Braintree Electric Light Department (BELD) supplies electric service to the township of Braintree, Massachusetts. BELD was founded in 1892 by Thomas Watson and is one of the oldest departments in the country.

Energy and Resource Solutions, Inc. (ERS) is a thought leader in energy consulting with an established reputation for innovative project development and energy assessment work for commercial and industrial energy efficiency. Since 1995, they have been providing services in energy program design, outreach, implementation, evaluation, and incentive management as well as custom energy audits and sustainable building development.

Florence Electric is an electrical contracting company that services many of the region’s Fortune 500 companies, building management companies, and specialty general contractors.

Sensata Technologies is a supplier of sensing, electrical protection, control, and power management solutions with operations and business centers in 13 countries. Sensata's products improve safety, efficiency, and comfort for millions of people every day in automotive, appliance, aircraft, industrial, military, heavy vehicle, heating, air-conditioning and ventilation, data, telecommunications, vehicle, and marine applications.

ThermoCeramix is an engineering company that specializes in the development of heating solutions for industrial, commercial and consumer applications. ThermoCeramix has developed a patented, breakthrough film-heater technology. The company is headquartered in Toronto with research and development facilities in Montreal, Canada.