$200,000,000

                               CALPINE CORPORATION

                               8 3/4% Senior Notes


                               PURCHASE AGREEMENT


                                  July 1, 1997


CREDIT SUISSE FIRST BOSTON CORPORATION
   As Representative of the Several Purchasers,
           11 Madison Avenue,
              New York, N.Y. 10010

Dear Sirs:


         1.  Introductory.  Calpine  Corporation,  a Delaware  corporation  (the
"Company"),  proposes,  subject to the terms and conditions  stated  herein,  to
issue and sell to the several initial purchasers named in Schedule A hereto (the
"Purchasers")  U.S.$200,000,000  principal amount of its 8 3/4% Senior Notes Due
2007 (the "Offered Securities") to be issued under an indenture dated as of July
8, 1997 (the  "Indenture"),  between  the  Company and The Bank of New York (the
"Trustee"),  on a private placement basis pursuant to an exemption under Section
4(2) of the United States Securities Act of 1933 (the "Securities Act").

         Holders  (including  subsequent  transferees) of the Offered Securities
will have the registration rights set forth in the Registration Rights Agreement
of even date herewith (the "Registration  Rights Agreement"),  among the Company
and the Purchasers.  Pursuant to the  Registration  Rights Agreement the Company
has  agreed  to  file  with  the   Securities  and  Exchange   Commission   (the
"Commission")  (i) a registra tion statement (the "Exchange  Offer  Registration
Statement")  under the Securities Act registering the offering of senior secured
notes (the  "Exchange  Securities")  identical in all  material  respects to the
Offered Securities  (except that the Exchange  Securities will not contain terms
with respect to transfer restrictions) to be offered in exchange for the Offered
Securities (the "Exchange Offer") and (ii) under certain circumstances,  a shelf
registration statement pursuant to Rule 415 under the Securities Act (the "Shelf
Registration Statement").

         The Company hereby agrees with the Purchasers as follows:

         2.   Representations  and  Warranties  of  the  Company.   The  Company
represents and warrants to, and agrees with, the several Purchasers that:

                  (a) A  preliminary  offering  circular has been prepared and a
         final  offering  circular  relating to the Offered  Securities  will be
         prepared  by  the  Company.  Such  preliminary  offering  circular  and
         offering  circular,  as  supplemented as of the date of this Agreement,
         together with the  documents  listed in Schedule B hereto and any other
         document  approved  by the  Company  for  use in  connection  with  the
         contemplated  resale  of  the  Offered   Securities,   are  hereinafter
         collectively  referred to as the  "Offering  Document".  On the date of
         this Agreement,  

                                        1



         the perliminary offering circular does not include and
         the final offering circular in the form used by the Purchasers to
         confirm sales and on the Closing Date will not include any
         untrue  statement of a material fact or omit to state any material fact
         required  to be  stated  therein  or  necessary  in  order  to make the
         statements  therein, in the light of the circumstances under which they
         were made,  not  misleading.  The preceding  sentence does not apply to
         statements  in or  omissions  from the  Offering  Document  based  upon
         written  information  furnished to the Company by any Purchaser through
         Credit Suisse First Boston  Corporation  ("CSFB")  specifically for use
         therein,  it being understood and agreed that the only such information
         is that  described as such in Section 7(b).  Except as disclosed in the
         Offering Document, on the date of this Agreement,  the Company's Annual
         Report on Form 10-K most  recently  filed with the  Commission  and all
         subsequent  reports  (collectively,  the "Exchange Act Reports")  which
         have been filed by the  Company  with the  Commission  or sent to stock
         holders pursuant to the Securities  Exchange Act of 1934 (the "Exchange
         Act") do not include any untrue statement of a material fact or omit to
         state any material fact  necessary to make the statements  therein,  in
         the  light  of the  circumstances  under  which  they  were  made,  not
         misleading.  Such documents,  when they were filed with the Commission,
         conformed in all material  respects to the requirements of the Exchange
         Act and the rules and  regulations  of the Commission  thereunder.  The
         preceding  sentence does not apply to  statements in or omissions  from
         the Offering Document based upon written  information  furnished to the
         Company by any Purchaser through CSFB specifically for use therein,  it
         being  understood  and agreed  that the only such  information  is that
         described as such in Section 7(b).

                  (b) The Company has been duly  incorporated and is an existing
         corporation  in good standing  under the laws of the State of Delaware,
         with power and authority  (corporate  and other) to own its  properties
         and conduct its business as described in the Offering Document; and the
         Company is duly  qualified to do business as a foreign  corporation  in
         good  standing in all other  jurisdictions  in which its  ownership  or
         lease  of  property  or the  conduct  of  its  business  requires  such
         qualification, except to the extent that the failure to be so qualified
         or be in good standing would not have a material  adverse effect on the
         Company and its Subsidiaries (as defined below), taken as a whole.

                  (c) Each  Subsidiary  of the  Company  (i)  other  than  those
         Subsidiaries specified in clause (ii) of this paragraph (2)(c) has been
         duly  incorporated,  is  validly  existing  as a  corpora  tion in good
         standing under the laws of the jurisdiction of its  incorporation,  and
         has  corporate  power and  authority to own its property and to conduct
         its business as described in the Offering  Document or (ii) that is not
         a  corporation  is a limited  partnership,  has been duly formed and is
         validly  existing as a limited  partnership  in good standing under the
         laws of the  jurisdiction  of its  formation,  and has full  power  and
         authority  to own its property and to conduct its business as described
         in the Offering  Document;  and, in either case,  is duly  qualified to
         transact business and is in good standing in each jurisdiction in which
         the  conduct of its  business or its  ownership  or leasing of property
         required such  qualification,  except to the extent that the failure to
         be so  qualified  or be in good  standing  would  not  have a  material
         adverse effect on the Company and its  Subsidiaries,  taken as a whole;
         and the Company is not a general  partner in any  partnership.  As used
         herein,  the term "Subsidiary" shall have the meaning ascribed to it in
         the Indenture.

                  (d) The Indenture has been duly authorized by the Company; the
         Offered  Securities have been duly authorized by the Company;  and when
         the Offered  Securities  are  delivered  and paid for  pursuant to this
         Agreement and the Indenture on the Closing Date (as defined below), the
         Indenture  will have been duly  executed and  delivered  (assuming  due
         authorization,  execution  and delivery by the  Trustee),  such Offered
         Securities  will have been duly  executed,  authenticated,  issued  and
         delivered (assuming authentication by the Trustee in accordance with
         the provisions of the  Indenture)  and will conform to the  description
         thereof  contained in 


                                       2



         the Offering  Document and the Indenture and such
         Offered   Securities   will   constitute   valid  and  legally  binding
         obligations of the Company (and the Offered Securities will be entitled
         to the benefits in the Indenture), enforceable in accordance with their
         terms,  except as (i) the  enforceability  thereof  may be  limited  by
         bankruptcy,  insolvency  or similar laws  affecting  creditors'  rights
         generally  and (ii)  rights of  acceleration  and the  availability  of
         equitable  remedies may be limited by equitable  principles  of general
         applicability.

