EXHIBIT 99.4

              ASSIGNMENT, ASSUMPTION AND NOVATION AGREEMENT (CPD)

     THIS ASSIGNMENT, ASSUMPTION AND NOVATION AGREEMENT (this "Agreement")
is dated as of the 18/th/ day of October, 1999, by and between FPL Energy
Operating Services, Inc., a Florida corporation ("Assignor"), and Coso Operating
Company LLC, a Delaware limited liability company ("Assignee").

     All capitalized terms not otherwise defined herein have the meanings set
forth in that certain Indenture (the "Indenture"), dated as of May 28, 1999, by
and among Caithness Coso Funding Corp., a Delaware corporation, Coso Finance
Partners, a California general partnership, Coso Energy Developers, a California
general partnership, Coso Power Developers, a California general partnership,
and U.S. Bank Trust National Association as trustee.

     WHEREAS, Assignor desires to transfer all of its rights and
responsibilities respecting the Plant O&M Agreement (as defined below) to
Assignee; and

     WHEREAS, Assignee desires to assume Assignor's rights and responsibilities
under the Plant O&M Agreement.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, the parties hereto agree as follows:

     1.  ASSIGNMENT OF PLANT O&M AGREEMENT:
         ---------------------------------

         Assignor hereby grants, bargains, sells, assigns, transfers and
delivers to Assignee all of Assignor's right, title and interest in and to the
Operation and Maintenance Agreement (Navy II Project), dated as of May 28, 1999,
by and among Coso Power Developers ("CPD"), Assignee, Coso Transmission Line
Partners and Assignor (the "Plant O&M Agreement"). Except as set forth in
Section 6 hereof, such grant, bargain, sale, assignment and delivery of
Assignor's interest in the Plant O&M Agreement is made without any
representation or warranty by Assignor.

     2.  ASSUMPTION OF LIABILITIES:
         -------------------------

         Assignee hereby accepts the assignment of the Plant O&M Agreement and
hereby assumes, and agrees to pay and perform when due, the obligations imposed
upon Assignor under and with respect to the Plant O&M Agreement accruing or
arising on or after the date of this Agreement.

     3.  ADDITIONAL DOCUMENTS:
         --------------------

         (i)  In order to effectuate the assignment of the Plant O&M Agreement,
the parties will, at the sole cost and expense of Assignee, cause the following
additional documents to be executed and delivered:


          (ii)   Assumption Agreement with respect to that certain Security
Agreement (Navy II) regarding Governmental Approvals, dated as of May 28, 1999,
and amendments to the related UCC's (2);

          (iii)   Termination Agreement and Consent with respect to that certain
FPL Operating Fee Subordination Agreement (Navy II) dated as of May 28, 1999;

          (iv)   Termination Agreement with respect to that certain Consent and
Agreement (O&M Agreement) (Navy II) dated as of May 28, 1999;

          (v)    Certification from CPD, pursuant to Section 4.15 of the Credit
Agreement, dated as of May 28, 1999, by and between Caithness Coso Funding Corp.
and CPD, that the termination, amendment, replacement or modification of the
above agreements will not have a Material Adverse Effect; and

          (vi)   Notification to and consent of U.S. Bank Trust National
Association, as trustee and as collateral agent, as required by the applicable
Financing Documents.

          Assignee agrees to use its best efforts to execute, or to cause its
affiliates to execute, the documents called for by this Section. Assignor agrees
to execute such agreements, reasonably satisfactory in form and substance to it,
and take such actions as may be reasonably necessary on its part to effectuate
the foregoing. The forms of all such documents shall be prepared by Assignee or
its affiliates at its expense and shall be subject to approval by the Trustee
and Collateral Agent under the Financing Documents.

     4.   COOPERATION:
          -----------

          Assignor and Assignee shall cooperate in transferring all operating
activities under the Plant O&M Agreement including, executing the assignments,
amendments, replacements and/or terminations of applicable project operating
permits listed on Schedule I attached hereto where Assignor is named as an
applicant or a responsible party, and such further documents reasonably
satisfactory in form and substance to each of them, and taking such further
action as may be reasonably necessary for Assignee to secure permits for the
Navy II Project in its name and for relieving Assignor of any liability and
requirements under its existing permits. Assignee shall, or shall cause CPD to,
pay for all fees and expenses imposed by applicable governmental authorities.

