MIS LOG IN

Public Notices

This section contains public market notifications required by protocols as well as other market messages ERCOT may post for market transparency. ERCOT began archiving public notices November 3, 2011.

Dec 2023 Jan 2024 Feb 2024 Mar 2024 Apr 2024 May 2024
Date & Time Notice Type Status
May 17, 2024 10:30:01 AM At 10:30, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Monday May 20, 2024, HE 20 through Wednesday May 22, 2024, HE 22 based on changed conditions. At this time, ERCOT does not seek additional capacity and will not be issuing an OSA. ERCOT has posted an updated AAN Planning Assessment for reference. OCN Active
May 17, 2024 8:47:17 AM The Daily RSASM for 05/17/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 17, 2024 5:52:43 AM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
May 17, 2024 5:52:23 AM ERCOT Emergency Base Points are Enabled Operational Information Active
May 17, 2024 4:44:51 AM ERCOT Emergency Base Points are Disabled Operational Information Cancelled
May 17, 2024 4:42:19 AM ERCOT Emergency Base Points are Enabled Operational Information Active
May 17, 2024 1:12:49 AM No sudden loss of generation greater than 450 MW occurred on May 16, 2024. Operational Information Active
May 16, 2024 7:34:59 PM ERCOT has cancelled the following notice: At 3:25 PM on 05/16/2024, 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
May 16, 2024 2:00:00 PM ERCOT has cancelled the following notice: ERCOT is taking manual actions for congestion in South Texas. Operational Information Cancelled
May 16, 2024 12:30:17 PM At 12:30, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Friday May 17, 2024, HE 20 through Saturday May 18, 2024, HE 21 based on changed conditions. At this time, ERCOT does not seek additional capacity and will not be issuing an OSA. ERCOT has posted an updated AAN Planning Assessment for reference. OCN Active
May 16, 2024 10:30:00 AM At 10:30, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Monday May 20, 2024, HE 20 through Wednesday May 22, 2024, HE 22. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek up to 5265 MW from an OAE and then make the OSA. On Friday May 17, 2024, at 10:30. ERCOT will execute an OAE if deemed necessary. Please notify ERCOT by email aan@ercot.com if a specific resource cannot be considered in the OAE. OCN Active
May 16, 2024 10:24:21 AM At 3:25 PM on 05/16/2024, 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
May 16, 2024 10:07:12 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 09:45 for operating day 05/16/2024 for 28.4 MW RRS HE 12-13. Operational Information Cancelled
May 16, 2024 9:09:33 AM ERCOT will execute a SASM at 09:45 for operating day 05/16/2024 for 28.4 MW RRS HE 12-13. Operational Information Active
May 16, 2024 8:46:28 AM The Daily RSASM for 05/16/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 16, 2024 5:36:50 AM ERCOT is taking manual actions for congestion in South Texas. Operational Information Active
May 16, 2024 3:39:14 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [01:45] for operating day [05/16/24] For RRS: HE5 – HE9 18.5MW for each hour Operational Information Cancelled
May 16, 2024 1:06:25 AM ERCOT will execute a SASM at [01:45] for operating day [05/16/24] For RRS: HE5 – HE9 18.5MW for each hour Operational Information Active
May 16, 2024 12:04:59 AM No sudden loss of generation greater than 450 MW occurred on May 15, 2024. Operational Information Active
May 15, 2024 12:30:05 PM At 12:30, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Friday May 17, 2024, HE 20 through Saturday May 18, 2024, HE 21. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek up to 3377 MW from an OAE and then make the OSA. On Thursday May 16, 2024, at 12:30. ERCOT will execute an OAE if deemed necessary. Please notify ERCOT by email aan@ercot.com if a specific resource cannot be considered in the OAE. OCN Active
