S.C. Code Ann. § 58-27-820

Under rules and regulations prescribed by the commission, every electrical utility must file with the commission and provide to the Office of Regulatory Staff, within such time and in such form as the commission may designate, schedules showing all rates, service rules and regulations, and forms of service contracts established by the electrical utility and collected or enforced or to be collected or enforced within the jurisdiction of the commission. Under rules and regulations prescribed by the commission, every distribution electric cooperative and consolidated political subdivision must file with the commission and provide to the Office of Regulatory Staff, for information purposes, within such time and in such form as the commission may designate, schedules showing all rates, service rules and regulations, and forms of service contracts established by the distribution electric cooperative or consolidated political subdivision. Each electrical utility, distribution electric cooperative, and consolidated political subdivision must keep copies of the schedules open to public inspection under rules and regulations prescribed by the commission.