Requires public utilities to maintain customer billing records for duration of account and to refund full amount of any overpayment by customers.

This bill requires public utilities in New Jersey to keep complete billing records for the entire time a customer has an account. It mandates that utilities refund customers in full (including interest) for any overpayment they made, as required by existing law. The law ensures utilities can accurately resolve billing disputes by maintaining detailed account histories. This directly affects utility customers who may overpay and the utilities responsible for managing billing records and refunds.