NOTICE DATE:  May 4, 2010

NOTICE TYPE:  W-A050310-02 Outage - Wholesale

SHORT DESCRIPTION:  Final - Unscheduled outage of NMMS

INTENDED AUDIENCE:  TDSPs/TSPs

DAY AFFECTED:  May 3, 2010

LONG DESCRIPTION:  The Network Model Management System (NMMS) is currently available for use. The NMMS application database was experiencing performance issues which caused it to become unresponsive. ERCOT has mitigated the issue and will continue to work on improved performance.

CONTACT:  If you have any questions, please forward them to [log in to unmask] or 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 email at [log in to unmask].

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