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.)

Dec 2014 Jan 2015 Feb 2015 Mar 2015 Apr 2015 May 2015
Date Message Type Status
May 24 2015 08:47:16 CST Daily Reconfiguration SASM for Sunday, May 24, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 24 2015 01:38:26 CST No sudden loss of generation greater than 450 MW occurred on 05/23/2015. Operational Information Active
May 23 2015 19:19:17 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 18:02 05/23/2015 through 23:59 05/23/2015 due to a forced outage. Operational Information Cancelled
May 23 2015 18:13:47 CST DC Tie Outage: The East DC Tie will be unavailable from 18:02 05/23/2015 through 23:59 05/23/2015 due to a forced outage. Operational Information Active
May 23 2015 08:47:21 CST Daily Reconfiguration SASM for Saturday, May 23, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 23 2015 00:08:46 CST No sudden loss of generation greater than 450 MW occurred on 05/22/2015. Operational Information Active
May 22 2015 08:50:12 CST Daily Reconfiguration SASM for Friday, May 22, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 22 2015 03:04:45 CST No sudden loss of generation greater than 450 MW occurred on 05/21/2015. Operational Information Active
May 21 2015 18:01:11 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 17:30 05/20/2015 through 18:00 05/21/2015 due to a planned outage. Operational Information Cancelled
May 21 2015 16:54:57 CST ERCOT has cancelled the following notice: The DC_E DC Tie will be unavailable from 07:30 05/20/2015 through 17:00 05/21/2015 due to a planned outage. Operational Information Cancelled
May 21 2015 16:54:42 CST DC Tie Outage: The East DC Tie will be unavailable from 17:30 05/20/2015 through 18:00 05/21/2015 due to a planned outage. Operational Information Active
May 21 2015 15:44:48 CST DC Tie Outage: The DC_E DC Tie will be unavailable from 07:30 05/20/2015 through 17:00 05/21/2015 due to a planned outage. Operational Information Active
May 21 2015 15:42:51 CST ERCOT has cancelled the following notice: The DC_E DC Tie will be unavailable from 07:30 05/20/2015 through 16:00 05/21/2015 due to a planned outage. Operational Information Cancelled
May 21 2015 15:26:18 CST DC Tie Outage: The North DC Tie will be unavailable from 09:01 05/27/2015 through 15:01 05/27/2015 due to a planned outage. Operational Information Active
May 21 2015 08:48:58 CST Daily Reconfiguration SASM for Thursday, May 21, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 21 2015 03:03:37 CST No sudden loss of generation greater than 450 MW occurred on 05/20/2015. Operational Information Active
May 20 2015 08:54:06 CST Daily reconfiguration SASM for Wednesday, May 20, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 20 2015 06:09:41 CST No sudden loss of generation greater than 450 MW occurred on 05/19/2015. Operational Information Active
May 19 2015 08:49:20 CST Daily reconfiguration SASM for Tuesday, May 19, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 19 2015 01:35:31 CST No sudden loss of generation greater than 450 MW occurred on 05/18/2015. Operational Information Active
May 18 2015 08:47:40 CST Daily reconfiguration SASM for Monday, May 18, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 18 2015 00:02:02 CST No sudden loss of generation greater than 450 MW occurred on 05/17/2015. Operational Information Active
May 17 2015 08:50:14 CST Daily reconfiguration SASM for Sunday, May 17, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 17 2015 00:03:10 CST No sudden loss of generation greater than 450 MW occurred on 05/16/2015. Operational Information Active
May 16 2015 16:15:10 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 17:00 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 14:36:24 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 15:00 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 14:36:15 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 17:00 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 14:12:55 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 14:15 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 14:12:46 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 15:00 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 13:55:18 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 14:15 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 13:38:41 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 14:00 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 13:20:08 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:30 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 13:20:00 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 14:00 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 13:09:06 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:15 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 13:08:54 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:30 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 12:54:17 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:00 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 12:54:00 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:15 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 11:54:19 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 12:00 05/16/2015 due to a forced outage. Operational Information Cancelled
May 16 2015 11:54:02 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 13:00 05/16/2015 due to a forced outage. Operational Information Active
May 16 2015 08:50:08 CST Daily reconfiguration SASM for Saturday, May 16, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 16 2015 00:51:50 CST No sudden loss of generation greater than 450 MW occurred on 05/15/2015. Operational Information Active
