NOTICE DATE: January 31, 2012

NOTICE TYPE: M-D013112-01 Outage Retail/Wholesale

SHORT DESCRIPTION: Market Participant Identity Management (MPIM) outage

INTENDED AUDIENCE: All ERCOT Market Participants

DAY AFFECTED: January 31, 2012 from 14:21 to 15:51 CPT

LONG DESCRIPTION: The ERCOT Market Participant Identity Management (MPIM) system suffered an outage today, January 31, 2012 from 14:21 to 15:51 CPT. This was due to failed server connectivity, which has been restored. The root cause is being investigated. All MPIM functions have been restored.

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 email at [log in to unmask].

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