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.

    May 2018 Jun 2018 Jul 2018 Aug 2018 Sep 2018 Oct 2018
    Date Message Type Status
    Oct 16 2018 08:45:28 CST The Daily RSASM for Tuesday October 16, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Oct 16 2018 01:10:19 CST No sudden loss of generation greater than 450 MW occurred on October 15, 2018. Operational Information Active
    Oct 15 2018 16:51:11 CST ERCOT has cancelled the following notice: At 3:25 PM on 10/15/2018, 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
    Oct 15 2018 15:43:14 CST ERCOT Emergency Base Points are Disabled Operational Information Cancelled
    Oct 15 2018 15:42:26 CST ERCOT Emergency Base Points are Enabled Operational Information Active
    Oct 15 2018 10:19:17 CST At 3:25 PM on 10/15/2018, 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
    Oct 15 2018 08:46:12 CST The Daily RSASM for Monday October 15, 2018 will not be occurring due to zero participating QSEs Operational Information Active
    Oct 15 2018 06:32:23 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Oct 15 2018 06:29:43 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Oct 15 2018 00:33:25 CST No sudden loss of generation greater than 450 MW occurred on October 14, 2018. Operational Information Active
    Oct 14 2018 08:48:47 CST The Daily RSASM for Sunday October 14, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 14 2018 00:06:17 CST No sudden loss of generation greater than 450 MW occurred on October 13, 2018. Operational Information Active
    Oct 13 2018 08:47:52 CST The Daily RSASM for Saturday October 13, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 13 2018 01:43:54 CST No sudden loss of generation greater than 450 MW occurred on October 12, 2018. Operational Information Active
    Oct 12 2018 08:48:26 CST The Daily RSASM for Friday October 12, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 12 2018 04:19:12 CST ERCOT will be working from the Primary Control Center until further notice, use the OPX numbers for Taylor. Operational Information Active
    Oct 12 2018 04:18:07 CST ERCOT has cancelled the following notice: ERCOT is working from alternate control center. Operational Information Cancelled
    Oct 12 2018 02:27:56 CST ERCOT has cancelled the following notice: ERCOT has been notified that the Railroad DC Tie has been derated to 150 MW due to relay issues until further notice. Operational Information Cancelled
    Oct 12 2018 00:19:12 CST No sudden loss of generation greater than 450 MW occurred on October 11, 2018. Operational Information Active
    Oct 11 2018 23:50:34 CST ERCOT has been notified that the Railroad DC Tie has been derated to 150 MW due to relay issues until further notice. Operational Information Active
    Oct 11 2018 23:43:22 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 11 2018 16:23:08 CST ERCOT is working from alternate control center. Operational Information Active
    Oct 11 2018 15:14:43 CST ERCOT has cancelled the following notice: AEP239965 is a one day outage on the Eagle Pass City (EAGLE_PS) 138kV circuit breaker 7395 and the associated disconnects starting on Wednesday 10/10/18 at 08:00 until 16:00 for relay testing. Operational Information Cancelled
    Oct 11 2018 15:14:28 CST ERCOT has cancelled the following notice: AEP240356/Group: 060940 is a continuous outage on DC-EGPS (DC_EGPS) 138kV circuit breakers (3015) and disconnects (3014, 3015 and 3016) on Monday 10/08/18 at 08:30 until Friday 10/12/18 at 16:30 for annual maintenance. Operational Information Cancelled
    Oct 11 2018 10:25:16 CST ERCOT has cancelled the following notice: The Eagle Pass DC Tie will be unavailable from 12:00 10/08/2018 through 16:00 10/12/2018 due to a planned outage. Operational Information Cancelled
