Wyo. Stat. Ann. § 37-2-120

Whenever, after investigation in accordance with the provisions of this act, the commission shall be of the opinion that any provisions or requirements of this act, or any order of the commission is being, has been, or is about to be violated, it may make and enter of record an order in the premises, specifying the actual or proposed acts or omissions to act which constitute such real or proposed violations, and require that such violations be discontinued or rectified, or both, or that it be prevented. No order, however, shall be made by the commission which requires the change of any rate or service, facility or service regulation except as otherwise specifically provided, unless or until all parties are afforded an opportunity for a hearing in accordance with the Wyoming Administrative Procedure Act.