U.S SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
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FORM 12B-25                                                 SEC FILE NUMBER
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                           NOTIFICATION OF LATE FILING
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                                  (CHECK ONE):               CUSIP NUMBER
                                                              148449309
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                                                               OMB Approval
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          / / Form 10-K  / / Form 11-K  / / Form 20-F  /X/ Form 10-Q

                         For Period Ended: June 30, 2003
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  Read Instruction (on back page) Before Preparing Form. Please Print or Type.

      Nothing in this Form Shall be construed to imply that the Commission
                   has verified any information contained herein.

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                   Castle Energy Corporation
  Former Name if Applicable
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  Address of Principal Executive Office (Street and Number)

                                        One Radnor Corporate Center
                                        100 Matsonford Road, Suite 250

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  City, State and Zip Code
                                            Radnor, PA 19087

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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).

                  (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/portion thereof will be filed
                        on or before the fifteenth calendar day following the
                        prescribed due date; or the subject quarterly
                        report/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 the Form
                  10-K, 11-K, 20-F or 10-Q, or portion thereof, could not be
                  filed within the prescribed time period.

                  Filing of Form 10-Q could not be completed within the
                  prescribed time because:

                  a.    Due to electronic transmission problems, legal comments
                        from the Company's general counsel could not be
                        transmitted to the Company.

                  b.    It was not possible to convene all personnel necessary
                        to review an issue that arose during the 10-Q review
                        process.

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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

             Richard E. Staedtler           610                995-9400
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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) during the preceding 12
             months (or for such shorter period that the registrant was required
             to file such reports) been filed? If 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 can not be made.


             In fiscal 2002, the Company earned net income of $632,000 for the
             six months ended March 31, 2002. The Company expects a net loss of
             $728,000 for the six months ended March 31, 2003 but it is possible
             that such estimate may change before filing.

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                            Castle 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  August 14, 2003            BY     RICHARD E. STAEDTLER
                    -----------------              ---------------------------
                                                      Chief Financial Officer

             INSTRUCTION: The form may be signed by an executive officer of the
             registrant or by any other duly authorized representative. The name
             and title of the person signing the form shall be typed or printed
             beneath the signature. If the statement is signed on behalf of the
             registrant by an authorized representative (other than an executive
             officer), evidence of the representative's authority to sign on
             behalf of the registrant shall be filed with the form.

                                    ATTENTION
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         Intentional misstatements or omissions of fact constitute Federal
         Criminal Violations (See 18 U.S.C. 1001).


                              GENERAL INSTRUCTIONS
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         1.    This Form is required by Rule 12b-25 (17 CFR 240.12b-25) of the
               General Rules and Regulations under the Securities Exchange Act
               of 1934.

         2.    One signed original and four conformed copies of this Form and
               amendments thereto must be completed and filed with the
               Securities and Exchange Commission, Washington, D.C. 20549, in
               accordance with Rule 0-3 of the General Rules and Regulations
               under the Act. The information contained in or filed with the
               Form will be made a matter of public record in the Commission
               files.

         3.    A manually signed copy of the form and amendments thereto shall
               be filed with each national securities exchange on which any
               class of securities of the registrant is registered.

         4.    Amendments to the notifications must also be filed on Form 12b-25
               but need not restate information that has been correctly
               furnished. The Form shall be clearly identified as an amended
               notification.