NOTICE DATE: December 6, 2011

NOTICE TYPE: M-B112111-02 General

SHORT DESCRIPTION: Comments received on Draft Amendments to P.U.C. Subst. R. 25.507 (EILS Rule)

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: December 6, 2011

LONG DESCRIPTION: In response to Notice M-B112111-01 concerning draft amendments to P.U.C. Subst. R. 25.507, Electric Reliability Council of Texas, Inc. (ERCOT) received ten sets of comments from interested stakeholders. Nine of the ten submitting parties have authorized ERCOT to disclose these comments.

ERCOT has reviewed and responded to these comments. The comments and ERCOT’s response will be posted to the Demand Side Working Group web page at http://www.ercot.com/committees/board/tac/wms/dswg/, under Key Documents.

CONTACT: If you have any questions about this Notice, please contact Chad V. Seely, Assistant General Counsel, at [log in to unmask] or by telephone at (512) 225-7035 or Nathan Bigbee, Corporate Counsel, at [log in to unmask] or by telephone at (512) 225-7093.

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