<PAGE>   1

    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 14, 2001
                                                   REGISTRATION NO. 333-[      ]
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------

                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------

                              CALPINE CORPORATION
                       CALPINE CANADA ENERGY FINANCE ULC
                      CALPINE CANADA ENERGY FINANCE II ULC
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<Table>
<S>                                    <C>                                    <C>
               DELAWARE                                 4911                                77-0212977
             NOVA SCOTIA                                4911                              NOT APPLICABLE
             NOVA SCOTIA                                4911                              NOT APPLICABLE
    (STATES OR OTHER JURISDICTIONS          (PRIMARY STANDARD INDUSTRIAL                 (I.R.S. EMPLOYER
  OF INCORPORATION OR ORGANIZATION)         CLASSIFICATION CODE NUMBERS)             IDENTIFICATION NUMBERS)
</Table>

<Table>
<S>                                                      <C>
                                                                    CALPINE CANADA ENERGY FINANCE ULC
                                                                   CALPINE CANADA ENERGY FINANCE II ULC
                                                                    SUITE 800, PURDY'S WHARF, TOWER 1
                  CALPINE CORPORATION                                    1959 UPPER WATER STREET
              50 WEST SAN FERNANDO STREET                                      P.O. BOX 997
               SAN JOSE, CALIFORNIA 95113                              HALIFAX, NOVA SCOTIA B3J 3N2
                     (408) 995-5115                                           (902) 420-3335
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,      (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                       INCLUDING                                                INCLUDING
AREA CODE, OF REGISTRANTS' PRINCIPAL EXECUTIVE OFFICES)  AREA CODE, OF REGISTRANTS' PRINCIPAL EXECUTIVE OFFICES)

                                                                              ANN B. CURTIS
                                                                  EXECUTIVE VICE PRESIDENT AND SECRETARY
                    PETER CARTWRIGHT                                CALPINE CANADA ENERGY FINANCE ULC
    CHAIRMAN, PRESIDENT AND CHIEF EXECUTIVE OFFICER,               CALPINE CANADA ENERGY FINANCE II ULC
                  CALPINE CORPORATION                                    C/O CALPINE CORPORATION
              50 WEST SAN FERNANDO STREET                              50 WEST SAN FERNANDO STREET
               SAN JOSE, CALIFORNIA 95113                               SAN JOSE, CALIFORNIA 95113
                     (408) 995-5115                                           (408) 995-5115
   (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE        (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
                        NUMBER,                                                  NUMBER,
       INCLUDING AREA CODE, OF AGENT FOR SERVICE)               INCLUDING AREA CODE, OF AGENT FOR SERVICE)
</Table>

                                WITH COPIES TO:

<Table>
<S>                                                      <C>
                    BRUCE C. BENNETT                                          JOSEPH A. COCO
                  COVINGTON & BURLING                            SKADDEN, ARPS, SLATE, MEAGHER & FLOM LLP
              1330 AVENUE OF THE AMERICAS                                   FOUR TIMES SQUARE
                NEW YORK, NEW YORK 10019                                 NEW YORK, NEW YORK 10036
                     (212) 841-1000                                           (212) 735-3000
</Table>

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
  From time to time after the effective date of this Registration Statement as
                        determined by market conditions.

    If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box:  [ ]

    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box:  [X]

    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering:  [ ]  __________

    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering:  [ ]  __________

    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box:  [ ]
                            ------------------------

    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME EFFECTIVE
ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A), MAY
DETERMINE.

