NOTICE DATE: September 21, 2010 NOTICE TYPE: M-092110-01 Outage - Retail - API INTENDED AUDIENCE: All Market Participants DAY AFFECTED: September 19, 2010 20:00 - September 21, 2010 16:08 DESCRIPTION: ERCOT's API was unavailable from September 19, 2010 20:00 - September 21, 2010 16:08. Texas Market Link was functioning normally during this time. ERCOT will provide additional information as it becomes available. 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 e-mail at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving e-mail 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/DP/DG