Minnesota Power energizes 250 MW Great Northern Transmission Line
Minnesota Power, a utility division of ALLETE Inc., has energized its Great Northern Transmission Line, bringing online an innovative delivery and storage system for renewable energy that spans two states and one Canadian province.
The 500 kV line is now delivering 250 megawatts of carbon-free hydropower from Manitoba, Canada, to Minnesota Power customers.
Minnesota Power completed the Great Northern Transmission Line (GNTL) in February 2020, ahead of schedule and under budget. The 224-mile line runs from the Canadian border in Roseau County to a substation near Grand Rapids, Minnesota. It consists of 800 tower structures that were fabricated in the United States and used 10,000 tons of North American steel. About 2,200 miles of wire were required to install the line’s conductors. The GNTL also is contributing significant property tax revenue to local communities along the route.
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