Section 39-16-20 - Supplementary powersThe authority, in addition to any other powers granted in this chapter, has the following powers in order to assist it in setting rates:
(1) To conduct examinations and hearings and to hear testimony and take proof, under oath or affirmation, at public or private hearings, on any matter material for its information and necessary to carry out the terms of this chapter;(2) To issue subpoenas, necessary to carry out the terms of this chapter, requiring the attendance of witnesses and the production of books and papers pertinent to any hearing before the authority, or before one or more of the members of the authority appointed by it to conduct the hearing; and(3) To apply to any court, having territorial jurisdiction of the offense, to have punished for contempt any witness who refuses to obey a subpoena, or who refuses to be sworn or affirmed to testify, or who is guilty of any contempt after summons to appear.R.I. Gen. Laws § 39-16-20