Maryland Code, Public Utilities § 2-106

(1) represent the Commission in a proceeding if the Commission is a party to or desires to intervene in the proceeding, if the proceeding involves a question under this division, or if the proceeding involves an act or order of the Commission;

(2) advise the Commission, on request, on any legal question that requires interpretation of a provision of law about the jurisdiction, rights, duties, or powers of the Commission; and

(3) act as attorney to the Commission as the Commission reasonably requires.