NOTICE DATE: March 17, 2011

NOTICE TYPE: M-A031611-02 CRR

SHORT DESCRIPTION: May 2011First Six Months CRR allocation results and Network Model have been posted

INTENDED AUDIENCE: CRR Account Holders

DAY AFFECTED: March 16, 2011

LONG DESCRIPTION: The 2011.MAY.1stSixMonth.Allocation results and Network Model were posted last night, March 16, 2011. An updated Activity Calendar has also been posted to reflect the new May Auction activity dates. The credit lock date will now be Tuesday, March 29, 2011, at 17:00 CDT. The bid window will now open on Wednesday, March 30, 2011, at 00:00:01 CDT, and the first round bid window will now close on Friday, April 1, 2011, at 17:00 CDT. The Notice for the May Auction will reiterate these dates.

CONTACT: If you have any questions, please contact either the CRR team by email at [log in to unmask] or 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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