    PURSUANT TO RULE 429 UNDER THE SECURITIES ACT, THE PROSPECTUS IN THIS
REGISTRATION STATEMENT ALSO RELATES TO $275,000,000 OF UNSOLD COMMON STOCK,
PREFERRED STOCK AND DEBT SECURITIES OF CALPINE CORPORATION REGISTERED ON
REGISTRATION STATEMENT NO. 333-40652 PREVIOUSLY FILED BY CALPINE CORPORATION ON
FORM S-3 AND DECLARED EFFECTIVE ON AUGUST 3, 2001, AND $1,000,000,000 OF UNSOLD
COMMON STOCK, PREFERRED STOCK AND DEBT SECURITIES OF CALPINE CORPORATION AND
DEBT SECURITIES OF CALPINE CANADA ENERGY FINANCE ULC GUARANTEED BY CALPINE
CORPORATION REGISTERED ON REGISTRATION STATEMENT NO. 333-57338, PREVIOUSLY FILED
BY CALPINE CORPORATION AND CALPINE CANADA ENERGY FINANCE ULC ON FORM S-3 AND
DECLARED EFFECTIVE ON APRIL 19, 2001. PURSUANT TO RULE 457 UNDER THE SECURITIES
ACT, NO ADDITIONAL FILING FEE IS DUE ON SUCH SECURITIES IN CONNECTION WITH THIS
REGISTRATION STATEMENT. THIS REGISTRATION STATEMENT CONSTITUTES A POST-EFFECTIVE
AMENDMENT TO EACH OF REGISTRATION STATEMENTS NOS. 333-40652 AND 333-57338 AND
SUCH POST-EFFECTIVE AMENDMENTS SHALL BECOME EFFECTIVE CONCURRENTLY WITH THE
EFFECTIVENESS OF THIS REGISTRATION STATEMENT AND IN ACCORDANCE WITH SECTION 8(C)
OF THE SECURITIES ACT.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>   2

                        CALCULATION OF REGISTRATION FEE

<Table>
<S>                              <C>                    <C>                    <C>                    <C>
-------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------
    TITLE OF EACH CLASS OF                                 PROPOSED MAXIMUM       PROPOSED MAXIMUM
          SECURITIES                  AMOUNT TO BE        OFFERING PRICE PER     AGGREGATE OFFERING        AMOUNT OF
       TO BE REGISTERED           REGISTERED(1)(2)(3)       UNIT(1)(2)(3)          PRICE(1)(2)(3)      REGISTRATION FEE
-------------------------------------------------------------------------------------------------------------------------
Common Stock, par value $.001
  per share, of Calpine
  Corporation(4)...............
-------------------------------------------------------------------------------------------------------------------------
Preferred Stock, par value
  $.001 per share, of Calpine
  Corporation(5)...............
-------------------------------------------------------------------------------------------------------------------------
Debt Securities of Calpine
  Corporation(5)...............
-------------------------------------------------------------------------------------------------------------------------
Debt Securities of Calpine
  Canada Energy Finance ULC....
-------------------------------------------------------------------------------------------------------------------------
Debt Securities of Calpine
  Canada Energy Finance II
  ULC..........................
-------------------------------------------------------------------------------------------------------------------------
Guarantees of Calpine
  Corporation(6)...............
-------------------------------------------------------------------------------------------------------------------------
          Total................      $1,500,000,000              100%              $1,500,000,000          $375,000
-------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------
</Table>

(1) Includes such indeterminate number of shares of our common stock and
    preferred stock and principal amount of our debt securities as may be
    periodically issued at indeterminate prices or, if any debt securities are
    issued with original issue discount, such greater principal amount as shall
    be equal to the principal amount at maturity thereof.

(2) In United States dollars or the equivalent thereof in any other currency,
    currency unit or units, or composite currency or currencies.

(3) Estimated solely for the purposes of calculating the registration fee
    pursuant to Rule 457. The aggregate public offering price of our common
    stock, preferred stock and debt securities registered hereunder (or, in the
    case of debt securities issued with original issue discount, the principal
    amount at maturity thereof) will not exceed $1,500,000,000.

(4) Includes certain preferred stock purchase rights (the "Rights") associated
    with shares of the common stock of Calpine Corporation. Until the occurrence
    of certain prescribed events, none of which have occurred, the Rights are
    not exercisable, are evidenced by the certificate representing the common
    stock and will be transferred along with and only with the common stock.

(5) To the extent convertible preferred stock and/or convertible debt securities
    are issued hereunder, shares of common stock issuable upon conversion
    thereof will be issued without the payment of additional consideration.
    Pursuant to Rule 457(i) under the Securities Act, no registration fee is
    attributable to the common stock which may be issued upon conversion of such
    preferred stock or debt securities.

