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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
May 31, 2022 8:46:53 AM The Daily RSASM for Tuesday, May 31, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 31, 2022 2:31:49 AM No sudden loss of generation greater than 450 MW occurred on May 30, 2022. Operational Information Active
May 31, 2022 12:24:51 AM ERCOT has cancelled the following notice: At 09:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Saturday, May 28, 2022 until Monday, May 30, 2022. OCN Cancelled
May 30, 2022 12:46:10 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 05/30/2022 01:02 through 05/30/2022 23:59 due to a forced outage. Operational Information Cancelled
May 30, 2022 8:46:47 AM The Daily RSASM for Monday, May 30, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 30, 2022 1:10:18 AM The DC_N (North) DC Tie will be unavailable from 05/30/2022 01:02 through 05/30/2022 23:59 due to a forced outage. Operational Information Active
May 30, 2022 12:03:02 AM No sudden loss of generation greater than 450 MW occurred on May 29, 2022. Operational Information Active
May 29, 2022 8:46:34 AM The Daily RSASM for Sunday, May 29, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 29, 2022 12:05:47 AM No sudden loss of generation greater than 450 MW occurred on May 28, 2022. Operational Information Active
May 28, 2022 12:04:14 PM Cancelled RUC commitment at 1155 on 5/28/22 for KMCHI_CC1_6 for HE 16 through HE 23 due to unintended commitment. Cancelled RUC commitment at 1156 on 5/28/22 for KMCHI_CC2_6 for HE 16 through HE 23 due to unintended commitment. Operational Information Active
May 28, 2022 8:46:05 AM The Daily RSASM for Saturday, May 28, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 28, 2022 12:00:07 AM No sudden loss of generation greater than 450 MW occurred on May 27, 2022. Operational Information Active
May 27, 2022 7:31:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-27 19:31:01, END_TIME: 2022-05-27 19:31:01, DURATION: 0 Hrs 0 Mins. ; Market Message
May 27, 2022 7:30:39 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-27 19:30:39, END_TIME: 2022-05-27 19:30:39, DURATION: 0 Hrs 0 Mins.; Market Message
May 27, 2022 2:09:15 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 341.8, BEGIN_TIME: 2022-05-27 14:09:14, END_TIME: 2022-05-27 23:59:00, DURATION: 9 Hrs 49 Mins.; Market Message
May 27, 2022 8:46:26 AM The Daily RSASM for Friday, May 27, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 27, 2022 1:20:36 AM No sudden loss of generation greater than 450 MW occurred on May 26, 2022. Operational Information Active
May 26, 2022 9:48:48 PM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
May 26, 2022 9:47:28 PM ERCOT Emergency Base Points are Enabled Operational Information Active
May 26, 2022 8:29:57 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 05/25/2022 14:02 through 05/25/2022 23:59 due to a forced outage. Operational Information Cancelled
May 26, 2022 8:08:09 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-26 20:08:09, END_TIME: 2022-05-26 20:08:09, DURATION: 0 Hrs 0 Mins.; Market Message
May 26, 2022 4:32:49 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 839.8, BEGIN_TIME: 2022-05-26 16:32:48, END_TIME: 2022-05-26 23:59:00, DURATION: 7 Hrs 26 Mins.; Market Message
May 26, 2022 9:03:16 AM At 09:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Saturday, May 28, 2022 until Monday, May 30, 2022. OCN Active
May 26, 2022 8:46:29 AM The Daily RSASM for Thursday, May 26, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 26, 2022 1:09:21 AM No sudden loss of generation greater than 450 MW occurred on May 25, 2022. Operational Information Active
May 25, 2022 3:42:20 PM Cancelled RUC commitment at 1523 on 5/25/22 for SCSES 2 for HE 2100 through HE 2200 due to unintended commitment. Cancelled RUC commitment at 1525 on 5/25/22 for TRSES 6 for HE 2200 due to unintended commitment. Cancelled RUC commitment at 1526 on 5/25/22 for LHSES 2 for HE 2100 due to unintended commitment. Operational Information Active
May 25, 2022 2:13:54 PM The DC_N (North) DC Tie will be unavailable from 05/25/2022 14:02 through 05/25/2022 23:59 due to a forced outage. Operational Information Active
May 25, 2022 8:52:02 AM The Daily RSASM for Wednesday, May 25, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 25, 2022 1:46:06 AM No sudden loss of generation greater than 450 MW occurred on May 24, 2022. Operational Information Active
May 24, 2022 9:51:00 AM ERCOT has cancelled the following notice: The Eskota RAS has been taken out of service. Operational Information Cancelled
May 24, 2022 9:09:11 AM The Eskota RAS has been taken out of service. Operational Information Active
