List of utilities in Massachusetts

• NSTAR
• National Grid
• Unitil
• Western Massachusetts Electric Company
• Ashburnham Municipal Light Plant
• Hudson Municipal Electric Dept
• Belmont Municipal Light Department
• Boylston Municipal Light Department
• Braintree Electric Light Department
• Chester Municipal Electric Light Department
• Chicopee Municipal Lighting Plant
• Concord Municipal Light Plant
• Danvers Electric Division
• Georgetown Municipal Light Department
• Groton Electric Light Department
• Groveland Municipal Light Department
• Hingham Municipal Light Plant
• Holden Municipal Light Department
• Holyoke Gas & Electric Department
• Hudson Light and Power
• Hull Municipal Lighting Plant
• Ipswich Municipal Light Department
• Littleton Electric Light & Water Department
• Mansfield Municipal Electric Department
• Marblehead Municipal Light Department
• Mass Development/Devens Utility
• Mendon Board of Public Affairs
• Merrimac Municipal Light Department
• Middleborough Gas & Electric Department
• Middleton Municipal Light Department
• North Attleborough Electric Department
• Norwood Municipal Light Department
• Paxton Municipal Light Department
• Peabody Municipal Light Plant
• Princeton Municipal Light Department
• Reading Municipal Light Department
• Rowley Municipal Lighting Plant
• Russell Municipal Lighting Company
• Shrewsbury's Electric Light Plant
• South Hadley Electric Light Department
• Sterling Municipal Light Department
• Taunton Municipal Lighting Plant
• Templeton Municipal Lighting Plant
• Wakefield Municipal Light Department
• Wellesley Municipal Light Plant
• West Boylston Municipal Lighting Plant
• Westfield Gas and Electric Light Department