Exhibit 31.1


CERTIFICATION OF CHIEF EXECUTIVE
OFFICER


PURSUANT TO RULES 13A-14
AND15D-14


OF THE SECURITIES EXCHANGE ACT OF
1934





I, Charles Gassenheimer, certify
that:







1) I have reviewed this
annual report on Form 10-K
of Ener1, 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;




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
have:





a) Designed such disclosure controls and
procedures, or causedsuch
disclosure controls and procedures to bedesigned 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 duringthe
period in which this report is being prepared;





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
theregistrant’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 fiscal 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 the audit committee
of registrant’s board of directors (or persons
performing the equivalent functions):





a) All significant deficiencies and
material weaknesses in the design or operation of internal control 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
registrant’s internal control over
financial
reporting.




Date:June 23, 2009
              
              /s/ Charles
      GassenheimerBy: Charles
      Gassenheimer
              Title: Chief Executive
      Officer
              (Principal Executive Officer
      and
              Duly Authorized
      Officer)