May 15, 2024 8:48:38 AM The Daily RSASM for Wednesday, May 15, 2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 15, 2024 12:14:47 AM No sudden loss of generation greater than 450 MW occurred on May 14, 2024. Operational Information Active
May 14, 2024 12:05:08 PM Update to the Market Price Correction for RTM notice on May 13, 2024 3:31 PM: On May 13, 2024, ERCOT implemented a fix in MMS to resolve the issue impacting 5-minute RTORPAs and 15-minute RTSPPs/RTRMPRs/RTRSVPORs. ERCOT has identified a need to perform a price correction for the Real-Time Settlement Intervals 00:30, 04:00 - 04:15, 05:15 – 05:30, 06:30 – 7:30 on OD 05/13/2024 before the fix was implemented. The deadline for posting corrected price for OD 5/13/2024 is 5/15/2024 at 4:00 PM, but may be posted sooner. Alert Active
May 14, 2024 8:48:03 AM The Daily RSASM for Tuesday, May 14, 2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 14, 2024 12:04:36 AM On 05/13/2024, a sudden loss of generation occurred at 03:44:16 totaling 576 MW. Frequency declined to 59.927 Hz, ERCOT load was 41,265 MW. Operational Information Active
May 13, 2024 3:31:32 PM Market price correction for SCED. ERCOT has identified a need to perform a price correction for the Real-Time Settlement Intervals 18:00 – 22:30 on OD 05/10/2024 and Real-Time Settlement Intervals 00:15, 02:30, 19:30 – 21:15 on OD 05/11/2024. This is due to an issue in MMS causing 5-minute RTORPAs and 15-minute RTSPPs/RTRMPRs/RTRSVPORs to be incorrect. Price Correction data will be posted to the ERCOT MIS by 16:00 on 05/14/2024. Alert Active
May 13, 2024 8:46:51 AM The Daily RSASM for Monday, May 13, 2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 13, 2024 1:00:18 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/13/2024 01:00 CPT. Operational Information Cancelled
May 13, 2024 12:00:08 AM On 5/12/2024 a sudden loss of generation occurred at 02:51 totaling 510 MW. Frequency declined to 59.918 Hz, ERCOT load was 40,462 MW. Operational Information Active
May 12, 2024 5:55:07 PM The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/13/2024 01:00 CPT. Operational Information Active
May 12, 2024 5:53:35 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/12/2024 18:59 CPT. Operational Information Cancelled
May 12, 2024 8:56:34 AM The Daily RSASM for 05/12/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 12, 2024 1:00:52 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until 5/12/2024 [01:00] CPT. Advisory Cancelled
May 12, 2024 12:00:07 AM No sudden loss of generation greater than 450 MW occurred on May 11, 2024. Operational Information Active
May 11, 2024 11:47:51 PM Advisory issued for a geomagnetic disturbance of [K-7] until 5/12/2024 [01:00] CPT. Advisory Active
May 11, 2024 7:01:01 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [19:00] CPT. Advisory Cancelled
May 11, 2024 4:57:31 PM Advisory issued for a geomagnetic disturbance of [K-7] until [19:00] CPT. Advisory Active
May 11, 2024 4:00:03 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [16:00] CPT. Advisory Cancelled
May 11, 2024 2:53:27 PM Advisory issued for a geomagnetic disturbance of [K-7] until [16:00] CPT. Advisory Active
May 11, 2024 1:10:52 PM The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/12/2024 18:59 CPT. Operational Information Active
May 11, 2024 1:10:37 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/12/2024 18:59 CPT. Operational Information Cancelled
May 11, 2024 1:10:13 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [13:00] CPT. Advisory Cancelled
May 11, 2024 1:02:06 PM The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/12/2024 18:59 CPT. Operational Information Active
May 11, 2024 1:01:22 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/11/2024 18:59 CPT. Operational Information Cancelled
May 11, 2024 12:04:51 PM Advisory issued for a geomagnetic disturbance of [K-8] until [13:00] CPT. Advisory Active
