American DG Energy to Oversee Complete Energy Plant Conversion

        American DG Energy to Oversee Complete Energy Plant Conversion

PR Newswire

WALTHAM, Mass., Jan. 23, 2014

WALTHAM, Mass., Jan. 23, 2014 /PRNewswire/ --American DG Energy Inc. (NYSE
MKT: ADGE), a leading On‑Site Utility, offering clean electricity, heat, hot
water and cooling solutions to hospitality, healthcare, housing and athletic
facilities, today announced that it has reached agreements with Sunstone Hotel
Investors Inc. to manage an energy plant conversion, along with installation
and maintenance of a combined heat and power (CHP) system at the DoubleTree
Suites by Hilton New York City – Times Square. The agreements should provide
American DG Energy with approximately $1,300,000 in revenue in 2014.

Having completed a feasibility study for the property, American DG Energy was
selected to oversee a complete energy plant conversion to reduce the
property's dependency on utility steam and electricity and convert to a
natural gas-based energy system. The conversion project will include five (5)
2 MMBTU boilers, two (2) 500-ton chillers and a 200 kW CHP system.Upon
completion, the DoubleTree Suites by Hilton New York City – Times Square is
expected to achieve significant energy cost savings, reduce their carbon
footprint by 2,208 tons annually, and generate attractive return on
incremental invested capital.

"The DoubleTree Guest Suites Times Square is a popular, high occupancy hotel
that delivers a truly rewarding experience to each guest," stated W. Guy
Lindsey, Senior VP Design & Construction of Sunstone Hotel Investors. "We
were seeking to further improve guest comfort, lower property operating costs
and enhance the hotel environmental profile. American DG Energy is providing
the technology and management to accomplish this from feasibility and
engineering to installation and operations of new efficient energy systems."

Sunstone Hotel Investors Inc. is a hotel investment company with interests in
29 hotels with 13,740 rooms and an enterprise value of approximately $3.8
billion. DoubleTree Suites is the only all-suite hotel on Broadway in the
heart of Times Square with 460 two-room suites.

On-Site Utility
American DG Energy sells the energy produced from an onsite energy system to
an individual property as an alternative to the outright sale of energy
equipment. On-Site Utility customers only pay for the energy produced by the
system and receive a guaranteed discount rate on the price of the energy. All
system capital, installation and operating expenses are paid by American DG

About American DG Energy
American DG Energy supplies low-cost energy to its customers through
distributed power generating systems. The Company is committed to providing
institutional, commercial and small industrial facilities with clean, reliable
power, cooling, heat and hot water at lower costs than charged by local
utilities – without any capital or start-up costs to the energy user – through
its On-Site Utility energy solutions. American DG Energy is headquartered in
Waltham, Massachusetts. Learn more about how American DG Energy (NYSE MKT:
ADGE) reduces energy costs at or follow us on Facebook and

This press release contains forward-looking statements under the Private
Securities Litigation Reform Act of 1995 that involve a number of risks and
uncertainties. Important factors could cause actual results to differ
materially from those indicated by such forward-looking statements, as
disclosed on the Company's website and in Securities and Exchange Commission
filings. This press release does not constitute an offer to buy or sell
securities by the Company, its subsidiaries or any associated party and is
meant purely for informational purposes. The statements in this press release
are made as of the date of this press release, even if subsequently made
available by the Company on its website or otherwise. The Company does not
assume any obligation to update the forward-looking statements provided to
reflect events that occur or circumstances that exist after the date on which
they were made.

SOURCE American DG Energy Inc.

Contact: Investor Contact: Jesse T. Herrick, American DG Energy Inc.,
781.522.6020,; Media Contact: Barry J. Sanders,
American DG Energy Inc., 781.522.6010,
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