NOTICE DATE: September 3, 2008

NOTICE TYPE: W-A090308-01 Settlements

SHORT DESCRIPTION: Final settlements for July 11 through July 18, 2008 will run early.

INTENDED AUDIENCE: QSE Settlement Personnel

DAY AFFECTED: Operating Days July 11 through July 18, 2008

LONG DESCRIPTION: On the weekend of September 13 and 14, 2008, ERCOT will conduct a technical migration of the Settlements and Billing application and database. To reduce risk to the market, ERCOT will run Final Settlements for Operating Dates July 11 through July 18, 2008 in advance of the migration.

There will be no impact to invoices, payments or dispute deadlines. Market Participants will receive Final Settlement Statements and associated extracts for the affected Operating Dates early. The impacted extracts are Load, Generation and Settlements and Billing. ERCOT will update the Settlements Calendar on ERCOT.com accordingly.

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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