NOTICE DATE: September 14, 2009

NOTICE TYPE: M-A091409-01 Outage – Mospublic.ercot.com

SHORT DESCRIPTION: Mospublic.ercot.com outage September 14, 2009

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: September 14, 2009, from 2:25 AM until 3:40 AM

LONG DESCRIPTION: Mospublic.ercot.com experienced intermittent outages on September 14, 2009, from 2:25 AM until 3:40 AM. The root cause has not yet been determined.

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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