REGISTRATION RIGHTS AGREEMENT


                            Dated as of July 1, 1997


                                 by and between


                               CALPINE CORPORATION


                                       and


                     CREDIT SUISSE FIRST BOSTON CORPORATION

                        MORGAN STANLEY & CO. INCORPORATED

                              SALOMON BROTHERS INC

                        SCOTIA CAPITAL MARKETS (USA) INC.

                          BANCAMERICA SECURITIES, INC.

                        CIBC WOOD GUNDY SECURITIES CORP.

                         -------------------------------


                          8 3/4% Senior Notes Due 2007


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                          REGISTRATION RIGHTS AGREEMENT


                  This  Registration  Rights Agreement (the "Agreement") is made
and  entered  into as of July 1,  1997,  by and  among  Calpine  Corporation,  a
Delaware   corporation   (the   "Company"),   and  Credit  Suisse  First  Boston
Corporation,  Morgan Stanley & Co.  Incorporated,  Salomon  Brothers Inc, Scotia
Capital  Markets (USA) Inc.,  BancAmerica  Securities,  Inc. and CIBC Wood Gundy
Securi ties Corp. (the "Purchasers").

                  This  Agreement is made  pursuant to the Purch ase  Agreement,
dated of even date herewith (the "Purch ase Agreement"), between the Company and
the Purchasers, which provides for the sale by the Company to the Pur chasers of
an aggregate of  $200,000,000  principal  amount of the  Company's 8 3/4% Senior
Notes Due 2007 (the "Senior Notes").  In order to induce the Purchasers to enter
into the Purchase Agreement,  the Company has agreed to provide the registration
rights  set forth in this Agree  ment.  The  execution  of this  Agreement  is a
condition to the Closing under the Purchase Agreement.

                                   The parties hereby agree as follows:

1.        Definitions

                  Capitalized  terms used herein  without defini tion shall have
their respective meanings set forth in the Purchase  Agreement.  As used in this
Agreement, the following terms shall have the following meanings:

                  Advice:  See Section 4(o).

                  Closing Date:  July 8, 1997, or such other
date as may be agreed upon for the sale and purchase of
the Senior Notes pursuant to the Purchase Agreement.

                  Company:  Calpine Corporation, a Delaware
corporation.

                  Exchange Act:  The Securities Exchange Act of
1934, as amended, and the rules and regulations of the
SEC promulgated thereunder.

                  Exchange Offer:  The exchange offer by the
Company of Exchange Notes for  Registrable  Securities  pursuant to Section 3(d)
hereof.
                  Exchange Offer Registration:  A registration
under the Securities Act effected pursuant to Section
3(d) hereof.

                  Exchange Offer Registration Statement:  An
                  -------------------------------------
exchange offer registration statement on Form S-4 or
Form S-1 (or, if applicable, on another appropriate
form) and all amendments and supplements to such regis
tration statement, in each case including the Prospectus
contained therein, all exhibits thereto and all material
incorporated by reference or deemed to be incorporated
by reference therein.

                  Exchange  Notes:  Securities  issued by the  Company  under an
indenture  containing  terms  identical  to the Senior  Notes  (except that such
Exchange  Notes (i) shall have been issued in an  Exchange  Offer and (ii) shall
have an  interest  rate of 8 3/4% per annum (9 1/4% per  annum if such  Exchange
Offer is not consummated by January 4, 1998),  without  provision for adjustment
as provided in paragraph 1 on the reverse of the Senior Notes), to be offered to
holders of Senior Notes in exchange  for Senior  Notes  pursuant to the Exchange
Offer.

                  Indenture:  The Indenture,  dated as of July 8, 1997,  between
the Company and The Bank of New York,  as Trustee,  pursuant to which the Senior
Notes  are  being  issued,  as  amended  or  supplemented  from  time to time in
accordance with the terms thereof.

                  Prospectus:   The  prospectus  included  in  any  Registration
Statement   (including,   without   limitation,   a  prospectus  that  discloses
information  previously  omitted from a prospectus filed as part of an effective
regis tration statement in reliance upon Rule 430A), as amend ed or supplemented
by any prospectus  supplement,  with respect to the terms of the offering of any
portion of the Registrable  Securities covered by such Registration Statement or
of the  Exchange  Notes,  as the  case  may be,  and all  other  amendments  and
supplements  to the Prospec tus,  including  post-effective  amendments  and all
materi al  incorporated  by reference or deemed to be incorporat ed by reference
in such Prospectus.

                  Registrable Securities:  All Senior Notes
which are Restricted Securities.

                  Registration Expenses:  See Section 5 hereof.
                  Registration Statement:   Any registration
statement of the Company which covers any of the Ex change Notes or  Registrable
Securities  pursuant  to  the  provisions  of  this  Agreement,   including  the
Prospectus,   amendments  and  supplements  to  such  registration  state  ment,
including post-effective amendments, all exhibits, and all material incorporated
by reference  or deemed to be  incorporated  by  reference in such  registration
state ment.

                  Restricted Securities:  Any and all Senior Notes upon original
issuance  thereof and at all times  subsequent  thereto until,  as to any Senior
Note, (i) the sale of such Senior Note has been effectively registered under the
Securities Act and such Senior Note has been disposed of in accordance  with the
Registration State ment relating thereto or (ii) it is distributed to the public
pursuant to Rule 144(k) (or any similar  provision  then in force,  but not Rule
144A) under the Securities Act or (iii) an Exchange Offer  Registration has been
declared effective and such Senior Note has been ex changed for an Exchange Note
by a person who is not then  deemed to be an  Underwriter  as defined in Section
2(11) of the Securities Act.

                  SEC:  The Securities and Exchange Commission.

