Subsidiary

State of Organization

Atlantic Power Holdings, LLC

Delaware

Atlantic Power Services, LLC

Delaware

Atlantic Piedmont Holdings, LLC

Delaware

Atlantic Power (US) GP Holdings, Inc.

Delaware

AP USGP Holdings, LLC

Delaware

Atlantic CDP, Inc.

Delaware

Piedmont Green Power, LLC

Delaware

Atlantic Cadillac Holdings, LLC

Delaware

Cadillac Renewable Energy, LLC

Delaware

Orlando Power Generation I, LLC

Delaware

Orlando Power Generation II, LLC

Delaware

Orlando Cogen Limited, LP

Delaware

Baker Lake Hydro, LLC

Delaware

Olympia Hydro, LLC

Delaware

Koma Kulshan Associates, a California Limited Partnership

California

Harbor Capital Holdings, LLC

Delaware

Epsilon Power Partners, LLC

Delaware

Chambers Cogeneration Limited Partnership

Delaware

Atlantic Ridgeline Holdings, LLC.

Delaware

Delta Person LLC

Delaware

Epsilon Power Funding, LLC.

Delaware

Teton East Coast Generation, LLC.

Delaware

Teton Selkirk, LLC

Delaware

Teton Power Funding, LLC

Delaware

Atlantic Power Services Canada GP Inc.

British Columbia

Atlantic Power Services Canada LP

Ontario

Atlantic Power Limited Partnership (f/k/a Capital Power Income L.P.)

Ontario

Atlantic Power GP Inc. (f/k/a CPI Income Services Ltd.)

British Columbia

Atlantic Power Preferred Equity Ltd. (f/k/a CPI Preferred Equity Ltd.)

Alberta

Atlantic Power Energy Services (Canada) Inc. (f/k/a CP Energy Services (Canada) Inc.)

British Columbia

Atlantic Power (US) GP (f/k/a CP Power (US) GP)

Delaware

Atlantic Power (Coastal Rivers) Corporation (f/k/a Coastal Rivers Power Corporation)

British Columbia

Atlantic Power (Williams Lake) Ltd. (f/k/a CPI Power (Williams Lake) Ltd.)

British Columbia

Atlantic Power FPLP Holdings LLC (f/k/a CPI FPLP Holdings LLC)

Delaware

Frederickson Power Management Inc.

Washington

Atlantic Power GP II Inc.

British Columbia

APLP Holdings Limited Partnership

Ontario

Frederickson Power LP

Washington

APDC, Inc. (f/k/a CPIDC, Inc.)

Washington

AP Power Holdings LLC (f/k/a CPI Power Holdings Inc.)

Delaware

Atlantic Power USA LLC (f/k/a CPI Power USA LLC)

Delaware

Atlantic Power USA Holdings LLC (f/k/a CPI Power Holdings USA LLC)

Delaware

Atlantic Power Enterprises LLC (f/k/a CPI Power Enterprises LLC)

Delaware

Subsidiary

State of Organization

Manchief LLC.

Delaware

Manchief Holding LLC

Delaware

Manchief Power Company LLC

Delaware

Curtis Palmer LLC

Delaware

AP (Curtis Palmer) LLC

Delaware

Curtis/Palmer Hydroelectric Company L.P.

New York

Atlantic Power Energy Services (US) LLC (f/k/a CPI Energy Services (US) LLC)

Delaware

Morris Cogeneration, LLC

Delaware

Atlantic Power USA Ventures, LLC (f/k/a CPI USA Ventures LLC)

Delaware

EF Oxnard LLC

California

EF Kenilworth LLC

California

Applied Energy LLC

California

Ridgeline Energy Holdings LLC

Delaware

Ridgeline Energy LLC

Delaware

Ridgeline Energy Solar LLC

Delaware

Atlantic Midway Ventures LLC

Delaware

Allendale Biomass LLC

Delaware

Atlantic Decker Energy, Inc.

California

Decker Energy – Craven GP LLC

Delaware

Decker Energy – Craven LP LLC

Delaware

Decker Energy Grayling, Inc.

Delaware

Dorchester Biomass, LLC

Delaware

AJD Forest Products Limited Partnership

Michigan

Craven County Wood Energy LP

Delaware

GGS Holdings Company

Delaware

Grayling Development Partners

Michigan

Grayling Partners Land Development, LLC

Michigan

Grayling Generating Station Limited Partnership

Michigan

Javelin Energy, LLC

Delaware