Exhibit 23.3

     In connection with the Purchase Agreement, dated May 21, 1999 (the
"Purchase Agreement"), among Caithness Coso Funding Corp. (the "Issuer"), Coso
Finance Partners, a California general partnership, Coso Energy Developers, a
California general partnership, and Coso Power Developers, a California general
partnership (collectively, the "Guarantors"), the Donaldson, Lufkin & Jenrette
Securities Corporation (the "Initial Purchaser"), relating to the Issuer's 6.80%
Senior Secured Notes due 2001 (the "2001 Notes") and the Issuer's 9.05% Senior
Secured Notes due 2009 (the "2009 Notes" and, together with the 2001 Notes, the
"Notes") and each Guarantor's guarantee of the Notes, Sandwell Engineering Inc.
(the "Independent Engineer"), hereby certifies as follows:

     1. The Independent Engineer has consented to the references to it in the
        Exchange Offer Registration Statement (as defined in the Purchase
        Agreement) and to the use of the report prepared by the Independent
        Engineer, dated May 20, 1999, and contained in Exhibit A to the Exchange
        Offer Registration Statement (the "Independent Engineer's Report").

Dated:  July 22, 1999

                              SANDWELL ENGINEERING INC.


                              By:       /s/   R. G. Low
                                 ------------------------------------------
                                    Richard G. Low, P.Eng.
                                    Project Manager