National Grid - Massachusetts Electric and Nantucket Electric – National Grid serves over 1.2 million electricity customers in 168 communities throughout Massachusetts including Brockton, Worchester, Franklin, Marlborough, Southbridge, Newbury Port, North Adams and many surrounding counties. In addition, National Grid as a whole operates over 9,000 miles of transmission and delivers electricity and natural gas to areas throughout the Northeast including Massachusetts, New Hampshire, New York, Rhode Island and Vermont. National Grid USA is headquartered in Waltham, Massachusetts.
National Grid (Nantucket Electric) – This utility provides service to over 13,000 customers on Nantucket Island.
Eversource (formerly NSTAR)Formerly Northeast Utilities, Eversource Energy is New England’s largest utility company, delivering energy to 3.6 million customers across Massachusetts, Connecticut and New Hampshire. Eversource (formerly NSTAR) covers more than 1 million residents including Boston and 81 surrounding communities such as Barnstable, Plymouth, New Bedford and Edgartown.
Eversource (formerly Western Massachusetts Electric WMECo) – Western Massachusetts Electric Co. provides power to over 210,000 customers in Western Massachusetts including the counties of Berkshire, Franklin, Hampden, and Hampshire.
Unitil - Unitil’s operating utilities serve approximately 100,500 electric customers and 70,000, natural gas customers in Maine, Massachusetts and New Hampshire.