TORONTO, ONTARIO, Jul 13, 2005 (CCNMatthews via COMTEX) -- Atlantic Power (TSX:ATP.UN) will release its financial results for the three and six months ended June 30, 2005 on the afternoon of Thursday, August 11, 2005. A telephone conference call hosted by Atlantic Power's management team will be held:

Friday, August 12, 2005 at 11:00 am ET

The telephone numbers for the conference call are:

                               (416) 340-8010
                               (866) 540-8136

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

The telephone numbers to listen to the conference call after it is completed (Instant Replay) are (416) 695-5800 or (800) 408-3053. Please enter the passcode 3158840# when instructed. The Instant Replay will be available until midnight, August 18, 2005. 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 power generation projects located primarily in major markets in the United States. Atlantic Power's objectives are to sustain and grow its cash distributions over the long term by enhancing the performance of its existing assets and by making accretive acquisitions.

Atlantic Power Corporation
Barry Welch
(617) 531-6379
info@atlanticpowercorporation.com
www.atlanticpowercorporation.com.

NEWS RELEASE TRANSMITTED BY CCNMatthews