                  Securities Act:  The Securities Act of 1933,
as amended, and the rules and regulations promulgated by
the SEC thereunder.

                  Shelf Registration:  See Section 3 hereof.

                  Special Counsel:  Skadden,  Arps,  Slate,  Meagher & Flom LLP,
special  counsel  to the  Purchasers  or such  other  special  counsel as may be
designated  by the  holders  of a  majority  in  aggregate  principal  amount of
Registrable Securities outstanding.

                  TIA:  The Trust Indenture Act of 1939, as
amended.

2.        Securities Subject to this Agreement; Holders

                           (a)      The securities entitled to the bene
fits of this Agreement are the Registrable Securities.

                           (b)  A Person is deemed to be a holder of
Registrable  Securities  whenever  such  Person  beneficially  owns  Registrable
Securities;  provided,  that only Regis  trable  Securities  of holders  who are
registered  holders of Registrable  Securities  shall be counted for purposes of
calculating any proportion of holders of Registrable Securities entitled to take
action or give notice pursu ant to this Agreement.

3.        Shelf Registrations; Exchange Offers

                           (a)      Shelf Registrations.   As promptly
as  practicable  and in no event later than December 1, 1997,  the Company shall
prepare and file with the SEC a Registration  Statement under the Securities Act
for an offering to be made on a  continuous  basis  pursuant to Rule 415 (or any
similar rule that may be adopted by the SEC) under the  Securities  Act covering
all the Registra ble Securities (the "Shelf Registration").

                           (b)      The Shelf Registration shall be on
Form  S-1  or  another   appropriate  form  permitting  regis  tration  of  such
Registrable  Securities  for  resale by such  holders  in the  manner or manners
designated by them.

                           (c)      The Company shall use its best ef
forts to cause the Shelf  Registration to become effec tive under the Securities
Act in accordance with Section 3(a) hereof and shall keep the Shelf Registration
con tinuously  effective for a period of two years from the Closing Date or such
shorter period which will terminate when all Registrable  Securities  covered by
the Shelf  Registration are no longer Restricted  Securities.  The Company shall
also supplement or make amendments to any Shelf  Registration if required by the
rules,  regulations or instructions  applicable to the registration form used by
the Company or if required by the Securities  Act or if reasonably  requested by
holders of a majority of the principal amount of the Registrable Securities then
outstanding covered by the Shelf Registration.

                           (d)      Exchange Offer.  Notwithstanding the
provisions  of  Section  3(a),  at the option of the Compa ny, to the extent any
applicable law or applicable interpretation of the staff of the SEC would permit
holders  thereafter to resell  Exchange Notes without  restriction,  the Company
may, in lieu of complying with Section 3(a), cause to be filed an Exchange Offer
Regis tration Statement covering the offer by the Company to
the holders of Senior Notes to exchange all of the  Registrable  Securities  for
Exchange  Notes,  to have such Exchange Offer  Registration  Statement  declared
effective
by the SEC not later than January 4, 1998 and to have
such Registration Statement remain effective until the
closing of the Exchange Offer.  The Company shall com

mence  the  Exchange  Offer  promptly  after  the  Exchange  Offer  Registration
Statement has been declared effective by the SEC by mailing the related exchange
offer Pro  spectus and  accompanying  documents  to each holder of Senior  Notes
stating, in addition to such other disclo sures required by applicable law:

                                    (i)     that the Exchange Offer is
         being made pursuant to this Agreement and that all
         Registrable Securities validly tendered will be
         accepted for exchange;

                                    (ii)     the date of acceptance for
         exchange  (which  shall be a period  of at least 60 days  from the date
         such notice is mailed) (the "Exchange Date");

                       (iii) that any Registrable Security
         not tendered will remain  outstanding  and continue to accrue  interest
         but,  except as set forth in the last  paragraph of this Section  3(d),
         will not re tain any rights under this Agreement;

                                    (iv)  that holders of Senior Notes
         electing  to have a  Registrable  Security  exchanged  pursuant  to the
         Exchange Offer will be required to surrender such Registrable Security,
         together with the enclosed letters of transmittal,  to the insti tution
         and at the address  (located in the Borough of  Manhattan,  The City of
         New York) specified in the notice prior to the close of business on the
         last Exchange Date; and

                                    (v)  that holders of Senior Notes
         will be entitled to withdraw their election not later than the close of
         business on the last Ex change Date, by sending to the  institution and
         at the address  (located in the Borough of  Manhattan,  The City of New
         York) specified in the notice a telegram, telex, facsimile transmission
         or letter setting forth the name of such holder,  the princi pal amount
         of Registrable  Securities  delivered for exchange and a statement that
         such holder is with

                                                    1




         drawing its election to have such Senior Notes ex
         changed.

                  As soon as  practicable  after the Exchange  Date, the Company
shall:

                       (i) accept for exchange Registrable
         Securities or portions thereof tendered and not
         validly withdrawn pursuant to the Exchange Offer;
         and

                       (ii) deliver, or cause to be deliv
         ered, to the Trustee for  cancellation  all Registra ble  Securities or
         portions thereof so accepted for exchange by the Company and issue, and
         cause the trustee under the indenture  governing the Exchange  Notes to
         promptly  authenticate and mail to each holder, a new Exchange Note, as
         the case may be, equal in principal  amount to the principal  amount of
         the Registrable Securities surrendered by such Holder.

