As filed with the Securities and Exchange Commission on May 26, 2005
                    Registration Statement No. 333-_________
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                               ENOVA SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)


              California                                      95-3056150
   -------------------------------                     ------------------------
   (State or other jurisdiction of                         (I.R.S. Employer
   incorporation or organization)                          Identification No.)


                           19850 South Magellan Drive
                           Torrance, California 90502
               (Address of principal executive offices) (Zip Code)

                             1996 STOCK OPTION PLAN
                              (Full Title of Plan)

                                Edwin O. Riddell
                      President and Chief Executive Officer
                               ENOVA SYSTEMS, INC.
                           19850 South Magellan Drive
                           Torrance, California 90502
                     (Name and address of agent for service)

                                 (310) 527-2800
          (Telephone number, including area code, of agent for service)

                         Calculation of Registration Fee
<TABLE>
<CAPTION>
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
                                                    Proposed Maximum       Proposed Maximum
 Title of Each Class of       Amount to be         Offering Price per     Aggregate Offering          Amount of
    Securities to be           Registered                Share                   Price            Registration Fee
       Registered                  (1)                    (2)                   (1)(2)                 (1)(2)
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
<S>                            <C>                       <C>                  <C>                      <C>
Common Stock, no par           65,000,000                $0.09                $5,850,000               $688.54
value
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
<FN>
(1)    The number of shares of Common Stock is the maximum  number of additional
       shares  issuable  upon the  exercise  of  options  which  may be  granted
       pursuant to the 1996 Stock Option Plan (the  "Plan").  This  Registration
       Statement also covers such indeterminable  number of shares as may become
       issuable as a result of anti-dilution provisions set forth in the Plan.

(2)    Calculated  solely for the purpose of determining the registration fee in
       accordance  with Rule 457(h) and based upon $0.09 per share of our Common
       Stock, representing the average of the bid and asked prices of our Common
       Stock on May 25, 2005, as reported by NASDAQ OTC Exchange.
</FN>
</TABLE>

<PAGE>

                                EXPLANATORY NOTE

         This  registration  statement  on Form  S-8  relates  to an  additional
20,000,000  shares of the Common Stock, no par value, of Enova Systems,  Inc., a
California   corporation   (formerly  known  as  U.S.  Electricar,   Inc.)  (the
"Registrant"),  subject to the  Registrant's  1996 Stock Option Plan, as amended
(the "Plan").  There is an effective  registration  statement on Form S-8 (filed
under the Registrant's  prior corporate name),  File Number  333-95701,  for the
balance of the shares of Common Stock  subject to the Plan,  which  registration
statement also covers certain other securities. The Plan was amended to increase
the number of shares of Common Stock available thereunder from 45,000,000 shares
to 65,000,000  shares. The contents of such earlier  registration  statement are
hereby incorporated herein by reference.

Item 8.  Exhibits.
------   --------

   Exhibit
   Number                Description
   ------                -----------
   5                     Opinion of Counsel.

   23.1                  Consent of Independent Accountants.

   23.2                  Consent of Counsel is contained in Exhibit 5 hereto.


                                      -2-
<PAGE>

                                   SIGNATURES

       Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Torrance, State of California, on May 26, 2005.


                                                     ENOVA SYSTEMS, INC.

                                                     By: /s/ Larry Lombard
                                                        -------------------


       Pursuant  to  the  requirements  of the  Securities  Act  of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.

<PAGE>

<TABLE>
<CAPTION>
Name                                     Title                                          Date
----                                     -----                                          ----
<S>                                      <C>                                            <C>
                                         President and Chief Executive Officer and
                                         Director
/s/ Edwin O. Riddell                    (Principal Executive Officer)                   May 26, 2005
------------------------
Edwin O. Riddell

/s/ Anthony N. Rawlinson                 Chairman of the Board                          May 26, 2005
-------------------------
Anthony N. Rawlinson

/s/ Malcolm R. Currie                    Director                                       May 26, 2005
----------------------
Malcolm R. Currie

/s/ Carl D. Perry                        Vice Chairman of the Board                     May 26, 2005
------------------
Carl D. Perry

/s/ John J. Micek, III                   Director                                       May 26, 2005
-----------------------
John J. Micek, III

/s/ Donald H. Dreyer                     Director                                       May 26, 2005
---------------------
Donald H. Dreyer

/s/ John R. Wallace                      Director                                       May 26, 2005
--------------------
John R. Wallace

/s/ Bjorn Ahlstrom                       Director                                       May 26, 2005
-------------------
Bjorn Ahlstrom
                                         Chief Financial Officer
/s/ Larry Lombard                       (Principal Accounting Officer)                  May 26, 2005
------------------
Larry Lombard
</TABLE>


<PAGE>

                                  EXHIBIT INDEX


Exhibit
Number            Description
------            -----------

5                 Opinion of Counsel*

23.1              Consent of Independent Accountants - Singer Lewak
                  Greenbaum  and Goldstein LLP*

23.2              Consent of Independent Accountants - Moss Adams LLP*

23.3              Consent of Counsel is contained in Exhibit 5 hereto*

*    Filed electronically herewith
[{"type": "S-8", "sequence": "1", "filename": "p19391_s8.txt", "description": "REGISTRATION STATEMENT", "secsgml_size_bytes": 7807}]
{"company-data": {"conformed-name": "ENOVA SYSTEMS INC", "cik": "0000922237", "assigned-sic": "3670", "irs-number": "953056150", "state-of-incorporation": "CA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-125284", "film-number": "05861041"}, "business-address": {"street1": "19850 SOUTH MAGELLAN DR", "street2": "SUITE 305", "city": "TORRANCE", "state": "CA", "zip": "90502", "phone": "3105272800"}, "mail-address": {"street1": "19850 SOUTH MAGELLAN DR", "street2": "SUITE 305", "city": "TORRANCE", "state": "CA", "zip": "90502"}, "former-company": {"former-conformed-name": "US ELECTRICAR INC", "date-changed": "19940425"}}
As filed with the Securities and Exchange Commission on May 26, 2005
                    Registration Statement No. 333-_________
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                               ENOVA SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)

