Consent of Kesselman & Kesselman CPA

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 33-99196, 33-94974, 333-65799, 333-36159, 333-82418, 333-82416, 333-140539, 333-158287 and 333-169438) and the Registration statements on Form S-3 (Nos. 333-143421, 333-161315, 333-165356 and 333-169434) of Acorn Energy, Inc. of our reports dated March 22, 2010, except for Note 5(b) which is as of March 16, 2011 and Notes 3(b) and 18(g) which are as of March 15, 2012, relating to the financial statements, which appear in this Form 10-K.