May 11, 2024 12:04:23 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [13:00] CPT. Advisory Cancelled
May 11, 2024 10:58:46 AM Advisory issued for a geomagnetic disturbance of [K-7] until [13:00] CPT. Advisory Active
May 11, 2024 10:07:02 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [10:00] CPT. Advisory Cancelled
May 11, 2024 8:51:24 AM The Daily RSASM for 05/11/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 11, 2024 7:56:29 AM Advisory issued for a geomagnetic disturbance of [K-8] until [10:00] CPT. Advisory Active
May 11, 2024 7:54:56 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [10:00] CPT. Advisory Cancelled
May 11, 2024 7:47:13 AM Advisory issued for a geomagnetic disturbance of [K-7] until [10:00] CPT. Advisory Active
May 11, 2024 7:07:03 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [07:00] CPT. Advisory Cancelled
May 11, 2024 6:35:06 AM The Space Weather Prediction Center has extended the GMD Warning of K-7 or greater until 05/11/2024 18:59 CPT. Operational Information Active
May 11, 2024 6:31:21 AM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K-7 until 05/11/2024 [07:00] CPT. Operational Information Cancelled
May 11, 2024 5:05:04 AM Advisory issued for a geomagnetic disturbance of [K-8] until [07:00] CPT. Advisory Active
May 11, 2024 5:04:33 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [04:00] CPT. Advisory Cancelled
May 11, 2024 5:04:22 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [07:00] CPT. Advisory Cancelled
May 11, 2024 5:03:29 AM Advisory issued for a geomagnetic disturbance of [K-8] until [04:00] CPT. Advisory Active
May 11, 2024 4:57:07 AM Advisory issued for a geomagnetic disturbance of [K-7] until [07:00] CPT. Advisory Active
May 11, 2024 4:03:52 AM ERCOT has cancelled the following notice: Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until 5/11/2024 [04:00] CPT. Advisory Cancelled
May 11, 2024 2:20:15 AM Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until 5/11/2024 [04:00] CPT. Advisory Active
May 11, 2024 2:19:21 AM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [04:00] CPT. Advisory Cancelled
May 11, 2024 2:02:26 AM Advisory issued for a geomagnetic disturbance of [K-7] until [04:00] CPT. Advisory Active
May 11, 2024 1:04:52 AM ERCOT has cancelled the following notice: Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until 5/11/2024 [01:00] CPT. Advisory Cancelled
May 11, 2024 12:12:03 AM No sudden loss of generation greater than 450 MW occurred on May 10, 2024. Operational Information Active
May 10, 2024 10:53:19 PM Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until 5/11/2024 [01:00] CPT. Advisory Active
May 10, 2024 10:52:42 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until 5/11/2024 [01:00] CPT. Advisory Cancelled
May 10, 2024 10:37:11 PM Advisory issued for a geomagnetic disturbance of [K-7] until 5/11/2024 [01:00] CPT. Advisory Active
May 10, 2024 10:14:26 PM ERCOT has cancelled the following notice: Advisory issued due to an increase of the geomagnetic disturbance to a [K-9] until [22:00] CPT. Advisory Cancelled
May 10, 2024 8:15:21 PM Advisory issued due to an increase of the geomagnetic disturbance to a [K-9] until [22:00] CPT. Advisory Active
May 10, 2024 8:14:49 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [22:00] CPT. Advisory Cancelled
May 10, 2024 7:53:36 PM Advisory issued for a geomagnetic disturbance of [K-7] until [22:00] CPT. Advisory Active
May 10, 2024 7:30:22 PM ERCOT has cancelled the following notice: Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until [19:00] CPT. Advisory Cancelled
May 10, 2024 7:30:10 PM ERCOT has cancelled the following notice: Advisory issued due to an increase of the geomagnetic disturbance to a [K-9] until [19:00] CPT. Advisory Cancelled
May 10, 2024 7:01:41 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [19:00] CPT. Advisory Cancelled
