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.)

    Nov 2016 Dec 2016 Jan 2017 Feb 2017 Mar 2017 Apr 2017
    Date Message Type Status
    Apr 28 2017 08:48:23 CST The Daily RSASM for Friday, April 28, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 28 2017 00:07:00 CST No sudden loss of generation greater than 450 MW occurred on 4/27/2017. Operational Information Active
    Apr 27 2017 12:31:04 CST ERCOT has cancelled the following notice: The DC_S/Eagle Pass DC Tie (DC_EGPS) DC Tie will be unavailable from 07:30 04/27/2017 through 14:00 04/27/2017 due to a planned outage. Operational Information Cancelled
    Apr 27 2017 08:48:27 CST The Daily RSASM for Thursday, April 27, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 27 2017 07:22:23 CST ERCOT has cancelled the following notice: The Wirtz RAS has been removed from RTCA Operational Information Cancelled
    Apr 27 2017 00:01:35 CST No sudden loss of generation greater than 450 MW occurred on 4/26/2017. Operational Information Active
    Apr 26 2017 20:21:28 CST ERCOT has cancelled the following notice: The DC_R is derated to 150mws for HE 2000 4/25/2017 Operational Information Cancelled
    Apr 26 2017 18:29:33 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Apr 26 2017 15:43:29 CST ERCOT Emergency Base Points are Disabled Operational Information Cancelled
    Apr 26 2017 15:42:25 CST ERCOT Emergency Base Points are Enabled Operational Information Active
    Apr 26 2017 09:49:52 CST At 1525 on 4/26/2017, ERCOT will perform site failover of its Energy and 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 the start of the failover. Operational Information Active
    Apr 26 2017 08:50:07 CST The Daily RSASM for Wednesday, April 26, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 26 2017 08:46:08 CST The Wirtz RAS has been removed from RTCA Operational Information Active
    Apr 26 2017 00:03:12 CST No sudden loss of generation greater than 450 MW occurred on 4/25/2017. Operational Information Active
    Apr 25 2017 19:17:33 CST ERCOT has cancelled the following notice: ERCOT has been notified that the DC_R/Railroad DC Tie will be derated to 150 MW Import/Export due to cooling maintenance on Tuesday, April 25th, 2017 from 09:00 - 19:00. Operational Information Cancelled
    Apr 25 2017 19:16:26 CST ERCOT has cancelled the following notice: The DC_R/Railroad DC Tie will be unavailable from 09:00 04/26/2017 through 13:00 04/26/2017 due to a planned outage. Operational Information Cancelled
    Apr 25 2017 19:15:37 CST The DC_R is derated to 150mws for HE 2000 4/25/2017 Operational Information Active
    Apr 25 2017 13:54:01 CST DC Tie Outage: The DC_R/Railroad DC Tie will be unavailable from 09:00 04/26/2017 through 13:00 04/26/2017 due to a planned outage. Operational Information Active
    Apr 25 2017 08:47:26 CST The Daily RSASM for Tuesday, April 25, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 25 2017 00:02:01 CST No sudden loss of generation greater than 450 MW occurred on 4/24/2017. Operational Information Active
    Apr 24 2017 08:49:28 CST The Daily RSASM for Monday, April 24, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 24 2017 00:04:31 CST No sudden loss of generation greater than 450 MW occurred on 4/23/2017. Operational Information Active
    Apr 23 2017 10:55:40 CST DC Tie Outage: The DC_S/Eagle Pass DC Tie (DC_EGPS) DC Tie will be unavailable from 07:30 04/27/2017 through 14:00 04/27/2017 due to a planned outage. Operational Information Active
    Apr 23 2017 08:51:40 CST The Daily RSASM for Sunday, April 23, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 23 2017 07:06:06 CST ERCOT will execute a SASM at 07:40 for operating day SUNDAY, APRIL 23 for 28.4 MW RRS for HE10-12. Operational Information Active
    Apr 23 2017 00:10:59 CST No sudden loss of generation greater than 450 MW occurred on 4/22/2017. Operational Information Active
