Atlantic Power Corporation Announces Completion of NYSE Share Listing

BOSTON, MASSACHUSETTS--(Marketwire - July 22, 2010) - Atlantic Power Corporation (TSX:ATP)(TSX:ATP.DB)(TSX:ATP.DB.A) (the "Company") today announced the completion of the U.S. regulatory approval process for the listing of its shares on the New York Stock Exchange ("NYSE"). The Company's shares will begin trading on the NYSE on Friday July 23, 2010 under the symbol AT.

"We are very pleased to commence our NYSE listing, which we expect will provide a more liquid and transparent market for our U.S. investors," said Barry Welch, President and CEO of Atlantic Power, "The NYSE is the largest, most liquid market in the world and we are excited about the opportunities our listing presents for us as we continue to execute our business strategy."

About Atlantic Power

Atlantic Power Corporation is an independent power producer with power generation and transmission projects located in the United States. Atlantic Power's objectives are to maintain the stability of dividends to its shareholders and increase the long term value of the Company by enhancing the performance of its existing assets and by making accretive acquisitions.

Certain statements in this news release may constitute "forward-looking statements", which reflect the current expectations of the Company regarding future growth, performance and business prospects and opportunities. These statements, which are based on certain assumptions and describe our future plans, strategies and expectations, can generally be identified by the use of the words "may," "will," "project," "continue," "believe," "intend," "anticipate," "expect" or similar expressions that are predictions of or indicate future events or trends and which do not relate solely to present or historical matters. Forward-looking statements involve significant risks and uncertainties, should not be read as guarantees of future performance or results, and will not necessarily be accurate indications of whether or not, or the times at or by which, events will occur. Please refer to the factors discussed under "Risk Factors" in the Company's registration statement on Form 10, as filed with the Securities and Exchange Commission on July 21, 2010, for a detailed discussion of the risks and uncertainties affecting our Company. Although the forward-looking statements contained in this news release are based upon what are believed to be reasonable assumptions, investors cannot be assured that actual results will be consistent with these forward-looking statements, and the differences may be material. These forward-looking statements are made as of the date of this news release and, except as expressly required by applicable law, the Company assumes no obligation to update or revise them to reflect new events or circumstances.

FOR FURTHER INFORMATION PLEASE CONTACT:
        Atlantic Power Corporation
        Patrick Welch
        (617) 977-2700
        info@atlanticpower.com
        www.atlanticpower.com

Source: Atlantic Power Corporation
Contact: Atlantic Power Corporation Patrick Welch (617) 977-2700 info@atlanticpower.com www.atlanticpower.com