May 15 2015 15:55:12 CST ERCOT has cancelled the following notice: The Eskota SPS has been disabled. Operational Information Cancelled
May 15 2015 15:07:41 CST DC Tie Outage: The DC_E DC Tie will be unavailable from 07:30 05/20/2015 through 16:00 05/21/2015 due to a planned outage. Operational Information Active
May 15 2015 14:28:37 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 16:43 05/08/2015 through 16:00 05/15/2015 due to a forced outage. Operational Information Cancelled
May 15 2015 14:28:17 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 12:00 05/16/2015 due to a forced outage. Operational Information Active
May 15 2015 08:50:09 CST Daily reconfiguration SASM for Friday, May 15, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 15 2015 06:53:11 CST On 5/14/2015, a sudden loss of generation occurred at 12:28 totaling 554MW. Frequency declined to 59.868Hz. ERCOT load at 42914mw. Operational Information Active
May 15 2015 06:45:26 CST ERCOT has cancelled the following notice: No sudden loss of generation greater than 450 MW occurred on 05/14/2015. Operational Information Cancelled
May 15 2015 00:13:11 CST No sudden loss of generation greater than 450 MW occurred on 05/14/2015. Operational Information Active
May 14 2015 08:50:08 CST Daily reconfiguration SASM for Thursday, May 14, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 14 2015 00:01:24 CST No sudden loss of generation greater than 450 MW occurred on 05/13/2015. Operational Information Active
May 13 2015 16:15:58 CST ERCOT has cancelled the following notice: Allen Switch #15 SPS has been de-activated. Operational Information Cancelled
May 13 2015 08:47:27 CST Daily Reconfiguration SASM for Wednesday, May 13, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 13 2015 00:07:14 CST No sudden loss of generation greater than 450 MW occurred on 05/12/2015. Operational Information Active
May 12 2015 14:59:02 CST ERCOT has cancelled the following notice: An OCN has been issued due to ERCOT developing a new Generic Transmission Constraint due to a local voltage stability issue on the loss of Tesla to Gray 345kV single circuit due to Transmission Outages in the area. Operational Information Cancelled
May 12 2015 09:26:32 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 07:30 05/13/2015 through 16:00 05/14/2015 due to a planned outage. Operational Information Cancelled
May 12 2015 08:48:28 CST Daily Reconfiguration SASM for Tuesday, May 12, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 12 2015 04:42:09 CST No sudden loss of generation greater than 450 MW occurred on 05/11/2015. Operational Information Active
May 11 2015 17:15:18 CST The Eskota SPS has been disabled. Operational Information Active
May 11 2015 16:55:31 CST DC Tie Outage: The East DC Tie will be unavailable from 07:30 05/13/2015 through 16:00 05/14/2015 due to a planned outage. Operational Information Active
May 11 2015 16:53:55 CST ERCOT has cancelled the following notice: SWE1342/Group HVDC is a continuous outage on the Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit (DC_E1) starting on Wednesday 05/13/15 at 07:30 until Thursday 05/14/15 at 16:00 to complete testing of transformer and transfer switch. Estimated emergency restoration time is 12 hours. Operational Information Cancelled
May 11 2015 13:39:57 CST SWE1342/Group HVDC is a continuous outage on the Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit (DC_E1) starting on Wednesday 05/13/15 at 07:30 until Thursday 05/14/15 at 16:00 to complete testing of transformer and transfer switch. Estimated emergency restoration time is 12 hours. Operational Information Active
May 11 2015 09:21:33 CST Allen Switch #15 SPS has been de-activated. Operational Information Active
May 11 2015 08:46:25 CST Daily Reconfiguration SASM for Monday, May 11, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 11 2015 00:10:51 CST No sudden loss of generation greater than 450 MW occurred on 05/10/2015. Operational Information Active
May 10 2015 08:50:17 CST Daily Reconfiguration SASM for Sunday, May 10, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 10 2015 06:11:35 CST DC Tie Outage: The North DC Tie will be unavailable from 16:43 05/08/2015 through 16:00 05/15/2015 due to a forced outage. Operational Information Active
May 10 2015 06:10:33 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 16:00 05/11/2015 due to a forced outage. Operational Information Cancelled
May 10 2015 00:12:33 CST On 5/09/2015, a sudden loss of generation occurred at 07:51 totaling 772MW. Frequency declined to 59.826Hz. ERCOT load at 33468mw. Operational Information Active
May 09 2015 08:48:49 CST Daily Reconfiguration SASM for Saturday, May 9, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 09 2015 00:14:22 CST On 5/08/2015, a sudden loss of generation occurred at 16:48 totaling 624MW. Frequency declined to 59.886Hz. ERCOT load was 47453MW. Another sudden loss of generation occurred at 21:05 totaling 606MW. Frequency declined to 59.859Hz. ERCOT load was 42, 051MW. Another sudden loss of generation occurred at 23:54 totaling 511MW. Frequency declined to 59.864Hz. ERCOT load was 36, 262MW. Operational Information Active
May 08 2015 23:13:46 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 23:59 05/08/2015 due to a forced outage. Operational Information Cancelled
May 08 2015 23:13:33 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 23:59 05/08/2015 due to a forced outage. Operational Information Cancelled
May 08 2015 23:13:11 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 16:00 05/11/2015 due to a forced outage. Operational Information Active
