Tecogen Sells Two Additional Efficient Natural Gas Chillers to Major New York University

Tecogen((R)) Inc. today announced the sale of two STx Series TECOCHILL((R)) natural gas-powered chillers to a major university located in the Bronx, New York.

The new chillers will provide 400 tons of cooling capacity to one of the University’s libraries commensurate to 240 kW of reduction in peak electric usage if a conventional, electric system had been specified. The university currently operates two similar TECOCHILL models, commissioned in 2009, that provide air-conditioning to dormitories.

“Commercial and institutional facilities located in many major US cities pay dearly for summer electricity,” said Robert Panora, President and COO of Tecogen. “Consolidated Edison customers in New York City are at the high end of the spectrum, but they are by no means unique. Tecogen natural gas powered chillers eliminate the portion of the electricity usage associated with the facility’s air-conditioning load and replace it with low-cost summer natural gas. Similarly, secondary, punitive charges relating to monthly peak demand are proportionately reduced. All in all, the savings are dramatic.”

The sale to the University also includes a long-term maintenance contract.

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