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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| May 2012 | Apr 2012 | Mar 2012 | Feb 2012 | Jan 2012 | Dec 2011 |
| Date | Message | Type | Status | |
|---|---|---|---|---|
| Dec 31 2011 20:23:43 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 31 2011 11:41:51 CST | The BNBSW SPS #41 has been forced out of service. | Operational Information | Active | |
| Dec 31 2011 06:50:14 CST | On 12/30/11, a sudden loss of generation occurred at 15:57 totaling 629 MW, Frequency declined to 59.794, ERCOT load was 29, 700 MW. | Operational Information | Active | |
| Dec 31 2011 05:31:20 CST | DAM OD 01/01/2012 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-17, 24 and 1557 MW for hours 18-23. | OCN | Active | |
| Dec 31 2011 05:23:28 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 31 2011 01:20:55 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 30 2011 07:32:45 CST | No sudden loss of generation greater than 450 MW occurred on 12/29/11. | Operational Information | Active | |
| Dec 30 2011 07:29:29 CST | ERCOT has cancelled the following notice: The Barney Davis SPS has returned to service. | Operational Information | Cancelled | |
| Dec 30 2011 07:27:33 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 30 2011 05:01:32 CST | DAM OD 12/31/2011 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-9, 11-18, 21-24 and 1557 MW for hours 10, 19-20 | OCN | Active | |
| Dec 30 2011 03:53:00 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 29 2011 23:37:59 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 29 2011 19:02:08 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 29 2011 14:33:27 CST | ERCOT has cancelled the following notice: ERCOT taking manual action for Stryker Creek 345kv CB 3255 outage. | Operational Information | Cancelled | |
| Dec 29 2011 14:18:42 CST | ERCOT taking manual action for Stryker Creek 345kv CB 3255 outage. | Operational Information | Active | |
| Dec 29 2011 06:52:22 CST | On 12/28/11, a sudden loss of generation occurred at 09:49 totaling 719 MW. Frequency declined to 59.796 HZ, ERCOT load was 37, 472 MW. | Operational Information | Active | |
| Dec 29 2011 05:47:12 CST | DAM OD 12/30/2011 will be using West to North (W_TO_N) generic constraint limit of 2127 MW for hours 1-5, 14-17, 23, 24 and 1557 MW for hours 6-13, 18-22. | OCN | Active | |
| Dec 28 2011 11:57:49 CST | ERCOT has cancelled the following notice: The Austrop #1 SPS has been taken out of service. | Operational Information | Cancelled | |
| Dec 28 2011 08:21:36 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 28 2011 08:17:15 CST | No sudden loss of generation greater than 450 MW occurred on 12/27/11. | Operational Information | Active | |
| Dec 28 2011 07:48:36 CST | The Austrop #1 SPS has been taken out of service. | Operational Information | Active | |
| Dec 28 2011 05:49:52 CST | DAM OD 12/29/2011 will be using West to North (W_TO_N) generic constraint limit of 2121 MW for hours 1-4, 16, 24 and 1552 MW for hours 5-15, 17-23. | OCN | Active | |
| Dec 27 2011 22:29:59 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 27 2011 07:26:19 CST | On 12/26/11, a sudden loss of generation occurred at 03:46 totaling 546 MW. Frequency declined to 59.834 HZ, ERCOT load was 29, 654 MW. | Operational Information | Active | |
| Dec 27 2011 05:33:22 CST | DAM OD 12/28/2011 will be using West to North (W_TO_N) generic constraint limit of 1558 MW for hours 1, 5-24 and 2129 MW for hours 2-4. | OCN | Active | |
| Dec 26 2011 06:28:49 CST | No sudden loss of generation greater than 450 MW occurred on 12/25/11. | Operational Information | Active | |
| Dec 26 2011 05:29:09 CST | DAM OD 12/27/2011 will be using West to North (W_TO_N) generic constraint limit of 1558 MW for hours 1, 2, 4-24 and 2129 MW for hour 3. | OCN | Active | |
| Dec 25 2011 16:16:29 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 25 2011 09:11:50 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Active | |
