Operations Messages
This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. (Subscribe to Operations Messages 
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| Date | Message | Type | Status |
|---|---|---|---|
| May 22 2019 08:46:16 CST | The Daily RSASM for Wednesday, May 22, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 22 2019 01:05:44 CST | ERCOT has cancelled the following notice: 23:56 ERCOT will be preforming a database load on its Energy and Market Management System. | Operational Information | Cancelled |
| May 22 2019 01:05:36 CST | No sudden loss of generation greater than 450 MW occurred on May 21, 2019. | Operational Information | Active |
| May 21 2019 23:48:29 CST | 23:56 ERCOT will be preforming a database load on its Energy and Market Management System. | Operational Information | Active |
| May 21 2019 23:46:39 CST | ERCOT has cancelled the following notice: 23:56 ERCOT will be preforming a database load on their Energy Management System. | Operational Information | Cancelled |
| May 21 2019 23:41:31 CST | 23:56 ERCOT will be preforming a database load on their Energy Management System. | Operational Information | Active |
| May 21 2019 20:53:48 CST | ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 00:00 05/21/2019 through 23:59 05/21/2019 due to a forced outage. | Operational Information | Cancelled |
| May 21 2019 08:46:47 CST | The Daily RSASM for Tuesday, May 21, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 21 2019 00:20:47 CST | On 05/20/2019, a sudden loss of generation occurred at 13:51 totaling 479 MW. Frequency declined to 59.935 Hz, ERCOT load was 56, 095 MW. | Operational Information | Active |
| May 21 2019 00:13:06 CST | DC Tie Outage: The North DC Tie will be unavailable from 00:00 05/21/2019 through 23:59 05/21/2019 due to a forced outage. | Operational Information | Active |
| May 20 2019 11:48:41 CST | ERCOT has cancelled the following notice: The DC_S Eagel Pass DC Tie will be unavailable from 08:04 05/19/2019 through 12:00 05/20/2019 due to a forced outage. | Operational Information | Cancelled |
| May 20 2019 08:46:29 CST | The Daily RSASM for Monday, May 20, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 20 2019 00:16:43 CST | No sudden loss of generation greater than 450 MW occurred on May 19, 2019. | Operational Information | Active |
| May 19 2019 08:49:21 CST | The Daily RSASM for Sunday, May 19, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 19 2019 08:20:21 CST | DC Tie Outage: The DC_S Eagel Pass DC Tie will be unavailable from 08:04 05/19/2019 through 12:00 05/20/2019 due to a forced outage. | Operational Information | Active |
| May 19 2019 01:27:49 CST | ERCOT has cancelled the following notice: ERCOT is bypassing the GAUSS_C1 for SSR mitigation. | Operational Information | Cancelled |
| May 19 2019 00:05:22 CST | On 05/18/2019, a sudden loss of generation occurred at 15:25 totaling 727MW. Frequency declined to 59.871 Hz, ERCOT load was 45, 598 MW. | Operational Information | Active |
| May 18 2019 15:27:30 CST | ERCOT Responsive Reserve Has Been Recalled | Operational Information | Cancelled |
| May 18 2019 15:25:02 CST | ERCOT Responsive Reserve Has Been Deployed | Operational Information | Active |
| May 18 2019 08:47:01 CST | The Daily RSASM for Saturday, May 18, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 18 2019 07:34:02 CST | ERCOT is bypassing the GAUSS_C1 for SSR mitigation. | Operational Information | Active |
| May 18 2019 01:07:04 CST | No sudden loss of generation greater than 450 MW occurred on May 17, 2019. | Operational Information | Active |
| May 17 2019 08:47:47 CST | The Daily RSASM for Friday, May 17, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 17 2019 00:34:07 CST | On May 16, 2019, a sudden loss of generation occurred at 21:42 totaling 499 MW. Frequency declined to 59.910 Hz, ERCOT load was 47, 899 MW. | Operational Information | Active |
| May 16 2019 13:43:35 CST | The WIRTZ RAS has been taken out of service/removed from RTCA. | Operational Information | Active |
