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.)

    Feb 2016 Mar 2016 Apr 2016 May 2016 Jun 2016 Jul 2016
    Date Message Type Status
    Jul 23 2016 19:31:35 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 23 2016 15:28:55 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 23 2016 08:49:32 CST Daily RSASM for Saturday, July 23, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 23 2016 07:34:38 CST ERCOT has cancelled the following notice: At 05:59 ERCOT has issued a Watch due to HRUC not completing for HE07 due to failure. Watch Cancelled
    Jul 23 2016 07:34:25 CST ERCOT has cancelled the following notice: At 06:58 ERCOT has issued a Watch due to HRUC not completing for HE08 due to failure. Watch Cancelled
    Jul 23 2016 07:14:55 CST ERCOT has resolved the ESSP internal issue and has posted the PSS/E files for OD 20160724 as of 06:51. Please see related Reports on MIS. Advisory Active
    Jul 23 2016 07:00:25 CST At 06:58 ERCOT has issued a Watch due to HRUC not completing for HE08 due to failure. Watch Active
    Jul 23 2016 06:04:48 CST At 05:59 ERCOT has issued a Watch due to HRUC not completing for HE07 due to failure. Watch Active
    Jul 23 2016 05:58:43 CST ERCOT has postponed the creation of ESSP and PSSE files due to an internal issue that is being investigated and corrected. Please allow additional time for posting of the Reports for OD 20160724. An additional Market Notice will be sent when ESSP and PSSE files are posted. Watch Active
    Jul 23 2016 03:03:30 CST No sudden loss of generation greater than 450 MW occurred on 07/22/2016. Operational Information Active
    Jul 22 2016 20:00:04 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 22 2016 15:01:51 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 22 2016 08:47:25 CST Daily RSASM for Friday, July 22, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 22 2016 00:43:33 CST On 7/21/2016 a sudden loss of generation occurred at 14:53 totaling 703 MW. Frequency declined to 59.879 Hz, ERCOT load was 66, 868 MW Operational Information Active
    Jul 21 2016 16:20:13 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 21 2016 15:08:52 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 21 2016 08:49:07 CST Daily RSASM for Thursday, July 21, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 21 2016 01:08:27 CST No sudden loss of generation greater than 450 MW occurred on 07/20/2016. Operational Information Active
    Jul 20 2016 08:47:51 CST Daily RSASM for Wednesday, July 20, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 20 2016 01:17:38 CST No sudden loss of generation greater than 450 MW occurred on 07/19/2016. Operational Information Active
    Jul 19 2016 08:52:24 CST Daily RSASM for Tuesday, July 19, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 19 2016 05:38:17 CST ERCOT has cancelled the following notice: ERCOT using manual dispatch for contingency DFPPLOS5. Operational Information Cancelled
    Jul 19 2016 05:07:55 CST ERCOT using manual dispatch for contingency DFPPLOS5. Operational Information Active
    Jul 19 2016 00:33:49 CST On 7/18/2016 a sudden loss of generation occurred at 19:03 totaling 528 MW. Frequency declined to 59.858 Hz, ERCOT load was 63, 529 MW Operational Information Active
    Jul 18 2016 22:29:26 CST ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 21:00 07/18/2016 through 23:00 07/18/2016 due to a forced outage. Operational Information Cancelled
    Jul 18 2016 21:18:51 CST DC Tie Outage: The North DC Tie will be unavailable from 21:00 07/18/2016 through 23:00 07/18/2016 due to a forced outage. Operational Information Active
    Jul 18 2016 08:48:41 CST Daily RSASM for Monday, July 18, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 18 2016 01:03:03 CST No sudden loss of generation greater than 450 MW occurred on 07/17/2016. Operational Information Active
    Jul 17 2016 08:46:19 CST Daily RSASM for Sunday, July 17, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 17 2016 00:44:41 CST No sudden loss of generation greater than 450 MW occurred on 07/16/2016. Operational Information Active
    Jul 16 2016 19:00:00 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 16 2016 14:56:52 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 16 2016 08:50:09 CST Daily RSASM for Saturday, July 16, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 16 2016 00:08:58 CST No sudden loss of generation greater than 450 MW occurred on 07/15/2016. Operational Information Active
