Operations Messages

This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. (Subscribe to Operations Messages Feed RSS feed.)

Dec 2019 Jan 2020 Feb 2020 Mar 2020 Apr 2020 May 2020
Date Message Type Status
Jan 31 2020 18:37:48 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be derated to 150 MW Import/Export starting 01/27/20 at 07:00 until 02/03/20 at 17:00. Operational Information Cancelled
Jan 31 2020 08:46:17 CST The Daily RSASM for Friday January 31, 2020 will not be occurring due to zero participating QSEs Operational Information Active
Jan 31 2020 06:30:20 CST The Railroad DC Tie will be derated to 150 MW Import/Export starting 01/27/20 at 07:00 until 02/03/20 at 17:00. Operational Information Active
Jan 31 2020 01:16:20 CST No sudden loss of generation greater than 450 MW occurred on January 30, 2020. Operational Information Active
Jan 30 2020 08:46:12 CST The Daily RSASM for Thursday January 30, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 30 2020 00:01:08 CST No sudden loss of generation greater than 450 MW occurred on January 29, 2020. Operational Information Active
Jan 29 2020 08:49:23 CST The Daily RSASM for Wednesday January 29, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 29 2020 07:38:30 CST ERCOT has cancelled the following notice: The MBDSW, Mitchel Bend Switch, RAS has been taken out of service. Operational Information Cancelled
Jan 29 2020 03:33:35 CST The MBDSW, Mitchel Bend Switch, RAS has been taken out of service. Operational Information Active
Jan 29 2020 01:08:44 CST No sudden loss of generation greater than 450 MW occurred on January 28, 2020. Operational Information Active
Jan 28 2020 09:18:19 CST ERCOT has cancelled the following notice: The Eskota Switch RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
Jan 28 2020 08:57:30 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 08:32 01/28/2020 through 12:00 01/28/2020 due to a forced outage. Operational Information Cancelled
Jan 28 2020 08:48:55 CST The Daily RSASM for Tuesday January 28, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 28 2020 08:47:03 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 08:32 01/28/2020 through 12:00 01/28/2020 due to a forced outage. Operational Information Active
Jan 28 2020 08:19:06 CST The Eskota Switch RAS has been taken out of service/removed from RTCA. Operational Information Active
Jan 28 2020 00:05:15 CST No sudden loss of generation greater than 450 MW occurred on January 27, 2020. Operational Information Active
Jan 27 2020 14:57:37 CST Please disregard CM-COPCK-NOTF COP and DRUC CLOSE notifications sent out at 1430 for OD January 28, 2020. Continue to submit COP updates until DRUC closes at 15:19. Advisory Active
Jan 27 2020 14:40:55 CST DRUC for Operating Day Jan 28, 2020 erroneously closed. ERCOT will re-open DRUC and send a Market Notice once it is opened. Advisory Active
Jan 27 2020 14:21:09 CST DAM is complete, DRUC will begin at 1519. Operational Information Active
Jan 27 2020 13:30:06 CST ERCOT has postponed the deadline for the posting of the DAM Solution for Operating Day Jan 28, 2020 due to long running solution. Advisory Active
Jan 27 2020 08:50:18 CST The Daily RSASM for Monday January 27, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 27 2020 00:42:22 CST No sudden loss of generation greater than 450 MW occurred on January 26, 2020. Operational Information Active
Jan 26 2020 08:48:34 CST The Daily RSASM for Sunday January 26, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 26 2020 00:35:14 CST No sudden loss of generation greater than 450 MW occurred on January 25, 2020. Operational Information Active
Jan 25 2020 08:50:33 CST The Daily RSASM for Saturday January 25, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 25 2020 00:08:40 CST No sudden loss of generation greater than 450 MW occurred on January 24, 2020. Operational Information Active
Jan 24 2020 16:47:47 CST The Railroad DC Tie will be derated to 150 MW Import/Export starting 01/27/20 at 07:00 until 01/31/20 at 17:00. Operational Information Active