| May 16 2019 08:46:25 CST | The Daily RSASM for Thursday, May 16, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 16 2019 00:20:27 CST | No sudden loss of generation greater than 450 MW occurred on May 15, 2019. | Operational Information | Active |
| May 15 2019 16:52:15 CST | The WIRTZ RAS has returned to service | Operational Information | Active |
| May 15 2019 08:45:58 CST | The Daily RSASM for Wednesday May 15, 2019 will not be occurring due to zero participating QSEs | Operational Information | Active |
| May 15 2019 00:16:58 CST | No sudden loss of generation greater than 450 MW occurred on May 14, 2019. | Operational Information | Active |
| May 15 2019 00:09:34 CST | ERCOT has cancelled the following notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. | DC Tie Curtailment Notice | Cancelled |
| May 14 2019 22:34:20 CST | DC Tie Curtailment Notice: The Laredo DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. | DC Tie Curtailment Notice | Active |
| May 14 2019 16:25:33 CST | DC_L Tie has a limit of 90MW until further notice. | Operational Information | Active |
| May 14 2019 13:46:30 CST | DAM is complete, DRUC will begin at 14:45 | Operational Information | Active |
| May 14 2019 13:25:50 CST | ERCOT has postponed the deadline for posting of the DAM Solution for Operating Day May 15th, 2019 due to an internal issue, which is being resolved. The delay is anticipated for 15 minutes. | Advisory | Active |
| May 14 2019 08:48:33 CST | The Daily RSASM for Tuesday May 14, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 14 2019 07:05:53 CST | ERCOT has cancelled the following notice: Advisory issued for a geomagnetic disturbance of K-7 until May 14, 2019 1200 UTC. | Operational Information | Cancelled |
| May 14 2019 04:21:09 CST | Advisory issued for a geomagnetic disturbance of K-7 until May 14, 2019 1200 UTC. | Operational Information | Active |
| May 14 2019 04:19:53 CST | ERCOT has cancelled the following notice: The Space Weather Prediction Center has issued a GMD Alert of K-7 until May 14, 2019 @ 1200 UTC. | Operational Information | Cancelled |
| May 14 2019 03:58:01 CST | The Space Weather Prediction Center has issued a GMD Alert of K-7 until May 14, 2019 @ 1200 UTC. | Operational Information | Active |
| May 14 2019 00:47:33 CST | No sudden loss of generation greater than 450 MW occurred on May 13, 2019. | Operational Information | Active |
| May 13 2019 16:35:23 CST | ERCOT has cancelled the following notice: At 3:25 PM on 05/13/2019, 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 13 2019 10:10:34 CST | At 3:25 PM on 05/13/2019, 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 13 2019 08:47:52 CST | The Daily RSASM for Monday May 13, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 13 2019 00:21:49 CST | No sudden loss of generation greater than 450 MW occurred on May 12, 2019. | Operational Information | Active |
| May 12 2019 08:58:39 CST | ERCOT Responsive Reserve Has Been Recalled | Operational Information | Cancelled |
| May 12 2019 08:57:23 CST | ERCOT Responsive Reserve Has Been Deployed | Operational Information | Active |
| May 12 2019 08:53:31 CST | The Daily RSASM for Sunday May 12, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 12 2019 00:57:58 CST | No sudden loss of generation greater than 450 MW occurred on May 11, 2019. | Operational Information | Active |
| May 11 2019 22:14:45 CST | ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 08:00 05/10/2019 through 17:00 05/11/2019 due to a planned outage. | Operational Information | Cancelled |
| May 11 2019 14:14:01 CST | ERCOT has cancelled the following notice: The Railroad DC Tie will be unavailable from 08:00 05/10/2019 through 17:00 05/11/2019 due to a planned outage. | Operational Information | Cancelled |
| May 11 2019 08:48:36 CST | The Daily RSASM for Saturday May 11, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 11 2019 01:16:16 CST | No sudden loss of generation greater than 450 MW occurred on May 10, 2019. | Operational Information | Active |
| May 11 2019 01:00:35 CST | ERCOT will execute a SASM at 01:35 for operating day Saturday, MAY 11, 2019 for 2MW of REGUP for HE06 through 10 and HE16 through 18. | Operational Information | Active |