     5.   LIABILITY AND RELEASE:
          ---------------------

          Effective upon the date first written above (the "Effective Date"),
Assignor shall have no liability to CPD or Assignee and except for Section 9.2.1
of the Plant O&M Agreement, CPD and Assignee shall have no further liability to
Assignor with respect to the Plant O&M Agreement (or any prior performance, past
or future non performance, act or omission under or with respect to the Plant
O&M Agreement) except as expressly set forth herein; and concurrent

                                       2


with the execution of this Agreement Assignor, CPD and Assignee will each cause
to be executed and delivered a Release Agreement in the form of Exhibit A-1 and
A-2, attached hereto, respectively.

     6.  PAYMENTS PURSUANT TO THE PLANT O&M AGREEMENT:
         --------------------------------------------

         On the Effective Date, Assignee shall pay to Assignor the amount set
forth on Schedule II attached hereto.  This amount shall include 100% of all
accrued and unpaid Annual Operating Fee, Reimbursable Costs and estimated future
Reimbursable Costs (as these terms are defined in the Plant O&M Agreement).
Assignor represents and warrants that (a) Schedule III hereto contains a good
faith estimate of all Reimbursable Costs for the period from October 1, 1999
through the Effective Date and (b) to the knowledge of Assignor, except for non-
material variances to the estimate described in (a) or liabilities relating to
the items listed on Schedule IV hereto, Assignor has not accrued, incurred or
become liable for any Reimbursable Cost or incurred any liabilities for which
Assignee or CPD may be responsible or liable.  For purposes of this Section, the
term "knowledge" shall mean, and be limited to, the actual knowledge of Dan
Brake, Production Assurance Manager, John Christensen, Accounting, Cliff
Townsley, Accounting, Mike Scott, Environmental, Carolyn Atwood, Environmental,
Diana Jackson, Human Resources, Debbie Nash, Human Resources, Chris Ellis,
Production Execution, Doug Brown, Production Execution, Rick Brown, Purchasing
Manager, Don Wells, Plant General Manager, and Don Blatchley, Production
Manager.

         In the event that such estimated future Reimbursable Costs are less
than the actual  Reimbursable Costs which are incurred by Assignor and Assignor
has not been reimbursed by Assignee or CPD for such costs, then on or before the
30/th/ day after the Effective Date, Assignee shall pay to Assignor such
difference.  Additionally, in the event that such estimated future Reimbursable
Costs are greater than the actual Reimbursable Costs which are incurred by
Assignor, and Assignor has been reimbursed by Assignee for such excess, then on
or before the 30/th/ day after the Effective Date, Assignor shall pay to
Assignee such excess.

     7.  TRANSFER OF EMPLOYEES:
         ---------------------

         Assignor agrees that Assignee shall have the right to offer employment
to any employee of Assignor who is employed by Assignor at the Navy II Project
at the Effective Date (a "Project Employee") on the terms determined by
Assignee; and Assignee agrees at the Effective Date to offer the Project
Employees employment on terms determined by Assignee and that no benefits of the
Project Employees shall carry over except for accrued vacation and seniority of
employment.

         Assignee agrees to give Assignor prompt written notice of all such
offers of employment that are made to the Project Employees and any that are
rejected.  Assignee agrees to reimburse Assignor for severance payments and
benefits (collectively, "Severance Benefits") agreed to be made by Assignor to
any Project Employee who is not offered comparable employment (including,
without limitation, comparable wages and benefits) at the Navy II

                                       3


Project. Assignor shall have discretion in determining the Severance Benefits to
be provided to the Project Employees provided that such Severance Benefits are
reasonably consistent with past practices of Assignor and its affiliates.
Additionally, if a Project Employee is employed by Assignee but is terminated by
Assignee without cause within six (6) months following the date of employment of
such Project Employee by Assignee, such Project Employee will be treated as a
Project Employee who was not offered employment by Assignee.

