Operations Messages

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

Jun 2014 Jul 2014 Aug 2014 Sep 2014 Oct 2014 Nov 2014
Date Message Type Status
Nov 26 2014 05:55:40 CST No sudden loss of generation greater than 450 MW occurred on 11/25/14. Operational Information Active
Nov 25 2014 08:47:17 CST Daily reconfiguration SASM for Tuesday, November 25, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 25 2014 07:26:36 CST No sudden loss of generation greater than 450 MW occurred on 11/24/14. Operational Information Active
Nov 24 2014 08:47:47 CST Daily reconfiguration SASM for Monday, November 24, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 24 2014 06:23:43 CST No sudden loss of generation greater than 450 MW occurred on 11/23/14. Operational Information Active
Nov 23 2014 08:48:30 CST Daily reconfiguration SASM for Sunday, November 23, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 23 2014 06:01:59 CST No sudden loss of generation greater than 450 MW occurred on 11/22/14. Operational Information Active
Nov 22 2014 11:34:49 CST ERCOT has cancelled the following notice: ERCOT has issued a Watch due to SCED failure. Operational Information Cancelled
Nov 22 2014 10:23:19 CST ERCOT has issued a Watch due to SCED failure. Operational Information Active
Nov 22 2014 09:24:27 CST Daily reconfiguration SASM for Saturday, November 22, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 22 2014 05:23:02 CST On 11/21/14, a sudden loss of generation occurred at 05:13 totaling 787 MW. Frequency declined to 59.756 Hz, ERCOT load was 27, 936 MW. Another sudden loss of generation occurred at 16:37 totaling 471 MW. Frequency declined to 59.872 Hz, ERCOT load was 34, 278 MW. Operational Information Active
Nov 22 2014 05:11:16 CST ERCOT has cancelled the following notice: As of 05:10, ERCOT is operating out of their alternate control center Operational Information Cancelled
Nov 21 2014 11:38:43 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 10:00 11/21/2014 through 23:59 11/21/2014 due to a planned outage. Operational Information Cancelled
Nov 21 2014 11:38:14 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 20:20 11/20/2014 through 10:00 11/21/2014 due to a forced outage. Operational Information Cancelled
Nov 21 2014 08:55:14 CST DC Tie Outage: The North DC Tie will be unavailable from 10:00 11/21/2014 through 23:59 11/21/2014 due to a planned outage. Operational Information Active
Nov 21 2014 08:54:09 CST Daily Reconfiguration SASM for Friday, November 21, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 21 2014 07:34:43 CST No sudden loss of generation greater than 450 MW occurred on 11/20/14. Operational Information Active
Nov 21 2014 00:01:52 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 20:13 11/20/2014 through 06:00 11/21/2014 due to a forced outage. Operational Information Cancelled
Nov 21 2014 00:01:29 CST DC Tie Outage: The North DC Tie will be unavailable from 20:20 11/20/2014 through 10:00 11/21/2014 due to a forced outage. Operational Information Active
Nov 20 2014 23:52:51 CST DC Tie Outage: The North DC Tie will be unavailable from 20:13 11/20/2014 through 06:00 11/21/2014 due to a forced outage. Operational Information Active
Nov 20 2014 08:47:26 CST Daily Reconfiguration SASM for Thursday, November 20, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 20 2014 08:37:57 CST On 11/19/14, a sudden loss of generation occurred at 23:09 totaling 420 MW. Frequency declined to 59.907 Hz, ERCOT load was 32, 375 MW. Operational Information Active
Nov 19 2014 10:35:15 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 10:45 11/18/2014 through 18:00 11/19/2014 due to a forced outage. Operational Information Cancelled
Nov 19 2014 10:30:57 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 10:45 11/18/2014 through 18:00 11/19/2014 due to a forced outage. Operational Information Cancelled
Nov 19 2014 08:46:42 CST Daily Reconfiguration SASM for Wednesday, November 19, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 19 2014 08:10:50 CST No sudden loss of generation greater than 450 MW occurred on 11/18/14. Operational Information Active
Nov 18 2014 14:08:52 CST At 3:20 PM on 11/19/2014, ERCOT will perform a site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 45 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
Nov 18 2014 11:32:45 CST ERCOT has cancelled the following notice: At 14:00, ERCOT is issuing an OCN due to a strong cold front expected to impact the region this week. OCN Cancelled
