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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 2015 Jan 2016 Feb 2016 Mar 2016 Apr 2016 May 2016
Date Message Type Status
May 30 2016 08:47:48 CST Daily RSASM for Monday, May 30, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 30 2016 00:18:33 CST No sudden loss of generation greater than 450 MW occurred on 05/29/2016. Operational Information Active
May 29 2016 08:52:23 CST Daily RSASM for Sunday, May 29, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 29 2016 00:03:28 CST No sudden loss of generation greater than 450 MW occurred on 05/28/2016. Operational Information Active
May 28 2016 08:50:21 CST Daily RSASM for Saturday, May 28, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 28 2016 00:33:27 CST No sudden loss of generation greater than 450 MW occurred on 05/27/2016. Operational Information Active
May 27 2016 14:57:05 CST ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for the Rio Grande Valley due to the Valley Import. Operational Information Cancelled
May 27 2016 14:39:43 CST Transmission Emergency Notice has been issued for the Rio Grande Valley due to the Valley Import. Operational Information Active
May 27 2016 08:50:12 CST Daily RSASM for Friday, May 27, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 27 2016 00:06:23 CST On 05/26/2016 at 02:39, a sudden loss of generation occurred totaling 454 Mw. Frequency declined to 59.871 Hz, ERCOT load was 36, 316 Mw. Operational Information Active
May 26 2016 11:27:39 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 11:00 05/26/2016 through 17:00 05/26/2016 due to a forced outage. Operational Information Cancelled
May 26 2016 10:46:49 CST DC Tie Outage: The North DC Tie will be unavailable from 11:00 05/26/2016 through 17:00 05/26/2016 due to a forced outage. Operational Information Active
May 26 2016 08:52:58 CST Daily RSASM for Thursday, May 26, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 26 2016 00:03:47 CST No sudden loss of generation greater than 450 MW occurred on 05/25/2016. Operational Information Active
May 25 2016 08:47:10 CST Daily RSASM for Wednesday, May 25 will not be occurring due to zero participating QSEs. Operational Information Active
May 25 2016 00:19:22 CST No sudden loss of generation greater than 450 MW occurred on 05/24/2016. Operational Information Active
May 24 2016 08:48:40 CST Daily RSASM for Tuesday, May 24, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 24 2016 07:33:55 CST Eskota Switch SPS had been taken out of service. Operational Information Active
May 24 2016 00:04:08 CST No sudden loss of generation greater than 450 MW occurred on 05/23/2016. Operational Information Active
May 23 2016 09:27:18 CST ERCOT has cancelled the following notice: The Eskota Switch SPS has been taken out of service. Operational Information Cancelled
May 23 2016 08:47:07 CST Daily RSASM for Monday, May 23, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 23 2016 07:23:21 CST The Eskota Switch SPS has been taken out of service. Operational Information Active
May 23 2016 00:02:43 CST No sudden loss of generation greater than 450 MW occurred on 05/22/2016. Operational Information Active
May 22 2016 08:56:37 CST Daily RSASM for Sunday, May 22, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 22 2016 00:03:36 CST On 05/21/2016 at 08:19, a sudden loss of generation occurred totaling 559 Mw. Frequency declined to 59.879 Hz, ERCOT load was 32, 837 Mw. Operational Information Active
May 21 2016 08:50:23 CST Daily RSASM for Saturday, May 21, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 21 2016 00:14:34 CST No sudden loss of generation greater than 450 MW occurred on 05/20/2016. Operational Information Active
May 20 2016 23:01:09 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Operational Information Cancelled
May 20 2016 21:49:50 CST Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Operational Information Active
May 20 2016 08:47:36 CST Daily RSASM for Friday, May 20, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 20 2016 00:25:36 CST No sudden loss of generation greater than 450 MW occurred on 05/19/2016. Operational Information Active
May 19 2016 08:47:02 CST Daily RSASM for Thursday, May 19, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 19 2016 00:09:00 CST No sudden loss of generation greater than 450 MW occurred on 05/18/2016. Operational Information Active
