Exhibit 23
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Consent of Independent Registered Public Accounting Firm
Telkonet, Inc.
Waukesha, Wisconsin
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-161909 and 333-175737) of Telkonet, Inc. of our report dated March 30, 2020, relating to the consolidated financial statements, which appear in this Form 10-K. Our report contains an explanatory paragraph regarding the Company's ability to continue as a going concern.
/s/ BDO USA, LLP
BDO USA, LLP
Milwaukee, WI
March 30, 2020