S.C. Code Ann. § 58-27-2780

Within thirty days of the issuance of an Initial Order pursuant to Section 58-27-2760, or within thirty days of the failure by the commission to issue an order as required pursuant to Section 58-27-2760, any aggrieved party may petition the commission for review of the Initial Order or failure to issue an order and all interested parties of record shall have a right to be heard at an evidentiary hearing on the matter. The party shall serve a copy of such petition on the Office of Regulatory Staff and other parties of record on the same day and by the same means as it is provided to the commission.