         Each request for reimbursement by Assignor in respect to a Project
Employee must only state (i) the identity of the Project Employee(s) who have
received or will receive such Severance Benefits, and (ii) in reasonable detail,
the amount of the Severance Benefits made or to be made to such Project
Employee(s) and, if applicable, include a copy of any agreement entered into by
such Project Employee(s) and Assignor with respect to termination of employment.
The reimbursement payment shall be made by CPD or Assignee within thirty (30)
days following receipt by Assignee of such written request.  Assignee agrees
that, with respect to any Project Employee in respect of which Assignee shall
pay or reimburse Assignor for Severance Benefits as described above, Assignee
shall also pay (or to the extent paid by Assignor or any affiliate of Assignor,
reimburse Assignor and its affiliates for) any taxes, or other costs, related to
such Severance Benefits and incurred by Assignor or its affiliates.

     8.  DELIVERY OF OPERATING DATA AND RECORDS:
         --------------------------------------

         On the Effective Date, Assignor agrees to deliver at the Navy II
Project the operating data and records, maintained pursuant to Section 2.5 of
the Plant O&M Agreement, to Assignee or to any individual or entity designated
by Assignee.

     9.  INDEMNITY:
         ---------

     Assignee and CPD agree to jointly and severally defend, indemnify and hold
harmless Assignor, any shareholder in Assignor and any of their respective
officers, directors, employees, agents, attorneys and affiliates (collectively,
the "Assignor Indemnified Parties") from and against, on a net after-tax basis,
and shall pay and reimburse the Assignor Indemnified Parties for, any loss, cost
or other expense that any such Assignor Indemnified Party incurs or suffers
arising out of any claim (a) made at any time after the Effective Date by any
person or entity against Assignor which relates to or arises out of any of the
project permits listed in Schedule I attached hereto or (b) which relates to or
arises out of any representation or warranty of Assignee herein not being true
and correct as and when made, or any agreement of Assignee in this Agreement or
the Plant O&M Agreement not being performed. Assignor shall give prompt written
notice to Assignee of any matter in respect of which indemnity may be sought
pursuant to this Section (provided that a failure to give timely notice shall
not affect rights to indemnification under this Section except to the extent
that Assignee or CPD has been damaged by such failure) and shall reasonably
cooperate with Assignee and CPD with respect to the resolution of any such
matter.

                                       4


     10.  BINDING EFFECT:
          --------------

          This Agreement shall be binding upon and inure to the benefit of the
parties hereto and their heirs, administrators, successors and assigns.

     11.  GOVERNING LAW:
          -------------

          This Agreement shall be governed by and construed in accordance with
the laws of the State of California applicable to contracts made and to be
performed wholly within the State and without reference to the choice of law
principles of the State of California or any other state.


  [Remainder of page intentionally left blank.  Next page is signature page.]

                                       5


     IN WITNESS WHEREOF, the undersigned have executed this instrument as of the
date first written above.

"Assignor"                       FPL ENERGY OPERATING SERVICES, INC.,
                                 a Florida corporation


                                 By:         /s/ James A. Keener
                                      ---------------------------------
                                      Name:  James A. Keener
                                      Title: Vice President


"Assignee"                       COSO OPERATING COMPANY LLC,
                                 a Delaware limited liability company


                                 By:         /s/ Christopher McCallion
                                      --------------------------
                                      Name:  Christopher McCallion
                                      Title: Executive Vice President
                                             and Chief Financial Officer

     The undersigned acknowledge the foregoing Agreement and specifically agree
to the provisions of this Agreement applicable to it.

"CPD"                            COSO POWER DEVELOPERS,
                                 a California general partnership

                                 By:  New CTC Company, LLC,
                                      a Delaware limited liability
                                      company,
                                      Its: Managing General Partner


                                      By:       /s/ Christopher McCallion
                                         --------------------------------------
                                         Name:  Christopher McCallion
                                         Title: Executive Vice President
                                                and Chief Financial Officer


"CTLP"                           COSO TRANSMISSION LINE PARTNERS,
                                 a California general partnership

                                 By:  Coso Energy Developers,
                                      a California general partnership,
                                      Its:  General Partner





                              By:  New Chip Company, LLC,
                                   a Delaware limited liability company,
                                   Its: Managing General Partner