                  The  Company  shall  use its best  efforts  to com  plete  the
Exchange   Offer  as  provided  above  and  shall  comply  with  the  applicable
requirements of the Securi ties Act, the Exchange Act and other  applicable laws
in connection with the Exchange  Offer.  The Exchange Offer shall not be subject
to any  conditions,  other  than  that  the  Exchange  Offer  does  not  violate
applicable  law or any  applicable  interpretation  of the staff of the SEC. The
Company shall inform the Purchasers of the names and addresses of the holders of
Senior Notes to whom the Ex change Offer is made, and the Purchasers  shall have
the right to  contact  such  holders  and  otherwise  facilitate  the  tender of
Registrable Securities in the Exchange Offer.

                  In connection with the Exchange Registration, the Company will
provide  a  letter  to the  staff  of  the  SEC  that  contains  statements  and
representations sub stantially in the form set forth in Mary Kay Cosmetics, Inc.
(no-action  letter  available June 5, 1991),  Morqan Stanley & Co.  Incorporated
(no-action  letter  available June 5, 1991),  Warnaco,  Inc.  (no-action  letter
available  October 11, 1991),  Shearman & Sterling  (no-action  letter available
July 2, 1993), Grupo Financiero  InverMexico,  S.A.  (no-action letter available
April 4, 1995) and no- action letters to similar effect.

                  As provided in the  Indenture,  in the event that  neither the
Shelf  Registration  nor the Exchange Offer  Registration  Statement is declared
effective  by January 4, 1998,  the  interest  rate on the Senior Notes shall be
permanently increased, beginning at such time, by 1/2% per annum.

4.        Registration Procedures

                  In  connection  with the  Company's  registration  obligations
pursuant to Section 3 hereof,  the Company  shall use its best efforts to effect
such  registrations to permit the consummation of the Exchange Offer or the sale
of such Registrable Securities in accordance with the intended method or methods
of disposition  thereof, and pursuant thereto the Company shall as expeditiously
as possible:

                           (a)      prepare and file with the SEC,
within the time period  specified  in Section 3, a Regis  tration  Statement  or
Registration  Statements on any appropriate form under the Securities Act, which
form,  in the case of a Shelf  Registration,  shall be available for the sale of
the  Registrable  Securities  by the hold ers  thereof  in  accordance  with the
intended method or methods of distribution thereof, and use its best ef forts to
cause each such Registration  Statement to become effective and remain effective
as  provided  here in;  provided,  however,  that before  filing a  Registration
Statement or Prospectus  or any  amendments or  supplements  thereto  (including
documents which would be  incorporated  or deemed to be incorporated  therein by
reference and amendments to such documents,  other than documents required to be
filed  pursuant to the Exchange  Act),  the Company shall furnish to the Special
Counsel  copies  of the  Registration  Statement  or  Prospectus  and  all  such
documents  in the form  proposed to be filed at least five  business  days prior
thereto and with  respect to amend ments or  supplements  thereof,  at least two
business days prior  thereto,  which  documents will be subject to the review of
the  Special  Counsel,  and the  Company  shall  not file any such  Registration
Statement or amendment  there to or any  Prospectus  or any  supplement  thereto
(includ ing such documents which, upon filing,  would be incorpo rated or deemed
to be incorporated by reference therein and amendments to such documents,  other
than  documents  required to be filed pursuant to the Exchange Act) to which the
Special Counsel shall reasonably object on a
timely  basis,   unless  the  Company  is  advised  by  its  counsel  that  such
Registration  Statement or amendment  thereto or any  Prospectus  or  supplement
thereto is required to be filed by applicable law;

                           (b)      prepare and file with the SEC such
amendments and post-effective  amendments to each Regis tration Statement as may
be necessary to keep such Registration  Statement continuously effective for the
applicable  period;  cause the  related  Prospectus  to be  supplemented  by any
required Prospectus  supplement,  and as so supplemented to be filed pursuant to
Rule 424 (or any similar provisions then in force) under the Securi ties Act;

                           (c)      notify the selling holders of Regis
trable  Securities  (except in the cases of clauses  (ii) and (iii)  hereof) and
their Special  Counsel  promptly,  and (if requested by any such person) confirm
such notice in writing,  (i) when a Prospectus or any Prospec tus  supplement or
post-effective  amendment related to such Registrable Securities has been filed,
and, with respect to a Registration  Statement or any post-effec  tive amendment
related to such Registrable Securities, when the same has become effective, (ii)
of the receipt of any comments from the SEC, (iii) of any request by the SEC for
amendments or supplements to a Registration  Statement or related  Prospectus or
for additional  infor mation,  (iv) of the issuance by the SEC of any stop order
suspending the  effectiveness  of a Registration  Statement or the initiation of
any proceedings  for that purpose,  (v) if at any time the  representations  and
warranties of the Company  contained in any agreement  contemplated by paragraph
(1)  below in  connection  with the sale of  Restricted  Securities  by  selling
holders  thereof  cease  to be true  and  correct,  (vi) of the re  ceipt by the
Company of any notification  with respect to the suspension of the qualification
or exemption from qualification of any of the Registrable Securities for sale or
exchange in any  jurisdiction  of the United States of America or the initiation
of any  proceeding  for such purpose,  (vii) of the happening of any event which
makes any  statement of a material fact made in such  Registration  Statement or
related  Prospectus or any document  incorporated  or deemed to be  incorporated
therein by  reference  untrue or which  requires  the making of any changes in a
Registration  Statement or related  Prospectus so that such  documents  will not
contain any untrue statement of a material fact or omit to state any
material fact required to be stated  therein or necessary to make the statements
therein,  in light of the  circum  stances  under  which  they  were  made,  not
misleading,  and (viii) of the  Company's  determination  that a post  effective
amendment to a Registration Statement would be appropriate;

