NOTICE DATE:  May 5, 2008

NOTICE TYPE:  W-A040308-02   UPDATE Operations

CLASSIFICATION: Public

SHORT DESCRIPTION:  “Total On-Line Capacity” calculation on the ERCOT Portal has been corrected.

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  May 1, 2008

LONG DESCRIPTION:  ERCOT has corrected the Total On-Line Capacity on the ERCOT Portal (http://mospublic.ercot.com/ercot/jsp/frequency_control.jsp).  The value was revised to exclude self-serve generation.

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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