NOTICE DATE: May 6, 2010

NOTICE TYPE: R-A050610-01 TML Outage - Retail

INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: May 6, 2010 from 16:28 to 17:04

DESCRIPTION: ERCOT’s Texas Market Link (TML) Find ESI ID and Find Transactions experienced an unplanned outage on May 6, 2010 from 16:28 to 17:04.

The TML’s Find ESI ID and Find Transactions is now operational.

Root cause was determined to be an Enterprise Application Integration (EAI) process failure.

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].

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