Maine Public Service Company is a regulated electric transmission and distribution utility serving all of Aroostook County and a portion of Penobscot County in northern Maine. The Company provides the transportation of electricity through its transmission and distribution wires infrastructure. Its service area covers approximately 3,600 square miles, with a population of 72,000. The utility is regulated by the Federal Energy Regulatory Commission ("FERC") and the Maine Public Utilities Commission ("MPUC"). MPS is headquartered in Presque Isle, Maine.

MAM Utility Services Group is a wholly-owned subsidiary of MAM. MAM USG was incorporated in the State of Maine on September 27, 2007. The purpose of MAM USG is to provide utility-related services to clients on projects that MPS could not or would not be required to provide under State and Federal regulations. This includes transmission line and substation design-and-build services for generator projects outside the MPS service territory and contract work within MPS's territory that MPS is not required to provide. MAM USG focuses on areas such as transmission infrastructure to support renewable generation, utility asset maintenance contracts, and other utility-related services. In compliance with the MPUC's Rules and its Reorganization Order in Docket 2002-676, these services must be provided under a separate subsidiary. MAM USG is in the business development stage and currently has no employees.