                           (d)      use every reasonable effort to
obtain  the  withdrawal  of  any  order  suspending  the  effec  tiveness  of  a
Registration Statement or the lifting of any suspension of the qualification (or
exemption from  qualification) of any of the Registrable  Securities for sale or
exchange in any  jurisdiction  of the United  States of America,  as promptly as
practicable;

                           (e)      if reasonably requested by any
holder of  Registrable  Securities  covered by a Registra  tion  Statement,  (i)
promptly incorporate in a Prospectus supplement or post-effective amendment such
information as such holder reasonably requests to be included there in as may be
required by applicable  law, (ii) make all required  filings of such  Prospectus
supplement or such post-effective  amendment as soon as the Company has received
notification of the matters to be incorporated in such Prospectus  supplement or
such  post-effective  amendment,  and (iii) supplement or make amendments to any
Registration  Statement if  reasonably  requested  by any holder of  Registrable
Securities  covered  by  such  Registration  Statement  as  may be  required  by
applicable law;

                           (f)      in the case of a Shelf Registration,
furnish  to each  selling  holder  of  Registrable  Securities  and the  Special
Counsel,  without  charge,  at  least  one  conformed  copy of the  Registration
Statement or State ments and any post-effective  amendment  thereto,  includ ing
financial  statements  and  schedules,  all  documents  incorporated  therein by
reference  or  deemed  incorporated   therein  by  reference  and  all  exhibits
(including  those  previously  furnished or incorporated  by reference),  at the
earliest  practicable  time  under the  circumstances  after the  filing of such
documents with the SEC;

                           (g)      in the case of a Shelf Registration,
deliver  to each  selling  holder  of  Registrable  Securities  and the  Special
Counsel,  without  charge,  as many  copies of the  Prospectus  or  Prospectuses
(including each pre liminary prospectus) and any amendment or supplement thereto
as such Persons may reasonably request; the
Company  consents to the use of such  Prospectus  or any amendment or supplement
thereto in  accordance  with  applicable  law by each of the selling  holders of
Regis  trable  Securities  in  connection  with  the  offering  and  sale of the
Registrable Securities covered by such Prospectus or any amendment or supplement
thereto in accordance with applicable law;

                           (h)  prior to any public offering or ex
change  of  Registrable  Securities,  to use its best ef forts  to  register  or
qualify or cooperate  with the selling  holders of  Registrable  Securities  and
their Special Counsel in connection with the registration or  qualification  (or
exemption  from  such   registration  or   qualification)  of  such  Registrable
Securities  for  offer  and sale or  exchange,  as the case  may be,  under  the
securities or blue sky laws of such state or local  jurisdictions  as any seller
reasonably requests in writing; keep each such registration or qualification (or
exemption therefrom) effective during the period such Registration  Statement is
required to be kept effective and do any and all other acts or things neces sary
or advisable to enable the disposition in such  jurisdictions of the Registrable
Securities covered by the applicable Registration Statement; provided, howev er,
that the Company will not be required to (A) qualify generally to do business in
any  jurisdiction  where it is not then so qualified,  (B) take any action which
would subject it to general service of process in any such jurisdiction where it
is not then so  subject  or (C)  register  or  qualify  securities  prior to the
effective date of any Registration Statement under Section 3 hereof;

                           (i)  in the case of a Shelf Registration,
cooperate with the selling holders of Registrable  Secu rities to facilitate the
timely  preparation  and  delivery  of  certificates   representing  Registrable
Securities  to be sold,  which  certificates  shall  not bear any  restric  tive
legends; and enable such Registrable  Securities to be in such denominations and
registered in such names,  in all cases  consistent  with the  requirements  set
forth in the Indenture, as the holders may request;

                           (j)  subject to the exceptions contained
in (A), (B) and (C) of subsection (h) hereof,  cause the Registrable  Securities
covered by the  applicable  Regis  tration  Statement to be  registered  with or
approved by such other federal, state and local governmental regula
tory agencies or  authorities in the United States as may be necessary to enable
the seller or sellers thereof to consummate the disposition of such  Registrable
Securi  ties and  cooperate  with  each  seller  of  Registrable  Securities  in
connection with any filings required to be made with the National Association of
Securities Deal ers, Inc.;

                           (k)  upon the occurrence of any event
contemplated  by  Section   4(c)(vii)  or  4(c)(viii)   above,  as  promptly  as
practicable  thereafter,   prepare  and  file  with  the  SEC  a  supplement  or
post-effective   amendment  to  the  applicable   Registration  Statement  or  a
supplement  to the related  Prospectus or any document  incorporated  therein by
reference or file any other required  document so that, as thereafter  delivered
to the purchasers of the  Registrable  Securities  being sold  thereunder,  such
Prospectus  will not contain an untrue  statement of a material  fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading;

                           (l)  in the case of a Shelf Registration,
enter  into  such  customary  agreements  and  take all such  other  actions  in
connection  therewith  (including those reasonably requested by the holders of a
majority  of the  Registrable  Securities  being  sold) in order to  expedite or
facilitate the disposition of such  Registrable Secu rities  including,  but not
limited to, an underwritten  offering and in such connection,  (i) to the extent
possible,  make such  representations  and  warranties  to the  holders  and any
underwriters of such Registrable  Securities with respect to the business of the
Company  and its  subsidiaries,  the  Registration  Statement,  Pro  spectus and
documents incorporated by reference or deemed incorporated by reference, if any,
in each case, in form, substance and scope as are customarily made by issuers to
underwriters  in  underwritten  offerings  and  confirm  the  same  if and  when
requested,  (ii) obtain  opinions of counsel to the Company  (which  counsel and
opinions,  in form,  scope and substance,  shall be reason ably  satisfactory to
Special Counsel) addressed to each selling holder and underwriter of Registrable
Securi ties,  covering the matters customarily covered in opin ions requested in
underwritten offerings, (iii) obtain "cold comfort" letters from the independent
certified  public  accountants  of the Company  (and,  if  necessary,  any other
certified public accountant of any subsidiary
of the Company,  or of any business  acquired by the Company for which financial
statements  and financial  data is or is required to be included in the Registra
tion Statement)  addressed to each selling holder and underwriter of Registrable
Securities,  such  letters to be in customary  form and covering  matters of the
type  customarily  covered  in  "cold  comfort"  letters  in  connec  tion  with
underwritten offerings,  and (iv) deliver such documents and certificates as may
be reasonably request ed by the holders of a majority in principal amount of the
Registrable  Securities  being sold to evidence  the  continued  validity of the
representations  and warranties of the Company made pursuant to clause (i) above
and to  evidence  compliance  with any  customary  conditions  con  tained in an
underwriting agreement;

