Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
As independent registered public accountants, we hereby consent to the incorporation by reference in this Registration Statement on Form S-3/A of our report dated March 26, 2012, relating to the consolidated financial statements of American DG Energy Inc. which appear in the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 and to the reference to us under the heading “Experts” in the prospectus which is part of this Registration Statement.
/s/ MCGLADREY, LLP
McGladrey, LLP
Boston, Massachusetts
Date: May 11, 2012