    Apr 22 2017 15:53:33 CST ERCOT has cancelled the following notice: The DC_N / Oklaunion DC Tie will be unavailable from 13:00 04/22/2017 through 23:59 04/22/2017 due to a forced outage. Operational Information Cancelled
    Apr 22 2017 13:22:23 CST DC Tie Outage: The DC_N / Oklaunion DC Tie will be unavailable from 13:00 04/22/2017 through 23:59 04/22/2017 due to a forced outage. Operational Information Active
    Apr 22 2017 08:49:36 CST The Daily RSASM for Saturday, April 22, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 22 2017 07:44:39 CST ERCOT has cancelled the following notice: The DC_N / Oklaunion DC Tie will be unavailable from 16:00 04/21/2017 through 20:00 04/21/2017 due to a forced outage. Operational Information Cancelled
    Apr 22 2017 07:44:32 CST ERCOT has cancelled the following notice: The DC_N / Oklaunion DC Tie will be unavailable from 20:00 04/21/2017 through 17:00 04/22/2017 due to a Planned Outage Unavoidable Extension. Operational Information Cancelled
    Apr 22 2017 00:07:03 CST No sudden loss of generation greater than 450 MW occurred on 4/21/2017. Operational Information Active
    Apr 21 2017 17:39:00 CST The DC_N / Oklaunion DC Tie will be unavailable from 20:00 04/21/2017 through 17:00 04/22/2017 due to a Planned Outage Unavoidable Extension. Operational Information Active
    Apr 21 2017 15:51:43 CST DC Tie Outage: The DC_N / Oklaunion DC Tie will be unavailable from 16:00 04/21/2017 through 20:00 04/21/2017 due to a forced outage. Operational Information Active
    Apr 21 2017 14:15:11 CST ERCOT has been notified that the DC_R/Railroad DC Tie will be derated to 150 MW Import/Export due to cooling maintenance on Thursday, April 27th, 2017 from 08:00 - 20:00. Operational Information Active
    Apr 21 2017 14:14:36 CST ERCOT has been notified that the DC_R/Railroad DC Tie will be derated to 150 MW Import/Export due to cooling maintenance on Wednesday, April 26th, 2017 from 14:00 - 20:00. Operational Information Active
    Apr 21 2017 14:13:11 CST ERCOT has been notified that the DC_R/Railroad DC Tie will be derated to 150 MW Import/Export due to cooling maintenance on Tuesday, April 25th, 2017 from 09:00 - 19:00. Operational Information Active
    Apr 21 2017 08:46:31 CST The Daily RSASM for Friday, April 21, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 21 2017 00:50:43 CST No sudden loss of generation greater than 450 MW occurred on 4/20/2017. Operational Information Active
    Apr 20 2017 17:09:03 CST ERCOT has cancelled the following notice: The DC_N / Oklaunion DC Tie will be unavailable from 07:00 04/20/2017 through 16:00 04/20/2017 due to a planned outage. Operational Information Cancelled
    Apr 20 2017 08:49:15 CST The Daily RSASM for Thursday, April 20, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 20 2017 08:03:56 CST DC Tie Outage: The DC_N / Oklaunion DC Tie will be unavailable from 07:00 04/20/2017 through 16:00 04/20/2017 due to a planned outage. Operational Information Active
    Apr 20 2017 00:34:52 CST No sudden loss of generation greater than 450 MW occurred on 4/19/2017. Operational Information Active
    Apr 19 2017 08:48:03 CST The Daily RSASM for Wednesday, April 19, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 19 2017 00:19:47 CST No sudden loss of generation greater than 450 MW occurred on 4/18/2017. Operational Information Active
    Apr 18 2017 08:48:40 CST The Daily RSASM for Tuesday, April 18, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 18 2017 00:49:17 CST No sudden loss of generation greater than 450 MW occurred on 4/17/2017. Operational Information Active
    Apr 17 2017 13:14:01 CST DC_EGPS (Eagle Pass) planned outage has been extended to Thursday 04/27/17 at 14:00 To Relocate Structures Operational Information Active
