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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
Jan 31, 2023 8:48:53 AM The Daily RSASM for Tuesday, January 31, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 31, 2023 12:14:26 AM No sudden loss of generation greater than 450 MW occurred on January 30, 2023. Operational Information Active
Jan 30, 2023 1:00:04 PM At 13:00, QSEs representing Firm Fuel Supply Service Resources (FFSSRs) shall begin preparations for potential FFSS deployment. Operational Information Active
Jan 30, 2023 9:30:01 AM Watch issued due to a potential freezing precipitation event for the Panhandle, North, West and Central areas of the ERCOT Region beginning on Monday, January 30, 2023 through Thursday, February 2, 2023. Watch Active
Jan 30, 2023 8:55:54 AM The Daily RSASM for Monday, January 30, 2023 will not be occurring due to zero participating QSEs Operational Information Active
Jan 30, 2023 12:05:09 AM No sudden loss of generation greater than 450 MW occurred on January 29, 2023. Operational Information Active
Jan 29, 2023 12:00:09 PM Advisory issued due to a potential freezing precipitation event for the Panhandle, North, West and Central areas of the ERCOT Region beginning on Monday, January 30, 2023 through Thursday, February 2, 2023. Advisory Active
Jan 29, 2023 8:46:49 AM The Daily RSASM for Sunday, January 29, 2023 will not be occurring due to zero participating QSEs Operational Information Active
Jan 29, 2023 8:23:26 AM ERCOT has cancelled the following notice: ERCOT is taking manual action to pre-posture for 345kV North Edinburg to Lon Hill line planned outage. Operational Information Cancelled
Jan 29, 2023 7:46:45 AM ERCOT is taking manual action to pre-posture for 345kV North Edinburg to Lon Hill line planned outage. Operational Information Active
Jan 29, 2023 12:00:22 AM No sudden loss of generation greater than 450 MW occurred on January 28, 2023. Operational Information Active
Jan 28, 2023 11:22:50 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [22:50] for operating day [01/29/23] for HE [09-24] for [60] MW [RRS]. Operational Information Cancelled
Jan 28, 2023 10:22:53 PM ERCOT will execute a SASM at [22:50] for operating day [01/29/23] for HE [09-24] for [60] MW [RRS]. Operational Information Active
Jan 28, 2023 9:07:01 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 20:35 for operating days 01/28/23 and 01/29/23 for 01/28/23 HE23 to 01/29/23 HE08 for 60 MW RRS. Operational Information Cancelled
Jan 28, 2023 8:08:58 PM ERCOT will execute a SASM at 20:35 for operating days 01/28/23 and 01/29/23 for 01/28/23 HE23 to 01/29/23 HE08 for 60 MW RRS. Operational Information Active
Jan 28, 2023 8:46:22 AM The Daily RSASM for Saturday, January 28, 2023 will not be occurring due to zero participating QSEs Operational Information Active
Jan 28, 2023 12:01:16 AM No sudden loss of generation greater than 450 MW occurred on January 27, 2023. Operational Information Active
Jan 27, 2023 9:30:12 AM OCN issued due to a potential freezing precipitation event for the Panhandle, North and West areas of the ERCOT Region beginning on Tuesday, January 31, 2023 through Thursday, February 2, 2023. OCN Active
Jan 27, 2023 8:45:19 AM The Daily RSASM for Friday, January 27, 2023 will not be occurring due to zero participating QSE Operational Information Active
Jan 27, 2023 12:02:57 AM No sudden loss of generation greater than 450 MW occurred on January 26, 2023. Operational Information Active
Jan 26, 2023 12:27:02 PM ERCOT has cancelled the following notice: ERCOT is issuing an OCN for the Panhandle IROL due to a topology change. OCN Cancelled
Jan 26, 2023 8:47:06 AM The Daily RSASM for Thursday, January 26, 2023 will not be occurring due to zero participating QSE Operational Information Active
Jan 26, 2023 7:38:01 AM ERCOT is issuing an OCN for the Panhandle IROL due to a topology change. OCN Active
Jan 26, 2023 12:01:12 AM No sudden loss of generation greater than 450 MW occurred on January 25, 2023. Operational Information Active
Jan 25, 2023 10:01:19 PM ERCOT has cancelled the following notice: OCN issued due to a potential freezing precipitation event for the Panhandle, North and West areas of the ERCOT Region beginning on Monday evening, January 23, 2023 through Wednesday, January 25, 2023. OCN Cancelled
Jan 25, 2023 3:37:19 PM ERCOT has cancelled the following notice: The DC_L (Laredo VFT) DC Tie will be unavailable from 01/25/2023 13:36 through 01/25/2023 23:59 due to a forced outage. Operational Information Cancelled
