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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.
| Jan 2025 | Feb 2025 | Mar 2025 | Apr 2025 | May 2025 | Jun 2025 |
| Date & Time | Notice | Type | Status |
|---|---|---|---|
| Jun 26, 2025 8:45:57 AM | The Daily RSASM for 06/26/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 26, 2025 8:00:35 AM | ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from 06/25/2025 18:30 through 06/26/2025 08:00 due to a forced outage. | Operational Information | Cancelled |
| Jun 26, 2025 12:02:44 AM | No sudden loss of generation greater than 450 MW occurred on June 25, 2025. | Operational Information | Active |
| Jun 25, 2025 7:25:19 PM | The DC_N (North) DC Tie will be unavailable from 06/25/2025 18:30 through 06/26/2025 08:00 due to a forced outage. | Operational Information | Active |
| Jun 25, 2025 3:55:24 PM | Cancelled RUC commitment at timestamp 6/25/2025 15:53 for SCSES_UNIT2 for 6/25/2025 HE 17 due to unintended commitment. | Operational Information | Active |
| Jun 25, 2025 8:47:20 AM | The Daily RSASM for 06/25/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 25, 2025 12:01:37 AM | No sudden loss of generation greater than 450 MW occurred on June 24, 2025. | Operational Information | Active |
| Jun 24, 2025 8:47:21 AM | The Daily RSASM for 06/24/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 24, 2025 12:00:07 AM | No sudden loss of generation greater than 450 MW occurred on June 23, 2025. | Operational Information | Active |
| Jun 23, 2025 8:47:17 AM | The Daily RSASM for 06/23/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 23, 2025 12:01:13 AM | No sudden loss of generation greater than 450 MW occurred on June 22, 2025. | Operational Information | Active |
| Jun 22, 2025 8:46:22 AM | The Daily RSASM for 06/22/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 22, 2025 12:01:40 AM | No sudden loss of generation greater than 450 MW occurred on June 21, 2025. | Operational Information | Active |
| Jun 21, 2025 8:46:09 AM | The Daily RSASM for 06/21/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 21, 2025 12:01:59 AM | No sudden loss of generation greater than 450 MW occurred on June 20, 2025. | Operational Information | Active |
| Jun 20, 2025 8:46:36 AM | The Daily RSASM for 06/20/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 20, 2025 12:00:39 AM | No sudden loss of generation greater than 450 MW occurred on June 19, 2025. | Operational Information | Active |
| Jun 19, 2025 8:47:47 AM | The Daily RSASM for 06/19/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 19, 2025 12:13:08 AM | No sudden loss of generation greater than 450 MW occurred on June 18, 2025. | Operational Information | Active |
| Jun 18, 2025 8:46:00 AM | The Daily RSASM for 06/18/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 18, 2025 12:31:19 AM | On June 17, 2025, a sudden loss of generation occurred at 16:19 totaling 455 MW. Frequency declined to 59.951 Hz, ERCOT load was 76,200 MW. | Operational Information | Active |
| Jun 17, 2025 4:14:57 PM | The minimum monthly Ancillary Services quantities have been posted to the ERCOT Website; Data Products; Grid; Forecasts under the Projected Ancillary Service Requirements link located under the Reports & Extracts 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/secure/data-products/grid/forecasts | AS Postings | Active |
| Jun 17, 2025 8:45:50 AM | The Daily RSASM for 06/17/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 17, 2025 12:08:20 AM | No sudden loss of generation greater than 450 MW occurred on June 16, 2025. | Operational Information | Active |
| Jun 16, 2025 8:45:49 AM | The Daily RSASM for 06/16/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 16, 2025 12:04:47 AM | No sudden loss of generation greater than 450 MW occurred on June 15, 2025. | Operational Information | Active |