                           (m)  in the case of a Shelf Registration,
make available for inspection by a representative  of the holders of Registrable
Securities  being  sold,  Special  Counsel  and an  accountant  retained by such
selling hold ers, in a manner designed to permit  underwriters to sat isfy their
due diligence  investigation  under the Securi ties Act, all financial and other
records,  pertinent corporate documents and properties of the Company, and cause
the officers,  directors and  employees of the Company and its  subsidiaries  to
supply all information  reasonably requested by any such  representative,  attor
ney or accountant in connection with such registration;  provided, however, that
any records,  information  or documents  that are  designated  by the Company as
confi dential at the time of delivery of such records, infor mation or documents
shall be kept confidential by such persons, unless (i) such records, information
or docu ments are in the public  domain or otherwise  publicly  available,  (ii)
disclosure  of such  records,  information  or documents is required by court or
administrative   order,  (iii)  disclosure  of  such  records,   information  or
documents,  in the  written  opinion  of counsel to such  person,  is  otherwise
required by law (including, without limitation,  pursuant to the requirements of
the  Securi  ties  Act) or (iv)  disclosure  of such  records,  informa  tion or
document  is  necessary  to avoid or correct a  misstatement  or omission in the
Registration Statement, Prospectus supplement or any post-effective amendment;

                           (n)  provide an indenture trustee for the
Registrable  Securities  or  Exchange  Notes,  as the case may be, and cause the
indenture (or the indenture gov erning the Exchange Notes) to be qualified under
the TIA
not  later  than  the  effective  date of any  registration;  and in  connection
therewith,  cooperate  with the trustee to effect such changes to such indenture
as may be required for such indenture to be so qualified in accor dance with the
terms of the TIA and  execute,  and use its best efforts to cause the trustee to
execute, all docu ments as may be required to effect such changes, and all other
forms and documents  required to be filed with the SEC to enable such  indenture
to be so qualified in a timely manner; and

                           (o)  comply with all applicable rules and
regulations of the SEC and, in the case of a Shelf Registration,  make generally
available  to  its  security  holders  an  earnings  statement   satisfying  the
provisions of Section  11(a) of the  Securities  Act and Rule 158  thereunder no
later  than 45 days after the end of any  12-month  period (or 90 days after the
end of any 12-month period if such period is a fiscal year),  com mencing on the
first  day of the first  fiscal  quarter  of the  Company  commencing  after the
effective date of a Registration  Statement,  which  statement  shall cover said
12-month period.

                  The Company may require each seller of Regis trable Securities
under a Shelf Registration to furnish to the Company such information  regarding
the distribu tion of such Registrable Securities as the Company may from time to
time reasonably request in writing and each holder in acquiring such Registrable
Securities  agrees to supply such  information to the Company promptly upon such
request.

                  Each holder of Registrable Securities agrees by acquisition of
such  Registrable  Securities that, in the event of a Shelf  Registration,  upon
receipt of any notice from the Company of the happening of any event of the kind
described in Section  4(c)(iii),  4(c)(iv),  4(c)(vi),  4(c)(vii) or  4(c)(viii)
hereof, such holder will forthwith discontinue  disposition of such Registra ble
Securities  covered by such  Registration  Statement  or  Prospectus  until such
holder's  receipt  of the  copies  of the  supplemented  or  amended  Prospectus
contemplated  by Section  4(k)  hereof,  or until it is advised in writing  (the
"Advice")  by the  Company  that the use of the appli  cable  Prospectus  may be
resumed, and has received copies of any additional or supplemental filings which
are incorporated or deemed to be incorporated by reference in such Prospectus.

5.        Registration Expenses

                  The Company  shall pay all fees and  expenses  incident to the
performance  of or  compliance  with this  Agreement  by the Company  including,
without  limitation,  (i) all SEC,  stock  exchange or National  Association  of
Securities  Dealers,  Inc.  registration  and  filing  fees,  (ii)  all fees and
expenses  incurred in connection with  compliance with state  securities or blue
sky laws (in  cluding  reasonable  fees and  disbursements  of  counsel  for any
underwriters or holders in connection with blue sky  qualification of any of the
Exchange Notes or Regis

trable Securities),  (iii) all expenses of any persons in preparing or assisting
in  preparing,  word  processing,  printing and  distributing  any  Registration
Statement,   any  Prospectus,   any  amendments  or  supplements   thereto,  any
underwriting  agreements,   securities  sales  agreements  and  other  documents
relating to the  performance of and  compliance  with this  Agreement,  (iv) all
rating  agency  fees and (v) the  fees  and  disbursements  of  counsel  for the
Company,  Special  Counsel to the holders of Registra ble  Securities and of the
independent  public  accountants  of the Company,  including the expenses of any
special  audits  or "cold  comfort"  letters  required  by or  incident  to such
performance  and compliance,  but excluding fees of counsel to the  underwriters
and underwriting dis counts and commissions and transfer taxes, if any, relating
to the sale or disposition of Registrable  Securities by a holder of Registrable
Securities.