              California                                      95-3056150
   -------------------------------                     ------------------------
   (State or other jurisdiction of                         (I.R.S. Employer
   incorporation or organization)                          Identification No.)

                           19850 South Magellan Drive
                           Torrance, California 90502
               (Address of principal executive offices) (Zip Code)

                             1996 STOCK OPTION PLAN
                              (Full Title of Plan)

                                Edwin O. Riddell
                      President and Chief Executive Officer
                               ENOVA SYSTEMS, INC.
                           19850 South Magellan Drive
                           Torrance, California 90502
                     (Name and address of agent for service)

                                 (310) 527-2800
          (Telephone number, including area code, of agent for service)

                         Calculation of Registration Fee
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
                                                    Proposed Maximum       Proposed Maximum
 Title of Each Class of       Amount to be         Offering Price per     Aggregate Offering          Amount of
    Securities to be           Registered                Share                   Price            Registration Fee
       Registered                  (1)                    (2)                   (1)(2)                 (1)(2)
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
Common Stock, no par           65,000,000                $0.09                $5,850,000               $688.54
value
------------------------- ---------------------- ----------------------- ---------------------- ----------------------
(1)    The number of shares of Common Stock is the maximum  number of additional
       shares  issuable  upon the  exercise  of  options  which  may be  granted
       pursuant to the 1996 Stock Option Plan (the  "Plan").  This  Registration
       Statement also covers such indeterminable  number of shares as may become
       issuable as a result of anti-dilution provisions set forth in the Plan.

(2)    Calculated  solely for the purpose of determining the registration fee in
       accordance  with Rule 457(h) and based upon $0.09 per share of our Common
       Stock, representing the average of the bid and asked prices of our Common
       Stock on May 25, 2005, as reported by NASDAQ OTC Exchange.
EXPLANATORY NOTE

         This  registration  statement  on Form  S-8  relates  to an  additional
20,000,000  shares of the Common Stock, no par value, of Enova Systems,  Inc., a
California   corporation   (formerly  known  as  U.S.  Electricar,   Inc.)  (the
"Registrant"),  subject to the  Registrant's  1996 Stock Option Plan, as amended
(the "Plan").  There is an effective  registration  statement on Form S-8 (filed
under the Registrant's  prior corporate name),  File Number  333-95701,  for the
balance of the shares of Common Stock  subject to the Plan,  which  registration
statement also covers certain other securities. The Plan was amended to increase
the number of shares of Common Stock available thereunder from 45,000,000 shares
to 65,000,000  shares. The contents of such earlier  registration  statement are
hereby incorporated herein by reference.

Item 8.  Exhibits.
------   --------

   Exhibit
   Number                Description
   ------                -----------
   5                     Opinion of Counsel.

   23.1                  Consent of Independent Accountants.

   23.2                  Consent of Counsel is contained in Exhibit 5 hereto.

                                      -2-
SIGNATURES

       Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Torrance, State of California, on May 26, 2005.

                                                     ENOVA SYSTEMS, INC.

                                                     By: /s/ Larry Lombard
                                                        -------------------

       Pursuant  to  the  requirements  of the  Securities  Act  of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.
Name                                     Title                                          Date
----                                     -----                                          ----
President and Chief Executive Officer and
                                         Director
/s/ Edwin O. Riddell                    (Principal Executive Officer)                   May 26, 2005
------------------------
Edwin O. Riddell

/s/ Anthony N. Rawlinson                 Chairman of the Board                          May 26, 2005
-------------------------
Anthony N. Rawlinson

/s/ Malcolm R. Currie                    Director                                       May 26, 2005
----------------------
Malcolm R. Currie

/s/ Carl D. Perry                        Vice Chairman of the Board                     May 26, 2005
------------------
Carl D. Perry

/s/ John J. Micek, III                   Director                                       May 26, 2005
-----------------------
John J. Micek, III

/s/ Donald H. Dreyer                     Director                                       May 26, 2005
---------------------
Donald H. Dreyer

/s/ John R. Wallace                      Director                                       May 26, 2005
--------------------
John R. Wallace

/s/ Bjorn Ahlstrom                       Director                                       May 26, 2005
-------------------
Bjorn Ahlstrom
                                         Chief Financial Officer
/s/ Larry Lombard                       (Principal Accounting Officer)                  May 26, 2005
------------------
Larry Lombard
EXHIBIT INDEX

Exhibit
Number            Description
------            -----------

5                 Opinion of Counsel*

23.1              Consent of Independent Accountants - Singer Lewak
                  Greenbaum  and Goldstein LLP*

23.2              Consent of Independent Accountants - Moss Adams LLP*

23.3              Consent of Counsel is contained in Exhibit 5 hereto*

*    Filed electronically herewith