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.

    Feb 2018 Mar 2018 Apr 2018 May 2018 Jun 2018 Jul 2018
    Date Message Type Status
    Jul 20 2018 11:08:21 CST Notification of Prices Under Investigation: Notification of DAM prices under investigation. ERCOT is investigating the Day-Ahead Prices for hours ending 14:00 through 18:00 of Operating Day 07/20/2018. A follow-up notice will be sent out as soon as the investigation is completed. If the price correction is needed for Operating Day 07/20/2018, it will be posted by 1000 of 07/24/2018. Alert Active
    Jul 20 2018 11:05:49 CST Notification of Prices Under Investigation: Notification of SCED prices under investigation. ERCOT is investigating the Real-Time Prices for the settlement intervals 16:30 - 18:30 of operating day 07/18/2018. A follow-up notice will be sent out as soon as the investigation is completed. If the price correction is needed for Operating Day 07/18/2018, it will be posted by 1600 of 07/20/2018. Alert Active
    Jul 20 2018 09:19:12 CST ERCOT has cancelled the following notice: At 19:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 18-25, 2018. Operational Information Cancelled
    Jul 20 2018 09:18:44 CST At 09:30, ERCOT is issuing an Advisory for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 20-24, 2018. Operational Information Active
    Jul 20 2018 08:47:10 CST The Daily RSASM for Friday July 20, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 20 2018 07:16:34 CST Railroad DC Tie will be unavailable Saturday 7/21/2018 08:00-18:00 due to M2 Transmission outage. Operational Information Active
    Jul 20 2018 01:49:57 CST No sudden loss of generation greater than 450 MW occurred on July 19, 2018 Operational Information Active
    Jul 19 2018 18:30:12 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 19 2018 17:31:44 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 09:00 07/21/2018 through 16:00 07/21/2018 due to a planned outage. Operational Information Active
    Jul 19 2018 17:17:44 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:52 07/19/2018 through 18:00 07/19/2018 due to a planned outage. Operational Information Cancelled
    Jul 19 2018 16:28:44 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Jul 19, 2018 is available. Operational Instruction Active
    Jul 19 2018 16:09:52 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:52 07/19/2018 through 18:00 07/19/2018 due to a planned outage. Operational Information Active
    Jul 19 2018 16:00:00 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 19 2018 08:50:41 CST The Daily RSASM for Thursday July 19, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 19 2018 00:06:32 CST On 7/18/2018 a sudden loss of generation occurred at 17:44 totaling 494.83 MW. Frequency declined to 59.891 Hz, ERCOT load was 72, 251 MW. Operational Information Active
    Jul 18 2018 18:29:53 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 18 2018 17:48:29 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jul 18 2018 17:45:05 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jul 18 2018 15:42:02 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 18 2018 08:47:06 CST The Daily RSASM for Wednesday, July 18, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 18 2018 00:25:46 CST No sudden loss of generation greater than 450 MW occurred on July 17, 2018 Operational Information Active
    Jul 17 2018 21:56:54 CST ERCOT has cancelled the following notice: At 18:55, ERCOT is issuing a Transmission Watch for the Eagle Pass Dc Tie due to schedule exceeding limits. This may result in the curtailment of DC-Tie exports to CENACE. Watch Cancelled
    Jul 17 2018 19:02:42 CST At 18:55, ERCOT is issuing a Transmission Watch for the Eagle Pass Dc Tie due to schedule exceeding limits. This may result in the curtailment of DC-Tie exports to CENACE. Watch Active
    Jul 17 2018 18:42:12 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
    Jul 17 2018 08:46:58 CST The Daily RSASM for Tuesday, July 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 17 2018 00:21:52 CST No sudden loss of generation greater than 450 MW occurred on July 16, 2018 Operational Information Active
    Jul 16 2018 08:51:04 CST The Daily RSASM for Monday, July 16, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 16 2018 00:19:41 CST No sudden loss of generation greater than 450 MW occurred on July 15, 2018 Operational Information Active
