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.)

    Apr 2016 May 2016 Jun 2016 Jul 2016 Aug 2016 Sep 2016
    Date Message Type Status
    Sep 26 2016 00:01:04 CST No sudden loss of generation greater than 450 MW occurred on 09/25/2016 Operational Information Active
    Sep 25 2016 08:47:11 CST The Daily RSASM for Sunday, September 25, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 25 2016 00:20:37 CST No sudden loss of generation greater than 450 MW occurred on 09/24/2016 Operational Information Active
    Sep 24 2016 08:47:12 CST The Daily RSASM for Saturday, September 24, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 24 2016 00:18:50 CST No sudden loss of generation greater than 450 MW occurred on 09/23/2016 Operational Information Active
    Sep 23 2016 08:51:06 CST The Daily RSASM for Friday, September 23, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 23 2016 02:10:52 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 01:16 09/23/2016 through 23:59 09/23/2016 due to a forced outage. Operational Information Cancelled
    Sep 23 2016 01:19:23 CST DC Tie Outage: The North DC Tie will be unavailable from 01:16 09/23/2016 through 23:59 09/23/2016 due to a forced outage. Operational Information Active
    Sep 23 2016 01:14:38 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 00:51 09/23/2016 through 23:59 09/23/2016 due to a forced outage. Operational Information Cancelled
    Sep 23 2016 01:05:56 CST DC Tie Outage: The North DC Tie will be unavailable from 00:51 09/23/2016 through 23:59 09/23/2016 due to a forced outage. Operational Information Active
    Sep 23 2016 00:16:56 CST No sudden loss of generation greater than 450 MW occurred on 09/22/2016 Operational Information Active
    Sep 22 2016 08:46:55 CST The Daily RSASM for Thursday, September 22, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 22 2016 00:05:44 CST No sudden loss of generation greater than 450 MW occurred on 09/21/2016 Operational Information Active
    Sep 21 2016 08:51:36 CST Daily RSASM for Wednesday, September 21, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 21 2016 00:09:03 CST No sudden loss of generation greater than 450 MW occurred on 09/20/2016 Operational Information Active
    Sep 20 2016 08:50:05 CST Daily RSASM for Tuesday, September 20, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 20 2016 01:01:52 CST No sudden loss of generation greater than 450 MW occurred on 09/19/2016. Operational Information Active
    Sep 19 2016 18:30:54 CST ERCOT has cancelled the following notice: At 5:25 PM on 09/19/2016, 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 Cancelled
    Sep 19 2016 18:30:51 CST ERCOT has cancelled the following notice: At 5:25 PM on 09/19/2016, 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 Cancelled
    Sep 19 2016 18:30:47 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 19 2016 15:27:25 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 19 2016 12:16:19 CST At 5:25 PM on 09/19/2016, 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
    Sep 19 2016 08:50:45 CST Daily RSASM for Monday, September 19, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 19 2016 00:14:32 CST No sudden loss of generation greater than 450 MW occurred on 09/18/2016. Operational Information Active
    Sep 18 2016 18:45:01 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 18 2016 17:18:57 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 06:19 09/18/2016 through 00:00 09/19/2016 due to a forced outage. Operational Information Cancelled
    Sep 18 2016 15:11:56 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 18 2016 08:51:02 CST Daily RSASM for Sunday, September 18, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 18 2016 06:47:14 CST DC Tie Outage: The North DC Tie will be unavailable from 06:19 09/18/2016 through 00:00 09/19/2016 due to a forced outage. Operational Information Active
    Sep 18 2016 00:11:45 CST No sudden loss of generation greater than 450 MW occurred on 09/17/2016. Operational Information Active
    Sep 17 2016 19:32:23 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 17 2016 14:00:57 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 17 2016 08:50:15 CST Daily RSASM for Saturday, September 17, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 17 2016 01:18:41 CST No sudden loss of generation greater than 450 MW occurred on 09/16/2016. Operational Information Active