May 10, 2024 7:00:49 PM The Space Weather Prediction Center has issued a GMD Warning of K-7 until 05/11/2024 [07:00] CPT. Operational Information Active
May 10, 2024 6:59:38 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K-7 until 05/11/2024 [07:00] CPT. OCN Cancelled
May 10, 2024 6:57:54 PM The Space Weather Prediction Center has issued a GMD Warning of K-7 until 05/11/2024 [07:00] CPT. OCN Active
May 10, 2024 6:44:51 PM Advisory issued due to an increase of the geomagnetic disturbance to a [K-9] until [19:00] CPT. Advisory Active
May 10, 2024 5:03:59 PM Advisory issued due to an increase of the geomagnetic disturbance to a [K-8] until [19:00] CPT. Advisory Active
May 10, 2024 4:40:15 PM Advisory issued for a geomagnetic disturbance of [K-7] until [19:00] CPT. Advisory Active
May 10, 2024 4:00:01 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [16:00]. Advisory Cancelled
May 10, 2024 3:08:16 PM The Space Weather Prediction Center has issued a GMD Warning of K-7 until 05/10/2024 18:59]. Operational Information Active
May 10, 2024 2:13:13 PM Advisory issued for a geomagnetic disturbance of [K-8] until [16:00]. Advisory Active
May 10, 2024 2:12:40 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [16:00]. Advisory Cancelled
May 10, 2024 1:42:59 PM Advisory issued for a geomagnetic disturbance of [K-7] until [16:00]. Advisory Active
May 10, 2024 1:42:12 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-8] until [18:59]. Advisory Cancelled
May 10, 2024 12:59:42 PM Advisory issued for a geomagnetic disturbance of [K-8] until [18:59]. Advisory Active
May 10, 2024 12:59:26 PM ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of [K-7] until [18:59]. Advisory Cancelled
May 10, 2024 12:51:11 PM Advisory issued for a geomagnetic disturbance of [K-7] until [18:59]. Advisory Active
May 10, 2024 11:27:32 AM Market price correction for SCED. This notification is an update to the message sent at 10:34 on 05/09/2024 regarding Real-Time Market prices under investigation. ERCOT has identified a need to perform a price correction for the Real-Time Settlement Intervals 16:00 through 22:00 on Operating Day (OD) 05/08/2024. This was due to an MMS bug causing incorrect calculations for 15-minute RTSPPs/RTRMPRs/RTRSVPORs and 5-minute RTORPAs. There is also an underlying issue with the ORDC price adder logic that contributed to the impacted calculations during SCED intervals 20:10 and 20:15. Price Correction data will be posted to the ERCOT MIS by 16:00 on 05/10/2024. Alert Active
May 10, 2024 8:49:52 AM The Daily RSASM for 05/10/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 10, 2024 6:28:44 AM ERCOT is working from primary control center. Operational Information Active
May 10, 2024 6:27:08 AM 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
May 10, 2024 12:06:21 AM No sudden loss of generation greater than 450 MW occurred on May 09, 2024. Operational Information Active
May 9, 2024 11:18:11 PM ERCOT has cancelled the following notice: The DC_L (Laredo VFT) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Cancelled
May 9, 2024 11:18:03 PM ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Cancelled
May 9, 2024 10:22:59 PM ERCOT has cancelled the following notice: A Transmission Advisory has been issued for the South Texas Import Interface. Advisory Cancelled
May 9, 2024 10:22:16 PM ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for the South Texas Import Interface. Emergency Notice Cancelled
May 9, 2024 10:08:58 PM At 22:08, All Non-Spin has been recalled. Operational Information Active
May 9, 2024 10:08:18 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2024-05-09 22:08:18, END_TIME: 2024-05-09 22:08:18, DURATION: 0 Hrs 0 Mins.; Operational Information
May 9, 2024 4:01:36 PM ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. Operational Information Active
