Ameresco, Inc. is an independent, integrated, comprehensive energy efficiency and renewable energy company that is building a sustainable future with public organizations and private enterprise throughout North America and the United Kingdom.

Backer Hotwatt manufactures cartridge, crankcase, air process, immersion, strip and finned strip, tubular and finned tubular, band, foil, flexible glasrope and ceramic heaters for a wide variety of OEM and industrial applications.

Hurley & David provides residential HVAC Services and residential plumbing services. Since 1960, the business has been servicing Eastern MA and northern CT. They provide a wide range of plumbing services from air conditioning, furnace, boiler, or HVAC system installation, maintenance, and repair.

MKS Instruments, Inc is a pioneer in technology solutions for the markets they serve. They make the instruments, subsystems and process control solutions that enable their customers to measure, control, power, monitor and analyze the critical parameters of the advanced processes that they manage.