Me. Rev. Stat. tit. 35-A, § 1909

The commission may on its own motion, with or without notice, summarily investigate the exercise of market power by a gas utility, natural gas pipeline utility or pipeline capacity holder. If, after the summary investigation, the commission determines it to be necessary, it may hold a public hearing in accordance with section 1304. Notwithstanding section 1304 and Title 5, section 9052, the commission shall notify the utility under investigation in writing of the matter under investigation and 7 days after the commission has given notice the commission may set the time and place for the public hearing.