Notice of Filing

In the matter of: Ameren Corporation on behalf of: Union Electric Company, Central Illinois Public Service Company; American Electric Power Service Corporation on behalf of: Appalachian Power Company, Columbus Southern Power Company, Indiana Michigan Power Company, Kentucky Power Company, Kingsport Power Company, Ohio Power Company, Wheeling Power Company; Consumers Energy and Michigan Electric Transmission Company; Detroit Edison Company and International Transmission Company; Exelon Corporation on behalf of: Commonwealth Edison Company, Commonwealth Edison Company of Indiana, Inc.; FirstEnergy Corp. on behalf of: American Transmission Systems, Inc., The Cleveland Electric Illuminating Company, Ohio Edison Company, Pennsylvania Power Company, The Toledo Edison Company, Illinois Power Company; Northern Indiana Public Service Company; The Dayton Power and Light Company; Virginia Electric and Power Company.

Take notice that on June 15, 2001, Alliance Companies tendered for filing with the Federal Energy Regulatory Commission (Commission) an amendment to its May 15, 2001 supplemental compliance filing in the above-referenced proceedings.

Any person desiring to be heard or to protest such filing should file a motion to intervene or protest with the Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426, in accordance with Rules 211 and 214 of the Commission's Rules of Practice and Procedure (18 CFR 385.211 and 385.214). All such motions and protests should be filed on or before June 26, 2001. Protests will be considered by the Commission to determine the appropriate action to be taken, but will not serve to make protestants parties to the proceedings. Any person wishing to become a party must file a motion to intervene. Copies of this filing are on file with the Commission and are available for public inspection. This filing may also be viewed on the Internet at http://www.ferc.fed.us/online/rims.htm (call 202-208-2222 for assistance). Comments, protest and interventions may be filed electronically via the internet in lieu of paper. See, 18 CFR 385.2001(a)(1)(iii) and the instructions on the Commission's web site at http://www.ferc.fed.us/efi/doorbell.htm.