Operations Messages |
This section contains important messages from the ERCOT Control Room. Refresh this screen to see current operation messages. (Subscribe to Operations Messages 
RSS feed.)
| May 2013 | Apr 2013 | Mar 2013 | Feb 2013 | Jan 2013 | Dec 2012 |
| Date | Message | Type | Status | |
|---|---|---|---|---|
| Jan 31 2012 16:59:43 CST | ERCOT has cancelled the following notice: The Railroad HVDC Tie (DC_Road) Will be out of service Saturday 01/28/12 from 009:00 until 13:00 for planned maintenace. | Operational Information | Cancelled | |
| Jan 31 2012 09:00:40 CST | ERCOT has cancelled the following notice: ERCOT is taking manual action for DTRSENT5 contingency due to a planned outage. | Operational Information | Cancelled | |
| Jan 31 2012 08:03:25 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 31 2012 05:43:04 CST | DAM OD 2/1/2012 will be using a Valley Import limit value of 400MW for all hours. | OCN | Active | |
| Jan 31 2012 05:42:59 CST | No sudden loss of generation greater than 450 MW occurred on 01/30/12 | Operational Information | Active | |
| Jan 31 2012 05:39:56 CST | DAM OD 2/1/2012 will be using West to North (W_TO_N) generic constraint limits of 2143 MW for HE 1-7, 9-12, 23, 24 and 1568 MW for HE 8, 13-22. | OCN | Active | |
| Jan 31 2012 05:05:03 CST | ERCOT is taking manual action for DTRSENT5 contingency due to a planned outage. | Operational Information | Active | |
| Jan 31 2012 05:03:14 CST | ERCOT has cancelled the following notice: ERCOT is taking manual actions for SSACSUN8 constraint. | Operational Information | Cancelled | |
| Jan 30 2012 21:16:57 CST | ERCOT is taking manual actions for SSACSUN8 constraint. | Operational Information | Active | |
| Jan 30 2012 07:52:15 CST | No sudden loss of generation greater than 450 MW occurred on 01/29/12 | Operational Information | Active | |
| Jan 30 2012 06:02:42 CST | DAM OD 01/31/2012 will be using a Valley Import limit value of 400MW for all hours. | OCN | Active | |
| Jan 30 2012 05:51:17 CST | DAM OD 01/31/2012 will be using West to North (W_TO_N) generic constraint limits of 2144 MW for HE 1-6, 23-24 and 1569 MW for HE 7-22. | OCN | Active | |
| Jan 29 2012 19:55:41 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 29 2012 08:10:51 CST | No sudden loss of generation greater than 450 MW occurred on 01/28/12 | Operational Information | Active | |
| Jan 29 2012 06:36:23 CST | Corection: DAM OD 01/30/2012 will be using a Valley Import limit value of 1100 MW for hours 1-7 and 400MW for hours 8-24. | OCN | Active | |
| Jan 29 2012 05:58:24 CST | DAM OD 01/30/2012 will be using a Valley Import limit value of 400MW for all hours. | OCN | Active | |
| Jan 29 2012 05:33:04 CST | DAM OD 01/30/2012 will be using West to North (W_TO_N) generic constraint limits of 2144 MW for HE 1-4, 23, 24 and 1569 MW for HE 5-22. | OCN | Active | |
| Jan 28 2012 07:00:15 CST | No sudden loss of generation greater than 450 MW occurred on 01/27/12 | Operational Information | Active | |
| Jan 28 2012 05:34:36 CST | DAM OD 01/29/2012 will be using West to North (W_TO_N) generic constraint limits of 1569 MW for HE 1-14, 19-23 and 2144 MW for HE 15-18, 24. | OCN | Active | |
| Jan 27 2012 13:29:51 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 27 2012 08:46:20 CST | The Railroad HVDC Tie (DC_Road) Will be out of service Saturday 01/28/12 from 009:00 until 13:00 for planned maintenace. | Operational Information | Active | |
| Jan 27 2012 06:32:54 CST | No sudden loss of generation greater than 450 MW occurred on 01/26/12. | Operational Information | Active | |
| Jan 27 2012 04:10:01 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 26 2012 08:57:08 CST | ERCOT has cancelled the following notice: The Barney Davis SPS has been taken out of service. | Operational Information | Cancelled | |
| Jan 26 2012 08:42:46 CST | On 01/25/12, a sudden loss of generation occurred at 01:13 totaling 478 MW. Frequency declined to 59.898 HZ, ERCOT load was 25, 949 MW. | Operational Information | Active | |
| Jan 26 2012 05:55:19 CST | ERCOT has cancelled the following notice: The North DC Tie will be unavailable from 01/24/2012 through 01/24/2012 due to a planned outage. | Operational Information | Cancelled | |
