NOTICE DATE: April 23, 2008

NOTICE TYPE: W-A042308-01 Extracts

CLASSIFICATION: Public

SHORT DESCRIPTION: Market Information Extracts were impacted as a result of an ERCOT database failover.

INTENDED AUDIENCE: QSEs

DAY AFFECTED: April 21, 2008 and April 22, 2008

LONG DESCRIPTION: Due to a database emergency failover on April 21, 2008 some Extracts were posted with missing data.

The following Extracts were impacted:

Forecast_Data_Daily

Market_Information_Daily

Ancillary_Services_Daily

Bids_and_Schedules_Daily

ASDEPLOYMENTS

Self_Sch_Energy_Services

Actual_Resource_Output

Dynamic_Load

ERCOT is working on resolving this issue. Additional information will be provided when 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].

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