MIS LOG IN

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.

Mar 2022 Apr 2022 May 2022 Jun 2022 Jul 2022 Aug 2022
Date & Time Notice Type Status
Mar 31, 2022 8:46:13 AM The Daily RSASM for Thursday, March 31, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 31, 2022 12:31:00 AM No sudden loss of generation greater than 450 MW occurred on March 30, 2022. Operational Information Active
Mar 30, 2022 1:30:08 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 03/30/2022 09:00 through 03/30/2022 14:00 due to a forced outage. Operational Information Cancelled
Mar 30, 2022 10:16:40 AM ERCOT has cancelled the following notice: The DC_N (North) 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
Mar 30, 2022 10:16:24 AM The DC_N (North) DC Tie will be unavailable from 03/30/2022 09:00 through 03/30/2022 14:00 due to a forced outage. Operational Information Active
Mar 30, 2022 9:28:04 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for AEP00351828 outage. Operational Information Cancelled
Mar 30, 2022 9:04:04 AM The DC_N (North) 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
Mar 30, 2022 8:46:48 AM The Daily RSASM for Wednesday, March 30, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 30, 2022 8:31:50 AM ERCOT is taking manual actions to pre-posture for AEP00351828 outage. Operational Information Active
Mar 30, 2022 12:20:38 AM No sudden loss of generation greater than 450 MW occurred on March 29, 2022. Operational Information Active
Mar 30, 2022 12:01:12 AM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 29, 2022 11:58:48 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 29, 2022 9:01:59 AM Cancelled RUC commitment at timestamp 03/29/22 0846 for KMCHI_CC1_4 for 03/29/22 HE 1300 - HE2000 due to unintended commitment. -And- Cancelled RUC commitment at timestamp 03/29/22 0848 for KMCHI_CC2_4 for 03/29/22 HE 1300 - HE2000 due to unintended commitment. Operational Information Active
Mar 29, 2022 8:48:56 AM The Daily RSASM for Tuesday, March 29, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 29, 2022 12:41:57 AM No sudden loss of generation greater than 450 MW occurred on March 28, 2022. Operational Information Active
Mar 28, 2022 9:42:00 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for AEP00351797 outage. Operational Information Cancelled
Mar 28, 2022 8:48:07 AM The Daily RSASM for Monday, March 28, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 28, 2022 8:34:36 AM ERCOT is taking manual actions to pre-posture for AEP00351797 outage. Operational Information Active
Mar 28, 2022 12:02:34 AM No sudden loss of generation greater than 450 MW occurred on March 27, 2022. Operational Information Active
Mar 27, 2022 3:57:04 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 14:40 for operating day 03/27/22 for HE17-20 for 36 MW RRS. Operational Information Cancelled
Mar 27, 2022 2:03:41 PM ERCOT will execute a SASM at 14:40 for operating day 03/27/22 for HE17-20 for 36 MW RRS. Operational Information Active
Mar 27, 2022 8:46:59 AM The Daily RSASM for Sunday, March 27, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 27, 2022 12:00:28 AM No sudden loss of generation greater than 450 MW occurred on March 26, 2022. Operational Information Active
Mar 26, 2022 8:46:52 AM The Daily RSASM for Saturday, March 26, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 26, 2022 12:23:52 AM No sudden loss of generation greater than 450 MW occurred on March 25, 2022. Operational Information Active
Mar 25, 2022 1:54:57 PM ERCOT has cancelled the following notice: The DC_R (Railroad) 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
Mar 25, 2022 1:43:38 PM Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of 03/25/2022 is available. Operational Instruction Active
Mar 25, 2022 12:57:21 PM The DC_R (Railroad) 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
Mar 25, 2022 8:47:42 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for AEP00351714 outage. Operational Information Cancelled
Mar 25, 2022 8:47:26 AM The Daily RSASM for Friday, March 25, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 25, 2022 7:42:59 AM ERCOT is taking manual actions to pre-posture for AEP00351714 outage. Operational Information Active
Mar 25, 2022 12:30:38 AM No sudden loss of generation greater than 450 MW occurred on March 24, 2022. Operational Information Active
Mar 24, 2022 12:42:45 PM ERCOT has cancelled the following notice: The ESKOTA RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
Mar 24, 2022 9:20:11 AM The ESKOTA RAS has been taken out of service/removed from RTCA. Operational Information Active
Mar 24, 2022 8:48:59 AM The Daily RSASM for Thursday, March 24, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 24, 2022 12:04:38 AM No sudden loss of generation greater than 450 MW occurred on March 23, 2022. Operational Information Active