| Dec 25 2011 08:15:11 CST | No sudden loss of generation greater than 450 MW occurred on 12/24/11. | Operational Information | Active | |
| Dec 25 2011 05:29:12 CST | DAM OD 12/26/2011 will be using West to North (W_TO_N) generic constraint limit of 1558 MW for hours 1-13, 18-24 and 2129 MW for hours 14-17. | OCN | Active | |
| Dec 24 2011 21:08:15 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 24 2011 18:06:27 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Active | |
| Dec 24 2011 12:03:04 CST | The Barney Davis SPS has returned to service. | Operational Information | Active | |
| Dec 24 2011 06:55:28 CST | No sudden loss of generation greater than 450 MW occurred on 12/23/11. | Operational Information | Active | |
| Dec 24 2011 05:30:25 CST | DAM OD 12/25/2011 will be using West to North (W_TO_N) generic constraint limit of 1558 MW for all hours (HE 1-24). | OCN | Active | |
| Dec 23 2011 23:44:16 CST | ERCOT has cancelled the following notice: AEN Austrop Autotransformer SPS has been placed back in service. | Operational Information | Cancelled | |
| Dec 23 2011 05:36:56 CST | On 12/22/11, a sudden loss of generation occurred at 05:13 totaling 760 MW. Frequency declined to 59.799 HZ, ERCOT load was 30, 709 MW. | Operational Information | Active | |
| Dec 23 2011 05:22:58 CST | DAM OD 12/24/2011 will be using West to North (W_TO_N) generic constraint limit of 1558 MW for all hours (HE 1-24). | OCN | Active | |
| Dec 22 2011 11:14:41 CST | AEN Austrop Autotransformer SPS has been placed back in service. | Operational Information | Active | |
| Dec 22 2011 10:13:43 CST | Eagle Pass DC Tie (South DC Tie) will be unavailable until 03/11/2012 | Operational Information | Active | |
| Dec 22 2011 10:03:22 CST | ERCOT has cancelled the following notice: The LCRA Austrop SPS on 345 kv line T-229 has been put back into service. | Operational Information | Cancelled | |
| Dec 22 2011 07:42:46 CST | No sudden loss of generation greater than 450 MW occurred on 12/21/11. | Operational Information | Active | |
| Dec 22 2011 05:21:43 CST | DAM OD 12/23/2011 will be using West to North (W_TO_N) generic constraint limit of 2129 MW for hours 1-5 and 1558 MW for hours 6-24. | OCN | Active | |
| Dec 21 2011 09:23:36 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 21 2011 08:00:22 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 21 2011 07:15:15 CST | No sudden loss of generation greater than 450 MW occurred on 12/20/11. | Operational Information | Active | |
| Dec 21 2011 05:23:27 CST | DAM OD 12/22/2011 will be using West to North (W_TO_N) generic constraint limit of 2126 MW for hours 1-5, 24 and 1556 MW for hours 6-23. | OCN | Active | |
| Dec 20 2011 19:19:22 CST | ERCOT has cancelled the following notice: The Railroad DC Tie will be available for Import only thru Friday, December 16, 2011 at 1700 due to a Planned Outage. | Operational Information | Cancelled | |
| Dec 20 2011 15:13:27 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 20 2011 07:03:28 CST | No sudden loss of generation greater than 450 MW occurred on 12/19/11. | Operational Information | Active | |
| Dec 20 2011 05:12:32 CST | DAM OD 12/21/2011 will be using West to North (W_TO_N) generic constraint limit of 1556 MW for all hours 1-24. | OCN | Active | |
| Dec 19 2011 20:26:18 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 19 2011 17:47:19 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 19 2011 09:25:18 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 19 2011 08:45:37 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 19 2011 07:53:27 CST | On 12/18/11, a sudden loss of generation occurred at 08:15 totaling 780 MW. Frequency declined to 59.766 HZ, ERCOT load was 31, 000 MW. | Operational Information | Active | |
| Dec 19 2011 07:10:45 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 19 2011 05:41:43 CST | ERCOT has cancelled the following notice: The LCRA Austrop SPS on 345 kv line T-229 has been taken out of service. | Operational Information | Cancelled | |
