**Exhibit
      31.1**




I,
      John
      A. Moore, the Chief Executive Officer of Acorn Energy, Inc., certify that:




1.  I
      have
      reviewed this report on Form 10-Q of Acorn Energy, Inc.;




2.  Based
      on
      my knowledge, this report does not contain any untrue statement of a material
      fact or omit to state a material fact necessary to make the statements made,
      in
      light of the circumstances under which such statements were made, not misleading
      with respect to the period covered by this report;




3.  Based
      on
      my knowledge, the financial statements, and other financial information included
      in this report, fairly present in all material respects the financial condition,
      results of operations and cash flows of the registrant as of, and for, the
      periods presented in this report;




4.  The
      registrant's other certifying officer and I are responsible for establishing
      and
      maintaining disclosure controls and procedures (as defined in Exchange Act
      Rules 13a-15(e) and 15d-15(e)) and internal control over financial
      reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the
      registrant and we have:




|(a) | Designed
              such disclosure controls and procedures, or caused such disclosure
              controls and procedures to be designed under our supervision, to ensure
              that material information relating to the registrant, including its
              consolidated subsidiaries, is made known to us by others within those
              entities, particularly during the period in which this report is beingprepared;
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | Designed
              such internal control over financial reporting, or caused such internal
              control over financial reporting to be designed under our supervision,
              to
              provide reasonable assurance regarding the reliability of financial
              reporting and the preparation of financial statements for external
              purposes in accordance with generally accepted accounting principles;
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Evaluated
              the effectiveness of the registrant's disclosure controls and procedures
              and presented in this report our conclusions about the effectiveness
              of
              the disclosure controls and procedures, as of the end of the period
              covered by this report based on such evaluation;
              and
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(d) | Disclosed
              in this report any change in the registrant’s internal control over
              financial reporting that occurred during the registrant’s most recent
              fiscal quarter (the registrant’s fourth quarter in the case of an annual
              report) that has materially affected, or is reasonably likely to
              materially affect, the registrant’s internal control over financial
              reporting; and
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



5.  The
      registrant's other certifying officer and I have disclosed, based on our most
      recent evaluation of internal control over financial reporting, to the
      registrant's auditors and to the audit committee of the registrant's board
      of
      directors (or persons performing the equivalent function):


(a)
            All
                significant deficiencies and material weaknesses in the design or
                operation of internal controls over financial reporting which are
                reasonably likely to adversely affect the registrant's ability to
                record,
                process, summarize and report financial information;
                and


|(b) | Any
              fraud, whether or not material, that involves management or other
              employees who have a significant role in the registrant's internal
              control
              over financial reporting.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Dated:
      August 14, 2008




By: \ **s** \
      John
      A. Moore


John
      A.
      Moore


Chief
      Executive Officer