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.)

    Jul 2017 Aug 2017 Sep 2017 Oct 2017 Nov 2017 Dec 2017
    Date Message Type Status
    Dec 17 2017 19:35:20 CST The Laredo DC Tie will remain unavailable thru 17:00 on Monday, December 18, 2017 due to the Extension of a Planned Outage. Operational Information Active
    Dec 17 2017 08:46:08 CST The Daily RSASM for Sunday, December 17, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 17 2017 00:09:28 CST No sudden loss of generation greater than 450 MW occurred on December 16, 2017. Operational Information Active
    Dec 16 2017 23:16:45 CST ERCOT has cancelled the following notice: The Laredo VFTs DC Tie will continue to be unavailable from 08:00 12/16/2017 through 20:00 12/17/2017 due to a forced extension of a planned outage. Operational Information Cancelled
    Dec 16 2017 13:27:23 CST ERCOT has cancelled the following notice: The Laredo VFTs DC Tie will be unavailable from 08:00 12/16/2017 through 18:00 12/16/2017 due to a planned outage. Operational Information Cancelled
    Dec 16 2017 13:27:05 CST The Laredo VFTs DC Tie will continue to be unavailable from 08:00 12/16/2017 through 20:00 12/17/2017 due to a forced extension of a planned outage. Operational Information Active
    Dec 16 2017 08:46:41 CST The Daily RSASM for Saturday, December 16, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 16 2017 00:45:30 CST No sudden loss of generation greater than 450 MW occurred on December 15, 2017. Operational Information Active
    Dec 15 2017 09:34:27 CST DC Tie Outage: The Laredo VFTs DC Tie will be unavailable from 08:00 12/16/2017 through 18:00 12/16/2017 due to a planned outage. Operational Information Active
    Dec 15 2017 08:49:27 CST The Daily RSASM for Friday, December 15, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 15 2017 02:39:42 CST No sudden loss of generation greater than 450 MW occurred on December 14, 2017. Operational Information Active
    Dec 14 2017 20:07:08 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Dec 14 2017 08:48:04 CST The Daily RSASM for Thursday, December 14, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 14 2017 07:01:56 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Dec 14 2017 03:29:22 CST No sudden loss of generation greater than 450 MW occurred on December 13, 2017. Operational Information Active
    Dec 13 2017 18:01:48 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Dec 13 2017 08:50:54 CST The Daily RSASM for Wednesday December 13, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 13 2017 06:42:59 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Dec 13 2017 04:46:22 CST ERCOT has cancelled the following notice: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/12/2017 through 16:00 12/12/2017 due to a planned outage. Operational Information Cancelled
    Dec 13 2017 04:46:06 CST ERCOT has cancelled the following notice: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/11/2017 through 16:00 12/11/2017 due to a planned outage. Operational Information Cancelled
    Dec 13 2017 00:14:07 CST No sudden loss of generation greater than 450 MW occurred on December 12, 2017. Operational Information Active
    Dec 12 2017 19:24:44 CST ERCOT has cancelled the following notice: The Wirtz RAS has been taken out of service. Operational Information Cancelled
    Dec 12 2017 19:02:27 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Dec 12 2017 08:46:52 CST The Daily RSASM for Tuesday December 12, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 12 2017 06:41:26 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Dec 11 2017 21:36:30 CST ERCOT has cancelled the following notice: At 16:00, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to a force extension of a planned outage. Watch Cancelled
    Dec 11 2017 21:35:52 CST ERCOT has cancelled the following notice: At 16:00, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to a force extension of a planned outage. Watch Cancelled
    Dec 11 2017 19:47:04 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Dec 11 2017 19:32:54 CST ERCOT has cancelled the following notice: At 15:25 on 12/11/2017, Ercot will perform site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 30 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This even will be preceded by a "hot line" call shortly before beginning. Operational Information Cancelled
    Dec 11 2017 19:32:34 CST ERCOT has cancelled the following notice: At 15:25 on 12/11/2017, Ercot will perform site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 30 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This even will be preceded by a "hot line" call shortly before beginning. Operational Information Cancelled
    Dec 11 2017 17:07:19 CST ERCOT has cancelled the following notice: At 16:00, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to a force extension of a planned outage. Watch Cancelled
    Dec 11 2017 15:56:12 CST At 16:00, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to a force extension of a planned outage. Watch Active
    Dec 11 2017 15:55:32 CST At 16:00, ERCOT is issuing a Transmission Watch for the Eagle Pass DC Tie due to a force extension of a planned outage. Watch Active
    Dec 11 2017 10:16:09 CST At 15:25 on 12/11/2017, Ercot will perform site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 30 minutes, and real-time communications will be unavailable for about 5 minutes. All systems should re-establish communications automatically. This even will be preceded by a "hot line" call shortly before beginning. Operational Information Active
    Dec 11 2017 10:15:24 CST The Wirtz RAS has been taken out of service. Operational Information Active
