| May 20, 2025 8:46:28 AM |
The Daily RSASM for 05/20/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 20, 2025 2:20:11 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 01:55 for operating day 05/20/25 for HE 04-12 for 19 MW ECRS
|
Operational Information |
Cancelled |
| May 20, 2025 1:24:03 AM |
ERCOT will execute a SASM at 01:55 for operating day 05/20/25 for HE 04-12 for 19 MW ECRS
|
Operational Information |
Active |
| May 20, 2025 1:23:32 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 02:55 for operating day 05/20/25 for HE 04-12 for 19 MW ECRS
|
Operational Information |
Cancelled |
| May 20, 2025 1:21:22 AM |
ERCOT will execute a SASM at 02:55 for operating day 05/20/25 for HE 04-12 for 19 MW ECRS
|
Operational Information |
Active |
| May 20, 2025 12:01:25 AM |
No sudden loss of generation greater than 450 MW occurred on May 19, 2025.
|
Operational Information |
Active |
| May 19, 2025 4:25:34 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 15:50 for operating day 05/19/2025 for 19 MW ECRS HE 18-24.
|
Operational Information |
Cancelled |
| May 19, 2025 3:14:27 PM |
ERCOT will execute a SASM at 15:50 for operating day 05/19/2025 for 19 MW ECRS HE 18-24.
|
Operational Information |
Active |
| May 19, 2025 8:46:27 AM |
The Daily RSASM for 05/19/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 19, 2025 12:01:01 AM |
No sudden loss of generation greater than 450 MW occurred on May 18, 2025.
|
Operational Information |
Active |
| May 18, 2025 8:45:56 AM |
The Daily RSASM for 05/18/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 18, 2025 12:14:53 AM |
No sudden loss of generation greater than 450 MW occurred on May 17, 2025.
|
Operational Information |
Active |
| May 17, 2025 8:26:42 PM |
At 20:25, All Non-Spin has been recalled.
|
Operational Information |
Active |
| May 17, 2025 8:25:48 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2025-05-17 20:25:48, END_TIME: 2025-05-17 20:25:48, DURATION: 0 Hrs 0 Mins.;
|
Operational Information |
|
| May 17, 2025 7:33:01 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 451.6, BEGIN_TIME: 2025-05-17 20:00:00, END_TIME: 2025-05-17 23:59:00, DURATION: 3 Hrs 59 Mins.;
|
Operational Information |
|
| May 17, 2025 7:30:29 PM |
At 19:27 approximately 434 MW of Non-Spin has been deployed, anticipated duration is 23:59.
|
Operational Information |
Active |
| May 17, 2025 7:27:52 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 434.8, BEGIN_TIME: 2025-05-17 19:27:52, END_TIME: 2025-05-17 23:59:00, DURATION: 4 Hrs 31 Mins.;
|
Operational Information |
|
| May 17, 2025 3:10:59 PM |
ERCOT is taking manual actions for a Basecase constraint in the Southeast Texas region.
|
Operational Information |
Active |
| May 17, 2025 8:45:46 AM |
The Daily RSASM for 05/17/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 17, 2025 12:19:03 AM |
No sudden loss of generation greater than 450 MW occurred on May 16, 2025.
|
Operational Information |
Active |
| May 16, 2025 11:59:06 PM |
ERCOT has cancelled the following notice: ERCOT is issuing an Advisory for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Tuesday May 13, 2025 to Friday, May 16, 2025.
|
Advisory |
Cancelled |
| May 16, 2025 9:19:05 PM |
At 21:17, All Non-Spin has been recalled.
