For more than 100 years, NorthWestern Energy has delivered the energy and exceptional service that our customers and communities count on – safely, efficiently and responsibly.We own and operate natural gas production, transmission and distribution systems serving 282,600 customers. We own and operate a diverse generation fleet of wind, water, natural gas and coal-fired resources* and the high-voltage transmission system and distribution system that reliably delivers responsibly-produced electricity to more than 427,000 customers daily. Visit our Website11 E. Park St., Butte, MT1-888-467-2669 ...