(6) The debt securities to be issued by Calpine Canada Energy Finance ULC and
    Calpine Canada Energy Finance II ULC will be irrevocably and unconditionally
    guaranteed on an unsecured senior basis by Calpine Corporation. No separate
    consideration will be received for the guarantees of Calpine Corporation
    and, therefore, no additional registration fee is payable in respect of the
    registration of such guarantees.
<PAGE>   3

INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

                  SUBJECT TO COMPLETION, DATED AUGUST 14, 2001

PROSPECTUS

<Table>
<S>                             <C>                                          <C>

                                            CALPINE CORPORATION
                                                Common Stock
                                              Preferred Stock
[CALPINE CORP. LOGO]                          Debt Securities
</Table>

                       CALPINE CANADA ENERGY FINANCE ULC

                   Debt Securities Fully and Unconditionally
                       Guaranteed by Calpine Corporation

                      CALPINE CANADA ENERGY FINANCE II ULC

                   Debt Securities Fully and Unconditionally
                       Guaranteed by Calpine Corporation

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

     Calpine Corporation may periodically sell common stock, preferred stock and
debt securities to the public. We will provide specific terms of such securities
in supplements to this prospectus.

     Calpine Canada Energy Finance ULC and Calpine Canada Energy Finance II ULC
may each periodically sell debt securities to the public. Such debt securities
will be fully and unconditionally guaranteed by Calpine Corporation. Calpine
Canada Energy Finance ULC or Calpine Canada Energy Finance II ULC, as the case
may be, will provide specific terms of such debt securities in supplements to
this prospectus.

     You should read this prospectus and each applicable supplement carefully
before you invest.

     INVESTING IN THESE SECURITIES INVOLVES CERTAIN RISKS. SEE "RISK FACTORS" ON
PAGE 11.

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

     This prospectus may not be used to sell these securities unless it is
accompanied by a prospectus supplement.

                      Prospectus dated             , 2001.
<PAGE>   4

     No person is authorized to give any information or to make any
representations other than those contained or incorporated by reference in this
prospectus or the accompanying prospectus supplement and, if given or made, such
information or representations must not be relied upon as having been
authorized. This prospectus and accompanying prospectus supplement do not
constitute an offer to sell or the solicitation of an offer to buy any
securities other than the securities described in this prospectus and the
accompanying prospectus supplement or an offer to sell or the solicitation of an
offer to buy such securities in any circumstance in which such offer or
solicitation is unlawful. Neither the delivery of this prospectus or the
accompanying prospectus supplement, nor any sale made under this prospectus or
accompanying prospectus supplement shall, under any circumstances, create any
implication that there has been no change in our affairs since the date of the
prospectus supplement accompanying this prospectus or that the information
contained or incorporated by reference in this prospectus or accompanying
prospectus supplement is correct as of any time subsequent to the date of such
information.

                               TABLE OF CONTENTS

<Table>
<Caption>
                                        PAGE
                                        ----
<S>                                     <C>
About This Prospectus.................    1
Calpine Corporation...................    2
Calpine Canada Energy Finance ULC.....    9
Calpine Canada Energy Finance II
  ULC.................................   10
Risk Factors..........................   11
Where You Can Find More Information;
  Documents Incorporated by
  Reference...........................   11
Forward-Looking Statements............   13
Calpine Consolidated Ratio of Earnings
  to Fixed Charges....................   14
</Table>

<Table>
<Caption>
                                        PAGE
                                        ----
<S>                                     <C>
Use of Proceeds.......................   14
Plan of Distribution..................   14
Description of Capital Stock..........   16
Description of the Debt Securities....   21
Certain United States Federal Income
  Tax Consequences....................   36
Certain Canadian Federal Income Tax
  Considerations......................   50
Legal Matters.........................   50
Experts...............................   50
</Table>

