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 2019 Mar 2019 Apr 2019 May 2019 Jun 2019 Jul 2019
Date Message Type Status
Jun 30 2019 08:46:38 CST The Daily RSASM for Sunday, June 30, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 30 2019 00:24:10 CST No sudden loss of generation greater than 450 MW occurred on June 29, 2019 Operational Information Active
Jun 29 2019 15:34:04 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 01:47 06/29/2019 through 23:59 06/29/2019 due to a forced outage. Operational Information Cancelled
Jun 29 2019 08:46:18 CST The Daily RSASM for Saturday, June 29, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 29 2019 02:01:46 CST DC Tie Outage: The North DC Tie will be unavailable from 01:47 06/29/2019 through 23:59 06/29/2019 due to a forced outage. Operational Information Active
Jun 29 2019 00:40:36 CST No sudden loss of generation greater than 450 MW occurred on June 28, 2019. Operational Information Active
Jun 28 2019 11:41:45 CST ERCOT has cancelled the following notice: The Eagle Pass DC Tie will be unavailable from 14:49 06/27/2019 through 16:00 06/28/2019 due to a forced outage. Operational Information Cancelled
Jun 28 2019 08:46:29 CST The Daily RSASM for Friday, June 28, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 28 2019 00:09:04 CST No sudden loss of generation greater than 450 MW occurred on June 27, 2019. Operational Information Active
Jun 28 2019 00:07:51 CST ERCOT has cancelled the following notice: The Eagle Pass 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
Jun 28 2019 00:06:55 CST ERCOT has cancelled the following notice: The Eagle Pass 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
Jun 27 2019 17:57:54 CST DC Tie Curtailment Notice: The Eagle Pass 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
Jun 27 2019 15:01:18 CST DC Tie Outage: The Eagle Pass DC Tie will be unavailable from 14:49 06/27/2019 through 16:00 06/28/2019 due to a forced outage. Operational Information Active
Jun 27 2019 08:46:59 CST The Daily RSASM for Thursday, June 27, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 27 2019 00:03:10 CST No sudden loss of generation greater than 450 MW occurred on June 26, 2019. Operational Information Active
Jun 26 2019 08:45:48 CST The Daily RSASM for Wednesday June 26, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jun 26 2019 00:44:52 CST No sudden loss of generation greater than 450 MW occurred on June 25, 2019. Operational Information Active
Jun 25 2019 08:46:27 CST The Daily RSASM for Tuesday June 25, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jun 25 2019 00:02:38 CST No sudden loss of generation greater than 450 MW occurred on June 24, 2019. Operational Information Active
Jun 24 2019 08:46:26 CST The Daily RSASM for Monday June 24, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jun 24 2019 01:07:44 CST No sudden loss of generation greater than 450 MW occurred on June 23, 2019. Operational Information Active
Jun 23 2019 17:49:57 CST ERCOT has cancelled the following notice: The Daily RSASM for Sunday June 23, 2019 will not be occurring due to zero participating QSEs. Operational Information Cancelled
Jun 23 2019 17:49:08 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
Jun 23 2019 14:36:26 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
Jun 23 2019 08:48:13 CST The Daily RSASM for Sunday June 23, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 22 2019 08:47:07 CST The Daily RSASM for Saturday June 22, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 22 2019 08:28:20 CST No sudden loss of generation greater than 450 MW occurred on June 21, 2019. Operational Information Active
Jun 21 2019 08:47:45 CST The Daily RSASM for Friday June 21, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 21 2019 00:28:25 CST No sudden loss of generation greater than 450 MW occurred on June 20, 2019. Operational Information Active
Jun 20 2019 08:48:53 CST The Daily RSASM for Thursday June 20, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 20 2019 00:08:10 CST No sudden loss of generation greater than 450 MW occurred on June 19, 2019. Operational Information Active
Jun 19 2019 20:17:32 CST ERCOT has cancelled the following notice: The DC_S DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Cancelled
Jun 19 2019 19:17:17 CST DC Tie Curtailment Notice: The DC_S DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Active
Jun 19 2019 08:48:25 CST The Daily RSASM for Wednesday, June 19, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 19 2019 00:33:57 CST No sudden loss of generation greater than 450 MW occurred on June 18, 2019. Operational Information Active
Jun 18 2019 19:00:02 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
Jun 18 2019 18:57:37 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
Jun 18 2019 16:54:36 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
Jun 18 2019 08:48:55 CST The Daily RSASM for Tuesday, June 18, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 18 2019 05:16:21 CST ERCOT will execute a SASM at 05:45 for operating day Tuesday, 6/18/2019 for 9.9 MW REGUP for HE08, 09 and 10 and 4.4 MW REGDN for HE 09 and 10. Operational Information Active
Jun 18 2019 00:12:33 CST No sudden loss of generation greater than 450 MW occurred on June 17, 2019. Operational Information Active
Jun 17 2019 18:51:02 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
Jun 17 2019 17:45:01 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
Jun 17 2019 08:47:59 CST The Daily RSASM for Monday, June 17, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 17 2019 00:39:17 CST No sudden loss of generation greater than 450 MW occurred on June 16, 2019. Operational Information Active
Jun 16 2019 20:46:42 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 18:28 06/16/2019 through 00:00 06/17/2019 due to a forced outage. Operational Information Cancelled
Jun 16 2019 19:40:26 CST DC Tie Outage: The East DC Tie will be unavailable from 18:28 06/16/2019 through 00:00 06/17/2019 due to a forced outage. Operational Information Active
