UNITED STATES 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): November 9, 2004


                               CALPINE CORPORATION
                            (A Delaware Corporation)

                        Commission file number: 001-12079

                  I.R.S. Employer Identification No. 77-0212977

                           50 West San Fernando Street
                           San Jose, California 95113
                            Telephone: (408) 995-5115

     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))




ITEM 8.01 -- OTHER EVENTS.


     On  November  9,  2004,  Calpine  Corporation  (the  "Company")  filed  its
Quarterly  Report on Form 10-Q for the  quarter  ended  September  30, 2004 (the
"Report") with the Securities and Exchange  Commission.  The document  listed as
Exhibit  99.1  to  the  Report  was  inadvertently  omitted  from  such  filing.
Accordingly,  the Company is filing such  document as Exhibit  99.1 to this Form
8-K.


ITEM 9.01  FINANCIAL STATEMENTS AND EXHIBITS


(a) Financial Statements of Businesses Acquired.


     Not  Applicable


(b) Pro Forma Financial Information.


     Not  Applicable


(c) Exhibits.


     99.1 Term  Debenture,  issued August 23, 2001, by Calpine Canada  Resources
          Ltd., to Calpine Canada Energy Finance II ULC.




                                   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 hereunto duly authorized.

                                  CALPINE CORPORATION

                                  By:  /s/ Charles B. Clark, Jr.
                                       ------------------------------------
                                       Charles B. Clark, Jr.
                                       Senior Vice President and Controller
                                       Chief Accounting Officer

Date: November 10, 2004


                                 EXHIBIT INDEX

 Exhibit    Description
 -------   -------------
   99.1    Term  Debenture,  issued August 23, 2001, by Calpine Canada Resources
           Ltd., to Calpine Canada Energy Finance II ULC.





EXHIBIT 99.1

                                                                  Execution Copy



                                 TERM DEBENTURE




        CALPINE CANADA RESOURCES LTD., a corporation subsisting under the
               laws of the Province of Alberta, Canada ("Issuer")

(pound)275,000,000
Due:  April 25, 2021

     THIS DEBENTURE is issued this 23rd day of August, 2001 by the Issuer, whose
principal office or place of business is located at Suite 1000, 350 - 7th Avenue
S.W.,  Calgary,  Alberta,  to Calpine Canada Energy Finance II ULC, an unlimited
liability company  subsisting under the laws of the Province of Nova Scotia (the
"Holder") with a registered  office at Suite 800,  Purdy's Wharf Tower One, 1959
Upper Water Street, P.O. Box 997, Halifax, Nova Scotia.

     WHEREAS this  Debenture is issued to Calpine  Canada Energy Finance II ULC,
the initial Holder, as consideration for an advance made by Holder to Issuer for
general corporate purposes;

     AND WHEREAS it is intended that this Debenture may be used by the Holder to
arrange its financing and may be held by the Holder, or sold, assigned,  pledged
as security from time to time by the Holder,  (or otherwise  used or transferred
by the Holder) in connection with the Holder's financing activities;

     NOW  THEREFORE  for  good  and  valuable  consideration  (the  receipt  and
sufficiency   of  which  is  hereby   acknowledged),   the   Issuer   covenants,
acknowledges, represents and warrants as follows:

                                    ARTICLE 1
                                 INTERPRETATION

1.1  Definitions

Each word and  phrase  with  initial  capitals  used in this  Debenture  has the
meaning assigned to it in Schedule "A".

1.2  Statutes

A reference in this Debenture to a statute refers to that statute as it may be
amended from time to time, and to any restated or successor legislation of
comparable effect.

1.3  Generally Accepted Accounting Terms

Where the Canadian Institute of Chartered  Accountants includes a recommendation
in its  Handbook  concerning  the  treatment  of  any  accounting  matter,  such
recommendation  shall be  regarded  as the only  generally  accepted  accounting
principle  applicable to the circumstances  that it covers and references herein
to generally accepted accounting principles shall be interpreted accordingly.

1.4  Headings

The division of this Debenture into  Articles,  Sections,  and Schedules and the
insertion of headings are for convenience of reference only and shall not affect
the construction or interpretation of this Debenture.  The Article,  Section and
Schedule  headings  in this  Debenture  are not  intended  to be full or precise
descriptions of the text to which they refer and shall not be considered part of
this Debenture.


                                      -2-

1.5  Number and Gender

In this Debenture,  words in the singular  include the plural and vice versa and
words in one gender include all genders.

1.6  Currency

All sums of money payable under this  Debenture  shall be  denominated in Pounds
Sterling.

1.7  Schedules

The following Schedules are incorporated into and form part of this Debenture:

        SCHEDULE          DESCRIPTION
        --------          ------------
           A              Definitions
           B              Interest Rate Determinations


                                    ARTICLE 2
                               DEBENTURE PAYMENTS

2.1  Promise to Pay

The Issuer hereby acknowledges itself indebted to the Holder and:

     (a)  promises to pay the Holder,  by  certified  cheque  (unless  otherwise
          directed by the  Holder)  payable to or to the order of the Holder and
          delivered to the address of the Holder shown in the  Register,  on the
          Maturity Date (or on such earlier date as the  principal  indebtedness
          hereby  evidenced  may  become  payable in  accordance  with the terms
          hereof) the principal sum of (pound)275,000,000 (as restated from time
          to time pursuant to Section 2.4, the "Principal Amount"); and

     (b)  promises  to pay  interest  thereon to  Holder,  at the rate per annum
          equal to the  Interest  Rate in effect from time to time,  both before
          and after  maturity,  default or judgment,  together  with interest on
          overdue  interest  at the same rate,  provided  that the amount of any
          such interest obligation payable on any Interest Payment Date shall be
          rounded down to the next whole pound.

