NOTICE DATE: March 17, 2008

NOTICE TYPE: M-A031708-01 Extracts – Wholesale/Retail

SHORT DESCRIPTION: ERCOT experienced delays with posting several data extracts.

INTENDED AUDIENCE: All Market Participants

DAY AFFECTED: March 15 through March 17, 2008

LONG DESCRIPTION: Due to an internal system issue, ERCOT has experienced delays with the following extracts:

Settlement Input Data (SID)

Market Shadow Prices (SHP)

Forecast Trans Loss Factor

Actual Transmission Loss Factor

TDSP Distribution Loss Factors – Forecasted

TDSP Distribution Loss Factors – Actual

Unaccounted For Energy

Load Estimation Counts

Load Estimation Volume

ESI ID Consumption Data Loading – IDR Protocol Compliance - Daily

These extracts are now posting one day later than usual. There is no gap in the data and no other extracts are affected at this time.

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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