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.)

    Jun 2018 Jul 2018 Aug 2018 Sep 2018 Oct 2018 Nov 2018
    Date Message Type Status
    Jul 31 2018 20:33:47 CST Transmission Watch for the Railroad DC tie due to tie limitations that will result in schedule curtailments. Operational Information Active
    Jul 31 2018 08:47:47 CST The Daily RSASM for Tuesday, July 31, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 31 2018 00:00:33 CST On 07/30/2018, a sudden loss of generation occurred at 14:01 totaling 827 MW. Frequency declined to 59.852 Hz, ERCOT load was 60, 950 MW Operational Information Active
    Jul 30 2018 16:33:45 CST ERCOT has cancelled the following notice: At 3:25 PM on 07/30/2018, 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
    Jul 30 2018 14:05:56 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jul 30 2018 14:01:24 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jul 30 2018 09:13:58 CST At 3:25 PM on 07/30/2018, 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
    Jul 30 2018 08:47:49 CST The Daily RSASM for Monday July 30, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 30 2018 00:23:50 CST No sudden loss of generation greater than 450 MW occurred on July 29, 2018. Operational Information Active
    Jul 29 2018 09:00:00 CST The Daily RSASM for Sunday July 29, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 29 2018 00:42:32 CST No sudden loss of generation greater than 450 MW occurred on July 28, 2018. Operational Information Active
    Jul 28 2018 18:29:04 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 28 2018 15:23:31 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 28 2018 09:05:23 CST The Daily RSASM for Saturday July 28, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 28 2018 00:21:30 CST No sudden loss of generation greater than 450 MW occurred on July 27, 2018. Operational Information Active
    Jul 27 2018 08:47:03 CST The Daily RSASM for Friday July 27, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 27 2018 00:55:12 CST No sudden loss of generation greater than 450 MW occurred on July 26, 2018. Operational Information Active
    Jul 26 2018 18:59:56 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Cancelled
    Jul 26 2018 09:06:07 CST Capacity Insufficiency: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Active
    Jul 26 2018 08:47:12 CST The Daily RSASM for Thursday July 26, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 26 2018 05:48:09 CST ERCOT will execute a SASM at 06:30 for operating day 07/26/2018 for 9.9 MW REGUP for HE09 and HE11-24. Total 148.5 MW and for 4.3 MW REGDN for HE09 and HE11-24. Total of 64.5 MW. Operational Information Active
    Jul 26 2018 00:05:25 CST No sudden loss of generation greater than 450 MW occurred on July 25, 2018. Operational Information Active
    Jul 25 2018 22:17:40 CST ERCOT will execute a SASM at 22:45 for operating day 07/26/2018 for HE 02-08 for REGUP 9.9 MWs and REGDN 4.3 MWs. Operational Information Active
    Jul 25 2018 20:18:18 CST ERCOT will execute a SASM at 20:45 for operating day 07/25/2018 for HE 23-24 for REGUP 9.9 MWs and REGDN 4.3 MWs. Operational Information Active
    Jul 25 2018 18:00:49 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 25 2018 15:22:44 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 25 2018 08:46:20 CST The Daily RSASM for Wednesday, July 25, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jul 25 2018 01:16:31 CST No sudden loss of generation greater than 450 MW occurred on July 24, 2018. Operational Information Active
    Jul 24 2018 14:30:28 CST ERCOT has cancelled the following notice: At 09:30, ERCOT is issuing an Advisory for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 20-24, 2018. Operational Information Cancelled
    Jul 24 2018 08:44:56 CST The Daily RSASM for Tuesday, July 24, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Jul 24 2018 00:15:39 CST No sudden loss of generation greater than 450 MW occurred on July 23, 2018. Operational Information Active
    Jul 24 2018 00:04:35 CST ERCOT has cancelled the following notice: At 21:08, ERCOT is issuing a Transmission Watch for the Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Jul 23 2018 21:14:21 CST At 21:08, ERCOT is issuing a Transmission Watch for the Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Jul 23 2018 08:46:00 CST The Daily RSASM for Monday, July 23, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 23 2018 07:59:10 CST ERCOT has cancelled the following notice: At 05:50, ERCOT is issuing a Transmission Watch for the South Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Jul 23 2018 05:51:17 CST At 05:50, ERCOT is issuing a Transmission Watch for the South Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Jul 23 2018 05:11:10 CST No sudden loss of generation greater than 450 MW occurred on July 22, 2018 Operational Information Active