Mar 23, 2022 11:48:51 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the Tesla-Riley 345kV line and Jim Treece-Riley 345 kV line planned outages. Operational Information Cancelled
Mar 23, 2022 10:37:28 AM ERCOT is taking manual actions to pre-posture for the Tesla-Riley 345kV line and Jim Treece-Riley 345 kV line planned outages. Operational Information Active
Mar 23, 2022 10:34:40 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the AEP346895 and AEP346887 outages. Operational Information Cancelled
Mar 23, 2022 10:26:35 AM ERCOT is taking manual actions to pre-posture for the AEP346895 and AEP346887 outages. Operational Information Active
Mar 23, 2022 8:47:30 AM The Daily RSASM for Wednesday, March 24, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 23, 2022 12:59:18 AM No sudden loss of generation greater than 450 MW occurred on March 22, 2022. Operational Information Active
Mar 22, 2022 8:46:43 AM The Daily RSASM for Tuesday, March 22, 2022 did not occur due to zero participating QSEs. Operational Information Active
Mar 22, 2022 4:19:15 AM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 22, 2022 4:16:31 AM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 22, 2022 1:00:29 AM ERCOT has cancelled the following notice: At 13:30, ERCOT is issuing an OCN due to the potential severe weather of high winds, and tornadoes in the Central, North Central and East Texas areas for Monday March 21, 2022. OCN Cancelled
Mar 22, 2022 12:44:10 AM No sudden loss of generation greater than 450 MW occurred on March 21, 2022. Operational Information Active
Mar 21, 2022 4:36:02 PM Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of 03/21/2022 is available. Operational Instruction Active
Mar 21, 2022 1:51:31 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 21, 2022 1:50:27 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 21, 2022 1:31:08 PM At 13:30, ERCOT is issuing an OCN due to the potential severe weather of high winds, and tornadoes in the Central, North Central and East Texas areas for Monday March 21, 2022. OCN Active
Mar 21, 2022 8:45:47 AM The Daily RSASM for Monday, March 21, 2022 did not occur due to zero participating QSEs. Operational Information Active
Mar 21, 2022 12:10:49 AM No sudden loss of generation greater than 450 MW occurred on March 20, 2022. Operational Information Active
Mar 20, 2022 2:32:17 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 03/20/2022 05:56 through 03/20/2022 17:00 due to a forced outage. Operational Information Cancelled
Mar 20, 2022 8:47:00 AM The Daily RSASM for Sunday, March 20, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 20, 2022 6:33:28 AM The DC_N (North) DC Tie will be unavailable from 03/20/2022 05:56 through 03/20/2022 17:00 due to a forced outage. Operational Information Active
Mar 20, 2022 12:04:10 AM No sudden loss of generation greater than 450 MW occurred on March 19, 2022. Operational Information Active
Mar 19, 2022 10:44:03 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 21:45 for operating day 03/19/22 for HE24 for 48 MW NSPIN. Operational Information Cancelled
Mar 19, 2022 9:13:27 PM ERCOT will execute a SASM at 21:45 for operating day 03/19/22 for HE24 for 48 MW NSPIN. Operational Information Active
Mar 19, 2022 7:05:40 PM The North DC Tie has been released from its Outage and is now available for schedules. Operational Information Active
Mar 19, 2022 7:03:34 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 02/14/2022 08:00 through 03/22/2022 16:00 due to a planned outage. Operational Information Cancelled
Mar 19, 2022 8:47:06 AM The Daily RSASM for Saturday, March 19, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 19, 2022 1:32:50 AM No sudden loss of generation greater than 450 MW occurred on March 18, 2022. Operational Information Active
Mar 18, 2022 1:46:11 PM ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie will be unavailable from 03/07/2022 07:00 through 03/25/2022 19:00 due to a planned outage. Operational Information Cancelled
Mar 18, 2022 8:46:31 AM The Daily RSASM for Friday, March 18, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 18, 2022 8:04:58 AM The minimum monthly Ancillary Services quantities have been posted to the ERCOT Website; Data Products; Grid; Forecasts under the Projected Ancillary Service Requirements link located under the Reports & Extracts 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. 04/01/2022 https://mis.ercot.com/secure/data-products/grid/forecasts AS Postings Active
Mar 18, 2022 12:02:32 AM No sudden loss of generation greater than 450 MW occurred on March 17, 2022. Operational Information Active
