Exhibit 21
BLACK HILLS CORPORATION
ACTIVE WHOLLY OWNED DIRECT AND INDIRECT SUBSIDIARIES
Acquisition Partners, LP, a New York limited partnership
Adirondack Hydro Development Corporation, a Delaware corporation
Black Hills Cabrestro Pipeline, LLC, a Delaware limited liability company
Black Hills Colorado, LLC, a Delaware corporation
Black Hills Energy, Inc., a South Dakota corporation
Black Hills Energy Pipeline, LLC, a Delaware limited liability company
Black Hills Energy Resources, Inc., a South Dakota corporation
Black Hills Energy Terminal, LLC, a South Dakota limited liability company
Black Hills Exploration and Production, Inc., a Wyoming corporation
BHFC Publishing, LLC, a Delaware limited liability company
Black Hills FiberCom, LLC, a South Dakota corporation
Black Hills Fiber Systems, Inc., a South Dakota corporation
Black Hills Fountain Valley, LLC, a Delaware limited liability company
Black Hills Fountain Valley II, LLC, a Colorado limited liability company
Black Hills Generation, Inc., a Delaware corporation
Black Hills Harbor, LLC, a Delaware limited liability company
Black Hills Idaho Operations, LLC, a Delaware limited liability company
Black Hills Kilgore Energy Pipeline, LLC, a Delaware limited liability company
Black Hills Kilgore Pipeline Company, L.P., a Texas limited partnership
Black Hills Kilgore Pipeline, Inc., a Delaware corporation
Black Hills Long Beach, Inc., A Delaware corporation
Black Hills Millennium Pipeline, Inc., a South Dakota corporation
Black Hills Millennium Terminal, Inc., a South Dakota corporation
Black Hills Nevada, LLC, a Delaware limited liability company
Black Hills Nevada Operations, LLC, a Delaware limited liability company
Black Hills Nevada Real Estate Holdings, LLC, a Delaware limited liability company
Black Hills North America, Inc., a Delaware corporation
Black Hills Ontario, LLC, a Delaware limited liability company
Black Hills Operating Company, LLC, a Delaware limited liability company
Black Hills Power, Inc., South Dakota corporation
Black Hills Publishing Montana, LLC, a Delaware limited liability company
Black Hills Southwest, LLC, a Delaware limited liability company
Black Hills Valmont Colorado, Inc., a Delaware corporation
Black Hills Wyoming, Inc., a Wyoming corporation
Daksoft, Inc., a South Dakota corporation
E-Next A Equipment Leasing Company, LLC, a Delaware limited liability company
EIF Investors, Inc., a Delaware corporation
Enserco Energy, Inc., a South Dakota corporation
Fountain Valley Power, LLC, a Delaware limited liability company
Harbor Cogeneration Company, a California general partnership
Indeck North American Power Fund, LP, a Delaware limited liability company
Indeck North American Power Partners, LP, a Delaware limited liability company
Indeck Pepperell Power Associates, Inc., a Delaware corporation
Landrica Development Company, a South Dakota corporation
Las Vegas Cogeneration II, LLC, a Delaware limited liability company
Las Vegas Cogeneration Energy Financing Company, LLC, a Delaware limited liability company
Mallon Oil Company, a Colorado corporation
Mallon Resources Corporation, a Colorado corporation
Millennium Pipeline Company, L.P., a Texas limited partnership
Millennium Terminal Company, L.P., a Texas limited partnership
NHP, LP, a New York limited partnership
North American Funding, LLC, a Delaware limited liability company
Sunco Ltd., a Nevada limited liability company
Wyodak Resources Development Corp., a Delaware corporation
