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CONFIDENTIAL PORTIONS HAVE BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT AND HAVE BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION (THE
AMERICAN DG ENERGY INC.
FACILITIES, SUPPORT SERVICES AND BUSINESS AGREEMENT
January 1, 2006
THIS FACILITIES AND SUPPORT SERVICES AGREEMENT is effective as of January 1, 2006 between Tecogen Inc., a
Delaware corporation (" Tecogen "), and American DG Energy Inc., a Delaware corporation (" ADG Energy ").
NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged,
the parties hereby agree as follows:
1. Office and Infrastructure
Tecogen will provide to ADG Energy the following office and infrastructure support services for a period from the date of
this Agreement through the Termination Date (as such term is defined in Section 2 below):
(a) Office Space. Approximately 540 allocated square feet of space in Tecogen's offices located at 45 First Avenue,
Waltham, Massachusetts 02451 (the " Building "), which shall include three (3) offices and a shared conference room. Tecogen
will also provide ADG Energy with water, sewer, electrical, phones and other utility services, heating, ventilation and air-
conditioning, and cleaning and janitorial services. Tecogen may change the space in the Building occupied by ADG Energy
from time to time during the term of this Agreement. Tecogen will provide such space and services at a flat rate of $716.00 per
month. If additional space is provided, this flat fee will increase at an annual rate of $15.91 per square foot for the additional
space. Copy machine usage, office supplies, postage and shipping, secretarial & receptionist services, Internet service,
telephone support and IT support are not included in the monthly rate and will be billed separately.
(b) Personnel Support