                                    By:   /s/ Christopher McCallion
                                       ---------------------------------
                                       Name:  Christopher McCallion
                                       Title: Executive Vice President and
                                              Chief Financial Officer

                         By:  Coso Power Developers,
                              a California general partnership,
                              Its: General Partner

                              By:  New CTC Company, LLC,
                                   a Delaware limited liability company,
                                   Its: Managing General Partner


                                   By:   /s/ Christopher McCallion
                                       ---------------------------------
                                       Name:  Christopher McCallion
                                       Title: Executive Vice President and
                                              Chief Financial Officer




                                  Schedule I
                                      to
                 Assignment, Assumption and Novation Agreement

                                Project Permits
                                ---------------

     The following list identifies those permits and authorizations for which
FPL Energy Operating Services, Inc. was named as or identified as a plant
operator/1/:


     1.   California Regional Water Quality Board - Lahontan Region.

          (i)    Order No. 89-018, WDID No. 6B14402001

          (ii)   Order No. 6-89-58, WDID No. 6B148020013

          (iii)  Order No. 89-026, WDID No. 6B148020012

          (iv)   Order No. 89-161, WDID No. 6B148905001

     2.   California Energy Commission

          Small Power Plant Exemption Decision No. 88-SPPE-1C; Order No. 94-
          0413-04(a); and Order No. 88-0217-2(1)

     3.   Great Basin Unified Air Pollution Control District

     4.   Title V (Clean Air Act 42 U.S.C. (S)(S) 7401 et. seq.) permit
                                                       --
          application originally submitted May 1996.

                       [Air permits begin on next page.]

________________________

     /1/  In some cases, application has been made, but no permit has yet been
issued in the name of FPL Energy Operating Services, Inc.






                                NAVY 1 PROJECT
               ----------------------------------------------
                 Unit/Well No.                   ATC/PTO No.
               ----------------------------------------------
                                              
                     11-8                           235-4
               ----------------------------------------------
                     15-8                           194-7
               ----------------------------------------------
                     15A-8                          235
               ----------------------------------------------
                     16-8                           235-1
               ----------------------------------------------
                     16A-8                          345
               ----------------------------------------------
                     24-8                           402
               ----------------------------------------------
                     24B-8                          445
               ----------------------------------------------
                     31-8                           194-4
               ----------------------------------------------
                     34-9                           421
               ----------------------------------------------
                     34A-9                          728
               ----------------------------------------------
                     38-9                           685
               ----------------------------------------------
                     38A-9                          844
               ----------------------------------------------
                     38B-9                          893
               ----------------------------------------------
                     41A-8                          326
               ----------------------------------------------
                     47-8                           349
               ----------------------------------------------
                     47A-8                          362
               ----------------------------------------------
                     52-7                           344
               ----------------------------------------------
                     52A-7                          355
               ----------------------------------------------
                     52B-7                          656
               ----------------------------------------------
                     54-7                           353
               ----------------------------------------------
                     61-7                           356
               ----------------------------------------------
                     61A-7                          409
               ----------------------------------------------
                     61B-7                          710
               ----------------------------------------------
                     63-7                           317
               ----------------------------------------------
                     63A-7                          318
               ----------------------------------------------
                     63B-7                          386
               ----------------------------------------------
                     66-7                           443
               ----------------------------------------------
                     66A-7                          663
               ----------------------------------------------





                                NAVY 1 PROJECT
               ----------------------------------------------
                 Unit/Well No.                   ATC/PTO No.
               ----------------------------------------------
                                              
                     68-6                           779
               ----------------------------------------------
                     71-7                           194-5
               ----------------------------------------------
                     71A-7                          194-6
               ----------------------------------------------
                     71B-7                          309
               ----------------------------------------------
                     73-7                           314
               ----------------------------------------------
                     73A-7                          315
               ----------------------------------------------
                     75-7                           194
               ----------------------------------------------
                     75A-7                          194-1
               ----------------------------------------------
                     75B-7                          194-2
               ----------------------------------------------
                     76-7                           235-2
               ----------------------------------------------
                     76A-7                          235-3
               ----------------------------------------------
                     76B-7                          308
               ----------------------------------------------
                     77-7                           307
               ----------------------------------------------
                     78-6                           354
               ----------------------------------------------
                     78A-6                          405
               ----------------------------------------------
                     78B-6                          674
               ----------------------------------------------
                     87-7                           340
               ----------------------------------------------
                     87A-7                          621
               ----------------------------------------------
                 Gasoline Facility                  689
               ----------------------------------------------
                 Units 1, 2 & 3                  234,320,341
               ----------------------------------------------





