Exhibit 21
BLACK HILLS CORPORATION
SUBSIDIARIES
December 31, 2008
Black Hills Artesia, LLC, a Delaware limited liability company |
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Black Hills Cabresto Pipeline, LLC, a Delaware limited liability company |
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Black Hills Electric Generation, LLC, a South Dakota limited liability company |
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Black Hills Energy Resources, Inc., a South Dakota corporation |
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Black Hills Exploration and Production, Inc., a Wyoming corporation |
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Black Hills Gas Holdings Corp., a Colorado corporation |
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Black Hills Gas Resources, Inc., a Colorado corporation |
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Black Hills Idaho Operations, LLC, a Delaware limited liability company |
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Black Hills Independent Power Fund, Inc., a Texas corporation |
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Black Hills Ivanpah GP, LLC, a Delaware limited liability company |
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Black Hills Ivanpah, LLC, a Delaware limited liability company |
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Black Hills Midstream, LLC, a South Dakota limited liability company |
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Black Hills Non-regulated Holdings, LLC, a South Dakota limited liability company |
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Black Hills Ocotillo, LLC, a Delaware limited liability company |
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Black Hills Ontario, LLC, a Delaware limited liability company |
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Black Hills Pepperell Power Associates, LLC, a Delaware limited liability company |
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Black Hills Plateau Production, LLC, a Delaware limited liability company |
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Black Hills Power, Inc., a South Dakota corporation |
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Black Hills Service Company, LLC, a South Dakota limited liability company |
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Black Hills Utility Holdings, Inc., a South Dakota corporation |
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Black Hills Waterville Station, LLC, a South Dakota limited liability company |
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Black Hills Wyoming, Inc., a Wyoming corporation |
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Black Hills/Colorado Electric Utility Company, LP, a Delaware limited partnership |
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Black Hills/Colorado Gas Utility Company, LP, a Delaware limited partnership |
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Black Hills/Colorado Utility Company II, LLC, a Colorado limited liability company |
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Black Hills/Colorado Utility Company, LLC, a Colorado limited liability company |
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Black Hills/Iowa Gas Utility Company, LLC, a Delaware limited liability company |
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Black Hills/Kansas Gas Utility Company, LLC, a Kansas limited liability company |
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Black Hills/Nebraska Gas Utility Company, LLC, a Delaware limited liability company |
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Bloomfield Glenns Ferry, Inc., a Virginia corporation |
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Bloomfield Idaho Management, Inc., a Delaware corporation |
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Bloomfield Rupert, Inc., a Virginia corporation |
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Buick Power, LLC, a Delaware limited liability company |
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Cheyenne Light, Fuel and Power Company, a Wyoming corporation |
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Daksoft, Inc., a South Dakota corporation |
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EIF Investors, Inc., a Delaware corporation |
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Enserco Energy Inc., a South Dakota corporation |
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Enserco Midstream, LLC, a South Dakota limited liability company |
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Glenns Ferry Cogeneration Partners, Ltd., a Colorado limited partnership |
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Glenns Ferry Management, Inc., a Delaware corporation |
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Natural/Peoples Limited Liability Company, a Wyoming limited liability company |
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Rupert Cogeneration Partners, Ltd., a Colorado limited partnership |
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Rupert Management, Inc., a Delaware corporation |
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Varifuel, LLC, a South Dakota limited liability company |
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West Cascade Energy, LLC, a Delaware limited liability company |
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Wyodak Resources Development Corp., a Delaware corporation |