CORRECTING and REPLACING Ameresco’s Woodland Meadows Landfill State-of-the-Art Gas to Energy Facility Now Open

High BTU Project was one of the largest of its kind, unique both
technically and commercially, and required to meet unprecedented natural
gas quality specifications.

FRAMINGHAM, Mass. & WAYNE, Mich.–(BUSINESS WIRE)–#Biogas–Please replace the release with the following corrected version due to
multiple revisions.

The corrected release reads:

AMERESCO’S WOODLAND MEADOWS LANDFILL STATE-OF-THE-ART GAS TO ENERGY
FACILITY NOW OPEN

High BTU Project was one of the largest of its kind, unique both
technically and commercially, and required to meet unprecedented natural
gas quality specifications.

Ameresco, Inc. (NYSE:AMRC), a leading energy
efficiency and renewable
energy company, today announced that the landfill gas to renewable
natural gas facility at Waste Management’s, Woodland Meadows Landfill
has achieved EPA approval and is now in operation.

Ameresco designed, built, owns and operates the biogas-to-renewable
natural gas (RNG) facility that converts approximately 6,600 SCFM of
landfill gas to approximately 3,500 dekatherms of RNG every day. The
state-of-the-art facility was commissioned in November 2017.

“The project, one of the largest of its kind in the US, is unique both
technically and commercially,” said Michael T. Bakas, Executive Vice
President of Ameresco. “We are very proud of the focus and hard work our
staff invested to bring this renewable energy project to fruition.
Working with Waste Management and GAIN Clean Fuel to develop this
facility has been a very rewarding experience. We look forward to a
long-term partnership on this flagship project with these two incredible
organizations.”

“Waste Management is proud to partner with Ameresco to recover valuable
resources and create clean, renewable energy from the landfill,” said
John Myers, Director, Operations, Waste Management. “It is gratifying to
be involved in using disposed materials and transitioning them into
tremendous environmental benefits.”

The renewable natural gas facility operates continuously. Blower
stations draw the gas from the raw landfill gas to produce
pipeline-quality gas for distribution in the local gas distribution
system. Gas is then injected into the natural gas pipeline, where it is
eventually utilized in the vehicle fuel market.

GAIN Clean Fuel, in partnership with Ameresco, takes ownership of the
RNG upon delivery to the natural gas distribution system and transports
it for use within the transportation sector.

“RNG is one of the few alternative fuels that creates air quality
improvements during the fuel production process and when used for actual
transportation,” said Bryan Nudelbacher, Director of Business
Development, GAIN Clean Fuel. “This truly positions companies using
renewable natural gas for sustainability success.”

Traditionally, landfill gas is flared onsite, but current technologies
allow for the harnessing of this gas and its conversion into a cleaner
renewable transportation fuel.

About Waste Management
Waste Management, based in Houston,
Texas, is the leading provider of comprehensive waste management
environmental services in North America. Through its subsidiaries, the
Company provides collection, transfer, disposal services, and recycling
and resource recovery. It is also a leading developer, operator and
owner of landfill gas-to-energy facilities in the United States. The
Company’s customers include residential, commercial, industrial, and
municipal customers throughout North America. To learn more information
about Waste Management, visit www.wm.com
or www.thinkgreen.com.

About U.S. Gain
U.S. Gain, a division of U.S. Venture, Inc.,
is a leading supplier of renewable (RNG) and compressed (CNG) natural
gas—environmentally-friendly and cost-effective alternatives to diesel.
GAIN Clean Fuel stations strategically located throughout the United
States and Canada feature easy-access for all-natural gas vehicles, 99%
site uptime, fast-fill capabilities and premium fuel quality.

About U.S. Venture
For more than 65 years, U.S. Venture,
Inc. has been recognized as an innovative leader in the distribution of
petroleum and renewable energy products, lubricants, and tires and parts
for the automotive aftermarket. Guided by its company vision, “To be the
very best value-adding distributor of products that vehicles consume in
North America,” they deliver unconventional, creative solutions that
give their customers a competitive edge. Headquartered in Appleton,
Wisconsin, the company’s business divisions are U.S. Oil, U.S.
AutoForce®, U.S. Lubricants and U.S. Gain.

About Ameresco, Inc.
Founded in 2000, Ameresco, Inc.
(NYSE:AMRC) is a leading independent provider of comprehensive services,
energy efficiency, infrastructure upgrades, asset sustainability and
renewable energy solutions for businesses and organizations throughout
North America and Europe. Ameresco’s sustainability services include
upgrades to a facility’s energy infrastructure and the development,
construction and operation of renewable energy plants. Ameresco has
successfully completed energy saving, environmentally responsible
projects with Federal, state and local governments, healthcare and
educational institutions, housing authorities, and commercial and
industrial customers. With its corporate headquarters in Framingham, MA,
Ameresco has more than 1,000 employees providing local expertise in the
United States, Canada, and the United Kingdom. For more information,
visit www.ameresco.com.

The announcement of our entry into a renewable natural gas purchase
and sale agreement is not necessarily indicative of the timing or amount
of revenue from such contract, of the company’s overall revenue for any
particular period or of trends in the company’s overall total assets in
development and operation. This project was reported in assets in
development as of December 31, 2017.

Contacts

Ameresco:
CarolAnn Hibbard, 508-661-2264
[email protected]
or
U.S.
Venture, Inc.:
Alison Mayer, 920-915-4389
[email protected]
or
GAIN
Clean Fuel:
Stephanie Lowney, 920-730-7134
[email protected]
or
Waste
Management:
Tanisha A. Sanders, 248-596-3519
[email protected]