Nov 18 2014 10:50:12 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 10:45 11/18/2014 through 18:00 11/19/2014 due to a forced outage. Operational Information Active
Nov 18 2014 09:12:54 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory for early next week due to a stronger surge of cold air, low temperatures are projected to be in the 20s and low 30s for most of the region. Advisory Cancelled
Nov 18 2014 09:01:18 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory for early next week due to a stronger surge of cold air, low temperatures are projected to be in the 20s and low 30s for most of the region. Advisory Cancelled
Nov 18 2014 08:46:03 CST Daily Reconfiguration SASM for Tuesday, November 18, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 18 2014 06:41:38 CST No sudden loss of generation greater than 450 MW occurred on 11/17/14. Operational Information Active
Nov 17 2014 13:06:02 CST ERCOT has cancelled the following notice: Collin Switch SPS has been taken out of service. Operational Information Cancelled
Nov 17 2014 12:19:35 CST ERCOT Core Systems Site Failover to Taylor has been postponed until further notice. Operational Information Active
Nov 17 2014 12:03:38 CST ERCOT has cancelled the following notice: At 3:20 PM on 11/17/2014, ERCOT will perform a site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 45 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
Nov 17 2014 11:40:06 CST Collin Switch SPS has been taken out of service. Operational Information Active
Nov 17 2014 08:46:01 CST Daily Reconfiguration SASM for Monday, November 17, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 17 2014 05:59:51 CST No sudden loss of generation greater than 450 MW occurred on 11/16/14. Operational Information Active
Nov 17 2014 05:29:07 CST As of 05:10, ERCOT is operating out of their alternate control center Operational Information Active
Nov 16 2014 16:03:51 CST AT TIME 16:00 ERCOT IS MOVING FROM AN ADVISORY TO A WATCH DUE TO THE STRONG SURGE OF COLD WITH LOW TEMPERATURES IN THE 20'S AND 30'STHAT IS IMPACTING THE INTERCONNECTION QSE'S ARE INSTRUCTED TO COMPLETE THE FOLLOWING: REVIEW FUEL SUPPLIES REVIEW PLANNED RESOURCE OUTAGES AND CONSIDER DELAYING MAINTENANCE OR RETURNING FROM OUTAGE EARLY REVIEW AND IMPLEMENT WINTER WEATHERIZATION AND EMERGENCY OPERATING PROCEDURES. NOTIFY ERCOT OF ANY CHANGES OR CONDITIONS THAT COOULD EFFECT SYSTEM RELIABILITY. Operational Information Active
Nov 16 2014 15:31:08 CST AT TIME 16:00 ERCOT IS MOVING FROM AN ADVISORY TO A WATCH DUE TO THE STRONG SURGE OF COLD WITH LOW TEMPERATURES IN THE 20'S AND 30'S THAT IS IMPACTING THE INTERCONNECTION QSE'S ARE INSTRUCTED TO COMPLETE THE FOLLOWING: 1 REVIEW FUEL SUPPLIES 2 REVIEW PLANNED RESOURCE OUTAGES AND CONSIDER DELAYING MAINTENANCE OR RETURNING FROM OUTAGE EARLY 3 REVIEW AND IMPLEMENT WINTER WEATHERIZATION AND EMERGENCY OPERATING PROCEDURES. NOTIFY ERCOT OF ANY CHANGES OR CONDITIONS THAT COOULD EFFECT SYSTEM RELIABILITY. Operational Information Active
Nov 16 2014 08:49:00 CST Daily Reconfiguration SASM for Sunday, November 16, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 16 2014 05:55:40 CST No sudden loss of generation greater than 450 MW occurred on 11/15/14. Operational Information Active
Nov 15 2014 08:49:10 CST Daily Reconfiguration SASM for Saturday, November 15, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 15 2014 07:13:31 CST No sudden loss of generation greater than 450 MW occurred on 11/14/14. Operational Information Active
Nov 14 2014 16:54:34 CST At 3:20 PM on 11/17/2014, ERCOT will perform a site failover of its Energy Market Management Systems. During this time, market communications will be unavailable for about 45 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
Nov 14 2014 11:22:15 CST ERCOT is issuing an Advisory for early next week due to a stronger surge of cold air, low temperatures are projected to be in the 20s and low 30s for most of the region. Advisory Active
Nov 14 2014 11:21:56 CST ERCOT is issuing an Advisory for early next week due to a stronger surge of cold air, low temperatures are projected to be in the 20s and low 30s for most of the region. Advisory Active
Nov 14 2014 11:17:27 CST ERCOT has cancelled the following notice: 16:15, ERCOT is moving from an OCN to an Advisory due to the strong cold front in the region with the coldest being Friday during morning peak. Advisory Cancelled
Nov 14 2014 11:17:19 CST ERCOT has cancelled the following notice: 16:15, ERCOT is moving from an OCN to an Advisory due to the strong cold front in the region with the coldest being Friday during morning peak. Advisory Cancelled