Without limiting the Issuer's payment  obligation,  the Holder of this Debenture
may demand payment of the Principal Amount by presenting and  surrendering  this
Debenture on the Maturity Date (or on any earlier date the Principal  Amount may
become payable in accordance  with the terms hereof) at the office of the Issuer
in the City of  Calgary,  Alberta,  specified  in Section 7.3 hereof (or at such
other place in Canada as the Issuer may designate  from time to time by five (5)
Business Days written notice to the Holder),  or may demand payment in any other
manner  permitted  by  applicable  law.  Interest  shall accrue on a daily basis
(without  compounding  unless  interest is overdue) and shall be calculated  and
payable in arrears on the following  dates (each,  an "Interest  Payment Date"):
(I) on the last  Business  Day of each  Interest  Period  (with the  first  such
payment of interest  becoming  due and payable on the last  Business  Day of the
first Interest Period of this  Debenture);  and (II) on such earlier date as the
Principal  Amount shall be repaid in full in  accordance  with the terms hereof.
Interest  hereon shall be paid in cash by wire  transfer or  uncertified  cheque
payable  on the  Interest  Payment  Date  to the  Holder,  in  the  case  of any
uncertified  cheque,  mailed to the  Holder's  address as shown on the  Register
three (3) Business Days prior to the relevant Interest Payment Date.


                                      -3-

2.2  Interest Reset

The Holder may, from time to time, on notice (each,  an "Interest Reset Notice")
delivered  to the  Issuer at least  ninety  (90) days and not more than 120 days
prior to the Initial  Reset Date or next Reset Date,  as the case may be, advise
the Issuer  that,  effective  on the Initial  Reset Date or next Reset Date,  as
applicable,  the  Interest  Rate shall be  calculated  using the Premium and the
Reference  Rate  proposed  in such  Interest  Reset  Notice,  which  Premium and
Reference Rate shall be selected in the Holder's sole discretion.  Not less than
ten (10)  Business  Days prior to such Reset Date,  the Issuer  shall advise the
Holder in writing  (each,  an  "Interest  Advisory  Notice")  if the Premium and
Reference  Rate stated in the relevant  Interest  Reset Notice are acceptable to
the Issuer. If the Issuer:

     (a)  delivers an Interest Advisory Notice to the Holder in which the Issuer
          agrees to accept such  proposed  Premium  and  Reference  Rate,  then,
          effective  the Initial  Reset Date or next Reset Date, as the case may
          be, this Debenture shall be and be deemed to be amended to replace the
          former  Interest  Rate with the  Interest  Rate arrived at by applying
          such proposed Premium and Reference Rate and the Holder and the Issuer
          shall forthwith  execute all such documents and do or cause to be done
          all such further acts and things as may be necessary to evidence  such
          amendment;

     (b)  delivers an Interest Advisory Notice to the Holder in which the Issuer
          advises  the  Holder  that it does not agree to accept  such  proposed
          Premium or Reference  Rate,  then the Issuer shall,  on the Reset Date
          next  following  the delivery of the relevant  Interest  Reset Notice,
          repay the Principal Amount and all interest  accrued thereon,  without
          penalty, as is set forth in Section 2.3 hereof; or

     (c)  fails to  deliver  an  Interest  Advisory  Notice  at  least  ten (10)
          Business  Days prior to the Initial  Reset Date or next Reset Date, as
          applicable,  the Issuer shall be deemed to have accepted such proposed
          Premium and Reference  Rate, and this Debenture  shall,  effective the
          Initial Reset Date or next Reset Date, as applicable, be and be deemed
          to be amended to replace the former  Interest  Rate with the  Interest
          Rate arrived at by applying such proposed  Premium and Reference Rate,
          and the  Holder  and the  Issuer  shall  forthwith  execute  all  such
          documents  and do or cause to be done all such further acts and things
          as may be necessary to evidence such amendment.

2.3  Prepayment Right

The Issuer shall,  if the Issuer receives an Interest Reset Notice which it does
not accept,  prepay all (but not less than all) of the  Principal  Amount to the
Holder (the "Prepayment Right") on the Initial Reset Date or next Reset Date, as
applicable.  The Issuer shall be deemed to have exercised the  Prepayment  Right
if, as provided for in Section 2.2(b),  the Issuer  delivers,  at least ten (10)
Business  Days in advance of the Initial  Reset Date or next Reset Date,  as the
case may be, an  Interest  Advisory  Notice  (in this  Section  the  "Prepayment
Notice") to the Holder pursuant to Section 2.2(b) rejecting the proposed Premium
and Reference Rate;  such Prepayment  Notice shall be deemed to provide that the
Issuer  irrevocably elects to exercise the Prepayment Right. Upon such election,
the Issuer  shall be  obligated  to pay the  Principal  Amount  and all  accrued
interest (but no amount on account of Holder's  breakage costs or other costs or
expenses  arising from  prepayment)  to the Holder on the Initial  Reset Date or
next Reset Date, as the case may be.  Except as set out above,  the Issuer shall
not prepay the Principal Amount without Holder's consent.

2.4  Partial Prepayment

If the Issuer is permitted by Holder to make a partial  prepayment of Principal,
the Principal Amount of this Debenture shall,  upon receipt by the Holder of the
amount being prepaid (the "Prepayment Amount"), be automatically restated at the
date of prepayment (the "Prepayment Date") to be an amount equal to the original
Principal Amount less the Prepayment  Amount (the "Restated  Principal  Amount")
and the Issuer shall forthwith record such prepayment and the Restated Principal
Amount in the Register. The Holder


                                      -4-

shall deliver this  Debenture to the Issuer on or as soon as  practicable  after
the Prepayment Date and the Issuer shall, in exchange therefor, issue a restated
Debenture to the Holder reflecting the Restated Principal Amount;  such restated
Debenture   shall   represent  the   continuation  of  this  Debenture  and  the
indebtedness  hereby except that the  Principal  Amount owing under the restated
Debenture shall be the Restated Principal Amount.

                                    ARTICLE 3
                         REPRESENTATIONS AND WARRANTIES

The Issuer  represents  and warrants to and in favour of the Holder that, on the
date of this Debenture:

3.1  Incorporation

The  Issuer  is a  corporation  duly  organized,  validly  existing  and in good
standing under the laws of its jurisdiction of organization,  and no proceedings
for the  liquidation,  dissolution  or winding  up of the Issuer are  pending or
contemplated by the Issuer.

