Upon the request of any person subject to the provisions of this Chapter or upon its own motion, the Commission may, for good cause, waive any of the requirements of this Chapter that are not required by statute. The waiver may not be inconsistent with the purpose of this Chapter or Title 35-A. The Commission, the Director of Electric and Natural Gas Industries, the Director of Consumer Assistance and Safety, or the Presiding Officer assigned to a proceeding related to this Chapter may grant the waiver.