    Sep 16 2016 19:22:29 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for Projected Reserve Capacity Shortage for operating day 9/16/16 for HE 14 thru HE 19. OCN Cancelled
    Sep 16 2016 11:18:22 CST ERCOT has cancelled the following notice: The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 16 2016 11:18:16 CST ERCOT has cancelled the following notice: The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 16 2016 08:46:35 CST Daily RSASM for Friday, September 16, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 16 2016 08:46:21 CST Daily RSASM for Friday, September 16, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 16 2016 02:34:10 CST ERCOT is issuing an OCN for Projected Reserve Capacity Shortage for operating day 9/16/16 for HE 14 thru HE 19. OCN Active
    Sep 16 2016 01:08:59 CST The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Active
    Sep 16 2016 00:09:38 CST No sudden loss of generation greater than 450 MW occurred on 09/15/2016. Operational Information Active
    Sep 15 2016 17:22:47 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 15 2016 15:06:27 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 15 2016 11:21:50 CST ERCOT has cancelled the following notice: The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 15 2016 08:48:30 CST Daily RSASM for Thursday, September 15, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 15 2016 04:21:25 CST ERCOT has cancelled the following notice: At 03:53 ERCOT is issuing a Watch due to HRUC not completing for HE05 due to failure, timeline deviation. Operational Information Cancelled
    Sep 15 2016 04:01:20 CST At 03:53 ERCOT is issuing a Watch due to HRUC not completing for HE05 due to failure, timeline deviation. Operational Information Active
    Sep 15 2016 01:06:19 CST The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Active
    Sep 15 2016 00:01:01 CST No sudden loss of generation greater than 450 MW occurred on 09/14/2016. Operational Information Active
    Sep 14 2016 12:53:07 CST ERCOT has cancelled the following notice: The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 14 2016 08:48:12 CST Daily RSASM for Wednesday, September 14, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 14 2016 01:04:39 CST The Barney Davis Primary and Alternate SPS has been taken out of service/removed from RTCA. Operational Information Active
    Sep 14 2016 00:06:12 CST No sudden loss of generation greater than 450 MW occurred on 09/13/2016. Operational Information Active
    Sep 13 2016 11:36:32 CST ERCOT has cancelled the following notice: The Barney Davis SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 13 2016 08:46:33 CST Daily RSASM for Tuesday, September 13, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 13 2016 01:09:35 CST The Barney Davis SPS has been taken out of service/removed from RTCA. Operational Information Active
    Sep 13 2016 00:07:03 CST No sudden loss of generation greater than 450 MW occurred on 09/12/2016. Operational Information Active
    Sep 12 2016 11:56:05 CST ERCOT has cancelled the following notice: The Barney Davis SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Sep 12 2016 09:47:08 CST Railroad DC Tie outage complete and tie released for full load. Operational Information Active
    Sep 12 2016 08:46:28 CST Daily RSASM for Monday, September 12, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 12 2016 01:44:07 CST The Barney Davis SPS has been taken out of service/removed from RTCA. Operational Information Active
    Sep 12 2016 01:14:17 CST No sudden loss of generation greater than 450 MW occurred on 09/11/2016. Operational Information Active
    Sep 11 2016 08:47:28 CST Daily RSASM for Sunday, September 11, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 11 2016 00:52:35 CST No sudden loss of generation greater than 450 MW occurred on 09/10/2016. Operational Information Active
    Sep 10 2016 15:12:24 CST ERCOT has cancelled the following notice: At 2:25 PM on 09/10/2016, 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 Cancelled
    Sep 10 2016 15:12:18 CST ERCOT has cancelled the following notice: At 2:25 PM on 09/10/2016, 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 Cancelled
    Sep 10 2016 12:34:57 CST At 2:25 PM on 09/10/2016, 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
    Sep 10 2016 08:50:52 CST Daily RSASM for Saturday, September 10, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 10 2016 01:03:17 CST No sudden loss of generation greater than 450 MW occurred on 09/09/2016. Operational Information Active