3.2  Corporate Power

The Issuer has the power, capacity, legal right and authority, and has taken all
necessary corporate action, to issue and perform this Debenture.

3.3  Licenses

The Issuer has all necessary  power,  capacity,  legal right and authority,  and
holds all material licenses,  permits and consents which it requires, to own its
property and to carry on its current business in each relevant jurisdiction,  in
each case,  where the failure to hold such licenses,  permits and consents would
cause a material adverse effect to the business and operations of the Issuer.

3.4  No Conflict

Neither the issuance nor the performance of this Debenture requires the approval
of any regulatory  agency having  jurisdiction over the Issuer where the failure
to obtain such  approval  would be  materially  prejudicial  to the  enforcement
hereof,  nor is this  Debenture  in  contravention  of or in  conflict  with the
constating  documents or  resolutions  of the directors or  shareholders  of the
Issuer or of the  provisions  of any Agreement to which the Issuer is a party or
by which any of its property may be bound or of any statute, regulation, by-law,
ordinance or other law where such  contravention or conflict would be materially
prejudicial to the enforcement hereof, or of any judgment, decree, award, ruling
or order to which the Issuer or any of its property  may be subject,  where such
contravention  or conflict would be materially  prejudicial  to the  enforcement
hereof.  No such action will oblige the Issuer to grant any  Encumbrance  to any
Person other than the Holder.

3.5  No Default

To the best knowledge of the Issuer, the Issuer is not in breach of any material
Agreement to which it is a party.

3.6  Enforceability

This Debenture  constitutes a valid and legally binding obligation of the Issuer
enforceable  against the Issuer in  accordance  with its terms,  subject only to
bankruptcy,  insolvency or other  statutes or judicial  decisions  affecting the
enforcement of creditors' rights in general, and to general principles of equity
under which specific performance and injunctive relief may be refused by a court
in its discretion.


- -5-

3.7  Financial Information

In all written  information and financial  statements supplied by the Issuer for
the  benefit  of the  Holder,  the Issuer  has made no untrue  statement  of any
material  fact and has  revealed all  material  facts of which it is aware,  the
omission of which would make such  information  and statements  misleading.  The
Issuer has disclosed all facts which  materially  adversely affect the business,
properties,  prospects or financial  condition of the Issuer,  or the ability of
the Issuer to perform its obligations hereunder.  All accounting information and
financial  statements of the Issuer  supplied for the benefit of the Holder have
been prepared in accordance with generally accepted accounting principles.

3.8  No Actions

There are no material actions, suits or judicial or arbitral proceedings pending
or, to the knowledge of the Issuer,  threatened  against the Issuer in any court
or other authority  which the Issuer expects would result in a material  adverse
change in the business or financial condition of the Issuer.

3.9  Compliance with Laws

The Issuer is not in breach of any material by-law,  law,  statute,  regulation,
rule or order,  of any  authority  relating in any way to the  operation  of its
business,  except where such breach would not have a material  adverse effect on
the business and affairs of the Issuer.

3.10 Judgments and Executions

There are no  material  judgments  or  executions  filed or pending  against the
Issuer.

3.11 Insolvency Proceedings

The Issuer has not made any general  assignment for the benefit of creditors nor
has any  receiving  order  been  made  against  it under the  provisions  of the
Bankruptcy  and  Insolvency  Act (Canada) (or any analogous  legislation  in any
other jurisdiction),  nor has any petition for such an order been served upon it
nor are there any  proceedings  in effect under the provision of the  Winding-Up
Act  (Canada) or the  Companies'  Creditors  Arrangement  Act  (Canada)  (or any
analogous  legislation  in  any  other  jurisdiction),  nor  has  any  Receiver,
administrator, monitor, custodian or official with similar powers been appointed
by court  order or  privately  respecting  the  Issuer  or any of its  assets or
property.

3.12 Taxation Procedures

The Issuer has duly and timely filed all tax returns required to be filed by it,
and has,  other than such Taxes as are being  contested in good faith,  paid all
Taxes which are due and payable  where the failure to make such  payments  would
cause a material adverse effect to the business or operations of the Issuer. The
Issuer has paid all assessments and  reassessments,  and all other  governmental
charges,  governmental royalties,  penalties, interest and fines claimed against
it on or before the date hereof other than such payments as are being  contested
in good faith. Adequate provision and installment payments have been made by the
Issuer for Taxes and governmental  royalties  payable for the current period for
which returns are not yet required to be filed. There are no agreements, waivers
or other  arrangements  providing  for an  extension of time with respect to the
filing of any tax  return by, or payment  of, any Taxes,  governmental  charges,
governmental royalties or deficiency against the Issuer.

3.13 Material Liabilities

To the knowledge of the Issuer, there are no material liabilities of the Issuer,
whether or not accrued and whether or not determined or determinable, in respect
of which the Issuer is liable on the date of this Debenture  which are not fully
and properly  reflected in the financial  information of the Issuer delivered to
the Holder or of which the Holder is not aware.


                                      -6-

3.14 Intellectual Property

The Issuer owns or holds all material licenses, patents, trademarks,  copyright,
industrial design, know how, trade secrets and other industrial and intellectual
property  reasonably  necessary  for the  conduct of its  business  and all such
licenses are in good standing.

3.15 Reliance and Survival

All  representations  and  warranties  of  the  Issuer  made  herein  or in  any
certificate  or other  document  delivered by or on behalf of the Issuer for the
benefit of the Holder  shall  survive the issuance of this  Debenture  and shall
continue in full force and effect until the  Obligations are discharged in full.
The Holder  shall be deemed to have  relied  upon each such  representation  and
warranty notwithstanding any investigation made by or on behalf of the Holder at
any time.

                                    ARTICLE 4
                             COVENANTS OF THE ISSUER

4.1  Conduct of Business

The Issuer  shall  diligently  conduct its  business  in a proper and  efficient
manner so as to preserve and protect its business and assets.