May 24, 2022 8:50:22 AM The Daily RSASM for Tuesday, May 24, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 24, 2022 7:07:54 AM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
May 24, 2022 7:05:06 AM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
May 24, 2022 5:03:37 AM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 05/24/2022 07:00 through 05/24/2022 09:00 due to a planned outage. Operational Information Cancelled
May 24, 2022 12:56:35 AM No sudden loss of generation greater than 450 MW occurred on May 23, 2022. Operational Information Active
May 23, 2022 8:48:49 AM The Daily RSASM for Monday, May 23, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 23, 2022 12:02:11 AM No sudden loss of generation greater than 450 MW occurred on May 22, 2022. Operational Information Active
May 22, 2022 8:46:04 AM The Daily RSASM for Sunday, May 22, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 22, 2022 12:09:28 AM No sudden loss of generation greater than 450 MW occurred on May 21, 2022. Operational Information Active
May 21, 2022 10:06:58 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 9:40 for operating day 5/21/22 for 7.0 mw RRS HE12-24. Operational Information Cancelled
May 21, 2022 9:05:53 AM ERCOT will execute a SASM at 9:40 for operating day 5/21/22 for 7.0 mw RRS HE12-24. Operational Information Active
May 21, 2022 8:46:57 AM The Daily RSASM for Saturday, May 21, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 21, 2022 3:54:31 AM ERCOT has cancelled the following notice: At 09:30, ERCOT is extending an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Friday, May 13, 2022 until Friday, May 20, 2022. OCN Cancelled
May 21, 2022 12:32:58 AM No sudden loss of generation greater than 450 MW occurred on May 20, 2022. Operational Information Active
May 20, 2022 5:34:06 PM The DC_E (East) DC Tie will be unavailable from 05/24/2022 07:00 through 05/24/2022 09:00 due to a planned outage. Operational Information Active
May 20, 2022 8:46:22 AM The Daily RSASM for Friday, May 20, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 20, 2022 4:33:33 AM No sudden loss of generation greater than 450 MW occurred on May 19, 2022. Operational Information Active
May 19, 2022 9:00:10 AM The Daily RSASM for Thursday, May 19, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 18, 2022 8:24:55 PM 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. https://mis.ercot.com/secure/data-products/grid/forecasts AS Postings Active
May 18, 2022 8:46:25 AM The Daily RSASM for Wednesday, May 18, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 18, 2022 1:07:01 AM No sudden loss of generation greater than 450 MW occurred on May 17, 2022. Operational Information Active
May 17, 2022 9:11:37 AM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 05/17/2022 06:00 through 05/17/2022 23:59 due to a forced outage. Operational Information Cancelled
May 17, 2022 8:46:39 AM The Daily RSASM for Tuesday, May 17, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 17, 2022 6:19:50 AM The DC_N (North) DC Tie will be unavailable from 05/17/2022 06:00 through 05/17/2022 23:59 due to a forced outage. Operational Information Active
May 17, 2022 1:01:25 AM No sudden loss of generation greater than 450 MW occurred on May 16, 2022. Operational Information Active
May 16, 2022 10:01:34 PM ERCOT has cancelled the following notice: At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,680 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OSA if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OSA. Operational Information Cancelled
May 16, 2022 10:01:27 PM ERCOT has cancelled the following notice: At 10:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,900 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Cancelled
May 16, 2022 10:01:18 PM ERCOT has cancelled the following notice: At 13:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday, May 10, 2022 HE 15 until Wednesday, May 11, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 2,930 MW from an OAE and then make the OSA. On Friday, May 6, 2022 at 13:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Cancelled
May 16, 2022 3:46:17 PM ERCOT has cancelled the following notice: The Bearkat RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
May 16, 2022 9:25:59 AM At 09:30, ERCOT is extending an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Friday, May 13, 2022 until Friday, May 20, 2022. OCN Active
May 16, 2022 8:46:16 AM The Daily RSASM for Monday, May 16, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 16, 2022 12:37:04 AM No sudden loss of generation greater than 450 MW occurred on May 15, 2022. Operational Information Active