| Dec 19 2011 05:20:36 CST | DAM OD 12/20/2011 will be using West to North (W_TO_N) generic constraint limit of 1027 MW for all hours 1-24. | OCN | Active | |
| Dec 19 2011 03:17:36 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 18 2011 20:54:59 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 18 2011 06:55:40 CST | No sudden loss of generation greater than 450 MW occurred on 12/17/11. | Operational Information | Active | |
| Dec 18 2011 05:02:12 CST | DAM OD 12/19/2011 will be using West to North (W_TO_N) generic constraint limit of 1027 MW for all hours 1-24. | OCN | Active | |
| Dec 17 2011 06:45:34 CST | No sudden loss of generation greater than 450 MW occurred on 12/16/11. | Operational Information | Active | |
| Dec 17 2011 05:47:44 CST | DAM OD 12/18/2011 will be using West to North (W_TO_N) generic constraint limit of 1027 MW for all hours 1-24. | OCN | Active | |
| Dec 16 2011 15:36:57 CST | ERCOT has cancelled the following notice: North DC Tie will be in Outage Friday 12/16/11 at 05:00 until 17:00 (OKLA) 345kV disconnected 5598_S will open the Oklaunion (OKLA) to North HVDC (DCTM) 345kV circuit DCT_OKL | Operational Information | Cancelled | |
| Dec 16 2011 11:06:34 CST | The LCRA Austrop SPS on 345 kv line T-229 has been put back into service. | Operational Information | Active | |
| Dec 16 2011 10:16:46 CST | DC Tie Outage: The DC_S (Eagle Pass) DC Tie will be unavailable from 12/16/2011 through 03/10/2012 due to a planned outage. | Operational Information | Active | |
| Dec 16 2011 06:53:11 CST | On 12/15/11, a sudden loss of generation occurred at 13:16 totaling 607 MW. Frequency declined to 59.791 HZ, ERCOT load was 34, 541 MW. | Operational Information | Active | |
| Dec 16 2011 04:51:41 CST | DAM OD 12/17/2011 will be using West to North (W_TO_N) generic constraint limit of 1027 MW for all hours 1-24. | Operational Information | Active | |
| Dec 15 2011 07:04:36 CST | On 12/14/11, a sudden loss of generation occurred at 14:58 totaling 560 MW. Frequency declined to 59.827 HZ, ERCOT load was 33, 657 MW. | Operational Information | Active | |
| Dec 15 2011 05:46:05 CST | DAM OD 12/16/2011 will be using West to North (W_TO_N) generic constraint limit of 2280 MW for hours 1-5, 1916 MW for hours 6-8, 20-24 and 1901 MW for 9-19. | OCN | Active | |
| Dec 14 2011 23:43:59 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 14 2011 19:45:32 CST | North DC Tie will be in Outage Friday 12/16/11 at 05:00 until 17:00 (OKLA) 345kV disconnected 5598_S will open the Oklaunion (OKLA) to North HVDC (DCTM) 345kV circuit DCT_OKL | Operational Information | Active | |
| Dec 14 2011 17:39:38 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Active | |
| Dec 14 2011 09:53:00 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 14 2011 06:22:28 CST | No sudden loss of generation greater than 450 MW occurred on 12/13/11. | Operational Information | Active | |
| Dec 14 2011 05:36:32 CST | DAM OD 12/15/2011 will be using Valley Import(VALIMP) generic constraint limit of 400 MW for all hours (HE 1-24). | OCN | Active | |
| Dec 14 2011 05:24:23 CST | DAM OD 12/15/2011 will be using West to North (W_TO_N) generic constraint limit of 2280 MW for hours 1-6, 24 and 1917 MW for hours 7-23. | OCN | Active | |
| Dec 13 2011 11:52:20 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Active | |
| Dec 13 2011 07:18:08 CST | No sudden loss of generation greater than 450 MW occurred on 12/12/11. | Operational Information | Active | |
| Dec 13 2011 05:01:51 CST | DAM OD 12/14/2011 will be using West to North (W_TO_N) generic constraint limit of 2282 MW for hours 1-6, 24 and 1918 MW for hours 7-23. | OCN | Active | |
| Dec 12 2011 11:48:59 CST | The Railroad DC Tie will be available for Import only thru Friday, December 16, 2011 at 1700 due to a Planned Outage. | Operational Information | Active | |
| Dec 12 2011 10:05:15 CST | The LCRA Austrop SPS on 345 kv line T-229 has been taken out of service. | Operational Information | Active | |
| Dec 12 2011 08:57:33 CST | The Railroad DC Tie will be unavailable for Export thru Friday, December 16, 2011 at 1700 due to an Outage. | Operational Information | Active | |
