Public Notices
This section contains public market notifications required by protocols as well as other market messages ERCOT may post for market transparency. Notices are categorized by types and can be filtered by selecting the desired category. ERCOT began archiving public notices November 3, 2011.
| Date | Message | Type | Status |
|---|---|---|---|
| Dec 31 2018 08:48:56 CST | The Daily RSASM for Monday, December 31, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 31 2018 00:37:20 CST | No sudden loss of generation greater than 450 MW occurred on December 30, 2018 | Operational Information | Active |
| Dec 30 2018 14:27:06 CST | At 1430, ERCOT is issuing an OCN for a potential extreme cold weather system with the possibility of frozen precipitation approaching the ERCOT region from 01/02/19 to 01/03/19. | Operational Information | Active |
| Dec 30 2018 08:46:07 CST | The Daily RSASM for Sunday, December 30, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 30 2018 01:32:34 CST | No sudden loss of generation greater than 450 MW occurred on December 29, 2018. | Operational Information | Active |
| Dec 29 2018 08:46:58 CST | The Daily RSASM for Saturday, December 29, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 29 2018 00:08:37 CST | No sudden loss of generation greater than 450 MW occurred on December 28, 2018. | Operational Information | Active |
| Dec 28 2018 08:46:25 CST | The Daily RSASM for Friday, December 28, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 28 2018 00:39:23 CST | No sudden loss of generation greater than 450 MW occurred on December 27, 2018. | Operational Information | Active |
| Dec 27 2018 15:01:22 CST | Frequency Measurable Events: Report tracking Frequency Measurable Events (FMEs) as of Dec 27, 2018 is available. | Operational Instruction | Active |
| Dec 27 2018 08:46:18 CST | The Daily RSASM for Thursday, December 27, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 27 2018 01:20:19 CST | On 12/26/2018 a sudden loss of generation occurred at 09:24 totaling 502 MW. Frequency declined to 59.887 Hz, ERCOT load was 37, 222 MW. | Operational Information | Active |
| Dec 26 2018 09:27:26 CST | ERCOT Responsive Reserve Has Been Recalled | Operational Information | Cancelled |
| Dec 26 2018 09:24:18 CST | ERCOT Responsive Reserve Has Been Deployed | Operational Information | Active |
| Dec 26 2018 08:47:35 CST | The Daily RSASM for Wednesday December 26, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 26 2018 07:38:27 CST | No sudden loss of generation greater than 450 MW occurred on December 25, 2018. | Operational Information | Active |
| Dec 25 2018 16:04:44 CST | No sudden loss of generation greater than 450 MW occurred on December 24, 2018. | Operational Information | Active |
| Dec 25 2018 08:47:52 CST | The Daily RSASM for Tuesday December 25, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 24 2018 08:47:04 CST | The Daily RSASM for Monday December 24, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 24 2018 00:25:27 CST | On 12/23/2018 a sudden loss of generation occurred at 06:53 totaling 852 MW. Frequency declined to 59.823 Hz, ERCOT load was 35, 508 MW. | Operational Information | Active |
| Dec 23 2018 08:47:06 CST | The Daily RSASM for Sunday, December 23, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 23 2018 06:56:50 CST | ERCOT Responsive Reserve Has Been Recalled | Operational Information | Cancelled |
| Dec 23 2018 06:53:18 CST | ERCOT Responsive Reserve Has Been Deployed | Operational Information | Active |
| Dec 23 2018 01:43:33 CST | No sudden loss of generation greater than 450 MW occurred on December 22, 2018. | Operational Information | Active |
| Dec 22 2018 08:49:27 CST | The Daily RSASM for Saturday, December 22, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 22 2018 00:56:33 CST | No sudden loss of generation greater than 450 MW occurred on December 21, 2018. | Operational Information | Active |
| Dec 21 2018 15:52:56 CST | ERCOT has cancelled the following notice: The DC_L DC Tie will be unavailable from 20:22 12/19/2018 through 16:00 12/21/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 21 2018 08:48:22 CST | The Daily RSASM for Friday, December 21, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 21 2018 01:50:41 CST | No sudden loss of generation greater than 450 MW occurred on December 20, 2018. | Operational Information | Active |
| Dec 20 2018 18:17:08 CST | ERCOT has cancelled the following notice: The B_DAVIS RAS is out of service. | Operational Information | Cancelled |