                               NAVY 2 PROJECT
                ----------------------------------------------
                Unit/Well No.                     ATC/PTO No.
               ----------------------------------------------
                                               
                     13-16                            368
               ----------------------------------------------
                     14-16                            645
               ----------------------------------------------
                     15-17                            363
               ----------------------------------------------
                     15A-17                           417
               ----------------------------------------------
                     22-16                            667
               ----------------------------------------------
                     23-17                            480
               ----------------------------------------------
                     23A-17                           714
               ----------------------------------------------
                     37-17                            370
               ----------------------------------------------
                     37A-17                           415
               ----------------------------------------------
                     37B-17                           416
               ----------------------------------------------
                     51-16                            715
               ----------------------------------------------
                     51A-16                           740
               ----------------------------------------------
                     58-18                            463
               ----------------------------------------------
                     63-18                            298
               ----------------------------------------------
                     63A-18                           413
               ----------------------------------------------
                     63B-18                           414
               ----------------------------------------------
                     64-16                            448
               ----------------------------------------------
                     64A-16                           478
               ----------------------------------------------
                     65-18                            475
               ----------------------------------------------
                     65A-18                           479
               ----------------------------------------------
                     67-17                            364
               ----------------------------------------------
                     67B-17                           771
               ----------------------------------------------
                     67C-17                           885
               ----------------------------------------------
                     72-18                            371
               ----------------------------------------------
                     72A-18                           400
               ----------------------------------------------
                     72B-18                           401
               ----------------------------------------------
                     72C-18                           491
               ----------------------------------------------
                     73-18                            369
               ----------------------------------------------





                               NAVY 2 PROJECT
               ------------------------------------------------
                 Unit/Well No.                 ATC/PTO No.
               ------------------------------------------------
                                            
                    73A-18                         391
               ------------------------------------------------
                     76-18                         482
               ------------------------------------------------
                     76A-18                        490
               ------------------------------------------------
                     76B-18                        682
               ------------------------------------------------
                     78-7                          359
               ------------------------------------------------
                     81-18                         476
               ------------------------------------------------
                     81A-18                        894
               ------------------------------------------------
                     83-16                         635
               ------------------------------------------------
                     83A-16                        683
               ------------------------------------------------
                     83B-16                        690
               ------------------------------------------------
                     86-17                         665
               ------------------------------------------------
                 Units 4, 5 & 6                468, 471 & 470
               ------------------------------------------------





                                BLM PROJECT
               ----------------------------------------------
                  Unit/Well No.              ATC/PTO No.
               ----------------------------------------------
                                          
                     16-20                       646
               ----------------------------------------------
                     16A-20                      673
               ----------------------------------------------
                     16B-20                      697
               ----------------------------------------------
                     23-19                       375
               ----------------------------------------------
                     23A-19                      789
               ----------------------------------------------
                     24-20                       322
               ----------------------------------------------
                     24A-20                      351
               ----------------------------------------------
                     24B-20                      378
               ----------------------------------------------
                     24C-20                      397
               ----------------------------------------------
                     32-20                       436
               ----------------------------------------------
                     32A-20                      450
               ----------------------------------------------
                     33-19                       288
               ----------------------------------------------
                     33A-19                      696
               ----------------------------------------------
                     33B-19                      834
               ----------------------------------------------
                     34-20                       432
               ----------------------------------------------
                     34A-20                      444
               ----------------------------------------------
                     35-20                       424
               ----------------------------------------------
                     35A-20                      423
               ----------------------------------------------
                     35B-20                      422
               ----------------------------------------------
                     43-7                        903
               ----------------------------------------------
                     46-19                       768
               ----------------------------------------------
                     46A-19                      774
               ----------------------------------------------
                     47-20                       434
               ----------------------------------------------
                     47A-20                      451
               ----------------------------------------------
                     47B-20                      785
               ----------------------------------------------
                     52-20                       775
               ----------------------------------------------
                     58A-18                      737
               ----------------------------------------------
                     58B-18                      895
               ----------------------------------------------