May 9, 2024 2:34:09 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 90.0, BEGIN_TIME: 2024-05-09 14:34:09, END_TIME: 2024-05-09 23:59:00, DURATION: 9 Hrs 24 Mins.; Operational Information
May 9, 2024 1:43:35 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 162.0, BEGIN_TIME: 2024-05-09 13:43:35, END_TIME: 2024-05-09 23:59:00, DURATION: 10 Hrs 15 Mins.; Operational Information
May 9, 2024 1:18:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 162.0, BEGIN_TIME: 2024-05-09 13:18:01, END_TIME: 2024-05-09 23:59:00, DURATION: 10 Hrs 40 Mins.; Operational Information
May 9, 2024 1:03:56 PM Transmission Emergency Notice has been issued for the South Texas Import Interface. Emergency Notice Active
May 9, 2024 1:03:25 PM ERCOT has cancelled the following notice: Transmission Emergency Notice has been issued for the South Texas Import Interface. Advisory Cancelled
May 9, 2024 12:42:45 PM The DC_R (Railroad) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Active
May 9, 2024 12:42:07 PM The DC_L (Laredo VFT) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Active
May 9, 2024 12:32:50 PM At 12:23 approximately 164 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
May 9, 2024 12:27:47 PM Transmission Emergency Notice has been issued for the South Texas Import Interface. Advisory Active
May 9, 2024 12:23:19 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 164.0, BEGIN_TIME: 2024-05-09 12:23:19, END_TIME: 2024-05-09 23:59:00, DURATION: 11 Hrs 35 Mins.; Operational Information
May 9, 2024 12:21:59 PM A Transmission Advisory has been issued for the South Texas Import Interface. Advisory Active
May 9, 2024 10:34:57 AM Notification of Prices Under Investigation. ERCOT has discovered a potential issue with the ORDC price adder floors that affected Real-Time Market Prices on Operating Day (OD) 05/08/2024 during intervals 20:10 and 20:15. ERCOT is investigating the potential impact to Real-Time Market prices for this event and a follow-up Market Notice will be issued once ERCOT has more information. If a price correction is needed for OD 05/08/2024, the posting deadline is 16:00 on 05/10/2024. Alert Active
May 9, 2024 8:52:39 AM The Daily RSASM for 05/09/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 9, 2024 4:00:38 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 03:45 for operating day 05/09/24 for HE06-09 for 19.1 MW RRS Operational Information Cancelled
May 9, 2024 3:24:47 AM ERCOT has cancelled the following notice: The DC_L (Laredo) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to an actual or anticipated emergency in the CENACE (Mexico) control area. DC Tie Curtailment Notice Cancelled
May 9, 2024 3:24:27 AM ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to an actual or anticipated emergency in the CENACE (Mexico) control area. DC Tie Curtailment Notice Cancelled
May 9, 2024 3:14:50 AM ERCOT will execute a SASM at 03:45 for operating day 05/09/24 for HE06-09 for 19.1 MW RRS Operational Information Active
May 9, 2024 12:07:47 AM No sudden loss of generation greater than 450 MW occurred on May 08, 2024. Operational Information Active
May 8, 2024 10:03:08 PM ERCOT has cancelled the following notice: At 12:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday May 7, 2024, HE 1700 through Wednesday May 8, 2024, HE 2200. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek up to 6,060 MW from an OAE and then make the OSA. On Friday May 3, 2024, at 12:00. ERCOT will execute an OAE if deemed necessary. Please notify ERCOT by email aan@ercot.com if a specific resource cannot be considered in the OAE. OCN Cancelled
May 8, 2024 10:00:08 PM ERCOT has cancelled the following notice: OCN issued for the predicted extreme hot weather event for the ERCOT Region Wednesday, May 08, 2024. Operational Information Cancelled
May 8, 2024 9:00:38 PM At 21:00, All Non-Spin has been recalled. Operational Information Active