| Jun 15, 2025 11:20:48 AM | ERCOT has cancelled the following notice: ERCOT will execute a SASM at 10:45 for operating day 06/15/25 for HE13 RRS 49.1MW, HE14 ECRS 30.2MW RRS 48.5MW, HE15 ECRS 41.8MW RRS 49.7MW, HE16 ECRS 60.2MW RRS 43.7 MW, HE17 ECRS 54.4MW RRS 39.8MW, HE18 ECRS 58.3MW RRS 36.4MW, HE19 ECRS 42.7MW RRS 36MW | Operational Information | Cancelled |
| Jun 15, 2025 10:11:20 AM | ERCOT will execute a SASM at 10:45 for operating day 06/15/25 for HE13 RRS 49.1MW, HE14 ECRS 30.2MW RRS 48.5MW, HE15 ECRS 41.8MW RRS 49.7MW, HE16 ECRS 60.2MW RRS 43.7 MW, HE17 ECRS 54.4MW RRS 39.8MW, HE18 ECRS 58.3MW RRS 36.4MW, HE19 ECRS 42.7MW RRS 36MW | Operational Information | Active |
| Jun 15, 2025 8:46:51 AM | The Daily RSASM for 06/15/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 15, 2025 5:11:48 AM | ERCOT has cancelled the following notice: ERCOT will execute a SASM at 0450 for operating day 06/15/25 for RRS – 60.1 MW HE 8, 51 MW HE 9, 42.1 MW HE 10, 42.4 MW HE 11, 46.4 MW HE12. NONSPIN – 40 MW HE 11 – 12, REGDN. 29 MW HE 10, 28 MW HE 11, ECRS – 25.1 MW HE 8, 53.8 MW HE 9, 48.9 MW HE 10, 36.3 MW HE 11, 32.3 MW HE 12. | Operational Information | Cancelled |
| Jun 15, 2025 4:18:39 AM | ERCOT will execute a SASM at 0450 for operating day 06/15/25 for RRS – 60.1 MW HE 8, 51 MW HE 9, 42.1 MW HE 10, 42.4 MW HE 11, 46.4 MW HE12. NONSPIN – 40 MW HE 11 – 12, REGDN. 29 MW HE 10, 28 MW HE 11, ECRS – 25.1 MW HE 8, 53.8 MW HE 9, 48.9 MW HE 10, 36.3 MW HE 11, 32.3 MW HE 12. | Operational Information | Active |
| Jun 15, 2025 12:02:02 AM | On June 14, 2025, a sudden loss of generation occurred at 19:35 totaling 556 MW. Frequency declined to 59.949 Hz, ERCOT load was 71,401 MW. | Operational Information | Active |
| Jun 14, 2025 8:46:36 AM | The Daily RSASM for 06/14/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 14, 2025 12:02:00 AM | No sudden loss of generation greater than 450 MW occurred on June 13, 2025. | Operational Information | Active |
| Jun 13, 2025 8:46:43 AM | The Daily RSASM for 06/13/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 13, 2025 2:22:58 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K - index of 7 or greater until 06/13/2025 06:00UTC. | Operational Information | Cancelled |
| Jun 13, 2025 12:05:05 AM | No sudden loss of generation greater than 450 MW occurred on June 12, 2025. | Operational Information | Active |
| Jun 12, 2025 8:05:29 PM | The Space Weather Prediction Center has issued a GMD Warning of K - index of 7 or greater until 06/13/2025 06:00UTC. | Operational Information | Active |
| Jun 12, 2025 8:46:33 AM | The Daily RSASM for 06/12/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 12, 2025 12:01:27 AM | No sudden loss of generation greater than 450 MW occurred on June 11, 2025. | Operational Information | Active |
| Jun 11, 2025 8:46:36 AM | The Daily RSASM for 06/11/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 11, 2025 12:04:11 AM | No sudden loss of generation greater than 450 MW occurred on June 10, 2025. | Operational Information | Active |
| Jun 10, 2025 8:46:40 AM | The Daily RSASM for 06/10/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 10, 2025 3:51:51 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 |
| Jun 10, 2025 3:51:35 AM | ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor. | Operational Information | Active |
| Jun 10, 2025 12:03:06 AM | No sudden loss of generation greater than 450 MW occurred on June 9, 2025. | Operational Information | Active |
| Jun 9, 2025 4:07:00 PM | ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. | Operational Information | Active |
| Jun 9, 2025 8:46:27 AM | The Daily RSASM for 06/09/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 9, 2025 8:00:19 AM | ERCOT has cancelled the following notice: ERCOT is issuing a Watch for Sunday evening, June 8, 2025 through Monday morning, June 9, 2025 due to wind gusts up to 90 mph in the North Texas area including the DFW area within the ERCOT Region. If you experience any issues as a direct result of the weather event, notify ERCOT. | Watch | Cancelled |