                               BLM PROJECT
               --------------------------------------------
                 Unit/Well No.              ATC/PTO No.
               --------------------------------------------
                                         
                     66-6                       904
               --------------------------------------------
                     68-20                       323
               --------------------------------------------
                     68A-20                      404
               --------------------------------------------
                     68B-20                      459
               --------------------------------------------
                     72A-19                      287
               --------------------------------------------
                     72B-19                      372
               --------------------------------------------
                     73-19                       289
               --------------------------------------------
                     74-19                       431
               --------------------------------------------
                     74A-19                      449
               --------------------------------------------
                     74B-19                      469
               --------------------------------------------
                     81-19                       439
               --------------------------------------------
                     81A-19                      461
               --------------------------------------------
                     81B-19                      738
               --------------------------------------------
                     88-1                        905
               --------------------------------------------
                     88-20                       504
               --------------------------------------------
                 units 7, 8 & 9             379, 380, 457
               --------------------------------------------




                          BLM NORTH
               ----------------------------------------------
                  Unit/Well No.                 ATC/PTO No.
               ----------------------------------------------
                                             
                     58A-18                         737
               ----------------------------------------------
                     58B-18                         895
               ----------------------------------------------
                     43-7                           903
               ----------------------------------------------
                     66-6                           904
               ----------------------------------------------
                     88-1                           905
               ----------------------------------------------
                     43A-7                          966
               ----------------------------------------------



                                  Schedule II
                                      to
                 Assignment, Assumption and Novation Agreement

                                Closing Payment
                                ---------------




Time and Benefits:
- ----------------------------
                                                                                     
 Wells, Don                      $    31,993.54       Plant Management
 Atwood, Carol                         3,447.49       Environmental Services
 McCloud                               3,355.64       30 hrs transition work planning
                                                      coordination of personnel
 Christensen, John                    12,716.28       Accounting, Business Processes
 Brownlee                                912.56       HR
 Waldon                                2,184.93       Miscellaneous Administrative
 Walker                                5,250.87       Payroll & Benefits processing,
                                                      reporting
 Bazata, Jaimie                          742.71       Cash Mgmt, Bank Recs, Funding,
                                                      Bookkeeping
 Brownlee                             11,200.00       Human Resources Setup Mar/Apr           160 hrs @
                                                                                              $70
 Daly                                  9,000.00       Human Resources Setup Mar/Apr           200 hrs @
                                                                                              $45
 OSI Employees                         3,500.00       Humes, Freilley, Hansen, Talovich       100 hrs @
                                                      Generator                               $35

 Pre-employment costs:

   Vendor:  S.A.S.S.                   1,760.00
   Vendor:  RSI                          804.00
   Vendor:  BMS Consulting             3,879.55
   Vendor:  Pembrook                   3,645.00
                                 --------------
 Totals                               94,392.57

Expenses:
- ----------------------------


 Travel & Meals:
 Travel                         $      6,669.88
 Meals                                   773.91
 Invoice # 1st Qtr 1999                5,927.15       Per Invoice
 Invoice # 4829-09                     2,092.51       Per Invoice
                                 --------------
 Total Travel & Meals                 15,463.45

 Other Expenses:
 Office expenses                           9.10
 Freight                                 818.45
 Computer equipment                           -
 Computer software                       100.17
 Telephone                               769.51
 Cellular telephone                      148.65
 Outside services:                            -
   Ronald Reagan                       2,330.65       Unit 1 failure




                                                
   David Brown                           272.00       Unit 1 failure
   Ronald Johnsen                        900.00       Unit 1 failure
   Gary Griffith                       3,075.00       Unit 1 failure
   M E Thomaston                       6,324.00       Protection and Controls work
   Robert Doyle                        5,332.00       Protection and Controls work
                                   ------------
Total Other Expenses                  20,079.53

