NOTICE DATE: August 16, 2009

NOTICE TYPE:  R-A081609-01  Outage – Retail Processing

SHORT DESCRIPTION: NAESB became unresponsive at approximately 4:25 AM on Sunday, August 16, 2009. ERCOT was unable to receive or send transactions from approximately 4:25 AM until 7:58 AM on Sunday, August 16, 2009.

 INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: Sunday, August 16  4:25 AM to 7:58 AM

LONG DESCRIPTION: NAESB became unresponsive at approximately 4:25 AM on Sunday, August 16, 2009. ERCOT was unable to receive or send transactions from approximately 4:25 AM until 7:58 AM on Sunday, August 16, 2009.

The NAESB, EDI, EAI, Customer Registration, and MarkeTrak databases had to be stopped to do a restart. Root cause will continue to be investigated on Monday, August 17, 2009.

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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JR