THE SECURITIES TO WHICH THIS AGREEMENT RELATES HAVE NOT BEEN
          REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS  AMENDED
          ("SECURITIES  ACT"),  OR UNDER  ANY  STATE  SECURITIES  LAWS
          ("BLUE SKY  LAWS"),  AND MAY NOT BE OFFERED OR SOLD  WITHOUT
          REGISTRATION  UNDER THE  SECURITIES  ACT, AND AS REQUIRED BY
          BLUE SKY  LAWS IN  EFFECT  AS TO SUCH  TRANSFER,  UNLESS  AN
          EXEMPTION FROM SUCH REGISTRATION UNDER STATE AND FEDERAL LAW
          IS AVAILABLE.

                       STOCK PURCHASE AGREEMENT

          THIS STOCK PURCHASE  AGREEMENT is dated effective as of 18th of March,
     2003, by and between Enova  Systems,  Inc., a California  corporation  (the
     "Corporation") and Hyundai Heavy Industries Co., Ltd., (the "Investor").

                                 R E C I T A L S

          A. The  Investor  desires to purchase  from the  Corporation,  and the
     Corporation desires to sell to the Investor,  Common Stock on the terms and
     conditions  hereinafter  set forth pursuant to the Joint Venture  Agreement
     (the "JVA") to which this Stock Purchase Agreement is attached as Exhibit A
     thereto.

                                A G R E E M E N T

          NOW, THEREFORE, in consideration of the mutual agreements,  covenants,
     representations  and warranties  contained in this  Agreement,  the parties
     hereby agree as follows:

     1. Issuance of Securities, Payment and Delivery.

          a. Sale of  Securities.  Subject to the terms and  conditions  of this
     Agreement,  the Investor  agrees to purchase and the Company agrees to sell
     and issue to the Investor the Shares of the Company  which is equivalent to
     US Three  Million  Dollars (USD  3,000,000)  in aggregate  divided into two
     separate  purchases  on an equal  basis as set forth on  Schedule  1 to the
     signature page attached hereto.

          b. First Purchase.  As for the first purchase,  the Investor agrees to
     purchase on the date of  incorporation  of the Joint  Venture  Company,  as
     specified in the JVA,  (the "First  Closing")  that number of shares of the
     Corporation's  Common Stock set forth on Schedule 1 (the "Shares" or "First
     Purchase  Shares") at $0.065 per share for an aggregate  purchase of US One
     Million Five Hundred Thousand Dollars  (1,500,000) as set forth on Schedule
     1.

          c. Second  Purchase.  One year after the first  purchase  (the "Second
     Closing"),  the  Investor  agrees to purchase  that number of shares of the
     Corporation's Common Stock set forth on Schedule 1 (the "Shares" or "Second
     Purchase Shares") at the per share price which is equivalent to the average
     daily volume  weighted  closing price of NASDAQ OTC (or  successor  trading
     market  such as the BBX if  applicable)  market  share  price for three (3)
     months before the second purchase date for an aggregate  purchase of US One
     Million Five Hundred Thousand Dollars  (1,500,000) as set forth on Schedule
     1.

          d. Payment and Delivery.  For the first  purchase,  the Investor shall
     purchase the Shares by making payment of US Five Hundred  Thousand  Dollars
     (USD 500,000) to Enova  Systems,  Inc. in cash,  by cashiers  check or wire
     transfer of funds, in immediately available U.S. Dollars funds at the First
     Closing  and by making  payment to JVC on behalf of ENOVA,  US One  Million
     Dollars (USD 1,000,000) for ENOVA's  subscription  obligations as set forth
     in the JVA.  The second  purchase  shall  occur in the same manner one year
     after the first purchase.

     2. Deliveries at Closing. At the Closing or thereafter as indicated:

          a. The  Corporation  and the Investor  will at the Closing  deliver an
     executed counterpart of




     this Stock Purchase Agreement;

          b. The  Investor  will  provide the  Corporation  at the Closing  with
     payment  in  immediately  available  funds of the  aggregate  amount of the
     Purchase Price;

          c. The  Corporation  will  deliver at the Closing a share  certificate
     evidencing the Shares in the name of the Investor;

          d. The  Corporation  will deliver an officer's  certificate  providing
     that its  representations  and  warranties  contained in this Agreement are
     true and correct as of the Closing;

          e.  The  Investor  will  deliver  a  certificate  providing  that  its
     representations  and  warranties  contained in this  Agreement are true and
     correct as of the Closing; and

          f. The Corporation  will deliver a copy of its most recently  prepared
     audited financial statements as well as unaudited financial statements (the
     "Financial Statements").