May 18 2016 09:02:09 CST Daily RSASM for Wednesday, May 18, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 18 2016 00:47:19 CST No sudden loss of generation greater than 450 MW occurred on 05/17/2016. Operational Information Active
May 17 2016 08:50:22 CST Daily RSASM for Tuesday, May 17, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 17 2016 00:51:01 CST No sudden loss of generation greater than 450 MW occurred on 05/16/2016. Operational Information Active
May 16 2016 08:50:22 CST Daily RSASM for Monday, May 16, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 16 2016 00:23:18 CST No sudden loss of generation greater than 450 MW occurred on 05/15/2016. Operational Information Active
May 16 2016 00:12:54 CST ERCOT will execute a SASM at 00:45 for operating day Monday, 5/15/16 at HE 03-04 for 31.2 MW RRS and 32.2 MW RRS for HE05. Operational Information Active
May 15 2016 08:46:31 CST The Daily RSASM for Sunday, May 15, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 15 2016 00:31:17 CST No sudden loss of generation greater than 450 MW occurred on 05/14/2016. Operational Information Active
May 14 2016 08:54:44 CST Daily RSASM for Saturday, May 14, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 14 2016 00:50:36 CST No sudden loss of generation greater than 450 MW occurred on 05/13/2016. Operational Information Active
May 13 2016 08:47:50 CST The Daily RSASM for Friday, May 13, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 13 2016 04:43:18 CST ERCOT has cancelled the following notice: ERCOT is working from alternate control center. Operational Information Cancelled
May 13 2016 04:42:42 CST ERCOT is working from primary control center. Operational Information Active
May 13 2016 00:53:57 CST On 05/12/2016, a sudden loss of generation occurred at 14:31 totaling 589 MW. Frequency declined to 59.897 Hz, ERCOT load was 47, 696 MW. Operational Information Active
May 12 2016 16:28:40 CST ERCOT is working from alternate control center. Operational Information Active
May 12 2016 14:39:45 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT's Voltage Security Assessment Tool is currently unavailable. Operational Information Cancelled
May 12 2016 14:09:56 CST Advisory issued due to ERCOT's Voltage Security Assessment Tool is currently unavailable. Operational Information Active
May 12 2016 08:48:16 CST The Daily RSASM for Thursday, May 12, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 12 2016 00:10:31 CST No sudden loss of generation greater than 450 MW occurred on 05/11/2016. Operational Information Active
May 11 2016 08:47:09 CST The Daily RSASM for Wednesday, May 11, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 11 2016 00:09:28 CST No sudden loss of generation greater than 450 MW occurred on 05/10/2016. Operational Information Active
May 10 2016 08:48:39 CST The Daily RSASM for Tuesday, May 10, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 10 2016 01:19:54 CST No sudden loss of generation greater than 450 MW occurred on 05/09/2016. Operational Information Active
May 09 2016 08:46:50 CST The Daily RSASM for Monday, May 09, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 09 2016 00:03:10 CST No sudden loss of generation greater than 450 MW occurred on 05/08/2016. Operational Information Active
May 08 2016 23:13:56 CST ERCOT has cancelled the following notice: ERCOT issued Advisory for a GMD alert of K7 (G3) until 23:00 unless extended on 5/08/2016. Operational Information Cancelled
May 08 2016 23:13:50 CST ERCOT has cancelled the following notice: At 18:55 The Space Weather Prediction Center has issued a GMD warning of K7 (G3) until 23:00 on 5/08/2016. Operational Information Cancelled
May 08 2016 22:29:59 CST ERCOT issued Advisory for a GMD alert of K7 (G3) until 23:00 unless extended on 5/08/2016. Operational Information Active
May 08 2016 19:11:42 CST At 18:55 The Space Weather Prediction Center has issued a GMD warning of K7 (G3) until 23:00 on 5/08/2016. Operational Information Active
May 08 2016 09:38:11 CST ERCOT has cancelled the following notice: ERCOT issued an advisory for a GMD alert of K7 (G3) starting at 0059 until 0400 (0900utc) on 5/08/2016. Operational Information Cancelled
May 08 2016 08:48:36 CST The Daily RSASM for Sunday, May 8, 2016 did not occur due to zero participating QSEs. Operational Information Active
May 08 2016 04:02:40 CST ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 (G3) until 0400 (0900utc) on 5/08/2016. Operational Information Cancelled
