E7-16385. Ameren Services Company, Northern Indiana Public Service Company, Complainants, v. Midwest Independent Transmission System Operator, Inc., Respondent; Notice of Complaint

August 14, 2007.

Take notice that on August 10, 2007, pursuant to Rule 206 of the Rules of Practice and Procedure and section 206 of the Federal Power Act, Ameren Services Company, on behalf of its affiliates, and Northern Indiana Public Service Company (Complainants) filed a formal complaint against Midwest Independent Transmission System Operator, Inc. (Respondent) alleging that the Revenue Sufficiency Guarantee charge allocation provisions of the Respondent's tariff are unjust, unreasonable and unduly discriminatory, and therefore must be revised. The Complainants request that the Federal Energy Regulatory Commission (Commission) establish the earliest possible refund effective date with respect to the necessary revisions.

The Complainants state that copies of the Complaint were served on the contacts for the Respondent as listed on the Commission's list of Corporate Officials.

Any person desiring to intervene or to protest this filing must file in accordance with Rules 211 and 214 of the Commission's Rules of Practice and Procedure (18 CFR 385.211, 385.214). Protests will be considered by the Commission in determining the appropriate action to be taken, but will not serve to make protestants parties to the proceeding. Any person wishing to become a party must file a notice of intervention or motion to intervene, as appropriate. The Respondent's answer and all interventions, or protests must be filed on or before the comment date. The Respondent's answer, motions to intervene, and protests must be served on the Complainants.

The Commission encourages electronic submission of protests and interventions in lieu of paper using the “eFiling” link at http://www.ferc.gov. Persons unable to file electronically should submit an original and 14 copies of the protest or intervention to the Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426.

This filing is accessible on-line at http://www.ferc.gov,, using the “eLibrary” link and is available for review in the Commission's Public Reference Room in Washington, DC There is an “eSubscription” link on the Web site that enables subscribers to receive e-mail notification when a document is added to a subscribed docket(s). For assistance with any FERC Online service, please e-mail [e-mail], or call [phone] (toll free). For TTY, call [phone].

Comment Date: 5 p.m. Eastern Time on September 4, 2007.

Kimberly D. Bose,

Secretary.