                  (e) Except as disclosed in the Offering Document, there are no
         contracts,  agreements  or  understandings  between the Company and any
         person that would give rise to a valid claim against the Company or any
         Purchaser  for a  brokerage  commission,  finder's  fee or  other  like
         payment with respect to this Offering.

                  (f)  The   Registration   Rights   Agreement   has  been  duly
         authorized,  executed and  delivered by the Company and  (assuming  due
         authorization,  execution and delivery by the Purchasers) constitutes a
         valid and binding agreement of the Company,  enforceable in accor dance
         with its terms except as (i) the enforceability  thereof may be limited
         by bankruptcy,  insolvency or similar laws affecting  creditors' rights
         generally  and (ii)  rights of  acceleration  and the  availability  of
         equitable remedies may be limited by equitable principles of general ap
         plicability.

                  (g) No  consent,  approval,  authorization,  or order  of,  or
         filing with, any  governmental  agency or body or any court is required
         for  the  consummation  of  the  transactions  contemplat  ed  by  this
         Agreement  in  connection  with the  issuance  and sale of the  Offered
         Securities  by the  Company,  except such as may be required by (i) the
         securities or Blue Sky laws of the various  states in  connection  with
         the offer and sale of the Offered Securities and (ii) the securities or
         Blue  Sky  laws  of  the  various  states  and  the  Securities  Act in
         connection with the offer of the Exchange Securities.

                  (h) The execution,  delivery and performance of the Indenture,
         this Agreement, the Registration Rights Agreement, and the issuance and
         sale of the  Offered  Securities  and  compliance  with the  terms  and
         provisions  thereof  will not result in a breach or violation of any of
         the terms  and  provisions  of, or  constitute  a  default  under,  any
         statute,  any rule,  regulation or order of any governmental  agency or
         body or any court,  domestic or foreign,  having  jurisdiction over the
         Company or any Subsidiary of the Company or any of their properties, or
         any agreement or instrument to which the Company or any such Subsidiary
         is a party or by which the Company or any such  Subsidiary  is bound or
         to which any of the properties of the Company or any such Subsidiary is
         subject,  or the  charter  or  by-laws  of  the  Company  or  any  such
         Subsidiary,  and the Company has full power and authority to authorize,
         issue  and  sell  the  Offered   Securities  as  contemplated  by  this
         Agreement.

                  (i)  This  Agreement  has  been  duly  authorized,  executed 
         and delivered by the Company.

                  (j) Except as disclosed in the Offering Document,  the Company
         and its  Subsidiaries  have  good  and  marketable  title  to all  real
         properties  and all other  properties and assets owned by them, in each
         case free from liens,  encumbrances  and defects that would  materially
         affect the value thereof or materially  interfere  with the use made or
         to be made  thereof by them;  and except as  disclosed  in the Offering
         Document,  the  Company  and its  Subsidiaries  hold any leased real or
         personal property under valid and enforceable leases with no exceptions
         that would materially interfere with the use made or to be made thereof
         by them.

                  (k)  The  Company  and  its   Subsidiaries   possess  adequate
         certificates, authorities or permits issued by appropriate governmental
         agencies or bodies  necessary  to conduct the  


                                       3



         business  now  operated  by them and have not  received  any  notice of
         proceedings  relating to the  revocation  or  modification  of any such
         certificate,  authority or permit that, if determined  adversely to the
         Company  or any  of  its  Subsidiaries,  would  individually  or in the
         aggregate  have a  material  adverse  effect  on the  Company  and  its
         Subsidiaries taken as a whole.

                  (l) No labor  dispute with the employees of the Company or any
         Subsidiary exists or, to the knowledge of the Company, is imminent that
         might  have  a  material   adverse   effect  on  the  Company  and  its
         Subsidiaries taken as a whole.

                  (m) Except as disclosed in the Offering Document,  neither the
         Company nor any of its Subsidiaries is in violation of any statute, any
         rule, regulation,  decision or order of any governmental agency or body
         or any court,  domestic  or foreign,  relating to the use,  disposal or
         release of hazardous or toxic  substances or relating to the protection
         or  restoration  of the  environment  or human exposure to hazardous or
         toxic  substances  (collectively,   "environmen  tal  laws"),  owns  or
         operates any real  property  contaminated  with any  substance  that is
         subject to any environmental  laws, is liable for any off-site disposal
         or contamination  pursuant to any environmental  laws, or is subject to
         any  claim  relating  to  any  environmental   laws,  which  violation,
         contamination,   liability  or  claim  would  individually  or  in  the
         aggregate  have a  material  adverse  effect  on the  Company  and  its
         Subsidiaries  taken as a whole;  and the  Company  is not  aware of any
         pending investigation which might lead to such a claim.

                  (n) Except as disclosed in the Offering Document, there are no
         pending actions, suits or proceedings against or affecting the Company,
         any of its Subsidiaries or any of their respective  properties that, if
         determined  adversely to the Company or any of its Subsidiaries,  would
         individually or in the aggregate have a material  adverse effect on the
         condition  (financial  or other),  business,  properties  or results of
         operations  of the Company and its  Subsidiaries  taken as a whole,  or
         would  materially  and  adversely  affect the ability of the Company to
         perform its obligations under the Indenture or this Agreement, or which
         are  otherwise  material  in the  context  of the  sale of the  Offered
         Securities;  and no such actions,  suits or proceedings  are threatened
         or, to the Company's knowledge, contemplated.

                  (o) The financial statements included in the Offering Document
         present   fairly  the  financial   position  of  the  Company  and  its
         consolidated  Subsidiaries  as of the dates shown and their  results of
         operations  and cash  flows  for the  periods  shown,  and,  except  as
         otherwise disclosed in the Offering Document, such financial statements
         have  been  prepared  in  confor  mity  with  the  generally   accepted
         accounting  principles  in the United  States  applied on a  consistent
         basis and the  assumptions  used in preparing  the pro forma  financial
         statements included in the Offering Document provide a reasonable basis
         for presenting the  significant  effects  directly  attributable to the
         transactions  or  events  described  therein,  the  related  pro  forma
         adjustments give appropriate effect to those  assumptions,  and the pro
         forma  columns  therein   reflect  the  proper   application  of  those
         adjustments  to  the  corresponding   historical   financial  statement
         amounts.

                  (p)  The  statistical  and  market-related  data  (other  than
         market-related  data and  statistical  data  provided  by the  Company)
         included in the Offering  Document are based on or derived from sources
         which the  Company  believes  to be  reliable  and  accurate,  it being
         understood,  however,  that the Company has  conducted  no  independent
         investigation of the accuracy thereof.

                  (q) Except as disclosed in the  Offering  Document,  since the
         date  of  the  latest  audited  financial  statements  included  in the
         Offering  Document there has been no material  adverse change,  nor any
         development or event involving a prospective  material  adverse change,
         in the 

                                       4


         condition  (financial  or other),  business,  properties  or results of
         operations of the Company and its Subsidiaries  taken as a whole,  and,
         except as disclosed in or contemplated by the Offering Document,  there
         has been no dividend or distribution of any kind declared, paid or made
         by the Company on any class of its capital stock.