| May 10 2019 08:47:29 CST | The Daily RSASM for Friday May 10, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 10 2019 04:21:26 CST | ERCOT is working from the Primary Control Center until further notice, use the OPX number for Taylor. | Operational Information | Active |
| May 10 2019 04:20:35 CST | 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 10 2019 00:01:02 CST | No sudden loss of generation greater than 450 MW occurred on May 9, 2019. | Operational Information | Active |
| May 09 2019 16:23:29 CST | ERCOT will be working from the alternate control center until further notice, use the OPX numbers for Bastrop. | Operational Information | Active |
| May 09 2019 08:48:06 CST | The Daily RSASM for Thursday May 9, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 09 2019 00:27:19 CST | No sudden loss of generation greater than 450 MW occurred on May 8, 2019. | Operational Information | Active |
| May 08 2019 08:47:12 CST | The Daily RSASM for Wednesday, May 8, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 08 2019 00:17:01 CST | No sudden loss of generation greater than 450 MW occurred on May 7, 2019. | Operational Information | Active |
| May 07 2019 14:14:01 CST | ERCOT has cancelled the following notice: The Railroad DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. | DC Tie Curtailment Notice | Cancelled |
| May 07 2019 12:20:17 CST | DC Tie Curtailment Notice: The Railroad DC Tie is being curtailed, a DC Tie Curtailment Notice (DCTCN) is active due to one or more transmission security violations that would be fully or partially resolved by the curtailment of DC Tie Load. | DC Tie Curtailment Notice | Active |
| May 07 2019 08:50:16 CST | The Daily RSASM for Tuesday, May 7, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 07 2019 00:14:09 CST | No sudden loss of generation greater than 450 MW occurred on May 6, 2019. | Operational Information | Active |
| May 06 2019 13:21:48 CST | ERCOT has cancelled the following notice: The Eagle Pass 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 06 2019 13:21:34 CST | ERCOT has cancelled the following notice: The The Eagle Pass DC Tie will be unavailable from 06:30 05/06/2019 through 13:00 05/06/2019 due to a forced outage. DC Tie will be unavailable from 06:30 05/06/2019 through 13:00 05/06/2019 due to a planned outage. | Operational Information | Cancelled |
| May 06 2019 10:49:42 CST | DC Tie Outage: The Railroad DC Tie will be unavailable from 08:00 05/10/2019 through 17:00 05/11/2019 due to a planned outage. | Operational Information | Active |
| May 06 2019 08:47:34 CST | The Daily RSASM for Monday, May 6, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 06 2019 06:42:23 CST | ERCOT has cancelled the following notice: The Eagle Pass DC Tie will be unavailable from 02:43 05/06/2019 through 10:00 05/06/2019 due to a forced outage. | Operational Information | Cancelled |
| May 06 2019 06:41:40 CST | DC Tie Outage: The The Eagle Pass DC Tie will be unavailable from 06:30 05/06/2019 through 13:00 05/06/2019 due to a forced outage. DC Tie will be unavailable from 06:30 05/06/2019 through 13:00 05/06/2019 due to a planned outage. | Operational Information | Active |
| May 06 2019 03:06:46 CST | DC Tie Curtailment Notice: The Eagle Pass 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 06 2019 02:59:10 CST | DC Tie Outage: The Eagle Pass DC Tie will be unavailable from 02:43 05/06/2019 through 10:00 05/06/2019 due to a forced outage. | Operational Information | Active |
| May 06 2019 02:21:34 CST | No sudden loss of generation greater than 450 MW occurred on May 5, 2019. | Operational Information | Active |
| May 05 2019 18:31:43 CST | ERCOT has cancelled the following notice: ERCOT is issuing a Watch due to DRUC not completing by 1800 due to delay of the Day Ahead Market. | Watch | Cancelled |
| May 05 2019 18:31:39 CST | ERCOT has cancelled the following notice: At 16:52 ERCOT cancelled the Advisory for the Day Ahead Market timeline deviation. | Advisory | Cancelled |
| May 05 2019 17:36:16 CST | At 16:52 ERCOT cancelled the Advisory for the Day Ahead Market timeline deviation. | Advisory | Active |