     3.  Corporation's  Representations  and Warranties.  The Corporation hereby
     represents and warrants to the Investor that as of the Closing:

          a.  Corporate   Organization  and  Standing.   The  Corporation  is  a
     corporation duly organized, validly existing and in good standing under the
     laws  of the  State  of  California.  The  Corporation  has  the  requisite
     corporate  power to carry on its  business as presently  conducted,  and as
     proposed or contemplated  to be conducted in the future,  and to enter into
     and  carry  out the  provisions  of  this  Agreement  and the  transactions
     contemplated under this Agreement.

          b. Authorization. All corporate action on the part of the Corporation,
     its directors and shareholders necessary for the authorization,  execution,
     delivery  and  performance  of this  Agreement by the  Corporation  and the
     performance  of all of the  Corporation's  obligations  hereunder  has been
     taken.  This  Agreement,  when executed and  delivered by the  Corporation,
     shall  constitute  a  valid  and  binding  obligation  of the  Corporation,
     enforceable  in  accordance  with its  terms,  except as may be  limited by
     principles  of public  policy,  and subject to laws of general  application
     relating to  bankruptcy,  insolvency and the relief of debtors and rules of
     law governing  specific  performance,  injunctive relief or other equitable
     remedies. The Shares, when issued in compliance with the provisions of this
     Agreement, will be validly issued, fully paid and non-assessable.

          c. No Breach. The issue and sale of the Shares by the Corporation does
     not and will not conflict with and does not and will not result in a breach
     of any of the terms of the  Corporation's  incorporating  documents  or any
     agreement  or  instrument  to  which  the  Corporation  is  a  party.   The
     consummation  of  the   transactions  or  performance  of  the  obligations
     contemplated  by this Agreement will not result in a breach of any term of,
     or constitute a default under, any statute,  indenture,  mortgage, or other
     agreement or instrument to which the Corporation or any of its subsidiaries
     is or are a party or by which any of them is or are bound.

          d. Pending or Threatened  Claims.  Neither the  Corporation nor any of
     its  subsidiaries is a party to any action,  suit or proceeding which could
     materially affect its business or financial condition, and no such actions,
     suits or proceedings are contemplated or have been threatened.

          e.  No  Preemptive  Rights.  There  are no  preemptive  rights  of any
     shareholder of the Corporation with respect to the Shares.

     4. Investor  Representations  and Warranties.  The Investor  represents and
     warrants to the Corporation that:

          a. Account.  The Investor is acquiring the Shares for  investment  for
     its own account,  and not with a view to, or for resale in connection with,
     any  distribution  thereof,  and it has no present  intention of selling or
     distributing  any of the Shares.  The Investor  understands that the Shares
     have not been registered




under the Securities Act of 1933, as amended (the "Securities Act") by reason of
a specific  exemption  from the  registration  provisions of the  Securities Act
which depends upon,  among other things,  the bona fide nature of the investment
as expressed herein.

          b. Access to Data.  The Investor has had an opportunity to discuss the
     Corporation's   business,   management  and  financial   affairs  with  its
     management and to obtain any additional  information which the Investor has
     deemed necessary or appropriate for deciding whether or not to purchase the
     Securities,  and has had an opportunity  to receive,  review and understand
     the  disclosures  and  information  regarding the  Corporation's  financial
     statements,  capitalization and other business  information as set forth in
     Corporation's filings with the Securities and Exchange Commission (the "SEC
     Filings") which are all incorporated herein by reference, together with all
     exhibits  referenced  therein.  Investor  understands  that  the  Financial
     Statements and any other information obtained from the Corporation that has
     not been disclosed in the  Corporation's  SEC Filings are  confidential and
     may not be  disclosed  to any  third  party  or used  by the  Investor  for
     purposes of trading in the  Corporation's  publicly traded stock until such
     information  is  publicly   released  by  the  Corporation.   The  Investor
     acknowledges that no other representations or warranties,  oral or written,
     have been made by the  Corporation or any agent thereof except as set forth
     in this Agreement.

          c. No Fairness  Determination.  The Investor is aware that no federal,
     state or other  agency  has made any  finding  or  determination  as to the
     fairness of the investment,  nor made any  recommendation or endorsement of
     the Shares.