| Dec 20 2018 16:23:49 CST | DC Tie Outage: The DC_L DC Tie will be unavailable from 20:22 12/19/2018 through 16:00 12/21/2018 due to a forced outage. | Operational Information | Active |
| Dec 20 2018 16:21:46 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 20:22 12/19/2018 through 17:00 12/20/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 20 2018 08:50:46 CST | The Daily RSASM for Thursday, December 20, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 20 2018 08:02:30 CST | ERCOT has cancelled the following notice: The Laredo 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 |
| Dec 20 2018 00:02:14 CST | No sudden loss of generation greater than 450 MW occurred on December 19, 2018. | Operational Information | Active |
| Dec 20 2018 00:01:15 CST | ERCOT has cancelled the following notice: The Laredo 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 |
| Dec 20 2018 00:00:53 CST | DC Tie Curtailment Notice: The Laredo 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 |
| Dec 19 2018 20:43:14 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 20:22 12/19/2018 through 17:00 12/20/2018 due to a forced outage. | Operational Information | Active |
| Dec 19 2018 20:24:12 CST | DC Tie Curtailment Notice: The Laredo 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 |
| Dec 19 2018 13:52:37 CST | D.A.M. is completed, DRUC will begin at 14:45 | Advisory | Active |
| Dec 19 2018 12:30:58 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 | AS Postings | Active |
| Dec 19 2018 08:46:39 CST | The Daily RSASM for Wednesday, December 19, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 19 2018 07:41:23 CST | The B_DAVIS RAS is out of service. | Operational Information | Active |
| Dec 19 2018 00:15:38 CST | No sudden loss of generation greater than 450 MW occurred on December 18, 2018. | Operational Information | Active |
| Dec 18 2018 16:14:52 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 00:00 12/18/2018 through 17:00 12/18/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 18 2018 12:33:34 CST | ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 11:50 12/18/2018 through 18:00 12/18/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 18 2018 11:50:35 CST | DC Tie Outage: The East DC Tie will be unavailable from 11:50 12/18/2018 through 18:00 12/18/2018 due to a forced outage. | Operational Information | Active |
| Dec 18 2018 11:49:41 CST | ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 21:10 11/16/2018 through 12:00 12/18/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 18 2018 01:51:29 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 00:00 12/18/2018 through 17:00 12/18/2018 due to a forced outage. | Operational Information | Active |
| Dec 18 2018 00:07:21 CST | No sudden loss of generation greater than 450 MW occurred on December 17, 2018. | Operational Information | Active |
| Dec 18 2018 00:01:29 CST | ERCOT has cancelled the following notice: The Laredo 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 |
| Dec 17 2018 23:28:46 CST | DC Tie Curtailment Notice: The Laredo 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 |
| Dec 17 2018 11:39:07 CST | ERCOT has cancelled the following notice: The Laredo (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 |
| Dec 17 2018 11:38:54 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 02:05 12/16/2018 through 12:00 12/17/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 17 2018 08:46:31 CST | The Daily RSASM for Monday, December 17, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 17 2018 00:00:12 CST | No sudden loss of generation greater than 450 MW occurred on December 16, 2018. | Operational Information | Active |
| Dec 16 2018 11:59:54 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 02:05 12/16/2018 through 12:00 12/17/2018 due to a forced outage. | Operational Information | Active |
| Dec 16 2018 11:58:25 CST | ERCOT has cancelled the following notice: The laredo (DC_L) DC Tie will be unavailable from 02:05 12/16/2018 through 12:00 12/16/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 16 2018 08:47:05 CST | The Daily RSASM for Sunday, December 16, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 16 2018 03:53:05 CST | DC Tie Curtailment Notice: The Laredo (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 |
| Dec 16 2018 03:46:13 CST | DC Tie Outage: The laredo (DC_L) DC Tie will be unavailable from 02:05 12/16/2018 through 12:00 12/16/2018 due to a forced outage. | Operational Information | Active |
