Ameresco to Announce Second Quarter Financial Results on August 10, 2011

FRAMINGHAM, MA – July 27, 2011 – Ameresco, Inc. (NYSE:AMRC), a leading energy efficiency and renewable energy company, today announced that it will release its second quarter financial results before the market opens on Wednesday, August 10, 2011. Once announced, the earnings press release will be available on the “Investor Relations” section of www.ameresco.com. The Company will host an earnings conference call at 8:30 a.m. ET the same day.

On the call, President and Chief Executive Officer George Sakellaris and Vice President and Chief Financial Officer Andrew Spence will discuss Ameresco’s financial results as well as business outlook and strategy.

In conjunction with its quarterly earnings conference call and press release, the Company will provide management’s prepared remarks concerning quarterly results. These prepared remarks will be furnished on a Current Report on Form 8-K and also posted to the “Investor Relations” section of the Company’s website at www.ameresco.com. This process is designed to provide investors and analysts with enhanced access to financial results and non-financial metrics as well as additional insight into the Company’s performance in advance of its earnings conference call.

Participants may access the earnings conference call by dialing domestically 888.679.8034 or internationally 617.213.4847. The passcode is 44821297. Those who wish to listen only to the conference call webcast may visit the “Investor Relations” section of the Company’s website. Participants are advised to dial into the call at least ten minutes prior to the call to register.

Pre-Registration for the call is also available at:
https://www.theconferencingservice.com/prereg/key.process?key=PFYDUMVVV. Pre-registrants will be issued a pin number to use when dialing into the live call which will provide quick access to the conference by bypassing the operator upon connection.

If you are unable to listen to the live call, the webcast will be archived on the Company’s website shortly after the call and be available for one year.

About Ameresco, Inc.
Ameresco, Inc. was incorporated in Delaware in April 2000 and is a leading independent provider of comprehensive energy efficiency 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.