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Operations Messages

This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. 

Oct 2022 Nov 2022 Dec 2022 Jan 2023 Feb 2023 Mar 2023
Date & Time Notice Type Status
Dec 31, 2022 8:48:09 AM The Daily RSASM for Saturday, December 31, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 31, 2022 12:32:49 AM No sudden loss of generation greater than 450 MW occurred on December 30, 2022. Operational Information Active
Dec 30, 2022 8:48:49 AM The Daily RSASM for Friday, December 30, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 30, 2022 12:14:43 AM No sudden loss of generation greater than 450 MW occurred on December 29, 2022. Operational Information Active
Dec 29, 2022 8:48:23 AM The Daily RSASM for Thursday, December 29, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 29, 2022 12:07:42 AM No sudden loss of generation greater than 450 MW occurred on December 28, 2022. Operational Information Active
Dec 28, 2022 8:46:59 AM The Daily RSASM for Wednesday, December 28, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 28, 2022 12:00:04 AM No sudden loss of generation greater than 450 MW occurred on December 27, 2022. Operational Information Active
Dec 27, 2022 9:02:45 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for Spur to Salt Creek SS 138kV Line outage. Operational Information Cancelled
Dec 27, 2022 8:47:48 AM The Daily RSASM for Tuesday, December 27, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 27, 2022 8:20:04 AM ERCOT is taking manual actions to pre-posture for Spur to Salt Creek SS 138kV Line outage. Operational Information Active
Dec 27, 2022 12:45:20 AM No sudden loss of generation greater than 450 MW occurred on December 26, 2022. Operational Information Active
Dec 26, 2022 8:47:23 AM The Daily RSASM for Monday, December 26, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 26, 2022 12:00:05 AM No sudden loss of generation greater than 450 MW occurred on December 25, 2022. Operational Information Active
Dec 25, 2022 11:54:17 AM ERCOT has cancelled the following notice: At 12:00, QSEs representing Firm Fuel Supply Service Resources (FFSSRs) shall begin preparations for potential FFSS deployment. Watch Cancelled
Dec 25, 2022 11:52:49 AM ERCOT has cancelled the following notice: At 10:00, Watch issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Watch Cancelled
Dec 25, 2022 11:52:34 AM ERCOT has cancelled the following notice: Advisory issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Advisory Cancelled
Dec 25, 2022 11:52:11 AM ERCOT has cancelled the following notice: OCN issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Operational Information Cancelled
Dec 25, 2022 9:32:39 AM The Laredo DC Tie is now available. Advisory Active
Dec 25, 2022 9:31:15 AM ERCOT has cancelled the following notice: The DC_L (Laredo VFT) 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
Dec 25, 2022 9:30:56 AM ERCOT has cancelled the following notice: The DC_L (Laredo VFT) DC Tie will be unavailable from 12/25/2022 06:28 through 12/25/2022 23:59 due to a forced outage. Operational Information Cancelled
Dec 25, 2022 8:46:56 AM The Daily RSASM for Sunday, December 25, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 25, 2022 7:27:38 AM The DC_L (Laredo VFT) DC Tie will be unavailable from 12/25/2022 06:28 through 12/25/2022 23:59 due to a forced outage. Operational Information Active
Dec 25, 2022 6:39:19 AM The DC_L (Laredo VFT) 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
Dec 25, 2022 12:00:07 AM No sudden loss of generation greater than 450 MW occurred on December 24, 2022. Operational Information Active
Dec 24, 2022 8:11:02 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 19:50 for operating day 12/24/22 for 46.2 mw RRS HE 22-24. Operational Information Cancelled
Dec 24, 2022 7:19:26 PM ERCOT will execute a SASM at 19:50 for operating day 12/24/22 for 46.2 mw RRS HE 22-24. Operational Information Active