                  (r) The Company is not an open-end  investment  company,  unit
         investment  trust  or  face-amount  certificate  company  that is or is
         required  to  be  registered  under  Section  8 of  the  United  States
         Investment  Company Act of 1940 (the "Investment  Company Act"), nor is
         it a closed-end  investment company required to be registered,  but not
         registered, thereunder; and the Company is not and, after giving effect
         to the offering and sale of the Offered  Securities and the application
         of the proceeds thereof as described in the Offering Document, will not
         be an "investment company" as defined in the Investment Company Act.

                  (s) No  securities  of the same class  (within  the meaning of
         Rule 144A(d)(3) under the Securities Act) as the Offered Securities are
         listed on any national  securities  exchange registered under Section 6
         of  the  Exchange  Act  or  quoted  in a  U.S.  automated  inter-dealer
         quotation system.

                  (t) The  offer  and  sale  of the  Offered  Securities  by the
         Company to the several  Purchasers in the manner  contemplated  by this
         Agreement  will be exempt from the registra  tion  requirements  of the
         Securities  Act  by  reason  of  Section  4(2)  thereof;  and it is not
         necessary to qualify the Indenture in respect of the Offered Securities
         under the United  States Trust  Indenture  Act of 1939, as amended (the
         "Trust Indenture Act").

                  (u) Neither the Company, nor any of its affiliates (as defined
         in Rule  501(b) of  Regulation  D under the  Securities  Act),  nor any
         person  acting on its or their  behalf (i) has,  within  the  six-month
         period prior to the date hereof,  offered or sold in the United  States
         or to any U.S.  person (as such terms are defined in Regulation S under
         the Securities Act) the Offered  Securities or any security of the same
         class or series as the Offered  Securities  or (ii) has offered or will
         offer or sell the Offered  Securities (A) in the United States by means
         of any form of general  solicitation or general  advertising within the
         meaning of Rule 502(c) under the  Securities Act or (B) with respect to
         any  securities  sold in reliance on Rule 903 of Regulation S, by means
         of any directed  selling  efforts  within the meaning of Rule 902(b) of
         Regulation  S. The  Company has not entered and will not enter into any
         contractual  arrange  ment  with  respect  to the  distribution  of the
         Offered Securities except for this Agreement.

                  (v) Neither the  Company  nor any of its  Subsidiaries  is (i)
         subject to regulation as a "holding company" or a "Subsidiary  company"
         of a holding company or a "public  utility  company" under Section 2(a)
         of the Public  Utility  Holding  Company  Act of 1935  ("PUHCA"),  (ii)
         subject to regulation  under the Federal Power Act, as amended ("FPA"),
         other than as contemplated by 18 C.F.R. Sec 292.601(c) or (iii) subject
         to any state law or  regulation  with respect to rates or the financial
         or  organizational  regulation  of  electric  utilities,  other than as
         contemplated by 18 C.F.R. Sec 292.602(c).


                  (w) Each of the power generation projects in which the Company
         or its Subsidiaries  has an interest (the "Projects")  which is subject
         to the requirements under the Public Utility Regulatory Policies Act of
         1978, as amended (16 U.S.C.  Sec 796, et seq.),  and the regulations of
         the  Federal  Energy   Regulatory   Commission   ("FERC")   promulgated
         thereunder,  as  amend  ed  from  time  to  time,  necessary  to  be  a
         "qualifying  cogeneration  facility"  and/or a "qualifying  small power
         production facility" meets such requirements.

                  (x) The  Company  is  subject  to  Section  13 or 15(d) of the
         Exchange Act.


                                       5



         3. Purchase,  Sale and Delivery of Offered Securities.  On the basis of
the representations,  warranties and agreements herein contained, but subject to
the terms and  conditions  herein set forth,  the Company  agrees to sell to the
Purchasers,  and the Purchasers  agree,  severally and not jointly,  to purchase
from the  Company,  at a purchase  price of  99.6353%  of the  principal  amount
thereof  plus  accrued  interest  from  July 8,  1997 to the  Closing  Date  (as
hereinafter  defined) the respective  principal amount of Offered Securities set
forth opposite the names of the several Purchasers in Schedule A hereto.

         The Company will  deliver  against  payment of the  purchase  price the
Offered  Securities in the form of one or more  permanent  global  securities in
definitive  form  (the  "Global  Securities")  deposited  with  the  Trustee  as
custodian for The Depository Trust Company ("DTC") and registered in the name of
Cede & Co., as nominee for DTC.  Interests in any  permanent  Global  Securities
will  be held  only in  book-entry  form  through  DTC,  except  in the  limited
circumstances  described  in the  Offering  Document.  Payment  for the  Offered
Securities  shall be made by the  Purchasers  in  Federal  (same  day)  funds by
official check or checks or wire transfer to an account previously designated to
CSFB by the Company at a bank acceptable to CSFB at the office of Skadden, Arps,
Slate,  Meagher & Flom LLP at 10:00 A.M. (New York time), on July 8, 1997, or at
such other time not later than seven full business  days  thereafter as CSFB and
the Company determine, such time being herein referred to as the "Closing Date",
against  delivery to the Trustee as custodian  for DTC of the Global  Securities
representing all of the Offered  Securities.  The Global Securities will be made
available for inspection at the above office of Skadden,  Arps, Slate, Meagher &
Flom LLP at least 24 hours prior to the Closing Date.

         4.  Representations  by  Purchasers;  Resale  by  Purchasers.  

                  (a) Each Purchaser  severally  represents and warrants to the
Company that it is an "accredited  investor"  within the meaning of Regulation D
under the Securities Act.

                  (b) Each  Purchaser  severally  acknowledges  that the Offered
         Securities  have not been  registered  under the Securities Act and may
         not be  offered  or sold  within  the  United  States or to, or for the
         account  or  benefit  of,  U.S.   persons  except  in  accordance  with
         Regulation  S  or  pursuant  to  an  exemption  from  the  registration
         requirements of the Securities Act. Each Purchaser severally represents
         and agrees that it has offered and sold the Offered Securities and will
         offer and sell the Offered Securities (i) as part of their distribution
         at any time and (ii) otherwise  until the later of the  commencement of
         the offering and the Closing Date,  only in  accordance  with Rule 144A
         ("Rule  144A") or Rule 903  under the  Securities  Act.  Accord  ingly,
         neither such  Purchaser nor its  affiliates,  nor any persons acting on
         its or their  behalf,  have  engaged  or will  engage  in any  directed
         selling  efforts  with  respect  to the  Offered  Securities,  and such
         Purchaser, its affiliates and all persons acting on its or their behalf
         have   complied  and  will  comply  with  the   offering   restrictions
         requirement  of Regulation S. Terms used in this paragraph (b) have the
         meanings given to them by Regulation S.

                  (c) Each  Purchaser  severally  agrees that it and each of its
         affiliates  has not  entered  and will not enter  into any  contractual
         arrangement with respect to the distribution of the Offered  Securities
         except  for  any  such   arrangements  with  the  other  Purchasers  or
         affiliates of the other Purchasers or with the prior written consent of
         the Company.

