K N Energy, Inc. v. City of Casper

*208THOMAS, Justice.

This case presents directly the question of the authority of a Wyoming municipality to regulate a public utility by enactment of a licensing ordinance. K N Energy, Inc., doing business as Northern Utilities Division of K N Energy, Inc. (Northern), instituted a declaratory judgment action in the district court seeking a declaration that the ordinance adopted by the City of Casper (Casper) is void. The district court declared specific provisions of the ordinance to be invalid and unenforceable because of conflict with the regulatory authority over public utilities assigned by…