NOTICE DATE: December 3, 2012 NOTICE TYPE: M-A120312-01 Outage - Retail/Wholesale SHORT DESCRIPTION: Unplanned outage of ERCOT systems INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: December 3, 2012, 01:08 CPT - current LONG DESCRIPTION: ERCOT experienced an unplanned outage due to a hardware failure, which impacted multiple databases and applications beginning at 01:08 CPT on December 3, 2012. Most systems have been switched to the alternate data center. Retail market systems and MarkeTrak are not functional at this time. 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<http://lists.ercot.com/>. dh