                  (d) Each  Purchaser  severally  agrees that it and each of its
         affiliates  will not offer or sell the Offered  Securities  by means of
         any form of general  solicitation  or general  advertising,  within the
         meaning of Rule 502(c) under the  Securities  Act,  including,  but not
         limited   to  (i)  any   advertisement,   article,   notice   or  other
         communication published in any newspaper,  magazine or similar media or
         broadcast  over  television  or radio,  or (ii) any  seminar or meeting
         whose  attendees  have been  invited  by any  general  solicitation  or
         general  advertising.  Each Purchaser 

                                       6


         severally agrees, with respect to resales made in reliance on Rule 144A
         of  any  of  the  Offered  Securities,   to  deliver  either  with  the
         confirmation  of such resale or otherwise  prior to  settlement of such
         resale  a  notice  to the  effect  that  the  resale  of  such  Offered
         Securities  has  been  made in  reliance  upon the  exemption  from the
         registration requirements of the Securities Act provided by Rule 144A.

         5.   Certain Agreements of the Company.  The Company agrees with the 
         several Purchasers that:

                  (a) The  Company  will  arrange for the  qualification  of the
         Offered  Securities for sale and the determination of their eligibility
         for  investment  under the laws of such states in the United  States as
         CSFB designates and will continue such qualifications in effect so long
         as required for the resale of the Offered  Securities by the Purchasers
         provided  that the Company will not be required to qualify as a foreign
         corporation  or to file a general  consent to service of process in any
         such state.

                  (b) During the period of two years hereafter, the Company will
         furnish to CSFB and, upon request, to each of the other Purchasers,  as
         soon as  practicable  after the end of each fiscal  year, a copy of its
         annual  report to  shareholders  for such year;  and the  Company  will
         furnish to CSFB and, upon request,  to each of the other Purchasers (i)
         as soon as available,  a copy of each report and any  definitive  proxy
         statement of the Company filed with the  Commission  under the Exchange
         Act or mailed to  shareholders  and (ii) from time to time,  such other
         information concerning the Company as CSFB may reasonably request.

                  (c) During the period of two years after the Closing Date, the
         Company  will,  upon  request,  furnish  to  CSFB,  each  of the  other
         Purchasers  and  any  holder  of  Offered  Securities  a  copy  of  the
         restrictions on transfer applicable to the Offered Securities.

                  (d) During the period of two years after the Closing Date, the
         Company will not, and will not permit any of its affiliates (as defined
         in Rule 144 under the  Securities  Act) to,  resell any of the  Offered
         Securities that have been reacquired by any of them.

                  (e) During the period of two years after the Closing Date, the
         Company will not be or become,  an open-end  investment  company,  unit
         investment  trust  or  face-amount  certificate  company  that is or is
         required to be  registered  under Section 8 of the  Investment  Company
         Act,  and is not, and will not be or become,  a  closed-end  investment
         company  required  to be  registered,  but not  registered,  under  the
         Investment Company Act.

                  (f) The  Company  will  pay  all  expenses  incidental  to the
         performance of its obliga tions under this Agreement, the Indenture and
         the Registration Rights Agreement,  including (i) the fees and expenses
         of the  Trustee and its  professional  advisers;  (ii) all  expenses in
         connection  with the execution,  issue,  authentication,  packaging and
         initial  delivery  of  the  Offered  Securities,  the  preparation  and
         printing of this Agreement, the Offered Securities,  the Indenture, the
         Registration Rights Agreement, the Offering Document and amendments and
         supplements  thereto,  and any other document relating to the issuance,
         offer, sale and delivery of the Offered  Securities;  (iii) the cost of
         qualifying the Offered Securities for trading in the
         Private  Offerings,  Resale  and  Trading  through  Automated  Linkages
         (PORTAL) market and any expenses  incidental  thereto and (iv) the cost
         of any advertising approved by the Company in connection with the issue
         of the Offered  Securities.  The Company will  reimburse the Purchasers
         for any expenses (including fees and disbursements of counsel) incurred
         by them in connection with  qualification of the Offered Securities for
         sale under the laws of such  jurisdictions  as CSFB  designates and the
         printing  of  memoranda  relating  thereto,  for any  fees  charged  by
         investment  rating agencies for the rating of the  Securities,  for all
         travel  expenses  


                                       7


         of the  Purchasers  and the  Company's  officers and  employees and any
         other  expenses of the  Purchasers  and the Company in connection  with
         attending  or hosting  meetings  with prospec  tive  purchasers  of the
         Offered  Securities  and for  expenses  incurred  in  distributing  the
         Offering Document (including any amendments and supplements thereto) to
         the Purchasers.

                  (g) In  connection  with the  offering,  until CSFB shall have
         notified the Company and the other  Purchasers of the completion of the
         resale of the  Offered  Securities,  neither the Company nor any of its
         affiliates has or will, either alone or with one or more other persons,
         bid  for  or  purchase  for  any  account  in  which  it or  any of its
         affiliates has a beneficial  interest any Offered Securities or attempt
         to induce any person to purchase any Offered Securities; and neither it
         nor any of its  affiliates  will make bids or purchases for the purpose
         of creating actual,  or apparent,  active trading in, or of raising the
         price of, the Offered Securities.

                  (h)  Except  as   contemplated   by  the   Indenture  and  the
         Registration  Rights Agreement,  for a period of 30 days after the date
         of the initial  offering of the Offered  Securities by the  Purchasers,
         the  Company  will  not  offer,  sell,  contract  to sell,  pledge,  or
         otherwise  dispose  of,  directly  or  indirectly,  any  United  States
         dollar-denominated debt securities issued or guaran teed by the Company
         and having a maturity of more than one year from the date of issue. The
         Company will not at any time offer,  sell,  contract to sell, pledge or
         otherwise  dispose of,  directly or indirectly,  any  securities  under
         circumstances  where such offer, sale, pledge,  contract or disposition
         would cause the  exemption  afforded by Section 4(2) of the  Securities
         Act to cease to be applicable to the offer and sale of the Securities.

         6. Conditions of the Obligations of the Purchasers.  The obligations of
the several  Purchas ers to purchase and pay for the Offered  Securities will be
subject to the accuracy of the  representa  tions and  warranties on the part of
the Company herein, to the accuracy of the statements of officers of the Company
made pursuant to the provisions hereof, to the performance by the Company of its
obligations hereunder and to the following additional conditions precedent:

              (a) The Purchasers shall have received:

                  (i) letters,  dated the date of this Agreement and the Closing
              Date, of Arthur  Andersen  substantially  in the form of Exhibit A
              hereto  to the  Purchasers  concerning  certain  of the  financial
              information  with  respect  to the  Company  as set  forth  in the
              Offering Document;

                  (ii)letters,  dated the date of this Agreement and the Closing
              Date,  of Moss  Adams LLP  substantially  in the form of Exhibit B
              hereto  to the  Purchasers  concerning  certain  of the  financial
              information  with respect to the Company set forth in the Offering
              Document; and

                  (iii)  letters,  dated  the  date  of this  Agreement  and the
              Closing  Date, of Ernst & Young LLP  substantially  in the form of
              Exhibit  C hereto  to the  Purchasers  concerning  certain  of the
              financial  information with respect to the company as set forth in
              the Offering Docu ment.