May 08 2016 01:52:58 CST ERCOT issued an advisory for a GMD alert of K7 (G3) starting at 0059 until 0400 (0900utc) on 5/08/2016. Operational Information Active
May 08 2016 01:51:52 CST ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD alert of K7 (G3) until 0400 (0900utc) on 5/08/2016. Operational Information Cancelled
May 08 2016 01:15:16 CST The Space Weather Prediction Center has issued a GMD alert of K7 (G3) until 0400 (0900utc) on 5/08/2016. Operational Information Active
May 08 2016 01:14:55 CST ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD alert of K7 (G3) until 0400 (0900utc) on 4/08/2016. Operational Information Cancelled
May 08 2016 01:14:34 CST ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 (G3) until 0400 (0900utc) on 4/08/2016. Operational Information Cancelled
May 08 2016 01:13:55 CST The Space Weather Prediction Center has issued a GMD Warning of K7 (G3) until 0400 (0900utc) on 5/08/2016. Operational Information Active
May 08 2016 01:06:56 CST The Space Weather Prediction Center has issued a GMD alert of K7 (G3) until 0400 (0900utc) on 4/08/2016. Operational Information Active
May 08 2016 00:59:38 CST The Space Weather Prediction Center has issued a GMD Warning of K7 (G3) until 0400 (0900utc) on 4/08/2016. Operational Information Active
May 08 2016 00:36:48 CST No sudden loss of generation greater than 450 MW occurred on 05/07/2016. Operational Information Active
May 07 2016 08:50:38 CST The Daily RSASM for Saturday, May 7, 2016 did not occur due to zero participating QSEs. Operational Information Active
May 07 2016 00:16:01 CST No sudden loss of generation greater than 450 MW occurred on 05/06/2016. Operational Information Active
May 06 2016 08:48:07 CST The Daily RSASM for Friday, May 6, 2016 did not occur due to zero participating QSEs. Operational Information Active
May 06 2016 00:04:31 CST On May 5, 2016 a sudden loss of generation occurred at 12:31 totaling 621 MW. Frequency declined to 59.869 Hz, ERCOT load was 40, 266 MW. Operational Information Active
May 05 2016 08:48:24 CST The Daily RSASM for Thursday, May 5, 2016 did not occur due to zero participating QSEs. Operational Information Active
May 05 2016 00:04:39 CST No sudden loss of generation greater than 450 MW occurred on 05/04/2016. Operational Information Active
May 04 2016 09:04:40 CST The Daily RSASM for Wednesday, May 4, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 04 2016 08:12:49 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 10:40 05/02/2016 through 17:00 05/04/2016 due to a forced outage. Operational Information Cancelled
May 04 2016 02:02:37 CST No sudden loss of generation greater than 450 MW occurred on 05/03/2016. Operational Information Active
May 03 2016 08:56:59 CST The Daily RSASM for Tuesday, May 3, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 03 2016 00:05:21 CST No sudden loss of generation greater than 450 MW occurred on 05/02/2016. Operational Information Active
May 02 2016 16:57:23 CST ERCOT has cancelled the following notice: The Barney Davis SPS has been taken out of service for a planned outage. Operational Information Cancelled
May 02 2016 16:52:37 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 10:40 05/02/2016 through 00:00 05/03/2016 due to a forced outage. Operational Information Cancelled
May 02 2016 16:52:19 CST DC Tie Outage: The East DC Tie will be unavailable from 10:40 05/02/2016 through 17:00 05/04/2016 due to a forced outage. Operational Information Active
May 02 2016 11:05:10 CST DC Tie Outage: The East DC Tie will be unavailable from 10:40 05/02/2016 through 00:00 05/03/2016 due to a forced outage. Operational Information Active
May 02 2016 08:46:58 CST The Daily RSASM for Monday, May 2, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 02 2016 08:36:15 CST The Barney Davis SPS has been taken out of service for a planned outage. Operational Information Active
May 02 2016 03:07:41 CST On May 1, 2016 a sudden loss of generation occurred at 12:32 totaling 554 MW. Frequency declined to 59.882 Hz, ERCOT load was 38, 213 MW. Another sudden loss of generation occurred at 20:20 totaling 1311 MW. Frequency declined to 59.708 Hz, ERCOT load was 40, 722 MW. Operational Information Active
May 01 2016 08:47:44 CST Daily RSASM for Sunday, May 01, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
May 01 2016 03:23:44 CST No sudden loss of generation greater than 450 MW occurred on 04/30/2016 Operational Information Active
May 01 2016 03:23:24 CST No sudden loss of generation greater than 450 MW occurred on 04/29/2016 Operational Information Active