                                        i
<PAGE>   5

                             ABOUT THIS PROSPECTUS

     This document is called a prospectus and is part of a joint registration
statement that Calpine Corporation, Calpine Canada Energy Finance ULC and
Calpine Canada Energy Finance II ULC, which we refer to as "Energy Finance" and
"Energy Finance II," respectively, filed with the SEC using a "shelf"
registration or continuous offering process. Under this shelf process, Calpine
may from time to time sell any combination of its common stock, preferred stock
and debt securities described in this prospectus, and Energy Finance and Energy
Finance II may from time to time sell their respective debt securities fully and
unconditionally guaranteed by Calpine described in this prospectus, in one or
more offerings which will aggregate up to a total dollar amount of
$2,775,000,000, which amount includes over-allotment options with regard to
certain securities.

     Pursuant to Rule 3-10 of Regulation S-X promulgated by the SEC, we are not
required to include separate financial statements of Energy Finance or Energy
Finance II in this prospectus, because:

     - all of the voting rights of each of Energy Finance and Energy Finance II
       are owned by Calpine, either directly or through wholly-owned
       subsidiaries of Calpine, which files periodic and other reports with the
       SEC pursuant to the Securities Exchange Act of 1934;

     - Neither Energy Finance nor Energy Finance II has operations other than
       the investment of funds in Calpine or its subsidiaries; and

     - Calpine will fully and unconditionally guarantee the obligations of
       Energy Finance and Energy Finance II, and the rights of holders of their
       debt securities, and no subsidiary of Calpine will guarantee the
       obligations of Energy Finance or Energy Finance II.

     This prospectus provides you with a general description of the common
stock, preferred stock and debt securities we may offer. Each time we sell such
securities, whether by Calpine, Energy Finance or Energy Finance II, we will
provide a prospectus supplement containing specific information about the terms
of the securities being offered, including any guarantees. That prospectus
supplement may include a discussion of any risk factors or other special
considerations applicable to those securities. The prospectus supplement may
also add, update or change information in this prospectus. If there is any
inconsistency between the information in this prospectus and any prospectus
supplement, you should rely on the information in that prospectus supplement.
You should read both this prospectus and any prospectus supplement together with
the additional information described under the heading "Where You Can Find More
Information; Documents Incorporated by Reference."

     The registration statement containing this prospectus, including the
exhibits to the registration statement, provides additional information about us
and the securities offered under this prospectus. The registration statement,
including the exhibits, can be read at the SEC website or at the SEC offices
mentioned under the heading "Where You Can Find More Information; Documents
Incorporated by Reference."

     You should rely only on the information incorporated by reference or
provided in this prospectus and the accompanying prospectus supplement. We have
not authorized anyone to provide you with different information. We are not
making an offer or soliciting a purchase of these securities in any jurisdiction
in which the offer or solicitation is not authorized or in which the person
making the offer or solicitation is not qualified to do so or to anyone to whom
it is unlawful to make the offer or solicitation. You should not assume that the
information in this prospectus or the accompanying prospectus supplement is
accurate as of any date other than the date on the front of the document.

     The prospectus incorporates business and financial information about us
that is not included or delivered with this document. YOU MAY REQUEST AND OBTAIN
THIS INFORMATION FREE OF CHARGE BY WRITING OR TELEPHONING US AT THE FOLLOWING
ADDRESS: CALPINE CORPORATION, 50 WEST SAN FERNANDO STREET, SAN JOSE, CALIFORNIA
95113, ATTENTION: LISA M. BODENSTEINER, ASSISTANT SECRETARY, TELEPHONE (408)
995-5115.

     Unless we have indicated otherwise, in this prospectus references to
"Calpine" are to Calpine Corporation, references to "Energy Finance" are to
Calpine Canada Energy Finance ULC, references to "Energy Finance II" are to
Calpine Canada Energy Finance II ULC and references to "we," "us" and "our" or
similar terms are, collectively, to Calpine Corporation and its consolidated
subsidiaries excluding Calpine Capital Trust III, Calpine Capital Trust II and
Calpine Capital Trust.

