Serving the Highline community since 1950, Shelby Gas Association is a local and member owned distribution cooperative of natural gas in Shelby and North Toole County. Shelby Gas Association is managed through an agreement between Marias River Electric Cooperative and Shelby Gas Association. We are a non-profit association governed by our elected Board of Directors. Listed below are the Board of Directors, Employees and natural gas rates currently in effect. We are proud to be your member owned natural gas cooperative.