Operations Messages - October 2019

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.)

Sep 2019 Oct 2019 Nov 2019 Dec 2019 Jan 2020 Feb 2020
Date Message Type Status
Oct 31 2019 08:49:29 CST The Daily RSASM for Thursday October 31, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 31 2019 08:18:46 CST ERCOT has cancelled the following notice: On October 30, 2019, a sudden loss of generation occurred at 21:29 totaling 746 MW. Frequency declined to 59.841 Hz, ERCOT load was 44, 262 MW. Operational Information Cancelled
Oct 31 2019 08:18:37 CST Correction-On October 30, 2019, a sudden loss of generation occurred at 21:29 totaling 846 MW. Frequency declined to 59.841 Hz, ERCOT load was 44, 262 MW. Operational Information Active
Oct 31 2019 00:41:03 CST On October 30, 2019, a sudden loss of generation occurred at 21:29 totaling 746 MW. Frequency declined to 59.841 Hz, ERCOT load was 44, 262 MW. Operational Information Active
Oct 30 2019 21:33:15 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Oct 30 2019 21:29:47 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Oct 30 2019 08:45:21 CST The Daily RSASM for Wednesday October 30, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Oct 30 2019 00:27:46 CST No sudden loss of generation greater than 450 MW occurred on October 29, 2019. Operational Information Active
Oct 29 2019 15:43:03 CST ERCOT has cancelled the following notice: The DC_E DC Tie will be unavailable from 16:00 10/25/2019 through 16:00 10/30/2019 due to a planned outage. Operational Information Cancelled
Oct 29 2019 08:46:16 CST The Daily RSASM for Tuesday October 29, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Oct 29 2019 00:21:55 CST No sudden loss of generation greater than 450 MW occurred on October 28, 2019. Operational Information Active
Oct 28 2019 08:45:33 CST The Daily RSASM for Monday October 28, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Oct 28 2019 00:00:27 CST No sudden loss of generation greater than 450 MW occurred on October 27, 2019. Operational Information Active
Oct 27 2019 08:47:17 CST The Daily RSASM for Sunday October 27, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 27 2019 00:00:57 CST No sudden loss of generation greater than 450 MW occurred on October 26, 2019. Operational Information Active
Oct 26 2019 08:48:51 CST The Daily RSASM for Saturday October 26, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 26 2019 00:01:43 CST No sudden loss of generation greater than 450 MW occurred on October 25, 2019. Operational Information Active
Oct 25 2019 10:56:01 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 07:00 10/21/2019 through 17:00 10/28/2019 due to a planned outage. Operational Information Cancelled
Oct 25 2019 08:47:26 CST The Daily RSASM for Friday October 25, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 25 2019 07:02:48 CST ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Cancelled
Oct 25 2019 01:32:53 CST Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Active
Oct 25 2019 00:32:53 CST No sudden loss of generation greater than 450 MW occurred on October 24, 2019. Operational Information Active
Oct 24 2019 08:51:41 CST The Daily RSASM for Thursday October 24, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 24 2019 00:15:03 CST No sudden loss of generation greater than 450 MW occurred on October 23, 2019. Operational Information Active
Oct 23 2019 08:58:33 CST The Daily RSASM for Wednesday, October 23, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 23 2019 01:01:34 CST ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Cancelled
Oct 23 2019 00:43:40 CST No sudden loss of generation greater than 450 MW occurred on October 22, 2019. Operational Information Active
Oct 22 2019 18:57:34 CST Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Active
Oct 22 2019 08:50:11 CST The Daily RSASM for Tuesday, October 22, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 22 2019 08:48:17 CST ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Cancelled
Oct 22 2019 00:46:49 CST No sudden loss of generation greater than 450 MW occurred on October 21, 2019. Operational Information Active
Oct 21 2019 19:36:33 CST Transmission Emergency Notice has been issued for Far West Texas. Emergency Notice Active
Oct 21 2019 16:38:14 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 07:15 10/14/2019 through 17:00 10/18/2019 due to a planned outage. Operational Information Cancelled
Oct 21 2019 16:15:36 CST DC Tie Outage: The DC_E DC Tie will be unavailable from 16:00 10/25/2019 through 16:00 10/30/2019 due to a planned outage. Operational Information Active
Oct 21 2019 09:05:08 CST The Daily RSASM for Monday, October 21, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 21 2019 00:10:34 CST No sudden loss of generation greater than 450 MW occurred on October 20, 2019. Operational Information Active
Oct 20 2019 08:46:11 CST The Daily RSASM for Sunday, October 20, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 20 2019 00:25:09 CST No sudden loss of generation greater than 450 MW occurred on October 19, 2019. Operational Information Active
Oct 19 2019 08:46:18 CST The Daily RSASM for Saturday, October 19, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 19 2019 00:28:46 CST No sudden loss of generation greater than 450 MW occurred on October 18, 2019. Operational Information Active