|
Operational Information |
Active |
| May 16, 2025 9:17:58 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2025-05-16 21:17:57, END_TIME: 2025-05-16 21:17:57, DURATION: 0 Hrs 0 Mins.;
|
Operational Information |
|
| May 16, 2025 9:09:08 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 292.3, BEGIN_TIME: 2025-05-16 21:09:08, END_TIME: 2025-05-16 23:59:00, DURATION: 2 Hrs 49 Mins.;
|
Operational Information |
|
| May 16, 2025 8:45:53 PM |
ERCOT ECRS HAS BEEN RECALLED
|
Operational Information |
Cancelled |
| May 16, 2025 8:33:02 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 1194.7, BEGIN_TIME: 2025-05-16 21:00:00, END_TIME: 2025-05-16 23:59:00, DURATION: 2 Hrs 59 Mins.;
|
Operational Information |
|
| May 16, 2025 7:42:11 PM |
At 19:39 approximately 1,170 MW of Non-Spin has been deployed, anticipated duration is 23:59.
|
Operational Information |
Active |
| May 16, 2025 7:39:06 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 1170.9, BEGIN_TIME: 2025-05-16 19:39:06, END_TIME: 2025-05-16 23:59:00, DURATION: 4 Hrs 19 Mins.;
|
Operational Information |
|
| May 16, 2025 7:35:41 PM |
ERCOT ECRS HAS BEEN DEPLOYED
|
Operational Information |
Active |
| May 16, 2025 8:45:49 AM |
The Daily RSASM for 05/16/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 16, 2025 12:04:38 AM |
On May 15, 2025, a sudden loss of generation occurred at 16:59 totaling 682 MW. Frequency declined to 59.939 Hz, ERCOT load was 74,439 MW.
|
Operational Information |
Active |
| May 15, 2025 8:45:59 AM |
The Daily RSASM for 05/15/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 15, 2025 12:00:52 AM |
No sudden loss of generation greater than 450 MW occurred on May 14, 2025.
|
Operational Information |
Active |
| May 14, 2025 8:47:05 AM |
The Daily RSASM for 05/14/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 14, 2025 12:10:07 AM |
No sudden loss of generation greater than 450 MW occurred on May 13, 2025.
|
Operational Information |
Active |
| May 13, 2025 12:32:33 PM |
ERCOT has cancelled the following notice: At 08:35, ERCOT is issuing a OCN for manual action taken on the Panhandle IROL due to topology change.
|
OCN |
Cancelled |
| May 13, 2025 8:47:18 AM |
The Daily RSASM for 05/13/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 13, 2025 12:00:03 AM |
No sudden loss of generation greater than 450 MW occurred on May 12, 2025.
|
Operational Information |
Active |
| May 12, 2025 8:47:08 AM |
The Daily RSASM for 05/12/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 12, 2025 12:02:15 AM |
No sudden loss of generation greater than 450 MW occurred on May 11, 2025.
|
Operational Information |
Active |
| May 11, 2025 3:00:34 PM |
ERCOT is issuing an Advisory for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Tuesday May 13, 2025 to Friday, May 16, 2025.
|
Advisory |
Active |
| May 11, 2025 3:00:08 PM |
ERCOT has cancelled the following notice: ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Tuesday May 13, 2025 to Sunday May 18, 2025.
|
OCN |
Cancelled |
| May 11, 2025 8:46:31 AM |
The Daily RSASM for 05/11/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 11, 2025 7:17:51 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [06:50] for operating day [05/11/2025] for:
ECRS – 3.8 MW HE 11, 8 MW HE 18, 8 MW HE 20, 3.8 MW HE 21.
|
Operational Information |
Cancelled |
| May 11, 2025 6:13:22 AM |
ERCOT will execute a SASM at [06:50] for operating day [05/11/2025] for:
ECRS – 3.8 MW HE 11, 8 MW HE 18, 8 MW HE 20, 3.8 MW HE 21.
|
Operational Information |
Active |
| May 11, 2025 12:02:53 AM |
No sudden loss of generation greater than 450 MW occurred on May 10, 2025.
