NOTICE DATE: September 11, 2008

NOTICE TYPE: W-A091108-01 Operations

CLASSIFICATION: Public

SHORT DESCRIPTION: New McCamey area Wind-powered Generation Resource

INTENDED AUDIENCE: QSE and Resource Entities

DAY AFFECTED: September 11, 2008

LONG DESCRIPTION: A new McCamey Area Wind-powered Generation Resource (WPGR) is in the final stages of pre-synchronization. This new WPGR will affect the allocation of Tradable Generation Rights (TGRs) in the McCamey Area.

In accordance with Protocol Section 7.8.7, Accommodation of New or Recommissioned WPGRs, ERCOT will reallocate TGRs once the Resource has demonstrated that the anticipated capacity factor for the first month on commercial operation is greater than or equal to ten percent (10%). ERCOT will allocate TGRs to the QSE scheduling the WPGR as of the first day of expected commercial operation, which is today, Thursday, September 11, 2008.

ADDITIONAL INFORMATION: Information, including the updated map and daily wind limit postings will be available at:

https://tcr.ercot.com/default.cfm?func=tcrpostings

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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