S.C. Code Ann. § 58-27-140: General powers of Commission.

The commission may, upon petition:

(1) ascertain and fix just and reasonable standards, classifications, regulations, practices, or service to be furnished, imposed, observed, and followed by any or all electrical utilities;

(2) ascertain and fix by regulation adequate and reasonable standards for the measurement of quality, quantity, initial voltage, or other condition pertaining to the supply of the product, commodity, or service furnished or rendered by any or all electrical utilities;

(3) prescribe reasonable regulations for the examination and testing of such product, commodity, or service and for the measurement thereof; and

(4) establish or approve reasonable rules, regulations, specifications, and standards to secure the accuracy of all meters and appliances for measurement.