Nov 14 2014 08:48:38 CST Daily Reconfiguration SASM for Friday, November 14, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 14 2014 07:29:50 CST No sudden loss of generation greater than 450 MW occurred on 11/13/14. Operational Information Active
Nov 13 2014 23:43:16 CST ERCOT has cancelled the following notice: The EAST DC Tie will be unavailable from 18:01 11/12/2014 through 07:29 11/15/2014 due to a forced outage. Operational Information Cancelled
Nov 13 2014 23:43:04 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 15:22 11/03/2014 through 18:00 11/12/2014 due to a forced outage. Operational Information Cancelled
Nov 13 2014 08:48:21 CST Daily Reconfiguration SASM for Thursday, November 13, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 13 2014 07:03:15 CST No sudden loss of generation greater than 450 MW occurred on 11/12/14. Operational Information Active
Nov 12 2014 16:15:04 CST 16:15, ERCOT is moving from an OCN to an Advisory due to the strong cold front in the region with the coldest being Friday during morning peak. Advisory Active
Nov 12 2014 15:58:02 CST DC Tie Outage: The EAST DC Tie will be unavailable from 07:30 11/15/2014 through 16:00 12/19/2014 due to a planned outage. Operational Information Active
Nov 12 2014 15:51:27 CST DC Tie Outage: The EAST DC Tie will be unavailable from 18:01 11/12/2014 through 07:29 11/15/2014 due to a forced outage. Operational Information Active
Nov 12 2014 08:53:46 CST Daily Reconfiguration SASM for Wednesday, November 12, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 12 2014 05:43:31 CST No sudden loss of generation greater than 450 MW occurred on 11/11/14. Operational Information Active
Nov 11 2014 18:48:12 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 14:30 11/10/2014 through 18:00 11/11/2014 due to a forced outage. Operational Information Cancelled
Nov 11 2014 15:10:57 CST DC Tie Outage: The North DC Tie will be unavailable from 14:30 11/10/2014 through 18:00 11/11/2014 due to a forced outage. Operational Information Active
Nov 11 2014 15:08:41 CST ERCOT has cancelled the following notice: The NORTH DC Tie will be unavailable from 14:27 11/10/2014 through 16:00 11/11/2014 due to a forced outage. Operational Information Cancelled
Nov 11 2014 08:48:42 CST Daily Reconfiguration SASM for Tuesday, November 11, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 11 2014 07:01:19 CST No sudden loss of generation greater than 450 MW occurred on 11/10/14. Operational Information Active
Nov 10 2014 17:17:33 CST DC Tie Outage: The NORTH DC Tie will be unavailable from 14:27 11/10/2014 through 16:00 11/11/2014 due to a forced outage. Operational Information Active
Nov 10 2014 17:15:43 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 00:00 11/10/2014 through 00:00 11/11/2014 due to a forced outage. Operational Information Cancelled
Nov 10 2014 14:58:36 CST DC Tie Outage: The North DC Tie will be unavailable from 00:00 11/10/2014 through 00:00 11/11/2014 due to a forced outage. Operational Information Active
Nov 10 2014 14:01:05 CST At 14:00, ERCOT is issuing an OCN due to a strong cold front expected to impact the region this week. OCN Active
Nov 10 2014 08:51:01 CST Daily Reconfiguration SASM for Monday, November 10, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 10 2014 07:19:35 CST No sudden loss of generation greater than 450 MW occurred on 11/09/14. Operational Information Active
Nov 09 2014 09:55:57 CST ERCOT has cancelled the following notice: Monticello SPS#2 has been taken out of service. Operational Information Cancelled
Nov 09 2014 09:45:02 CST ONCOR reports that the Stanton Wind SPS has been removed from service and Retired. Operational Information Active
Nov 09 2014 08:50:05 CST Daily reconfiguration SASM for Sunday, November 9, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 09 2014 00:44:37 CST No sudden loss of generation greater than 450 MW occurred on 11/08/14. Operational Information Active
Nov 08 2014 08:46:37 CST Daily Reconfiguration SASM for Saturday, November 08, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 08 2014 05:11:25 CST No sudden loss of generation greater than 450 MW occurred on 11/07/14. Operational Information Active
Nov 07 2014 12:24:35 CST ERCOT has cancelled the following notice: Updated at 11/06/2014 08:38 (CS) – The ERCOT EAST DC Tie in both directions will be limited to 0 MW as a result of an unplanned maintenance outage from 11/03/2014 15:22 (CS) to 11/07/2014 16:00 (CS). Operational Information Cancelled