May 15, 2022 8:46:00 AM The Daily RSASM for Sunday, May 15, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 15, 2022 12:22:04 AM No sudden loss of generation greater than 450 MW occurred on May 14, 2022. Operational Information Active
May 14, 2022 8:47:24 AM The Daily RSASM for Saturday, May 14, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 14, 2022 2:46:36 AM Cancelled RUC commitment at timestamp 05/14/22 0225 for CALAVERS JKS 1 for 05/14/22 HE 1300 - HE 2400 due to unintended commitment. Operational Information Active
May 14, 2022 12:10:41 AM On 05/13/2022, a sudden loss of generation occurred at 12:32:25 totaling 563.49 MW. Frequency declined to 59.900 Hz, ERCOT load was 57,891 MW. Operational Information Active
May 13, 2022 7:59:33 PM At 19:56, All Non-Spin has been recalled. Operational Information Active
May 13, 2022 7:56:42 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-13 19:56:41, END_TIME: 2022-05-13 19:56:41, DURATION: 0 Hrs 0 Mins.; Market Message
May 13, 2022 2:58:43 PM At 1447 approximately 998MW's of Non-Spin has been deployed, the anticipated duration is through 23:59, 5/13/2022. Operational Information Active
May 13, 2022 2:56:00 PM Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of 05/13/2022 is available. Operational Instruction Active
May 13, 2022 2:47:41 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 998.8, BEGIN_TIME: 2022-05-13 14:47:41, END_TIME: 2022-05-13 23:59:59, DURATION: 9 Hrs 12 Mins.; Market Message
May 13, 2022 12:36:47 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
May 13, 2022 12:32:31 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
May 13, 2022 8:46:45 AM The Daily RSASM for Friday, May 13, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 13, 2022 4:58:13 AM ERCOT will be working from the Primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
May 13, 2022 4:57:49 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
May 13, 2022 12:00:37 AM No sudden loss of generation greater than 450 MW occurred on May 12, 2022. Operational Information Active
May 12, 2022 4:55:21 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
May 12, 2022 4:54:51 PM 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
May 12, 2022 10:33:23 AM At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,680 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OSA if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OSA. Operational Information Active
May 12, 2022 10:32:51 AM ERCOT has cancelled the following notice: At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,680 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OSA if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OSA. Operational Information Cancelled
May 12, 2022 10:00:01 AM At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,680 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OSA if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OSA. Operational Information Active
May 12, 2022 9:12:23 AM The Daily RSASM for Thursday, May 12, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 12, 2022 9:12:02 AM ERCOT has cancelled the following notice: The Daily RSASM for Thursday, May 12, 2022 will not be occurring due to zero participating QSEs. Advisory Cancelled
May 12, 2022 8:46:39 AM The Daily RSASM for Thursday, May 12, 2022 will not be occurring due to zero participating QSEs. Advisory Active
May 12, 2022 12:01:08 AM No sudden loss of generation greater than 450 MW occurred on May 11, 2022. Operational Information Active
May 11, 2022 9:58:33 PM ERCOT has cancelled the following notice: At 13:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday, May 10, 2022 HE 15 until Wednesday, May 11, 2022 HE 22 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. Operational Information Cancelled
May 11, 2022 6:28:15 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-11 18:28:15, END_TIME: 2022-05-11 18:28:15, DURATION: 0 Hrs 0 Mins.; Market Message
May 11, 2022 2:43:03 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 45.4, BEGIN_TIME: 2022-05-11 14:43:03, END_TIME: 2022-05-11 23:59:59, DURATION: 9 Hrs 16 Mins.; Market Message
May 11, 2022 10:00:37 AM At 10:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 13, 2022 HE 15 until Monday, May 16, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 4,900 MW from an OAE and then make the OSA. On Thursday, May 12, 2022 at 10:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Active
May 11, 2022 9:00:07 AM At 09:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Friday, May 13, 2022 until Wednesday, May 18, 2022. OCN Active
May 11, 2022 8:46:30 AM The Daily RSASM for Wednesday, May 11, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 11, 2022 12:28:29 AM No sudden loss of generation greater than 450 MW occurred on May 10, 2022. Operational Information Active