| Jun 9, 2025 12:23:19 AM | No sudden loss of generation greater than 450 MW occurred on June 8, 2025. | Operational Information | Active |
| Jun 8, 2025 10:16:13 PM | ERCOT has cancelled the following notice: At 1952, ERCOT is issuing a Transmission Emergency due to a post contingency overload in the North West Texas Region. ERCOT is taking manual action to correct the post contingency overload. | Emergency Notice | Cancelled |
| Jun 8, 2025 10:14:20 PM | On Sunday, June 8, 2025, at 1945, ERCOT instructed a Load Curtailment totaling 10 MW in the Childress area of the ERCOT Region due to multiple Forced Outages causing severe post contingent overloads. All Load was restored at 22:05 | Operational Information | Active |
| Jun 8, 2025 9:05:37 PM | ERCOT has cancelled the following notice: ERCOT is issuing a Watch for Sunday evening, June 8, 2025 through Monday morning, June 9, 2025 due to wind gusts up to 90 mph in the North Texas area including the DFW area within the ERCOT Region. If you experience any issues as a direct result of the weather event, notify ERCOT. | Operational Information | Cancelled |
| Jun 8, 2025 9:05:25 PM | ERCOT is issuing a Watch for Sunday evening, June 8, 2025 through Monday morning, June 9, 2025 due to wind gusts up to 90 mph in the North Texas area including the DFW area within the ERCOT Region. If you experience any issues as a direct result of the weather event, notify ERCOT. | Watch | Active |
| Jun 8, 2025 9:04:29 PM | ERCOT is issuing a Watch for Sunday evening, June 8, 2025 through Monday morning, June 9, 2025 due to wind gusts up to 90 mph in the North Texas area including the DFW area within the ERCOT Region. If you experience any issues as a direct result of the weather event, notify ERCOT. | Operational Information | Active |
| Jun 8, 2025 8:10:23 PM | At 1952, ERCOT is issuing a Transmission Emergency due to a post contingency overload in the North West Texas Region. ERCOT is taking manual action to correct the post contingency overload. | Emergency Notice | Active |
| Jun 8, 2025 8:47:46 AM | The Daily RSASM for 06/08/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 8, 2025 12:08:02 AM | No sudden loss of generation greater than 450 MW occurred on June 7, 2025. | Operational Information | Active |
| Jun 7, 2025 8:46:30 AM | The Daily RSASM for 06/07/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 7, 2025 12:48:42 AM | No sudden loss of generation greater than 450 MW occurred on June 6, 2025. | Operational Information | Active |
| Jun 6, 2025 8:46:54 AM | The Daily RSASM for 06/06/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 6, 2025 12:04:41 AM | On June 5, 2025, a sudden loss of generation occurred at 02:25 totaling 598 MW. Frequency declined to 59.933 Hz, ERCOT load was 50,770 MW. | Operational Information | Active |
| Jun 5, 2025 6:26:49 PM | ERCOT has cancelled the following notice: At 17:30 on 6/05/2025, 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 |
| Jun 5, 2025 4:41:44 PM | At 17:30 on 6/05/2025, 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 |
| Jun 5, 2025 4:33:31 PM | ERCOT has cancelled the following notice: At 3:25 PM on 6/05/2025, 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 |
| Jun 5, 2025 11:16:13 AM | At 3:25 PM on 6/05/2025, 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 |
| Jun 5, 2025 8:46:28 AM | The Daily RSASM for 06/05/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 5, 2025 4:00:19 AM | ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor. | Operational Information | Active |
| Jun 5, 2025 4:00:06 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 |
| Jun 5, 2025 12:00:49 AM | No sudden loss of generation greater than 450 MW occurred on June 4, 2025. | Operational Information | Active |
| Jun 4, 2025 3:55:22 PM | ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. | Operational Information | Active |