| Dec 12 2011 08:51:47 CST | The AEN Austrop Autotransformer SPS has been taken out of service. | Operational Information | Active | |
| Dec 12 2011 07:48:04 CST | No sudden loss of generation greater than 450 MW occurred on 12/11/11. | Operational Information | Active | |
| Dec 12 2011 06:02:39 CST | The Railroad DC Tie will be unavailable for Export thru Friday, December 15, 2011 at 1700 due to an Outage. | Operational Information | Active | |
| Dec 12 2011 05:15:59 CST | DAM OD 12/13/2011 will be using West to North (W_TO_N) generic constraint limit of 2287 MW for hours 1-5, 11-15, 24 and 1922 MW for hours 6-10, 16-23. | OCN | Active | |
| Dec 11 2011 14:55:38 CST | AS Responsibility Check for OD 12122011 was inadvertently triggered at 1446. Please disregard any messages for AS Responsibility at this time. The event will be re-run at 1544. | OCN | Active | |
| Dec 11 2011 12:41:34 CST | ERCOT has delayed the deadline for the posting of the DAM solutions for OD Dec 12, 2011 due to long solution time. ERCOT will post notification when DAM is complete. | Advisory | Active | |
| Dec 11 2011 05:52:55 CST | No sudden loss of generation greater than 450 MW occurred on 12/10/11. | Operational Information | Active | |
| Dec 11 2011 05:22:45 CST | DAM OD 12/12/2011 will be using West to North (W_TO_N) generic constraint limit of 2287 MW for hours 1-3, 24 and 1922 MW for hours 4-23. | OCN | Active | |
| Dec 10 2011 20:14:16 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 10 2011 20:14:12 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 10 2011 17:49:46 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 10 2011 07:31:22 CST | No sudden loss of generation greater than 450 MW occurred on 12/08/11. | Operational Information | Active | |
| Dec 10 2011 07:28:09 CST | No sudden loss of generation greater than 450 MW occurred on 12/09/11. | Operational Information | Active | |
| Dec 10 2011 05:26:35 CST | DAM OD 12/11/2011 will be using West to North (W_TO_N) generic constraint limit of 1922 MW for hours 1-14, 17-24 and 2287 MW for hours 15, 16. | OCN | Active | |
| Dec 09 2011 12:21:37 CST | ERCOT has cancelled the following notice: ERCOT is taking manual action for RYSSW bus outage. | Operational Information | Cancelled | |
| Dec 09 2011 06:20:14 CST | ERCOT is taking manual action for RYSSW bus outage. | Operational Information | Cancelled | |
| Dec 09 2011 05:25:06 CST | DAM OD 12/10/2011 will be using West to North (W_TO_N) generic constraint limit of 1918 MW for hours 1-13, 18-24 and 2281 MW for hours 14-17. | OCN | Active | |
| Dec 09 2011 03:52:36 CST | ERCOT has cancelled the following notice: ERCOT is working from the Primary Control Center. | Operational Information | Cancelled | |
| Dec 08 2011 19:20:27 CST | ERCOT has cancelled the following notice: The Eagle Pass DC Tie is unavailable until further notice due to a Forced Outage. | Operational Information | Cancelled | |
| Dec 08 2011 09:09:19 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 08 2011 07:58:46 CST | The North HVDC DC Tie will be unavailable from 12/16/2011 05:00 through 12/16/2011 17:00 due to a planned outage. | Operational Information | Active | |
| Dec 08 2011 07:09:51 CST | On 12/07/11, a sudden loss of generation occurred at 20:31 totaling 473 MW. Frequency declined to 59.903 HZ, ERCOT load was 44, 269 MW. | Operational Information | Active | |
| Dec 08 2011 05:23:16 CST | DAM OD 12/9/2011 will be using West to North (W_TO_N) generic constraint limit of 1925 MW for all hours. | OCN | Active | |
| Dec 07 2011 23:50:26 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 07 2011 14:36:51 CST | ERCOT has cancelled the following notice: ERCOT is taking manual actions due to a stability limit. This limit is caused by a planned outage on the MNSES to Farmersville #1 345 KV line. | Operational Information | Cancelled | |
| Dec 07 2011 12:07:14 CST | ERCOT has cancelled the following notice: The AEN AUSTRO Transformers SPS and the LCRA AUSTRO AT2 SPS has been taken out of service. | Operational Information | Cancelled | |
