| May 20, 2026 12:16:41 AM |
No sudden loss of generation greater than 450 MW occurred on May 19, 2026.
|
Operational Information |
Active |
| May 20, 2026 12:15:17 AM |
ERCOT has cancelled the following notice: The DC_L (Laredo VFT) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to
a planned or unplanned outage
|
DC Tie Curtailment Notice |
Cancelled |
| May 19, 2026 1:31:14 PM |
ERCOT has cancelled the following notice: The DC_L (Laredo VFT) DC Tie will be unavailable from
05/19/2026 07:00 through 05/19/2026 12:00 due to a planned outage.
|
Operational Information |
Cancelled |
| May 19, 2026 11:11:47 AM |
The DC_L (Laredo VFT) DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to
a planned or unplanned outage
|
DC Tie Curtailment Notice |
Active |
| May 19, 2026 11:10:46 AM |
The DC_L (Laredo VFT) DC Tie will be unavailable from
05/19/2026 07:00 through 05/22/2026 17:00 due to a forced outage.
|
Operational Information |
Active |
| May 19, 2026 6:52:47 AM |
The DC_L (Laredo VFT) DC Tie will be unavailable from
05/19/2026 07:00 through 05/19/2026 12:00 due to a planned outage.
|
Operational Information |
Active |
| May 19, 2026 2:14:06 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 19, 2026 12:16:36 AM |
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 |
| May 19, 2026 12:03:13 AM |
No sudden loss of generation greater than 450 MW occurred on May 18, 2026.
|
Operational Information |
Active |
| May 18, 2026 12:02:04 AM |
No sudden loss of generation greater than 450 MW occurred on May 17, 2026.
|
Operational Information |
Active |
| May 17, 2026 1:29:54 PM |
ERCOT has identified the following MIS posting as delayed for Operating Day 05/18/2026: DAM Shift Factors. The report will be published after 13:30.
|
Operational Information |
Active |
| May 17, 2026 12:00:55 AM |
No sudden loss of generation greater than 450 MW occurred on May 16, 2026.
|
Operational Information |
Active |
| May 16, 2026 12:01:11 AM |
No sudden loss of generation greater than 450 MW occurred on May 15, 2026.
|
Operational Information |
Active |
| May 15, 2026 5:53:08 PM |
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 15, 2026 5:36:28 PM |
ERCOT is taking manual action for an unsolved contingency in the Taylor County area.
|
Operational Information |
Active |
| May 15, 2026 2:05:30 PM |
ERCOT has cancelled the following notice: ERCOT is taking manual action for an unsolved contingency in the Taylor County area.
|
Operational Information |
Cancelled |
| May 15, 2026 12:04:38 PM |
ERCOT is taking manual action for an unsolved contingency in the Taylor County area.
|
Operational Information |
Active |
| May 15, 2026 3:58:46 AM |
ERCOT will be working from the primary control center until further notice, use the OPX numbers for Taylor.
|
Operational Information |
Active |
| May 15, 2026 12:06:33 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 15, 2026 12:06:05 AM |
No sudden loss of generation greater than 450 MW occurred on May 14, 2026.
|
Operational Information |
Active |
| May 14, 2026 4:00:05 PM |
ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop.
|
Operational Information |
Active |
| May 14, 2026 3:06:51 PM |
ERCOT is taking manual action for an unsolved contingency in the Taylor County area.
|
Operational Information |
Active |
| May 14, 2026 9:56:53 AM |
ERCOT has cancelled the following notice: ERCOT is taking manual actions to pre-posture for a 345 KV outage in the Upton County area.
|
Operational Information |
Cancelled |
| May 14, 2026 9:03:54 AM |
ERCOT is taking manual actions to pre-posture for a 345 KV outage in the Upton County area.
|
Operational Information |
Active |
| May 14, 2026 12:02:30 AM |
No sudden loss of generation greater than 450 MW occurred on May 13, 2026.
|
Operational Information |
Active |
| May 13, 2026 10:48:37 AM |
The DC_L (Laredo VFT) DC Tie will be unavailable from
05/19/2026 07:00 through 05/19/2026 12:00 due to a planned outage.
|
Operational Information |
Active |
| May 13, 2026 12:08:57 AM |
No sudden loss of generation greater than 450 MW occurred on May 12, 2026.
|
Operational Information |
Active |
| May 12, 2026 8:16:07 PM |
At 20:15, All Non-Spin has been recalled.
|
Operational Information |
Active |
| May 12, 2026 8:15:25 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 0.0, BEGIN_TIME: 2026-05-12 20:15:25, END_TIME: 2026-05-12 20:15:25, DURATION: 0 HRS 0 MINS;
|
Operational Information |
|
| May 12, 2026 7:21:28 PM |
At 19:20 approximately 456 MW of Non-Spin has been deployed, anticipated duration is 23:59:59.
|
Operational Information |
Active |
| May 12, 2026 7:20:28 PM |
CM-ASM-NOTF AS_TYPE: Non-Spin, DEPLOY_MW: 456.6, BEGIN_TIME: 2026-05-12 19:20:28, END_TIME: 2026-05-12 23:20:28, DURATION: 4 HRS 0 MINS;
|
Operational Information |
|
| May 12, 2026 10:48:11 AM |
ERCOT Emergency Base Points are Disabled
|
Operational Information |
Cancelled |
| May 12, 2026 10:45:05 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 |
| May 12, 2026 10:37:27 AM |
ERCOT Emergency Base Points are Enabled
|
Operational Information |
Active |
| May 12, 2026 10:30:09 AM |
At 10:30, ERCOT is conducting an unannounced Constant Frequency Control test and has placed a QSE on Constant Frequency.
|
Operational Information |
Active |
| May 12, 2026 12:01:11 AM |
No sudden loss of generation greater than 450 MW occurred on May 11, 2026.
|
Operational Information |
Active |
| 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 |
