Item 8.01 Other Events.

On August 10, 2009, Allegheny Energy, Inc. (the "Company"), issued a press release announcing that its wholly-owned subsidiary, Allegheny Energy Supply Company, LLC ("AE Supply"), has commenced a tender offer to purchase up to $160,000,000 principal amount of its outstanding 8.25% Notes due 2012, and up to $100,000,000 principal amount of its outstanding 7.80% Notes due 2011. The press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The tender offer will expire at midnight, New York City time, on September 4, 2009, unless extended, and is subject to, and conditioned upon, the satisfaction or waiver of the general conditions described in the offer to purchase, dated August 10, 2009. The information contained in this report is neither an offer to purchase nor a solicitation of an offer to sell any notes. The tender offer is being made by AE Supply pursuant to the offer to purchase and letter of transmittal, copies of which will be delivered to all holders of the 8.25% Notes due 2012 and the 7.80% Notes due 2011.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description
99.1 Press Release dated August 10, 2009

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