    Jul 23 2018 03:06:23 CST ERCOT has cancelled the following notice: At 00:30, ERCOT is issuing a Transmission Watch for the South Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Cancelled
    Jul 23 2018 00:32:16 CST At 00:30, ERCOT is issuing a Transmission Watch for the South Railroad DC Tie. This may result in the curtailment of DC-Tie exports to CENACE. Operational Information Active
    Jul 22 2018 08:49:00 CST The Daily RSASM for Sunday July 22, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 22 2018 00:07:21 CST No sudden loss of generation greater than 450 MW occurred on July 21, 2018 Operational Information Active
    Jul 21 2018 18:21:29 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 09:00 07/21/2018 through 16:00 07/21/2018 due to a planned outage. Operational Information Cancelled
    Jul 21 2018 18:21:22 CST ERCOT has cancelled the following notice: Railroad DC Tie will be unavailable Saturday 7/21/2018 08:00-18:00 due to M2 Transmission outage. Operational Information Cancelled
    Jul 21 2018 08:47:52 CST The Daily RSASM for Saturday July 21, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 21 2018 00:48:57 CST No sudden loss of generation greater than 450 MW occurred on July 20, 2018 Operational Information Active
    Jul 20 2018 09:19:12 CST ERCOT has cancelled the following notice: At 19:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 18-25, 2018. Operational Information Cancelled
    Jul 20 2018 09:18:44 CST At 09:30, ERCOT is issuing an Advisory for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 20-24, 2018. Operational Information Active
    Jul 20 2018 08:47:10 CST The Daily RSASM for Friday July 20, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 20 2018 07:16:34 CST Railroad DC Tie will be unavailable Saturday 7/21/2018 08:00-18:00 due to M2 Transmission outage. Operational Information Active
    Jul 20 2018 01:49:57 CST No sudden loss of generation greater than 450 MW occurred on July 19, 2018 Operational Information Active
    Jul 19 2018 18:30:12 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 19 2018 17:31:44 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 09:00 07/21/2018 through 16:00 07/21/2018 due to a planned outage. Operational Information Active
    Jul 19 2018 17:17:44 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 15:52 07/19/2018 through 18:00 07/19/2018 due to a planned outage. Operational Information Cancelled
    Jul 19 2018 16:09:52 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 15:52 07/19/2018 through 18:00 07/19/2018 due to a planned outage. Operational Information Active
    Jul 19 2018 16:00:00 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 19 2018 08:50:41 CST The Daily RSASM for Thursday July 19, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 19 2018 00:06:32 CST On 7/18/2018 a sudden loss of generation occurred at 17:44 totaling 494.83 MW. Frequency declined to 59.891 Hz, ERCOT load was 72, 251 MW. Operational Information Active
    Jul 18 2018 18:29:53 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 18 2018 17:48:29 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jul 18 2018 17:45:05 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jul 18 2018 15:42:02 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 18 2018 08:47:06 CST The Daily RSASM for Wednesday, July 18, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 18 2018 00:25:46 CST No sudden loss of generation greater than 450 MW occurred on July 17, 2018 Operational Information Active
    Jul 17 2018 21:56:54 CST ERCOT has cancelled the following notice: At 18:55, ERCOT is issuing a Transmission Watch for the Eagle Pass Dc Tie due to schedule exceeding limits. This may result in the curtailment of DC-Tie exports to CENACE. Watch Cancelled
    Jul 17 2018 19:02:42 CST At 18:55, ERCOT is issuing a Transmission Watch for the Eagle Pass Dc Tie due to schedule exceeding limits. This may result in the curtailment of DC-Tie exports to CENACE. Watch Active
    Jul 17 2018 08:46:58 CST The Daily RSASM for Tuesday, July 17, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 17 2018 00:21:52 CST No sudden loss of generation greater than 450 MW occurred on July 16, 2018 Operational Information Active