    Sep 10 2016 01:02:04 CST ERCOT has cancelled the following notice: ERCOT is working from the Primary Control Center until further notice. Operational Information Cancelled
    Sep 09 2016 08:47:52 CST Daily RSASM for Friday, September 9, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 09 2016 04:39:58 CST ERCOT is working from the Primary Control Center until further notice. Operational Information Active
    Sep 09 2016 04:38:36 CST ERCOT has cancelled the following notice: As of 16:30 on 9/8/16 ERCOT is working from alternate control center until further notice. Operational Information Cancelled
    Sep 09 2016 00:29:15 CST On 09/08/2016, a sudden loss of generation occurred at 13:23 totaling 581 MW. Frequency declined to 59.897 Hz, ERCOT load was 60, 393 MW Operational Information Active
    Sep 08 2016 20:15:35 CST ERCOT has cancelled the following notice: ERCOT has declared a WATCH due to the failure of the SCED process, starting at 19:45 Operational Information Cancelled
    Sep 08 2016 20:07:34 CST ERCOT has declared a WATCH due to the failure of the SCED process, starting at 19:45 Operational Information Active
    Sep 08 2016 20:05:46 CST ERCOT has cancelled the following notice: ERCOT has declared an Emergency due to the failure of the SCED process, starting at 19:45. Watch Cancelled
    Sep 08 2016 19:56:37 CST SCED Failure: ERCOT has declared an Emergency due to the failure of the SCED process, starting at 19:45. Watch Active
    Sep 08 2016 16:35:56 CST As of 16:30 on 9/8/16 ERCOT is working from alternate control center until further notice. Operational Information Active
    Sep 08 2016 08:48:32 CST Daily RSASM for Thursday, September 8, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 08 2016 00:46:08 CST No sudden loss of generation greater than 450 MW occurred on 09/07/2016. Operational Information Active
    Sep 07 2016 08:57:32 CST Daily RSASM for Wednesday, September 7, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 07 2016 01:07:48 CST No sudden loss of generation greater than 450 MW occurred on 09/06/2016. Operational Information Active
    Sep 06 2016 10:52:19 CST ERCOT has cancelled the following notice: ONCOR/TO (Ray) reports at 09:35, 9/6/16, the Eskota Switch SPS #39 has been removed from service. Operational Information Cancelled
    Sep 06 2016 09:53:17 CST ONCOR/TO (Ray) reports at 09:35, 9/6/16, the Eskota Switch SPS #39 has been removed from service. Operational Information Active
    Sep 06 2016 08:48:20 CST Daily RSASM for Tuesday, September 6, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 06 2016 01:04:40 CST No sudden loss of generation greater than 450 MW occurred on 09/05/2016. Operational Information Active
    Sep 05 2016 08:48:44 CST Daily RSASM for Monday, September 5, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 05 2016 02:51:05 CST No sudden loss of generation greater than 450 MW occurred on 09/04/2016 Operational Information Active
    Sep 04 2016 08:48:03 CST Daily RSASM for Sunday, September 4, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 04 2016 02:35:56 CST No sudden loss of generation greater than 450 MW occurred on 09/03/2016 Operational Information Active
    Sep 03 2016 18:31:59 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Sep 03 2016 15:02:56 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Sep 03 2016 08:49:38 CST Daily RSASM for Saturday, September 3, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 03 2016 02:35:28 CST No sudden loss of generation greater than 450 MW occurred on 09/02/2016 Operational Information Active
    Sep 02 2016 18:29:38 CST Per Sharyland TO, Railroad DC Tie beginning at 00:00 on 09-03-16, will be limited to 150mw flow, by placing one Unit in outage due to alarms. Operational Information Active
    Sep 02 2016 09:36:06 CST ONCOR's ALNSW SPS 15 has been retired from service. Operational Information Active
    Sep 02 2016 08:48:38 CST Daily RSASM for Friday, September 2, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 02 2016 03:19:17 CST No sudden loss of generation greater than 450 MW occurred on 09/01/2016 Operational Information Active
    Sep 01 2016 08:49:31 CST Daily RSASM for Thursday, September 1, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Sep 01 2016 00:59:49 CST On 08/31/2016, a sudden loss of generation occurred at 02:53 totaling 596 MW. Frequency declined to 59.888 Hz, ERCOT load was 35, 257 MW Operational Information Active