4.2  Register of Holders

The Issuer shall, as part of its corporate records in its minute books, cause to
be kept a register of Holders (the "Register") at the place where the Issuer may
from time to time keep its  minute  book as  required  by  applicable  law.  The
register shall contain all particulars  concerning the Debenture and the Holders
as are required by applicable law or this Debenture, including the name and last
known address of each Holder, the principal amount  outstanding  hereunder and a
record of all sales,  transfers  and  assignments  (whether  absolute or for the
purpose of giving security) of this Debenture,  in whole or in part. The initial
registered Holder shall be Calpine Canada Energy Corp.

4.3      Books of Account

The Issuer shall keep proper books of account in accordance with generally
accepted accounting principles and, provided that the Holder shall treat all
such information as confidential and proprietary to the Issuer and shall not
disclose such information to any Person (except to a governmental authority or
judicial or quasi-judicial body having jurisdiction over the Holder or the
Issuer on an as required basis or to an actual or potential assignee or
purchaser of this Debenture on a need to know basis after obtaining such
Person's agreement to treat such information as confidential and proprietary to
the Issuer), the Issuer shall:

     (a)  furnish to the Holder all information  and statements  relating to its
          business which the Holder reasonably requests; and

     (b)  permit the Holder or its  authorized  agent at any time to have access
          to all  premises  occupied by the Issuer in order to examine the books
          of account and other  financial  records and reports of the Issuer and
          to have  temporary  custody of, make copies of and take  extracts from
          such books, records and reports.

4.4  Taxes

The Issuer shall pay all material  Taxes when due,  other than such  payments as
are, at the relevant time, being contested in good faith.


                                      -7-

4.5  Further Assurances

The Issuer shall at all times do,  execute,  acknowledge and deliver or cause to
be done,  executed,  acknowledged  or delivered  all such further  acts,  deeds,
transfers,  mortgages,  pledges and charges,  security agreements,  assignments,
debentures and assurances as the Holder may reasonably  require in order to give
effect to the provisions of this Debenture.

4.6  Amalgamation

The Issuer shall not effect any  amalgamation,  merger or statutory  arrangement
with any  Person  (other  than an  affiliate  of the Issuer as  provided  in the
Business  Corporations  Act (Alberta))  without the prior written consent of the
Holder, which consent shall not be unreasonably withheld.

4.7  Costs

The Issuer  shall pay,  or  forthwith  on demand  reimburse,  the Holder for all
reasonable  interest,  commissions,  costs of  realization  and other  costs and
expenses  (including  legal fees and expenses on a solicitor  and his own client
scale)   incurred  by  the  Holder  or  any  Receiver  in  connection  with  the
preparation,  issuance,  protection,  enforcement  of and advice with respect to
this Debenture.

4.8  Reimbursements as Obligations

All amounts for which the Issuer is required  hereunder to reimburse  the Holder
or any Receiver shall,  from the date of disbursement  until the date the Holder
or such Receiver receives reimbursement, be deemed advanced to the Issuer by the
Holder,  shall be deemed to be  Obligations  and shall bear  interest,  accruing
daily, at the rate then applicable to the Principal Amount.

4.9  General Indemnity

The Issuer will  indemnify the Holder and save it fully harmless of and from all
loss, cost, damage,  expense,  claims and liability which it may suffer or incur
in  connection  with (i) the  exercise by the Holder of its  remedies and powers
hereunder,  (ii) any  breach  of the  representations  or  warranties  contained
herein,  or (iii) any failure by the Issuer to perform any of its  covenants  or
obligations under this Debenture.

4.10 Financial Statements

The Issuer shall furnish or shall cause to be furnished to the Holder:

     (a)  within  ninety  (90) days after the end of each of its  fiscal  years,
          financial statements as follows:

          (i)  an audited  unconsolidated  balance sheet, prepared in accordance
               with Canadian generally accepted accounting principles applied on
               a consistent basis, of the Issuer as at the end of such year; and

          (ii) audited unconsolidated statements of profit and loss, surplus and
               source and use of funds,  prepared in  accordance  with  Canadian
               generally accepted accounting  principles applied on a consistent
               basis, of the Issuer for such year;

     (b)  within ninety (90) Business Days after the end of each fiscal  quarter
          of the Issuer,  in the form  customarily  prepared by  management  for
          internal purposes,  unaudited financial statements for such quarter as
          follows:

          (i)  an unconsolidated balance sheet of the Issuer; and


                                      -8-

          (ii) unconsolidated  statements of profit or loss,  surplus and source
               and use of funds of the Issuer.

4.11 Maintain Existence

The Issuer will at all times  maintain its corporate  existence and carry on its
business in a proper and efficient manner.

4.12 Default

The Issuer will promptly  notify the Holder of the occurrence of any event which
with notice or lapse of time or both would result in an Event of Default.

4.13 Use of Proceeds

The Issuer will use the proceeds of amounts borrowed  pursuant to this Debenture
for general corporate purposes.

4.14 Indebtedness

The Issuer shall not incur any Indebtedness  unless such  Indebtedness  contains
express terms, or is issued under a deed,  indenture or other  instrument  which
contains express terms, providing that it is unsecured and either subordinate to
or ranks pari passu with the Indebtedness evidenced by this Debenture.  The term
"Indebtedness"  means, with respect to the Issuer: (i) the principal  (including
redemption payments), premium, if any, interest and other payment obligations in
respect  of  (x)  indebtedness  of  the  Issuer  for  money  borrowed,  and  (y)
indebtedness evidenced by securities,  debentures, bonds, notes or other similar
instruments issued by the Issuer, including any such securities issued under any
deed,  indenture or other instrument to which the Issuer is a party  (including,
for the avoidance of doubt, indentures pursuant to which subordinated debentures
have  been or may be  issued),  (ii)  any  capital,  operating  or  other  lease
obligations of the Issuer, (iii) any obligations of the Issuer issued or assumed
as the deferred purchase price of property,  any conditional sale obligations of
the Issuer,  any hedging  agreements  and agreements of a similar nature thereto
and all agreements  relating to any such agreements,  and all obligations of the
Issuer under any title retention agreement (but excluding trade accounts payable
arising in the ordinary course of business),  (iv) any obligations of the Issuer
for  reimbursement  on any  letter  of  credit,  banker's  acceptance,  security
purchase facility or similar credit transaction, (v) all obligations of the type
referred to in clauses (i) through  (iv) above of other  persons for the payment
of which the Issuer is  responsible or liable as obligor,  guarantor,  surety or
otherwise,  and (vi) all  obligations  of the type  referred  to in clauses  (i)
through (v) above of other persons  secured by any lien on any property or asset
of the Issuer (whether or not such obligation is assumed by the Issuer), in each
case  whether  outstanding  at the date of original  issue of this  Debenture or
thereafter incurred.

