U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 12b-25

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                                                       SEC FILE NUMBER
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                                                           1-12738
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         NOTIFICATION OF LATE FILING
             (Check One:)
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                                                        CUSIP NUMBER
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                                                           68284P 10 8
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|X| Form 10-K and  10-KSB |_| Form 20-F  |_| Form 11-K  |_| Form 10-Q and 10-QSB
|_| Form N-SAR

         For Period Ended: June 30, 2002

         [ ]      Transition Report on Form 10-K
         [ ]      Transition Report on Form 20-F
         [ ]      Transition Report on Form 11-K
         [ ]      Transition Report on Form 10-Q
         [ ]      Transition Report on Form N-SAR

         For the Transition Period Ended:__________

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Read the attached instruction sheet before preparing form. Please print or type.
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Nothing  in  this  form  shall  be  construed  to  imply that the Commission has
verified any information contained herein.
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If  the  notification relates to a portion of the filing checked above, identify
the Item(s) to which the notification relates:
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PART I -- REGISTRANT INFORMATION
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Full Name of Registrant
ONSITE ENERGY CORPORATION
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Former Name if Applicable
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Address of Principal Executive Office (Street and Number)
701 PALOMAR AIRPORT ROAD, SUITE 200
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City, State and Zip Code
CARLSBAD, CA 92009
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PART II -- RULES 12b - 25(b) and (c)
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If  the subject report could not be filed without unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate.)

|X| (a) The reasons  described  in  reasonable  detail in  Part III of this form
        could not be eliminated without unreasonable effort or expense;



|X| (b) The subject annual report, semi-annual report, transition report on Form
        10-K, Form 20-K,Form 11-K, Form N-SAR or a portion thereof will be filed
        on or before the fifteenth calendar  day  following  the  prescribed due
        date; or the subject  quarterly report or transition report on Form 10-Q
        or portion thereof will  be  filed  on or  before the fifth calendar day
        following the prescribed due date; and

    (c) The  accountant's statement  or other exhibit required by Rule 12b-25(c)
        has been attached if applicable.

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PART III -- NARRATIVE
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State below in  reasonable  detail the  reasons why Form 10-K and 10-KSB,  20-F,
11-K, 10-Q and 10-QSB,  N-SAR, or the transition report or portion thereof could
not be filed within the prescribed period.

The Company is continuing to evaluate certain issues that when resolved may have
a  material  impact  on  the  financial  statements  and other disclosures as of
June 30, 2002.

                                              (Attached Extra Sheets if Needed).
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PART IV -- OTHER INFORMATION
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     (1)    Name  and  telephone  number  of person to contact in regard to this
notification.

     Paul E. Blevins                 760                 931-2400
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       (Name)                      (Area Code)        (Telephone Number)

     (2)    Have all other periodic  reports  required under section 13 or 15(d)
of the Securities Exchange Act  of  1934 or section 30 of the Investment Company
Act  of  1940  during  the  preceding 12 months or for such shorter  period that
the registrant was required to file such report(s) been filed?  If the answer is
no, identify report(s).

                                                           |X| Yes        |_| No

     (3)    Is  it  anticipated  that  any  significant  change  in  results  of
operations  from  the  corresponding  period  for  the  last fiscal year will be
reflected by the earnings  statements  to  be  included in the subject report or
portion thereof?

                                                           |X| Yes       |_|  No

      If so: attach an explanation of the anticipated  change, both  narratively
and quantitatively, and, if appropriate,  state the  reasons  why  a  reasonable
estimate of the results cannot be made.

      For  the  fiscal  year  ended  June  30,  2002,  the  Company  anticipates
recognizing  net  income  (under  current  assumptions) of  between  $155,000 to
$255,000 compared to net income of  approximately  $1,622,000  for  fiscal  year
ended June 30, 2001. The amount of the profit is subject to change as  a  result
of the  resolution of the issues  disclosed in PART III above.    The difference
between the 2001 and 2002  fiscal  year  ends  primarily  is  attributable  to a
decrease in gross margins on one major  project  completed in the fourth quarter
and an increase in selling, general and administrative expenses primarily due to
increases in business development costs associated  with  one of  the  Company's
subsidiaries and the energy projects business.







                           ONSITE ENERGY CORPORATION
                  (Name of Registrant as specified in charter)

has  caused  this  notification  to  be  signed on its behalf by the undersigned
thereunto duly authorized.




Date: September 30, 2002          By:  /S/ RICHARD T. SPERBERG
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                                          Richard T. Sperberg, President and CEO