| Dec 16 2018 03:44:44 CST | ERCOT has cancelled the following notice: The Laredo (DC_L) DC Tie will be unavailable from 02:05 12/16/2018 through 08:00 12/16/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 16 2018 02:25:28 CST | DC Tie Outage: The Laredo (DC_L) DC Tie will be unavailable from 02:05 12/16/2018 through 08:00 12/16/2018 due to a forced outage. | Operational Information | Active |
| Dec 16 2018 00:05:17 CST | No sudden loss of generation greater than 450 MW occurred on December 15, 2018. | Operational Information | Active |
| Dec 15 2018 08:47:33 CST | The Daily RSASM for Saturday, December 15, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 15 2018 00:01:11 CST | No sudden loss of generation greater than 450 MW occurred on December 14, 2018. | Operational Information | Active |
| Dec 14 2018 12:51:45 CST | DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 12:00 12/18/2018 due to a forced outage. | Operational Information | Active |
| Dec 14 2018 12:49:59 CST | ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/14/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 14 2018 08:47:18 CST | The Daily RSASM for Friday, December 14, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 14 2018 01:54:38 CST | No sudden loss of generation greater than 450 MW occurred on December 13, 2018. | Operational Information | Active |
| Dec 13 2018 08:48:20 CST | The Daily RSASM for Thursday, December 13, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 13 2018 01:39:03 CST | No sudden loss of generation greater than 450 MW occurred on December 12, 2018. | Operational Information | Active |
| Dec 12 2018 14:45:38 CST | ERCOT has cancelled the following notice: The Laredo (DC_L) DC Tie will be unavailable from 02:20 12/10/2018 through 17:00 12/14/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 12 2018 08:48:49 CST | The Daily RSASM for Wednesday, December 12, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 12 2018 00:42:51 CST | No sudden loss of generation greater than 450 MW occurred on December 11, 2018. | Operational Information | Active |
| Dec 11 2018 08:47:47 CST | The Daily RSASM for Tuesday, December 11, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 11 2018 00:33:50 CST | No sudden loss of generation greater than 450 MW occurred on December 10, 2018. | Operational Information | Active |
| Dec 11 2018 00:20:23 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 |
| Dec 11 2018 00:05:31 CST | ERCOT has cancelled the following notice: The Laredo (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 |
| Dec 11 2018 00:01:33 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 |
| Dec 10 2018 10:54:26 CST | ERCOT has cancelled the following notice: The Laredo 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 |
| Dec 10 2018 10:54:03 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 02:32 12/10/2018 through 12:00 12/10/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 10 2018 10:53:10 CST | DC Tie Curtailment Notice: The Laredo (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 |
| Dec 10 2018 10:51:46 CST | DC Tie Outage: The Laredo (DC_L) DC Tie will be unavailable from 02:20 12/10/2018 through 17:00 12/14/2018 due to a forced outage. | Operational Information | Active |
| Dec 10 2018 08:49:16 CST | The Daily RSASM for Monday, December 10, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 10 2018 02:58:55 CST | DC Tie Curtailment Notice: The Laredo 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 |
| Dec 10 2018 02:58:02 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 02:32 12/10/2018 through 12:00 12/10/2018 due to a forced outage. | Operational Information | Active |
| Dec 10 2018 00:03:01 CST | No sudden loss of generation greater than 450 MW occurred on December 09, 2018. | Operational Information | Active |
| Dec 09 2018 12:55:33 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 02:10 12/09/2018 through 16:00 12/09/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 09 2018 12:55:22 CST | ERCOT has cancelled the following notice: The Laredo 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 |
| Dec 09 2018 12:28:00 CST | ERCOT has cancelled the following notice: The Eskota Sw RAS has been taken out of service/removed from RTCA. | Operational Information | Cancelled |
| Dec 09 2018 12:27:50 CST | ERCOT has cancelled the following notice: The Eskota Sw RAS has been taken out of service/removed from RTCA. | Operational Information | Cancelled |
| Dec 09 2018 08:44:51 CST | The Daily RSASM for Sunday, December 9, 2018 will not be occurring due to zero participating QSEs | Operational Information | Active |
