| Nov 22, 2025 12:02:23 AM |
On November 21, 2025, a sudden loss of generation occurred at 12:08 totaling 1323.1 MW. Frequency declined to 59.901 Hz, ERCOT load was 57,446 MW.
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Operational Information |
Active |
| Nov 21, 2025 2:38:41 PM |
Notification of Real-Time Market (RTM) prices under investigation. ERCOT is currently investigating Real-Time prices for SCED intervals 15:50 - 16:50 on OD 11/20/2025. Should a price correction be warranted, a follow-up Market Notice will be issued with more details. The deadline for correcting prices before they become final is 11/24/2025 at 4PM for OD 11/20/2025.
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Alert |
Active |
| Nov 21, 2025 11:06:37 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 10:40 for operating day 11/21/25 for HE13-16 for 28 MW NSPIN
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Operational Information |
Cancelled |
| Nov 21, 2025 10:06:01 AM |
ERCOT will execute a SASM at 10:40 for operating day 11/21/25 for HE13-16 for 28 MW NSPIN
|
Operational Information |
Active |
| Nov 21, 2025 8:46:42 AM |
The Daily RSASM for 11/21/2025 will not be occurring due to zero participating QSEs.
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Operational Information |
Active |
| Nov 21, 2025 12:08:41 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [23:50] for operating day [11/21/2025] for:
NONSPIN: 7.2 MW HE 3, 18.2 MW HE 4, 6.2 MW HE 5
|
Operational Information |
Cancelled |
| Nov 21, 2025 12:01:10 AM |
No sudden loss of generation greater than 450 MW occurred on November 20, 2025.
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Operational Information |
Active |
| Nov 20, 2025 11:14:24 PM |
ERCOT will execute a SASM at [23:50] for operating day [11/21/2025] for:
NONSPIN: 7.2 MW HE 3, 18.2 MW HE 4, 6.2 MW HE 5
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Operational Information |
Active |
| Nov 20, 2025 8:47:05 AM |
The Daily RSASM for 11/20/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 20, 2025 12:00:58 AM |
No sudden loss of generation greater than 450 MW occurred on November 19, 2025.
|
Operational Information |
Active |
| Nov 19, 2025 8:47:00 AM |
The Daily RSASM for 11/19/2025 will not be occurring due to zero participating QSEs.
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Operational Information |
Active |
| Nov 19, 2025 12:15:50 AM |
On Nov 18, 2025, a sudden loss of generation occurred at 02:27 totaling 459 MW. Frequency declined to 59.963 Hz, ERCOT load was 47,813 MW.
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Operational Information |
Active |
| Nov 18, 2025 2:04:16 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [13:45] for operating day 11/18/25 for ECRS- HE16 61.8 MW, NSPIN- HE16 79MW, RRS- HE16 9.2MW.
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Operational Information |
Cancelled |
| Nov 18, 2025 1:07:59 PM |
ERCOT will execute a SASM at [13:45] for operating day 11/18/25 for ECRS- HE16 61.8 MW, NSPIN- HE16 79MW, RRS- HE16 9.2MW.
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Operational Information |
Active |
| Nov 18, 2025 8:46:18 AM |
The Daily RSASM for 11/18/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 18, 2025 12:00:30 AM |
No sudden loss of generation greater than 450 MW occurred on November 17, 2025.
|
Operational Information |
Active |
| Nov 17, 2025 8:46:29 AM |
The Daily RSASM for 11/17/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 17, 2025 12:06:47 AM |
No sudden loss of generation greater than 450 MW occurred on November 16, 2025.
|
Operational Information |
Active |
| Nov 16, 2025 8:46:29 AM |
The Daily RSASM for 11/16/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 16, 2025 1:06:21 AM |
No sudden loss of generation greater than 450 MW occurred on November 15, 2025.
|
Operational Information |
Active |
| Nov 15, 2025 8:46:08 AM |
The Daily RSASM for 11/15/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 15, 2025 1:04:21 AM |
No sudden loss of generation greater than 450 MW occurred on November 14, 2025.
|
Operational Information |
Active |
| Nov 14, 2025 8:46:19 AM |
The Daily RSASM for 11/14/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 14, 2025 1:58:54 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [01:45] for operating day 11/14/25 for ECRS- HE09 5.3MW, HE10 3.3MW, HE11-16 3.8MW and REGDN- HE09 8.5MW, HE10 3.7MW, HE11 8.2MW, HE12 6MW.
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Operational Information |
Cancelled |
| Nov 14, 2025 1:08:00 AM |
ERCOT will execute a SASM at [01:45] for operating day 11/14/25 for ECRS- HE09 5.3MW, HE10 3.3MW, HE11-16 3.8MW and REGDN- HE09 8.5MW, HE10 3.7MW, HE11 8.2MW, HE12 6MW.