                                    ARTICLE 5
                                EVENTS OF DEFAULT

5.1  Acceleration

Whenever any Event of Default,  as defined in any of Sections 5.2(f),  (g), (h),
(i) or (j) occurs and is continuing and not waived by the Holder in writing, the
Obligations shall be accelerated and immediately  become due and payable in full
without the necessity for any further  action or notice by the Holder.  Whenever
any other Event of Default occurs and while it is continuing, the Holder may, at
its option, declare the Obligations  accelerated and immediately due and payable
in full.


- -9-

5.2  Events of Default

Each of the following events constitutes an "Event of Default":

     (a)  the Issuer  fails to make any payment of any of the  Obligations  when
          due and such default is not remedied within fifteen (15) Business Days
          of receipt of written notice by the Issuer of such non-payment;

     (b)  the Issuer  commits a breach of, or fails to observe or  perform,  any
          material  covenant  (other than those covered by subsection (a) above)
          under  this  Debenture  or any  other  Agreement  from time to time in
          effect  between  the Issuer and the  Holder,  whether  relating to the
          Obligations  or not,  and such  breach or failure is not cured  within
          fifteen (15)  Business  Days of the date on which the Issuer  receives
          written  notice  from the Holder that the Issuer must cure such breach
          or failure;

     (c)  any  representation  and  warranty  made or  deemed  to be made by the
          Issuer  under  this  Debenture  shall  prove to have  been  materially
          inaccurate  when made or deemed to be made and such  inaccuracy is not
          cured  within  fifteen  (15)  Business  Days of the date on which  the
          Issuer  receives  written  notice from the Holder that the Issuer must
          cure such default;

     (d)  the Issuer ceases or threatens to cease to carry on its business;

     (e)  the Issuer fails to discharge or obtain a stay of any judgment for the
          payment  of money in  excess  of $25  million  United  States  dollars
          rendered against it within forty-five (45) days of receiving notice of
          such judgment;

     (f)  the Issuer commits any act of bankruptcy,  becomes insolvent or admits
          its insolvency (as defined or provided for in any applicable statute);

     (g)  any proceeding,  voluntary or involuntary, is commenced respecting the
          Issuer  pursuant to any statute  relating to  bankruptcy,  insolvency,
          reorganization  of  debts,  liquidation,  winding  up or  dissolution,
          including,  without  limitation,  any proceedings under the Bankruptcy
          and Insolvency Act (Canada),  the Companies' Creditors Arrangement Act
          (Canada) or the Winding-up Act (Canada);

     (h)  the Issuer passes any  resolution for its  liquidation,  winding up or
          dissolution;

     (i)  any Receiver,  trustee,  sequestor,  custodian or liquidator or Person
          with similar powers is appointed  judicially or  extra-judicially  for
          the Issuer or for any material part of its properties;

     (j)  the  Issuer,  or any  property  of the Issuer  valued in excess of $25
          million  United  States  dollars,  becomes  subject to any  execution,
          sequestration  or other analogous  process of any court or to distress
          or any analogous process; or

     (k)  the  Issuer   defaults   under  any  Agreement  with  respect  to  any
          indebtedness to any Person other than the Holder and (i) the aggregate
          principal  amount of such  indebtedness  exceeds  $25  million  United
          States  dollars;  and (ii)  such  default  (A)  continues  beyond  the
          applicable grace period,  (B) is not waived by the relevant  creditor,
          and (C) has resulted in the  acceleration of any such  indebtedness or
          obligation or the right of such Person to realize upon any collateral.


                                      -10-

5.3  Cure Period

If an Event of Default referred to in Section 5.2(g),  (i) or (j), (for purposes
of this Section 5.3, a "Cure Period Event of Default") occurs and (i) the Issuer
has not  voluntarily  initiated or  co-operated in the initiation of such event;
(ii) immediately upon becoming aware of such event, the Issuer diligently and in
good faith seeks to have such event discharged, discontinued or otherwise put to
an end;  and (iii) no other  Event of  Default  (other  than an Event of Default
arising  solely  as the  result  of a Cure  Period  Event of  Default)  has then
occurred and is  continuing,  then,  during the thirty (30) day period after the
Issuer first becomes aware of the Cure Period Event of Default, the Holder shall
only  enforce its rights  arising  from such Cure Period Event of Default to the
extent  reasonably  necessary  to  protect  its  interests  and  shall,  in  its
reasonable  discretion,  grant  such  waivers  as it (in  its  sole  discretion)
determines  are necessary or desirable.  If, during such thirty (30) day period,
the Issuer  successfully  and completely  discharges,  discontinues or otherwise
puts to an end the event or  circumstance  giving rise to such Cure Period Event
of Default,  in each case, to the reasonable  satisfaction  of the Holder,  and,
provided  no other  Event of Default  (other  than an Event of  Default  arising
solely as the result of such Cure Period  Event of Default) or event (other than
an event  arising  solely as the result of such Cure  Period  Event of  Default)
which, with notice or lapse of time or both, would become an Event of Default is
then  existing,  such Cure  Period  Event of  Default  shall,  to the extent not
previously  waived,  be deemed to be cured and the Holder  shall use  reasonable
efforts  to return  the  Issuer to its  position  before  such  Event of Default
(excluding  past due  interest).  If the Cure  Period  Event of  Default  is not
discharged,  discontinued or otherwise put to an end as contemplated  hereby, or
if any other condition  contemplated by this Section 5.3 is not satisfied at any
relevant  time,  then the  provisions  of this Section 5.3 shall be deemed to be
terminated  and shall be of no further  force or effect,  and the relevant  Cure
Period  Event of Default  shall have and be deemed to have  occurred as and from
the date of its original occurrence.