Jan 24 2020 08:48:36 CST The Daily RSASM for Friday January 24, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 24 2020 00:10:43 CST No sudden loss of generation greater than 450 MW occurred on January 23, 2020. Operational Information Active
Jan 23 2020 13:43:27 CST ERCOT has cancelled the following notice: ERCOT is bypassing the Gauss Series Capacitor for SSR mitigation. Operational Information Cancelled
Jan 23 2020 08:48:21 CST The Daily RSASM for Thursday January 23, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 23 2020 00:49:58 CST No sudden loss of generation greater than 450 MW occurred on January 22, 2020. Operational Information Active
Jan 22 2020 08:45:32 CST The Daily RSASM for Wednesday January 22, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 22 2020 01:10:18 CST No sudden loss of generation greater than 450 MW occurred on January 21, 2020. Operational Information Active
Jan 21 2020 08:45:16 CST The Daily RSASM for Tuesday January 21, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 21 2020 00:13:26 CST No sudden loss of generation greater than 450 MW occurred on January 20, 2020. Operational Information Active
Jan 20 2020 08:47:21 CST The Daily RSASM for Monday January 20, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 20 2020 00:00:40 CST No sudden loss of generation greater than 450 MW occurred on January 19, 2020. Operational Information Active
Jan 19 2020 08:48:20 CST The Daily RSASM for Sunday January 19, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 19 2020 00:00:25 CST No sudden loss of generation greater than 450 MW occurred on January 18, 2020. Operational Information Active
Jan 18 2020 08:47:31 CST The Daily RSASM for Saturday January 18, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 18 2020 00:01:40 CST On 01/17/2020, a sudden loss of generation occurred at 10:01:05 totaling 663.25 MW. Frequency declined to 59.8827 Hz, ERCOT load was 41, 456 MW. Operational Information Active
Jan 17 2020 15:43:11 CST ERCOT Emergency Base Points are Disabled Operational Information Cancelled
Jan 17 2020 15:42:23 CST ERCOT Emergency Base Points are Enabled Operational Information Active
Jan 17 2020 11:45:07 CST On 01/16/2020, a sudden loss of generation occurred at 18:04:27 totaling 541.17 MW. Frequency declined to 59.864 Hz, ERCOT load was 43, 928 MW. Operational Information Active
Jan 17 2020 11:44:33 CST ERCOT has cancelled the following notice: On 01/16/2020, a sudden loss of generation occurred at 16:04:27 totaling 541.17 MW. Frequency declined to 59.864 Hz, ERCOT load was 43, 928 MW. Operational Information Cancelled
Jan 17 2020 10:04:43 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 17 2020 10:01:15 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 17 2020 09:42:47 CST At 3:25 PM on 01/17/2020, 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 2020 08:47:54 CST The Daily RSASM for Friday January 17, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 17 2020 00:39:48 CST ERCOT is bypassing the Gauss Series Capacitor for SSR mitigation. Operational Information Active
Jan 17 2020 00:15:54 CST On 01/16/2020, a sudden loss of generation occurred at 16:04:27 totaling 541.17 MW. Frequency declined to 59.864 Hz, ERCOT load was 43, 928 MW. Operational Information Active
Jan 16 2020 18:07:55 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 16 2020 18:04:35 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 16 2020 08:47:53 CST The Daily RSASM for Thursday January 16, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 16 2020 00:18:06 CST No sudden loss of generation greater than 450 MW occurred on January 15, 2020. Operational Information Active
Jan 15 2020 17:11:38 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions for unsolved contingency DTRCELK5. Operational Information Cancelled
Jan 15 2020 17:11:32 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions for unsolved contingency DTRCELK5. Operational Information Cancelled
Jan 15 2020 14:40:09 CST ERCOT is taking manual actions for unsolved contingency DTRCELK5. Operational Information Active
