N.C. Gen. Stat. § 62-148: Rates on leased or controlled utility.

If any public utility operating in the State other than a motor carrier is owned, controlled or operated by lease or other agreement by any other public utility doing business in the State, its rates may, in the discretion of the Commission, be determined for such public utility by the rates prescribed for the public utility which owns, controls or operates it. (Ex. Sess. 1908, c. 144, s. 2; C.S., s. 3490; 1963, c. 1165, s. 1.)