5.4  Waiver

The  Holder may waive any Event of Default or any breach by the Issuer of any of
the provisions of this Debenture.  No waiver, however, shall be deemed to extend
to a  subsequent  breach  or Event  of  Default,  whether  or not the same as or
similar to the breach or Event of Default waived,  and no act or omission by the
Holder  shall  extend to, or be taken in any manner  whatsoever  to affect,  any
subsequent  breach  or Event of  Default  or the  rights of the  Holder  arising
therefrom.  Any such  waiver  must be in writing  and signed by the Holder to be
effective.

                                    ARTICLE 6
                               REMEDIES ON DEFAULT

6.1  Remedies

     Upon the  occurrence  of an Event of  Default,  the  Holder  shall have all
remedies at law or in equity  available to it under this Debenture or applicable
law.  If the  Holder  demands  payment of any  Obligations  due by  maturity  or
acceleration,  it shall be deemed  reasonable  for the  Holder to  exercise  its
remedies  immediately  if such payment is not made, and any days of grace or any
time for payment which might  otherwise be required to be afforded to the Issuer
by applicable law, other than as set forth herein, is hereby irrevocably waived.

6.2  Remedies Cumulative

The rights,  remedies and powers conferred by this Article 6 are in addition to,
and not in substitution for, any other rights, remedies or powers the Holder may
have under this  Debenture  at law,  in equity or by or under any  statute.  The
Holder may proceed by way of any action,  suit or other  proceeding at law or in
equity and no right,  remedy or power of the  Holder  shall be  exclusive  of or
dependent on any other. Any right,  remedy or power may be exercised  separately
or in combination, and at any time.


                                      -11-

                                    ARTICLE 7
                                     GENERAL

7.1  Additional Covenants

The Issuer and the Holder  agree,  for so long as any event of default under the
Bridge  Credit  Agreement or any renewal,  refinancing  or extension  thereof or
replacement  therefore,  including without limitation any debt securities issued
in a public  offering or private  placement  by the Holder,  has occurred and is
continuing (giving effect to all applicable grace and cure periods), as follows:

     (a)  the  Issuer and the Holder  shall take all  actions  and do all things
          necessary  within  its  control to ensure  that the Holder  remains an
          unlimited  liability company subsisting under the laws of Nova Scotia,
          and shall not amend the  constating  documents  of the Holder or enter
          into (or cause the  Holder to enter  into) any  amalgamation,  merger,
          statutory  arrangement  or other  transaction  pursuant  to which  the
          Holder would cease to be an  unlimited  liability  company  subsisting
          under the laws of Nova Scotia;

     (b)  the Issuer shall remain the beneficial and record owner of 100% of the
          issued  and  outstanding  shares  and other  equity  interests  in the
          Holder; and

     (c)  in  connection  with any default or event of default that occurs or is
          declared  pursuant to the terms of the Bridge Credit  Agreement or any
          agreement,  indenture or instrument relating to indebtedness  incurred
          by the Holder in connection with any renewal, refinancing or extension
          thereof or replacement therefor (including without limitation any debt
          securities  issued in a public  offering or private  placement  by the
          Holder),  the Holder,  failing which, the Issuer,  shall promptly take
          all  actions  and do all  things  necessary  within  their  respective
          control to effect or  cooperate  with the filing of a petition for the
          winding-up or liquidation of the Holder under applicable law.

7.2  Assignment

Subject to the  proposed  assignment  of its rights  referred  to in Section 7.8
(wherein  the  assignee  shall be  recognized),  the Holder (or Holders) of this
Debenture,  as from time to time  registered  as such in the  Register,  will be
regarded  as  exclusively  entitled  to the  benefit of this  Debenture  and all
Persons may act accordingly. This Debenture may be sold or otherwise assigned by
the Holder,  in whole or in part. No assignment of this Debenture shall be valid
unless  recorded on the  Register  pursuant to the  direction  in writing of the
assignor  Holder (or such  Holder's  executors,  administrators  or other  legal
representatives)  or his or their  attorney  duly  appointed by an instrument in
writing,  in any such  case in form and  execution  satisfactory  to the  Issuer
acting reasonably. Upon such sale, the purchaser of the Debenture shall have all
rights as Debenture Holder (unless otherwise agreed).

7.3  Notice

Any notice, demand or other communication (in this Section, a "notice") required
or  permitted  to be given or made  hereunder  shall be in writing  and shall be
sufficiently given or made if:

     (a)  delivered in person during normal business hours of the recipient on a
          Business  Day  and  left  with a  receptionist  or  other  responsible
          employee of the recipient at the relevant address set forth below;

     (b)  except during any period of actual or imminent  interruption of postal
          services  due to strike,  lockout or other cause,  sent by  registered
          mail (or, if no registered  mail is available,  by prepaid first class
          mail); or

     (c)  sent by Transmission, charges prepaid and receipt confirmed;


                                      -12-

to the Holder at the address  recorded from time to time in the Register,  which
shall initially be in the case of Calpine Canada Energy Finance II ULC:

                           Calpine Canada Energy Finance II ULC
                           Suite 800,
                           Purdy's Wharf, Tower One
                           1959 Upper Water Street
                           P.O. Box 997 Halifax, Nova Scotia B3J 2X2

                           Fax Number:  (902) 420-1417
                           Attention:  Charles Reagh

                  and to the Issuer at:

                           Calpine Canada Resources Ltd.
                           Suite 1000, 350 - 7th Avenue S.W.
                           Calgary, Alberta  T2P 3N9

                           Fax Number:  (403) 298-8943
                           Attention:  Controller

Each notice sent in  accordance  with this Section  shall be deemed to have been
received:

                  (i)      at the time on the day it was delivered in person;

                  (ii)     at  the  beginning  of business on the third Business
                           Day after it was mailed by registered mail (excluding
                           each day on which there is any interruption of postal
                           services due to strike, lockout or other cause);

                  (iii)    one hour after they were sent on the same day that it
                           was sent by Transmission, or at the start of business
                           on  the  first  Business Day thereafter if the day on
                           which  it was sent by Transmission was not a Business
                           Day  or  if  the  time  at  which it was sent was not
                           during  or  prior  to  normal  business  hours  on  a
                           Business Day.

