| Aug 28, 2025 12:05:39 AM |
On August 27, 2025, a sudden loss of generation occurred at 15:43 totaling 745 MW. Frequency declined to 59.928 Hz, ERCOT load was 79,050 MW.
|
Operational Information |
Active |
| Aug 27, 2025 8:46:07 AM |
The Daily RSASM for 08/27/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 27, 2025 1:08:36 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [00:50] for operating day [08/27/2025] for:
RRS – 11.1 MW HE 10
NONSPIN – 28.0 MW HE 10 - 11
ECRS – 22 MW HE 11
REGUP – 10.9 MW HE 10
|
Operational Information |
Cancelled |
| Aug 27, 2025 12:15:00 AM |
ERCOT will execute a SASM at [00:50] for operating day [08/27/2025] for:
RRS – 11.1 MW HE 10
NONSPIN – 28.0 MW HE 10 - 11
ECRS – 22 MW HE 11
REGUP – 10.9 MW HE 10
|
Operational Information |
Active |
| Aug 27, 2025 12:13:20 AM |
No sudden loss of generation greater than 450 MW occurred on August 26, 2025.
|
Operational Information |
Active |
| Aug 26, 2025 8:46:44 AM |
The Daily RSASM for 08/26/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 26, 2025 12:02:01 AM |
On August 25, 2025, a sudden loss of generation occurred at 03:46 totaling 849 MW. Frequency declined to 59.925 Hz, ERCOT load was 53,548 MW.
|
Operational Information |
Active |
| Aug 25, 2025 8:46:18 AM |
The Daily RSASM for 08/25/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 25, 2025 12:11:13 AM |
No sudden loss of generation greater than 450 MW occurred on August 24, 2025.
|
Operational Information |
Active |
| Aug 24, 2025 8:46:22 AM |
The Daily RSASM for 08/24/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 24, 2025 1:49:58 AM |
No sudden loss of generation greater than 450 MW occurred on August 23, 2025.
|
Operational Information |
Active |
| Aug 23, 2025 7:11:47 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 18:40 for operating day 08/23/25 HE21 through operating day 08/24/25 HE 24 for REGUP 9.0 MW each hour and for REGDN, [08/23/25] HE21: 3.8 MW, HE22: 4 MW, HE23: 3.8 MW, HE24: 4 MW; [08/24/25] HE01: 3.8 MW, HE02: 4 MW, HE03: 3.8 MW, HE04: 4 MW, HE05: 3.8 MW, HE06: 4 MW, HE07: 3.8 MW, HE08: 4 MW, HE09: 3.8 MW, HE10: 4.5 MW, HE11: 4.3 MW, HE12: 4 MW, HE13: 3.8 MW, HE14: 4 MW, HE15: 3.8 MW, HE16: 4 MW, HE17: 3.8 MW, HE18: 4 MW, HE19: 4.3 MW, HE20: 4.5 MW, HE21: 3.8 MW, HE22: 4 MW, HE23: 3.8 MW, HE24: 4 MW
|
Operational Information |
Cancelled |
| Aug 23, 2025 6:04:48 PM |
ERCOT will execute a SASM at 18:40 for operating day 08/23/25 HE21 through operating day 08/24/25 HE 24 for REGUP 9.0 MW each hour and for REGDN, [08/23/25] HE21: 3.8 MW, HE22: 4 MW, HE23: 3.8 MW, HE24: 4 MW; [08/24/25] HE01: 3.8 MW, HE02: 4 MW, HE03: 3.8 MW, HE04: 4 MW, HE05: 3.8 MW, HE06: 4 MW, HE07: 3.8 MW, HE08: 4 MW, HE09: 3.8 MW, HE10: 4.5 MW, HE11: 4.3 MW, HE12: 4 MW, HE13: 3.8 MW, HE14: 4 MW, HE15: 3.8 MW, HE16: 4 MW, HE17: 3.8 MW, HE18: 4 MW, HE19: 4.3 MW, HE20: 4.5 MW, HE21: 3.8 MW, HE22: 4 MW, HE23: 3.8 MW, HE24: 4 MW
|
Operational Information |
Active |
| Aug 23, 2025 8:46:50 AM |
The Daily RSASM for 08/23/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 23, 2025 12:05:51 AM |
No sudden loss of generation greater than 450 MW occurred on August 22, 2025.
|
Operational Information |
Active |
| Aug 22, 2025 8:46:17 AM |
The Daily RSASM for 08/22/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 22, 2025 12:10:11 AM |
No sudden loss of generation greater than 450 MW occurred on August 21, 2025.
|
Operational Information |
Active |
| Aug 21, 2025 3:22:48 PM |
ERCOT has cancelled the following notice: The DC_N (North) DC Tie will be unavailable from
08/21/2025 09:00 through 08/21/2025 17:00 due to a forced outage.