Dec 24, 2022 3:35:09 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 15:35 for operating day 12/24/22 for HE 18-21 for RRS 46.2 MW . Operational Information Cancelled
Dec 24, 2022 3:09:55 PM ERCOT will execute a SASM at 15:35 for operating day 12/24/22 for HE 18-21 for RRS 46.2 MW . Operational Information Active
Dec 24, 2022 8:46:30 AM The Daily RSASM for Saturday, December 24, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 24, 2022 8:35:13 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 08:35 for operating day 12/24/22 for HE 11-15 for RRS 46.2 MW . Operational Information Cancelled
Dec 24, 2022 8:10:31 AM ERCOT will execute a SASM at 08:35 for operating day 12/24/22 for HE 11-15 for RRS 46.2 MW . Operational Information Active
Dec 24, 2022 1:19:52 AM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 12/23/2022 23:11 through 12/24/2022 23:59 due to a forced outage. Operational Information Cancelled
Dec 24, 2022 12:19:10 AM On 12/23/2022, a sudden loss of generation occurred at 04:15 totaling 461 MW. Frequency declined to 59.948 Hz, ERCOT load was 70,697 MW. Operational Information Active
Dec 23, 2022 11:30:08 PM The DC_E (East) DC Tie will be unavailable from 12/23/2022 23:11 through 12/24/2022 23:59 due to a forced outage. Operational Information Active
Dec 23, 2022 8:29:09 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 19:50 for operating day 12/23/22 for 57.8 MW RRS HE 22 - 24 and operating day 12/24/22 for 46.2 MW RRS HE 01 - 06. Operational Information Cancelled
Dec 23, 2022 8:26:35 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 16:45 for operating day 12/23/22 for 10 mw RRS HE 20-24. Operational Information Cancelled
Dec 23, 2022 7:20:36 PM ERCOT will execute a SASM at 19:50 for operating day 12/23/22 for 57.8 MW RRS HE 22 - 24 and operating day 12/24/22 for 46.2 MW RRS HE 01 - 06. Operational Information Active
Dec 23, 2022 4:20:54 PM ERCOT will execute a SASM at 16:45 for operating day 12/23/22 for 10 mw RRS HE 20-24. Operational Information Active
Dec 23, 2022 11:58:35 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 11:45 for operating day 12/23/22 for HE 13-24 for RRS 45 MW ”. Operational Information Cancelled
Dec 23, 2022 11:19:41 AM ERCOT will execute a SASM at 11:45 for operating day 12/23/22 for HE 13-24 for RRS 45 MW ”. Operational Information Active
Dec 23, 2022 10:03:19 AM At 10:01, All Non-Spin has been recalled. Operational Information Active
Dec 23, 2022 9:06:11 AM The Daily RSASM for Friday, December 23, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 23, 2022 6:58:16 AM At 06:52 approximately 955 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
Dec 23, 2022 12:29:11 AM No sudden loss of generation greater than 450 MW occurred on December 22, 2022. Operational Information Active
Dec 22, 2022 8:47:29 AM The Daily RSASM for Thursday, December 22, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 22, 2022 12:18:42 AM No sudden loss of generation greater than 450 MW occurred on December 21, 2022. Operational Information Active
Dec 21, 2022 9:42:30 PM Cancelled RUC commitment at [12/22/22 09:00 to 24:00] for [STEAM_2 and 3] due to unintended commitment. Operational Information Active
Dec 21, 2022 12:00:06 PM At 12:00, QSEs representing Firm Fuel Supply Service Resources (FFSSRs) shall begin preparations for potential FFSS deployment. Watch Active
Dec 21, 2022 10:00:05 AM At 10:00, Watch issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Watch Active
Dec 21, 2022 9:16:34 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
Dec 21, 2022 8:49:15 AM The Daily RSASM for Wednesday, December 21, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 21, 2022 12:27:05 AM No sudden loss of generation greater than 450 MW occurred on December 20, 2022. Operational Information Active