Jan 15 2020 08:49:35 CST The Daily RSASM for Wednesday, January 15, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 15 2020 00:47:14 CST No sudden loss of generation greater than 450 MW occurred on January 14, 2020 Operational Information Active
Jan 14 2020 10:45:55 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to ERCOTs State Estimator/RTCA has not solved in the last 30 minutes. • Please monitor your Resources and notify ERCOT prior to any generation starting or shutting down. Suspend any new planned outages, and notify ERCOT if any forced outages occur. Operational Information Cancelled
Jan 14 2020 10:37:24 CST ERCOT is issuing an Advisory due to ERCOTs State Estimator/RTCA has not solved in the last 30 minutes. • Please monitor your Resources and notify ERCOT prior to any generation starting or shutting down. Suspend any new planned outages, and notify ERCOT if any forced outages occur. Operational Information Active
Jan 14 2020 08:47:18 CST The Daily RSASM for Tuesday, January 14, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 14 2020 00:47:20 CST No sudden loss of generation greater than 450 MW occurred on January 13, 2020. Operational Information Active
Jan 13 2020 08:47:21 CST The Daily RSASM for Monday, January 13, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 13 2020 00:04:23 CST No sudden loss of generation greater than 450 MW occurred on January 12, 2020. Operational Information Active
Jan 12 2020 08:46:20 CST The Daily RSASM for Sunday, January 12, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 12 2020 00:08:48 CST No sudden loss of generation greater than 450 MW occurred on January 11, 2020. Operational Information Active
Jan 11 2020 15:19:25 CST ERCOT has cancelled the following notice: At 11:48, ERCOT took manual actions using the EASTEX GTC for the SCSES to TRSES 345kV line outage due to an unsolved contingency. Operational Information Cancelled
Jan 11 2020 11:49:16 CST At 11:48, ERCOT took manual actions using the EASTEX GTC for the SCSES to TRSES 345kV line outage due to an unsolved contingency. Operational Information Active
Jan 11 2020 08:48:50 CST The Daily RSASM for Saturday, January 11, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 11 2020 01:28:39 CST On 01/10/2020, a sudden loss of generation occurred at 20:54 totaling 774MW. Frequency declined to 59.846Hz, Ercot load was 38, 916MW. Operational Information Active
Jan 10 2020 20:58:15 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 10 2020 20:54:15 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 10 2020 12:52:20 CST ERCOT has cancelled the following notice: ERCOT will operating from back up control center until further notice. Operational Information Cancelled
Jan 10 2020 12:43:56 CST ERCOT operating from Primary Control Center Operational Information Active
Jan 10 2020 08:46:07 CST The Daily RSASM for Friday, January 10, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 10 2020 00:12:23 CST No sudden loss of generation greater than 450 MW occurred on January 09, 2020. Operational Information Active
Jan 09 2020 16:22:29 CST ERCOT will operating from back up control center until further notice. Operational Information Active
Jan 09 2020 08:46:08 CST The Daily RSASM for Thursday, January 9, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 09 2020 00:08:07 CST No sudden loss of generation greater than 450 MW occurred on January 08, 2020. Operational Information Active
Jan 08 2020 10:16:20 CST ERCOT has cancelled the following notice: ERCOT is taking manual action for unsolved contingency DTRCELK5. Operational Information Cancelled
Jan 08 2020 09:11:46 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for planned 138 kv line outages at Paint Creek. Operational Information Cancelled
Jan 08 2020 08:47:43 CST The Daily RSASM for Wednesday January 8, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 08 2020 07:33:13 CST ERCOT is taking manual actions to pre-posture for planned 138 kv line outages at Paint Creek. Operational Information Active
Jan 08 2020 07:30:26 CST ERCOT is taking manual action for unsolved contingency DTRCELK5. Operational Information Active
