Dallas Water Utilities and Ameresco to Provide Tour of Biogas Facility; the New Energy Recovery Facility Will Save Money and Reduce Emissions

Ameresco, Inc. (NYSE:AMRC)

What:
        Dallas Water Utilities' (DWU) staff members and Ameresco management will
        provide a tour of the City's new 4.3 MW biogas capture and refining
        facility, which generates electricity and thermal load to power DWU's
        facilities. The tour will include a look at the Digester Complex to show
        how methane is generated, followed by the Cogeneration Facility to
        demonstrate how methane is converted into electricity.


        The energy recovery facility is expected to offset approximately 60
        percent of the electricity that the DWU currently pulls from the grid.
        This is expected to save the City approximately $1.5 million dollars
        annually. Ameresco was chosen by Dallas to design, build and operate the
        plant, which is expected to reduce carbon dioxide emissions by 19,150
        metric tons annually.

Who:    - Cesar Baptista, Assistant Director, Capital Improvements Program

        - Chris Kaakaty, Assistant Director, Wastewater Operations

        - Richard Wagner, Senior Program Manager, Wastewater Facilities Project
        Management

        - Jesse White, Senior Program Manager, Southside Wastewater Treatment
        Plant

        - Mark Evers, Operations Manager, Southside Wastewater Treatment Plant

        - Tom Foster, Solids Supervisor, Southside Wastewater Treatment Plant

        - James Bier, Senior Project Developer, Ameresco

        - Robert Bell, Senior Project Manager, Ameresco

        - Jacob Quarles, Cogeneration Facility Operator, Ameresco

When:   10 a.m. Tuesday, April 19

Where:  City of Dallas Water Utilities, 10011 Log Cabin Road

About Ameresco, Inc. Ameresco, Inc. (NYSE:AMRC) 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.

    Source: Ameresco

Released April 15, 2011