| Dec 09 2018 03:07:45 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 02:10 12/09/2018 through 16:00 12/09/2018 due to a forced outage. | Operational Information | Active |
| Dec 09 2018 03:06:31 CST | ERCOT has cancelled the following notice: The Laredo DC Tie will be unavailable from 02:10 12/09/2018 through 23:59 12/09/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 09 2018 03:05:28 CST | DC Tie Curtailment Notice: The Laredo 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 |
| Dec 09 2018 02:33:09 CST | DC Tie Outage: The Laredo DC Tie will be unavailable from 02:10 12/09/2018 through 23:59 12/09/2018 due to a forced outage. | Operational Information | Active |
| Dec 09 2018 00:27:10 CST | No sudden loss of generation greater than 450 MW occurred on December 08, 2018. | Operational Information | Active |
| Dec 08 2018 09:13:27 CST | ERCOT has cancelled the following notice: UPDATE, new return date: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/10/2018 due to a forced outage. | Operational Information | Cancelled |
| Dec 08 2018 09:12:19 CST | DC Tie Outage: The East DC Tie will be unavailable from 21:10 11/16/2018 through 16:00 12/14/2018 due to a forced outage. | Operational Information | Active |
| Dec 08 2018 08:47:14 CST | The Daily RSASM for Saturday, December 8, 2018 will not be occurring due to zero participating QSEs | Operational Information | Active |
| Dec 08 2018 00:30:56 CST | No sudden loss of generation greater than 450 MW occurred on December 07, 2018. | Operational Information | Active |
| Dec 07 2018 10:52:06 CST | The Eskota Sw RAS has been taken out of service/removed from RTCA. | Operational Information | Active |
| Dec 07 2018 08:45:17 CST | The Daily RSASM for Friday, December 7, 2018 will not be occurring due to zero participating QSEs | Operational Information | Active |
| Dec 07 2018 04:39:04 CST | Ercot working from Primary Control Center. Use OPX numbers for Taylor. | Operational Information | Active |
| Dec 07 2018 00:00:16 CST | No sudden loss of generation greater than 450 MW occurred on December 06, 2018. | Operational Information | Active |
| Dec 06 2018 15:13:12 CST | At 14:23 on 12/06/2018 the Eagle Pass DC Tie outage has ended and is back in service. | Operational Information | Active |
| Dec 06 2018 08:45:11 CST | The Daily RSASM for Thursday, December 6, 2018 will not be occurring due to zero participating QSEs | Operational Information | Active |
| Dec 06 2018 00:00:11 CST | No sudden loss of generation greater than 450 MW occurred on December 05, 2018. | Operational Information | Active |
| Dec 05 2018 08:46:20 CST | The Daily RSASM for Wednesday, December 5, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 05 2018 00:01:41 CST | No sudden loss of generation greater than 450 MW occurred on December 04, 2018. | Operational Information | Active |
| Dec 04 2018 08:46:18 CST | The Daily RSASM for Tuesday, December 4, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 04 2018 00:00:10 CST | No sudden loss of generation greater than 450 MW occurred on December 03, 2018. | Operational Information | Active |
| Dec 03 2018 16:26:43 CST | ERCOT has cancelled the following notice: At 3:25 PM on 12/03/2018, 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 |
| Dec 03 2018 16:03:38 CST | ERCOT Emergency Base Points are Disabled | Operational Information | Cancelled |
| Dec 03 2018 15:42:22 CST | ERCOT Emergency Base Points are Enabled | Operational Information | Active |
| Dec 03 2018 12:07:26 CST | At 3:25 PM on 12/03/2018, 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 | Active |
| Dec 03 2018 08:52:49 CST | The Daily RSASM for Monday, December 3, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 03 2018 00:25:13 CST | On 12/02/2018 a sudden loss of generation occurred at 00:34 totaling 483 MW. Frequency declined to 59.911 Hz, ERCOT load was 30, 227 MW. | Operational Information | Active |
| Dec 02 2018 16:51:51 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 |
| Dec 02 2018 08:47:04 CST | The Daily RSASM for Sunday, December 2, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 02 2018 00:01:03 CST | No sudden loss of generation greater than 450 MW occurred on December 01, 2018. | Operational Information | Active |
| Dec 01 2018 16:21:04 CST | ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. | Operational Information | Active |
| Dec 01 2018 08:48:06 CST | The Daily RSASM for Saturday, December 1, 2018 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Dec 01 2018 00:39:36 CST | No sudden loss of generation greater than 450 MW occurred on November 30, 2018. | Operational Information | Active |