| Jan 26 2012 05:54:40 CST | ERCOT has cancelled the following notice: The North HVDC Tie (DCTM) Will be out of service Tuesday 01/24/12 from 07:00 until 17:00 for planned maintenace. | Operational Information | Cancelled | |
| Jan 26 2012 05:41:41 CST | DAM OD 01/27/2012 will be using West to North (W_TO_N) generic constraint limits of 2142 MW for HE 1-5, 23-24 and 1568 MW for HE 6-22. | OCN | Active | |
| Jan 25 2012 23:19:15 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Jan 25 2012 17:44:49 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Active | |
| Jan 25 2012 16:35:52 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 25 2012 12:41:46 CST | ERCOT has cancelled the following notice: Possible Geomagnetic Disturbance with K-indices of 6 to 9, begining January 24, 2012 starting 0600, give or take about 6 hours for a duration of 24 to 36 hours. | Operational Information | Cancelled | |
| Jan 25 2012 11:05:07 CST | The Barney Davis SPS has been taken out of service. | Operational Information | Active | |
| Jan 25 2012 06:48:53 CST | No sudden loss of generation greater than 450 MW occurred on 01/24/12. | Operational Information | Active | |
| Jan 25 2012 05:10:18 CST | DAM OD 01/26/2012 will be using West to North (W_TO_N) generic constraint limits of 2132 MW for HE 1-6, 24 and 1560 MW for HE 7-23. | OCN | Active | |
| Jan 25 2012 03:16:39 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 24 2012 09:03:50 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 24 2012 07:28:35 CST | On 01/23/12, a sudden loss of generation occurred at 23:47 totaling 620 MW. Frequency declined to 59.822 HZ, ERCOT load was 27, 900 MW. | Operational Information | Active | |
| Jan 24 2012 05:26:31 CST | DAM OD 01/25/2012 will be using West to North (W_TO_N) generic constraint limits of 2134 MW for HE 1-6, 24 and 1562 MW for HE 7-23. | OCN | Active | |
| Jan 23 2012 20:39:41 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 23 2012 18:11:15 CST | Possible Geomagnetic Disturbance with K-indices of 6 to 9, begining January 24, 2012 starting 0600, give or take about 6 hours for a duration of 24 to 36 hours. | Operational Information | Active | |
| Jan 23 2012 06:50:12 CST | No sudden loss of generation greater than 450 MW occurred on 01/22/12. | Operational Information | Active | |
| Jan 23 2012 05:43:30 CST | DAM OD 01/24/2012 will be using West to North (W_TO_N) generic constraint limits of 2133 MW for HE 1-6, 16, 23-24 and 1561 MW for HE 7-15, 17-22. | OCN | Active | |
| Jan 22 2012 18:06:00 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 22 2012 08:12:42 CST | On 01/21/12, a sudden loss of generation occurred at 13:34 totaling 584 MW. Frequency declined to 59.752 HZ, ERCOT load was 31, 275 MW. | Operational Information | Active | |
| Jan 22 2012 05:19:18 CST | DAM OD 01/23/2012 will be using West to North (W_TO_N) generic constraint limits of 2133 MW for HE 1-6, 16, 17, 23, 24 and 1561 MW for HE 7-15, 18-22. | OCN | Active | |
| Jan 21 2012 18:43:41 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 21 2012 14:00:51 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Jan 21 2012 08:46:59 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Active | |
| Jan 21 2012 07:35:44 CST | No sudden loss of generation greater than 450 MW occurred on 01/20/12. | Operational Information | Active | |
| Jan 21 2012 05:28:28 CST | DAM OD 01/22/2012 will be using West to North (W_TO_N) generic constraint limit of 2133 MW for hours 1-18, 23, 24 and 1561 MW for hours 19-22. | OCN | Active | |
| Jan 21 2012 05:09:47 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 20 2012 20:58:22 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 20 2012 09:22:10 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 20 2012 07:27:40 CST | No sudden loss of generation greater than 450 MW occurred on 01/19/12. | Operational Information | Active | |
| Jan 20 2012 06:19:47 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 20 2012 05:27:22 CST | DAM OD 01/21/2012 will be using West to North (W_TO_N) generic constraint limit of 2133 MW for hours 1-9, 12-18, and 22-24 and 1561 MW for hours 10, 11, and 19-21. | OCN | Active | |