May 8, 2024 9:00:16 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2024-05-08 21:00:16, END_TIME: 2024-05-08 21:00:16, DURATION: 0 Hrs 0 Mins.; Operational Information
May 8, 2024 9:00:06 PM ERCOT has cancelled the following notice: ERCOT issued a Watch for a projected reserve capacity shortage with no market solution available for HE 20 – 21, which causes a risk for an EEA event. Watch Cancelled
May 8, 2024 8:48:16 PM ERCOT ECRS HAS BEEN RECALLED Operational Information Cancelled
May 8, 2024 8:33:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 360.7, BEGIN_TIME: 2024-05-08 21:00:00, END_TIME: 2024-05-08 23:59:59, DURATION: 2 Hrs 59 Mins.; Operational Information
May 8, 2024 7:33:01 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 415.9, BEGIN_TIME: 2024-05-08 20:00:00, END_TIME: 2024-05-08 23:59:59, DURATION: 3 Hrs 59 Mins.; Operational Information
May 8, 2024 7:11:14 PM The DC_L (Laredo) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to an actual or anticipated emergency in the CENACE (Mexico) control area. DC Tie Curtailment Notice Active
May 8, 2024 7:10:22 PM The DC_R (Railroad) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to an actual or anticipated emergency in the CENACE (Mexico) control area. DC Tie Curtailment Notice Active
May 8, 2024 7:07:04 PM ERCOT ECRS HAS BEEN DEPLOYED Operational Information Active
May 8, 2024 6:49:32 PM At 18:48 approximately 498 MW of Non-Spin has been deployed, anticipated duration is 23:59. Operational Information Active
May 8, 2024 6:48:41 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 498.3, BEGIN_TIME: 2024-05-08 18:48:41, END_TIME: 2024-05-08 23:59:59, DURATION: 5 Hrs 11 Mins.; Operational Information
May 8, 2024 9:30:02 AM ERCOT issued a Watch for a projected reserve capacity shortage with no market solution available for HE 20 – 21, which causes a risk for an EEA event. Watch Active
May 8, 2024 8:47:18 AM The Daily RSASM for 05/08/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 8, 2024 7:57:47 AM The DC_R (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
May 8, 2024 5:18:34 AM ERCOT has been notified that the RAILROAD DC Tie has been derated to 150 MW Import/Export due to station 1 trip until 5/29/24@1300. Operational Information Active
May 8, 2024 12:07:14 AM No sudden loss of generation greater than 450 MW occurred on May 07, 2024. Operational Information Active
May 8, 2024 12:04:22 AM Due to the DC_R (Railroad) Tie Station 1 trip at 21:58 on 05/07/24, the DC_R (Railroad) Tie remains derated to 150 MW Import/Export until further notice. Operational Information Active
May 7, 2024 10:07:15 PM The DC_R (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
May 7, 2024 3:30:20 PM ERCOT has cancelled the following notice: The DC_N (North) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Cancelled
May 7, 2024 12:58:51 PM The DC_N (North) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. DC Tie Curtailment Notice Active
May 7, 2024 10:45:01 AM OCN issued for the predicted extreme hot weather event for the ERCOT Region Wednesday, May 08, 2024. Operational Information Active
May 7, 2024 8:47:49 AM The Daily RSASM for 05/07/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 7, 2024 12:21:15 AM No sudden loss of generation greater than 450 MW occurred on May 06, 2024. Operational Information Active
May 6, 2024 8:46:49 AM The Daily RSASM for 05/06/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 6, 2024 12:54:40 AM No sudden loss of generation greater than 450 MW occurred on May 05, 2024. Operational Information Active
May 5, 2024 5:51:58 PM ERCOT has cancelled the following notice: The Eskota RAS has been taken out of service and removed from RTCA. Operational Information Cancelled
May 5, 2024 10:58:50 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [1045] for operating day 05/05/2024 for HE [13 through 24] for 7 MW of RRS Operational Information Cancelled
