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Operations Messages

This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. 

Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 May 2026
Date & Time Notice Type Status
May 11, 2026 3:11:12 AM ERCOT has cancelled the following notice: ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Cancelled
May 11, 2026 12:52:24 AM No sudden loss of generation greater than 450 MW occurred on May 10, 2026. Operational Information Active
May 10, 2026 11:55:36 PM ERCOT has cancelled the following notice: Ercot is issuing a Transmission Watch due to storm damage in the Rio Grande Valley of Harlingen, Brownsville and South Padre Island area. Operational Information Cancelled
May 10, 2026 3:40:52 PM ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Active
May 10, 2026 6:55:57 AM ERCOT has cancelled the following notice: ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Cancelled
May 10, 2026 12:28:07 AM No sudden loss of generation greater than 450 MW occurred on May 9, 2026. Operational Information Active
May 9, 2026 10:22:32 PM ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Active
May 9, 2026 8:22:22 PM At 20:20, All Non-Spin has been recalled. Operational Information Active
May 9, 2026 8:20:43 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2026-05-09 20:20:43, END_TIME: 2026-05-09 20:20:43, DURATION: 0 HRS 0 MINS; Operational Information
May 9, 2026 8:10:40 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 124.0, BEGIN_TIME: 2026-05-09 20:10:40, END_TIME: 2026-05-09 23:59:59, DURATION: 3 HRS 49 MINS; Operational Information
May 9, 2026 7:50:40 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 249.0, BEGIN_TIME: 2026-05-09 19:50:40, END_TIME: 2026-05-09 23:50:40, DURATION: 4 HRS 0 MINS; Operational Information
May 9, 2026 7:30:41 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 520.9, BEGIN_TIME: 2026-05-09 19:30:40, END_TIME: 2026-05-09 23:30:40, DURATION: 4 HRS 0 MINS; Operational Information
May 9, 2026 7:20:41 PM At 19:19 approximately 956.18 MW of Non-Spin has been deployed, anticipated duration is 05/09/26 2359. Operational Information Active
May 9, 2026 7:19:11 PM CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 956.2, BEGIN_TIME: 2026-05-09 19:19:11, END_TIME: 2026-05-09 23:19:11, DURATION: 4 HRS 0 MINS; Operational Information
May 9, 2026 3:46:48 PM Ercot is issuing a Transmission Watch due to storm damage in the Rio Grande Valley of Harlingen, Brownsville and South Padre Island area. Operational Information Active
May 9, 2026 12:04:14 AM No sudden loss of generation greater than 450 MW occurred on May 8, 2026. Operational Information Active
May 8, 2026 12:00:58 AM No sudden loss of generation greater than 450 MW occurred on May 7, 2026. Operational Information Active
May 7, 2026 6:30:06 PM ERCOT has cancelled the following notice: At 15:30 on 05/07/2026, ERCOT will perform a site failover of its Energy and 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 7, 2026 2:13:36 PM At 15:30 on 05/07/2026, ERCOT will perform a site failover of its Energy and 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 7, 2026 12:00:34 AM No sudden loss of generation greater than 450 MW occurred on May 6, 2026. Operational Information Active
May 6, 2026 12:01:06 AM No sudden loss of generation greater than 450 MW occurred on May 5, 2026. Operational Information Active
May 5, 2026 12:11:16 AM No sudden loss of generation greater than 450 MW occurred on May 4, 2026. Operational Information Active
May 4, 2026 10:54:10 AM ERCOT has cancelled the following notice: ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Cancelled
May 4, 2026 12:49:16 AM No sudden loss of generation greater than 450 MW occurred on May 3, 2026 Operational Information Active
May 3, 2026 11:46:55 PM ERCOT is taking manual action for an unsolved contingency in the Taylor County area. Operational Information Active
May 3, 2026 12:06:05 AM No sudden loss of generation greater than 450 MW occurred on May 2, 2026 Operational Information Active
May 2, 2026 12:48:16 AM No sudden loss of generation greater than 450 MW occurred on May 1, 2026 Operational Information Active
May 1, 2026 12:42:35 PM ERCOT has cancelled the following notice: ERCOT is taking manual action for a contingency in the Brazoria County area. Operational Information Cancelled
May 1, 2026 1:33:08 AM No sudden loss of generation greater than 450 MW occurred on April 30, 2026. Operational Information Active