O&M Fee:
 CED                                  79,655.56       214 days March 1-Oct 1, 1999
 CFP                                  79,655.56       214 days March 1-Oct 1, 1999
 CPD                                  79,655.56       214 days March 1-Oct 1, 1999
                                   ------------
                                     238,967.00

Amounts paid                       $ (10,664.55)
Payroll paid for 10/8              $(254,151.74)
 paydate

                                   ------------
Total Amount Through               $ 104,085.92
 October 1, 1999

Estimated Reimbursables
 Oct 1 - Oct 17, 1999                560,055.14       From Schedule III
                                   ------------

Total Amount
 Transferred at Closing:             664,141.07
                                   ============
 


                                 Schedule III
                                      to
                 Assignment, Assumption and Novation Agreement

                            All Reimbursable Costs
                            ----------------------



Payroll & Benefits
                                                                                     
 Estimated Charges Pending:
   Accounting                                5,695.00                                         General Bookkeeping Cash
                                                                                              Mgmt etc.
   Other West Regional Office               10,500.00            150 hrs @ $70                Production Assurance, Env,
                                                                                              Safety etc.
   Wells                                     8,960.00            112 hrs @ $80                PGM time
   Site Payroll                            254,151.74            Includes Benefit             Actual for 10/8 Paydate
                                                                 Premiums
   Site Payroll                            255,000.00            Includes Benefit             Estimate for Paydate
                                                                 Premiums                     10/22
                                           ----------
                                           534,306.74

Travel & Meals
 HR/IM/Environmental Travel                    750.00
 Wells                                         347.57
 Wells-Apt                                   5,167.50            6.5 months @
                                                                 $795/month
                                           ----------
                                             6,265.07

Bank Charges                                   500.00

O&M Fee:
 CED                                         6,327.78            17 days October 1, 1999 -
                                                                 October 17, 1999
 CFP                                         6,327.78            17 days October 1, 1999 -
                                                                 October 17, 1999
 CPD                                         6,327.78            17 days October 1, 1999 -
                                                                 October 17, 1999
                                           ----------
                                            18,983.33

                                           560,055.14
                                           ==========



                                  Schedule IV
                                      to
                 Assignment, Assumption and Novation Agreement

               Events From Which Potential Liabilities May Arise
               -------------------------------------------------

1. The H2S venting event which occurred on April 20, 1999 and was reported to
   the Great Basin Air Pollution Control District ("GBAPCD").

2. The H2S venting event which occurred on June 8, 1999 and was reported to
   GBAPCD.

3. The H2S venting event which occurred on September 15, 1999 and was reported
   to GBAPCD.

4. The release of H2S04 to surface soils and the inside tank contamination which
   occurred on August 10, 1999 and was reported to NAS Geothermal Project
   Office.

5. All other H2S venting events which occurred during the operation of the
   Projects by FPLEOS and were reported to GBAPCD using Release Notification
   Forms.

6. Liabilities associated with the repair, operation, or maintenance of the
   repaired Navy I Project generator stator.

7. Liabilities associated with the repair, operation, or maintenance of the
   modified Fuji turbine rotors.


                                  EXHIBIT A-1

                      GENERAL RELEASE (FPLEOS - NAVY II)

     FOR GOOD AND VALUABLE CONSIDERATION, THE RECEIPT AND ADEQUACY OF WHICH ARE
HEREBY ACKNOWLEDGED, the undersigned hereby does release and forever discharge
Coso Operating Company LLC ("COC"), Coso Transmission Line Partners ("CTLP")
and Coso Power Developers ("CPD"), and all of their owners, members, partners,
shareholders, affiliates, directors, officers, employees and agents
(collectively, the "Releasees") from any and all claims, demands, obligations,
liabilities and causes of action of every nature whatsoever with respect to that
certain Operation and Maintenance Agreement for Navy II Project (the "Plant O&M
Agreement"), dated as of May 28, 1999, including, without limitation, any
liability to FPL Energy Operating Services, Inc. ("FPLEOS") for any prior
performance, past or future non performance, act or omission under or with
respect to the Plant O&M Agreement, all environmental related liabilities and
Y2K related liabilities with respect to the Facility, the Facility Site (as
defined in the Plant O&M Agreement) or otherwise from the beginning of time
through the end of the world, except for (i) Section 9.2.1 of the Plant O&M
Agreement and (ii) the specific agreements set forth in the Assignment,
Assumption and Novation Agreement, dated as of October __, 1999, by and between
FPLEOS and COC.

