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.

    Apr 2018 May 2018 Jun 2018 Jul 2018 Aug 2018 Sep 2018
    Date Message Type Status
    Sep 18 2018 08:50:19 CST The Daily RSASM for Tuesday, September 18, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 18 2018 08:48:58 CST ERCOT has cancelled the following notice: The Daily RSASM for Monday, September 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Cancelled
    Sep 18 2018 08:48:30 CST The Daily RSASM for Monday, September 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 18 2018 01:23:15 CST No sudden loss of generation greater than 450 MW occurred on September 17, 2018. Operational Information Active
    Sep 17 2018 15:10:09 CST ERCOT has cancelled the following notice: The DC_S DC Tie will be unavailable from 19:44 09/14/2018 through 17:00 09/17/2018 due to a forced outage. Operational Information Cancelled
    Sep 17 2018 08:51:08 CST The Daily RSASM for Monday, September 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 17 2018 07:59:41 CST The B_DAVIS RAS has been taken out of service. Operational Information Active
    Sep 17 2018 05:40:33 CST DC Tie Outage: The DC_S DC Tie will be unavailable from 19:44 09/14/2018 through 17:00 09/17/2018 due to a forced outage. Operational Information Active
    Sep 17 2018 05:38:52 CST ERCOT has cancelled the following notice: The DC_S DC Tie will be unavailable from 19:44 09/14/2018 through 12:00 09/17/2018 due to a forced outage. Operational Information Cancelled
    Sep 17 2018 00:11:26 CST No sudden loss of generation greater than 450 MW occurred on September 16, 2018. Operational Information Active
    Sep 16 2018 18:02:49 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 16 2018 15:23:25 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 16 2018 08:45:44 CST The Daily RSASM for Sunday, September 16, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 16 2018 00:28:05 CST No sudden loss of generation greater than 450 MW occurred on September 15, 2018. Operational Information Active
    Sep 16 2018 00:13:30 CST ERCOT has cancelled the following notice: CORRECTION for 09/14/2018 posting - On 9/14/18 at 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Sep 15 2018 08:47:42 CST The Daily RSASM for Saturday, September 15, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 15 2018 01:26:10 CST CORRECTION for 09/14/2018 posting - On 9/14/18 at 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Sep 15 2018 01:23:09 CST ERCOT has cancelled the following notice: At 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Sep 15 2018 00:30:40 CST No sudden loss of generation greater than 450 MW occurred on September 14, 2018. Operational Information Active
    Sep 14 2018 20:33:19 CST ERCOT has cancelled the following notice: At 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Sep 14 2018 20:33:04 CST At 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Sep 14 2018 20:14:01 CST DC Tie Outage: The DC_S DC Tie will be unavailable from 19:44 09/14/2018 through 12:00 09/17/2018 due to a forced outage. Operational Information Active
    Sep 14 2018 20:03:22 CST At 19:52, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to trip. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Sep 14 2018 08:46:17 CST The Daily RSASM for Friday, September 14, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 14 2018 00:00:11 CST No sudden loss of generation greater than 450 MW occurred on September 13, 2018. Operational Information Active
    Sep 13 2018 20:39:50 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 13 2018 15:44:23 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 13 2018 08:45:43 CST The Daily RSASM for Thursday, September 13, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 13 2018 00:00:10 CST No sudden loss of generation greater than 450 MW occurred on September 12, 2018. Operational Information Active
    Sep 12 2018 17:54:59 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 12 2018 14:22:19 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 12 2018 08:47:08 CST The Daily RSASM for Wednesday, September 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 12 2018 00:08:33 CST No sudden loss of generation greater than 450 MW occurred on September 11, 2018. Operational Information Active
    Sep 11 2018 16:26:25 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Sep 11 2018 16:22:41 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Sep 11 2018 08:46:42 CST The Daily RSASM for Tuesday, September 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 11 2018 00:01:37 CST No sudden loss of generation greater than 450 MW occurred on September 10, 2018. Operational Information Active
    Sep 10 2018 08:49:34 CST The Daily RSASM for Monday, September 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 10 2018 00:19:54 CST No sudden loss of generation greater than 450 MW occurred on September 9, 2018. Operational Information Active
    Sep 09 2018 16:52:34 CST The Daily RSASM for Sunday September 9, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 09 2018 00:14:23 CST No sudden loss of generation greater than 450 MW occurred on September 8, 2018. Operational Information Active
    Sep 08 2018 08:48:29 CST The Daily RSASM for Saturday September 8, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 08 2018 00:17:42 CST No sudden loss of generation greater than 450 MW occurred on September 7, 2018. Operational Information Active