|
Operational Information |
Cancelled |
| Aug 21, 2025 9:04:28 AM |
The DC_N (North) DC Tie will be unavailable from
08/21/2025 09:00 through 08/21/2025 17:00 due to a forced outage.
|
Operational Information |
Active |
| Aug 21, 2025 8:46:07 AM |
The Daily RSASM for 08/21/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 21, 2025 12:38:09 AM |
No sudden loss of generation greater than 450 MW occurred on August 20, 2025.
|
Operational Information |
Active |
| Aug 20, 2025 8:46:29 AM |
The Daily RSASM for 08/20/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 20, 2025 12:10:02 AM |
On August 19, 2025, a sudden loss of generation occurred at 05:24 totaling 538.6 MW. Frequency declined to 59.939 Hz, ERCOT load was 57,042 MW.
|
Operational Information |
Active |
| Aug 19, 2025 8:46:40 AM |
The Daily RSASM for 08/19/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 19, 2025 12:05:34 AM |
No sudden loss of generation greater than 450 MW occurred on August 18, 2025.
|
Operational Information |
Active |
| Aug 18, 2025 8:47:47 AM |
The Daily RSASM for 08/18/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 18, 2025 12:00:10 AM |
No sudden loss of generation greater than 450 MW occurred on August 17, 2025.
|
Operational Information |
Active |
| Aug 17, 2025 4:00:05 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 |
| Aug 17, 2025 8:46:33 AM |
The Daily RSASM for 08/17/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 17, 2025 12:01:06 AM |
No sudden loss of generation greater than 450 MW occurred on August 16, 2025.
|
Operational Information |
Active |
| Aug 16, 2025 8:47:36 AM |
The Daily RSASM for 08/16/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 16, 2025 12:00:42 AM |
No sudden loss of generation greater than 450 MW occurred on August 15, 2025.
|
Operational Information |
Active |
| Aug 15, 2025 8:46:51 AM |
The Daily RSASM for 08/15/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 15, 2025 12:55:13 AM |
No sudden loss of generation greater than 450 MW occurred on August 14, 2025.
|
Operational Information |
Active |
| Aug 14, 2025 10:49:34 AM |
ERCOT Emergency Base Points are Disabled
|
Operational Information |
Cancelled |
| Aug 14, 2025 10:46:10 AM |
ERCOT has cancelled the following notice: At 10:30, ERCOT is conducting an unannounced Constant Frequency Control test and has placed a QSE on Constant Frequency.
|
Operational Information |
Cancelled |
| Aug 14, 2025 10:37:18 AM |
ERCOT Emergency Base Points are Enabled
|
Operational Information |
Active |
| Aug 14, 2025 10:30:01 AM |
At 10:30, ERCOT is conducting an unannounced Constant Frequency Control test and has placed a QSE on Constant Frequency.
|
Operational Information |
Active |
| Aug 14, 2025 8:46:53 AM |
The Daily RSASM for 08/14/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 14, 2025 12:08:20 AM |
No sudden loss of generation greater than 450 MW occurred on August 13, 2025.
|
Operational Information |
Active |
| Aug 13, 2025 11:38:36 AM |
Notification of Real-Time Market (RTM) prices under investigation. ERCOT is currently investigating Real-Time prices for SCED interval 07:40 on OD 08/12/2025. 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 08/14/2025 at 4PM for OD 08/12/2025.
|
Alert |
Active |
| Aug 13, 2025 8:46:36 AM |
The Daily RSASM for 08/13/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 13, 2025 12:07:23 AM |
No sudden loss of generation greater than 450 MW occurred on August 12, 2025.
|
Operational Information |
Active |
| Aug 12, 2025 8:46:43 AM |
The Daily RSASM for 08/12/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 12, 2025 12:41:03 AM |
No sudden loss of generation greater than 450 MW occurred on August 11, 2025.
|
Operational Information |
Active |
| Aug 11, 2025 8:48:19 AM |
The Daily RSASM for 08/11/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 11, 2025 12:06:01 AM |
No sudden loss of generation greater than 450 MW occurred on August 10, 2025.
|
Operational Information |
Active |
| Aug 10, 2025 8:46:40 AM |
The Daily RSASM for 08/10/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 10, 2025 7:19:15 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 06:53 for operating day 08/10/2025 This is for ECRS HE16-19 15MW, HE20 20MW, HE21 25MW, 22 HE22 10MW, HE23 5MW
RRS HE21 15MW, HE22 5MW.
|
Operational Information |
Cancelled |
| Aug 10, 2025 6:27:29 AM |
ERCOT will execute a SASM at 06:53 for operating day 08/10/2025 This is for ECRS HE16-19 15MW, HE20 20MW, HE21 25MW, 22 HE22 10MW, HE23 5MW
RRS HE21 15MW, HE22 5MW.