6.        Indemnification

                  The  Company  agrees  to  indemnify  and  hold  harm  less the
Purchasers and each holder of Registrable  Secu rities and each person,  if any,
who controls the Pur chasers or any holder of Registrable  Securities within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act,  from and  against  any and all losses,  claims,  damages  and  liabilities
(includ ing, without limitation, any legal or other expenses reasonably incurred
in connection with defending or  investigating  any such action or claim) caused
by any  untrue  statement  or  alleged  untrue  statement  of a mate  rial  fact
contained  in  the  Registration   Statement  or  any  amendment  thereof,   any
preliminary  prospectus or the  Prospectus (as amended and  supplemented  if the
Company shall have furnished any amendments or supplements  thereto),  or caused
by any omission or alleged omission
to state therein a material  fact required to be stated  therein or necessary to
make the  statements  therein not  misleading,  except  insofar as such  losses,
claims,  damages or  liabilities  are  caused by any such  untrue  statement  or
omission or alleged untrue statement or omission based upon information relating
to the  Purchas ers or any holder of  Registrable  Securities  furnished  to the
Company  in  writing  by such  Purchasers  or holder of  Registrable  Securities
expressly for use therein.

                  In connection with any Shelf Registration in which a holder of
Registrable  Securities is participat ing, in furnishing information relating to
such holder of  Registrable  Securities to the Company in writing  expressly for
use in such Registration Statement,  any preliminary prospectus,  the Prospectus
or any  amendments  or  supplements  thereto,  the  holders of such  Registrable
Securities  agree severally and not jointly,  to indemnify and hold harmless the
Purchasers  and each person,  if any, who  controls  the  Purchasers  within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act and the  Company,  its  directors,  its  officers  who  sign a  Registration
Statement and each person,  if any, who controls the Company  within the meaning
of either such Section, from and against any and all losses, claims, damages and
liabilities (including,  without limitation,  any legal or other expenses reason
ably incurred in connection  with defending or investi gating any such action or
claim) caused by any untrue  statement or alleged untrue statement of a material
fact  contained in the  Registration  Statement or any  amendment  thereof,  any
preliminary  prospectus or the  Prospectus  (as amended or  supplemented  if the
Company shall have furnished any amendments or supplements  thereto),  or caused
by any omission or alleged omission to state therein a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading,
but  only  with  reference  to  such  information  relating  to such  holder  of
Registrable  Securities  furnished  in writing by or on behalf of such holder of
Registrable  Securities  expressly for use in the  Registration  State ment, any
preliminary prospectus, the Prospectus or any amendments or supplements thereto.

                  The Purchasers agree, severally and not joint ly, to indemnify
and hold  harmless  the  Company,  the holders of  Registrable  Securities,  the
directors of the Company, the officers of the Company who sign the Regis tration
Statement and each person, if any, who controls
the Company or any holder of Registrable Securities within the meaning of either
Section 15 of the Securi  ties Act or  Section 20 of the  Exchange  Act from and
against any and all losses, claims, damages and liabili ties (including, without
limitation,  any legal or other expenses  reasonably incurred in connection with
defend  ing or  investigating  any such  action or claim)  caused by any  untrue
statement  or alleged  untrue  statement  of a material  fact  contained  in the
Registration  Statement or any amendment thereof, any preliminary  prospectus or
the Prospectus (as amended or  supplemented  if the Company shall have furnished
any  amendments or  supplements  thereto),  or caused by any omission or alleged
omission  to state  therein a material  fact  required  to be stated  therein or
necessary to make the statements therein not misleading, but only with reference
to information  relating to the  Purchasers  furnished to the Company in writing
expressly for use in the Registration Statement, any preliminary prospectus, the
Prospectus or any amend ments or supplements thereto.

                  In  case  any   proceeding   (including   any  govern   mental
investigation)  shall be  instituted  involving  any  person in respect of which
indemnity may be sought pursuant to any of the three preceding paragraphs,  such
person (the  "indemnified  party") shall promptly notify the person against whom
such  indemnity  may be sought  (the  "indemnifying  party") in writing  and the
indemnify ing party, upon request of the indemnified party, shall retain counsel
reasonably  satisfactory  to the indemni fied party to represent the indemnified
party and any others the indemnifying party may designate in such proceeding and
shall pay the fees and disbursements of such counsel related to such proceeding.
In any such proceeding, any indemnified party shall have the right to retain its
own counsel,  but the fees and expenses of such counsel  shall be at the expense
of such indemnified party unless (i) the indemnifying party and the indemni fied
party shall have  mutually  agreed to the  retention of such counsel or (ii) the
parties to any such proceed ing (including any impleaded  parties)  include both
the  indemnifying  party and the  indemnified  party and repre sentation of both
parties  by the  same  counsel  would  be  inappropriate  due to the  actual  or
potential   differing   interests  between  them.  It  is  understood  that  the
indemnifying  party  shall  not,  in  respect  of  the  legal  expenses  of  any
indemnified  party in connection  with any proceeding or related  proceedings in
the same jurisdic tion, be liable for (a) the fees and expenses of more than one
separate firm (in addition to any local coun