Jan 25, 2023 3:36:53 PM 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
Jan 25, 2023 1:45:04 PM 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
Jan 25, 2023 1:44:32 PM The DC_L (Laredo VFT) DC Tie will be unavailable from 01/25/2023 13:36 through 01/25/2023 23:59 due to a forced outage. Operational Information Active
Jan 25, 2023 8:48:08 AM The Daily RSASM for Wednesday, January 25, 2023 will not be occurring due to zero participating QSE. Operational Information Active
Jan 25, 2023 12:38:35 AM ERCOT has been notified that the RAILROAD DC Tie has been derated to 150MW Import/Export due to oil leak in transformer until further notice. Operational Information Active
Jan 25, 2023 12:01:58 AM On 1/24/2023, a sudden loss of generation occurred at 14:27 totaling 965 MW. Frequency declined to 59.884 Hz, ERCOT load was 48,293 MW. Operational Information Active
Jan 24, 2023 6:21:56 PM ERCOT will execute a SASM at 18:45 for operating day 01/24/23 for 34.7 mw RRS HE 21, 34.2 mw RRS HE 22, 65 mw RRS HE 23, and 64.5 MW RRS HE 24. Operational Information Active
Jan 24, 2023 6:20:13 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 16:45 for operating day 01/24/23 for 70.8 mw RRS HE 19. Operational Information Cancelled
Jan 24, 2023 4:19:13 PM ERCOT will execute a SASM at 16:45 for operating day 01/24/23 for 70.8 mw RRS HE 19. Operational Information Active
Jan 24, 2023 4:04:42 PM ERCOT has cancelled the following notice: ERCOT is taking manual action to reduce flow on faulty T.O. equipment. Operational Information Cancelled
Jan 24, 2023 2:31:40 PM ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 24, 2023 2:27:16 PM ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 24, 2023 8:52:10 AM ERCOT is taking manual action to reduce flow on faulty T.O. equipment. Operational Information Active
Jan 24, 2023 8:48:52 AM The Daily RSASM for Tuesday, January 24, 2023 will not be occurring due to zero participating QSE. Operational Information Active
Jan 24, 2023 12:02:54 AM No sudden loss of generation greater than 450 MW occurred on January 23, 2023. Operational Information Active
Jan 23, 2023 8:48:52 AM The Daily RSASM for Monday, January 23, 2023 will not be occurring due to zero participating QSE. Operational Information Active
Jan 23, 2023 12:01:32 AM No sudden loss of generation greater than 450 MW occurred on January 22, 2023. Operational Information Active
Jan 22, 2023 12:16:13 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 1150 for operating day 1/22/23 for HE1700 in the amount of 23.4MW’s of Reg UP, and HE1800 in the amount of 40MW’s of Non-Spin. Operational Information Cancelled
Jan 22, 2023 11:03:56 AM ERCOT will execute a SASM at 1150 for operating day 1/22/23 for HE1700 in the amount of 23.4MW’s of Reg UP, and HE1800 in the amount of 40MW’s of Non-Spin. Operational Information Active
Jan 22, 2023 8:48:55 AM The Daily RSASM for Sunday, January 22, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 22, 2023 12:04:44 AM No sudden loss of generation greater than 450 MW occurred on January 21, 2023. Operational Information Active
Jan 21, 2023 8:46:11 AM The Daily RSASM for Saturday, January 21, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 21, 2023 12:28:32 AM No sudden loss of generation greater than 450 MW occurred on January 20, 2023. Operational Information Active
Jan 20, 2023 9:30:02 AM OCN issued due to a potential freezing precipitation event for the Panhandle, North and West areas of the ERCOT Region beginning on Monday evening, January 23, 2023 through Wednesday, January 25, 2023. OCN Active
Jan 20, 2023 8:46:46 AM The Daily RSASM for Friday, January 20, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 20, 2023 12:41:18 AM No sudden loss of generation greater than 450 MW occurred on January 19, 2023. Operational Information Active
Jan 19, 2023 8:46:10 AM The Daily RSASM for Thursday, January 19, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 19, 2023 12:02:31 AM No sudden loss of generation greater than 450 MW occurred on January 18, 2023. Operational Information Active
Jan 18, 2023 8:46:33 AM The Daily RSASM for Wednesday, January 18, 2023 will not be occurring due to zero participating QSE Operational Information Active
Jan 18, 2023 12:20:52 AM No sudden loss of generation greater than 450 MW occurred on January 17, 2023. Operational Information Active
