NOTICE DATE: September 16, 2008

NOTICE TYPE: W-A090808-03 Extracts – Wholesale

SHORT DESCRIPTION: The SID and SHP Extract posted for the Initial Settlement of Operating Day September 5, 2008 reposted on September 16, 2008.

INTENDED AUDIENCE: QSE Financial Personnel

DAY AFFECTED: Operating Day September 5, 2008

LONG DESCRIPTION: The Settlement Input Data (SID) and the Market Shadow Prices (SHP) extracts posted on Monday, September 8, 2008 were affected by a processing issue. The SID and SHP extracts that were posted had incomplete data for Operating Day September 5, 2008.

ERCOT has reposted the SID and SHP extracts today with the missing data for Operating Day September 5, 2008 included.

Today’s normal posting of the SID and SHP extracts will occur as expected. Market Participants can expect to see two extracts posted with today’s timestamp. The earlier file posting will account for the rerun / reposted dates and the later file will account for today’s normal daily posting.

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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