NOTICE DATE:  March 21, 2008

NOTICE TYPE:  M-A031708-06   UPDATE Extracts – Wholesale/Retail

CLASSIFICATION:  Public

SHORT DESCRIPTION: Invoices have been posted

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED: March 15, 2008 to Current

LONG DESCRIPTION:  The Statements expected to post today will be delayed.  The following reports/extracts are currently posting two days later than expected:

Settlement Input Data (SID)

Market Shadow Prices (SHP)

867_03 Activity Report

Forecasted Transmission 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

ADDITIONAL INFORMATION:  All extracts/reports listed above have been posted for March 15-18 2008.

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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