(1) A utility may not backbill customers for any period greater than 12 months for any undercharge in billing which is the result of the utility’s mistake. The utility shall allow the customer to pay for the unbilled service over the same time period as the time period during which the underbilling occurred or some other mutually agreeable time period. The utility shall not recover in a ratemaking proceeding any lost revenues which inure to the utility’s detriment on account of this provision.
    (2) In the event of overbillings, the utility shall refund the overcharge to the customer for the period during which the overcharge occurred, based on available records. If commencement of the overcharging cannot be fixed, then an estimate of the overcharge shall be made, based on past consumption, and refunded to the customer. The amount and period of the adjustment shall be based on the available records. The refund shall not include any part of a minimum charge.
    (3) In the event of an overbilling, the customer may elect to receive the refund as a credit to future billings or as a one-time credit.
Rulemaking Authority 367.121 FS. Law Implemented Florida Statutes § 367.121. History-New 5-8-91, Amended 2-4-13.