NOTICE DATE:  May 1, 2008

NOTICE TYPE:  M-A050108-01 OUTAGE – Retail\Wholesale

CLASSIFICATION:  Public

SHORT DESCRIPTION:  Unplanned outage of the Texas Market Link (TML) Market Participant Identity Management (MPIM) component

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED: May 1, 2008 from 8:46 AM to 9:24 AM

LONG DESCRIPTION: ERCOT’s TML MPIM component experienced an unplanned outage today, May 1, 2008 from 8:46 AM to 9:24 AM.

ERCOT has determined that the root cause of this outage was a SAN issue.

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].

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

DP/JA