Great Northern Power Development
Great Northern Power Development (GNPD) was created to develop projects incorporating the coal and lignite reserves owned by its affiliated partnership: Great Northern Properties Limited Partnership (GNP), the nation’s largest private owner of coal reserves. According to a North Dakota State press release, "While GNP was formed solely for the leasing and management of its mineral land interests, GNPD was formed to assume the responsibility for all aspects of project development, including project management, financing, feasibility studies, permitting, land control, business development, contracts and mine development. Both GNP and GNPD are headquartered in Houston, Texas." 
-  Industrial Commission of North Dakota Press Release, accessed December 10, 2009.