EXHIBIT 3.6

                              AMENDMENT AGREEMENT
                              -------------------
                                     (CFP)

     This AMENDMENT AGREEMENT ("Agreement") is entered into and is effective as
of this 28 day of May, 1999, by and among COSO FINANCE PARTNERS, a California
general partnership ("CFP"), CAITHNESS ACQUISITION COMPANY, LLC, a Delaware
limited liability company ("CAC"), NEW CLOC COMPANY, LLC ("New CLOC"), a
Delaware limited liability company, ESCA, LLC, a Delaware limited liability
company ("ESCA") and COSO OPERATING COMPANY LLC ("COC"), a Delaware limited
liability company.

                                   RECITALS
                                   --------

     WHEREAS, CFP is a California general partnership that is the owner of a
geothermal power facility located in Inyo County, California, commonly known as
the Navy I Project (the "Project");

     WHEREAS, CFP was, prior to February 25, 1999, co-owned by ESCA Limited
Partnership (predecessor to ESCA), an affiliate of Caithness Energy, L.L.C., a
Delaware limited liability company ("Caithness Energy") and China Lake Operating
Company ("CLOC"), a former affiliate of CalEnergy Company, Inc., a Delaware
corporation ("CalEnergy").  CFP was constituted under the General  Partnership
Agreement of CFP, as amended (the "Partnership Agreement") and was managed by
COC, previously a wholly owned subsidiary of CalEnergy, as assignee of
CalEnergy, pursuant to two Operations and Maintenance Agreements (the "O&M
Agreements");

     WHEREAS, CLOC previously served as the Managing General Partner and COC
previously served as the Operator of the Project, in consideration for which
CLOC and COC received a management fee (the "Management Fee") and operator fees
(the "Operator Fees") in accordance with the Partnership Agreement and O&M
Agreements.  CLOC also received a fee in consideration for its participation as
a member of the Management Committee of CFP (the "Committee Fee");

     WHEREAS, on February 25, 1999, CLOC was merged with and into New CLOC, a
wholly owned subsidiary of CAC itself a wholly owned subsidiary of Caithness
Energy.  In addition, CAC acquired COC;

     WHEREAS, New CLOC, as successor to CLOC, now serves as the Managing General
Partner of CFP;

     WHEREAS, COC, now a wholly owned subsidiary of CAC, in conjunction with FPL
Energy Operating Services, Inc., now serves as the Operator of the Project;

     WHEREAS, CAC, as sole parent of New CLOC and COC, has agreed to a large
reduction in the amount of the Management Fee and has negotiated a reduction in
Operator Fees


from those fees previously in effect.  Furthermore, New CLOC has agreed to
eliminate the Committee Fee.  These reductions in fees are in the best interests
of CFP and will have the effect of bringing the amount the Management Fee and
Operating Fees more in line with the actual cost of running the Project.

     WHEREAS, CAC, as parent of New CLOC and COC, has also agreed that the right
to receive the Management Fee and Operator Fees payable to COC shall be
subordinate to debt service payments.  This will reverse the prior arrangement,
pursuant to which debt service payments were subordinate to CLOC and COC's
rights to receive the Management Fee and Operator Fees.  This will constitute a
substantial benefit to CFP as it will increase the amount of cash available for
debt service;

     WHEREAS, in consideration for CAC's agreement to cause its subsidiaries to
amend the Partnership Agreement and O&M Agreements with COC to reflect the
restructuring of these fees and to negotiate lower operating fees with FPL
Operating Services, Inc., ESCA has agreed to pay to CAC a one-time fee that will
represent its share of the net present value of the savings that will result
from the restructuring of the fee payments over the next ten years.

     NOW, THEREFORE, in consideration of the foregoing Recitals, which are by
this reference incorporated herein, and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the parties hereto
agree as follows:

                                   AGREEMENT


     1.   Reduction and Subordination of Fees.  CAC, as parent of New CLOC and
          -----------------------------------
COC, hereby agrees to cause New CLOC and COC to execute and deliver an amended
Partnership Agreement and O&M Agreement reflecting a reduction in the amount of
the Management Fee payable to ESCA and Operator Fees payable to COC and
elimination of the Committee Fee payable to New CLOC.

     2.   Subordination of Fees.  CAC also agree that it will cause COC to
          ---------------------
execute an agreement pursuant to which its right to receive Operator Fees shall
be subordinate to debt service payments on account of the new senior secured
debt.

     3.   Fee Buy Down Amount.  The net present value of aggregate amount of the
          -------------------
savings over the next ten years to CFP resulting from CAC's agreement to cause
New CLOC and COC to execute and deliver an amended Partnership Agreement and O&M
Agreement is approximately $17,214,000 (the "Fee Buy Down Amount").

     4.   Payment by ESCA. Upon execution of the amended Partnership Agreement
          ---------------
and new O&M Agreement described in Section 1 and solely from funds received by
ESCA from distributions in connection with the refinancing of the senior debt of
CFP, ESCA shall pay to

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CAC, as designee of New CLOC and COC, in consideration for CAC's acceptance of
the provisions herein, the sum of $9,226,000, which represents ESCA's share of
the Fee Buy Down Amount equal to ESCA, LLC's proportionate ownership of CFP.

