Minnesota Power's Great Northern Transmission Line received another approval. FERC approved a facilities construction agreement required to build this 500-kV, 220-mile line that will run from the Canadian-U.S. border northwest of Roseau, Minn. to an expanded Blackberry electric substation east of Grand Rapids, Minn. The Great Northern Line, under development by Minnesota Power and the Manitoba Hydro subsidiary, has an anticipated in-service date of June 1, 2020. It will provide 883 MW of transmission capacity, of which 383 MW will be used to deliver hydroelectric power purchased from Manitoba Hydro to serve Minnesota Power's customers. Total project cost in the U.S., is estimated to be between $560 million and $710 million, depending on the final route of the line. Minnesota Power is expected to have majority ownership of the transmission line.