Green Energy Solutions With Guaranteed Savings

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Company Highlights

» Established 2001• www.americandg.com

» Public in 2007- ADGE.OTC• Grew by over 80% in 2007• Revenues + 76% from 2006-2008

» Business• On-Site Utility Energy• Turnkey Installation• Equipment Sales

AWARD WINNER

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Our History

1956Thermo Electron Founded

2008Recognized by EPA

and Energy Star

2001American DG Energy Founded

2007American DG Energy Went Public

1983Tecogen Founded

NYSE:TMO OTC:ADGE

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Tecogen Inc.

» Market Leader

» Over 2,000 units shipped

» Over 65 Million Hours

» Fully Compliant and Certified

» 75 kW and 100kW• Multiple Units Installations• Demand Response

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Tecogen Locations USA

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On-Site Utility

» Supply Low Cost Energy • Electricity• Heat• Hot Water• Cooling

» Supply Energy as an Alternative to Purchasing Energy Equipment

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No Cost, No Responsibility

» We Own & Pay for Energy Systems• Equipment and Installation

- CHP or Cogeneration- Chillers- Boilers- Alternative Energy Systems

» We Pay for Operations Costs• 100% Our Responsibility

- Maintenance & Service- Full Operations- Fuel- Financing

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No Risk

» You Only Pay for Energy We Supply» Energy Price is Discounted Below Your Utility Rates

• Discount Guaranteed for the Life of Contract

» Energy Supplied is Metered On Site• Electricity (kWh & kW)• Heat, Hot Water & Chilled Water (Therms)

» Fully Monitored 24/7» Term: 15 Years» You May Purchase Equipment at Anytime

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The Benefits

» Capital Untouched• No Investment or Budget Required• No Financing Required• Off Balance Sheet

» Your Cash Flow is Improved• Begin Saving Money on Day 1• Immediate Increase in Facility Net Income

» One Stop Shopping• No Operating Responsibility or Overhead

- No Installation or Maintenance Risks• No Utility Regulatory Responsibility

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Energy Systems

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Installations: Outdoors

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Facilities

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More Facilities

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Go Green While $aving Green

» Cogeneration Reduces CO2 by 607 tons/year * • EPA CHP partner• DOE EPA Energy Star efficiency award winner

» Equivalent to:

*For a typical installation of: 150 kW 6000 Hrs / year

166 acres 104 cars

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How Do We Save Carbon?

EFFICIENCY

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Jerry GoldfadenRegional Manager

41Belmont DriveLivingston, NJ 07039

p: 973.740.8630f: 973.740.0842

Jerry.goldfaden@americandg.com

No Cost | No Responsibility | No Risk Just Savings

American DG EnergyHeadquarters

45 First AvenueWaltham, MA 02451

p: 781.522.6000f: 781.522.6050

www.americandg.com

Contact Information