    Apr 17 2017 08:59:28 CST The Daily RSASM for Monday, April 17, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 17 2017 00:02:09 CST No sudden loss of generation greater than 450 MW occurred on 4/16/2017. Operational Information Active
    Apr 16 2017 10:38:04 CST There will be a planned outage on the DC_EGPS starting on Monday 04/17/17 at 07:00 until Wednesday 04/26/17 at 18:00 To Relocate Structures Operational Information Active
    Apr 16 2017 08:49:20 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Apr 16 2017 08:46:29 CST The Daily RSASM for Sunday, April 16, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 16 2017 00:43:09 CST No sudden loss of generation greater than 450 MW occurred on 4/15/2017. Operational Information Active
    Apr 15 2017 22:57:16 CST DC Tie Outage: The DC_S DC Tie will be unavailable from 22:41 04/15/2017 through 23:59 04/17/2017 due to a forced outage. Operational Information Active
    Apr 15 2017 08:47:35 CST The Daily RSASM for Saturday, April 15, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 15 2017 03:22:06 CST No sudden loss of generation greater than 450 MW occurred on 4/14/2017. Operational Information Active
    Apr 14 2017 08:59:30 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Apr 14 2017 08:57:30 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Apr 14 2017 08:47:01 CST The Daily RSASM for Friday, April 14, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 14 2017 07:41:12 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions on the North/Houston GTC to pre-posture for the M1 outage on Singleton to Zenith double circuit 345 kv line. Operational Information Cancelled
    Apr 14 2017 06:19:13 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions on the North/Houston GTC for M1 outage on the Singleton/Zenith double circuit 345 kv lines. Operational Information Cancelled
    Apr 14 2017 06:18:57 CST ERCOT is taking manual actions on the North/Houston GTC to pre-posture for the M1 outage on Singleton to Zenith double circuit 345 kv line. Operational Information Active
    Apr 14 2017 06:16:29 CST ERCOT is taking manual actions on the North/Houston GTC for M1 outage on the Singleton/Zenith double circuit 345 kv lines. Operational Information Active
    Apr 14 2017 04:30:39 CST ERCOT has cancelled the following notice: ERCOT is working from alternate control center. Operational Information Cancelled
    Apr 14 2017 00:06:16 CST On 4/13/17 , a sudden loss of generation occurred at 9:14 totaling 577 MW. Frequency declined to 59.858 Hz, ERCOT load was 35, 721 MW. Operational Information Active
    Apr 13 2017 16:29:31 CST ERCOT is working from alternate control center. Operational Information Active
    Apr 13 2017 10:11:22 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Apr 13 2017 09:20:23 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Apr 13 2017 09:18:04 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Apr 13 2017 08:49:07 CST The Daily RSASM for Thursday, April 13, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 13 2017 00:23:38 CST No sudden loss of generation greater than 450 MW occurred on 4/12/2017. Operational Information Active
    Apr 12 2017 14:45:26 CST ERCOT has cancelled the following notice: Eskota SPS 39 has been taken out of service. Operational Information Cancelled
    Apr 12 2017 09:30:02 CST Eskota SPS 39 has been taken out of service. Operational Information Active
    Apr 12 2017 08:52:48 CST The Daily RSASM for Wednesday, April 12, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 12 2017 00:05:31 CST No sudden loss of generation greater than 450 MW occurred on 4/11/2017. Operational Information Active
    Apr 11 2017 15:25:53 CST There will be a planned outage on the North Hvdc (DCTM) starting on Monday 04/17/17 at 07:30 until Friday 04/21/17 at 16:00 for annual HVDC maintenance. Operational Information Active
    Apr 11 2017 08:47:31 CST The Daily RSASM for Tuesday, April 11, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 11 2017 00:04:36 CST No sudden loss of generation greater than 450 MW occurred on 4/10/2017. Operational Information Active