    Oct 11 2018 08:50:49 CST The Daily RSASM for Thursday October 11, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 11 2018 06:54:28 CST DC Tie Outage: The East DC Tie will be unavailable from 08:00 10/12/2018 through 15:00 10/19/2018 due to a planned outage. Operational Information Active
    Oct 11 2018 06:51:51 CST ERCOT has cancelled the following notice: The East DC Tie will be unavailable from 10:12 10/12/2018 through 10:19 10/19/2018 due to a planned outage. Operational Information Cancelled
    Oct 11 2018 06:34:19 CST DC Tie Outage: The East DC Tie will be unavailable from 10:12 10/12/2018 through 10:19 10/19/2018 due to a planned outage. Operational Information Active
    Oct 11 2018 06:28:57 CST ERCOT has cancelled the following notice: AEP240366 is a continuous outage on the Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit DC_E1 starting on Friday 10/12/18 at 08:00 until Monday 10/15/18 at 07:59 for fall maintenance outage. DC_E will be unavailable. Operational Information Cancelled
    Oct 11 2018 03:19:39 CST ERCOT has cancelled the following notice: ERCOT will execute a SASM at 02:30 for operating day October 11, 2018 for HE (6, 7, 8, 10, 11) for (RegDn) HE (5-12) for (RegUp). RegDn: HE6 12.5mw, HE7 1.5mw, HE8 1.3mw, HE10 27.5mw, HE11 1.8mw RegUP: HE5 2.2mw, HE6 9.1mw, HE7 13.7mw, HE8 6.3mw, HE9 6.8mw, HE10 8.3mw, HE11 7.2mw, HE12 7.5mw Operational Information Cancelled
    Oct 11 2018 02:13:44 CST ERCOT will execute a SASM at 02:30 for operating day October 11, 2018 for HE (6, 7, 8, 10, 11) for (RegDn) HE (5-12) for (RegUp). RegDn: HE6 12.5mw, HE7 1.5mw, HE8 1.3mw, HE10 27.5mw, HE11 1.8mw RegUP: HE5 2.2mw, HE6 9.1mw, HE7 13.7mw, HE8 6.3mw, HE9 6.8mw, HE10 8.3mw, HE11 7.2mw, HE12 7.5mw Operational Information Active
    Oct 11 2018 00:49:53 CST No sudden loss of generation greater than 450 MW occurred on October 10, 2018. Operational Information Active
    Oct 10 2018 08:47:18 CST The Daily RSASM for Wednesday, October 10, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 10 2018 00:16:57 CST No sudden loss of generation greater than 450 MW occurred on October 9, 2018. Operational Information Active
    Oct 09 2018 08:48:41 CST The Daily RSASM for Tuesday, October 9, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 09 2018 00:41:07 CST No sudden loss of generation greater than 450 MW occurred on October 8, 2018. Operational Information Active
    Oct 08 2018 11:51:18 CST DC Tie Outage: The Eagle Pass DC Tie will be unavailable from 12:00 10/08/2018 through 16:00 10/12/2018 due to a planned outage. Operational Information Active
    Oct 08 2018 10:09:37 CST AEP240366 is a continuous outage on the Monticello SES (MNSES) to Welsh (WLSH) 345kV circuit DC_E1 starting on Friday 10/12/18 at 08:00 until Monday 10/15/18 at 07:59 for fall maintenance outage. DC_E will be unavailable. Operational Information Active
    Oct 08 2018 08:50:06 CST The Daily RSASM for Monday, October 8, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 08 2018 06:44:03 CST The Barney Davis RAS was taken out of service. Operational Information Active
    Oct 08 2018 01:05:55 CST No sudden loss of generation greater than 450 MW occurred on October 7, 2018. Operational Information Active
    Oct 08 2018 01:04:56 CST No sudden loss of generation greater than 450 MW occurred on October 6, 2018. Operational Information Active
    Oct 07 2018 08:48:42 CST The Daily RSASM for Sunday, October 7, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 06 2018 08:46:38 CST The Daily RSASM for Saturday, October 6, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 06 2018 01:36:31 CST ERCOT Responsive Reserve Has Been Recalled Operational Information Cancelled
    Oct 06 2018 01:30:47 CST ERCOT Responsive Reserve Has Been Deployed Operational Information Active
    Oct 06 2018 01:05:53 CST No sudden loss of generation greater than 450 MW occurred on October 5, 2018. Operational Information Active
