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 2018 Jan 2019 Feb 2019 Mar 2019 Apr 2019 May 2019
Date Message Type Status
Jan 31 2019 08:48:29 CST The Daily RSASM for Thursday, January 31, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 31 2019 00:11:20 CST No sudden loss of generation greater than 450 MW occurred on January 30, 2019. Operational Information Active
Jan 30 2019 08:46:18 CST The Daily RSASM for Wednesday, January 30, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 30 2019 03:01:02 CST No sudden loss of generation greater than 450 MW occurred on January 29, 2019. Operational Information Active
Jan 29 2019 12:19:33 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service. Operational Information Cancelled
Jan 29 2019 08:46:09 CST The Daily RSASM for Tuesday, January 29, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 29 2019 08:31:20 CST The Barney Davis RAS has been taken out of service. Operational Information Active
Jan 29 2019 00:13:08 CST No sudden loss of generation greater than 450 MW occurred on January 28, 2019. Operational Information Active
Jan 28 2019 16:28:08 CST ERCOT will be working from the Primary Control Center, use the OPX numbers for Taylor. Operational Information Active
Jan 28 2019 15:36:06 CST DAM is complete DRUC will begin at 16:35 Operational Information Active
Jan 28 2019 13:26:19 CST ERCOT has postponed the deadline for the posting of the DAM solution for Operating Day January 29th, 2019 due to an internal issue that is being resolved. Operational Information Active
Jan 28 2019 08:46:57 CST The Daily RSASM for Monday, January 28, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 28 2019 00:05:02 CST On Jan 27, 2019, a sudden loss of generation occurred at 06:05 totaling 510 MW. Frequency declined to 59.909 Hz, ERCOT load was 37, 480 MW. Operational Information Active
Jan 28 2019 00:03:52 CST ERCOT has cancelled the following notice: On Jan 27, 2019, a sudden loss of generation occurred at 06:05 totaling 510 MW. Frequency declined to 59.609 Hz, ERCOT load was 37, 480 MW. Operational Information Cancelled
Jan 28 2019 00:02:19 CST On Jan 27, 2019, a sudden loss of generation occurred at 06:05 totaling 510 MW. Frequency declined to 59.609 Hz, ERCOT load was 37, 480 MW. Operational Information Active
Jan 27 2019 08:46:28 CST The Daily RSASM for Sunday, January 27, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 27 2019 00:00:51 CST No sudden loss of generation greater than 450 MW occurred on January 26, 2019. Operational Information Active
Jan 26 2019 08:47:11 CST The Daily RSASM for Saturday, January 26, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 26 2019 00:00:29 CST No sudden loss of generation greater than 450 MW occurred on January 25, 2019. Operational Information Active
Jan 25 2019 10:00:55 CST ERCOT has cancelled the following notice: The Eagle Pass DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Cancelled
Jan 25 2019 08:46:50 CST The Daily RSASM for Friday, January 25, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 25 2019 08:34:34 CST DC Tie Curtailment Notice: The Eagle Pass DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Active
Jan 25 2019 01:34:41 CST No sudden loss of generation greater than 450 MW occurred on January 24, 2019 Operational Information Active
Jan 25 2019 01:34:31 CST No sudden loss of generation greater than 450 MW occurred on January 24, 2019 Operational Information Active
Jan 24 2019 08:48:02 CST The Daily RSASM for Thursday, January 24, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 24 2019 02:06:08 CST No sudden loss of generation greater than 450 MW occurred on January 23, 2019 Operational Information Active
Jan 23 2019 17:37:18 CST ERCOT will be working from the alternate control center until further notice. Operational Information Active
Jan 23 2019 11:27:16 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
Jan 23 2019 09:10:29 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
Jan 23 2019 08:53:02 CST The Daily RSASM for Wednesday, January 23, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 23 2019 00:47:10 CST On Jan 22, 2019, a sudden loss of generation occurred at 0705 totaling 686 MW. Frequency declined to 59.870 Hz, ERCOT load was 39, 665 MW. Operational Information Active
Jan 22 2019 09:00:26 CST The Daily RSASM for Tuesday, January 22, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 22 2019 07:10:12 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 22 2019 07:05:12 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 22 2019 02:30:42 CST No sudden loss of generation greater than 450 MW occurred on January 21, 2019 Operational Information Active
Jan 21 2019 08:48:42 CST The Daily RSASM for Monday, January 21, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 21 2019 08:35:54 CST At 3:25 PM on 01/21/2019, 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 21 2019 00:10:41 CST No sudden loss of generation greater than 450 MW occurred on January 20, 2019. Operational Information Active
Jan 20 2019 08:45:20 CST The Daily RSASM for Sunday, January 20, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 20 2019 00:14:04 CST No sudden loss of generation greater than 450 MW occurred on January 19, 2019. Operational Information Active
Jan 19 2019 08:45:45 CST The Daily RSASM for Saturday, January 19, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 19 2019 00:06:02 CST No sudden loss of generation greater than 450 MW occurred on January 18, 2019. Operational Information Active
Jan 18 2019 08:45:44 CST The Daily RSASM for Friday, January 18, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 18 2019 00:20:08 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Jan 18 2019 00:14:48 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Jan 18 2019 00:02:54 CST No sudden loss of generation greater than 450 MW occurred on January 17, 2019. Operational Information Active
Jan 17 2019 08:45:39 CST The Daily RSASM for Thursday, January 17, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 17 2019 00:01:02 CST No sudden loss of generation greater than 450 MW occurred on January 16, 2019. Operational Information Active
