Ameresco States That Policy Is Not to Comment on Unusual Market Activity

FRAMINGHAM, MA – April 15, 2011 – Ameresco, Inc. (NYSE:AMRC), a leading energy efficiency and renewable energy company, today announced that, in view of the unusual market activity in its common stock, the NYSE has contacted the company in accordance with its usual practice. In response, the Company stated that it is Ameresco’s policy not to comment on unusual market activity.

About Ameresco, Inc.
Ameresco, Inc. was incorporated in Delaware in April 2000 and is a leading independent provider of comprehensive energy efficiency and renewable energy solutions for facilities throughout North America.  Ameresco’s solutions include upgrades to a facility’s energy infrastructure, and the development, construction, and operation of renewable energy plants.  With corporate headquarters located in Framingham, MA, Ameresco has 56 offices in 29 states and five Canadian provinces.  For more information, visit www.ameresco.com.