R.I. Gen. Laws § 39-4-15

Notice of the time and place for a hearing and investigation shall be given to the public utility and to such other interested persons as the division shall deem necessary, as provided in § 39-4-5, and thereafter the proceedings shall be had and conducted in reference to the matter investigated in like manner as though a complaint had been filed with the division relative to the matter investigated, and the same order or orders may be made in reference thereto as if the hearing and investigation had been made on a complaint.