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2. Minnesota Public Utilities Commission. Upper midwest transmission development initiative. Executive Committee Final Report. 2010
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4. Minnesota Department of Commerce. The next generation renewable energy objective: Minnesota’s smart renewable energy standard. 2007, http://www.state.mn.us/mn/externalDocs/Commerce/The_Next_Generation_Renewable_Energy_Objective_2007_012207111157_REO%20Report2007.pdf
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