SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

     Date of Report (Date of earliest event reported)        July 21, 2005
                                                             -------------

                          Caithness Coso Funding Corp.
                          ----------------------------
             (Exact name of registrant as specified in its charter)

          Delaware                      333-83815                94-3328762
          --------                      ---------                ----------
(State or other jurisdiction           (Commission              (IRS Employer
      of incorporation)                File Number)          Identification No.)

     Coso Finance Partners              California               68-0133679
     Coso Energy Developers             California               94-3071296
     Coso Power Developers              California               94-3102796
     ---------------------              ----------               ----------
 (Exact names of Registrants          (State or other         (I.R.S. Employer
as specified in their charters)       jurisdiction of        Identification No.)
                                       incorporation)

      565 Fifth Avenue, 29th Floor, New York, New York          10017-2478
      ------------------------------------------------          ----------
          (Address of principal executive offices)              (Zip Code)

      Registrant's telephone number, including area code   (212) 921-9099
                                                           --------------

                                 Not Applicable
                                 --------------
         (Former name or former address, if changed since last report.)


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the securities act (17 CFR
    230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
    240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
    Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
    Act (17 CFR 240.13e-4(c))



Section 8 - Other Events

Item 8.01 - Other Events

The Coso projects consist of three 80 MW geothermal power plants, called Navy I,
BLM and Navy II (together,  the "Coso Partnerships"),  their transmission lines,
wells, gathering system and other related facilities. Coso Finance Partners owns
Navy I and its  related  facilities,  Coso  Energy  Developers  owns BLM and its
related  facilities  and Coso  Power  Developers  owns  Navy II and its  related
facilities.

Caithness  Coso Funding Corp.  ("Funding  Corp.") is a  single-purpose  Delaware
Corporation  formed to issue Series B Senior Secured Notes due in 2009 ("Notes")
for its own account and as an agent  acting on behalf of the Coso  Partnerships.
On May 28,  1999,  Funding  Corp.  sold $413  million of senior  secured  notes,
including $303 million of Notes of which approximately $208 million is currently
outstanding.  Pursuant to separate credit  agreements  between Funding Corp. and
each partnership, the net proceeds from the offering of the Notes were loaned to
the Coso Partnerships.

Funding Corp. to Refinance Notes

The Coso  Partnerships  and Funding  Corp.  intend to engage in a financing  for
Funding Corp. to issue  securities in accordance with Rule 144A and Regulation S
for  approximately  $375  million  of  senior  secured  bonds  due in  2019  and
approximately   $90  million  of   subordinated   secured   notes  due  in  2014
(collectively,  the "Securities").  The proceeds from the sale of the securities
will be used to (i) redeem  the Notes,  including  prepayment  premiums  and any
fees,  costs and expense related  thereto,  (ii) fund various reserve  accounts,
(iii) pay costs and expenses  incurred in issuing the  Securities  and (iv) make
loans to the Coso  Partnerships to allow for  distributions  to their respective
beneficial owners.

The  Securities  will not be  registered  under the  Securities  Act of 1933, as
amended (the "Act"),  and may not be offered or sold in the United States absent
registration or an applicable exemption from registration requirements.

This  8-K is  being  filed  for the  purpose  of  complying  with  Rule  135c(d)
promulgated under the Act.

Certain information included in this report contains forward-looking  statements
made pursuant to the Private  Securities  Litigation Reform act of 1995 ("Reform
Act"). Such statements are based on current expectations and involve a number of
known and unknown risks and  uncertainties  that could cause the actual  results
and performance of the Coso  Partnerships to differ materially from any expected
future  results or  performance,  expressed or implied,  by the  forward-looking
statements including  expectations regarding the future results of operations of
the Coso  Partnerships.  In  connection  with the safe harbor  provisions of the
Reform Act, the Coso Partnerships  have identified  important factors that could
cause actual  results to differ  materially  from such  expectations,  including
resolution  of  the  energy  crisis  in   California,   operating   uncertainty,
uncertainties  relating  to  geothermal  resources,  uncertainties  relating  to
economic and  political  conditions  and  uncertainties  regarding the impact of
regulations,   changes  in  government  policy,  judicial  decisions,   industry
deregulation and  competition.  Reference is made to all of the Registrants' SEC
filings incorporated herein by reference, for a description of such factors. The
Registrants  assume  no  responsibility  to update  forward-looking  information
contained herein.


                                   SIGNATURES


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                       CAITHNESS COSO FUNDING CORP.,
                                       a Delaware corporation

Date:  July 21, 2005                   By:  /S/ CHRISTOPHER T. MCCALLION
                                            ----------------------------
                                                Christopher T. McCallion
                                                Executive Vice President &
                                                Chief Financial Officer
                                                (Principal Financial and
                                                Accounting Officer)


                                       COSO FINANCE PARTNERS AND SUBSIDIARY
                                       a California general Partnership

                                       By: New CLOC Company, LLC,
                                             its Managing General Partner

                                       By:  /S/ CHRISTOPHER T. MCCALLION
                                            ----------------------------
                                                Christopher T. McCallion
                                                Executive Vice President &
                                                Chief Financial Officer
                                                (Principal Financial and
                                                Accounting Officer)


                                       COSO ENERGY DEVELOPERS
                                       a California general Partnership

                                       By: New CHIP Company, LLC,
                                             its Managing General Partner

                                       By:  /S/ CHRISTOPHER T. MCCALLION
                                            ----------------------------
                                                Christopher T. McCallion
                                                Executive Vice President &
                                                Chief Financial Officer
                                                (Principal Financial and
                                                Accounting Officer)


                                       COSO POWER DEVELOPERS AND SUBSIDIARY
                                       a California general Partnership

                                       By: New CTC Company, LLC,
                                             its Managing General Partner

                                       By:  /S/ CHRISTOPHER T. MCCALLION
                                            ----------------------------
                                                Christopher T. McCallion
                                                Executive Vice President &
                                                Chief Financial Officer
                                                (Principal Financial and
                                                Accounting Officer)