(a) In the conduct of hearings under this title and making his order thereon, the commissioner shall act in a quasi-judicial capacity.
(b) Within 30 days after termination of the hearing, or of any rehearing thereof or reargument thereon, or within such other period as may be specified in this title as to particular proceedings, the commissioner shall make his order on hearing, covering matters involved in such hearing and in any such rehearing or reargument, and shall give a copy of such order to the same persons given notice of the hearing and to all parties to the hearing.
(c) The order shall contain a concise statement of the facts as found by the commissioner, his conclusions therefrom, and the matters required by Section 27-2-18.
(d) The order may affirm, modify, or rescind action theretofore taken or may constitute the taking of new action within the scope of the notice of hearing.
(e) This section does not apply as to hearings provided for in Chapter 13 of this title.