NOTICE DATE: January 27, 2011 NOTICE TYPE: W-A012711-01 Extracts - Wholesale SHORT DESCRIPTION: Missed Postings for a subset of State Estimator Reports INTENDED AUDIENCE: All Market Participants DAY AFFECTED: January 27, 2011 LONG DESCRIPTION: A subset of State Estimator reports from Current Day Reports (CDR) system failed to publish to the Market Information System (MIS) for several intervals today. The State Estimator Load Report data was not transferred correctly between systems following a data base load. ERCOT is researching how it can ensure that the data transfer occurs correctly in the future to mitigate any similar reoccurrences. The chart below lists the reports and intervals impacted. None of the impacted reports have retry capability therefore the missed reports will not be reposted to the MIS. Hourly Reports EMIL ID Report ID Intervals Missed Hourly State Estimator Transmission Line Flows NP6-619-CD 12308 27/01/2011 00:00 - 27/01/2011 01:00 5 Minute Reports EMIL ID Report ID Intervals Missed State Estimator Load Report - Individual Load on Electrical Buses NP6-621-CD 12355 27/01/2011 00:55 - 27/01/2011 10:45 State Estimator Load Report - Load by Electrical Bus by Load Zone NP6-623-CD 12356 27/01/2011 00:55 - 27/01/2011 10:45 State Estimator Load Report - Total ERCOT Generation NP6-625-CD 12358 27/01/2011 00:00 - 27/01/2011 00:20 State Estimator Load Report - Total System Load on Electrical Buses NP6-624-CD 12357 27/01/2011 00:55 - 27/01/2011 10:45 CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.