Dec 20, 2022 4:09:47 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Dec 20, 2022 8:49:22 AM The Daily RSASM for Tuesday, December 20, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 20, 2022 12:30:40 AM No sudden loss of generation greater than 450 MW occurred on December 19, 2022. Operational Information Active
Dec 19, 2022 1:26:24 PM Advisory issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Advisory Active
Dec 19, 2022 8:49:03 AM The Daily RSASM for Monday, December 19, 2022 will not be occurring due to zero participating QSEs Operational Information Active
Dec 19, 2022 12:01:23 AM No sudden loss of generation greater than 450 MW occurred on December 18, 2022. Operational Information Active
Dec 18, 2022 8:45:18 AM The Daily RSASM for Sunday, December 18, 2022 will not be occurring due to zero participating QSEs Operational Information Active
Dec 18, 2022 12:44:58 AM On 12/17/2022, a sudden loss of generation occurred at 18:53 totaling 712 MW. Frequency declined to 59.894 Hz, ERCOT load was 46,218 MW. Operational Information Active
Dec 17, 2022 6:59:00 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Dec 17, 2022 6:54:00 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Dec 17, 2022 8:45:17 AM The Daily RSASM for Saturday, December 17, 2022 will not be occurring due to zero participating QSEs Operational Information Active
Dec 17, 2022 12:06:10 AM No sudden loss of generation greater than 450 MW occurred on December 16, 2022. Operational Information Active
Dec 16, 2022 7:18:07 PM ERCOT has cancelled the following notice: At 17:26 approximately 802 MW of Non-Spin has been deployed, anticipated duration is 23:59 Operational Information Cancelled
Dec 16, 2022 5:32:02 PM At 17:26 approximately 802 MW of Non-Spin has been deployed, anticipated duration is 23:59 Operational Information Active
Dec 16, 2022 10:50:07 AM Cancelled RUC commitment at timestamp 12/16/22 1042 for SCSES_UNIT2 for 12/16/22 HE 1800 due to unintended commitment. Operational Information Active
Dec 16, 2022 10:47:33 AM Cancelled RUC commitment at timestamp 12/16/22 1037 for SCSES_UNIT1A for 12/16/22 HE 1800 due to unintended commitment. Operational Information Active
Dec 16, 2022 8:59:19 AM OCN issued for the predicted extreme cold weather event for the ERCOT Region Thursday morning, December 22, 2022 through Monday, December 26, 2022. Operational Information Active
Dec 16, 2022 8:45:19 AM The Daily RSASM for Friday, December 16, 2022 will not be occurring due to zero participating QSEs Operational Information Active
Dec 16, 2022 12:00:33 AM No sudden loss of generation greater than 450 MW occurred on December 15, 2022 Operational Information Active
Dec 15, 2022 6:26:22 PM ERCOT has cancelled the following notice: ERCOT is issuing an OCN for the WESTEX IROL due to taking manual action for a topology change. OCN Cancelled
Dec 15, 2022 8:46:14 AM The Daily RSASM for Thursday, December 15, 2022 will not be occurring due to zero participating QSEs Operational Information Active
Dec 15, 2022 12:03:23 AM No sudden loss of generation greater than 450 MW occurred on December 14, 2022 Operational Information Active
Dec 14, 2022 7:04:18 PM At 19:01, All Non-Spin has been recalled. Operational Information Active
Dec 14, 2022 6:43:43 PM At 17:30 approximately 484.8 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
Dec 14, 2022 8:48:54 AM The Daily RSASM for Wednesday, December 14, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 14, 2022 7:44:18 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for Rocky Road to East Stiles 138kV Line outage. Operational Information Cancelled
Dec 14, 2022 7:44:00 AM ERCOT is issuing an OCN for the WESTEX IROL due to taking manual action for a topology change. OCN Active
Dec 14, 2022 7:23:05 AM ERCOT is taking manual actions to pre-posture for Rocky Road to East Stiles 138kV Line outage. Operational Information Active
Dec 14, 2022 12:06:50 AM No sudden loss of generation greater than 450 MW occurred on December 13, 2022 Operational Information Active
Dec 13, 2022 7:53:01 PM At 19:30, All Non-Spin has been recalled. Operational Information Active
