Press Release

DBRS Releases Report on Atlantic Power Limited Partnership

Utilities & Independent Power
August 17, 2012

DBRS has today released a report on Atlantic Power Limited Partnership that provides further detail on the recent confirmation of Atlantic Power Limited Partnership’s Senior Unsecured Debt and Medium-Term Notes (the Notes) at BB and Atlantic Power Preferred Equity Ltd.’s Cumulative Preferred Shares at Pfd-4, both with Stable trends. The recovery rating of the Notes is RR4 (indicating an expected recovery of 30% to 50%).

Today’s report and the August 14, 2012, press release, are available at www.dbrs.com or by contacting us at info@dbrs.com.