Jan 08 2020 00:00:08 CST No sudden loss of generation greater than 450 MW occurred on January 07, 2020. Operational Information Active
Jan 07 2020 08:47:39 CST The Daily RSASM for Tuesday January 7, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 07 2020 00:00:33 CST No sudden loss of generation greater than 450 MW occurred on January 06, 2020 Operational Information Active
Jan 06 2020 13:51:22 CST ERCOT has cancelled the following notice: The Laredo VFT will be unavailable due to continuous outage on the Laredo VFT (LARDVFT) 17kV Variable Frequency Transformer VFT_1 and the associated breakers and disconnects starting on Monday 01/06/20 at 08:30 until Friday 01/10/20 at 16:00 for plant maintenance. Operational Information Cancelled
Jan 06 2020 08:48:56 CST The Daily RSASM for Monday January 6, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 06 2020 08:47:01 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions for unsolved contingency DTRCELK5. Operational Information Cancelled
Jan 06 2020 07:21:12 CST ERCOT is taking manual actions for unsolved contingency DTRCELK5. Operational Information Active
Jan 06 2020 06:11:21 CST The Laredo VFT will be unavailable due to continuous outage on the Laredo VFT (LARDVFT) 17kV Variable Frequency Transformer VFT_1 and the associated breakers and disconnects starting on Monday 01/06/20 at 08:30 until Friday 01/10/20 at 16:00 for plant maintenance. Operational Information Active
Jan 06 2020 00:17:03 CST No sudden loss of generation greater than 450 MW occurred on January 06, 2020 Operational Information Active
Jan 06 2020 00:16:02 CST No sudden loss of generation greater than 450 MW occurred on January 05, 2020 Operational Information Active
Jan 06 2020 00:15:56 CST No sudden loss of generation greater than 450 MW occurred on January 05, 2020 Operational Information Active
Jan 05 2020 08:51:28 CST The Daily RSASM for Sunday, January 5, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 05 2020 00:13:55 CST No sudden loss of generation greater than 450 MW occurred on January 04, 2020 Operational Information Active
Jan 04 2020 10:57:52 CST ERCOT has cancelled the following notice: At 09:45, ERCOT took manual actions using the EASTEX GTC for the SCSES to TRSES 345kV line outage due to an unsolved contingency. Operational Information Cancelled
Jan 04 2020 10:42:58 CST At 09:45, ERCOT took manual actions using the EASTEX GTC for the SCSES to TRSES 345kV line outage due to an unsolved contingency. Operational Information Active
Jan 04 2020 08:48:03 CST The Daily RSASM for Saturday, January 4, 2020 will not be occurring due to zero participating QSEs Operational Information Active
Jan 04 2020 00:49:14 CST No sudden loss of generation greater than 450 MW occurred on January 03, 2020. Operational Information Active
Jan 03 2020 15:27:39 CST ERCOT has cancelled the following notice: ERCOT is bypassing the GAUSS series capacitor GAUSS_C1 for SSR mitigation. Operational Information Cancelled
Jan 03 2020 08:47:15 CST The Daily RSASM for Friday, January 3, 2020 will not be occurring due to zero participating QSEs Operational Information Active
Jan 03 2020 07:36:31 CST ERCOT is bypassing the GAUSS series capacitor GAUSS_C1 for SSR mitigation. Operational Information Active
Jan 03 2020 01:18:02 CST No sudden loss of generation greater than 450 MW occurred on January 02, 2020. Operational Information Active
Jan 02 2020 08:48:20 CST The Daily RSASM for Thursday, January 2, 2020 will not be occurring due to zero participating QSEs Operational Information Active
Jan 02 2020 00:05:20 CST On 01/01/2020, a sudden loss of generation occurred at 12:53:11 totaling 1205.12 MW. Frequency declined to 59.745 Hz, ERCOT load was 40, 014 MW. Operational Information Active
Jan 01 2020 12:57:53 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 01 2020 08:46:03 CST The Daily RSASM for Wednesday, January 1, 2020 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 01 2020 02:49:11 CST No sudden loss of generation greater than 450 MW occurred on December 31, 2019. Operational Information Active