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.

    Jun 2017 Jul 2017 Aug 2017 Sep 2017 Oct 2017 Nov 2017
    Date Message Type Status
    Nov 24 2017 08:45:57 CST The Daily RSASM for Friday, November 24, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 24 2017 00:00:30 CST No sudden loss of generation greater than 450 MW occurred on November 23, 2017. Operational Information Active
    Nov 23 2017 08:47:40 CST The Daily RSASM for Thursday, November 23, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 23 2017 00:03:09 CST No sudden loss of generation greater than 450 MW occurred on November 22, 2017. Operational Information Active
    Nov 22 2017 08:47:23 CST The Daily RSASM for Wednesday, November 22, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 22 2017 00:05:06 CST No sudden loss of generation greater than 450 MW occurred on November 21, 2017. Operational Information Active
    Nov 21 2017 08:51:01 CST The Daily RSASM for Tuesday, November 21, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 21 2017 00:09:39 CST No sudden loss of generation greater than 450 MW occurred on November 20, 2017. Operational Information Active
    Nov 20 2017 12:42:43 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service. Operational Information Cancelled
    Nov 20 2017 10:05:52 CST The Barney Davis RAS has been taken out of service. Operational Information Active
    Nov 20 2017 08:51:01 CST The Daily RSASM for Monday, November 20, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 20 2017 02:34:32 CST No sudden loss of generation greater than 450 MW occurred on November 19, 2017. Operational Information Active
    Nov 19 2017 08:48:39 CST The Daily RSASM for Sunday, November 19, 2017 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 19 2017 00:05:44 CST On Nov 18, 2017 a sudden loss of generation occurred at 02:30 totaling 468.02 MW. Frequency declined to 59.882 Hz, ERCOT load was 31, 671 MW Operational Information Active
    Nov 18 2017 08:53:11 CST The Daily RSASM for Saturday, November 18, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 18 2017 03:58:10 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 18 2017 02:34:11 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Nov 18 2017 02:30:43 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Nov 18 2017 00:52:20 CST No sudden loss of generation greater than 450 MW occurred on November 17, 2017. Operational Information Active
    Nov 17 2017 08:49:46 CST The Daily RSASM for Friday, November 17, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 17 2017 02:01:11 CST No sudden loss of generation greater than 450 MW occurred on November 16, 2017. Operational Information Active
    Nov 16 2017 15:23:36 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Nov 16, 2017 is available. Operational Instruction Active
    Nov 16 2017 08:49:33 CST The Daily RSASM for Thursday, November 16, 2017 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 16 2017 04:28:06 CST No sudden loss of generation greater than 450 MW occurred on November 15, 2017. Operational Information Active
    Nov 15 2017 15:38:42 CST The Eagle Pass DC (DC_EGPS) Tie will be unavailable due to planned line outage 11/27/2017 - 11/29/2017 from 09:00 to 16:00 daily. Operational Information Active
    Nov 15 2017 11:36:42 CST HVDC Tie East has returned to service and is available for scheduling, import/export, to 600MW! Operational Information Active
    Nov 15 2017 11:31:35 CST ERCOT has cancelled the following notice: The DC_E (Welsh) DC Tie will be unavailable from 11/12/2017 @ 2136 through 11/20/2017 @ 1830 due to a forced outage. Operational Information Cancelled
    Nov 15 2017 08:52:00 CST The Daily RSASM for Wednesday, November 15, 2017 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 15 2017 02:32:42 CST No sudden loss of generation greater than 450 MW occurred on November 14, 2017. Operational Information Active
    Nov 14 2017 08:47:22 CST The Daily RSASM for Tuesday, November 14, 2017 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 14 2017 00:38:28 CST On Nov 13, 2017 a sudden loss of generation occurred at 15:16 totaling 659.70 MW. Frequency declined to 59.867 Hz, ERCOT load was 39, 820 MW Operational Information Active
    Nov 13 2017 15:19:56 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Nov 13 2017 15:16:20 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Nov 13 2017 12:18:51 CST ERCOT has cancelled the following notice: The DC_E (Welsh) DC Tie will be unavailable from 21:00 11/12/2017 through 23:59 11/13/2017 due to a forced outage. Operational Information Cancelled
    Nov 13 2017 09:57:40 CST The DC_E (Welsh) DC Tie will be unavailable from 11/12/2017 @ 2136 through 11/20/2017 @ 1830 due to a forced outage. Operational Information Active
    Nov 13 2017 08:48:31 CST The Daily RSASM for Monday, November 13, 2017 will not be occurring due to zero participating QSEs Operational Information Active
    Nov 13 2017 00:51:22 CST No sudden loss of generation greater than 450 MW occurred on November 12, 2017. Operational Information Active
    Nov 12 2017 23:59:34 CST DC Tie Outage: The DC_E (Welsh) DC Tie will be unavailable from 21:00 11/12/2017 through 23:59 11/13/2017 due to a forced outage. Operational Information Active
    Nov 12 2017 21:03:01 CST DC Tie Outage: The DC_E (Welsh) DC Tie will be unavailable from 21:00 11/12/2017 through 23:59 11/12/2017 due to a forced outage. Operational Information Active
    Nov 12 2017 08:46:55 CST The Daily RSASM for Sunday, November 12, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 12 2017 00:07:51 CST No sudden loss of generation greater than 450 MW occurred on November 11, 2017. Operational Information Active