     5.   Further Assurances.  The parties hereto agree that, at any times and
          ------------------
from time to time, upon the written request of the other, such party will
promptly and duly execute and deliver any and all such further instruments and
documents and take such further action as the other party may reasonably request
in order to obtain the full benefit of the this Agreement.

     6.   Severability.  Any provision of this Agreement which is prohibited,
          ------------
unenforceable or not authorized in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such prohibition, unenforceability
or non-authorization, without invalidating the remaining provisions hereof or
affecting the validity, enforceability or legality of such provision in any
other jurisdiction.

     7.   Successors and Assigns.  Whenever in this Agreement any of the parties
          ----------------------
hereto is named or referred to, successors and assigns of such party shall be
deemed to be included and all covenants, promises and agreements in this
Agreement by and on behalf of the respective parties hereto shall be binding
upon and inure to the benefit of the respective successors and permitted assigns
of such parties, whether so expressed or not.

     8.   Governing Law.  This Agreement shall be governed by, interpreted
          -------------
under, and construed and enforced in accordance with the laws of the State of
California.

     9.   Amendments and Waivers.  This Agreement may be amended only by a
          ----------------------
writing signed by the parties hereto.  No amendment or waiver of any provision
of this Agreement nor consent by any party or any departure by any other party
herefrom shall in any event be effective unless the same shall be in writing and
signed by the party to be charged thereby.  Any such waiver or consent shall be
effective only in the specific instance and for the specific purpose for which
given.  No failure on the part of any party hereto to exercise, and no delay in
exercising, any right hereunder shall operate as a waiver thereof (except as
expressly provided herein) nor shall any single or partial exercise or any right
hereunder preclude any other or further exercise thereof or the exercise of any
other right.

     10.  Headings.  The section headings in this Agreement are included herein
          --------
for convenience of reference only and shall not constitute a part of this
Agreement for any other purpose.

     11.  Counterparts.  This Agreement may be executed in any number of
          ------------
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

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     IN WITNESS WHEREOF, the Parties have executed this Agreement as of the
Effective Date.

     CAITHNESS ACQUISITION COMPANY, LLC,
     a Delaware limited liability company

     By:    /s/ James D. Bishop, Jr.
          ----------------------------------------------
          James D. Bishop, Jr.
          Vice Chairman

     NEW CLOC COMPANY, LLC,
     a Delaware limited liability company

     By:    /s/ James D. Bishop, Jr.
          ----------------------------------------------
          James D. Bishop, Jr.
          Vice Chairman

     COSO OPERATING COMPANY LLC,
     a Delaware limited liability company

     By:    /s/ James D. Bishop, Jr.
          ----------------------------------------------
          James D. Bishop, Jr.
          Vice Chairman

     ESCA, LLC,
     a Delaware limited liability company

     By:  Caithness Geothermal 1980 Ltd., L.P.,
          a Delaware limited partnership,
          its Member

          By:  Caithness Power, L.L.C.,
               a Delaware limited liability company,
               its General Partner

               By:    /s/ James D. Bishop, Jr.
                    ----------------------------------------------
                    James D. Bishop, Jr.
                    Vice Chairman

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     By:  Caithness Power, L.L.C.,
          a Delaware limited liability company,
          its Managing Member

          By:    /s/ James D. Bishop, Jr.
               ----------------------------------------------
               James D. Bishop, Jr.
               Vice Chairman

     By:  ESI Geothermal, Inc.,
          a Florida corporation,
          its Member

          By:    /s/ Kenneth P. Hoffman
               ----------------------------------------------
               Name:     Kenneth P. Hoffman
                    -------------------------------------------
               Title:    Vice President
                     ------------------------------------------

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     COSO FINANCE PARTNERS,
     a California general partnership

     By:  New CLOC Company, LLC,
          a Delaware limited liability company,
          its Managing General Partner

          By:    /s/ James D. Bishop, Jr.
               ----------------------------------------------
               James D. Bishop, Jr.
               Vice Chairman

     By:  ESCA, LLC,
          a Delaware limited liability company,
          its General Partner

          By:  Caithness Geothermal 1980 Ltd., L.P.,
               a Delaware limited partnership,
               its Member

               By:  Caithness Power, L.L.C.,
                    a Delaware limited liability company,
                    its General Partner

                    By:    /s/ James D. Bishop, Jr.
                         ----------------------------------------------
                         James D. Bishop, Jr.
                         Vice Chairman

          By:  Caithness Power, L.L.C.,
               a Delaware limited liability company,
               its Managing Member

               By:    /s/ James D. Bishop, Jr.
                    ----------------------------------------------
                    James D. Bishop, Jr.
                    Vice Chairman

          By:  ESI Geothermal, Inc.,
               a Florida corporation,
               its Member

               By:     /s/ Kenneth P. Hoffman
                    ----------------------------------------------
                    Name:     Kenneth P. Hoffman
                    Title:    Vice President

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