    Jul 15 2016 08:47:33 CST Daily RSASM for Friday, July 15, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 15 2016 08:44:50 CST DC Tie Outage: The East DC Tie will be unavailable from 15:52 07/14/2016 through 18:00 07/29/2016 due to a forced outage. Operational Information Active
    Jul 15 2016 08:42:12 CST ERCOT has cancelled the following notice: The EAST DC Tie will be unavailable from 15:52 07/14/2016 through 16:00 07/18/2016 due to a forced outage. Operational Information Cancelled
    Jul 15 2016 06:17:24 CST On 7/14/2016 a sudden loss of generation occurred at 15:51 totaling 581 MW. Frequency declined to 59.889 Hz, ERCOT load was 67, 318 MW. Operational Information Active
    Jul 15 2016 04:39:59 CST ERCOT is working from primary control center. Operational Information Active
    Jul 14 2016 21:07:24 CST DC Tie Outage: The EAST DC Tie will be unavailable from 15:52 07/14/2016 through 16:00 07/18/2016 due to a forced outage. Operational Information Active
    Jul 14 2016 17:30:47 CST ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Cancelled
    Jul 14 2016 15:56:10 CST DC Tie Outage: The East DC Tie will be unavailable from 15:52 07/14/2016 through 23:59 07/14/2016 due to a forced outage. Operational Information Active
    Jul 14 2016 14:48:26 CST Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW Advisory Active
    Jul 14 2016 08:46:31 CST Daily RSASM for Thursday, July 14, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 14 2016 03:17:23 CST On 7/13/2016 a sudden loss of generation occurred at 13:30 totaling 722 MW. Frequency declined to 59.858 Hz, ERCOT load was 64054 MW. Operational Information Active
    Jul 13 2016 17:50:11 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Operational Information Cancelled
    Jul 13 2016 16:47:47 CST Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Operational Information Active
    Jul 13 2016 08:47:59 CST Daily RSASM for Wednesday, July 13, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 13 2016 07:48:44 CST ERCOT has cancelled the following notice: The EAST DC Tie will be unavailable from 04:17 07/13/2016 through 23:59 07/13/2016 due to a forced outage. Operational Information Cancelled
    Jul 13 2016 04:52:15 CST DC Tie Outage: The EAST DC Tie will be unavailable from 04:17 07/13/2016 through 23:59 07/13/2016 due to a forced outage. Operational Information Active
    Jul 13 2016 04:51:35 CST No sudden loss of generation greater than 450 MW occurred on 07/12/2016. Operational Information Active
    Jul 12 2016 12:49:00 CST ERCOT has cancelled the following notice: At 08:20, ERCOT is issuing an OCN due to the forecasted probability of a 4, 000 MW down-ramp in the next 180 minutes. ERCOT is forecasting that the system ramp rate capability is sufficient. OCN Cancelled
    Jul 12 2016 11:38:52 CST ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 08:00 07/12/2016 through 16:00 07/12/2016 due to a planned outage. Operational Information Cancelled
    Jul 12 2016 11:38:34 CST ERCOT has cancelled the following notice: The DC_L DC Tie will be unavailable from 08:00 07/12/2016 through 16:00 07/12/2016 due to a planned outage. Operational Information Cancelled
    Jul 12 2016 08:48:03 CST Daily RSASM for Tuesday, July 12, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 12 2016 08:33:02 CST At 08:20, ERCOT is issuing an OCN due to the forecasted probability of a 4, 000 MW down-ramp in the next 180 minutes. ERCOT is forecasting that the system ramp rate capability is sufficient. OCN Active
    Jul 12 2016 05:41:09 CST No sudden loss of generation greater than 450 MW occurred on 07/11/2016. Operational Information Active
    Jul 12 2016 05:00:25 CST DC Tie Outage: The DC_L DC Tie will be unavailable from 08:00 07/12/2016 through 16:00 07/12/2016 due to a planned outage. Operational Information Active
    Jul 11 2016 10:17:47 CST DC Tie Outage: The Railroad HVDC 2 DC Tie will be unavailable from 09:00 07/11/2016 through 23:59 07/29/2016 due to a forced outage. Operational Information Active
    Jul 11 2016 08:53:59 CST Daily RSASM for Monday, July 11, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 11 2016 00:09:00 CST On 7/10/2016, a sudden loss of generation occurred at 01:14 totaling 528MW. Frequency declined to 59.860hz. ERCOT load was 40, 580MW. Another sudden loss of generation occurred at 18:54 totaling 1442.84MW. Frequency declined to 59.790hz, ERCOT load was 59, 419MW Operational Information Active
    Jul 10 2016 08:50:09 CST Daily RSASM for Sunday, July 10, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 10 2016 00:09:04 CST No sudden loss of generation greater than 450 MW occurred on 07/09/2016. Operational Information Active