May 5, 2024 10:12:21 AM ERCOT will execute a SASM at [1045] for operating day 05/05/2024 for HE [13 through 24] for 7 MW of RRS Operational Information Active
May 5, 2024 8:46:33 AM The Daily RSASM for 05/05/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 5, 2024 12:17:17 AM No sudden loss of generation greater than 450 MW occurred on May 04, 2024. Operational Information Active
May 4, 2024 3:51:03 PM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [1535] for operating day 05/04/2024 for HE [18 through 21] for 1.1MW of ECRS. Operational Information Cancelled
May 4, 2024 3:04:43 PM ERCOT will execute a SASM at [1535] for operating day 05/04/2024 for HE [18 through 21] for 1.1MW of ECRS. Operational Information Active
May 4, 2024 9:52:55 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [0935] for operating day 05/04/2024 for HE [12 through 14] for 1.9MW of ECRS Operational Information Cancelled
May 4, 2024 9:08:24 AM ERCOT will execute a SASM at [0935] for operating day 05/04/2024 for HE [12 through 14] for 1.9MW of ECRS Operational Information Active
May 4, 2024 9:07:59 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [1035] for operating day 05/04/2024 for HE [12 through 14] for 1.9MW of ECRS Operational Information Cancelled
May 4, 2024 9:06:45 AM ERCOT will execute a SASM at [1035] for operating day 05/04/2024 for HE [12 through 14] for 1.9MW of ECRS Operational Information Active
May 4, 2024 9:05:09 AM The Daily RSASM for 05/04/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 4, 2024 8:50:38 AM The Daily RSASM for 05/04/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 4, 2024 12:13:19 AM No sudden loss of generation greater than 450 MW occurred on May 03, 2024. Operational Information Active
May 4, 2024 12:10:28 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at [23:40] for operating day [5/4/24] this is for ECRS for [HE 3 – 1.1 MWs, HE 5 – 1.2 MWs, HE 8 – 1.4 MWs, HE 9 – 1.9 MWs, HE 10 & 11 - 1.6 MWs each hour, HE 12 & 13 – 1.4 MWs each hour, HE 14-16 – 1.6 MWs each hour, HE 17 & 18 – 1.9 MWs each hour, HE 19 – 1.5 MWs, HE 20 – 1.2 MWs, HE 21 & 22 – 1.3 MWs each hour]; Non-spin for [HE 2 – 2.2 MWs, HE 3-6 – 2.9 MWs each hour, HE 7 & 8 – 3.5 MWs each hour, HE 9 – 3.3 MWs, HE 10 – 3.2 MWs, HE 11 – 3 MWs, HE 12-14 – 2.9 MWs each hour, HE 15-18 – 2 MWs each hour, HE 19-22 – 2.3 MWs each hour, HE 23 – 2.1 MWs, HE 24 – 2.2 MWs]; RRS for [HE 2 – 2.2 MWs, HE 3 – 2.3 MWs, HE 4-6 – 2.4 MWs for each hour, HE 7 & 8 – 2.1 MWs each hour, HE 9 – 2 MWs, HE 10 – 1.9 MWs, HE 11 & 12 – 1.7 MWs each hour, HE 13-15 – 1.6 MWs each hour, HE 16 & 17 – 1.5 MWs each hour, HE 18-22 – 1.6 MWs each hour, HE 23 – 1.9 MWs, and HE 24 – 2 MWs]. Operational Information Cancelled
May 3, 2024 11:11:41 PM ERCOT will execute a SASM at [23:40] for operating day [5/4/24] this is for ECRS for [HE 3 – 1.1 MWs, HE 5 – 1.2 MWs, HE 8 – 1.4 MWs, HE 9 – 1.9 MWs, HE 10 & 11 - 1.6 MWs each hour, HE 12 & 13 – 1.4 MWs each hour, HE 14-16 – 1.6 MWs each hour, HE 17 & 18 – 1.9 MWs each hour, HE 19 – 1.5 MWs, HE 20 – 1.2 MWs, HE 21 & 22 – 1.3 MWs each hour]; Non-spin for [HE 2 – 2.2 MWs, HE 3-6 – 2.9 MWs each hour, HE 7 & 8 – 3.5 MWs each hour, HE 9 – 3.3 MWs, HE 10 – 3.2 MWs, HE 11 – 3 MWs, HE 12-14 – 2.9 MWs each hour, HE 15-18 – 2 MWs each hour, HE 19-22 – 2.3 MWs each hour, HE 23 – 2.1 MWs, HE 24 – 2.2 MWs]; RRS for [HE 2 – 2.2 MWs, HE 3 – 2.3 MWs, HE 4-6 – 2.4 MWs for each hour, HE 7 & 8 – 2.1 MWs each hour, HE 9 – 2 MWs, HE 10 – 1.9 MWs, HE 11 & 12 – 1.7 MWs each hour, HE 13-15 – 1.6 MWs each hour, HE 16 & 17 – 1.5 MWs each hour, HE 18-22 – 1.6 MWs each hour, HE 23 – 1.9 MWs, and HE 24 – 2 MWs]. Operational Information Active
May 3, 2024 12:00:01 PM ERCOT has executed the OSA process due to a possible future Emergency Condition of reserve capacity deficiency projected for OSA Period Tuesday May 7, 2024, HE 1700 through Wednesday May 8, 2024, HE 2200. Outages not moved voluntarily prior to Friday May 3, 2024, at 12:00 will be considered an OSA.. OCN Active