              (b) Subsequent to the execution and delivery of this Agreement and
         prior to the  Closing  Date,  there  shall  not have  occurred  (i) any
         change, or any development or event involving a prospective  change, in
         the condition (financial or other), business,  properties or results of
         operations of the Company or its Subsidiaries which, in the judgment of
         a majority in interest of the  Purchasers,  including CSFB, is material
         and adverse and makes it  impractical  or  inadvisable  to proceed with
         completion  of the  offering or the sale of and payment for the Offered
         Securities;  (ii) any  downgrading in the rating of any debt securities
         of  the  Company  by  


                                       8


         any "nationally recognized statistical rating organization" (as defined
         for purposes of Rule 436(g) under the  Securities  Act),  or any public
         announcement  that any such  organization  has  under  surveillance  or
         review its rating of any debt  securities of the Company (other than an
         announcement with positive implications of a possible upgrading, and no
         implication  of a  possible  downgrading,  of such  rating);  (iii) any
         suspension or limitation of trading in securities  generally on the New
         York Stock  Exchange  or any  setting of minimum  prices for trading on
         such  exchange,  or any  suspension of trading of any securities of the
         Company on any  exchange or in the  over-the-counter  market;  (iv) any
         banking  moratorium  declared by U.S. Federal or, New York authorities;
         or (v) any outbreak or  escalation  of major  hostilities  in which the
         United States is involved,  any  declaration  of war by Congress or any
         other substantial  national or international  calamity or emergency if,
         in the judgment of a majority in interest of the  Purchasers  including
         CSFB,  the  effect  of  any  such  outbreak,  escalation,  declaration,
         calamity or emergency  makes it  impractical  or inadvisable to proceed
         with  completion of the offering or sale of and payment for the Offered
         Securities.

              (c) You shall have received on the Closing Date a  certificate  or
         certificates, dated the Closing Date and signed by an executive officer
         of the Company,  to the effect set forth in clause (b)(ii) above and to
         the effect  that the  representations  and  warranties  of the  Company
         contained in this Agreement are true and correct as of the Closing Date
         and that the  Company  has  complied  with  all of the  agreements  and
         satisfied  all of  the  conditions  on  its  part  to be  performed  or
         satisfied on or before the Closing Date.

              The  officers   signing  and   delivering   such   certificate  or
         certificates   may  rely  upon  the  best  of  their  knowledge  as  to
         proceedings threatened.

              (d) The  Purchasers  shall have  received  an  opinion,  dated the
         Closing  Date,  of  Brobeck,  Phleger & Harrison  LLP,  counsel for the
         Company, that:

                  (i)  the  Company  has  been  duly  incorporated,  is  validly
              existing as a corporation  in good standing  under the laws of the
              State of Delaware,  has the corporate  power and au thority to own
              its  property  and to conduct  its  business as  described  in the
              Offering Document,  and is duly qualified to transact business and
              is in good  standing in each juris diction in which the conduct of
              its  business  or its  ownership  or leasing of property re quires
              such qualification, except to the extent that the failure to be so
              qualified or be in good standing would not have a material adverse
              effect on the Company and its Subsid iaries, taken as a whole;

                  (ii)this Agreement has been duly authorized, executed and 
              delivered by the Company;

                  (iii) the  Indenture  has been duly  authorized,  executed and
              delivered  by the Company and is a valid and binding  agreement of
              the Company,  enforceable  in accordance  with its terms except as
              (a) the  enforceability  thereof  may be  limited  by  bankruptcy,
              insolvency or similar laws affecting  creditors'  rights generally
              and (b) rights of acceleration  and the  availability of equitable
              remedies may be limited by equitable principles of general applica
              bility;  and  the  Indenture  is in  such  form  that  it may be
              qualified  under the Trust Inden ture Act, in compliance  with the
              terms of the  provisions  of the  Registration  Rights  Agree ment
              without material modification;

                  (iv) the Offered  Securities  have been duly authorized by the
              Company  and,  when the  Offered  Securities  are  executed by the
              Company and  authenticated  by the Trustee in accordance  with the
              provisions  of the  Indenture and delivered to and paid for by the
              Purchasers in  accordance  with the terms of this  Agreement,  the
              Offered  Securities  will  be  entitled  to  


                                       9


              the  benefits  of the  Indenture  and  will be valid  and  binding
              obligations of the Company,  enforceable in accordance  with their
              terms except as (a) the  enforceability  thereof may be limited by
              bankruptcy, insolvency or similar laws affecting creditors' rights
              generally and (b) rights of acceleration  and the  availability of
              equitable  remedies  may be limited  by  equitable  principles  of
              general applicability;

                  (v)  the   Registration   Rights   Agreement   has  been  duly
              authorized,  executed and  delivered by the Company and  (assuming
              due  authorization,  execution  and  delivery  by the  Purchasers)
              constitutes  a  valid  and  binding   agreement  of  the  Company,
              enforceable  in  accordance  with  its  terms  except  as (i)  the
              enforceability  thereof may be limited by bank ruptcy,  insolvency
              or similar laws  affecting  creditors'  rights  generally and (ii)
              rights of acceleration and the availability of equitable  remedies
              may be limited by equitable prin ciples of general applicability;

                  (vi) the  execution  and  delivery  by the Company of, and the
              performance  by  the  Company  of  its  obligations   under,  this
              Agreement,   the  Offered   Securities,   the  Indenture  and  the
              Registration Rights Agreement will not contravene any provision of
              applicable  law  or  the  certificate  of  incorporation,  bylaws,
              partnership  agreement  or other  organizational  documents of the
              Company or any  Subsidiary  of the Company  or, to such  counsel's
              knowledge,  any  agreement  or other  instrument  binding upon the
              Company or any Subsid iary of the Company  that is material to the
              Company  or  its  Subsidiaries  taken  as a  whole,  or,  to  such
              counsel's  knowledge,   any  judgment,  order  or  decree  of  any
              governmental  body,  agency or court having  jurisdiction over the
              Company  or  any  Subsidiary  of  the  Company,  and  no  consent,
              approval,  authorization  or  order of or  qualification  with any
              governmental body or agency is required for the performance by the
              Company of its  obligations  under  this  Agreement,  the  Offered
              Securities,  the Indenture and the Registra tion Rights Agreement,
              except such as may be required by (i) the  securities  or Blue Sky
              laws of the various  states in connection  with the offer and sale
              of the Offered Securities and (ii) the securities or Blue Sky laws
              of the various states and the  Securities  Act in connection  with
              the offer of the Exchange Securities;

                  (vii)  the  statements  in the  Offering  Document  under  the
              captions  "Description  of  Notes,"  "Plan  of  Distribution"  and
              "Transfer  Restrictions,"  insofar as such  statements  constitute
              summaries of the legal matters, documents and proceedings referred
              to therein, fairly present the information called for with respect
              to such  legal  matters,  documents  and  proceedings  and  fairly
              summarize the matters referred to therein;

                  (viii)  after due  inquiry,  such counsel does not know of any
              legal or governmental  proceedings  pending or threatened to which
              the Company or any of its  Subsidiaries is a party or to which any
              of the  properties  of the Company or any of its  Subsidiaries  is
              subject other than proceedings  fairly  summarized in all material
              respects  in the  Offering  Document  and  proceedings  which such
              counsel  believes are not likely to have a material adverse effect
              on the Company and its  Subsidiaries  taken as a whole,  or on the
              power or
              ability  of the  Company  to perform  its  obligations  under this
              Agreement,   the  Indenture,   the  Offered   Securities  and  the
              Registration  Rights  Agreement or to consummate the transac tions
              contemplated by the Offering Document;

