N.D. Cent. Code § 49-05-01: Who may make a complaint

Complaint may be made by the commission on its own motion, or by any person or association, by petition or complaint in writing, setting forth any fact or thing done or omitted to be done by any public utility, including any rule, regulation, or rate established or fixed by or for any public utility, in violation or claimed violation of any provision of law or any order or rule of the commission.