Mar 17, 2022 4:58:47 PM The DC_L (Laredo VFT) DC Tie will be unavailable from 03/21/2022 08:00 through 04/01/2022 16:00 due to a planned outage. Operational Information Active
Mar 17, 2022 4:19:00 PM The DC_N (North) DC Tie will be unavailable from 02/14/2022 08:00 through 03/22/2022 16:00 due to a planned outage. Operational Information Active
Mar 17, 2022 4:18:18 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 02/14/2022 08:00 through 03/17/2022 16:00 due to a planned outage. Operational Information Cancelled
Mar 17, 2022 8:46:58 AM The Daily RSASM for Thursday, March 17, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 17, 2022 12:05:12 AM No sudden loss of generation greater than 450 MW occurred on March 16, 2022. Operational Information Active
Mar 16, 2022 8:48:38 AM The Daily RSASM for Wednesday, March 16, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 16, 2022 12:09:48 AM No sudden loss of generation greater than 450 MW occurred on March 15, 2022 Operational Information Active
Mar 15, 2022 8:47:20 AM The Daily RSASM for Tuesday, March 15, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 15, 2022 12:22:28 AM No sudden loss of generation greater than 450 MW occurred on March 14, 2022. Operational Information Active
Mar 14, 2022 9:45:16 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 14, 2022 9:41:20 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 14, 2022 8:47:20 AM The Daily RSASM for Monday, March 14, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 14, 2022 12:52:02 AM No sudden loss of generation greater than 450 MW occurred on March 13, 2022. Operational Information Active
Mar 13, 2022 8:46:44 AM The Daily RSASM for Sunday, March 13, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 13, 2022 1:13:22 AM On 03/12/2022, a sudden loss of generation occurred at 10:21 totaling 755 MW. Frequency declined to 59.882 Hz, ERCOT load was 49,718 MW. Operational Information Active
Mar 12, 2022 10:25:20 AM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Mar 12, 2022 10:21:08 AM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Mar 12, 2022 9:04:33 AM ERCOT has cancelled the following notice: At 10:30, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09 based on changed conditions. QSEs have updated their Resource COPs and the Outage Scheduler. At this time, ERCOT does not seek additional capacity and will not be issuing an OSA. ERCOT has posted an updated AAN Planning Assessment for reference. OCN Cancelled
Mar 12, 2022 9:04:18 AM ERCOT has cancelled the following notice: At 10:30, ERCOT is updating an AAN due to conditions changing and a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 1,115 MW from an OAE and then make the OSA. On March 9, 2022 at 10:30 ERCOT will execute an OAE. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. OCN Cancelled
Mar 12, 2022 9:03:55 AM ERCOT has cancelled the following notice: At 10:30, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09. ERCOT may Delay/Withdrawn Approved or Accepted Resource Outages. ERCOT may seek 2,000 MW from an OAE and then make the OSA. On March 9, 2022 at 10:30 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. OCN Cancelled
Mar 12, 2022 8:49:01 AM The Daily RSASM for Saturday, March 12, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 12, 2022 12:24:10 AM No sudden loss of generation greater than 450 MW occurred on March 11, 2022. Operational Information Active
Mar 11, 2022 8:47:11 AM The Daily RSASM for Friday, March 11, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 11, 2022 3:59:41 AM 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
Mar 11, 2022 12:11:27 AM No sudden loss of generation greater than 450 MW occurred on March 10, 2022. Operational Information Active
Mar 10, 2022 4:01:10 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Mar 10, 2022 10:37:03 AM At 10:30, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09 based on changed conditions. QSEs have updated their Resource COPs and the Outage Scheduler. At this time, ERCOT does not seek additional capacity and will not be issuing an OSA. ERCOT has posted an updated AAN Planning Assessment for reference. OCN Active
Mar 10, 2022 9:37:36 AM ERCOT has cancelled the following notice: ERCOT is issuing an OCN for modifying the WESTEX Generic Transmission Constraint due to the current transmission outage topology. OCN Active
Mar 10, 2022 8:47:24 AM The Daily RSASM for Thursday, March 10, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 10, 2022 12:11:43 AM No sudden loss of generation greater than 450 MW occurred on March 9, 2022. Operational Information Active
Mar 9, 2022 11:28:22 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at a time of 22:10 for operating day 03/10/2022 for HE01 short 13.6 MW RRS, 4.3 MW RRS short HE05, and 4.2 MW RRS short HE06. Operational Information Cancelled