Oct 18 2019 16:12:17 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable on 10/18/2019 from 10:00 until 16:00 due to a planned outage. Operational Information Cancelled
Oct 18 2019 13:20:56 CST DC Tie Outage: The East DC Tie will be unavailable from 16:00 10/18/2019 through 16:00 10/25/2019 due to a forced outage. Operational Information Active
Oct 18 2019 08:46:26 CST The Daily RSASM for Friday, October 18, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 18 2019 06:49:48 CST The minimum monthly Ancillary Services quantities have been posted to the ERCOT Market Information System (MIS) under the Projected Ancillary Service Requirements link under the Medium-Term System Adequacy heading. The posted quantities reflect minimum requirements only. ERCOT will follow-up with a Notification if any upward adjustments to these minimum quantities are made. https://mis.ercot.com/pps/tibco/mis/Pages/Grid+Information/Forecasts Operational Information Active
Oct 18 2019 00:02:50 CST No sudden loss of generation greater than 450 MW occurred on October 17, 2019 Operational Information Active
Oct 17 2019 16:18:05 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable on 10/17/2019 from 10:00 until 16:00 due to a planned outage. Operational Information Cancelled
Oct 17 2019 12:25:04 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 07:00 10/21/2019 through 17:00 10/28/2019 due to a planned outage. Operational Information Active
Oct 17 2019 12:23:37 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 07:00 10/21/2019 through 17:00 10/28/2019 due to a planned outage. Operational Information Active
Oct 17 2019 08:46:22 CST The Daily RSASM for Thursday, October 17, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 17 2019 00:01:32 CST No sudden loss of generation greater than 450 MW occurred on October 16, 2019. Operational Information Active
Oct 16 2019 08:46:43 CST The Daily RSASM for Wednesday October 16, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 16 2019 06:26:35 CST ERCOT has cancelled the following notice: ERCOT is bypassing the GAUSS Series Capacitor for SSR mitigation. Operational Information Cancelled
Oct 16 2019 00:24:09 CST No sudden loss of generation greater than 450 MW occurred on October 15, 2019 Operational Information Active
Oct 15 2019 16:42:39 CST ERCOT has cancelled the following notice: The Laredo VFT DC Tie will be unavailable from 06:30 10/15/2019 through 17:00 10/15/2019 due to a planned outage. Operational Information Cancelled
Oct 15 2019 13:56:19 CST ERCOT is bypassing the GAUSS Series Capacitor for SSR mitigation. Operational Information Active
Oct 15 2019 12:21:30 CST The Railroad DC Tie will be unavailable on 10/17/2019 from 10:00 until 16:00 due to a planned outage. Operational Information Active
Oct 15 2019 08:52:28 CST The Daily RSASM for Tuesday October 15, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 15 2019 00:00:24 CST On 10/14/2019 a sudden loss of generation occurred at 15:31 totaling 576 MW. Frequency declined to 59.896 Hz, ERCOT load was 49, 447 MW. Operational Information Active
Oct 14 2019 15:35:34 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
Oct 14 2019 15:31:42 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
Oct 14 2019 12:19:48 CST The Railroad DC Tie will be unavailable on 10/18/2019 from 10:00 until 16:00 due to a planned outage. Operational Information Active
Oct 14 2019 09:17:54 CST ERCOT has cancelled the following notice: Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit DC_E starting on Monday 10/14/19 at 08:00 until Friday 10/18/19 at 16:00 for E_HVDC maintenance outage. Operational Information Cancelled
Oct 14 2019 08:49:13 CST The Daily RSASM for Monday October 14, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 14 2019 07:18:37 CST Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit DC_E starting on Monday 10/14/19 at 08:00 until Friday 10/18/19 at 16:00 for E_HVDC maintenance outage. Operational Information Active
Oct 14 2019 07:17:48 CST DC Tie Outage: The East DC Tie will be unavailable from 07:15 10/14/2019 through 17:00 10/18/2019 due to a planned outage. Operational Information Active
Oct 14 2019 00:49:41 CST No sudden loss of generation greater than 450 MW occurred on October 13, 2019 Operational Information Active
Oct 13 2019 08:48:28 CST The Daily RSASM for Saturday, October 12, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 13 2019 00:00:08 CST No sudden loss of generation greater than 450 MW occurred on October 12, 2019 Operational Information Active
Oct 12 2019 08:47:28 CST The Daily RSASM for Saturday, October 12, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 12 2019 00:20:15 CST No sudden loss of generation greater than 450 MW occurred on October 11, 2019 Operational Information Active
Oct 11 2019 08:49:01 CST The Daily RSASM for Friday, October 11, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 11 2019 04:16:47 CST ERCOT has cancelled the following notice: ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Cancelled
Oct 11 2019 04:16:09 CST ERCOT will be working from the Primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
Oct 11 2019 01:05:44 CST No sudden loss of generation greater than 450 MW occurred on October 10, 2019. Operational Information Active