| Dec 07 2011 09:09:00 CST | The AEN AUSTRO Transformers SPS and the LCRA AUSTRO AT2 SPS has been taken out of service. | Operational Information | Cancelled | |
| Dec 07 2011 07:03:37 CST | No sudden loss of generation greater than 450 MW occurred on 12/06/11. | Operational Information | Active | |
| Dec 07 2011 06:06:51 CST | ERCOT is taking manual actions due to a stability limit. This limit is caused by a planned outage on the MNSES to Farmersville #1 345 KV line. | Operational Information | Cancelled | |
| Dec 07 2011 05:44:30 CST | DAM OD 12/8/2011 will be using West to North (W_TO_N) generic constraint limit of 1619 MW for hours 1-20 and 1925 MW for hours 21-24. | OCN | Active | |
| Dec 06 2011 18:36:56 CST | ERCOT has cancelled the following notice: ERCOT is working from alternate control center. | Operational Information | Cancelled | |
| Dec 06 2011 18:10:29 CST | ERCOT has cancelled the following notice: ERCOT is working from alternate control center. | Operational Information | Cancelled | |
| Dec 06 2011 17:06:12 CST | ERCOT is working from the Primary Control Center. | Operational Information | Cancelled | |
| Dec 06 2011 07:18:07 CST | No sudden loss of generation greater than 450 MW occurred on 12/05/11. | Operational Information | Active | |
| Dec 06 2011 05:31:54 CST | DAM OD 12/7/2011 will be using West to North (W_TO_N) generic constraint limit of 1625 MW for all hours. | OCN | Active | |
| Dec 06 2011 05:22:39 CST | ERCOT is working from alternate control center. | Operational Information | Cancelled | |
| Dec 05 2011 18:17:18 CST | No sudden loss of generation greater than 450 MW occurred on 12/04/11. | Operational Information | Active | |
| Dec 05 2011 14:59:06 CST | ERCOT has completed a price analysis on DAM OD 12-06-2011 and identified a need for price correction. Operating intervals involved are operating hour 1 to 24. Totally 1 Settlement Point (DC_S) was involved. Complete price correction data will be posted on Market Information System as soon as possible but no later than 10:00 am on 12-07-2011. | Advisory | Active | |
| Dec 05 2011 12:51:11 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 05 2011 12:36:51 CST | ERCOT has cancelled the following notice: This is a test of the ERCOT notification service. | Operational Information | Cancelled | |
| Dec 05 2011 12:34:55 CST | ERCOT has cancelled the following notice: This is a test of the ERCOT notification service. | Operational Information | Cancelled | |
| Dec 05 2011 12:32:38 CST | ERCOT has cancelled the following notice: ERCOT IS CONDUCTING A WINTER STORM DRILL. ALL OF THE FOLLOWING INSTRUCTIONS ARE FOR SIMULATION AND TEST PURPOSES ONLY. NO REAL-TIME ACTION IS TO BE TAKEN. All communication testing for the Winter Storm Drill will begin at 07:30 Remember calls directed to ERCOT should be to the numbers provided on the Designated Drill Phone Numbers for Contracting ERCOT sheet. If you have any question, call 512-248-3802 | Operational Information | Cancelled | |
| Dec 05 2011 05:59:07 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 05 2011 05:09:45 CST | DAM OD 12/6/2011 will be using West to North (W_TO_N) generic constraint limit of 1944 MW for hours 1-6, and 1635 MW for hours 7-24. | OCN | Active | |
| Dec 05 2011 01:20:04 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 04 2011 21:33:18 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 04 2011 06:41:10 CST | No sudden loss of generation greater than 450 MW occurred on 12/03/11. | Operational Information | Active | |
| Dec 04 2011 04:56:02 CST | DAM OD 12/5/2011 will be using West to North (W_TO_N) generic constraint limit of 2312 MW for hours 1-6, and 1944 MW for hours 7-24. | OCN | Active | |
| Dec 04 2011 02:40:33 CST | ERCOT has cancelled the following notice: At 0909, ERCOT issued an OCN for Projected Reserve Capacity shortage for HE 1100 to HE 1300. | OCN | Cancelled | |
