NOTICE DATE: February 16, 2011 NOTICE TYPE: W-A021611-01 Release - Wholesale SHORT DESCRIPTION: Implementation of defect repairs INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: February 23 - March 31, 2011 LONG DESCRIPTION: ERCOT will be migrating corrections to a number of market-facing defects. These patches will be implemented in the production environment between February 23 and March 31, 2011. Please see the attached spreadsheet for the description and estimate of the release date for each defect. Note that many resolved defects are related to Daylight Savings issues that have been corrected. 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. dh