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With more than 20 years of manufacturing experience, Mr. Garrison will contribute to the continued expansion of the operations. He also has experience in due diligence and managing merger and acquisition transactions. “Tecogen is a company that is poised for rapid growth, and will need to expand our financial, administrative, and risk management functions,” said Mr. Garrison.

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Most recently, Mr. Garrison served as Chief Financial Officer of Arrhythmia Research Technology, Inc., a NYSE-listed contract medical device manufacturer focusing on products related to cardiology and orthopedics. During his tenure, Mr. Garrison led the finance team through multiple acquisitions, while tripling the size of the company. Other experience includes leading the finance department in a consumer products company and construction experience in an environmental services company. Mr. Garrison holds an MBA from Boston University’s School of Management and a BS in Finance from Miami University.

Bonnie J. Brown will continue to be an advisor to Company. “Bonnie has been a dedicated and valuable member of our team for many years,” said Mr. Panora.

About Tecogen

Tecogen manufactures, installs, and maintains high efficiency, ultra-clean combined heat and power products including natural gas engine-driven cogeneration, air conditioning systems, and high-efficiency water heaters for industrial and commercial use. Tecogen has shipped more than 2,000 units, supported by an established network of engineering, sales, and service personnel across the United States. For more information, please visit www.tecogen.com.

Tecogen Media Contact Information: David Garrison P: 781-466-6403 E: David.Garrison@Tecogen.com

Tecogen Investor Contact Information: John N. Hatsopoulos P: 781-622-1120 E: jhatsopoulos@tecogen.com

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Photo: http://photos.prnewswire.com/prnh/20130409/NE91281LOGOTecogen Inc.

Web site: http://www.tecogen.com/

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