May 3, 2024 11:48:57 AM ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie will be unavailable from 04/15/2024 07:45 through 05/03/2024 15:00 due to a planned outage. Operational Information Cancelled
May 3, 2024 8:46:34 AM The Daily RSASM for 05/03/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 3, 2024 2:15:06 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 01:45 for operating day 05/03/2024 for 8 MW ECRS HE 7-22 and 8.6 MW RRS HE 4-6 and HE 23-24. Operational Information Cancelled
May 3, 2024 1:09:06 AM ERCOT will execute a SASM at 01:45 for operating day 05/03/2024 for 8 MW ECRS HE 7-22 and 8.6 MW RRS HE 4-6 and HE 23-24. Operational Information Active
May 3, 2024 12:02:36 AM No sudden loss of generation greater than 450 MW occurred on May 02, 2024. Operational Information Active
May 2, 2024 10:00:01 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K-7 or greater until 05/03/2024 0300 UTC. Operational Information Cancelled
May 2, 2024 4:12:58 PM The Space Weather Prediction Center has issued a GMD Warning of K-7 or greater until 05/03/2024 0300 UTC. Operational Information Active
May 2, 2024 4:00:01 PM ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K-7 or greater until 05/02/2024 2100 UTC. Operational Information Cancelled
May 2, 2024 12:11:55 PM The Space Weather Prediction Center has issued a GMD Warning of K-7 or greater until 05/02/2024 2100 UTC. Operational Information Active
May 2, 2024 12:00:13 PM At 12:00, ERCOT issued an AAN due to a possible future Emergency Condition of reserve capacity deficiency beginning Tuesday May 7, 2024, HE 1700 through Wednesday May 8, 2024, HE 2200. ERCOT may Delay/Withdraw Approved or Accepted Resource Outages. ERCOT may seek up to 6,060 MW from an OAE and then make the OSA. On Friday May 3, 2024, at 12:00. ERCOT will execute an OAE if deemed necessary. Please notify ERCOT by email aan@ercot.com if a specific resource cannot be considered in the OAE. OCN Active
May 2, 2024 9:17:06 AM The Eskota RAS has been taken out of service and removed from RTCA. Operational Information Active
May 2, 2024 8:46:29 AM The Daily RSASM for 05/02/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 2, 2024 12:00:15 AM No sudden loss of generation greater than 450 MW occurred on May 01, 2024. Operational Information Active
May 1, 2024 9:00:02 PM ERCOT has cancelled the following notice: At 14:30, ERCOT has updated the AAN for a possible future Emergency Condition of reserve capacity deficiency beginning Monday April 29, 2024 at HE 20:00 through Wednesday May 1, 2024 at HE 21:00 based on changed conditions. At this time, ERCOT does not seek additional capacity and will not be issuing an OSA. ERCOT has posted an updated AAN Planning Assessment for reference. OCN Cancelled
May 1, 2024 1:27:25 PM ERCOT has identified the following MIS posting as delayed for Operating Day 05/02/2024: DAM Shift Factors. The report will be published after 13:30. Operational Information Active
May 1, 2024 8:49:42 AM The Daily RSASM for 05/01/2024 will not be occurring due to zero participating QSEs. Operational Information Active
May 1, 2024 2:10:12 AM ERCOT has cancelled the following notice: ERCOT will execute a SASM at 01:50 for operating day 05/01/2024 for 9 MW RRS HE 11, 10 MW RRS HE 12, 12 MW RRS HE 13, 7 MW RRS HE 14, 10 MW RRS HE 15, 9 MW RRS HE 16, and 3 MW RRS HE 23-24. Operational Information Cancelled
May 1, 2024 1:14:25 AM ERCOT will execute a SASM at 01:50 for operating day 05/01/2024 for 9 MW RRS HE 11, 10 MW RRS HE 12, 12 MW RRS HE 13, 7 MW RRS HE 14, 10 MW RRS HE 15, 9 MW RRS HE 16, and 3 MW RRS HE 23-24. Operational Information Active
May 1, 2024 12:03:22 AM No sudden loss of generation greater than 450 MW occurred on April 30, 2024. Operational Information Active