                                        1
<PAGE>   6

                              CALPINE CORPORATION

     We are a leading independent power company engaged in the development,
acquisition, ownership and operation of power generation facilities and the sale
of electricity and steam in the United States and Canada. We have experienced
significant growth in all aspects of our business over the last five years.
Currently, we own interests in 58 power plants having a net capacity of 9,626
megawatts. We also have 27 gas-fired projects under construction having a net
capacity of 14,932 megawatts and have announced plans to develop 29 gas-fired
projects (power plants and expansions of current facilities) with a net capacity
of 16,618 megawatts. Upon completion of the projects under construction, we will
have interests in 81 power plants located in 22 states and Canada, having a net
capacity of 24,558 megawatts. Of this total generating capacity, 97% will be
attributable to gas-fired facilities and 3% will be attributable to geothermal
facilities. As a result of our expansion program, our revenues, cash flow,
earnings and assets have grown significantly over the last five years, as shown
in the table below. Except as otherwise noted herein, financial information in
this prospectus does not reflect any impact on our financial position or results
of operations that will result from our business combination under the
pooling-of-interests method of accounting consummated on April 19, 2001, with
Encal Energy Ltd.

<Table>
<Caption>
                                                                         COMPOUND ANNUAL
                                                   1996        2000        GROWTH RATE
                                                 --------    --------    ---------------
                                                    (IN MILLIONS)
<S>                                              <C>         <C>         <C>
Total Revenue..................................  $  214.6    $2,282.8           81%
EBITDA.........................................     110.7       825.9           65%
Net Income.....................................      18.7       323.5          104%
Total Assets...................................   1,031.4     9,737.3           75%
</Table>

     Since our inception in 1984, we have developed substantial expertise in all
aspects of the development, acquisition and operation of power generation
facilities. We believe that the vertical integration of our extensive
engineering, construction management, operations, fuel management, power
marketing and financing capabilities provides us with a competitive advantage to
successfully implement our acquisition and development program and has
contributed to our significant growth over the past five years.

     We are a corporation organized and existing under the laws of the State of
Delaware. Our principal executive office is located at 50 West San Fernando
Street, San Jose, California 95113. Our registered office is located at 9 East
Loockerman Street, Dover, Delaware 19901, c/o National Registered Agents, Inc.

                                        2
<PAGE>   7

CAPITALIZATION

     The following table sets forth, as of March 31, 2001 (1) Calpine's actual
consolidated capitalization; and (2) Calpine's consolidated capitalization as
adjusted to reflect the net effect of (a) the amendment on July 26, 2001 of
Calpine's Amended and Restated Certificate of Incorporation to increase from
500,000,000 to 1,000,000,000 the number of shares of common stock that Calpine
has the authority to issue, (b) our acquisition of WRMS Engineering, Inc. on
April 3, 2001, including the issuance of shares of Calpine common stock in
connection therewith, (c) Calpine's business combination with Encal, including
the issuance of shares of Calpine's common stock upon exchange of the
exchangeable securities offered thereby, (d) the sale of $1.5 billion in
aggregate principal amount of Energy Finance's 8 1/2% Senior Notes Due 2008
guaranteed by Calpine and the use of the proceeds thereof, (e) the sale of $1.0
billion in aggregate principal amount of Calpine's Zero-Coupon Convertible
Debentures Due 2021 and the use of the proceeds thereof, (f) the redemption of
$105 million in aggregate principal amount of Calpine 9 1/4% Senior Notes Due
2004 and (g) the second quarter 2001 borrowings under the Calpine Construction
Finance Company debt revolvers. The adjustments do not reflect normal day-to-day
operations or the potential issuance of securities offered hereby. This table
should be read in conjunction with the consolidated financial statements and
related notes thereto and the unaudited pro forma combined condensed financial
statements and related notes thereto incorporated by reference in this
prospectus.