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Operational Information |
Active |
| Nov 14, 2025 12:41:08 AM |
No sudden loss of generation greater than 450 MW occurred on November 13, 2025.
|
Operational Information |
Active |
| Nov 13, 2025 8:46:15 AM |
The Daily RSASM for 11/13/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 13, 2025 3:05:41 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Alert for a K-8 on 11/11/2025 at 19:21.
|
Operational Information |
Cancelled |
| Nov 13, 2025 3:05:17 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K7 or greater until 0300, Nov 13, 2025.
|
Advisory |
Cancelled |
| Nov 13, 2025 12:05:34 AM |
No sudden loss of generation greater than 450 MW occurred on November 12, 2025.
|
Operational Information |
Active |
| Nov 12, 2025 3:12:15 PM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has extended the GMD Warning of K7 or greater until 1500, Nov 12, 2025.
|
Operational Information |
Cancelled |
| Nov 12, 2025 3:10:45 PM |
The Space Weather Prediction Center has extended the GMD Warning of K7 or greater until 0300, Nov 13, 2025.
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Advisory |
Active |
| Nov 12, 2025 8:47:09 AM |
The Daily RSASM for 11/12/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 12, 2025 5:37:04 AM |
ERCOT has cancelled the following notice: At 06:30, ERCOT is issuing an OCN due to a potential wildfire risk for Sunday, November 9, 2025, for a large portion of South-Central Texas in the ERCOT region until further notice.
|
OCN |
Cancelled |
| Nov 12, 2025 2:57:21 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Alert for a K-7 on 11/11/2025 at 18:40.
|
Operational Information |
Cancelled |
| Nov 12, 2025 2:51:05 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 until 0400, Nov 12, 2025.
|
Operational Information |
Cancelled |
| Nov 12, 2025 2:50:42 AM |
The Space Weather Prediction Center has extended the GMD Warning of K7 or greater until 1500, Nov 12, 2025.
|
Operational Information |
Active |
| Nov 12, 2025 12:38:11 AM |
No sudden loss of generation greater than 450 MW occurred on November 11, 2025.
|
Operational Information |
Active |
| Nov 11, 2025 7:29:29 PM |
The Space Weather Prediction Center has issued a GMD Alert for a K-8 on 11/11/2025 at 19:21.
|
Operational Information |
Active |
| Nov 11, 2025 7:01:10 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [18:45] for operating day 11/11/25 for HE21-22 RRS 24.1 MW, HE23 13.1 MW, and HE24 24.1MW.
|
Operational Information |
Cancelled |
| Nov 11, 2025 6:53:21 PM |
The Space Weather Prediction Center has issued a GMD Alert for a K-7 on 11/11/2025 at 18:40.
|
Operational Information |
Active |
| Nov 11, 2025 6:39:34 PM |
The Space Weather Prediction Center has issued a GMD Warning of K7 until 0400, Nov 12, 2025.
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Operational Information |
Active |
| Nov 11, 2025 6:07:17 PM |
ERCOT will execute a SASM at [18:45] for operating day 11/11/25 for HE21-22 RRS 24.1 MW, HE23 13.1 MW, and HE24 24.1MW.
|
Operational Information |
Active |
| Nov 11, 2025 8:47:22 AM |
The Daily RSASM for 11/11/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 11, 2025 3:56:11 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [03:45] for operating day 11/11/25 for HE08 6.1 MW REGDOWN & 5.2MW RRS, HE09 1.1 MW REGDOWN, and HE21 11 MW RRS.
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Operational Information |
Cancelled |
| Nov 11, 2025 3:07:12 AM |
ERCOT will execute a SASM at [03:45] for operating day 11/11/25 for HE08 6.1 MW REGDOWN & 5.2MW RRS, HE09 1.1 MW REGDOWN, and HE21 11 MW RRS.
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Operational Information |
Active |
| Nov 11, 2025 12:14:33 AM |
No sudden loss of generation greater than 450 MW occurred on November 10, 2025.
|
Operational Information |
Active |
| Nov 10, 2025 8:46:51 AM |
The Daily RSASM for 11/10/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 10, 2025 12:00:49 AM |
No sudden loss of generation greater than 450 MW occurred on November 9, 2025.
|
Operational Information |
Active |
| Nov 9, 2025 8:46:54 AM |
The Daily RSASM for 11/09/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 9, 2025 6:30:30 AM |
At 06:30, ERCOT is issuing an OCN due to a potential wildfire risk for Sunday, November 9, 2025, for a large portion of South-Central Texas in the ERCOT region until further notice.
|
OCN |
Active |
| Nov 9, 2025 12:01:10 AM |
No sudden loss of generation greater than 450 MW occurred on November 8, 2025.
|
Operational Information |
Active |
| Nov 8, 2025 8:46:34 AM |
The Daily RSASM for 11/08/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 8, 2025 12:00:35 AM |
No sudden loss of generation greater than 450 MW occurred on November 7, 2025.