          d.  Limited  Public  Market.  The  Investor  is  aware  that  there is
     currently  a  very  limited   "over-the-counter"   public  market  for  the
     Corporation's  registered  securities  and  that the  Corporation  became a
     "reporting  issuer" under the Securities  Exchange Act of 1934, as amended,
     on January 27, 1995. There is no guarantee that a more  established  public
     market will  develop at any time in the future.  The  Investor  understands
     that the Shares are all  unregistered and may not presently be sold in even
     this limited public market. The Investor understands that the Shares cannot
     be readily sold or  liquidated  in case of an emergency or other  financial
     need.  The  Investor has  sufficient  liquid  assets  available so that the
     purchase  and  holding  of the  Shares  will not  cause it undue  financial
     difficulties.

          e.  Authority.  If Investor is a  corporation,  partnership,  trust or
     estate:  (i) the  individual  executing and  delivering  this  Agreement on
     behalf of the Investor has been duly  authorized  and is duly  qualified to
     execute and deliver this Agreement on behalf of Investor in connection with
     the  purchase of the Shares and (ii) the  signature of such  individual  is
     binding upon Investor.

          f. Investment Experience.  The Investor is an "accredited investor" as
     that term is defined in  Regulation D  promulgated  by the  Securities  and
     Exchange  Commission.  The term  "Accredited  Investor" under  Regulation D
     refers to:

                  (i) A person or entity who is a director or executive  officer
     of the Corporation;

                  (ii) Any bank as defined in Section  3(a)(2) of the Securities
     Act, or any savings and loan association or other institution as defined in
     Section  3(a)(5)(A) of the  Securities Act whether acting in its individual
     or fiduciary capacity;  any broker or dealer registered pursuant to Section
     15 of the Exchange Act;  insurance  Corporation as defined in Section 2(13)
     of  the  Securities  Act;  investment   Corporation  registered  under  the
     Investment  Corporation Act of 1940; or a business development  Corporation
     as defined in  Section  2(a)(48)  of that Act;  Small  Business  Investment
     Corporation  licensed  by the  U.S.  Small  Business  Administration  under
     Section  301(c) or (d) of the Small  Business  Investment  Act of 1958; any
     plan established and maintained by a state, its political subdivisions,  or
     any agency or instrumentality of a state or its political  subdivisions for
     the benefit of its  employees,  if such plan has total  assets in excess of
     $5,000,000;  employee  benefit  plan  within the  meaning  of the  Employee
     Retirement Income Security Act of 1974, if the investment  decision is made
     by a plan  fiduciary,  as defined in  Section  3(21) of such Act,  which is
     either a bank,  savings and loan  association,  insurance  Corporation,  or
     registered  investment  adviser,  or if the employee benefit plan has total
     assets in excess of $5,000,000 or, if a self-directed plan, with investment




     decision made solely by persons that are accredited investors;

                  (iii) Any private business development  Corporation as defined
     in Section 202(a)(22) of the Investment Advisers Act of 1940;

                  (iv) Any  organization  described in Section  501(c)(3) of the
     Internal  Revenue  Code,  corporation,  Massachusetts  or similar  business
     trust, or partnership, not formed for the specific purpose of acquiring the
     Securities offered, with total assets in excess of $5,000,000;

                  (v) Any natural person whose  individual  net worth,  or joint
     net worth with that person's  spouse,  at the time of his purchase  exceeds
     $1,000,000;

                  (vi) Any natural person who had an individual income in excess
     of $200,000 during each of the previous two years or joint income with that
     person's  spouse  in excess of  $300,000  in each of those  years and has a
     reasonable  expectation  of reaching  the same income  level in the current
     year;

                  (vii) Any trust,  with total  assets in excess of  $5,000,000,
     not formed for the specific  purpose of acquiring the  Securities  offered,
     whose  purchase  is  directed  by a  person  who  has  such  knowledge  and
     experience  in  financial  and  business  matters  that  he is  capable  of
     evaluating the merits and risks of the prospective investment; or

                  (viii)  Any  entity  in which  all of the  equity  owners  are
     accredited investors.

                  (ix) As used in this Section 4(g),  the term "net worth" means
     the excess of total  assets  over  total  liabilities.  For the  purpose of
     determining  a person's  net worth,  the  principal  residence  owned by an
     individual  should be valued at fair market  value,  including  the cost of
     improvements,  net of current  encumbrances.  As used in this Section 4(g),
     "income" means actual economic income, which may differ from adjusted gross
     income  for  income  tax  purposes.  Accordingly,  the  undersigned  should
     consider  whether  it should add any or all of the  following  items to its
     adjusted  gross  income for income tax  purposes  in order to reflect  more
     accurately  its  actual  economic  income:  Any  amounts   attributable  to
     tax-exempt  income  received,  losses  claimed as a limited  partner in any
     limited partnership,  deductions claimed for depletion, contributions to an
     IRA or Keogh retirement plan, and alimony payments.