Dec 13, 2022 7:01:29 PM At 19:00, All Non-Spin has been recalled. Operational Information Active
Dec 13, 2022 6:52:43 PM At 18:22, 1244 Non-Spin has been recalled. Operational Information Active
Dec 13, 2022 6:50:30 PM At 17:40 approximately 2965 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
Dec 13, 2022 9:09:40 AM ERCOT has cancelled the following notice: At 0741, the ESKOTA RAS has been removed from service and removed from RTCA Operational Information Cancelled
Dec 13, 2022 8:48:28 AM The Daily RSASM for Tuesday, December 13, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 13, 2022 12:30:29 AM No sudden loss of generation greater than 450 MW occurred on December 12, 2022 Operational Information Active
Dec 12, 2022 1:20:18 PM ERCOT has postponed the deadline for the posting of the DAM solution for Operating Day 12/13/2022 due to a manual action and dam restart. Advisory Active
Dec 12, 2022 9:52:21 AM ERCOT is taking manual action for the BUTMAN-MOORE 138kV due to a planned line outage Operational Information Active
Dec 12, 2022 8:56:31 AM At 0741, the ESKOTA RAS has been removed from service and removed from RTCA Operational Information Active
Dec 12, 2022 8:50:53 AM The Daily RSASM for Monday, December 12, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 12, 2022 12:42:19 AM No sudden loss of generation greater than 450 MW occurred on December 11, 2022 Operational Information Active
Dec 11, 2022 8:46:29 AM The Daily RSASM for Sunday, December 11, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 11, 2022 12:02:54 AM No sudden loss of generation greater than 450 MW occurred on December 10, 2022 Operational Information Active
Dec 10, 2022 8:46:52 AM The Daily RSASM for Saturday, December 10, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 10, 2022 12:02:12 AM No sudden loss of generation greater than 450 MW occurred on December 9, 2022. Operational Information Active
Dec 9, 2022 9:23:09 AM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 12/09/2022 08:30 through 12/09/2022 10:00 due to a forced outage. Operational Information Cancelled
Dec 9, 2022 8:56:12 AM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 12/09/2022 08:00 through 12/09/2022 11:00 due to a planned outage. Operational Information Cancelled
Dec 9, 2022 8:46:35 AM The Daily RSASM for Friday, December 9, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 9, 2022 8:34:27 AM The DC_N (North) DC Tie will be unavailable from 12/09/2022 08:30 through 12/09/2022 10:00 due to a forced outage. Operational Information Active
Dec 9, 2022 12:18:10 AM On December 8, 2022, a sudden loss of generation occurred at 03:39 totaling 552 MW. Frequency declined to 59.904 Hz, ERCOT load was 36,041 MW. Operational Information Active
Dec 8, 2022 5:36:49 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 12/03/2022 00:16 through 12/09/2022 16:00 due to a forced outage. Operational Information Cancelled
Dec 8, 2022 5:12:56 PM At 17:12, the test of the ERCOT Emergency Notification System ended. Emergency Notice Active
Dec 8, 2022 5:08:34 PM At 17:08, this is a test of the ERCOT Emergency Notification System. No action is required. Emergency Notice Active
Dec 8, 2022 8:47:43 AM The Daily RSASM for Thursday, December 8, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 8, 2022 3:43:26 AM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Dec 8, 2022 3:39:50 AM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Dec 8, 2022 12:51:20 AM No sudden loss of generation greater than 450 MW occurred on December 7, 2022. Operational Information Active
Dec 7, 2022 8:36:09 PM The DC_E (East) DC Tie will be unavailable from 12/09/2022 08:00 through 12/09/2022 11:00 due to a planned outage. Operational Information Active
Dec 7, 2022 8:46:20 AM The Daily RSASM for Wednesday December 7, 2022 will not be occurring due to zero participating QSE’s Operational Information Active