Oct 10 2019 16:14:11 CST ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Oct 10 2019 08:48:21 CST The Daily RSASM for Thursday, October 10, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 10 2019 00:17:12 CST No sudden loss of generation greater than 450 MW occurred on October 9, 2019 Operational Information Active
Oct 09 2019 11:28:27 CST DC Tie Outage: The Laredo VFT DC Tie will be unavailable from 06:30 10/15/2019 through 17:00 10/15/2019 due to a planned outage. Operational Information Active
Oct 09 2019 08:46:15 CST The Daily RSASM for Wednesday, October 9, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 09 2019 00:04:21 CST No sudden loss of generation greater than 450 MW occurred on October 8, 2019 Operational Information Active
Oct 08 2019 08:46:13 CST The Daily RSASM for Tuesday, October 8, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 08 2019 01:01:44 CST No sudden loss of generation greater than 450 MW occurred on October 7, 2019 Operational Information Active
Oct 07 2019 15:11:25 CST ERCOT has cancelled the following notice: On 10/6/2019 a sudden loss of generation occurred at 14:50 totaling 666 MW. Frequency declined to 59.945 Hz, ERCOT load was 61, 618 MW. Operational Information Cancelled
Oct 07 2019 15:11:03 CST CORRECTION: On 10/6/2019 a sudden loss of generation occurred at 14:50 totaling 866 MW. Frequency declined to 59.945 Hz, ERCOT load was 61, 618 MW. Operational Information Active
Oct 07 2019 08:46:26 CST The Daily RSASM for Monday, October 7, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 07 2019 04:34:07 CST ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor. Operational Information Active
Oct 07 2019 00:15:50 CST On 10/6/2019 a sudden loss of generation occurred at 14:50 totaling 666 MW. Frequency declined to 59.945 Hz, ERCOT load was 61, 618 MW. Operational Information Active
Oct 06 2019 16:05:45 CST ERCOT has cancelled the following notice: The Railroad DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
Oct 06 2019 16:05:38 CST ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 14:50 10/06/2019 through 23:59 10/06/2019 due to a forced outage. Operational Information Cancelled
Oct 06 2019 15:21:03 CST DC Tie Outage: The Railroad DC Tie will be unavailable from 14:50 10/06/2019 through 23:59 10/06/2019 due to a forced outage. Operational Information Active
Oct 06 2019 15:02:05 CST DC Tie Curtailment Notice: The Railroad DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
Oct 06 2019 08:46:13 CST The Daily RSASM for Sunday, October 6, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 06 2019 00:06:37 CST No sudden loss of generation greater than 450 MW occurred on October 5, 2019 Operational Information Active
Oct 05 2019 08:48:15 CST The Daily RSASM for Saturday, October 5, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 05 2019 04:19:14 CST ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
Oct 05 2019 00:31:45 CST ERCOT has cancelled the following notice: At 3:25 PM on 09/30/2019, 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
Oct 05 2019 00:05:51 CST No sudden loss of generation greater than 450 MW occurred on October 4, 2019 Operational Information Active
Oct 04 2019 18:13:47 CST ERCOT has cancelled the following notice: The GAUSS Series capacitor was bypassed for a planned transmission outage. Operational Information Cancelled
Oct 04 2019 08:47:43 CST The Daily RSASM for Friday, October 4, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 04 2019 00:39:12 CST No sudden loss of generation greater than 450 MW occurred on October 3, 2019 Operational Information Active
Oct 03 2019 17:54:28 CST ERCOT has cancelled the following notice: ERCOT has issued an OCN for Extreme Hot Weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Oct.1, through Oct. 3 2019 . Operational Information Cancelled
Oct 03 2019 08:46:15 CST The Daily RSASM for Thursday, October 3, 2019 will not be occurring due to zero participating QSEs. Operational Information Active
Oct 03 2019 00:19:37 CST No sudden loss of generation greater than 450 MW occurred on October 2, 2019 Operational Information Active
Oct 02 2019 12:55:10 CST ERCOT has cancelled the following notice: The DC_L DC Tie will be unavailable from 05:09 10/02/2019 through 23:59 10/02/2019 due to a forced outage. Operational Information Cancelled
Oct 02 2019 12:54:26 CST ERCOT has cancelled the following notice: The DC_L DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Cancelled
Oct 02 2019 08:47:08 CST The Daily RSASM for Wednesday, October 02, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Oct 02 2019 05:13:06 CST DC Tie Outage: The DC_L DC Tie will be unavailable from 05:09 10/02/2019 through 23:59 10/02/2019 due to a forced outage. Operational Information Active
Oct 02 2019 05:09:55 CST DC Tie Curtailment Notice: The DC_L DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to a planned or unplanned outage. DC Tie Curtailment Notice Active
Oct 02 2019 01:44:26 CST No sudden loss of generation greater than 450 MW occurred on October 1, 2019. Operational Information Active
Oct 01 2019 08:47:11 CST The Daily RSASM for Tuesday, October 01, 2019 will not be occurring due to zero participating QSEs Operational Information Active
Oct 01 2019 00:31:05 CST No sudden loss of generation greater than 450 MW occurred on September 30, 2019. Operational Information Active