NOTICE DATE: May 20, 2010 NOTICE TYPE: M-A052010-01 Settlements SHORT DESCRIPTION: Reposting of Settlements and Billing Extracts for May 17, 2010 INTENDED AUDIENCE: QSE Settlement Personnel DAY AFFECTED: Posting date May 17, 2010 LONG DESCRIPTION: On May 17, 2010, the Settlements and Billing extracts posted on the Texas Market Link (TML) contained incomplete public market data due to a data output issue in the source system. Only the Settlements and Billing extract public data was impacted; all the QSE's private data in settlements and billing extracts was correct. The following ERCOT totals were missing from the extract: RIBILLAMTTOT LIBILLAMTTOT URCBILLAMTTOT CSCBEQSEBILLAMTTOT Settlements and Billing extracts posted on May 17, 2010 have been removed from TML. The corrected Settlements and Billing extracts were published today, Thursday, May 20, 2010. ERCOT has extended the dispute deadline by three business day to allow sufficient time for participants to verify their settlements for the impacted Operating Days. ADDITIONAL INFORMATION: Please see the table below for the new Operating Day dispute deadlines: Operating Day Settlement Statement Type New Dispute Deadline 05/05/10 Initial Settlement June 4, 2010 03/17/10 Final Resettlement June 4, 2010 11/14/09 True-Up Resettlement June 4, 2010 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]<blocked::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<http://lists.ercot.com/>. je