About Atlantic PowerAtlantic Power is a leading publicly traded, power generation and infrastructure company with a well-diversified portfolio of assets in the United States and Canada. The Company's power generation projects sell electricity to utilities and other large commercial customers under long-term power purchase agreements, which seek to minimize exposure to changes in commodity prices. The net generating capacity of the Company's projects is approximately 2,117 MW, consisting of interests in 30 operational power generation projects across 11 states and 2 provinces and also an 84-mile, 500 kilovolt electric transmission line located in California. In addition, the Company has an approximately 300 MW wind project under construction in Oklahoma, which is expected to achieve commercial operation later this year and a 53 MW biomass project under construction in Georgia, which is expected to achieve commercial operation in the first quarter of 2013. Atlantic Power also owns a majority interest in Rollcast Energy, a biomass power plant developer in Charlotte, NC. Atlantic Power is incorporated in British Columbia, headquartered in Boston and has offices in Chicago, Toronto, Vancouver and San Diego.The Company's corporate strategy is to increase the value of the Company through accretive acquisitions in North American markets while generating stable, contracted cash flows from its existing assets to sustain its dividend payout to shareholders. The Company's dividend is currently paid monthly at an annual rate of Cdn$1.15 per share. Atlantic Power has a market capitalization of approximately $1.3 billion and trades on the New York Stock Exchange under the symbol AT and on the Toronto Stock Exchange under the symbol ATP. For more information, please visit the Company's website at www.atlanticpower.com or contact: Atlantic Power Corporation Amanda Wagemaker, Investor Relations(617) 977-2700 firstname.lastname@example.org Copies of financial data and other publicly filed documents are filed on SEDAR at www.sedar.com or on EDGAR at www.sec.gov/edgar.shtml under "Atlantic Power Corporation" or on the Company's website. Cautionary Note Regarding Forward-looking Statements To the extent any statements made in this news release contain information that is not historical, these statements are forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended and forward-looking information as defined under Canadian securities law (collectively, "forward-looking statements").