                                        2





sel) for the  Purchasers  and all persons,  if any,  who control the  Purchasers
within the meaning of either Sec tion 15 of the  Securities Act or Section 20 of
the Exchange  Act, (b) the fees and expenses of more than one separate  firm (in
addition to any local counsel) for the Company, its directors,  its officers who
sign the Regis  tration  Statement  and each  person,  if any,  who controls the
Company  within the meaning of either such Section and (c) the fees and expenses
of more  than one  separate  firm (in  addition  to any local  counsel)  for all
holders of  Registrable  Securities  and all  persons,  if any,  who control any
holders of Registrable Securities within the meaning of either such Section, and
that all such fees and expenses  shall be reimbursed  as they are  incurred.  In
such case involving the Purchasers and such control  persons of the  Purchasers,
such  firm  shall be  designated  in  writing  by  Credit  Suisse  First  Boston
Corporation.  In such case involving the holders of Registrable  Secu rities and
such controlling persons of holders of Regis trable Securities,  such firm shall
be designated in writing by holders of a majority in aggregate  principal amount
of Registrable Securities.  In all other cases, such firm shall be designated by
the Company.  The indemnifying  party shall not be liable for any settle ment of
any proceeding  effected without its written  consent,  but if settled with such
consent or if there be a final  judgment  for the  plaintiff,  the  indemnifying
party agrees to  indemnify  the  indemnified  party from and against any loss or
liability  by  reason  of such  settle  ment or  judgment.  Notwithstanding  the
foregoing sen tence, if at any time an indemnified party shall have requested an
indemnifying  party to reimburse the indem nified party for fees and expenses of
counsel as contem  plated by the second and third  sentences of this para graph,
the indemnifying  party agrees that it shall be liable for any settlement of any
proceeding  effected  without its written  consent,  provided  that (i) such set
tlement is entered  into more than 30 days  after  receipt by such  indemnifying
party of the aforesaid request and (ii) such  indemnifying  party shall not have
reimbursed the  indemnified  party in accordance  with such request prior to the
date of such  settlement  unless the  indemni  fying  party has  contested  such
obligation and provides reasonable assurances that such payment can be made upon
resolution  of such  dispute.  No  indemnifying  party shall,  without the prior
written consent of the indemni fied party,  effect any settlement of any pending
or threatened proceeding in respect of which any indemni
fied party is or could have been a party and  indemnity  could have been  sought
hereunder  by  such  indemnified  party,  unless  such  settlement  includes  an
unconditional  release of such  indemnified  party from all  liability on claims
that are the subject matter of such proceeding.

                  If the  indemnification  provided for in the first,  second or
third  paragraph of this Section 6 is  unavailable  to an  indemnified  party or
insufficient in respect of any losses,  claims,  damages or liabilities referred
to  therein,  then each  indemnifying  party  under such  paragraph,  in lieu of
indemnifying such indemnified  party thereunder,  shall contribute to the amount
paid or payable by such  indemnified  party as a result of such losses,  claims,
damages or  liabilities  in such  propor tion as is  appropriate  to reflect the
relative fault of the  indemnifying  party or parties on the one hand and of the
indemnified party or parties on the other hand in connection with the statements
or omissions that result ed in such losses, claims,  damages or liabilities,  as
well as any other relevant equitable  considerations.  The relative fault of the
holders of  Registrable  Securi ties on the one hand and the  Purchasers  on the
other hand shall be determined by reference to, among other things,  whether the
untrue or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact relates to information supplied by the holders
of  Registrable  Securities  or by the  Purchasers  and the  parties',  relative
intent,  knowledge,  access to information and opportunity to correct or prevent
such statement or omission.

                  The  parties  hereto  agree  that  it  would  not be  just  or
equitable if  contribution  pursuant to this Sec tion 6 were  determined  by pro
rata  allocation or by any other method of allocation that does not take account
of the  equitable  considerations  referred  to in the  immedi  ately  preceding
paragraph. The amount paid or payable by an indemnified party as a result of the
losses, claims, damages and liabilities referred to in the immediately preceding
paragraph  shall be deemed to  include,  subject  to the  limitations  set forth
above, any legal or other expenses reasonably incurred by such indemnified party
in  connection  with  investigating  or  defending  any such  action  or  claim.
Notwithstanding  the  provisions  of this  Section  6, no holder of  Registrable
Securities  shall be required to indemnify or contribute any amount in excess of
the amount by which the total price at which the Registrable  Securities sold by
such
holder of Registrable  Securities and  distributed to the public were offered to
the public  exceeds  the amount of any damages  that such holder of  Registrable
Securities  has  otherwise  been  required  to pay by reason  of such  untrue or
alleged untrue  statement or omission or al leged omission.  No person guilty of
fraudulent  misrep  resentation  (within  the  meaning of  Section  11(f) of the
Securities  Act) shall be entitled to  contribution  from any person who was not
guilty of such fraudulent misrep resentation.  The remedies provided for in this
Section 6 are not exclusive and shall not limit any rights or remedies which may
otherwise be available to any indem nified party at law or in equity.

                  The indemnity and  contribution  provisions con tained in this
Section 6 shall remain operative and in full force and effect  regardless of any
investigation  made by or on behalf of the Purchasers or any person  controlling
the Purchasers,  any holder of Registrable  Securities or any person controlling
the holder of Registrable Securities,  or the Company, its officers or directors
or any person controlling the Company.

7.        Miscellaneous

                           (a)  Remedies.  In the event of a breach
by the Company of any of its obligations  under this  Agreement,  each holder of
Registrable  Securities,  in addition to being  entitled to exercise  all rights
grant ed by law,  including  recovery of damages,  will be enti tled to specific
performance of its rights under this Agreement. The Company agrees that monetary
damages would not be adequate  compensation for any loss incurred by reason of a
breach by it of any of the  provisions  of this  Agreement  and  hereby  further
agrees that, in the event of any action for specific  performance  in respect of
such  breach,  they  shall  waive  the  defense  that a remedy  at law  would be
adequate.