    Oct 05 2018 15:36:06 CST The Barney Davis RAS is back in service. Operational Information Active
    Oct 05 2018 08:46:39 CST The Daily RSASM for Friday, October 5, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 05 2018 00:00:58 CST No sudden loss of generation greater than 450 MW occurred on October 4, 2018. Operational Information Active
    Oct 04 2018 19:14:01 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Cancelled
    Oct 04 2018 08:48:36 CST The Daily RSASM for Thursday, October 4, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 04 2018 01:09:41 CST Capacity Insufficiency: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 14:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Active
    Oct 04 2018 00:12:57 CST No sudden loss of generation greater than 450 MW occurred on October 3, 2018. Operational Information Active
    Oct 03 2018 22:34:23 CST ERCOT will execute a SASM at 23:05 for operating day October 4, 2018 for HE09 for 9.9 MW REGUP. Operational Information Active
    Oct 03 2018 16:22:26 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for TULE CANYON/TESLA 345kv outage. Operational Information Cancelled
    Oct 03 2018 16:15:13 CST AEP240356/Group: 060940 is a continuous outage on DC-EGPS (DC_EGPS) 138kV circuit breakers (3015) and disconnects (3014, 3015 and 3016) on Monday 10/08/18 at 08:30 until Friday 10/12/18 at 16:30 for annual maintenance. Operational Information Active
    Oct 03 2018 15:41:45 CST ERCOT is taking manual actions to pre-posture for TULE CANYON/TESLA 345kv outage. Operational Information Active
    Oct 03 2018 15:41:34 CST ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for TULE CANYON/TESLA 3445kv outage. Operational Information Cancelled
    Oct 03 2018 15:41:17 CST ERCOT is taking manual actions to pre-posture for TULE CANYON/TESLA 3445kv outage. Operational Information Active
    Oct 03 2018 13:33:03 CST AEP239965 is a one day outage on the Eagle Pass City (EAGLE_PS) 138kV circuit breaker 7395 and the associated disconnects starting on Wednesday 10/10/18 at 08:00 until 16:00 for relay testing. Operational Information Active
    Oct 03 2018 08:47:34 CST The Daily RSASM for Wednesday October 3, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 03 2018 00:38:59 CST No sudden loss of generation greater than 450 MW occurred on October 2, 2018. Operational Information Active
    Oct 02 2018 20:50:42 CST ERCOT will execute a SASM at 21:35 for operating day 10/3/2018 for HE16 for 9.9 MW REGUP and 4.8 MW REGDN. Operational Information Active
    Oct 02 2018 14:04:45 CST At 14:00 , ERCOT is canceling the Advisory for the delay of DAM. DAM is now complete DRUC will begin at 15:00 . Operational Information Active
    Oct 02 2018 13:24:10 CST ERCOT has postponed the deadline for the posting of the DAM Solution for Operating Day October 3, 2018 due to long running solution. Advisory Active
    Oct 02 2018 08:49:05 CST The Daily RSASM for Tuesday October 2, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 02 2018 04:26:34 CST On 10/2 at 04:25 ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
    Oct 02 2018 00:12:07 CST No sudden loss of generation greater than 450 MW occurred on October 1, 2018. Operational Information Active
    Oct 01 2018 18:01:46 CST ERCOT has cancelled the following notice: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 15:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Cancelled
    Oct 01 2018 08:47:22 CST The Daily RSASM for Monday October 1, 2018 will not be occurring due to zero participating QSEs. Operational Information Active
    Oct 01 2018 03:50:13 CST Capacity Insufficiency: ERCOT is issuing an OCN for a projected reserve capacity shortage for hours ending 15:00 through 19:00. ERCOT is requesting all QSE's to update their COPs. OCN Active