Ameresco, Inc. (Ameresco) is a provider of a range of energy services, including energy efficiency, infrastructure upgrades, energy security and resilience, asset sustainability and renewable energy solutions for businesses and organizations throughout North America and Europe. Ameresco's sustainability services include capital and operational upgrades to a facility's energy infrastructure and the development, construction, ownership and operation of renewable energy plants. Its segments include U.S. Regions, U.S. Federal, Canada, Small-Scale Infrastructure and All Other. Its U.S. Regions, U.S. Federal and Canada segments offer energy efficiency products and services. Its Small-Scale Infrastructure segment sells electricity, processed renewable gas fuel, heat or cooling, produced from renewable sources of energy and generated by small-scale plants that it owns. The All Other segment offers enterprise energy management services, consulting services and integrated-photovoltaic (PV).