Atlantic Power Corporation Announces Second Quarter 2010 Results & Conference Call

TORONTO, ONTARIO--(Marketwire - July 27, 2010) - Atlantic Power Corporation ("Atlantic Power") (TSX:ATP)(TSX:ATP.DB)(TSX:ATP.DB.A)(NYSE:AT) will release its financial results for the three and six months ended June 30, 2010 on the afternoon of Monday, August 9, 2010. A telephone conference call hosted by Atlantic Power's management team will be held:

                  Wednesday, August 11, 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 533680# when instructed. The conference call will also be archived on Atlantic Power's web site.

About Atlantic Power

Atlantic Power Corporation is an independent power producer that owns interests in a diversified fleet of 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. For more information, please visit the Company's website at www.atlanticpower.com.

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

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