When a hearing is ordered, the Commission shall have the authority to suspend such rates, charges, fees, and rules and regulations for no more than 60 days or to declare them to be interim, or both. Interim rates, fees, and charges shall be subject to refund with interest until such time as the Commission has made its final determination in the proceeding. Upon completion of the hearing and decision, the Commission may order such public utility to refund, with interest at a rate set by the Commission, the portion of such rates, charges, or fees found not justified by its decision.
Va. Code § 56-265.13:6