     As to all claims to be released pursuant to this Release, FPLEOS hereby
expressly waives any right or benefit available to it under the provisions of
Section 1542 of the California Civil Code, which provides:

          "A general release does not extend to claims which the creditor does
          not know or suspect to exist in his favor at the time of executing the
          release, which if known by him must have materially affected his
          settlement with the debtor."

     Additionally, FPLEOS expressly waives any such right or benefit available
under comparable provisions of any other state or federal law.

                                      A-1


   IN WITNESS WHEREOF, the undersigned has executed and delivered this Release
as of the __ day of October, 1999.


                         FPL ENERGY OPERATING SERVICES, INC.,
                         a Florida corporation


                         By:  ---------------------------
                              Name:
                              Title:

                                      A-2


                                  EXHIBIT A-2

                 GENERAL RELEASE (COC, CTLP AND CPD - NAVY II)

     FOR GOOD AND VALUABLE CONSIDERATION, THE RECEIPT AND ADEQUACY OF WHICH ARE
HEREBY ACKNOWLEDGED, the undersigned hereby do release and forever discharge FPL
Energy Operating Services, Inc. ("FPLEOS"), and all of its owners, members,
partners, shareholders, affiliates, directors, officers, employees and agents
(collectively, the "Releasees") from any and all claims, demands, obligations,
liabilities and causes of action of every nature whatsoever with respect to that
certain Operation and Maintenance Agreement for Navy II Project (the "Plant O&M
Agreement"), dated as of May 28, 1999, including, without limitation, any
liability to Coso Power Developers ("CPD"), Coso Transmission Line Partners
("CTLP") or Coso Operating Company LLC ("COC") for any prior performance,
past or future non performance, act or omission under or with respect to the
Plant O&M Agreement, all environmental related liabilities and Y2K related
liabilities with respect to the Facility, the Facility Site (as defined in the
Plant O&M Agreement) or otherwise from the beginning of time through the end of
the world, except for the specific agreements set forth in the Assignment,
Assumption and Novation Agreement, dated as of October __, 1999, by and between
FPLEOS and COC.

     As to all claims to be released pursuant to this Release, COC, CTLP and CPD
hereby expressly waive any right or benefit available to it under the provisions
of Section 1542 of the California Civil Code, which provides:

          "A general release does not extend to claims which the creditor does
          not know or suspect to exist in his favor at the time of executing the
          release, which if known by him must have materially affected his
          settlement with the debtor."

     Additionally, COC, CTLP and CPD expressly waive any such right or benefit
available under comparable provisions of any other state or federal law.

                                      A-3


     IN WITNESS WHEREOF, the undersigned have executed and delivered this
Release as of the __ day of October, 1999.


                              COSO OPERATING COMPANY LLC,
                              a Delaware limited liability company


                              By: ______________________________
                                  Name:
                                  Title:

                              COSO POWER DEVELOPERS,
                              a California general partnership

                              By: New CTC Company, LLC,
                                  a Delaware limited liability company,
                                  Its:  Managing General Partner


                                  By:___________________________
                                      Name:
                                      Title:

                              COSO TRANSMISSION LINE PARTNERS,
                              a California general partnership

                              By: Coso Energy Developers,
                                  a California general partnership,
                                  Its:  General Partner

                                   By:  New Chip Company, LLC,
                                        a Delaware limited liability company,
                                        Its:  Managing General Partner


                                        By:  _____________________
                                             Name:
                                             Title:

                                     A-4


                                 By:  Coso Power Developers,
                                      a California general partnership,
                                      Its: General Partner

                                      By:  New CTC Company, LLC,
                                           a Delaware limited liability company,
                                           Its:  Managing General Partner


                                           By:  _______________________
                                                Name:
                                                Title:

                                      A-5