Mar 9, 2022 9:28:16 PM ERCOT will execute a SASM at a time of 22:10 for operating day 03/10/2022 for HE01 short 13.6 MW RRS, 4.3 MW RRS short HE05, and 4.2 MW RRS short HE06. Operational Information Active
Mar 9, 2022 10:29:39 AM At 10:30, ERCOT is updating an AAN due to conditions changing and a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 1,115 MW from an OAE and then make the OSA. On March 9, 2022 at 10:30 ERCOT will execute an OAE. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. OCN Active
Mar 9, 2022 8:47:41 AM The Daily RSASM for Wednesday, March 9, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 9, 2022 12:37:30 AM No sudden loss of generation greater than 450 MW occurred on March 8, 2022. Operational Information Active
Mar 8, 2022 10:44:54 AM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
Mar 8, 2022 10:44:50 AM ERCOT Emergency Base Points are Enabled Operational Information Active
Mar 8, 2022 10:44:46 AM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
Mar 8, 2022 10:42:30 AM ERCOT Emergency Base Points are Enabled Operational Information Active
Mar 8, 2022 10:29:14 AM At 10:30, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning March 12, 2022 HE 06 until March 12, 2022 HE 09. ERCOT may Delay/Withdrawn Approved or Accepted Resource Outages. ERCOT may seek 2,000 MW from an OAE and then make the OSA. On March 9, 2022 at 10:30 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. OCN Active
Mar 8, 2022 8:47:17 AM The Daily RSASM for Tuesday, March 8, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 8, 2022 12:15:49 AM No sudden loss of generation greater than 450 MW occurred on March 7, 2022. Operational Information Active
Mar 7, 2022 8:46:52 AM The Daily RSASM for Monday, March 7, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 7, 2022 12:42:02 AM No sudden loss of generation greater than 450 MW occurred on March 6, 2022. Operational Information Active
Mar 6, 2022 8:46:42 AM The Daily RSASM for Sunday, March 6, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 6, 2022 12:10:54 AM No sudden loss of generation greater than 450 MW occurred on March 5, 2022. Operational Information Active
Mar 5, 2022 10:25:04 AM The DC_R (Railroad) DC Tie will be unavailable from 03/07/2022 07:00 through 03/25/2022 19:00 due to a planned outage. Operational Information Active
Mar 5, 2022 8:46:36 AM The Daily RSASM for Saturday, March 5, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 5, 2022 12:24:05 AM No sudden loss of generation greater than 450 MW occurred on March 4, 2022. Operational Information Active
Mar 4, 2022 10:12:47 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 09:32 for operating day 04 March 2022 for HE 12-24 for 2MW of RRS. Operational Information Cancelled
Mar 4, 2022 9:05:12 AM ERCOT will execute a SASM at 09:32 for operating day 04 March 2022 for HE 12-24 for 2MW of RRS. Operational Information Active
Mar 4, 2022 8:47:38 AM The Daily RSASM for Friday, March 4, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 4, 2022 12:40:48 AM No sudden loss of generation greater than 450 MW occurred on March 3, 2022. Operational Information Active
Mar 4, 2022 12:25:50 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [23:45] for operating day [03/04/22] for HE [02-09] for 2 MW [RRS] Operational Information Cancelled
Mar 3, 2022 11:17:25 PM ERCOT will execute a SASM at [23:45] for operating day [03/04/22] for HE [02-09] for 2 MW [RRS] Operational Information Active
Mar 3, 2022 8:57:05 AM ERCOT has cancelled the following notice: ERCOT is taking manual action for a planned outage on the SKYLINE to CALAVERAS 345 kV line Operations Notice Cancelled
Mar 3, 2022 8:47:24 AM The Daily RSASM for Thursday, March 3, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 3, 2022 8:25:33 AM ERCOT is taking manual action for a planned outage on the SKYLINE to CALAVERAS 345 kV line Operations Notice Active
Mar 3, 2022 12:01:09 AM No sudden loss of generation greater than 450 MW occurred on March 2, 2022. Operational Information Active
Mar 2, 2022 8:47:44 AM The Daily RSASM for Wednesday, March 2, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 2, 2022 1:10:25 AM No sudden loss of generation greater than 450 MW occurred on March 1, 2022. Operational Information Active
Mar 1, 2022 10:08:00 AM ERCOT has cancelled the following notice: Dec 8, 2021 2:11:00 PM The EASTEX GTC VSAT calculation has been disabled in Real-time and ERCOT will revert back to the EASTEX GTC static table until further notice. Operational Information Active
Mar 1, 2022 8:49:19 AM The Daily RSASM for Tuesday, March 1, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Mar 1, 2022 12:44:11 AM No sudden loss of generation greater than 450 MW occurred on February 28, 2022. Operational Information Active