    Apr 10 2017 08:46:52 CST The Daily RSASM for Monday, April 10, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 10 2017 03:28:16 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Apr 10 2017 03:26:00 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Apr 10 2017 00:17:58 CST No sudden loss of generation greater than 450 MW occurred on 4/09/2017. Operational Information Active
    Apr 09 2017 08:47:27 CST The Daily RSASM for Sunday, April 9, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 09 2017 00:02:26 CST No sudden loss of generation greater than 450 MW occurred on 4/08/2017 Operational Information Active
    Apr 08 2017 08:53:52 CST The Daily RSASM for Saturday April 8, 2017 did not occur due to zero participating QSEs. Operational Information Active
    Apr 08 2017 00:08:19 CST No sudden loss of generation greater than 450 MW occurred on 4/07/2017. Operational Information Active
    Apr 07 2017 08:53:48 CST The Daily RSASM for Friday April 7, 2017 did not occur due to zero participating QSEs. Operational Information Active
    Apr 07 2017 00:42:02 CST No sudden loss of generation greater than 450 MW occurred on 4/06/2017 Operational Information Active
    Apr 06 2017 08:48:07 CST The Daily RSASM for Thursday April 6, 2017 did not occur due to zero participating QSEs. Operational Information Active
    Apr 06 2017 00:49:28 CST No sudden loss of generation greater than 450 MW occurred on 4/05/2017. Operational Information Active
    Apr 05 2017 08:56:04 CST The Daily RSASM for Wednesday, April 5, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 05 2017 03:17:39 CST No sudden loss of generation greater than 450 MW occurred on 4/04/2017. Operational Information Active
    Apr 04 2017 09:58:52 CST ERCOT has cancelled the following notice: The Monticello B RAS has been taken out of service. Operational Information Cancelled
    Apr 04 2017 08:56:37 CST The Monticello B RAS has been taken out of service. Operational Information Active
    Apr 04 2017 08:48:08 CST The Daily RSASM for Tuesday, April 4, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 04 2017 00:28:47 CST No sudden loss of generation greater than 450 MW occurred on 4/03/2017. Operational Information Active
    Apr 03 2017 15:08:12 CST The South (Eagle Pass) DC Tie is available for full capacity. Operational Information Active
    Apr 03 2017 15:06:12 CST ERCOT has cancelled the following notice: The Eagle Pass DC Tie will be unavailable from 12:41 03/31/2017 through 19:00 04/03/2017 due to a forced outage. Operational Information Cancelled
    Apr 03 2017 08:48:50 CST The Daily RSASM for Monday, April 3, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 03 2017 05:50:06 CST No sudden loss of generation greater than 450 MW occurred on 4/02/2017 Operational Information Active
    Apr 03 2017 05:49:40 CST No sudden loss of generation greater than 450 MW occurred on 4/01/2017 Operational Information Active
    Apr 02 2017 08:50:55 CST The Daily RSASM for Sunday, April 2, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 01 2017 10:52:29 CST ERCOT has cancelled the following notice: ERCOT will execute a SASM at 07:25 for operating day 04/01/17 for HE 11-12 as follows: HE11: REGDN-37.9MW RRS: 51MW HE12: REGDN 38.9MW RRS: 52MW Operational Information Cancelled
    Apr 01 2017 09:12:20 CST The Daily RSASM for Saturday, April 1, 2017 will not be occurring due to zero participating QSEs. Operational Information Active
    Apr 01 2017 06:55:12 CST ERCOT will execute a SASM at 07:25 for operating day 04/01/17 for HE 11-12 as follows: HE11: REGDN-37.9MW RRS: 51MW HE12: REGDN 38.9MW RRS: 52MW Operational Information Active
    Apr 01 2017 03:32:23 CST No sudden loss of generation greater than 450 MW occurred on 3/31/2017 Operational Information Active