     5. Lock-Up.  The Investor  acknowledges and agrees that the Shares shall be
     subject to certain  restrictions on transfer  following a registered public
     offering  of  the   Corporation's   securities.   In  connection  with  any
     registration of the Corporation's securities, the Investor agrees, upon the
     request of the Corporation  and/or the underwriters  managing such offering
     of the Corporation's securities, if applicable, not to sell, make any short
     sale of, loan,  grant any option for the purchase of, or otherwise  dispose
     of any Shares (other than those included in the  registration)  without the
     prior  written  consent  of  the  Corporation  and,  if  applicable,   such
     underwriters,  as the case may be, for such  period of time,  not to exceed
     fourteen  (14) days before and one  hundred  eighty  (180) days,  after the
     effective date of such  registration as the Corporation or the underwriters
     may specify; provided, however, that all executive officers,  directors and
     shareholders holding more than 1% of the fully diluted capital stock of the
     Corporation enter into similar agreements. The Corporation and underwriters
     may request such  additional  written  agreements  in  furtherance  of such
     standoff in the form  reasonably  satisfactory  to the Corporation and such
     underwriter.  The  Corporation may also impose  stop-transfer  instructions
     with respect to the shares subject to the foregoing  restrictions until the
     end of said one hundred eighty (180) day period. Furthermore,  with respect
     to (i) the First Purchase  Shares for a period of 18 months after the First
     Closing and (ii) the Second Purchase Shares for a period of 12 months after
     the Second Closing , the Investor  agrees not to sell,  make any short sale
     of, loan, grant any option for the purchase of, or otherwise dispose of any
     such Shares.

     6. Restrictive  Legends.  Each certificate  evidencing the Shares which the
     Investor may acquire  hereunder  and any other  securities  issued upon any
     stock split,  stock dividend,  recapitalization,  merger,  consolidation or
     similar event (unless no longer  required in the opinion of the counsel for
     the Corporation)




     shall be imprinted with one or more legends  substantially in the following
     form:

     THE SHARES  REPRESENTED BY THIS  CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED, OR UNDER ANY STATE SECURITIES LAWS,
     AND MAY BE OFFERED  AND SOLD ONLY IF SO  REGISTERED  OR AN  EXEMPTION  FROM
     REGISTRATION  IS  AVAILABLE.  THE HOLDER OF THESE SHARES MAY BE REQUIRED TO
     DELIVER TO THE COMPANY,  IF THE COMPANY SO REQUESTS,  AN OPINION OF COUNSEL
     (REASONABLY  SATISFACTORY  IN FORM AND  SUBSTANCE  TO THE  COMPANY)  TO THE
     EFFECT THAT AN EXEMPTION  FROM  REGISTRATION  UNDER THE  SECURITIES ACT (OR
     QUALIFICATION UNDER STATE SECURITIES LAWS) IS AVAILABLE WITH RESPECT TO ANY
     TRANSFER OF THESE SHARES THAT HAS NOT BEEN SO REGISTERED (OR QUALIFIED).

     THE COMPANY IS AUTHORIZED TO ISSUE MORE THAN ONE CLASS OF STOCK.  A COPY OF
     THE PREFERENCES, POWERS, QUALIFICATIONS AND RIGHTS OF EACH CLASS AND SERIES
     WILL BE PROVIDED TO EACH STOCKHOLDER WITHOUT CHARGE, UPON WRITTEN REQUEST.

     The  Corporation  shall be entitled to enter stop  transfer  notices on its
     transfer books with respect to the Securities.

     7. Miscellaneous.

          a. Notices.  Any notice,  request or other  communication  required or
     permitted  hereunder  will be in  writing  and shall be deemed to have been
     duly given if personally delivered or if telecopied or mailed by registered
     or certified  mail,  postage  prepaid,  at the respective  addresses of the
     parties as set forth below.  Any party hereto may by notice so given change
     its address for future notice hereunder. Notice will be deemed to have been
     given when personally delivered or when deposited in the mail or telecopied
     in the manner set forth above and will be deemed to have been received when
     delivered.