May 08 2015 16:52:40 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 16:43 05/08/2015 through 23:59 05/08/2015 due to a forced outage. Operational Information Active
May 08 2015 11:42:13 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 11:06 05/08/2015 through 00:00 05/09/2015 due to a forced outage. Operational Information Cancelled
May 08 2015 11:11:36 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 11:06 05/08/2015 through 00:00 05/09/2015 due to a forced outage. Operational Information Active
May 08 2015 08:54:21 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 21:39 05/07/2015 through 16:00 05/08/2015 due to a forced outage. Operational Information Cancelled
May 08 2015 08:46:35 CST Daily Reconfiguration SASM for Friday, May 8, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 08 2015 04:57:20 CST ERCOT has cancelled the following notice: ERCOT is working from alternate control center. Operational Information Cancelled
May 08 2015 02:52:06 CST DC Tie Outage: The North DC Tie will be unavailable from 21:39 05/07/2015 through 16:00 05/08/2015 due to a forced outage. Operational Information Active
May 08 2015 02:51:04 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 21:39 05/07/2015 through 05:00 05/08/2015 due to a forced outage. Operational Information Cancelled
May 08 2015 00:14:21 CST On 5/07/2015, a sudden loss of generation occurred at 12:37 totaling 555MW. Frequency declined to 59.883Hz. ERCOT load was 42961MW. Operational Information Active
May 07 2015 23:55:06 CST DC Tie Outage: The North DC Tie will be unavailable from 21:39 05/07/2015 through 05:00 05/08/2015 due to a forced outage. Operational Information Active
May 07 2015 23:54:02 CST ERCOT has cancelled the following notice: The DC_N DC Tie will be unavailable from 21:39 05/07/2015 through 00:00 05/08/2015 due to a forced outage. Operational Information Cancelled
May 07 2015 21:52:36 CST DC Tie Outage: The DC_N DC Tie will be unavailable from 21:39 05/07/2015 through 00:00 05/08/2015 due to a forced outage. Operational Information Active
May 07 2015 16:37:34 CST ERCOT is working from alternate control center. Operational Information Active
May 07 2015 11:46:12 CST The Railroad DC Tie is derated to 150 MW in either direction thru 05/22/15 at 1800 due to continued maintenance. Operational Information Active
May 07 2015 09:20:38 CST Daily Reconfiguration SASM for Thursday, May 7, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 07 2015 07:58:48 CST An OCN has been issued due to ERCOT developing a new Generic Transmission Constraint due to a local voltage stability issue on the loss of Tesla to Gray 345kV single circuit due to Transmission Outages in the area. Operational Information Active
May 07 2015 00:00:59 CST On 5/06/2015, a sudden loss of generation occurred at 13:28 totaling 464MW. Frequency declined to 59.874Hz. ERCOT load was 43197MW. Operational Information Active
May 06 2015 08:56:48 CST Daily reconfiguration SASM for Wednesday, May 6, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 06 2015 00:21:09 CST No sudden loss of generation greater than 450 MW occurred on 05/05/2015. Operational Information Active
May 05 2015 08:51:10 CST Daily reconfiguration SASM for Tuesday, May 05, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 05 2015 08:16:40 CST ERCOT will execute a SASM in 30 minutes at 0841 for operating day 05/05/15 for HE 1100 for RRS MW 47. Operational Information Active
May 05 2015 04:31:20 CST No sudden loss of generation greater than 450 MW occurred on 05/04/2015. Operational Information Active
May 05 2015 04:18:08 CST ERCOT will execute a SASM at 0448 for operating day 05/05/15 for HE 0700 for RRS MW 54. Operational Information Active
May 04 2015 23:21:49 CST ERCOT will execute a SASM at 2352 for operating day 05/05/15 for HE 0200-0500 for RRS MW 53, 53, 53, 54. Operational Information Active
May 04 2015 08:50:16 CST Daily reconfiguration SASM for Monday, May 4, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 04 2015 00:55:46 CST No sudden loss of generation greater than 450 MW occurred on 05/03/2015. Operational Information Active
May 03 2015 08:49:15 CST Daily reconfiguration SASM for Sunday, May 3, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 03 2015 00:09:58 CST No sudden loss of generation greater than 450 MW occurred on 05/02/2015. Operational Information Active
May 02 2015 08:49:05 CST Daily reconfiguration SASM for Saturday, May 2, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 02 2015 00:40:36 CST No sudden loss of generation greater than 450 MW occurred on 05/01/2015. Operational Information Active
May 01 2015 23:44:32 CST ERCOT will execute a SASM at 00:15 for operating day 05/02/15 for HE03 57.6, HE04 57.7 and HE05 57.2 MW of RRS. Operational Information Active
May 01 2015 19:01:04 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 13:02 05/01/2015 through 00:00 05/02/2015 due to a forced outage. Operational Information Cancelled
May 01 2015 19:00:57 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 13:02 05/01/2015 through 00:00 05/02/2015 due to a forced outage. Operational Information Cancelled
May 01 2015 13:18:05 CST DC Tie Outage: The East DC Tie will be unavailable from 13:02 05/01/2015 through 00:00 05/02/2015 due to a forced outage. Operational Information Active
May 01 2015 08:50:43 CST Daily reconfiguration SASM for Friday, May 1, 2015 will not be occurring due to zero participating QSEs. Operational Information Active
May 01 2015 00:02:16 CST No sudden loss of generation greater than 450 MW occurred on 04/30/2015. Operational Information Active