The public utility shall accrue interest on the deposit until it is returned or credited.
52 Pa. Code § 56.57
The provisions of this § 56.57 amended under the Public Utility Code, 66 Pa.C.S. § § 331, 501, 504, 1301, 1305, 1401-1419, 1501, 1504, 1509 and 2911.