|
Operational Information |
Active |
| May 10, 2025 2:16:11 PM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [13:30] for operating day [05/10/2025] for:
RRS – 46 MW HE 17 - 19
NONSPIN – 35.8 MW HE 17-19, 25 MW HE 20, 15 MW HE 21
ECRS – 60 MW HE 17 - 19
|
Operational Information |
Cancelled |
| May 10, 2025 12:57:44 PM |
ERCOT will execute a SASM at [13:30] for operating day [05/10/2025] for:
RRS – 46 MW HE 17 - 19
NONSPIN – 35.8 MW HE 17-19, 25 MW HE 20, 15 MW HE 21
ECRS – 60 MW HE 17 - 19
|
Operational Information |
Active |
| May 10, 2025 8:46:33 AM |
The Daily RSASM for 05/10/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 10, 2025 12:02:27 AM |
No sudden loss of generation greater than 450 MW occurred on May 9, 2025.
|
Operational Information |
Active |
| May 9, 2025 10:00:26 AM |
ERCOT is issuing an OCN for the extreme hot weather with forecasted temperatures to be above 94°F in the North Central and South Central weather zones, from Tuesday May 13, 2025 to Sunday May 18, 2025.
|
OCN |
Active |
| May 9, 2025 8:46:24 AM |
The Daily RSASM for 05/09/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 9, 2025 3:47:29 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 9, 2025 3:45:41 AM |
ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor.
|
Operational Information |
Active |
| May 9, 2025 3:37:13 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 03:20 for operating day 05/09/25 this is for REGUP HE 6-17 9MW each hour. REGDOWN HE6 4.1MW HE7 4MW HE8 4.1MW HE9 4MW HE10 4.6MW HE11 4.5MW HE12 4.1MW HE13 4MW HE14 4.1MW HE15 4MW HE16 4.1MW HE17 4MW. RRS HE6-17 19.2MW each hour.
|
Operational Information |
Cancelled |
| May 9, 2025 2:54:56 AM |
ERCOT will execute a SASM at 03:20 for operating day 05/09/25 this is for REGUP HE 6-17 9MW each hour. REGDOWN HE6 4.1MW HE7 4MW HE8 4.1MW HE9 4MW HE10 4.6MW HE11 4.5MW HE12 4.1MW HE13 4MW HE14 4.1MW HE15 4MW HE16 4.1MW HE17 4MW. RRS HE6-17 19.2MW each hour.
|
Operational Information |
Active |
| May 9, 2025 12:01:03 AM |
No sudden loss of generation greater than 450 MW occurred on May 8, 2025.
|
Operational Information |
Active |
| May 8, 2025 3:55:07 PM |
ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop.
|
Operational Information |
Active |
| May 8, 2025 8:46:46 AM |
The Daily RSASM for 05/08/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 8, 2025 8:35:42 AM |
At 08:35, ERCOT is issuing a OCN for manual action taken on the Panhandle IROL due to topology change.
|
OCN |
Active |
| May 8, 2025 12:00:36 AM |
No sudden loss of generation greater than 450 MW occurred on May 7, 2025.
|
Operational Information |
Active |
| May 7, 2025 8:46:00 AM |
The Daily RSASM for 05/07/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 7, 2025 12:04:54 AM |
On May 6, 2025, a sudden loss of generation occurred at 10:44 totaling 570 MW. Frequency declined to 59.933 Hz, ERCOT load was 51,116 MW.
|
Operational Information |
Active |
| May 6, 2025 8:45:57 AM |
The Daily RSASM for 05/06/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 6, 2025 12:05:32 AM |
No sudden loss of generation greater than 450 MW occurred on May 5, 2025.
