NorthWestern Energy formally known as NorthWestern Corporation is a public utility company in the United States. It is a privately held utility company that is engaged in providing electric and natural gas services. It was founded in 1923 to serve a small area of South Dakota and Nebraska and offers various services including the generation, sale, transmission and distribution of electricity in Montana, South Dakota and Nebraska in the United States. It serves millions of residential, commercial and industrial clients and at least 15 rural electric cooperatives with electric and natural gas services through its transmission and distribution network. NorthWestern Energy also offers Affordable Rates, Friendly Service, Online Bill Payment and World Class Support services to the people. It is one of the leading electricity and natural gas services providing companies in the northwest quadrant of the United States. The contact details like address, contact number, customer care number and customer service phone number of Northwestern Energy Montana is displayed above.