    Sep 07 2018 16:13:58 CST ERCOT has cancelled the following notice: The Railroad DC tie is derated to 150mw from 09/06/18 00:00 through 09/12/18 17:00 Operational Information Cancelled
    Sep 07 2018 08:48:27 CST The Daily RSASM for Friday September 7, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 07 2018 04:28:20 CST ERCOT has cancelled the following notice: As of 16:22 ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Cancelled
    Sep 07 2018 00:04:16 CST No sudden loss of generation greater than 450 MW occurred on September 6, 2018. Operational Information Active
    Sep 06 2018 18:11:04 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 18:00. ERCOT is requesting all QSE's to update their COPs. OCN Cancelled
    Sep 06 2018 16:27:59 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Sep 06, 2018 is available. Operational Instruction Active
    Sep 06 2018 16:27:04 CST As of 16:22 ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
    Sep 06 2018 08:47:33 CST The Daily RSASM for Thursday September 6, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 06 2018 00:27:57 CST Capacity Insufficiency: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 18:00. ERCOT is requesting all QSE's to update their COPs. OCN Active
    Sep 06 2018 00:05:57 CST No sudden loss of generation greater than 450 MW occurred on September 5, 2018. Operational Information Active
    Sep 05 2018 16:14:09 CST The Railroad DC tie is derated to 150mw from 09/06/18 00:00 through 09/12/18 17:00 Operational Information Active
    Sep 05 2018 12:15:41 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 10:05 09/05/2018 through 23:59 09/05/2018 due to a forced outage. Operational Information Cancelled
    Sep 05 2018 12:06:00 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Watch for the Laredo DC Tie (DC_L) due to the tie tripping offline. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Sep 05 2018 10:06:10 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 10:05 09/05/2018 through 23:59 09/05/2018 due to a forced outage. Operational Information Active
    Sep 05 2018 08:45:18 CST The Daily RSASM for Wednesday September 5, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 05 2018 07:32:45 CST ERCOT is issuing a Transmission Watch for the Laredo DC Tie (DC_L) due to the tie tripping offline. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Sep 05 2018 00:06:40 CST On September 4, 2018, a sudden loss of generation occurred at 19:30 totaling 847 MW. Frequency declined to 59.840 Hz, ERCOT load was 54, 991 MW. Operational Information Active
    Sep 04 2018 19:34:10 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Sep 04 2018 19:30:26 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Sep 04 2018 11:12:39 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Watch for the Railroad DC Tie (DC_R) due to local congestion. This may result in the curtailment of DC-Tie exports to CENACE Operational Information Cancelled
    Sep 04 2018 11:12:32 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Watch for the Railroad DC Tie (DC_R) due to local congestion. This may result in the curtailment of DC-Tie exports to CENACE Operational Information Cancelled
    Sep 04 2018 10:10:52 CST ERCOT is issuing a Transmission Watch for the Railroad DC Tie (DC_R) due to local congestion. This may result in the curtailment of DC-Tie exports to CENACE Operational Information Active
    Sep 04 2018 08:47:16 CST The Daily RSASM for Tuesday September 4, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 04 2018 00:13:57 CST No sudden loss of generation greater than 450 MW occurred on September 3, 2018. Operational Information Active
    Sep 03 2018 15:21:01 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Watch for the Railroad DC Tie (DC_R) due to local congestion. This may result in the curtailment of DC-Tie exports to CENACE Watch Cancelled
    Sep 03 2018 11:17:35 CST ERCOT is issuing a Transmission Watch for the Railroad DC Tie (DC_R) due to local congestion. This may result in the curtailment of DC-Tie exports to CENACE Watch Active
    Sep 03 2018 08:46:19 CST The Daily RSASM for Monday September 3, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Sep 03 2018 00:31:09 CST No sudden loss of generation greater than 450 MW occurred on September 2, 2018. Operational Information Active
    Sep 02 2018 08:47:57 CST The Daily RSASM for Sunday September 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 02 2018 01:04:44 CST On September 1, 2018 a sudden loss of generation occurred at 10:38 totaling 634 MW. Frequency declined to 59.896 Hz, ERCOT load was 51, 137 MW. Operational Information Active
    Sep 01 2018 10:43:22 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Sep 01 2018 10:38:38 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Sep 01 2018 08:48:39 CST The Daily RSASM for Saturday September 1, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 01 2018 00:30:36 CST On August 31, 2018 a sudden loss of generation occurred at 12:03 totaling 526 MW. Frequency declined to 59.902 Hz, ERCOT load was 59, 328 MW. Another unit tripped at 22:33 totaling 647 MW. Frequency declined to 59.908 Hz, ERCOT load was 54, 029 MW Operational Information Active