|
Operational Information |
Active |
| May 5, 2025 8:46:02 AM |
The Daily RSASM for 05/05/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 5, 2025 2:42:18 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at [01:50] for operating day [05/05/2025] for:
REGDN – 9.4 MW HE 4, 9.1 MW HE 5, 9.4 MW HE 6, 9.1 MW HE 7, 9.4 MW HE 8, 9.1 MW HE 9, 10.7 MW HE 10, 10.3 MW HE 11, 9.4 MW HE 12
REGUP – 15 MW HE 4 - 12
|
Operational Information |
Cancelled |
| May 5, 2025 1:14:33 AM |
ERCOT will execute a SASM at [01:50] for operating day [05/05/2025] for:
REGDN – 9.4 MW HE 4, 9.1 MW HE 5, 9.4 MW HE 6, 9.1 MW HE 7, 9.4 MW HE 8, 9.1 MW HE 9, 10.7 MW HE 10, 10.3 MW HE 11, 9.4 MW HE 12
REGUP – 15 MW HE 4 - 12
|
Operational Information |
Active |
| May 5, 2025 12:00:47 AM |
No sudden loss of generation greater than 450 MW occurred on May 4, 2025.
|
Operational Information |
Active |
| May 4, 2025 8:46:32 AM |
The Daily RSASM for 05/04/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 4, 2025 12:01:25 AM |
No sudden loss of generation greater than 450 MW occurred on May 3, 2025.
|
Operational Information |
Active |
| May 3, 2025 10:39:56 PM |
ERCOT has cancelled the following notice: ERCOT has been notified that the Railroad DC Tie has been derated to 150 MW Import/Export due to DC Tie unable to ramp until 05/3/2025 at 23:59.
|
Operational Information |
Cancelled |
| May 3, 2025 8:46:30 PM |
ERCOT has been notified that the Railroad DC Tie has been derated to 150 MW Import/Export due to DC Tie unable to ramp until 05/3/2025 at 23:59.
|
Operational Information |
Active |
| May 3, 2025 8:46:34 AM |
The Daily RSASM for 05/03/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 3, 2025 12:16:48 AM |
No sudden loss of generation greater than 450 MW occurred on May 2, 2025.
|
Operational Information |
Active |
| May 2, 2025 3:33:25 PM |
ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie will be unavailable from
04/14/2025 07:30 through 05/02/2025 16:00 due to a planned outage.
|
Operational Information |
Cancelled |
| May 2, 2025 3:33:17 PM |
ERCOT has cancelled the following notice: The DC_R (Railroad) DC Tie will be unavailable from
04/14/2025 07:30 through 05/02/2025 16:00 due to a planned outage.
|
Operational Information |
Cancelled |
| May 2, 2025 9:59:01 AM |
ERCOT has cancelled the following notice: ERCOT will execute a SASM at 09:40 for operating day 05/02/25 for HE 12-17 for RRS 19.2MW.
|
Operational Information |
Cancelled |
| May 2, 2025 9:58:56 AM |
ERCOT will execute a SASM at 09:40 for operating day 05/02/25 for HE 12-17 for RRS 19.2MW.
|
Operational Information |
Active |
| May 2, 2025 8:46:56 AM |
The Daily RSASM for 05/02/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 2, 2025 8:22:59 AM |
The DC_E (East) DC Tie will be unavailable from
10/26/2024 00:00 through 09/15/2025 12:00 due to a forced outage.
|
Operational Information |
Active |
| May 2, 2025 8:19:19 AM |
ERCOT has cancelled the following notice: The DC_E (East) DC Tie will be unavailable from
10/26/2024 11:24 through 06/13/2025 23:59 due to a forced outage.
|
Operational Information |
Cancelled |
| May 2, 2025 12:09:36 AM |
No sudden loss of generation greater than 450 MW occurred on May 1, 2025.
|
Operational Information |
Active |
| May 1, 2025 5:03:29 PM |
ERCOT has cancelled the following notice: At 3:25 PM on 5/01/2025, 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 |
| May 1, 2025 9:55:52 AM |
At 3:25 PM on 5/01/2025, 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 |
| May 1, 2025 8:46:02 AM |
The Daily RSASM for 05/01/2025 will not be occurring due to zero participating QSEs.
|
Operational Information |
Active |
| May 1, 2025 12:10:36 AM |
No sudden loss of generation greater than 450 MW occurred on April 30, 2025.
|
Operational Information |
Active |