    Jul 16 2018 08:51:04 CST The Daily RSASM for Monday, July 16, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 16 2018 00:19:41 CST No sudden loss of generation greater than 450 MW occurred on July 15, 2018 Operational Information Active
    Jul 15 2018 08:48:20 CST The Daily RSASM for Sunday, July 15, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 15 2018 00:12:19 CST No sudden loss of generation greater than 450 MW occurred on July 14, 2018 Operational Information Active
    Jul 14 2018 18:55:14 CST At 19:00, ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 103°F in the North Central and South Central weather zones. This notice is in effective July 18-25, 2018. Operational Information Active
    Jul 14 2018 08:46:42 CST The Daily RSASM for Saturday, July 14, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 14 2018 01:18:08 CST No sudden loss of generation greater than 450 MW occurred on July 13, 2018 Operational Information Active
    Jul 13 2018 08:47:54 CST The Daily RSASM for Friday, July 13, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 13 2018 00:19:48 CST No sudden loss of generation greater than 450 MW occurred on July 12, 2018 Operational Information Active
    Jul 12 2018 21:19:40 CST ERCOT has cancelled the following notice: The Railroad DC Tie has completed the de-rate and is now available at 290mw's as of 17:23 7/12/2018 Operational Information Cancelled
    Jul 12 2018 17:25:21 CST The Railroad DC Tie has completed the de-rate and is now available at 290mw's as of 17:23 7/12/2018 Operational Information Active
    Jul 12 2018 08:46:52 CST The Daily RSASM for Thursday, July 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 12 2018 00:34:48 CST No sudden loss of generation greater than 450 MW occurred on July 11, 2018 Operational Information Active
    Jul 11 2018 08:49:09 CST The Daily RSASM for Wednesday July 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 11 2018 01:23:15 CST No sudden loss of generation greater than 450 MW occurred on July 10, 2018 Operational Information Active
    Jul 10 2018 08:50:00 CST The Daily RSASM for Tuesday July 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 10 2018 05:36:35 CST No sudden loss of generation greater than 450 MW occurred on July 9, 2018 Operational Information Active
    Jul 09 2018 08:47:53 CST The Daily RSASM for Monday July 9, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 09 2018 00:26:37 CST No sudden loss of generation greater than 450 MW occurred on July 8, 2018 Operational Information Active
    Jul 08 2018 08:47:28 CST The Daily RSASM for Sunday, July 8, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 08 2018 02:09:08 CST No sudden loss of generation greater than 450 MW occurred on July 7, 2018 Operational Information Active
    Jul 07 2018 08:46:46 CST The Daily RSASM for Saturday, July 7, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 07 2018 01:31:13 CST On July 6, 2018 a sudden loss of generation occurred at 13:10 totaling 813 MW. Frequency declined to 59.888 Hz, ERCOT load was 59, 888 MW. Operational Information Active
    Jul 06 2018 13:15:00 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Jul 06 2018 13:11:04 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Jul 06 2018 08:46:48 CST The Daily RSASM for Friday, July 6, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 06 2018 00:04:18 CST No sudden loss of generation greater than 450 MW occurred on July 5, 2018 Operational Information Active
    Jul 05 2018 08:47:49 CST The Daily RSASM for Thursday, July 5, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 05 2018 01:02:43 CST No sudden loss of generation greater than 450 MW occurred on July 4, 2018. Operational Information Active
    Jul 04 2018 08:46:38 CST The Daily RSASM for Wednesday, July 4, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 04 2018 00:12:01 CST No sudden loss of generation greater than 450 MW occurred on July 3, 2018. Operational Information Active
    Jul 03 2018 08:48:44 CST The Daily RSASM for Tuesday, July 3, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 03 2018 02:12:33 CST No sudden loss of generation greater than 450 MW occurred on July 2, 2018. Operational Information Active
    Jul 02 2018 08:46:25 CST The Daily RSASM for Monday, July 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 02 2018 00:06:29 CST No sudden loss of generation greater than 450 MW occurred on July 1, 2018. Operational Information Active
    Jul 01 2018 08:46:54 CST The Daily RSASM for Sunday, July 01, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 01 2018 00:01:35 CST No sudden loss of generation greater than 450 MW occurred on June 30, 2018. Operational Information Active