If the utility has inadvertently overcharged a customer as a result of a misapplied schedule, an error in reading the meter, a skipped meter reading, or any other human or machine error, except as provided in 1 of this rule, the utility shall, at the customer's option, credit or refund the excess amount paid by that customer or credit the amount billed as provided by the following:
(a) If the interval during which the customer was overcharged can be determined, then the utility shall credit or refund the excess amount charged during that entire interval provided that the applicable statute of limitations shall not be exceeded.(b) If the interval during which the customer was overcharged cannot be determined, then the utility shall credit or refund the excess amount charged during the 12-month period preceding the date when the billing error was discovered.(c) If the exact usage and/or demand incurred by the customer during the billing periods subject to adjustment cannot be determined, then the refund shall be based on an appropriate estimated usage and/or demand.S.C. Code Regs. § 103-733.2
Amended by State Register Volume 48, Issue No. 05, eff. 5/24/2024.