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Boston Generating Files Voluntary Petition for Chapter 11 Reorganization; Seeks Asset Sale through Section 363 of U.S. Bankruptcy Code

As previously announced on August 9, 2010, Constellation Energy (NYSE: CEG) was selected as the stalking horse bidder for the 2,950 MW fleet, the third largest power generating portfolio in the New England region. Constellation Energy signed an asset purchase agreement for approximately $1.1 billion. The proposed transaction is expected to be consummated through the bankruptcy proceedings, in which Constellation Energy's bid is considered the price to be beat in an asset auction. The Company hopes to complete the sale process in 120 days or less, to minimize any disruption to its business.

The majority of the creditors of BostonGen's $1.1 billion first-lien term bank loan, its $250 million first-lien synthetic letter of credit and its $70 million first-lien revolving credit facility have signed a sales support agreement.

The Company intends to continue its business operations throughout the administration of the bankruptcy case and has filed a series of first-day motions in the bankruptcy court, seeking to ensure that there will be no material disruption to its operations during the bankruptcy process and that it will exit the proceedings through a sale as a going concern. Current management will remain in place throughout the process, ensuring that there will be no reliability issues and that the community that relies on the power generated by BostonGen will not be impacted.

Mark Sudbey, Chief Executive Officer of USPowerGen said, "BostonGen is a solid operation. The purpose of these actions, as well as those we have taken over the past several months, is to maximize the value of the business for creditors and to provide a stable working environment for our employees. We will continue to support the communities we serve with uninterrupted power generation. I am confident that these actions will position the assets for long term success."

The Company has the requisite funding in hand to operate in Chapter 11 and with the consent of its first-lien lenders will use cash generated from continuing operations to meet its working capital needs during the bankruptcy process.

About USPowerGen

USPowerGen, through its subsidiaries Astoria Generating Company Holdings, L.L.C. and EBG Holdings LLC, owns and operates eight power generation facilities with a total capacity of over 5,000 Megawatts. These subsidiaries sell their energy and capacity into the NYISO and ISO-New England deregulated markets, representing generation sufficient to serve approximately 20% of the overall load in New York City as well as approximately 50% of the overall load in the Boston metropolitan area. More information regarding USPowerGen can also be found at www.uspowergen.com.

Media Contacts:
USPowerGen
John Reese, Senior Vice President
212-792-0897
jreese@uspowergen.com
or
Sloane & Company
Josh Hochberg, 212-446-1892
jhochberg@sloanepr.com