Founded in 1955, Intermountain Gas Company, a subsidiary of MDU Resources Group, Inc, has grown along with Idaho. Today, Intermountain Gas Company is a natural gas distribution company serving approximately 305,000 residential, commercial, and industrial customers in 74 communities in southern Idaho. Intermountain Gas Company is committed to making the best possible use of our natural resources. Our energy solutions can show you how to save energy AND save money with natural gas. Natural gas is an economical, efficient energy source that provides comfortable heat. Visit our website or give us a call and let us help you develop a plan to start saving today.