Jan 17, 2023 4:47:34 PM At 16:38, site failover of the Energy & Market Management System is complete. Operational Information Active
Jan 17, 2023 3:45:22 PM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
Jan 17, 2023 3:42:30 PM ERCOT Emergency Base Points are Enabled Operational Information Active
Jan 17, 2023 9:27:12 AM At 3:25 PM on 01/17/2023, 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
Jan 17, 2023 8:46:11 AM The Daily RSASM for Tuesday, January 17, 2023 will not be occurring due to zero participating QSE Operational Information Active
Jan 17, 2023 7:26:07 AM At 07:25, All Non-Spin has been recalled. Operational Information Active
Jan 17, 2023 5:48:04 AM At 05:45 approximately 465 MW of Non-Spin has been deployed, anticipated duration is 09:00. Operational Information Active
Jan 17, 2023 12:08:30 AM No sudden loss of generation greater than 450 MW occurred on January 16, 2023. Operational Information Active
Jan 16, 2023 8:45:48 AM The Daily RSASM for Monday, January 16, 2023 will not be occurring due to zero participating QSE Operational Information Active
Jan 16, 2023 12:01:12 AM No sudden loss of generation greater than 450 MW occurred on January 15, 2023. Operational Information Active
Jan 15, 2023 8:47:15 AM The Daily RSASM for Sunday, January 15, 2023 will not be occurring due to zero participating QSE. Operational Information Active
Jan 15, 2023 12:00:50 AM No sudden loss of generation greater than 450 MW occurred on January 14, 2023. Operational Information Active
Jan 14, 2023 8:47:49 AM The Daily RSASM for Saturday, January 14, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 14, 2023 5:30:00 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 0205 for operating day 1/14/23 for REG UP HE0400-HE2400 in the amount of 22MWs, REG DN HE0400-1600 and HE1900-2400 in the amount of 12.4MWs, and REG DN HE17&18 in the amount of 13.5MW’s Operational Information Cancelled
Jan 14, 2023 1:05:04 AM ERCOT will execute a SASM at 0205 for operating day 1/14/23 for REG UP HE0400-HE2400 in the amount of 22MWs, REG DN HE0400-1600 and HE1900-2400 in the amount of 12.4MWs, and REG DN HE17&18 in the amount of 13.5MW’s Operational Information Active
Jan 14, 2023 12:00:31 AM No sudden loss of generation greater than 450 MW occurred on January 13, 2023. Operational Information Active
Jan 13, 2023 8:48:12 AM The Daily RSASM for Friday, January 13, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 13, 2023 3:51:52 AM ERCOT will be working from the Primary Control Center until further notice, use the OPX numbers for Taylor. Operational Information Active
Jan 13, 2023 12:04:58 AM No sudden loss of generation greater than 450 MW occurred on January 12, 2023. Operational Information Active
Jan 12, 2023 4:02:30 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Jan 12, 2023 8:50:40 AM The Daily RSASM for Thursday, January 12, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 12, 2023 12:01:59 AM No sudden loss of generation greater than 450 MW occurred on January 11, 2023. Operational Information Active
Jan 11, 2023 8:53:08 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the Las Pulgas-Rio Hondo 138 kV line outage. Operational Information Cancelled
Jan 11, 2023 8:47:01 AM The Daily RSASM for Wednesday, January 11, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 11, 2023 7:55:01 AM ERCOT is taking manual actions to pre-posture for the Las Pulgas-Rio Hondo 138 kV line outage. Operational Information Active
Jan 11, 2023 12:04:33 AM No sudden loss of generation greater than 450 MW occurred on January 10, 2023. Operational Information Active
Jan 10, 2023 8:45:47 AM The Daily RSASM for Tuesday, January 10, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 10, 2023 12:04:35 AM No sudden loss of generation greater than 450 MW occurred on January 9, 2023. Operational Information Active
Jan 9, 2023 9:52:12 PM ERCOT has cancelled the following notice: ERCOT has been notified that the RAILROAD DC Tie has been derated to 40 MW Import/Export due to transmission outage until further notice Operational Information Cancelled
Jan 9, 2023 6:06:16 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
Jan 9, 2023 5:56:15 PM ERCOT has cancelled the following notice: At 17:26 approximately 469 MW of Non-Spin has been deployed, anticipated duration is 23:59 Operational Information Cancelled
Jan 9, 2023 5:46:24 PM ERCOT has been notified that the RAILROAD DC Tie has been derated to 40 MW Import/Export due to transmission outage until further notice Operational Information Active