May 11, 2022 12:00:01 AM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-11 00:00:01, END_TIME: 2022-05-11 00:00:01, DURATION: 0 Hrs 0 Mins. ; Market Message
May 10, 2022 4:33:09 PM Market price correction for SCED. ERCOT has identified a need to perform a price correction for Real-Time Market Settlement Interval 16:00 on OD 05/09/2022 due to planned system maintenance. Only Real-Time Prices for Energy Metered for Resources (RTRMPRs) were impacted. There was no impact to Real-Time Settlement Point Prices. Corrections to the RTRMPRs will be finished by 16:00 on 05/11/2022. Since ERCOT does not post price corrections for RTRMPRs, this price correction will only be reflected on the settlement statements of the impacted QSEs. Alert Active
May 10, 2022 2:30:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 248.8, BEGIN_TIME: 2022-05-10 14:30:00, END_TIME: 2022-05-10 23:59:59, DURATION: 9 Hrs 29 Mins.; Market Message
May 10, 2022 9:14:33 AM Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of 05/10/2022 is available. Operational Instruction Active
May 10, 2022 8:46:59 AM The Daily RSASM for Tuesday, May 10, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 10, 2022 12:14:29 AM No sudden loss of generation greater than 450 MW occurred on May 09, 2022. Operational Information Active
May 10, 2022 12:00:02 AM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-10 00:00:01, END_TIME: 2022-05-10 00:00:01, DURATION: 0 Hrs 0 Mins. ; Market Message
May 9, 2022 5:52:07 PM ERCOT has cancelled the following notice: At 3:25 PM on 05/09/2022, ERCOT will perform site failover of its Energy & Market Management Systems. During this time, market communications will be unavailable for about 20 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This event will be preceded by a "hot line" call shortly before beginning. Operational Information Cancelled
May 9, 2022 3:45:37 PM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
May 9, 2022 3:42:33 PM ERCOT Emergency Base Points are Enabled Operational Information Active
May 9, 2022 2:07:58 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 546.8, BEGIN_TIME: 2022-05-09 14:07:57, END_TIME: 2022-05-09 23:59:59, DURATION: 9 Hrs 52 Mins.; Market Message
May 9, 2022 1:11:49 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 131.7, BEGIN_TIME: 2022-05-09 13:11:49, END_TIME: 2022-05-09 23:59:59, DURATION: 10 Hrs 48 Mins.; Market Message
May 9, 2022 9:20:12 AM At 3:25 PM on 05/09/2022, ERCOT will perform site failover of its Energy & Market Management Systems. During this time, market communications will be unavailable for about 20 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This event will be preceded by a "hot line" call shortly before beginning. Operational Information Active
May 9, 2022 8:48:51 AM The Daily RSASM for Monday, May 9, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 9, 2022 7:46:41 AM The Bearkat RAS has been taken out of service/removed from RTCA. Operational Information Active
May 9, 2022 12:09:19 AM On 5/08/2022, a sudden loss of generation occurred at 23:37 totaling 520 MW. Frequency declined to 59.905 Hz, ERCOT load was 52,109 MW. Operational Information Active
May 8, 2022 11:42:12 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
May 8, 2022 11:37:52 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
May 8, 2022 3:45:59 PM DAM is complete, DRUC will begin at 16:45. Advisory Active
May 8, 2022 1:20:14 PM ERCOT has postponed the deadline for the posting of the DAM solution for Operating Day 05/09/2022 due to long running solution. Advisory Active
May 8, 2022 8:46:50 AM The Daily RSASM for Sunday, May 8, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 8, 2022 12:03:21 AM No sudden loss of generation greater than 450 MW occurred on May 07, 2022. Operational Information Active
May 7, 2022 10:00:40 PM ERCOT has cancelled the following notice: At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22 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. Operational Information Cancelled
May 7, 2022 10:00:22 PM ERCOT has cancelled the following notice: At a time of 10:00, ERCOT is UPDATING an AAN due to conditions changing and a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 3,240 MW from an OAE and then make the OSA. On Wednesday, May 4, 2022 at 10:00 ERCOT will execute an OAE. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Cancelled
May 7, 2022 10:00:02 PM ERCOT has cancelled the following notice: At 10:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 5,200 MW from an OAE and then make the OSA. On Wednesday, May 4, 2022 at 10:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Cancelled
May 7, 2022 8:46:38 AM The Daily RSASM for Saturday, May 7, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 7, 2022 12:02:54 AM No sudden loss of generation greater than 450 MW occurred on May 06, 2022. Operational Information Active
