIN 8.4 MW. Operational Information Active
    Nov 02 2018 01:49:04 CST ERCOT has cancelled the following notice: ERCOT will execute a SASM at 02:10 for operating day 11/2/18 for HE 02-12 for 8.4 MW NSPIN. Operational Information Cancelled
    Nov 02 2018 01:47:51 CST ERCOT will execute a SASM at 02:10 for operating day 11/2/18 for HE 02-12 for 8.4 MW NSPIN. Operational Information Active
    Nov 02 2018 01:23:21 CST No sudden loss of generation greater than 450 MW occurred on November 1, 2018. Operational Information Active
    Nov 01 2018 16:55:40 CST DC Tie Outage: The South DC Tie will be unavailable from 16:00 11/01/2018 through 18:00 11/02/2018 due to a forced outage. Operational Information Active
    Nov 01 2018 16:54:10 CST ERCOT has cancelled the following notice: The DC_S DC Tie will be unavailable from 12:00 10/29/2018 through 17:00 11/02/2018 due to a forced outage. Operational Information Cancelled
    Nov 01 2018 11:50:31 CST DC Tie Outage: The Eagle Pass DC Tie will be unavailable from 07:30 11/05/2018 through 17:30 11/08/2018 due to a planned outage. Operational Information Active
    Nov 01 2018 09:02:47 CST DC Tie Outage: The LAREDO VFT DC Tie will be unavailable from 09:00 11/05/2018 through 16:00 11/09/2018 due to a planned outage. Operational Information Active
    Nov 01 2018 08:46:47 CST The Daily RSASM for Thursday, November 1, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 01 2018 01:33:24 CST No sudden loss of generation greater than 450 MW occurred on October 31, 2018. Operational Information Active