About Atlantic PowerAtlantic Power owns and operates a diverse fleet of power generation and infrastructure assets in the United States and Canada. Atlantic Power's power generation projects sell electricity to utilities and other large commercial customers largely under long-term PPAs, which seek to minimize exposure to changes in commodity prices. Its power generation projects in operation have an aggregate gross electric generation capacity of approximately 3,366 MW in which its aggregate ownership interest is approximately 2,117 MW. These totals exclude projects designated as held for sale at December 31, 2012 and its 40% interest in the Delta-Person generating station for which Atlantic Power entered into an agreement to sell in December 2012. On January 31, 2013, Atlantic Power and certain of its subsidiaries entered into an agreement to sell their interests in the Auburndale Power Partners, L.P., Lake CoGen, Ltd and Pasco CoGen, Ltd. projects. On March 8, 2013, Atlantic Power entered into a purchase and sale agreement to sell its 100% interest in its Path 15 transmission line. Its current portfolio of continuing operations consists of interests in 29 operational power generation projects across 11 states in the United States and two provinces in Canada. In addition, Atlantic Power has one 53 MW biomass project under construction in Georgia. Recently, Atlantic Power acquired a wind and solar development company, Ridgeline Energy, Inc., located in Seattle, Washington, which will enhance its ability to develop, construct, and operate wind and solar energy projects across the United States and Canada. Atlantic Power also owns a majority interest in Rollcast Energy, a biomass power plant developer in North Carolina. Atlantic Power has a market capitalization of approximately $650 million 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").