TORONTO, ONTARIO -- (MARKET WIRE) -- 04/12/10 -- Atlantic Power Corporation ("Atlantic Power") (TSX: ATP)(TSX: ATP.DB)(TSX: ATP.DB.A) will release its financial results for the three months ended March 31, 2010 on the afternoon of Friday, May 14, 2010. A telephone conference call hosted by Atlantic Power's management team will be held:

                     Monday, May 17, 2010 at 10.00 am ET

The telephone numbers for the conference call are:

                    Local / International: (416) 849-2698

                  North American Toll Free: (866) 400-2270

The Conference Call will also be broadcast over Atlantic Power's website at www.atlanticpower.com. Please call or log in 10 minutes prior to the call.

Replay/Archive

The telephone numbers to listen to the conference call after it is completed (Instant Replay) are local (416) 915-1035 or toll free (866) 245-6755. Please enter the passcode 685153# when instructed. The Instant Replay will be available until midnight, May 24, 2010. The conference call will also be archived on Atlantic Power's web site.

About Atlantic Power

Atlantic Power Corporation owns interests in a diversified portfolio of 12 power generation projects and one transmission line located in major markets in the United States. The Company'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. For more information, please visit the Company's website at www.atlanticpower.com.

Contacts:
Atlantic Power Corporation
Patrick Welch
Chief Financial Officer
(617) 977-2700
info@atlanticpower.com