|
Operational Information |
Active |
| Aug 10, 2025 12:02:35 AM |
No sudden loss of generation greater than 450 MW occurred on August 9, 2025.
|
Operational Information |
Active |
| Aug 9, 2025 8:46:41 AM |
The Daily RSASM for 08/09/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 9, 2025 12:03:00 AM |
No sudden loss of generation greater than 450 MW occurred on August 8, 2025.
|
Operational Information |
Active |
| Aug 8, 2025 8:46:08 AM |
The Daily RSASM for 08/08/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 8, 2025 12:00:04 AM |
No sudden loss of generation greater than 450 MW occurred on August 7, 2025.
|
Operational Information |
Active |
| Aug 7, 2025 2:11:38 PM |
DAM is complete. DRUC will begin at 1508.
|
Operational Information |
Active |
| Aug 7, 2025 1:20:53 PM |
DAM Notice: ERCOT has postponed the deadline for the posting of the DAM solution for Operating Day 08/08/2025 due to long solution run time.
|
Advisory |
Active |
| Aug 7, 2025 10:11:00 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 |
| Aug 7, 2025 9:54:12 AM |
Notification of Real-Time Market (RTM) prices under investigation. ERCOT is currently investigating Real-Time prices for SCED intervals 00:00 - 13:40 on OD 08/06/2025. 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 08/08/2025 at 4PM for OD 08/06/2025.
|
Alert |
Active |
| Aug 7, 2025 8:49:09 AM |
At 3:30 PM on 8/07/2025, 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 |
| Aug 7, 2025 8:46:43 AM |
The Daily RSASM for 08/07/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 7, 2025 12:57:24 AM |
No sudden loss of generation greater than 450 MW occurred on August 6, 2025.
|
Operational Information |
Active |
| Aug 6, 2025 3:44:59 PM |
ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop.
|
Operational Information |
Active |
| Aug 6, 2025 8:46:32 AM |
The Daily RSASM for 08/06/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 6, 2025 12:00:12 AM |
On August 05, 2025, a sudden loss of generation occurred at 14:17 totaling 475 MW. Frequency declined to 59.953 Hz, ERCOT load was 79,017 MW.
|
Operational Information |
Active |
| Aug 5, 2025 8:47:19 AM |
The Daily RSASM for 08/05/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 5, 2025 12:00:02 AM |
No sudden loss of generation greater than 450 MW occurred on August 4, 2025.
|
Operational Information |
Active |
| Aug 4, 2025 8:47:09 AM |
The Daily RSASM for 08/04/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 4, 2025 12:02:57 AM |
No sudden loss of generation greater than 450 MW occurred on August 3, 2025.
|
Operational Information |
Active |
| Aug 3, 2025 8:46:18 AM |
The Daily RSASM for 08/03/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 3, 2025 12:05:18 AM |
No sudden loss of generation greater than 450 MW occurred on August 2, 2025.
|
Operational Information |
Active |
| Aug 2, 2025 8:46:33 AM |
The Daily RSASM for 08/02/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 2, 2025 12:04:00 AM |
On August 1, 2025, a sudden loss of generation occurred at 12:03 totaling 679 MW. Frequency declined to 59.954 Hz, ERCOT load was 73,946 MW.
|
Operational Information |
Active |
| Aug 1, 2025 11:22:59 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 22:54 for operating day 08/02/25 this is for NSPIN HE02-13 98MW each hour.
|
Operational Information |
Cancelled |
| Aug 1, 2025 10:30:15 PM |
ERCOT will execute a SASM at 22:54 for operating day 08/02/25 this is for NSPIN HE02-13 98MW each hour.
|
Operational Information |
Active |
| Aug 1, 2025 6:31:11 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 17:56 for operating day 08/01/25 this is for ECRS HE21 10MW, HE24 49.5MW. REGUP HE22 21.70MW, HE23 4.5MW. NSPIN HE20 10.10MW. RRS HE22 28.3MW, HE23 45.10MW.
|
Operational Information |
Cancelled |
| Aug 1, 2025 5:32:44 PM |
ERCOT will execute a SASM at 17:56 for operating day 08/01/25 this is for ECRS HE21 10MW, HE24 49.5MW. REGUP HE22 21.70MW, HE23 4.5MW. NSPIN HE20 10.10MW. RRS HE22 28.3MW, HE23 45.10MW.
|
Operational Information |
Active |
| Aug 1, 2025 8:47:01 AM |
The Daily RSASM for 08/01/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| Aug 1, 2025 12:19:55 AM |
No sudden loss of generation greater than 450 MW occurred on July 31, 2025.
|
Operational Information |
Active |