Nov 07 2014 12:23:19 CST ERCOT has cancelled the following notice: Updated at 11/06/2014 08:38 (CS) – The ERCOT EAST DC Tie in both directions will be limited to 0 MW as a result of an unplanned maintenance outage from 11/03/2014 15:22 (CS) to 11/07/2014 16:00 (CS). Operational Information Cancelled
Nov 07 2014 12:22:52 CST DC Tie Outage: The East DC Tie will be unavailable from 15:22 11/03/2014 through 18:00 11/12/2014 due to a forced outage. Operational Information Active
Nov 07 2014 12:20:29 CST Monticello SPS#2 has been taken out of service. Operational Information Active
Nov 07 2014 08:49:14 CST Daily Reconfiguration SASM for Friday, November 07, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 07 2014 07:44:35 CST No sudden loss of generation greater than 450 MW occurred on 11/06/14. Operational Information Active
Nov 07 2014 06:32:37 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 15:22 11/03/2014 through 16:00 11/06/2014 due to a forced outage. Operational Information Cancelled
Nov 06 2014 08:59:28 CST Daily reconfiguration SASM for Thursday, November 06, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 06 2014 08:51:26 CST Updated at 11/06/2014 08:38 (CS) – The ERCOT EAST DC Tie in both directions will be limited to 0 MW as a result of an unplanned maintenance outage from 11/03/2014 15:22 (CS) to 11/07/2014 16:00 (CS). Operational Information Active
Nov 06 2014 07:38:45 CST No sudden loss of generation greater than 450 MW occurred on 11/05/14. Operational Information Active
Nov 06 2014 06:50:45 CST ERCOT has cancelled the following notice: Allen Switch Autotransformer #1 Series Reactor SPS is out of service. Operational Information Cancelled
Nov 05 2014 18:09:20 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:00 11/07/2014 through 16:00 11/14/2014 due to a planned outage. Operational Information Active
Nov 05 2014 17:44:34 CST Allen Switch Autotransformer #1 Series Reactor SPS is out of service. Operational Information Active
Nov 05 2014 11:45:48 CST ERCOT will execute a SASM in 30 minutes for 11/05/14 for HE14-HE24 for 8MW of RRS per hour. Operational Information Active
Nov 05 2014 08:55:07 CST Daily reconfiguration SASM for Wednesday, November 05, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 05 2014 07:23:25 CST No sudden loss of generation greater than 450 MW occurred on 11/04/14. Operational Information Active
Nov 04 2014 08:50:54 CST Daily reconfiguration SASM for Tuesday, November 04, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 04 2014 07:42:33 CST No sudden loss of generation greater than 450 MW occurred on 11/03/14. Operational Information Active
Nov 03 2014 18:15:51 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 15:22 11/03/2014 through 00:00 11/04/2014 due to a forced outage. Operational Information Cancelled
Nov 03 2014 18:15:23 CST DC Tie Outage: The East DC Tie will be unavailable from 15:22 11/03/2014 through 16:00 11/06/2014 due to a forced outage. Operational Information Active
Nov 03 2014 15:39:33 CST DC Tie Outage: The East DC Tie will be unavailable from 15:22 11/03/2014 through 00:00 11/04/2014 due to a forced outage. Operational Information Active
Nov 03 2014 08:50:38 CST Daily reconfiguration SASM for Monday, November 03, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 03 2014 07:42:57 CST No sudden loss of generation greater than 450 MW occurred on 11/02/14. Operational Information Active
Nov 02 2014 09:03:53 CST No sudden loss of generation greater than 450 MW occurred on 11/01/14. Operational Information Active
Nov 02 2014 08:46:39 CST Daily reconfiguration SASM for Sunday, November 2, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 01 2014 09:52:23 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 08:00 11/03/2014 through 18:00 11/30/2014 due to a planned outage. Operational Information Active
Nov 01 2014 09:12:23 CST No sudden loss of generation greater than 450 MW occurred on 10/31/14. Operational Information Active
Nov 01 2014 08:46:33 CST Daily reconfiguration SASM for Saturday, November 1, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 01 2014 08:46:18 CST Daily reconfiguration SASM for Saturday, November 1, 2014 will not be occurring due to zero participating QSEs. Operational Information Active
Nov 01 2014 01:37:19 CST ERCOT has cancelled the following notice: The North DC Tie has been released from it's Outage and is available for full capacity. Operational Information Cancelled
Nov 01 2014 01:35:33 CST The North DC Tie has been released from it's outage and is available for full capacity. Operational Information Active