<Table>
<Caption>
                                                                  MARCH 31, 2001
                                                             -------------------------
                                                               ACTUAL      AS ADJUSTED
                                                             ----------    -----------
                                                                    (UNAUDITED)
                                                               (IN THOUSANDS, EXCEPT
                                                                  SHARE AMOUNTS)
<S>                                                          <C>           <C>
SHORT-TERM DEBT:
Notes payable and borrowings under lines of credit, current
  portion..................................................  $      851    $       851
Project financing, current portion.........................      91,571          1,177
Capital lease obligation, current portion..................       2,050          2,050
Zero-Coupon Convertible Debentures Due 2021................          --      1,000,000
                                                             ----------    -----------
                                                                 94,472      1,004,078
LONG-TERM DEBT:
Notes payable and borrowings under lines of credit, net of
  current portion..........................................     133,955          7,713
Project financing, net of current portion..................   1,646,564      1,712,059
Senior notes...............................................   3,701,750      5,096,750
Capital lease obligation, net of current portion...........     208,840        209,065
                                                             ----------    -----------
     Total long-term debt..................................   5,691,109      7,025,587
                                                             ----------    -----------
Company-obligated mandatorily redeemable convertible
  preferred securities of subsidiary trusts................   1,122,686      1,122,686
Minority interests.........................................      41,180         41,180
                                                             ----------    -----------
STOCKHOLDERS' EQUITY:
Preferred stock, $.001 par value:
  10,000,000 shares authorized; no shares outstanding,
     actual, and one share outstanding, as adjusted........          --             --
                                                             ----------    -----------
Common stock, $.001 par value:
  500,000,000 shares authorized, actual, and 1,000,000,000
     shares authorized, as adjusted; 285,113,768 shares
     outstanding, actual, and 301,868,577 shares
     outstanding, as adjusted..............................         285            302
Additional paid-in capital.................................   1,734,202      1,942,642
Retained earnings..........................................     631,394        632,302
Accumulated other comprehensive loss.......................     (56,694)       (87,073)
                                                             ----------    -----------
     Total stockholders' equity............................   2,309,187      2,488,173
                                                             ----------    -----------
     Total capitalization..................................  $9,258,634    $11,681,704
                                                             ==========    ===========
</Table>

                                        3
<PAGE>   8

THE MARKET

     The power industry represents the third largest industry in the United
States, with an estimated end-user market of over $215 billion of electricity
sales in 2000 produced by an aggregate base of power generation facilities with
a capacity of approximately 860,000 megawatts. In response to increasing
customer demand for access to low-cost electricity and enhanced services, new
regulatory initiatives have been and are continuing to be adopted at both the
state and federal level to increase competition in the domestic power generation
industry. The power generation industry historically has been largely
characterized by electric utility monopolies producing electricity from old,
inefficient, high-cost generating facilities selling to a captive customer base.
Industry trends and regulatory initiatives have transformed the existing market
into a more competitive market where end-users purchase electricity from a
variety of suppliers, including non-utility generators, power marketers, public
utilities and others.

     There is a significant need for additional power generating capacity
throughout the United States, both to satisfy increasing demand, as well as to
replace old and inefficient generating facilities. Due to environmental and
economic considerations, we believe this new capacity will be provided
predominantly by gas-fired facilities. We believe that these market trends will
create substantial opportunities for efficient, low-cost power producers that
can produce and sell energy to customers at competitive rates.

     In addition, as a result of a variety of factors, including deregulation of
the power generation market, utilities, independent power producers and
industrial companies are disposing of power generation facilities. To date,
numerous utilities have sold or announced their intentions to sell their power
generation facilities and have focused their resources on the transmission and
distribution business segments. Many independent producers operating a limited
number of power plants are also seeking to dispose of their plants in response
to competitive pressures, and industrial companies are selling their power
plants to redeploy capital in their core businesses.

STRATEGY

     Our strategy is to continue our rapid growth by capitalizing on the
significant opportunities in the power market, primarily through our active
development and acquisition programs. In pursuing this growth strategy, we
utilize our management and technical knowledge to implement a fully integrated
approach to the acquisition, development and operation of power generation
facilities. This approach uses our expertise in design, engineering,
procurement, finance, construction management, fuel and resource production,
acquisition, operations and power marketing, which we believe provides us with a
competitive advantage. The key elements of our strategy are as follows:

     - Development of new and expansion of existing power plants. We are
       actively pursuing the development of new and expansion of our existing
       highly efficient, low-cost, gas-fired power plants to replace old and
       inefficient generating facilities and meet the demand for new generation.

