Ameresco, Inc. engages in the provision of energy services, including energy efficiency, infrastructure upgrades, asset sustainability, and renewable energy solutions for businesses and organizations throughout North America and Europe. The company is headquartered in Framingham, Massachusetts and currently employs 1,363 full-time employees. The company went IPO on 2010-07-22. The Company’s comprehensive portfolio includes energy efficiency, infrastructure upgrades, asset sustainability, and renewable energy solutions. The Company’s segments include U.S. Regions, U.S. Federal, Canada, Alternative Fuels and All Other. The Company’s U.S. Regions, U.S. Federal and Canada segments offers energy efficiency products and services, which include the design, engineering, and installation of equipment and other measures. Its Alternative Fuels segment sells electricity and processed renewable natural gas (RNG) derived from biomethane from small-scale plants that it owns and operates and provides operations and maintenance (O&M) services for customer-owned small-scale RNG plants. The All Other category offers enterprise energy management services, consulting services, energy efficiency products and services outside of the United States and Canada.