Exhibit 23.5

                          CONSENT OF GEOTHERMEX, INC.

     In connection with the filing with the Securities and Exchange Commission
on or about October 7, 1999, of Amendment No. 1 to Registration Statement on
Form S-4 (the "Exchange Offer Registration Statement") of Caithness Coso Funding
Corp. (the "Issuer"), Coso Finance Partners, Coso Energy Developers and Coso
Power Developers, relating to the Issuer's offer to exchange any and all of its
outstanding 6.80% Series A Senior Secured Notes due 2001 for its 6.80% Series B
Senior Secured Notes due 2001 and any and all of its 9.05% Series A Senior
Secured Notes due 2009 for its 9.05% Series B Senior Secured Notes due 2009, the
undersigned hereby consents to the references to it in the prospectus (the
"Prospectus") included in the Exchange Offer Registration Statement and to the
inclusion of its report entitled "Independent Review of Steam Supply and
Resource - Related Capital and Operating Costs - Coso Geothermal Field for
Caithness Coso Funding Corporation [sic]" dated May 1999, as Exhibit C to the
Prospectus.


Dated:  October 6, 1999             GEOTHERMEX, INC.


                                    By /s/ Subir K. Sanyal
                                      ___________________________
                                           Subir K. Sanyal
                                           President