Jan 9, 2023 5:41:11 PM ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie will be unavailable from 01/09/2023 17:20 through 01/09/2023 23:59 due to a forced outage. Operational Information Cancelled
Jan 9, 2023 5:29:07 PM The DC_R (Railroad) DC Tie will be unavailable from 01/09/2023 17:20 through 01/09/2023 23:59 due to a forced outage. Operational Information Active
Jan 9, 2023 5:28:58 PM At 17:26 approximately 469 MW of Non-Spin has been deployed, anticipated duration is 23:59 Operational Information Active
Jan 9, 2023 5:26:29 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
Jan 9, 2023 10:42:24 AM ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for the outage on the 138 kV line Fort Mason-Yellow Jacket. Operational Information Cancelled
Jan 9, 2023 9:32:39 AM ERCOT is taking manual actions to pre-posture for the outage on the 138 kV line Fort Mason-Yellow Jacket. Operational Information Active
Jan 9, 2023 8:47:00 AM The Daily RSASM for Monday, January 9, 2023 will not be occurring due to Zero participating QSE's. Operational Information Active
Jan 9, 2023 12:12:06 AM No sudden loss of generation greater than 450 MW occurred on January 8, 2023. Operational Information Active
Jan 8, 2023 8:46:43 AM The Daily RSASM for Sunday, January 8, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 8, 2023 12:05:13 AM No sudden loss of generation greater than 450 MW occurred on January 7, 2023. Operational Information Active
Jan 7, 2023 8:46:55 AM The Daily RSASM for Saturday, January 7, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 7, 2023 12:22:29 AM No sudden loss of generation greater than 450 MW occurred on January 6, 2023. Operational Information Active
Jan 6, 2023 6:15:36 PM At 18:15, All Non-Spin has been recalled. Operational Information Active
Jan 6, 2023 5:47:01 PM At 17:45 approximately 743 MW of Non-Spin has been recalled and 464 MW of Non-Spin remains deployed, anticipated duration is 23:59. Operational Information Active
Jan 6, 2023 4:53:36 PM At 16:52 approximately 1215 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
Jan 6, 2023 8:47:28 AM The Daily RSASM for Friday, January 6, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 6, 2023 12:09:38 AM No sudden loss of generation greater than 450 MW occurred on January 5, 2023. Operational Information Active
Jan 5, 2023 8:47:58 AM The Daily RSASM for Thursday, January 5, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 5, 2023 12:11:09 AM No sudden loss of generation greater than 450 MW occurred on January 4, 2023. Operational Information Active
Jan 4, 2023 8:48:42 AM The Daily RSASM for Wednesday, January 4, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 4, 2023 12:04:59 AM No sudden loss of generation greater than 450 MW occurred on January 3, 2023. Operational Information Active
Jan 3, 2023 6:35:53 PM At 18:30, All Non-Spin has been recalled. Operational Information Active
Jan 3, 2023 5:24:28 PM At 17:21 approximately 1094 MW of Non-Spin has been deployed, anticipated duration is 6 hours. Operational Information Active
Jan 3, 2023 10:15:19 AM ERCOT has cancelled the following notice: ERCOT is taking manual action to pre-posture for 138kV Spur-Salt Creek outage. Operational Information Cancelled
Jan 3, 2023 8:47:45 AM The Daily RSASM for Tuesday, January 3, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 3, 2023 8:23:49 AM ERCOT is taking manual action to pre-posture for 138kV Spur-Salt Creek outage. Operational Information Active
Jan 3, 2023 12:03:20 AM No sudden loss of generation greater than 450 MW occurred on January 2, 2023. Operational Information Active
Jan 2, 2023 8:47:44 AM The Daily RSASM for Monday, January 2, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 2, 2023 6:08:56 AM ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from 01/02/2023 04:40 through 01/02/2023 23:59 due to a forced outage. Operational Information Cancelled
Jan 2, 2023 4:46:25 AM The DC_E (East) DC Tie will be unavailable from 01/02/2023 04:40 through 01/02/2023 23:59 due to a forced outage. Operational Information Active
Jan 2, 2023 12:50:27 AM No sudden loss of generation greater than 450 MW occurred on January 1, 2022. Operational Information Active
Jan 1, 2023 8:48:47 AM The Daily RSASM for Sunday, January 1, 2023 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 1, 2023 1:15:32 AM No sudden loss of generation greater than 450 MW occurred on December 31, 2022. Operational Information Active