HAGERSTOWN, Md., July 28, 2003 -- Allegheny Energy Inc. subsidiary Allegheny Energy Supply Company, LLC, announced that its Allegheny Trading Finance unit has signed a definitive agreement to sell its energy supply contract with the California Department of Water Resources (CDWR) and associated hedge transactions to J. Aron & Company, a division of The Goldman Sachs Group, for $405 million.

The sale price is subject to adjustment (up or down) based both upon changes in the mark-to-market value at closing and upon the number of trades to be assumed by J. Aron. Proceeds from the sale will be used to reduce debt and improve liquidity, as well as to fund the cost of continuing to reduce the Company's financial exposure to energy trading.

Paul J. Evanson, Chairman, President, and Chief Executive Officer of Allegheny Energy, said, "The sale of these contracts will not only improve our liquidity and financial condition, but will also sharply reduce further volatility in earnings and cash flow. This sale and the $300-million convertible trust security placement announced on Friday are two major steps in restoring the financial health of Allegheny Energy."

The sale is subject to customary closing conditions, approval of a majority of Allegheny's bank lenders, and regulatory approvals. The companies anticipate closing the transaction by the end of the year.

Allegheny Energy Supply recently renegotiated the contract with the CDWR, which now will provide up to 800 MW of electricity in the remaining nine years of the 11-year contract. The renegotiated contract settlement was approved by the Federal Energy Regulatory Commission on July 11, 2003, and is anticipated to become final and unappealable on August 10, 2003.

Citigroup served as Allegheny's financial advisor for the transaction, and Sullivan & Cromwell served as Allegheny's legal advisor.

With headquarters in Hagerstown, Md., Allegheny Energy is an integrated energy company with a balanced portfolio of businesses, including Allegheny Energy Supply, which owns and operates electric generating facilities and supplies energy and energy-related commodities, and Allegheny Power, which delivers low-cost, reliable electric and natural gas service to about three million people in Maryland, Ohio, Pennsylvania, Virginia, and West Virginia. More information about the Company is available at www.alleghenyenergy.com.