May 6, 2022 12:59:09 PM At 13:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday, May 10, 2022 HE 15 until Wednesday, May 11, 2022 HE 22 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. Operational Information Active
May 6, 2022 9:59:52 AM At 10:00, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22 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. Operational Information Active
May 6, 2022 9:28:27 AM At 09:30, ERCOT is extending an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Friday, May 6, 2022 until Thursday, May 12, 2022. OCN Active
May 6, 2022 8:47:48 AM The Daily RSASM for Friday, May 6, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 6, 2022 12:24:07 AM No sudden loss of generation greater than 450 MW occurred on May 05, 2022. Operational Information Active
May 5, 2022 1:27:16 PM Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of 05/05/2022 is available. Operational Instruction Active
May 5, 2022 1:00:04 PM At 13:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday, May 10, 2022 HE 15 until Wednesday, May 11, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 2,930 MW from an OAE and then make the OSA. On Friday, May 6, 2022 at 13:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Active
May 5, 2022 8:48:10 AM The Daily RSASM for Thursday, May 5, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 5, 2022 6:52:10 AM Cancelled RUC commitment at 06:02 May 05, 2022 for HLSES 4 for May 05, HE 1300. due to unintended commitment. Operational Information Active
May 5, 2022 1:09:18 AM ERCOT has cancelled the following notice: “ERCOT will execute a SASM at 00:40 for operating day 05/05/2022 for REG-UP: 30 MW HE03-04 MW and REG-DN: HE3 14.2 MW, HE4 14.6 MW.” Operational Information Cancelled
May 5, 2022 12:05:00 AM “ERCOT will execute a SASM at 00:40 for operating day 05/05/2022 for REG-UP: 30 MW HE03-04 MW and REG-DN: HE3 14.2 MW, HE4 14.6 MW.” Operational Information Active
May 5, 2022 12:03:05 AM No sudden loss of generation greater than 450 MW occurred on May 04, 2022. Operational Information Active
May 4, 2022 10:00:01 AM At a time of 10:00, ERCOT is UPDATING an AAN due to conditions changing and a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 3,240 MW from an OAE and then make the OSA. On Wednesday, May 4, 2022 at 10:00 ERCOT will execute an OAE. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Active
May 4, 2022 8:47:07 AM The Daily RSASM for Wednesday, May 4, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 4, 2022 12:37:55 AM No sudden loss of generation greater than 450 MW occurred on May 03, 2022. Operational Information Active
May 3, 2022 9:59:36 AM At 10:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Friday, May 6, 2022 HE 15 until Saturday, May 7, 2022 HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek 5,200 MW from an OAE and then make the OSA. On Wednesday, May 4, 2022 at 10:00 ERCOT will execute an OAE if deemed necessary. Please notify the ERCOT Client Services if a specific resource cannot be considered in the OAE. Operational Information Active
May 3, 2022 9:32:47 AM At a time of 09:30, ERCOT is issuing an OCN for Extreme Hot Weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Friday, May 6, 2022 until Monday, May 9, 2022. Operational Information Active
May 3, 2022 9:32:08 AM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 04/29/2022 14:00 through 05/03/2022 18:00 due to a planned outage. Operational Information Cancelled
May 3, 2022 8:46:46 AM The Daily RSASM for Tuesday, May 3, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 3, 2022 7:00:01 AM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2022-05-03 07:00:01, END_TIME: 2022-05-03 07:00:01, DURATION: 0 Hrs 0 Mins. ; Market Message
May 3, 2022 1:00:59 AM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 46.6, BEGIN_TIME: 2022-05-03 01:00:58, END_TIME: 2022-05-03 06:59:59, DURATION: 5 Hrs 59 Mins.; Market Message
May 3, 2022 12:35:49 AM No sudden loss of generation greater than 450 MW occurred on May 02, 2022. Operational Information Active
May 2, 2022 8:57:21 AM ERCOT has cancelled the following notice: 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 Cancelled
May 2, 2022 8:45:51 AM The Daily RSASM for Monday, May 2, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 2, 2022 12:10:05 AM No sudden loss of generation greater than 450 MW occurred on May 01, 2022. Operational Information Active
May 1, 2022 8:46:38 AM The Daily RSASM for Sunday, May 1, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
May 1, 2022 12:03:20 AM No sudden loss of generation greater than 450 MW occurred on April 30, 2022. Operational Information Active