Maryland Code, Public Utilities § 2-112

(a)(1) Except as provided in paragraph (2) of this subsection, to the full extent that the Constitution and laws of the United States allow, the Commission has jurisdiction over each public service company that engages in or operates a utility business in the State and over motor carrier companies as provided in Title 9 of this article.

(2) Except as provided in Title 5, Subtitle 6, Part VI of the Corporations and Associations Article, the Commission does not have jurisdiction over a member-regulated cooperative as defined in § 5-601 of the Corporations and Associations Article.

(b)(1) The Commission has the powers specifically conferred by law.

(2) The Commission has the implied and incidental powers needed or proper to carry out its functions under this division.