Md. Code, Public Utilities § 5–301

(a) Except as otherwise provided by law, this section does not apply to a requirement or violation of:

(1) Subtitle 4 of this title;

(2) Title 7, Subtitle 1 of this article;

(3) Title 8, Subtitles 1 and 3 of this article; or

(4) Title 9, Subtitle 3 of this article.

(b) A public service company:

(1) shall comply fully with the requirements of this division; and

(2) may not violate any provision of this division.