Location: Framingham (headquarters)
What it does:
Sector: Energy Efficiency and Renewable Energy
Went public: 2010
Employees: More than 750 across 34 states and five Canadian provinces (100 in Mass.)
Revenue/investment: 2010 revenue: $618.2 million
Ameresco, Inc. (NYSE: AMRC) is a leading independent provider of comprehensive energy efficiency and renewable energy solutions for facilities throughout North America. Amerescos solutions include upgrades to a facilitys energy infrastructure, and the development, construction, and operation of renewable energy plants.