                  (ix) based upon the representations, warranties and agreements
              of the Company in paragraphs  2(s) and 2(u) of this  Agreement and
              of the  Purchasers  in  paragraph 4 of this  Agreement  and on the
              representations  and agreements in the Offering Document under the
              caption "Transfer Restrictions," it is not necessary in connection


                                       10

              with the offer, sale and delivery of the Offered Securities to the
              Purchasers  under this Agreement or in connection with the initial
              resale of such Offered  Securities by the Purchasers in accordance
              with  paragraph  4 of  this  Agreement  to  register  the  Offered
              Securities  under the  Securities  Act or to qualify the Indenture
              under the Trust Indenture Act, it being understood that no opinion
              is  expressed  as  to  any   subsequent   resale  of  any  Offered
              Securities; and

                  (x) the  Company is not an  "investment  company" or an entity
              "controlled"  by an "in  vestment  company,"  as  such  terms  are
              defined in the Investment Company Act of 1940, as amended.

         Such counsel shall also include a statement to the effect that no facts
have come to such  counsel's  attention  that would lead such counsel to believe
that  (except  for  financial  statements,  sched ules and other  financial  and
statistical  information  as to which such counsel need not express any be lief)
the  Offering  Document  when issued did not, and as of the date such opinion is
delivered does not,  contain any untrue  statement of a material fact or omit to
state a material fact necessary in order to make the statements  therein, in the
light of the circumstances under which they were made, not misleading.

              (e) You shall  have  received  on the  Closing  Date an opinion of
         Joseph E. Ronan,  Jr.,  General  Counsel of the Company,  to the effect
         that:

                  (i) each  Subsidiary  of the  Company  (x)  other  than  those
              Subsidiaries  specified in clause (y) of this paragraph  (6)(e)(i)
              has been duly  incorporated,  is validly existing as a corporation
              in  good  standing  under  the  laws  of the  jurisdiction  of its
              incorporation,  and has  corporate  power and authority to own its
              property  and to conduct its business as described in the Offering
              Document  or (y) that is not a  corporation  is a limited  partner
              ship,  has been duly  formed and is validly  existing as a limited
              partnership in good standing under the laws of the jurisdiction of
              its  formation,  and  has  full  power  and  authority  to own its
              property  and to conduct its business as described in the Offering
              Document  and,  in either  case,  is duly  qualified  to  transact
              business  and is in good stand ing in each  jurisdiction  in which
              the  conduct  of its  business  or its  ownership  or  leasing  of
              property  requires such  qualification,  except to the extent that
              the failure to be so  qualified or be in good  standing  would not
              have  a  material   adverse   effect  on  the   Company   and  its
              Subsidiaries,  taken as a whole;  and the Company is not a general
              partner in any partner ship;

                  (ii)the Company and each of its  Subsidiaries has obtained all
              necessary consents,  authorizations,  approvals, orders, licenses,
              certificates   and   permits  of  and  from,   and  has  made  all
              declarations and filings with, all foreign,  federal, state, local
              and  other  gov   ernmental   authorities,   all   self-regulatory
              organizations and all courts and other tribunals, required to own,
              lease,  license,  operate and use its properties and assets and to
              conduct  its  business  in the manner  described  in the  Offering
              Document, except to the extent that the failure to obtain, declare
              or file would not have a material  adverse  effect on the  Company
              and its Subsidiaries, taken as a whole;

                  (iii) the  contracts  and  agreements  of the  Company and its
              Subsidiaries  and  affiliates  described in the Offering  Document
              under  "Business --  Description  of  Facilities  -- Power Plants"
              conform  in all  material  respects  to the  descriptions  thereof
              contained  in the Offering  Document,  and the  statements  in the
              Offering Document under the captions  "Management,"  "Business ---
              Legal  Proceedings"  and "Business -- Government  Regula tions" in
              each case insofar as such statements  constitute  summaries of the
              legal  matters,  documents  and  proceedings  referred to therein,
              fairly  present the  information  called for with  respect to such
              legal matters,  documents and proceedings and fairly summarize the
              matters referred to therein;


                                       11


                  (iv) such  counsel is of the opinion that the Company and each
              Subsidiary  of the Company (i) is in  compliance  with any and all
              applicable  environmental  laws,  (ii) has  received  all permits,
              licenses  or  other  approvals  required  of it  under  applicable
              environ  mental  laws to  conduct  its  business  and  (iii) is in
              compliance  with all  terms  and  conditions  of any such  permit,
              license or approval,  except where such noncompliance with environ
              mental  laws,  failure to receive  required  permits,  licenses or
              other approvals or failure to comply with the terms and conditions
              of such permits, licenses or approvals would not, singly or in the
              aggregate, have a material adverse effect on the Company; and

                  (v) neither the  Company  nor any of its  Subsidiaries  is (i)
              subject to  regulation  as a "holding  company"  or a  "Subsidiary
              company" of a holding company or an "affiliate" of a Subsidiary or
              holding company or a "public  utility  company" under Section 2(a)
              of PUHCA,  (ii) subject to regulation under the FPA, other than as
              contemplated  by 18 C.F.R.  Sec 292.601(c) or (iii) subject to any
              state law or regulation with respect to the rates or the financial
              or organizational regulation of electric utilities,  other than as
              contemplated by 18 C.F.R. Sec 292.602(c).

              (f) You shall  have  received  on the  Closing  Date an opinion of
         Skadden,  Arps,  Slate,  Meagher & Flom LLP,  special  counsel  for the
         Purchasers, dated the Closing Date, covering the matters referred to in
         subparagraphs  (ii),  (iii),  (iv),  (v),  (vii)  (but  only  as to the
         statements  in  the   "Description  of  the  Senior  Notes,"  "Plan  of
         Distribution" and "Transfer  Restrictions")  and (ix), and subparagraph
         (x) of paragraph (d) above.

         With respect to the final subparagraph of paragraph (d) above, Brobeck,
Phleger & Harrison LLP and Skadden,  Arps,  Slate,  Meagher & Flom LLP may state
that their belief is based upon their  participation  in the  preparation of the
Offering  Document  and any  amendments  or  supplements  thereto and review and
discussion  of the  contents  thereof,  but are  without  independent  check  or
verification except as specified.  With respect to matters of fact, such counsel
may  rely  on  certificates  of  officers  of the  Company  and of  governmental
officials,  in which case  their  opinion is to state that they are so doing and
that the  Purchasers  are justified in relying on such opinions or  certificates
and copies of said opinions or certificates are to be attached to the opinion.

         The opinion of Brobeck,  Phleger & Harrison LLP  described in paragraph
(d) above  shall be  rendered  to you at the request of the Company and shall so
state therein.

         The Company will furnish the Purchasers and their special  counsel with
such conformed copies of such opinions,  certificates,  letters and documents as
the Purchasers and their special  counsel  reasonably  request.  CSFB may in its
sole discretion waive on behalf of the Purchasers compliance with any conditions
to the obligations of the Purchasers hereunder.

