Exhibit 99.1

FOR IMMEDIATE RELEASE
Investor Contact:
John N. Hatsopoulos
American DG Energy Inc.
781.622.1120
john.hatsopoulos@americandg.com
 
Media Contact:
Barry J. Sanders
American DG Energy Inc.
781.522.6010
barry.sanders@americandg.com
 
 American DG Energy Reports Fourth Quarter 2012 Financial Performance

Current backlog increases to 40 energy systems compared to 20 systems a year ago

WALTHAM, Mass. – March 12, 2013 – 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, reported revenues of $1,549,580 in the fourth quarter of 2012, compared to $1,469,276 for the same period in 2011, an increase of 5.5%. Total revenues were $5,645,194 in 2012, compared to $6,022,868 in 2011.
GAAP diluted loss per share (EPS) was $(0.03) in the fourth quarter of 2012, compared with $(0.04) for the same period in 2011 and GAAP diluted loss per share (EPS) was $(0.14) in 2012, compared to $(0.08) in 2011.
 
Major Highlights:
 
Operations
 
We currently operate 92 energy systems.
Our current backlog consists of 40 energy systems compared to 20 at December 31, 2011.
We reached agreements with the following properties:

Luna Park Housing Corporation in Brooklyn, New York – to provide five 100 kW Combined Heat and Power (CHP) systems and five hot water heaters for their domestic hot water.
Cumberland County Jail, Portland, Maine – to provide two 75 kW CHP systems and produce space heat, hot water and electricity within the County Jail complex.
Doral Arrowwood Hotel Conference Center, Rye Brook, New York – to provide two 450-ton chillers for their central plant cooling systems.
The John Hopkins University in Baltimore, Maryland – to provide a 75 kW CHP system to Wolman Hall student housing.
DoubleTree by Hilton Hotel, Tarrytown, New York – to provide a 30-ton chiller.
Wentworth Club, Surrey, United Kingdom – to provide two 100 kW CHP systems at the Tennis & Health Club and at the main Clubhouse.
Best Western, Cedar Court Hotel, Harrogate, United Kingdom – to provide a 100 kW CHP system to produce electricity, heating and domestic hot water; Cedar Court Grand Hotel & Spa, York, United Kingdom – to provide a 100 kW CHP system to produce electricity, heating and domestic hot water.
Roko Health Clubs, in Chiswick, Gillingham, Nottingham and Portsmouth, United Kingdom – to provide four 100 kW CHP systems to produce electricity, heating and domestic hot water.
We entered into a partnership with DONG Energy Sales (formerly Shell Gas Direct) to improve energy efficiency and reduce carbon footprint for customers using CHP solutions.

We began operations at the following properties:

DoubleTree Hotel, Tarrytown, New York – started operating a 100 kW CHP system to supply electricity, space heat and domestic hot water.
Metro YMCA, Wayne, New Jersey – started operating 450-ton chillers to supply cooling.
Cumberland County Jail, Portland, Maine – started operating two 75 kW CHP systems and produce space heat, hot water and electricity within the County Jail complex.

1

The following information was filed by American Dg Energy Inc (ADGE) on Tuesday, March 12, 2013 as an 8K 2.02 statement, which is an earnings press release pertaining to results of operations and financial condition. It may be helpful to assess the quality of management by comparing the information in the press release to the information in the accompanying 10-K Annual Report statement of earnings and operation as management may choose to highlight particular information in the press release.

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