| Jan 19 2012 08:41:35 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 19 2012 07:27:02 CST | No sudden loss of generation greater than 450 MW occurred on 01/18/12. | Operational Information | Active | |
| Jan 19 2012 05:27:03 CST | DAM OD 01/20/2012 will be using West to North (W_TO_N) generic constraint limit of 2135 MW for hours 1-6, 23-24, and 1563 MW for hours 7-22. | OCN | Active | |
| Jan 18 2012 21:30:25 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 18 2012 14:04:55 CST | The North HVDC Tie (DCTM) Will be out of service Tuesday 01/24/12 from 07:00 until 17:00 for planned maintenace. | Operational Information | Active | |
| Jan 18 2012 13:49:28 CST | DC Tie Outage: The North DC Tie will be unavailable from 01/24/2012 through 01/24/2012 due to a planned outage. | Operational Information | Active | |
| Jan 18 2012 07:49:35 CST | No sudden loss of generation greater than 450 MW occurred on 01/17/12. | Operational Information | Active | |
| Jan 18 2012 05:01:57 CST | DAM OD 01/19/2012 will be using West to North (W_TO_N) generic constraint limit of 2135 MW for hours 1-5 , 24 , 1563 MW for hour 6, 1463 mw for hours 7-22, 1868 mw hour 23. | OCN | Active | |
| Jan 17 2012 19:43:38 CST | ERCOT has cancelled the following notice: ERCOT issued Advisory due to PRC below 3000 MW. | Advisory | Cancelled | |
| Jan 17 2012 18:53:19 CST | ERCOT issued Advisory due to PRC below 3000 MW. | Advisory | Active | |
| Jan 17 2012 10:42:54 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 17 2012 07:46:55 CST | No sudden loss of generation greater than 450 MW occurred on 01/16/12. | Operational Information | Active | |
| Jan 17 2012 06:40:43 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 17 2012 05:03:12 CST | DAM OD 01/18/2012 will be using West to North (W_TO_N) generic constraint limit of 2129 MW for hours 1-4, and 1558 MW for hours 5-24. | OCN | Active | |
| Jan 17 2012 03:09:46 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 16 2012 19:26:17 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 16 2012 15:41:16 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 16 2012 06:34:23 CST | On 1/15/12, a sudden loss of generation occurred at 14:05 totaling 455 MW. Frequency declined to 59.851 HZ, ERCOT load was 29, 659 MW. | Operational Information | Active | |
| Jan 16 2012 04:57:09 CST | DAM OD 01/17/2012 will be using West to North (W_TO_N) generic constraint limit of 2279 MW for hours 1-5, and 1915 MW for hours 6-24. | OCN | Active | |
| Jan 15 2012 07:23:15 CST | No sudden loss of generation greater than 450 MW occurred on 01/14/12. | Operational Information | Active | |
| Jan 15 2012 05:34:07 CST | DAM OD 01/16/2012 will be using West to North (W_TO_N) generic constraint limit of 2279 MW for hours 1-6, 24 and 1915 MW for hours 7-23. | OCN | Active | |
| Jan 14 2012 22:19:39 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 14 2012 08:10:28 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 14 2012 07:48:37 CST | ERCOT has cancelled the following notice: ERCOT is taking manual action for SLOBSAN5 contingency due to a planned outage. | Operational Information | Cancelled | |
| Jan 14 2012 06:46:39 CST | ERCOT is taking manual action for SLOBSAN5 contingency due to a planned outage. | Operational Information | Active | |
| Jan 14 2012 05:43:07 CST | DAM OD 01/15/2012 will be using West to North (W_TO_N) generic constraint limit of 2279 MW for hours 1-4, 12-18, 23, 24 and 1915 MW for hours 5-11, 19-22. | OCN | Active | |
| Jan 14 2012 03:54:49 CST | ERCOT has cancelled the following notice: At 02:41 ERCOT Taking manual Action for the North to Houston Interface | Operational Information | Cancelled | |
| Jan 14 2012 03:53:06 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the North-Houston voltage stability limit. | Operational Information | Cancelled | |
| Jan 14 2012 03:47:26 CST | At 02:41 ERCOT Taking manual Action for the North to Houston Interface | Operational Information | Active | |
| Jan 14 2012 03:42:44 CST | No sudden loss of generation greater than 450 MW occurred on 01/13/12. | Operational Information | Active | |
| Jan 14 2012 03:42:42 CST | ERCOT has cancelled the following notice: ERCOT is deploying non-spin reserve for north-houston interfaceconstraint. | Operational Information | Cancelled | |
