NOTICE DATE:  April 28, 2008

NOTICE TYPE:  M-A042808-01 – Other - Degradation

CLASSIFICATION: Public

SHORT DESCRIPTION:  ERCOT experienced performance degradation on the Report Explorer Application Programming Interface (API).

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  April 28, 2008 from 4:55 AM to 6:44 AM

LONG DESCRIPTION:  Monday, April 28, 2008 from 4:55 AM to 6:44 AM ERCOT’s Report Explorer Application Programming Interface (API) experienced a performance degradation impacting Market Participants utilizing API.

ERCOT is researching the issue and will provide additional information as it becomes 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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DP/TR