POWER OF ATORNEY

Know All Men By These Presents, that the undersigned hereby constitutes and appoints Bonnie J.
Brown, the undersigned's true and lawful attorney-in-fact to:

(1)    execute for and on behalf of the undersigned, in the undersigned's capacity as
an officer and/or director of American DG Energy Inc. (the "Company"), Forms 3, 4, 5, or
Form ID in accordance with Section 16 of the Securities Exchange Act of 1934 and the rules
thereunder ("Section 16");

(2)    do and perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Form 3, 4, 5, or Form ID complete
and execute any amendment or amendments  thereto, and timely file such form or forms with
the United Sates Securities and Exchange Commission and any stock exchange or similar
authority; and

(3)    take any other action of any type whatsoever in connection with the foregoing that,
in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or
legally required by, the undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned  pursuant to this Power of Attorney shall be in
such form and shall contain such terms and conditions as such attorney-in-fact  may approve in
such attorney-in -fact's  discretion.

The undersigned hereby grants to such attorney-in-fact full power and authority to do and
perform any and every act and thing whatsoever requisite, necessary, or proper to be done in
the exercise of any of the rights and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact,
or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done
by virtue of this power of attorney and the rights and powers herein granted. The undersigned
acknowledges that the foregoing attorney-in-fact, in serving in such capacity at the request
of the undersigned, is not assuming, nor is the Company assuming, any of the undersigned's
responsibilities to comply with Section 16.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer
required to file Forms 3, 4, 5, and Form ID with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier revoked by the undersigned
in a signed writing delivered to the foregoing attorneys-in-fact.

In WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of
this 29th day of September, 2015.

/s/ Christine Klaskin
Christine Klaskin
Member of the Board of Directors