|
Operational Information |
Active |
| Nov 7, 2025 6:20:59 PM |
At 18:20, All Non-Spin has been recalled.
|
Operational Information |
Active |
| Nov 7, 2025 6:20:29 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2025-11-07 18:20:29, END_TIME: 2025-11-07 18:20:29, DURATION: 0 Hrs 0 Mins.;
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Operational Information |
|
| Nov 7, 2025 5:33:01 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 736.6, BEGIN_TIME: 2025-11-07 18:00:00, END_TIME: 2025-11-07 23:59:00, DURATION: 5 Hrs 59 Mins.;
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Operational Information |
|
| Nov 7, 2025 4:38:17 PM |
At 16:36 approximately 732 MW of Non-Spin has been deployed, anticipated duration is 23:59.
|
Operational Information |
Active |
| Nov 7, 2025 4:36:58 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 732.1, BEGIN_TIME: 2025-11-07 16:36:58, END_TIME: 2025-11-07 23:59:00, DURATION: 7 Hrs 22 Mins.;
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Operational Information |
|
| Nov 7, 2025 8:47:24 AM |
The Daily RSASM for 11/07/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 7, 2025 12:08:41 AM |
No sudden loss of generation greater than 450 MW occurred on November 6, 2025.
|
Operational Information |
Active |
| Nov 6, 2025 4:40:24 PM |
ERCOT has cancelled the following notice: At 3:30 PM on 11/06/2025, 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 |
| Nov 6, 2025 10:16:26 AM |
At 3:30 PM on 11/06/2025, 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.
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Operational Information |
Active |
| Nov 6, 2025 8:47:43 AM |
The Daily RSASM for 11/06/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 6, 2025 6:00:18 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Alert of K7 until 0600, Nov 6, 2025.
|
Operational Information |
Cancelled |
| Nov 6, 2025 6:00:07 AM |
ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Warning of K7 until 0600, Nov 6, 2025.
|
Operational Information |
Cancelled |
| Nov 6, 2025 3:50:15 AM |
ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor.
|
Operational Information |
Active |
| Nov 6, 2025 3:49:46 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 |
| Nov 5, 2025 11:51:15 PM |
The Space Weather Prediction Center has issued a GMD Alert of K7 until 0600, Nov 6, 2025.
|
Operational Information |
Active |
| Nov 5, 2025 10:49:49 PM |
The Space Weather Prediction Center has issued a GMD Warning of K7 until 0600, Nov 6, 2025.
|
Operational Information |
Active |
| Nov 5, 2025 3:52:25 PM |
ERCOT has cancelled the following notice: At 15:30, ERCOT will perform a patch on its Market Management System. We do not expect to miss a SCED run.
|
Operational Information |
Cancelled |
| Nov 5, 2025 3:45:50 PM |
ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop.
|
Operational Information |
Active |
| Nov 5, 2025 3:00:03 PM |
At 15:30, ERCOT will perform a patch on its Market Management System. We do not expect to miss a SCED run.
|
Operational Information |
Active |
| Nov 5, 2025 8:46:28 AM |
The Daily RSASM for 11/05/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 5, 2025 12:06:01 AM |
No sudden loss of generation greater than 450 MW occurred on November 4, 2025.
|
Operational Information |
Active |
| Nov 4, 2025 8:46:31 AM |
The Daily RSASM for 11/04/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 4, 2025 1:13:02 AM |
On Nov 3, 2025, a sudden loss of generation occurred at 06:56 totaling 502 MW. Frequency declined to 59.953 Hz, ERCOT load was 47,084 MW.
|
Operational Information |
Active |
| Nov 3, 2025 8:46:20 AM |
The Daily RSASM for 11/03/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 3, 2025 12:03:14 AM |
No sudden loss of generation greater than 450 MW occurred on November 2, 2025.
|
Operational Information |
Active |
| Nov 2, 2025 8:46:01 AM |
The Daily RSASM for 11/02/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 2, 2025 12:09:56 AM |
No sudden loss of generation greater than 450 MW occurred on November 1, 2025.
|
Operational Information |
Active |
| Nov 1, 2025 8:16:41 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 19:45 for operating day 11/01/25 this is for RRS HE22-HE24: 19.2MW each hour as well as operating day 11/02/25 for RRS HE1-HE5: 19.2MW each hour.
|
Operational Information |
Cancelled |
| Nov 1, 2025 7:10:51 PM |
ERCOT will execute a SASM at 19:45 for operating day 11/01/25 this is for RRS HE22-HE24: 19.2MW each hour as well as operating day 11/02/25 for RRS HE1-HE5: 19.2MW each hour.
|
Operational Information |
Active |
| Nov 1, 2025 8:45:57 AM |
The Daily RSASM for 11/01/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Nov 1, 2025 12:01:27 AM |
No sudden loss of generation greater than 450 MW occurred on October 31, 2025.
|
Operational Information |
Active |
