NOTICE DATE:  June 17, 2012

NOTICE TYPE:  M-A061712-01 COMPLETION:  Maintenance Outage – Retail/Wholesale

SHORT DESCRIPTION:  ERCOT completed the scheduled a maintenance outage for Sunday, June 17, 2012 at 18:00

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, June 17, 2012 from 06:00 through 21:00

LONG DESCRIPTION:  ERCOT completed the scheduled a maintenance outage for Sunday, June 17, 2012 at 18:00

ERCOT completed the scheduled a maintenance outage for Sunday, June 17, 2012 at 18:00. All systems and transaction processing were reinstated at that time. As always, connectivity issues such as NAESB or MIS can be reported to the ERCOT Help Desk at 512-248-6800 or [log in to unmask] or tomorrow to your ERCOT Account Manager.

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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