| Dec 03 2011 14:05:09 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 03 2011 12:02:53 CST | ERCOT has cancelled the following notice: This is a test of the ERCOT notification service. | Operational Information | Cancelled | |
| Dec 03 2011 11:37:28 CST | Test Message on Notice Builder/Twitter: This is a test of the ERCOT notification service. | Operational Information | Cancelled | |
| Dec 03 2011 09:25:07 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 03 2011 09:15:47 CST | At 0909, ERCOT issued an OCN for Projected Reserve Capacity shortage for HE 1100 to HE 1300. | OCN | Cancelled | |
| Dec 03 2011 07:12:01 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 03 2011 06:54:23 CST | No sudden loss of generation greater than 450 MW occurred on 12/02/11. | Operational Information | Active | |
| Dec 03 2011 05:01:50 CST | DAM OD 12/4/2011 will be using West to North (W_TO_N) generic constraint limit of 2312 MW for hours 1-10, 15-17, 23-24 and 1944 MW for hours 11-14, 18-22. | OCN | Active | |
| Dec 03 2011 03:47:43 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 02 2011 21:38:55 CST | ERCOT has cancelled the following notice: ERCOT is deploying Non-Spin Reserve for Dodegal5 constraint. | Operational Information | Cancelled | |
| Dec 02 2011 20:37:57 CST | ERCOT has cancelled the following notice: ERCOT is issuing an OCN for Projected Reserve Capacity shortage for HE18 thru HE20. | OCN | Cancelled | |
| Dec 02 2011 20:35:53 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 02 2011 15:11:01 CST | ERCOT is issuing an OCN for Projected Reserve Capacity shortage for HE18 thru HE20. | OCN | Cancelled | |
| Dec 02 2011 14:12:39 CST | ERCOT has cancelled the following notice: ERCOT is issuing a Watch due to Physical Responsive Capability being below 2500 MW. | Watch | Cancelled | |
| Dec 02 2011 13:25:15 CST | ERCOT has cancelled the following notice: ERCOT is issuing a Watch due to Physical Responsive Capability being below 2500 MW. | Watch | Cancelled | |
| Dec 02 2011 13:05:05 CST | ERCOT has cancelled the following notice: ERCOT is deploying 1/2 of Non Spin Reserve | Operational Information | Cancelled | |
| Dec 02 2011 13:04:07 CST | ERCOT is deploying Non-Spin Reserve for Dodegal5 constraint. | Operational Information | Cancelled | |
| Dec 02 2011 10:05:40 CST | ERCOT is deploying 1/2 of Non Spin Reserve | Operational Information | Cancelled | |
| Dec 02 2011 09:44:15 CST | Physical Responsive Capability < 2500 MW: ERCOT is issuing a Watch due to Physical Responsive Capability being below 2500 MW. | Watch | Cancelled | |
| Dec 02 2011 09:44:15 CST | Physical Responsive Capability < 2500 MW: ERCOT is issuing a Watch due to Physical Responsive Capability being below 2500 MW. | Watch | Cancelled | |
| Dec 02 2011 09:15:38 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 02 2011 07:54:32 CST | No sudden loss of generation greater than 450 MW occurred on 12/01/11. | Operational Information | Active | |
| Dec 02 2011 05:01:53 CST | DAM OD 12/3/2011 will be using West to North (W_TO_N) generic constraint limit of 2322 MW for hours 1-17, 23, 24 and 1952 MW for hours 18-22. | OCN | Active | |
| Dec 02 2011 04:31:49 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 02 2011 01:41:19 CST | The Eagle Pass DC Tie is unavailable until further notice due to a Forced Outage. | Operational Information | Cancelled | |
| Dec 01 2011 18:23:13 CST | West-North Stability Limit: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 01 2011 14:37:54 CST | ERCOT has cancelled the following notice: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 01 2011 11:36:26 CST | Physical Responsive Capability < 3000 MW: ERCOT is issuing an Advisory due to Physical Responsive Capability being below 3000 MW | Advisory | Cancelled | |
| Dec 01 2011 08:44:26 CST | ERCOT has cancelled the following notice: ERCOT is constraining for the West-North stability limit. | Operational Information | Cancelled | |
| Dec 01 2011 07:12:04 CST | No sudden loss of generation greater than 450 MW occurred on 11/30/11. | Operational Information | Active | |