Jan 16 2019 15:21:38 CST ERCOT will execute a SASM at 15:45 for operating day 01/16/19 for HE18 for REGUP MW 9.9 and for REGDN MW 6.6. Operational Information Active
Jan 16 2019 12:48:09 CST DC Tie Outage: The Laredo VFT (LARDVFT) DC Tie will be unavailable from 09:00 01/21/2019 through 16:30 01/25/2019 due to a planned outage. Operational Information Active
Jan 16 2019 08:50:00 CST The Daily RSASM for Wednesday, January 16, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 16 2019 00:00:33 CST No sudden loss of generation greater than 450 MW occurred on January 15, 2019. Operational Information Active
Jan 15 2019 09:08:31 CST The Daily RSASM for Tuesday, January 15, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 15 2019 00:00:05 CST No sudden loss of generation greater than 450 MW occurred on January 14, 2019. Operational Information Active
Jan 14 2019 08:54:19 CST The Daily RSASM for Monday, January 14, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 14 2019 02:00:34 CST No sudden loss of generation greater than 450 MW occurred on January 13, 2019 Operational Information Active
Jan 13 2019 08:47:01 CST The Daily RSASM for Sunday January 13, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 13 2019 02:26:28 CST ERCOT will execute a SASM at 02:45 for operating day January 13, 2019 for HE 5-24 for RegDn RegUp. RegUp HE 5 14.2mw, HE 6-10 12.2mw, HE 11-15 14.2mw, HE 16-18 12.2mw, HE 20-24 14.2mw RegDn HE 5-10 12.7mw, HE 11-15 13mw, HE 16-24 12.7mw Operational Information Active
Jan 13 2019 00:44:30 CST No sudden loss of generation greater than 450 MW occurred on January 12, 2019 Operational Information Active
Jan 12 2019 08:52:12 CST The Daily RSASM for Saturday January 12, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 12 2019 00:14:36 CST No sudden loss of generation greater than 450 MW occurred on January 11, 2019 Operational Information Active
Jan 11 2019 08:48:55 CST The Daily RSASM for Friday January 11, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 11 2019 07:51:52 CST ERCOT is working from primary Control Center. Operational Information Active
Jan 11 2019 00:03:21 CST No sudden loss of generation greater than 450 MW occurred on January 10, 2019 Operational Information Active
Jan 10 2019 16:22:10 CST ERCOT is working from alternate Control Center. Operational Information Active
Jan 10 2019 08:47:18 CST The Daily RSASM for Thursday January 10, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 10 2019 00:07:22 CST No sudden loss of generation greater than 450 MW occurred on January 09, 2019 Operational Information Active
Jan 09 2019 08:45:23 CST The Daily RSASM for Wednesday January 9, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 09 2019 00:15:28 CST No sudden loss of generation greater than 450 MW occurred on January 08, 2019 Operational Information Active
Jan 08 2019 08:45:21 CST The Daily RSASM for Tuesday January 8, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 08 2019 00:25:55 CST No sudden loss of generation greater than 450 MW occurred on January 07, 2019 Operational Information Active
Jan 07 2019 08:45:22 CST The Daily RSASM for Monday January 7, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Jan 07 2019 00:03:12 CST No sudden loss of generation greater than 450 MW occurred on January 06, 2019 Operational Information Active
Jan 06 2019 08:47:03 CST The Daily RSASM for Sunday January 6, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 06 2019 01:26:11 CST No sudden loss of generation greater than 450 MW occurred on January 05, 2019 Operational Information Active
Jan 05 2019 08:47:21 CST The Daily RSASM for Saturday January 5, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 05 2019 00:04:06 CST No sudden loss of generation greater than 450 MW occurred on January 04, 2019 Operational Information Active
Jan 04 2019 09:25:28 CST ERCOT has cancelled the following notice: ERCOT is using constraint SSONFRI8 to pre-posture for a planned outage. Operational Information Active
Jan 04 2019 08:47:07 CST The Daily RSASM for Friday January 4, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 04 2019 08:35:57 CST ERCOT is using constraint SSONFRI8 to pre-posture for a planned outage. Operational Information Active
Jan 04 2019 01:40:06 CST ERCOT has cancelled the following notice: At 23:56 ERCOT will perform a database load on its Energy Market Management Systems. During this time, SCED Base Points will reflect accurate dispatch instructions. In the event ICCP is temporarily suspended, all systems should re-establish automatically within a few minutes. Operational Information Cancelled
Jan 04 2019 01:39:50 CST No sudden loss of generation greater than 450 MW occurred on January 03, 2019 Operational Information Active
Jan 03 2019 23:39:39 CST At 23:56 ERCOT will perform a database load on its Energy Market Management Systems. During this time, SCED Base Points will reflect accurate dispatch instructions. In the event ICCP is temporarily suspended, all systems should re-establish automatically within a few minutes. Operational Information Active
Jan 03 2019 14:58:59 CST At 15:00 ERCOT is cancelling the OCN issued 12/30/2018 for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 01/02/19 – 01/03/19. Operational Information Active
Jan 03 2019 08:48:00 CST The Daily RSASM for Thursday January 3, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 03 2019 00:54:01 CST On 01/02/2019 a sudden loss of generation occurred at 11:25 totaling 518 MW. Frequency declined to 59.912 Hz, ERCOT load was 51, 312 MW. Operational Information Active
Jan 02 2019 08:46:35 CST The Daily RSASM for Wednesday, January 2, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 02 2019 00:01:06 CST No sudden loss of generation greater than 450 MW occurred on January 01, 2019 Operational Information Active
Jan 01 2019 08:47:32 CST The Daily RSASM for Tuesday, January 1, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Jan 01 2019 00:26:25 CST No sudden loss of generation greater than 450 MW occurred on December 31, 2018 Operational Information Active