    Nov 11 2017 22:16:31 CST The Daily RSASM for Saturday November 11, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 11 2017 22:15:55 CST The Daily RSASM for Friday November 10, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 11 2017 02:43:20 CST No sudden loss of generation greater than 450 MW occurred on November 10, 2017. Operational Information Active
    Nov 10 2017 15:05:20 CST The Laredo DC Tie has been returned to service. Operational Information Active
    Nov 10 2017 04:30:10 CST As of 04:25 on 11/10, ERCOT is working from the Primary Control Center. Operational Information Active
    Nov 10 2017 04:29:03 CST ERCOT has cancelled the following notice: ERCOT is working from alternate control center. Operational Information Cancelled
    Nov 10 2017 00:44:20 CST No sudden loss of generation greater than 450 MW occurred on November 9, 2017. Operational Information Active
    Nov 09 2017 16:23:48 CST ERCOT is working from alternate control center. Operational Information Active
    Nov 09 2017 16:08:20 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Nov 09, 2017 is available. Operational Instruction Active
    Nov 09 2017 08:47:34 CST The Daily RSASM for Thursday November 9, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 09 2017 00:21:03 CST No sudden loss of generation greater than 450 MW occurred on November 8, 2017. Operational Information Active
    Nov 08 2017 01:38:07 CST No sudden loss of generation greater than 450 MW occurred on November 7, 2017. Operational Information Active
    Nov 07 2017 15:20:28 CST ERCOT has cancelled the following notice: The DC_EGPS(Eagle Pass DC Tie) will be unavailable 11/07/17 09:00-16:00 due to Transmission Outage. Operational Information Cancelled
    Nov 07 2017 15:20:20 CST ERCOT has cancelled the following notice: HVDC Tie Eagle Pass (South) has forced extension of planned outage through 0859 11/07/17. Planned outage for 0900 to 1600 11/07/17 is still expected to be needed! Operational Information Cancelled
    Nov 07 2017 09:06:41 CST ERCOT has cancelled the following notice: At 17:05, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to equipment issues. Watch Cancelled
    Nov 07 2017 08:57:36 CST The Daily RSASM for Tuesday, November 7, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 07 2017 00:31:45 CST On Nov 06, 2017 a sudden loss of generation occurred at 09:08 totaling 549.45 MW. Frequency declined to 59.901 Hz, ERCOT load was 40, 655 MW. Operational Information Active
    Nov 06 2017 18:57:07 CST ERCOT has cancelled the following notice: The DC_EGPS(Eagle Pass DC Tie) will be unavailable 11/06/17 09:00-16:00 due to Transmission Outage. Operational Information Cancelled
    Nov 06 2017 18:53:10 CST HVDC Tie Eagle Pass (South) has forced extension of planned outage through 0859 11/07/17. Planned outage for 0900 to 1600 11/07/17 is still expected to be needed! Operational Information Active
    Nov 06 2017 17:13:02 CST At 17:05, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to equipment issues. Watch Active
    Nov 06 2017 09:11:58 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Nov 06 2017 09:08:30 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Nov 06 2017 08:48:16 CST The Daily RSASM for Monday, November 6, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 06 2017 00:34:54 CST No sudden loss of generation greater than 450 MW occurred on November 5, 2017. Operational Information Active
    Nov 05 2017 08:46:57 CST The Daily RSASM for Sunday, November 5, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 05 2017 00:04:49 CST No sudden loss of generation greater than 450 MW occurred on November 4, 2017. Operational Information Active
    Nov 04 2017 08:46:34 CST The Daily RSASM for Saturday, November 4, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 04 2017 01:10:02 CST No sudden loss of generation greater than 450 MW occurred on November 3, 2017. Operational Information Active
    Nov 03 2017 16:02:51 CST The Barney Davis RAS is back in service. Operational Information Active
    Nov 03 2017 08:46:56 CST The Daily RSASM for Friday, November 3, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 03 2017 00:34:04 CST No sudden loss of generation greater than 450 MW occurred on November 2, 2017. Operational Information Active
    Nov 02 2017 16:51:45 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Nov 02, 2017 is available. Operational Instruction Active
    Nov 02 2017 08:46:39 CST The Daily RSASM for Thursday, November 2, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 02 2017 00:11:29 CST No sudden loss of generation greater than 450 MW occurred on November 1, 2017. Operational Information Active
    Nov 01 2017 10:10:46 CST The DC_EGPS(Eagle Pass DC Tie) will be unavailable 11/06/17 09:00-16:00 due to Transmission Outage. Operational Information Active
    Nov 01 2017 10:03:43 CST The DC_EGPS(Eagle Pass DC Tie) will be unavailable 11/07/17 09:00-16:00 due to Transmission Outage. Operational Information Active
    Nov 01 2017 09:55:33 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the planned outage on the Jewett/Singleton double circuit 345 kv lines. Operational Information Cancelled
    Nov 01 2017 09:25:48 CST ERCOT is taking manual actions to pre-posture for the planned outage on the Jewett/Singleton double circuit 345 kv lines. Operational Information Active
    Nov 01 2017 08:49:06 CST The Daily RSASM for Wednesday November 1, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Nov 01 2017 03:21:59 CST No sudden loss of generation greater than 450 MW occurred on October 31, 2017. Operational Information Active