         7.   Indemnification and Contribution.   

         (a) The Company will indemnify and hold harmless each Purchaser against
any losses,  claims,  damages or  liabilities,  joint or several,  to which such
Purchaser may become  subject,  under the  Securities Act or the Exchange Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect  thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in the Offering Document, or any
amendment or supplement thereto, or any related preliminary offering circular or
arise out of or are based upon the omission or alleged omission to state therein
a material fact required to be stated  therein or necessary in order to make the
statements  therein,  in light of the circumstances  under which they were made,
not  misleading,  and  will  reimburse  each  Purchaser  for any  legal or other
expenses  reasonably incurred by such Purchaser in connection with investigating
or defending any such loss, claim, damage,  liability or action as such expenses
are incurred; provided, however, that the Company will not be liable in any such
case to the extent that any such loss, claim,  damage or liability 

12


arises out of or is based upon an untrue  statement or alleged untrue  statement
in or omission or alleged  omission from any of such  documents in reliance upon
and in  conformity  with  written  information  furnished  to the Company by any
Purchaser  through CSFB  specifically  for use therein,  it being understood and
agreed that the only such information  consists of the information  described as
such in paragraph (b) below. The indemnity  agreement  contained in this Section
7(a) with  respect to any  untrue  statements  or  omission  in any  preliminary
offering  circular shall not inure to the benefit of any Purchaser if the person
asserting such losses,  liabilities,  claims, damages, or expenses purchased the
Offered  Securities  which is the subject  thereof if at or prior to the written
confirmation of the initial resale of the Offered Securities a copy of the final
offering  circular (or the final offering  circular as amended or  supplemented)
was not sent or delivered to such person and the final offering circular (or the
final offering circular as amended or supplemented)  would have cured the defect
giving rise to such losses, claims, damages or liabilities.

              (b) Each Purchaser  will  severally and not jointly  indemnify and
hold harmless the Company, its directors,  its officers and each person, if any,
who  controls  the  Company  within  the  meaning  of either  Section  15 of the
Securities  Act or Section 20 of the Exchange Act,  against any losses,  claims,
damages  or  liabilities  to which the  Company  may become  subject,  under the
Securities Act or the Exchange Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon any untrue  statement or alleged  untrue  statement  of any  material  fact
contained in the Offering Document,  or any amendment or supplement  thereto, or
any related preliminary offering circular, or arise out of or are based upon the
omission or the alleged omission to state therein a material fact required to be
stated  therein or necessary  in order to make the  statements  therein,  in the
light of the circumstances  under which they were made, not misleading,  in each
case to the  extent,  but only to the  extent,  that such  untrue  statement  or
alleged  untrue  statement or omission or alleged  omission was made in reliance
upon and in conformity with written information furnished to the Company by such
Purchaser  through CSFB  specifically  for use therein,  and will  reimburse any
legal or other expenses  reasonably  incurred by the Company in connection  with
investigating or defending any such loss, claim, damage,  liability or action as
such expenses are incurred,  it being  understood  and agreed that the only such
information  furnished by any Purchaser consists of the following information in
the  Offering  Document  furnished  on  behalf of each  Purchaser:  (i) the last
paragraph at the bottom of the cover page  concerning  the terms of the offering
by the Purchasers,  (ii) the legend on page 3 concerning the  stabilization  and
overallotment  by the  Purchasers,  (iii) the third  sentence  contained  in the
second paragraph under the caption "Plan of Distribution" concerning the role of
the Purchasers in the offering,  (iv) the second sentence of the third paragraph
under  the  caption  "Plan of  Distribution"  concerning  sales  of the  Offered
Securities,  (v) the fourth  paragraph under the caption "Plan of  Distribution"
concerning  sales of the Offered  Securities  to persons in the United  Kingdom,
(vi) the second  sentence  of the sixth  paragraph  under the  caption  "Plan of
Distribution" concerning the intention of the Purchasers to make a market in the
Offered Securities,  (vii) the first sentence of the seventh paragraph under the
caption "Plan of Distribution" concerning transactions engaged in by the Company
and the  Purchasers  and their  affiliates,  (viii)  the third  sentence  of the
seventh  paragraph  under the  caption  "Plan of  Distribution"  concerning  the
affiliation of the Bank of Novia Scotia with one of the Purchasers, and (ix) the
first sentence of the eighth  paragraph under the caption "Plan of Distribution"
concerning overallotments and stabilizing.


              (c)  Promptly  after  receipt by an  indemnified  party under this
paragraph of notice of the commencement of any action,  such  indemnified  party
will, if a claim in respect thereof is to be made against the indemnifying party
under  paragraph  (a)  or  (b)  above,  notify  the  indemnifying  party  of the
commencement  thereof; but the omission so to notify the indemnifying party will
not relieve it from any  liability  which it may have to any  indemnified  party
otherwise  than under  paragraph  (a) or (b) above.  In case any such  action is
brought against any indemnified party and it notifies the indemnify ing party of
the commencement thereof, the indemnifying party will be entitled to participate
therein 


13


and, to the extent that it may wish,  jointly with any other  indemnifying party
similarly notified,  to assume the defense thereof, with counsel satisfactory to
such  indemnified  party  (who  shall  not,  except  with  the  consent  of  the
indemnified party, be counsel to the indemnifying  party), and after notice from
the indemnifying  party to such  indemnified  party of its election so to assume
the  defense  thereof,  the  indemnifying  party  will  not be  liable  to  such
indemnified  party  under  this  paragraph  for  any  legal  or  other  expenses
subsequently  incurred by such indemnified  party in connection with the defense
thereof other than reasonable  costs of  investigation.  No  indemnifying  party
shall,  without the prior written consent of the indemnified  party,  effect any
settlement  of any  pending  or  threatened  action  in  respect  of  which  any
indemnified  party is or could have been a party and  indemnity  could have been
sought  hereunder by such indemnified  party unless such settlement  includes an
uncondition  al release of such  indemnified  party  from all  liability  on any
claims that are the subject matter of such action.

              (d) If the  indemnification  provided  for in  this  paragraph  is
unavailable  or  insufficient  to  hold  harmless  an  indemnified  party  under
paragraph (a) or (b) above, then each indemnifying party shall contribute to the
amount  paid or payable  by such  indemnified  party as a result of the  losses,
claims,  damages or liabilities referred to in paragraph (a) or (b) above (i) in
such proportion as is appropriate to reflect the relative  benefits  received by
the Company on the one hand and the Purchasers on the other from the offering of
the Offered Securities or (ii) if the allocation provided by clause (i) above is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the  relative  benefits  referred  to in clause  (i) above but also the
relative fault of the Company on the one hand and the Purchasers on the other in
connection  with the  statements  or  omissions  which  resulted in such losses,
claims,  damages or liabilities as well as any other relevant equitable consider
ations.  The relative  benefits  received by the Company on the one hand and the
Purchasers  on the other  shall be deemed  to be in the same  proportion  as the
total net proceeds from the offering (before deducting expenses) received by the
Company bear to the total discounts and  commissions  received by the Purchasers
from the Company under this Agreement. The relative fault 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  Company  or the  Purchasers  and the
parties'  relative intent,  knowledge,  access to information and opportunity to
correct or prevent  such untrue  statement  or  omission.  The amount paid by an
indemnified  party as a result of the  losses,  claims,  damages or  liabilities
referred  to in the  first  sentence  of this  paragraph  (d) shall be deemed to
include any legal or other  expenses  reasonably  incurred  by such  indemnified
party in connection with investigating or defending any action or claim which is
the  subject of this  paragraph  (d).  Notwithstanding  the  provisions  of this
paragraph (d) no Purchaser  shall be required to contribute any amount in excess
of the amount by which the total price at which the Offered Securities purchased
by it were resold  exceeds the amount of any damages  which such  Purchaser  has
otherwise  been  required  to pay by reason of such  untrue  or  alleged  untrue
statement or omission or alleged omission.  The Purchasers'  obligations in this
paragraph  (d) to  contribute  are  several in  proportion  to their  respective
purchase obligations and not joint.