Addresses  for notice may be changed by giving  notice in  accordance  with this
section.

7.4  Time of the Essence

Time is of the essence of this Debenture and each of its provisions.

7.5  Performance on Holidays

If any action is required  to be taken  pursuant  to this  Debenture  on or by a
specified  date which is not a Business  Day, then such action shall be valid if
taken on or by the next succeeding Business Day.

7.6  Governing Law

This Debenture  shall be governed by, and interpreted and enforced in accordance
with,  the laws in force in the Province of Alberta  (excluding  any conflict of
laws rule or  principle  which  might  refer  such  construction  to the laws of
another   jurisdiction).   Each  party   hereto   irrevocably   submits  to  the
non-exclusive  jurisdiction  of the courts of Alberta with respect to any matter
arising hereunder or related hereto.


                                      -13-

7.7  Entire Agreement

There  are no  representations,  warranties,  conditions,  other  agreements  or
acknowledgments,  whether direct or collateral,  express or implied,  (including
any  representation,  warranty,  condition,  agreement or  acknowledgment in any
other  agreement  or  document  delivered  in  connection  with or in any manner
related to this Debenture,  unless expressly  otherwise  provided herein),  that
form part of or affect  this  Debenture  or the  Obligations,  other than as set
forth herein.

7.8  Successors and Assigns

This  Debenture  shall enure to the benefit of the Holder and its successors and
assigns and be binding on the Issuer and its successors (including any successor
by reason of amalgamation or statutory  arrangement).  The Holder confirms,  and
the Issuer  acknowledges,  that the Holder intends to assign the Holder's rights
under Section 7.1 of this Debenture to the indenture  trustee in relation to the
indebtedness incurred to refinance the indebtedness outstanding under the Bridge
Credit Agreement (as defined in Schedule "B").

7.9  Provisions Reasonable

The  Issuer   acknowledges  that  the  provisions  of  this  Debenture  and,  in
particular,  those respecting  rights,  remedies and powers of the Holder or any
Receiver  against the Issuer and its business upon the occurrence of an Event of
Default which is  continuing,  are  commercially  reasonable  and not manifestly
unreasonable.

7.10 Invalidity

If any provision of this Debenture is determined to be invalid or  unenforceable
by a court of  competent  jurisdiction,  that  provision  shall be  deemed to be
severed  herefrom,  and the remaining  provisions of this Debenture shall not be
affected thereby and shall remain valid and enforceable.

7.11 Debenture Lost or Stolen

If this  Debenture is mutilated,  lost,  stolen or destroyed,  the Issuer shall,
upon being furnished with evidence satisfactory to it of such mutilation,  loss,
theft or destruction:

     (a)  issue and deliver a  replacement  Debenture  of like date and tenor as
          the one  mutilated,  lost,  stolen or  destroyed,  in exchange for, in
          place of and upon cancellation of the mutilated Debenture,  or in lieu
          of and in substitution  for the lost,  stolen or destroyed  Debenture;
          and

     (b)  record such replacement Debenture in the Register.

7.12 Statutory Waivers

To the fullest  extent  permitted by law,  the Issuer  waives all of the rights,
benefits  and  protections  given by the  provisions  of any  existing or future
statute  which  imposes  limitations  upon the  powers,  rights or remedies of a
secured  party or upon the methods of  realization  of security,  including  any
seize or sue or  anti-deficiency  statute or any similar provisions of any other
statute.

7.13 Amendment

No Agreement  purporting to amend,  supplement or otherwise  vary this Debenture
shall be binding upon either the Issuer or the Holder  unless that  agreement is
in  writing  and  signed  by the  Issuer  and the  Holder,  and is  noted in the
Register.


                                      -14-

7.14 Receipt of Copy

The Issuer acknowledges receipt of a photocopy of this Debenture.




                                      -15-

IN   WITNESS   WHEREOF   the   Issuer   has,   through   its   duly   authorized
representative(s),  executed  and  delivered  this  Debenture  on the date first
written above.

                                        CALPINE CANADA RESOURCES LTD.


                                        By:      /s/ David D. Johnson        c/s
                                               ------------------------------
                                               Name:
                                               Title:


Acknowledged and Agreed:

                                        CALPINE CANADA ENERGY FINANCE II
                                        ULC


                                        By:      /s/ David D. Johnson        c/s
                                               ------------------------------
                                               Name:
                                               Title:








                                  SCHEDULE "A"

                                   Definitions


"Agreement" means any written agreement, indenture, instrument or undertaking.

"Business  Day"  means  any  day of the  week  except  Saturday,  Sunday  or any
statutory or civic  holiday  observed in Calgary,  Alberta,  Canada or San Jose,
California, USA.

"Cure Period of Default" has the meaning ascribed thereto in Section 5.3 hereof.

"Debenture"  means this debenture and all schedules  attached hereto as the same
may be amended, supplemented,  restated, replaced, extended or renewed from time
to time,  and all  references  to  "hereto",  "herein",  "hereof",  "hereby" and
"hereunder",  including similar expressions,  refer to this Debenture and not to
any particular section or portion of it. References to "Article",  "Section", or
"Schedule"  refer  to the  applicable  article,  section  or  schedule  of  this
Debenture, as the case may be.

"Encumbrance"  means any  encumbrance of any kind whatever,  choate or inchoate,
and includes,  without limitation, a security interest,  mortgage, lien, charge,
hypothec,  pledge,  hypothecation,  security  interest,  trust or deemed  trust,
whether contractual, statutory or otherwise arising.

"Event of Default" means any of the events set out in Section 5.2.

"Holder"  means,  initially,  Calpine Canada Energy Finance II ULC and means, at
any time thereafter, the registered holder or holders of the Debenture according
to the Register.

"including" means "including without  limitation" and the term "including" shall
not be construed to limit any general statement which it follows to the specific
or similar items or matters immediately following it.