Dec 7, 2022 12:00:27 AM No sudden loss of generation greater than 450 MW occurred on December 6, 2022. Operational Information Active
Dec 6, 2022 10:04:32 PM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 12/06/2022 20:00 through 12/06/2022 23:59 due to a forced outage. Operational Information Cancelled
Dec 6, 2022 8:05:04 PM The DC_E (East) DC Tie will be unavailable from 12/06/2022 20:00 through 12/06/2022 23:59 due to a forced outage. Operational Information Active
Dec 6, 2022 8:46:11 AM The Daily RSASM for Tuesday December 6, 2022 will not be occurring due to zero participating QSE’s Operational Information Active
Dec 6, 2022 12:38:56 AM No sudden loss of generation greater than 450 MW occurred on December 5, 2022. Operational Information Active
Dec 5, 2022 8:46:56 AM The Daily RSASM for Monday December 5, 2022 will not be occurring due to zero participating QSE’s Operational Information Active
Dec 5, 2022 8:43:44 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the planned outage 138kV Fort Mason to Yellow Jacket. Operational Information Cancelled
Dec 5, 2022 8:28:04 AM ERCOT is taking manual actions to pre-posture for the planned outage 138kV Fort Mason to Yellow Jacket. Operational Information Active
Dec 5, 2022 12:03:38 AM No sudden loss of generation greater than 450 MW occurred on December 4, 2022. Operational Information Active
Dec 4, 2022 8:48:19 AM The Daily RSASM for Sunday, December 4, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 4, 2022 12:02:47 AM No sudden loss of generation greater than 450 MW occurred on December 3, 2022. Operational Information Active
Dec 3, 2022 8:48:34 AM The Daily RSASM for Saturday, December 3, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 3, 2022 12:18:47 AM The DC_N (North) DC Tie will be unavailable from 12/03/2022 00:16 through 12/09/2022 16:00 due to a forced outage. Operational Information Active
Dec 3, 2022 12:00:24 AM No sudden loss of generation greater than 450 MW occurred on December 2, 2022. Operational Information Active
Dec 2, 2022 12:37:18 PM ERCOT has cancelled the following notice: ERCOT is taking manual action to pre-posture for the planned outage on Mountain Top to Miller 138kv line. Operational Information Cancelled
Dec 2, 2022 11:32:19 AM ERCOT is taking manual action to pre-posture for the planned outage on Mountain Top to Miller 138kv line. Operational Information Active
Dec 2, 2022 10:31:45 AM ERCOT has cancelled the following notice: ERCOT is taking manual action, using the PNHNDL GTC to pre-posture for the planned outage on Wett Cottonwood to Dermott Switch double circuit 345 kv line. Operational Information Cancelled
Dec 2, 2022 8:58:58 AM ERCOT is taking manual action, using the PNHNDL GTC to pre-posture for the planned outage on Wett Cottonwood to Dermott Switch double circuit 345 kv line. Operational Information Active
Dec 2, 2022 8:52:30 AM The Daily RSASM for Friday, December 2, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 2, 2022 7:47:38 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions using the WESTEX GTC to pre posture for a planned double circuit KLNSW to BWNSW and BUCSW transmission outage. Operational Information Cancelled
Dec 2, 2022 6:16:06 AM ERCOT is taking manual actions using the WESTEX GTC to pre posture for a planned double circuit KLNSW to BWNSW and BUCSW transmission outage. Operational Information Active
Dec 2, 2022 12:01:34 AM No sudden loss of generation greater than 450 MW occurred on December 1, 2022. Operational Information Active
Dec 1, 2022 1:08:21 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 11/16/2022 20:21 through 12/01/2022 16:00 due to a forced outage. Operational Information Cancelled
Dec 1, 2022 8:47:49 AM The Daily RSASM for Thursday, December 1, 2022 will not be occurring due to zero participating QSEs. Operational Information Active
Dec 1, 2022 12:49:49 AM No sudden loss of generation greater than 450 MW occurred on November 30, 2022. Operational Information Active