     - Acquisition of power plants. Our strategy is to acquire power generating
       facilities that meet our stringent criteria, provide significant
       potential for revenue, cash flow and earnings growth and provide the
       opportunity to enhance the operating efficiencies of the plants.

     - Enhancement of existing power plants. We continually seek to maximize the
       power generation and revenue potential of our operating assets and
       minimize our operating and maintenance expenses and fuel costs.

RECENT DEVELOPMENTS

     In addition to the recent developments described below, please see the
recent developments described in our Annual Report on Form 10-K for the year
ended December 31, 2000, our Quarterly Report on Form 10-Q for the quarter ended
March 31, 2001, and our Current Reports on Form 8-K dated April 19, 2001, June
26, 2001, July 6, 2001, July 12, 2001 and July 26, 2001, each of which are
incorporated by reference in this prospectus.

                                        4
<PAGE>   9

     Second Quarter 2001 Earnings. On July 26, 2001, we announced earnings for
the quarter ended June 30, 2001. Net income from recurring operations (before
deduction of nonrecurring merger costs incurred in connection with the Encal
pooling of interests transaction) was $132.2 million for the quarter ended June
30, 2001, representing a 122% increase over 2000 second quarter net income of
$59.5 million. Diluted earnings per share from recurring operations (before
deduction of nonrecurring merger costs of $0.07 per share) for the second
quarter rose 95% to $0.39 per share, from $0.20 per share for the same period
last year. After nonrecurring merger costs of $0.07 per share in connection with
the Encal merger, second quarter profit was $107.7 million or $0.32 per share.
Revenue for the quarter increased 284% to $1.6 billion, from $417 million a year
ago. Total assets at June 30, 2001 were approximately $16.0 billion as compared
to $10.3 billion at December 31, 2000. As a result of the completion of the
Encal pooling-of-interests transaction, the financial results for the quarter
and six months ended June 30, 2000, and for the quarter ended March 31, 2001,
have been restated to include Encal. Earnings for the quarter and six months
ended June 30, 2001, benefited primarily from the continued execution of our
program to own and operate low-cost generating facilities in key power markets
throughout the United States and Calpine Energy Services' successful power
systems program.

     Acquisitions. On April 19, 2001, we closed the acquisition of all of the
common shares of Encal Energy Ltd. (which was thereafter merged with and into
Calpine Canada Resources Ltd.), a Calgary, Alberta-based natural gas and
petroleum exploration and development company, through a stock-for-stock
exchange in which Encal shareholders received, in exchange for each share of
Encal common stock, .1493 shares of Calpine common equivalent shares (called
"exchangeable shares") of our subsidiary, Calpine Canada Holdings Ltd. A total
of 16,603,633 exchangeable shares were issued to Encal shareholders in exchange
for their Encal common stock. Each exchangeable share is exchangeable for one
share of our common stock. The aggregate value of the transaction is
approximately U.S.$1.1 billion, including the assumed indebtedness of Encal. The
transaction was accounted for under the pooling-of-interests method. With the
addition of Encal's assets, which currently produce approximately 230 million
cubic feet of gas equivalent ("mmcfe") per day, net of royalties, our net
production increased to 390 mmcfe per day in North America, enough to fuel
approximately 2,300 megawatts of our power fleet.

     On May 15, 2001, we announced that our wholly-owned subsidiary, Canada
Power Holdings Ltd., had entered into a letter of intent to acquire from British
Columbia-based Westcoast Energy, Inc., a 100% interest in Westcoast's
250-megawatt facility located on Vancouver Island and a 50% interest in its
50-megawatt facility located in Ontario. The acquisition is expected to close in
the third quarter of this year and is subject to final documentation and third
party and regulatory approvals.