Jun 16 2019 08:46:12 CST The Daily RSASM for Sunday, June 16, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 16 2019 00:02:37 CST No sudden loss of generation greater than 450 MW occurred on June 15, 2019. Operational Information Active
Jun 15 2019 08:47:49 CST The Daily RSASM for Saturday, June 15, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 15 2019 01:47:46 CST No sudden loss of generation greater than 450 MW occurred on June 14, 2019. Operational Information Active
Jun 14 2019 08:46:15 CST The Daily RSASM for Friday, June 14, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 14 2019 00:49:30 CST No sudden loss of generation greater than 450 MW occurred on June 13, 2019. Operational Information Active
Jun 13 2019 08:46:04 CST The Daily RSASM for Thursday, June 13, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 13 2019 00:46:52 CST No sudden loss of generation greater than 450 MW occurred on June 12, 2019. Operational Information Active
Jun 12 2019 08:48:01 CST The Daily RSASM for Wednesday June 12, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 12 2019 00:52:21 CST No sudden loss of generation greater than 450 MW occurred on June 11, 2019. Operational Information Active
Jun 12 2019 00:02:37 CST ERCOT Emergency Base Points are Disabled Operational Information Cancelled
Jun 12 2019 00:02:21 CST ERCOT Emergency Base Points are Enabled Operational Information Active
Jun 11 2019 08:48:12 CST The Daily RSASM for Tuesday June 11, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 11 2019 00:57:18 CST No sudden loss of generation greater than 450 MW occurred on June 10, 2019. Operational Information Active
Jun 10 2019 08:49:09 CST The Daily RSASM for Monday June 10, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 10 2019 00:18:17 CST On June 09, 2019 a sudden loss of generation occurred at 19:35 totaling 503 MW. Frequency declined to 59.925 Hz, ERCOT load was 55, 883 MW Operational Information Active
Jun 09 2019 08:48:05 CST The Daily RSASM for Sunday, June 9, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 09 2019 01:54:58 CST No sudden loss of generation greater than 450 MW occurred on June 08, 2019 Operational Information Active
Jun 08 2019 08:48:46 CST The Daily RSASM for Saturday, June 8, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 08 2019 05:18:13 CST ERCOT has cancelled the following notice: ERCOT will be working from the Primary control center until further notice, use the OPX numbers for Taylor. Operational Information Cancelled
Jun 08 2019 00:52:00 CST No sudden loss of generation greater than 450 MW occurred on June 07, 2019. Operational Information Active
Jun 07 2019 18:51:41 CST ERCOT has cancelled the following notice: 1500 ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW. Operational Information Cancelled
Jun 07 2019 15:02:17 CST 1500 ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW. Operational Information Active
Jun 07 2019 08:48:26 CST The Daily RSASM for Friday, June 7, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 07 2019 04:20:37 CST ERCOT has cancelled the following notice: ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Cancelled
Jun 07 2019 04:20:18 CST ERCOT has cancelled the following notice: ERCOT is working from the Alternate Control Center. Operational Information Cancelled
Jun 07 2019 04:19:37 CST ERCOT will be working from the Primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
Jun 07 2019 00:18:22 CST No sudden loss of generation greater than 450 MW occurred on June 06, 2019. Operational Information Active
Jun 06 2019 16:54:55 CST ERCOT has cancelled the following notice: 1500 ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW. Advisory Cancelled
Jun 06 2019 16:23:57 CST ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Jun 06 2019 16:18:13 CST ERCOT is working from the Alternate Control Center. Operational Information Active
Jun 06 2019 16:02:46 CST 1500 ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW. Advisory Active
Jun 06 2019 08:49:52 CST The Daily RSASM for Thursday, June 6, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 06 2019 02:14:42 CST No sudden loss of generation greater than 450 MW occurred on June 05, 2019. Operational Information Active
Jun 05 2019 08:47:32 CST The Daily RSASM for Wednesday, June 5, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 05 2019 00:08:10 CST No sudden loss of generation greater than 450 MW occurred on June 04, 2019. Operational Information Active
Jun 04 2019 12:02:54 CST ERCOT has cancelled the following notice: ERCOT will execute a SASM at 11:15 for operating day 06/04/19 for HE16-18 for 2 MW REGUP and HE16-24 for 1.3 MW REGDN. Operational Information Cancelled
Jun 04 2019 10:42:30 CST ERCOT will execute a SASM at 11:15 for operating day 06/04/19 for HE16-18 for 2 MW REGUP and HE16-24 for 1.3 MW REGDN. Operational Information Active
Jun 04 2019 08:46:18 CST The Daily RSASM for Tuesday, June 4, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 04 2019 00:55:58 CST No sudden loss of generation greater than 450 MW occurred on June 03, 2019. Operational Information Active
Jun 03 2019 08:46:26 CST The Daily RSASM for Monday, June 3, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 03 2019 01:17:28 CST No sudden loss of generation greater than 450 MW occurred on June 02, 2019. Operational Information Active
Jun 02 2019 08:47:03 CST The Daily RSASM for Sunday, June 2, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 02 2019 00:00:10 CST No sudden loss of generation greater than 450 MW occurred on June 01, 2019. Operational Information Active
Jun 01 2019 08:48:00 CST The Daily RSASM for Saturday, June 1, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jun 01 2019 00:02:20 CST On May 31, 2019 a sudden loss of generation occurred at 11:56 totaling 534 MW. Frequency declined to 59.854 Hz, ERCOT load was 49, 870 MW. Another sudden loss of generation occurred at 20:27 totaling 607 MW. Frequency declined to 59.933 Hz, ERCOT load was 50, 935 MW. Another sudden loss of generation occurred at 21:06 totaling 848 MW. Frequency declined to 59.813 Hz, ERCOT load was 50, 225 MW. Operational Information Active