Northern States Power Company is now a subsidiary of what utility holding company based in Minneapolis, Minnesota?
Northern States Power Company Northern States Power Company (NYSE: NSP ) was a publicly traded S&P 500 electric and natural gas utility holding company based in Minneapolis, Minnesota that is now a subsidiary of Xcel Energy ().
MDU Resources MDU Resources Group, Inc. () is a U.S. diversified energy company, with electric and natural gas utility distribution operations in Idaho, Minnesota, Montana, North Dakota, Oregon, South Dakota, Washington, and Wyoming.