    Jul 15 2018 08:48:20 CST The Daily RSASM for Sunday, July 15, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 15 2018 00:12:19 CST No sudden loss of generation greater than 450 MW occurred on July 14, 2018 Operational Information Active
    Jul 14 2018 18:55:14 CST At 19:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 18-25, 2018. Operational Information Active
    Jul 14 2018 08:46:42 CST The Daily RSASM for Saturday, July 14, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 14 2018 01:18:08 CST No sudden loss of generation greater than 450 MW occurred on July 13, 2018 Operational Information Active
    Jul 13 2018 08:47:54 CST The Daily RSASM for Friday, July 13, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 13 2018 00:19:48 CST No sudden loss of generation greater than 450 MW occurred on July 12, 2018 Operational Information Active
    Jul 12 2018 21:19:40 CST ERCOT has cancelled the following notice: The Railroad DC Tie has completed the de-rate and is now available at 290mw's as of 17:23 7/12/2018 Operational Information Cancelled
    Jul 12 2018 17:25:21 CST The Railroad DC Tie has completed the de-rate and is now available at 290mw's as of 17:23 7/12/2018 Operational Information Active
    Jul 12 2018 16:11:44 CST Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Jul 12, 2018 is available. Operational Instruction Active
    Jul 12 2018 08:46:52 CST The Daily RSASM for Thursday, July 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 12 2018 00:34:48 CST No sudden loss of generation greater than 450 MW occurred on July 11, 2018 Operational Information Active
    Jul 11 2018 08:49:09 CST The Daily RSASM for Wednesday July 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 11 2018 01:23:15 CST No sudden loss of generation greater than 450 MW occurred on July 10, 2018 Operational Information Active
    Jul 10 2018 08:50:00 CST The Daily RSASM for Tuesday July 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 10 2018 05:36:35 CST No sudden loss of generation greater than 450 MW occurred on July 9, 2018 Operational Information Active
    Jul 09 2018 08:47:53 CST The Daily RSASM for Monday July 9, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 09 2018 00:26:37 CST No sudden loss of generation greater than 450 MW occurred on July 8, 2018 Operational Information Active
    Jul 08 2018 08:47:28 CST The Daily RSASM for Sunday, July 8, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 08 2018 02:09:08 CST No sudden loss of generation greater than 450 MW occurred on July 7, 2018 Operational Information Active
    Jul 07 2018 08:46:46 CST The Daily RSASM for Saturday, July 7, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 07 2018 01:31:13 CST On July 6, 2018 a sudden loss of generation occurred at 13:10 totaling 813 MW. Frequency declined to 59.888 Hz, ERCOT load was 59, 888 MW. Operational Information Active
    Jul 06 2018 13:15:00 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jul 06 2018 13:11:04 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jul 06 2018 08:46:48 CST The Daily RSASM for Friday, July 6, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 06 2018 00:04:18 CST No sudden loss of generation greater than 450 MW occurred on July 5, 2018 Operational Information Active
    Jul 05 2018 08:47:49 CST The Daily RSASM for Thursday, July 5, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 05 2018 01:02:43 CST No sudden loss of generation greater than 450 MW occurred on July 4, 2018. Operational Information Active
    Jul 04 2018 08:46:38 CST The Daily RSASM for Wednesday, July 4, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 04 2018 00:12:01 CST No sudden loss of generation greater than 450 MW occurred on July 3, 2018. Operational Information Active
    Jul 03 2018 08:48:44 CST The Daily RSASM for Tuesday, July 3, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 03 2018 02:12:33 CST No sudden loss of generation greater than 450 MW occurred on July 2, 2018. Operational Information Active
    Jul 02 2018 08:46:25 CST The Daily RSASM for Monday, July 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 02 2018 00:06:29 CST No sudden loss of generation greater than 450 MW occurred on July 1, 2018. Operational Information Active
    Jul 01 2018 08:46:54 CST The Daily RSASM for Sunday, July 01, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 01 2018 00:01:35 CST No sudden loss of generation greater than 450 MW occurred on June 30, 2018. Operational Information Active