| Jan 14 2012 03:41:54 CST | ERCOT has cancelled the following notice: ERCOT IS ISSUING A WATCH FOR THE NORTH-HOUSTON INTERFACE. | Watch | Cancelled | |
| Jan 14 2012 03:28:39 CST | ERCOT is deploying non-spin reserve for north-houston interfaceconstraint. | Operational Information | Active | |
| Jan 14 2012 03:24:21 CST | ERCOT IS ISSUING A WATCH FOR THE NORTH-HOUSTON INTERFACE. | Watch | Active | |
| Jan 14 2012 03:21:34 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the North-Houston voltage stability limit. | Operational Information | Cancelled | |
| Jan 14 2012 03:16:13 CST | North-Houston Voltage Stability Limit: ERCOT is constraining for the North-Houston voltage stability limit. | Operational Information | Active | |
| Jan 14 2012 02:28:49 CST | North-Houston Voltage Stability Limit: ERCOT is constraining for the North-Houston voltage stability limit. | Operational Information | Active | |
| Jan 14 2012 00:46:02 CST | ERCOT has cancelled the following notice: Benbrook SPS has been taken out of Service | Operational Information | Cancelled | |
| Jan 14 2012 00:44:22 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 13 2012 07:15:51 CST | No sudden loss of generation greater than 450 MW occurred on 01/12/12. | Operational Information | Active | |
| Jan 13 2012 05:35:55 CST | DAM OD 01/14/2012 will be using West to North (W_TO_N) generic constraint limit of 1917 MW for hours 1-14, 19-24 and 2280 MW for hours 15-18. | OCN | Active | |
| Jan 13 2012 04:53:36 CST | ERCOT has cancelled the following notice: ERCOT is working from the Alternate control center. | Operational Information | Cancelled | |
| Jan 13 2012 04:52:53 CST | ERCOT is working from the Alternate control center. | Operational Information | Cancelled | |
| Jan 12 2012 16:29:18 CST | ERCOT has cancelled the following notice: The Barney Davis SPS is out of Service | Operational Information | Cancelled | |
| Jan 12 2012 15:11:02 CST | DAM is complete. DRUC will start at 15:55. | Operational Information | Active | |
| Jan 12 2012 07:02:10 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 12 2012 06:12:51 CST | No sudden loss of generation greater than 450 MW occurred on 01/11/12. | Operational Information | Active | |
| Jan 12 2012 06:06:26 CST | DAM OD 01/13/2012 will be using West to North (W_TO_N) generic constraint limit of 1913 MW for hours 1-24. | OCN | Active | |
| Jan 11 2012 13:43:23 CST | Benbrook SPS has been taken out of Service | Operational Information | Active | |
| Jan 11 2012 06:28:29 CST | No sudden loss of generation greater than 450 MW occurred on 01/10/12. | Operational Information | Active | |
| Jan 11 2012 05:39:14 CST | DAM OD 01/12/2012 will be using West to North (W_TO_N) generic constraint limit of 2277 MW for hours 1-5 and 1914 MW for hours 6-24. | OCN | Active | |
| Jan 11 2012 05:26:11 CST | The Barney Davis SPS is out of Service | Operational Information | Active | |
| Jan 10 2012 22:23:15 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 10 2012 17:29:13 CST | No sudden loss of generation greater than 450 MW occurred on 01/09/12. | Operational Information | Active | |
| Jan 10 2012 13:09:07 CST | ERCOT has cancelled the following notice: The Elkton SPS has been taken out of service. | Operational Information | Cancelled | |
| Jan 10 2012 08:13:49 CST | The Elkton SPS has been taken out of service. | Operational Information | Active | |
| Jan 10 2012 05:31:12 CST | DAM OD 01/11/2012 will be using West to North (W_TO_N) generic constraint limit of 2277 MW for hours 1-4, 24 and 1914 MW for hours 5-23. | OCN | Active | |
| Jan 09 2012 14:24:06 CST | ERCOT has completed a price analysis on SCED OD 1-7-2012 and identified a need for price correction. Several settlement points at 01:15 need to be corrected due to MMS system issues. Complete price correction data will be posted on Market Information System by 4pm on 01-09-2012. | Advisory | Active | |
| Jan 09 2012 08:44:54 CST | No sudden loss of generation greater than 450 MW occurred on 01/08/12. | Operational Information | Active | |