              (e) The  obligations of the Company under this paragraph  shall be
in addition to any  liability  which the  Company may  otherwise  have and shall
extend,  upon the same  terms and  condi  tions,  to each  person,  if any,  who
controls any Purchaser  within the meaning of the Securities Act or the Exchange
Act; and the  obligations  of the Purchasers  under this  paragraph  shall be in
addition to any liability which the respective Purchasers may otherwise have and
shall extend,  upon the same terms and conditions,  to each person,  if any, who
controls the Company  within the meaning of the  Securities  Act or the Exchange
Act.

         8. Default of  Purchasers.  If any Purchaser or  Purchasers  default in
their  obligations to purchase  Offered  Securities  hereunder and the aggregate
principal  amount of the Offered  Securities that such  defaulting  Purchaser or
Purchasers  agreed  but  failed to  purchase  does not  exceed  10% of the total
principal  amount  of  the  Offered  Securities,   CSFB  may  make  arrangements
satisfactory to the Company 

                                       14



for the purchase of such Offered  Securities by other persons,  including any of
the Purchas ers, but if no such  arrangements  are made by the Closing Date, the
non-defaulting  Purchasers shall be obligated severally,  in proportion to their
respective commitments  hereunder,  to purchase the Offered Securities that such
defaulting Purchasers agreed but failed to purchase on such Closing Date. If any
Purchaser or  Purchasers so default and the  aggregate  principal  amount of the
Offered  Securities with respect to which such default or defaults occur exceeds
10% of the total  principal  amount of the Offered  Securities and  arrangements
satisfactory to CSFB and the Company for the purchase of such Offered Securities
by other persons are not made within 36 hours after such default, this Agreement
will terminate without liability on the part of any non-defaulting  Purchaser or
the Company,  except as provided in paragraph 9. As used in this Agreement,  the
term  "Purchaser"  includes any person  substituted  for a Purchaser  under this
Section.  Nothing herein will relieve a defaulting  Purchaser from liability for
its default.

         9. Survival of Certain Representations and Obligations.  The respective
indemnities,  agree ments,  representations,  warranties and other statements of
the Company or its officers and of the several  Purchasers  set forth in or made
pursuant to this Agreement  will remain in full force and effect,  regardless of
any investigation,  or statement as to the results thereof, made by or on behalf
of any  Purchaser,  the  Company  or any of  their  respective  representatives,
officers or directors or any controlling  person,  and will survive  delivery of
and payment for the Offered Securities. If this Agreement is terminated pursuant
to  paragraph 8 or if for any reason the purchase of the Offered  Securities  by
the Purchasers is not consummated,  the Company shall remain responsible for the
expenses  to be  paid  or  reimbursed  by it  pursuant  to  paragraph  5 and the
respective obligations of the Company and the Purchasers pursuant to paragraph 7
shall  remain in  effect.  If the  purchase  of the  Offered  Securities  by the
Purchasers is not  consummated  for any reason other than solely  because of the
termination of this  Agreement  pursuant to paragraph 8 or the occurrence of any
event specified in clause (iii), (iv) or (v) of paragraph 6(b), the Company will
reimburse the  Purchasers for all  out-of-pocket  expenses  (including  fees and
disbursements  of counsel)  reasonably  incurred by them in connection  with the
offering of the Offered Securities.

         10. Notices.  All  communications  hereunder will be in writing and, if
sent to the Purchasers will be mailed, delivered or telegraphed and confirmed to
the Purchasers c/o Credit Suisse First Boston  Corporation,  11 Madison  Avenue,
New York, N.Y. 10010,  Attention:  Investment  Banking  Department  Transactions
Advisory  Group,  or,  if sent to the  Company,  will be  mailed,  delivered  or
telegraphed  and  confirmed  to it at Calpine  Corporation  50 West San Fernando
Street,  San Jose,  California 95113 Attention:  Joseph E. Ronan, Jr.; provided,
however,  that any notice to a Purchaser pursuant to paragraph 7 will be mailed,
delivered or telegraphed and confirmed to such Purchaser.

         11.  Successors.  This  Agreement  will inure to the  benefit of and be
binding  upon  the  parties  hereto  and  their  respective  successors  and the
controlling  persons  referred to in  paragraph 7, and no other person will have
any right or  obligation  hereunder,  except that holders of Offered  Securities
shall be entitled to enforce the agreements  for their benefit  contained in the
second and third  sentences of paragraph  5(c) hereof  against the Company as if
such holders were parties hereto.

         12.  Representation  of  Purchasers.  CSFB  will  act for  the  several
Purchasers in connection with this purchase, and any action under this Agreement
taken by CSFB will be binding upon all the Purchasers.

         13.  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  each of which  shall be  deemed to be an  original,  but all such
counterparts shall together constitute one and the same Agreement.


                                       15



         14.  Applicable 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.

                                       16





         If the foregoing is in accordance with the Purchasers' understanding of
our  agreement,  kindly sign and return to the  Company one of the  counterparts
hereof, whereupon it will become a binding agreement between the Company and the
several Purchasers in accordance with its terms.

                                            Very truly yours,

                                            CALPINE CORPORATION


                                            By:
                                                 Name:
                                                 Title:




The foregoing Purchase Agreement is hereby confirmed and accepted as of the date
first above written.

         By:  CREDIT SUISSE FIRST BOSTON CORPORATION

         Acting on behalf of themselves and as
            the Representative of the
            several Purchasers.



         By:
              Name:
              Title:

                                       17





                                   SCHEDULE A







                                                                     Principal
                                                                     Amount of
                                                                     Securities
Purchaser
Credit Suisse First Boston Corporation.................   $         100,000,000
Morgan Stanley & Co. Incorporated .....................   $          30,000,000
Salomon Brothers Inc...................................   $          30,000,000
Scotia Capital Markets (USA) Inc.......................   $          20,000,000
BancAmerica Securities, Inc............................   $          10,000,000
CIBC Wood Gundy Securities Corp........................   $          10,000,000
                                                        -----------------------




                                    Total..............   $         200,000,000
                                                        =======================


                                        18




                                   SCHEDULE B



                        List of Documents Delivered with
                                Offering Circular


                                      None

                                        19