| Jun 4, 2025 3:00:28 PM | ERCOT has cancelled the following notice: ERCOT will execute a SASM at 1440 for operating day 06/04/25 for ECRS HE17 6.5MW, HE18 6.6MW, HE19 5.7MW | Operational Information | Cancelled |
| Jun 4, 2025 2:08:44 PM | ERCOT will execute a SASM at 1440 for operating day 06/04/25 for ECRS HE17 6.5MW, HE18 6.6MW, HE19 5.7MW | Operational Information | Active |
| Jun 4, 2025 10:49:09 AM |
End of ERCOT Emergency Notification Test At 10:49, the test of the ERCOT Emergency Notification System ended. |
Emergency Notice | Active |
| Jun 4, 2025 10:37:42 AM |
ERCOT Emergency Notification Test At 10:37, this is a test of the ERCOT Emergency Notification System. No action is required. |
Emergency Notice | Active |
| Jun 4, 2025 8:46:34 AM | The Daily RSASM for 06/04/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 4, 2025 12:09:18 AM | No sudden loss of generation greater than 450 MW occurred on June 3, 2025. | Operational Information | Active |
| Jun 3, 2025 8:47:04 AM | The Daily RSASM for 06/03/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 3, 2025 4:32:52 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K7 until June 3, 2025 04:00. | Operational Information | Cancelled |
| Jun 3, 2025 12:05:19 AM | On June 2, 2025, a sudden loss of generation occurred at 02:49 totaling 643 MW. Frequency declined to 59.938 Hz, ERCOT load was 49,607 MW. | Operational Information | Active |
| Jun 2, 2025 4:06:07 PM | The Space Weather Prediction Center has extended the GMD Warning of K7 until June 3, 2025 04:00. | Operational Information | Active |
| Jun 2, 2025 4:05:06 PM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 2, 2025 at 1600. | Operational Information | Cancelled |
| Jun 2, 2025 8:46:53 AM | The Daily RSASM for 06/02/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 2, 2025 6:42:57 AM | The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 2, 2025 at 1600. | Operational Information | Active |
| Jun 2, 2025 4:37:26 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the K-7 or greater Warning until 0400 on 06/02/2025. | Non-Operational Notice | Cancelled |
| Jun 2, 2025 12:24:27 AM | On June 1, 2025, a sudden loss of generation occurred at 23:02 totaling 528 MW. Frequency declined to 59.982 Hz, ERCOT load was 60,363 MW. | Operational Information | Active |
| Jun 2, 2025 12:23:36 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K8 until June 1, 2025 16:00. | Operational Information | Cancelled |
| Jun 2, 2025 12:11:59 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 1, 2025 at 1600. | Advisory | Cancelled |
| Jun 1, 2025 6:42:04 PM | ERCOT has cancelled the following notice: At 1718 Advisory issued due to ERCOT’s Transient Security Assessment Tool is currently unavailable. | Advisory | Cancelled |
| Jun 1, 2025 5:30:59 PM | At 1718 Advisory issued due to ERCOT’s Transient Security Assessment Tool is currently unavailable. | Advisory | Active |
| Jun 1, 2025 3:55:32 PM | The Space Weather Prediction Center has extended the K-7 or greater Warning until 0400 on 06/02/2025. | Non-Operational Notice | Active |
| Jun 1, 2025 8:46:13 AM | The Daily RSASM for 06/01/2025 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| Jun 1, 2025 3:59:24 AM | The Space Weather Prediction Center has extended the GMD Warning of K8 until June 1, 2025 16:00. | Operational Information | Active |
| Jun 1, 2025 3:57:39 AM | ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 until June 1, 2025 at 1600. | Operational Information | Cancelled |
| Jun 1, 2025 2:59:20 AM | The Space Weather Prediction Center has issued a GMD ALERT of K7 until June 1, 2025 at 1600. | Advisory | Active |
| Jun 1, 2025 2:47:53 AM | The Space Weather Prediction Center has issued a GMD Warning of K7 until June 1, 2025 at 1600. | Operational Information | Active |
| Jun 1, 2025 12:43:02 AM | No sudden loss of generation greater than 450 MW occurred on May 31, 2025. | Operational Information | Active |