| Jan 09 2012 08:38:55 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 09 2012 05:21:04 CST | DAM OD 01/10/2012 will be using West to North (W_TO_N) generic constraint limit of 2271 MW for hours 1-6 and 1908 MW for hours 7-24. | OCN | Active | |
| Jan 08 2012 22:50:54 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 08 2012 07:02:54 CST | No sudden loss of generation greater than 450 MW occurred on 01/07/12. | Operational Information | Active | |
| Jan 08 2012 05:28:40 CST | DAM OD 01/09/2012 will be using West to North (W_TO_N) generic constraint limit of 2271 MW for hours 1-6 and 1908 MW for hours 7-24. | OCN | Active | |
| Jan 07 2012 13:07:38 CST | Test Message on Notice Builder/Twitter: This is a test of the ERCOT notification service. | Operational Information | Active | |
| Jan 07 2012 07:07:49 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 07 2012 06:38:55 CST | No sudden loss of generation greater than 450 MW occurred on 01/06/12. | Operational Information | Active | |
| Jan 07 2012 05:31:24 CST | DAM OD 01/08/2012 will be using West to North (W_TO_N) generic constraint limit of 2115 MW for hours 1-18, 1908 MW for hours 19-22, and 2271 MW for hours 23-24. | OCN | Active | |
| Jan 06 2012 21:50:59 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 06 2012 17:37:44 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 06 2012 12:22:24 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 06 2012 10:53:08 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 06 2012 07:14:32 CST | No sudden loss of generation greater than 450 MW occurred on 01/05/12. | Operational Information | Active | |
| Jan 06 2012 05:34:26 CST | DAM OD 01/07/2012 will be using West to North (W_TO_N) generic constraint limit of 2274 MW for hours 1-10, 13-18, 23, 24 and 1912 MW for hours 11-12, 19-22. | OCN | Active | |
| Jan 05 2012 21:40:30 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 05 2012 08:01:37 CST | ERCOT has cancelled the following notice: ERCOT issued an Advisory due to Physical Responsive Capability falling below 3000mws. | Advisory | Cancelled | |
| Jan 05 2012 07:29:00 CST | ERCOT issued an Advisory due to Physical Responsive Capability falling below 3000mws. | Advisory | Active | |
| Jan 05 2012 07:27:05 CST | No sudden loss of generation greater than 450 MW occurred on 01/04/12. | Operational Information | Active | |
| Jan 05 2012 04:57:47 CST | DAM OD 01/06/2012 will be using West to North (W_TO_N) generic constraint limit of 2118 MW for hours 1-5, 1550 MW for hours 6-14, 18-20, 2118 mw 15-17, 1911 mw 21-22, 2274 mw 23-24 | Operational Information | Active | |
| Jan 04 2012 16:49:40 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 04 2012 08:06:32 CST | No sudden loss of generation greater than 450 MW occurred on 01/03/12. | Operational Information | Active | |
| Jan 04 2012 07:06:48 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 04 2012 05:46:17 CST | DAM OD 01/05/2012 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-5, 24, and 1557 MW for hours 6-23. | OCN | Active | |
| Jan 04 2012 00:46:55 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 03 2012 08:21:54 CST | Eagle Pass DC-tie is unavailable from 12/14/2011 until 03/10/2012 23:00 due to forced outage. | Operational Information | Active | |
| Jan 03 2012 07:32:43 CST | No sudden loss of generation greater than 450 MW occurred on 01/02/12. | Operational Information | Active | |
| Jan 03 2012 05:28:34 CST | DAM OD 01/04/2012 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-4, and 1557 MW for hours 5-24. | OCN | Active | |
| Jan 03 2012 01:59:53 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Jan 02 2012 07:40:51 CST | No sudden loss of generation greater than 450 MW occurred on 01/01/12. | Operational Information | Active | |
| Jan 02 2012 05:35:50 CST | DAM OD 01/03/2012 will be using West to North (W_TO_N) generic constraint limit of 1557 MW for hours 1-24. | OCN | Active | |
| Jan 01 2012 06:50:57 CST | No sudden loss of generation greater than 450 MW occurred on 12/31/11. | Operational Information | Active | |
| Jan 01 2012 05:11:29 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Jan 01 2012 04:56:26 CST | DAM OD 01/02/2012 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-3, 14-17 and 1557 MW for hours 4-13, 18-24. | OCN | Active | |