                  (a) If to the Investor: as set forth on Schedule 1

                  (b) If to the Company

                      Enova Systems, Inc.
                      19850 South Magellan Drive
                      Torrance, California  90502
                      Attention:  President

                      with a copy to:


                      Reed Smith Crosby Heafey
                      1999 Harrison Street,  25th Flr.
                      Oakland, CA 94612
                      Attention:  Donald C. Reinke, Esq.
                      Telecopier (510) 466-6899

          b. Survival. The representations, warranties, covenants and agreements
     made herein  shall  survive the  closing of the  transactions  contemplated
     hereby.

          c.  Successors  and Assigns.  Except as otherwise  expressly  provided
     herein,  the terms and  conditions  of this  Agreement  shall  inure to the
     benefit of and be binding upon the respective successors and assigns of the
     parties.

          d.  Applicable  Law.  This  Agreement  and all acts  and  transactions
     pursuant  hereto and the




     rights and  obligations of the parties hereto shall be governed,  construed
     and  interpreted  in accordance  with the laws of the State of  California,
     without giving effect to principles of conflicts of law.

          e.  Counterparts.  This  Agreement  may be  executed  in any number of
     counterparts, each of which shall be an original, but all of which together
     shall  constitute  one  instrument.  This  Agreement  may  be  executed  by
     facsimile.

          f. Title and Subtitles.  The titles of the Sections and subsections of
     this Agreement are for the  convenience of reference only and are not to be
     considered in construing this Agreement.

          g.  Attorney's  Fees.  If any  action at law or in  equity  (including
     arbitration)  is  necessary  to  enforce  or  interpret  the  terms of this
     Agreement,  the prevailing party shall be entitled to reasonable attorney's
     fees, costs and necessary  disbursements in addition to any other relief to
     which it may be entitled.

          h. Waiver.  The provisions of this  Agreement may be waived,  altered,
     amended or repealed,  in whole or in part, only upon the written consent of
     the  Corporation  and the  Investor.  No waiver by any party  hereto of any
     breach of this  Agreement by any other party shall  operate or be construed
     as a waiver  of any  other or  subsequent  breach.  No  waiver by any party
     hereto of any breach of this  Agreement  by any other party hereto shall be
     effective  unless it is in writing and signed by the party  claimed to have
     waived such breach.

          i. Remedies Cumulative;  Specific Performance. The rights and remedies
     of the  parties  hereto  shall be  cumulative  (and not  alternative).  The
     parties  to this  Agreement  agree  that,  in the  event of any  breach  or
     threatened  breach by the  Corporation  to this  Agreement of any covenant,
     obligation or other  provision set forth in this  Agreement for the benefit
     of any other  party to this  Agreement,  such other party shall be entitled
     (in  addition  to any other  remedy that may be  available  to it) to (A) a
     decree  or order  of  specific  performance  or  mandamus  to  enforce  the
     observance and performance of such covenant, obligation or other provision,
     and (B) an injunction restraining such breach or threatened breach.

          j. Severability.  If one or more provisions of this Agreement are held
     to be unenforceable  under applicable law, the parties agree to renegotiate
     such provision in good faith to achieve the closest  comparable terms as is
     possible.  In the event that the parties cannot reach a mutually  agreeable
     and enforceable  replacement  for such  provision,  then (a) such provision
     shall be excluded  from this  Agreement,  (b) the balance of the  Agreement
     shall be  interpreted  as if such  provision  were so excluded  and (c) the
     balance of the Agreement shall be enforceable in accordance with its terms.

          k. Venue. Any action,  arbitration,  or proceeding arising directly or
     indirectly  from  this  Agreement  or  any  other  instrument  or  security
     referenced herein shall be litigated or arbitrated, as appropriate,  in the
     County of Los Angeles, State of California.

          l.   Entire Agreement. This Agreement and the Exhibits,  Schedules and
               other  documents   referred  to  herein   constitute  the  entire
               agreement  between the parties  hereto  pertaining to the subject
               matter hereof,  and any and all other written or oral  agreements
               regarding the subject matter hereof existing  between the parties
               hereto are expressly canceled.




                               SIGNATURE PAGE TO

                            STOCK PURCHASE AGREEMENT


         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the day and year hereinabove first written.



HYUNDAI HEAVY INDUSTRIES Co., Ltd.          ENOVA SYSTEMS, INC.




______________________________              __________________________________

By: Dr. Keh-Sik Min, President/CEO          Carl D. Perry, President/CEO

                                   Schedule 1

Closing Date:  March 18, 2003

                    First Year     Second Year

Number of Shares:   23,076,923     [TO BE DETERMINED AT SECOND CLOSING
                                   ACCORDING TO SECTION 1.(a) OF THIS
                                   AGREEMENT]


Purchase Price:     US$1,500,000   US$1,500,000


Price per share:    $0.065         $0.XX_[SEE FORMULA ABOVE]