                           (b)  No Inconsistent Agreements.  The
Company  shall  not,  on or after the date of this  Agree  ment,  enter into any
agreement with respect to its secu rities which is inconsistent  with the rights
granted to the holders of Registrable  Securities in this Agreement or otherwise
conflicts with the provisions hereof.

                           (c)      Amendments and Waivers.  The provi
sions of this Agreement, including the provisions of
this sentence, may not be amended, modified or supple
mented, and waivers or consents to departures from the provisions hereof may not
be given,  unless the Company has obtained  the written  consent of holders of a
majori ty of the then  outstanding  aggregate  principal  amount of  Registrable
Securities.  Notwithstanding  the foregoing,  a waiver or consent to depart from
the provisions hereof with respect to a matter which relates  exclusively to the
rights of holders of  Registrable  Securities  whose  securities  are being sold
pursuant to a  Registration  Statement and which does not directly or indirectly
affect the rights of other  holders of  Registrable  Secu rities may be given by
holders of at least a majority in aggregate  principal amount of the Registrable
Securities being sold by such holders.

                           (d)      Notices.  All notices and other com
munications  provided  or  permitted  hereunder  shall  be  made in  writing  by
hand-delivery, registered first-class mail, telex, or telecopier:

                                    (i)     if to a holder of Registrable
         Securities,  at the most  current  address  given by such holder to the
         Company in accordance  with the provisions of this Section 7(d),  which
         address ini tially is, with respect to the Purchasers, the ad dress set
         forth on the first page of the Purchase Agreement; and

                                    (ii)     if to the Company, initially
         at its  address set forth on the first page of the  Purchase  Agreement
         and  thereafter  by such  other  address,  notice  of which is given in
         accordance with the provision of this Section 7(d).

                  All such  notices and  communications  shall be deemed to have
been duly given: when delivered by hand, if personally  delivered;  two business
days after being deposited in the mail, postage prepaid, if mailed; one business
day after being sent by next-day  solvent air courier;  when  answered  back, if
telexed; and when re ceipt acknowledged, if telecopied.

                  Copies of all such  notices,  demands or other  communications
shall be  concurrently  delivered  by the person  giving the same to the Trustee
under the Inden ture at the address specified in such Indenture.

                           (e)      Successors and Assigns.  This Agree
ment shall inure to the benefit of and be binding upon
the successors and assigns of each of the parties, in

                                        3





cluding  without  limitation  and  without  the need for an express  assignment,
subsequent holders of Registrable Securities.

                           (f)      Counterparts.  This Agreement may be
executed  in any number of  counterparts  and by the par ties hereto in separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of which taken together shall constitute one and the same agreement.

                           (g)  Headings.  The headings in this
Agreement are for convenience of reference only and shall not limit or otherwise
affect the meaning hereof.

                           (h)  Governing Law.  This Agreement shall
be governed by and  construed  in  accordance  with the laws of the State of New
York, without regard to principles of conflicts of laws.

                           (i)  Severability.  If any term, provi
sion,  covenant or restriction of this Agreement is held by a court of competent
jurisdiction to be invalid,  void or unenforceable,  the remainder of the terms,
provi sions,  covenants and  restrictions  set forth herein shall remain in full
force and effect and shall in no way be affected,  impaired or invalidated,  and
the  parties  hereto  shall  use  their  best  efforts  to find  and  employ  an
alternative  means to achieve the same or substantial ly the same result as that
contemplated  by such term,  provision,  covenant or  restriction.  It is hereby
stipu lated and declared to be the intention of the parties that they would have
executed the remaining terms,  provisions,  covenants and  restrictions  without
including  any of  such  which  may  be  hereafter  declared  invalid,  void  or
unenforceable.

                           (j)  Entire Agreement.  This Agreement is
intended  by the  parties  as a final  expression  of  their  agreement,  and is
intended  to be a  complete  and  exclu  sive  statement  of the  agreement  and
understanding  of the parties hereto in respect of the subject matter con tained
herein. There are no restrictions,  promises, warranties or undertakings,  other
than those set forth or referred  to herein,  with  respect to the  registration
rights  granted by the Company with respect to the secu rities sold  pursuant to
the Purchase Agreement. This Agreement supersedes all prior agreements and under

                                        4





standings between the parties with respect to such
subject matter.

                  (k) Securities Held by the Company or its Affiliates. Whenever
the  consent or approval of holders of a  specified  percentage  of  Registrable
Securities is required hereunder,  Registrable Securities held by the Company or
any of its affiliates (as such term is de fined in Rule 405 under the Securities
Act) (other than the Purchasers or subsequent holders of Registrable  Securities
if such subsequent  holders are deemed to be such affiliates solely by reason of
their  holding  of  such  Registrable   Securities)  shall  not  be  counted  in
determining  whether  such  consent or approval was given by the holders of such
required percentage or amount.


                                        5





                  IN WITNESS  WHEREOF,  the parties have executed this Agreement
as of the date first written above.

                                    CALPINE CORPORATION



                      By:_________________________________
                                      Name:
                                       Title:


                                    CREDIT SUISSE FIRST BOSTON CORPORATION
                                    MORGAN STANLEY & CO. INCORPORATED
                                    SALOMON BROTHERS INC
                                    SCOTIA CAPITAL MARKETS (USA) INC.
                                    BANCAMERICA SECURITIES, INC.
                                    CIBC WOOD GUNDY SECURITIES CORP.

                                    By:  CREDIT SUISSE FIRST BOSTON
                                              CORPORATION



                      By:_________________________________
                                      Name:
                                       Title:


                                        6