"Initial  Reset  Date"  means May 2,  2008,  being  the first  date in which the
Interest  Rate under this  Debenture  is reset  pursuant  to the  provisions  of
Section 2.2.

"Interest  Advisory  Notice"  has the  meaning  ascribed  thereto in Section 2.2
hereof.

"Interest Payment Date" has the meaning ascribed thereto in Section 2.1 hereof.

"Interest Period" has the meaning set forth on Schedule "B".

"Interest  Rate" on any date means the rate per annum  determined  by adding the
Premium  to the  Reference  Rate in  effect  on such  date.  Interest  shall  be
calculated  hereunder on the basis of the actual number of days elapsed  divided
by 360 (the 360 day year being comprised of twelve 30 day months).  The interest
rate  hereunder  which is  expressed  as an annual rate for the  purposes of the
Interest Act (Canada) is equivalent to such  determined  rate  multiplied by the
actual number of days in the year in which same is to be ascertained and divided
by 360 days.

"Interest  Reset" means the change of Premium and/or  Reference Rate proposed in
an Interest  Reset Notice by Holder to the Issuer given  pursuant to Section 2.2
to the effect  that Holder  shall,  effective  the next Reset  Date,  unless the
Issuer  exercises its Prepayment  Right,  calculate the Interest Rate based upon
such proposed Premium or Reference Rate.

"Interest Reset Notice" has the meaning ascribed thereto in Section 2.2 hereof.

"Maturity Date" means April 25, 2021.


                                      -17-

"Obligations"  means the Principal  Amount of this  Debenture,  all interest due
thereon and all other monies from time to time owing pursuant to this Debenture,
together with the observance and  performance by the Issuer of its covenants and
obligations hereunder,  including,  without limitation,  all expenses, costs and
charges incurred by or on behalf of the Holder in connection with this Debenture
or the enforcement thereof.

"Parties" means the parties to this Debenture and "Party" means any one of them.

"Person" includes an individual, corporation, partnership, joint venture, trust,
unincorporated organization,  the Crown or any agency or instrumentality thereof
or any other entity recognized by law.

"Premium"  means,  for the initial  sixty (60) month  period  commencing  on the
Bridge  Refinancing  Date (as defined in Schedule  "B"), 45 basis  points,  and,
commencing  on the Initial  Reset  Date,  until  further  altered by an Interest
Reset, 25 basis points.

"Prepayment Amount" has the meaning ascribed thereto in Section 2.4 hereof.

"Prepayment Date" has the meaning ascribed thereto in Section 2.4 hereof.

"Prepayment Notice" has the meaning ascribed thereto in Section 2.3 hereof.

"Prepayment Right" has the meaning ascribed thereto in Section 2.3 hereof.

"Principal Amount" has the meaning ascribed thereto in Section 2.1 hereof.

"Receiver" means receiver, manager or receiver and manager.

"Reference Rate" has the meaning set forth on Schedule "B".

"Register" has the meaning ascribed thereto in Section 4.2 hereof.

"Reset Date" means the Initial Reset Date and, thereafter, the day following the
last day of every Interest Period.

"Restated  Principal  Amount"  has the meaning  ascribed  thereto in Section 2.4
hereof.

"Taxes" means all taxes, imposts, rates, levies, assessments and government fees
or dues  lawfully  levied,  assessed  or  imposed in respect of any Person or in
respect of the  Debenture  (including  in respect  of any  payment  thereunder),
including,  without limitation,  income, sales, excise, use, goods and services,
property, business transfer and value added taxes.

"Transmission"  means any electronic means of sending messages,  including telex
or facsimile transmission, which produces a permanent written record.





                                  SCHEDULE "B"

                          Interest Rate Determinations


"Bridge Credit Agreement" means the Bridge Credit Agreement,  dated as of August
22,  2001,  among  Calpine  Canada  Energy  Finance  II ULC,  as  Borrower,  the
commercial lending  institutions party thereto, as Lenders,  Credit Suisse First
Boston,  as  Co-Arranger  and   Documentation   Agent,   Bayerische   Landesbank
Girozentrale,  as Lead  Arranger  and  Syndication  Agent,  and The Bank of Nova
Scotia, as Lead Arranger and Administrative Agent, as amended from time to time.

"Bridge  Refinancing Date" means the date on which the indebtedness  outstanding
under the Bridge  Credit  Agreement  is repaid in full using the  proceeds  of a
public offering or private placement of debt securities of Calpine Canada Energy
Finance II ULC (the "Refinancing Securities").

"Interest  Period" (i) from the date hereof until the Bridge  Refinancing  Date,
has the meaning given in the Bridge  Credit  Agreement and (ii) after the Bridge
Refinancing Date, means (x) the period from and including the Bridge Refinancing
Date through and including the first interest payment date under the Refinancing
Securities  to occur  after  the  Bridge  Refinancing  Date  (together  with all
successive interest payment dates thereunder,  "Refinancing  Payment Dates") and
(y)  thereafter,   each  six-month  period   commencing  on  (but  excluding)  a
Refinancing  Payment  Date and ending  (and  including)  on the next  succeeding
Refinancing Payment Date.

"Reference  Rate"  means (i) in  respect of all  Interest  Periods  through  and
including the Interest Period ending on the Bridge Refinancing Date, the rate of
interest borne by loans  outstanding  under the Bridge Credit  Agreement  during
each such Interest Period, which rate shall be communicated to the Issuer by the
Holder  promptly  after  each  determination  thereof,  (ii) in  respect  of the
Interest  Period  commencing  on the Bridge  Refinancing  Date and all  Interest
Periods  thereafter  through and  including  the Interest  Period  ending on the
Initial Reset Date,  the rate per annum borne by the debt  securities  issued by
Calpine  Canada  Energy  Finance  II ULC in the  issuance  which  results in the
occurrence of the Bridge  Refinancing  Date, which rate shall be communicated by
the Holder to the Issuer promptly after the determination  thereof, and (iii) in
respect of the  Interest  Period  commencing  on the Initial  Reset Date and all
Interest Periods  thereafter,  until altered by an Interest Reset, the per annum
interest  rate  established  from time to time by the  Holder  from time to time
pursuant to an Interest Reset Notice.