    Jul 09 2016 08:50:59 CST Daily RSASM for Saturday, July 09, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 09 2016 00:12:57 CST No sudden loss of generation greater than 450 MW occurred on 07/08/2016. Operational Information Active
    Jul 08 2016 08:56:47 CST Daily RSASM for Friday, July 08, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 08 2016 00:12:31 CST On 7/07/2016 a sudden loss of generation occurred at 13:01 totaling 656MW. Frequency declined to 59.852hz. ERCOT load was 61162MW Operational Information Active
    Jul 07 2016 13:59:27 CST ERCOT has cancelled the following notice: ERCOT has issued an Emergency Notice due to the failure of SCED/RLC Failure. Emergency Notice Cancelled
    Jul 07 2016 13:47:54 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT’s State Estimator/RTCA is currently unavailable. Advisory Cancelled
    Jul 07 2016 13:47:50 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Advisory Cancelled
    Jul 07 2016 13:43:49 CST ERCOT has cancelled the following notice: ERCOT has issued an Emergency Notice due to the failure of SCED/RLC Failure. Emergency Notice Cancelled
    Jul 07 2016 12:22:39 CST Advisory issued due to ERCOT’s Voltage Security Assessment Tool is currently unavailable. Advisory Active
    Jul 07 2016 12:21:31 CST Advisory issued due to ERCOT’s State Estimator/RTCA is currently unavailable. Advisory Active
    Jul 07 2016 12:21:10 CST ERCOT has cancelled the following notice: Advisory issued due to ERCOT’s State Estimator/RTCA is currently unavailable. Operational Information Cancelled
    Jul 07 2016 12:19:49 CST Advisory issued due to ERCOT’s State Estimator/RTCA is currently unavailable. Operational Information Active
    Jul 07 2016 12:09:18 CST ERCOT has issued an Emergency Notice due to the failure of SCED/RLC Failure. Emergency Notice Active
    Jul 07 2016 08:51:06 CST Daily RSASM for Thursday, July 07, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 07 2016 08:46:42 CST ERCOT has cancelled the following notice: The Allen Switch SPS has been taken out of service/removed from RTCA. Operational Information Cancelled
    Jul 07 2016 08:23:41 CST The Allen Switch SPS has been taken out of service/removed from RTCA. Operational Information Active
    Jul 07 2016 00:07:36 CST No sudden loss of generation greater than 450 MW occurred on 07/06/2016. Operational Information Active
    Jul 06 2016 08:49:35 CST Daily RSASM for Wednesday, July 6, 2016, will not be occurring due to zero participating QSE’s. Operational Information Active
    Jul 06 2016 00:04:09 CST No sudden loss of generation greater than 450 MW occurred on 07/05/2016. Operational Information Active
    Jul 05 2016 15:23:06 CST DC Tie Outage: The Laredo DC Tie will be unavailable from 08:00 07/12/2016 through 16:00 07/12/2016 due to a planned outage. Operational Information Active
    Jul 05 2016 08:46:10 CST Daily RSASM for Tuesday July 5 2016, will not be occurring due to zero participating QSE’s. Operational Information Active
    Jul 05 2016 00:01:12 CST No sudden loss of generation greater than 450 MW occurred on 07/04/2016. Operational Information Active
    Jul 04 2016 08:46:20 CST Daily RSASM for Monday, July 4, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 04 2016 00:18:55 CST No sudden loss of generation greater than 450 MW occurred on 07/03/2016. Operational Information Active
    Jul 03 2016 08:52:46 CST Daily RSASM for Sunday, July 3, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 03 2016 00:01:21 CST No sudden loss of generation greater than 450 MW occurred on 07/02/2016. Operational Information Active
    Jul 02 2016 08:47:21 CST Daily RSASM for Saturday, July 2, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 02 2016 00:10:01 CST No sudden loss of generation greater than 450 MW occurred on 07/01/2016. Operational Information Active
    Jul 01 2016 14:22:16 CST ERCOT has cancelled the following notice: Advisory due to VSAT tool not solving for the last 30min. Operational Information Cancelled
    Jul 01 2016 14:17:42 CST Advisory due to VSAT tool not solving for the last 30min. Operational Information Active
    Jul 01 2016 08:46:21 CST Daily RSASM for Friday, July 1, 2016 will not be occurring due to zero participating QSEs. Operational Information Active
    Jul 01 2016 00:09:26 CST No sudden loss of generation greater than 450 MW occurred on 06/30/2016. Operational Information Active