    Dec 11 2017 08:47:05 CST The Daily RSASM for Monday December 11, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 11 2017 06:35:28 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Dec 11 2017 06:35:00 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Dec 11 2017 02:15:24 CST No sudden loss of generation greater than 450 MW occurred on December 10, 2017. Operational Information Active
    Dec 10 2017 08:46:41 CST The Daily RSASM for Sunday, December 10, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 10 2017 02:36:54 CST No sudden loss of generation greater than 450 MW occurred on December 9, 2017. Operational Information Active
    Dec 09 2017 16:22:26 CST No sudden loss of generation greater than 450 MW occurred on December 8, 2017. Operational Information Active
    Dec 09 2017 08:47:07 CST The Daily RSASM for Saturday, December 9, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 08 2017 09:59:33 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Emergency for Far West Texas due to Voltage Stability. Operational Information Cancelled
    Dec 08 2017 09:58:14 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Emergency for Far West Texas due to Voltage Stability. Operational Information Cancelled
    Dec 08 2017 08:52:30 CST The Daily RSASM for Friday, December 8, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 08 2017 06:58:11 CST ERCOT has cancelled the following notice: ERCOT is issuing a Transmission Emergency due to expected cascading condition in the San Antonio area which is in the CPSB service area. Operational Information Cancelled
    Dec 08 2017 05:51:55 CST ERCOT has cancelled the following notice: At 17:13 Ercot is operating from their alternate control center until further notice. Use OPX numbers for Bastrop. Operational Information Cancelled
    Dec 08 2017 01:53:47 CST The Barney Davis RAS has been taken out of service/removed from RTCA. Operational Information Active
    Dec 08 2017 00:30:54 CST On 12/07/2017 a sudden loss of generation occurred at 20:43 totaling 700MW’s. Frequency declined to 59.931 Hz, Ercot load was 51, 900 MW. Operational Information Active
    Dec 07 2017 22:16:37 CST ERCOT is issuing a Transmission Emergency due to expected cascading condition in the San Antonio area which is in the CPSB service area. Operational Information Active
    Dec 07 2017 17:21:47 CST At 17:13 Ercot is operating from their alternate control center until further notice. Use OPX numbers for Bastrop. Operational Information Active
    Dec 07 2017 16:12:04 CST ERCOT is issuing a Transmission Emergency for Far West Texas due to Voltage Stability. Operational Information Active
    Dec 07 2017 00:13:33 CST No sudden loss of generation greater than 450 MW occurred on December 6, 2017. Operational Information Active
    Dec 06 2017 13:30:55 CST DC Tie Outage: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/12/2017 through 16:00 12/12/2017 due to a planned outage. Operational Information Active
    Dec 06 2017 13:29:51 CST DC Tie Outage: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/11/2017 through 16:00 12/11/2017 due to a planned outage. Operational Information Active
    Dec 06 2017 13:29:01 CST ERCOT has cancelled the following notice: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/11/2017 through 16:00 12/12/2017 due to a planned outage. Operational Information Cancelled
    Dec 06 2017 13:25:35 CST DC Tie Outage: The DC Eagle Pass DC Tie will be unavailable from 09:00 12/11/2017 through 16:00 12/12/2017 due to a planned outage. Operational Information Active
    Dec 06 2017 08:47:28 CST The Daily RSASM for Wednesday, December 6, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 06 2017 00:38:39 CST No sudden loss of generation greater than 450 MW occurred on December 5, 2017. Operational Information Active
    Dec 05 2017 16:28:21 CST ERCOT has cancelled the following notice: The Barney Davis RAS has been taken out of service. Operational Information Cancelled
    Dec 05 2017 15:51:18 CST The Barney Davis RAS has been taken out of service. Operational Information Active
    Dec 05 2017 08:49:25 CST The Daily RSASM for Tuesday, December 5, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 05 2017 00:48:43 CST No sudden loss of generation greater than 450 MW occurred on December 4, 2017. Operational Information Active
    Dec 04 2017 08:47:52 CST The Daily RSASM for Monday, December 4, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 04 2017 00:02:36 CST No sudden loss of generation greater than 450 MW occurred on December 3, 2017. Operational Information Active
    Dec 03 2017 08:46:32 CST The Daily RSASM for Sunday, December 03, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 03 2017 00:00:57 CST No sudden loss of generation greater than 450 MW occurred on December 2, 2017. Operational Information Active
    Dec 02 2017 08:47:29 CST The Daily RSASM for Saturday, December 02, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 02 2017 00:01:48 CST No sudden loss of generation greater than 450 MW occurred on December 1, 2017. Operational Information Active
    Dec 01 2017 08:47:51 CST The Daily RSASM for Friday, December 01, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Dec 01 2017 04:44:28 CST ERCOT has cancelled the following notice: No sudden loss of generation greater than 450 MW occurred on November 30, 2017. Operational Information Cancelled
    Dec 01 2017 04:44:22 CST ERCOT has cancelled the following notice: No sudden loss of generation greater than 450 MW occurred on November 30, 2017. Operational Information Cancelled
    Dec 01 2017 00:25:22 CST No sudden loss of generation greater than 450 MW occurred on November 30, 2017. Operational Information Active
    Dec 01 2017 00:23:51 CST No sudden loss of generation greater than 450 MW occurred on November 30, 2017. Operational Information Active