OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
consent to incorporation by reference in the Registration Statements
(Registration No. 333-142986, 333-148731, 333-114425, 333-129950,
333-137703, 333-141069, 333-138001, 333-152051) on Form S-3 of Telkonet, Inc.
and its subsidiaries of our reports dated March 31, 2010, with respect to
the consolidated balance sheets of Telkonet, Inc. and its subsidiaries as
of December 31, 2009 and 2008, and the related consolidated statements of
losses, stockholders' equity, and cash flows for the two years ended December
31, 2009, which reports appear in the December 31, 2009 annual report on Form
10-K of Telkonet, Inc. and its subsidiaries.