| May 05 2019 17:04:58 CST | ERCOT is issuing a Watch due to DRUC not completing by 1800 due to delay of the Day Ahead Market. | Watch | Active |
| May 05 2019 13:25:38 CST | ERCOT has postponed the deadline for the posting of the DAM solution for Operating Day May 6th, 2019 due to an internal issue, which is under investigation. | Advisory | Active |
| May 05 2019 08:46:26 CST | The Daily RSASM for Sunday, May 5, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 05 2019 00:05:19 CST | No sudden loss of generation greater than 450 MW occurred on May 4, 2019. | Operational Information | Active |
| May 04 2019 08:46:41 CST | The Daily RSASM for Saturday, May 4, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 04 2019 03:15:56 CST | No sudden loss of generation greater than 450 MW occurred on May 3, 2019. | Operational Information | Active |
| May 03 2019 14:29:31 CST | DC Tie Outage: The Railroad DC Tie will be unavailable from 08:00 05/10/2019 through 17:00 05/11/2019 due to a planned outage. | Operational Information | Active |
| May 03 2019 08:46:27 CST | The Daily RSASM for Friday, May 3, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 03 2019 04:11:00 CST | ERCOT has cancelled the following notice: ERCOT will execute a SASM at 19:50 for operating day Wednesday, 5/01/2019 for 15 MW REGUP for HE 22, 23 and 24. | Operational Information | Cancelled |
| May 03 2019 00:10:55 CST | No sudden loss of generation greater than 450 MW occurred on May 2, 2019. | Operational Information | Active |
| May 02 2019 15:45:05 CST | No sudden loss of generation greater than 450 MW occurred on May 1, 2019. | Operational Information | Active |
| May 02 2019 09:26:51 CST | ERCOT has cancelled the following notice: ERCOT is taking manual action due to planned outages in the Fort Stockton area. Action taken to mitigate unsolved contingency SPIGSOL | Operational Information | Cancelled |
| May 02 2019 09:22:06 CST | ERCOT has cancelled the following notice: ERCOT is taking manual action due to planned outages in the Fort Stockton area. Action taken to mitigate unsolved contingency SPIGSOL | Operational Information | Cancelled |
| May 02 2019 09:17:57 CST | An OCN has been issued due to ERCOT modifying a Generic Transmission Constraint due to dynamic voltage stability issues that become more limiting than steady state voltage issues, under Transmission Outage conditions for the Panhandle Generic Transmission Constraint (GTC). | Operational Information | Active |
| May 02 2019 09:12:36 CST | ERCOT is taking manual action due to planned outages in the Fort Stockton area. Action taken to mitigate unsolved contingency SPIGSOL | Operational Information | Active |
| May 02 2019 08:46:50 CST | The Daily RSASM for Thursday, May 2, 2019 will not be occurring due to zero participating QSEs. | Operational Information | Active |
| May 02 2019 05:18:43 CST | No sudden loss of generation greater than 450 MW occurred on May 2, 2019. | Operational Information | Active |
| May 01 2019 19:29:04 CST | ERCOT will execute a SASM at 19:50 for operating day Wednesday, 5/01/2019 for 15 MW REGUP for HE 22, 23 and 24. | Operational Information | Active |
| May 01 2019 10:20:19 CST | ERCOT Responsive Reserve Has Been Recalled | Operational Information | Cancelled |
| May 01 2019 10:17:51 CST | ERCOT Responsive Reserve Has Been Deployed | Operational Information | Active |
| May 01 2019 08:51:44 CST | The Daily RSASM for Wednesday May 01, 2019 did not occur due to zero participating QSEs | Operational Information | Active |
| May 01 2019 00:06:23 CST | ERCOT Emergency Base Points are Disabled | Operational Information | Cancelled |
| May 01 2019 00:04:53 CST | On April 30, 2019, a sudden loss of generation occurred at 09:37 totaling 575 MW. Frequency declined to 59.866 Hz, ERCOT load was 42, 280 MW. Another sudden loss of generation occurred at 21:11 totaling 602 MW. Frequency declined to 59.870 Hz, ERCOT load was 48, 561 MW. | Operational Information | Active |
| May 01 2019 00:02:23 CST | ERCOT Emergency Base Points are Enabled | Operational Information | Active |