     On July 5, 2001, we announced an agreement to acquire a 1,200-megawatt
natural gas-fired power plant at Saltend near Hull, Yorkshire, England from
Entergy Wholesale Operations for up to approximately L562.5 million
(approximately U.S.$800 million at current exchange rates). The Saltend
facility, a cogeneration facility, provides electricity and steam for BP
Chemical's Hull Works plant under a 15-year agreement. The balance of the
Saltend facility's electricity output is sold into the deregulated UK power
market. The Saltend transaction will be our first acquisition of a power
facility in Europe. The acquisition is expected to close in the third quarter of
this year and is subject to third party approvals.

     On July 10, 2001, we announced an agreement to acquire approximately 85% of
the voting stock of Michael Petroleum Corporation, a Houston, Texas-based
natural gas exploration and development company, for approximately $338.5
million and the assumption of $44.1 million of debt. The acquisition includes
204 billion cubic feet equivalent of proven natural gas reserves currently
producing 43 mmcfe per day and an inventory of high quality, low risk drilling
locations within a 94,000 acreage position in close proximity to our South Texas
Magic Valley and Hidalgo Energy Centers. The acquisition is expected to close in
the third quarter of this year.

     Turbine Contract. On April 19, 2001, we announced the purchase of 35 model
7FB and 11 model 7FA gas-fired turbines from GE Power Systems. We expect to take
delivery of five turbines in 2002, with the remainder of the contract to be
filled by the end of 2005. With this purchase, we have firm orders in

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<PAGE>   10

place for the delivery of 203 turbines which, when operated in a combined-cycle
configuration, will produce approximately 50,000 megawatts of baseload capacity.

     Securities. On April 25, 2001, Energy Finance, our indirect wholly-owned
subsidiary, issued $1.5 billion in aggregate principal amount of its 8 1/2%
Senior Notes Due 2008. The Senior Notes Due 2008 are fully and unconditionally
guaranteed by us.

     On April 30, 2001, we completed the private placement in a Rule 144A
transaction of $1.0 billion aggregate principal amount of our Zero-Coupon
Convertible Debentures Due 2021. Each debenture is convertible into 13.2714
shares of our common stock (representing an initial conversion price of $75.35
per share of common stock). The debentures do not pay interest, except that
interest may become payable in certain circumstances if the trading price of the
debentures falls below a designated level.

     On June 7, 2001, we redeemed all $105 million in aggregate outstanding
principal amount of our 9 1/4% Senior Notes Due 2004 at a redemption price of
100% of the principal amount plus accrued interest to the redemption date.

     California Power Market. The deregulation of the California power market
has produced significant unanticipated results in the past year and a half. The
deregulation froze the rates that utilities can charge their retail and business
customers in California, until recent rate increases approved by the California
Public Utilities Commission ("CPUC"), and prohibited the utilities from buying
power on a forward basis, while wholesale power prices were not subjected to
limits.

     In the past year and a half, a series of factors have reduced the supply of
power to California, which has resulted in wholesale power prices that have been
significantly higher than historical levels. Several factors contributed to this
increase. These included:

     - significantly increased volatility in prices and supplies of natural gas;

     - an unusually dry fall and winter in the Pacific Northwest, which reduced
       the amount of available hydroelectric power from that region (typically,
       California imports a portion of its power from this source);

     - the large number of power generating facilities in California nearing the
       end of their useful lives, resulting in increased downtime (either for
       repairs or because they have exhausted their air pollution credits and
       replacement credits have become too costly to acquire on the secondary
       market); and

     - continued obstacles to new power plant construction in California, which
       deprived the market of new power sources that could have, in part,
       ameliorated the adverse effects of the foregoing factors.

     As a result of this situation, two major California utilities that are
subject to the retail rate freeze, including Pacific Gas & Electric Company
("PG&E"), have faced wholesale prices that far exceed the retail prices they are
permitted to charge. This has led to significant under-recovery of costs by
these utilities. As a consequence, these utilities have defaulted under a
variety of contractual obligations, including payment obligations to power
generators. PG&E has defaulted on payment obligations to Calpine under Calpine's
long-term qualifying facility ("QF") contracts, which are subject to federal
regulation under the Public Utility Regulatory Policies Act of 1978, as amended
("PURPA"). The PG&E QF contracts are in place at 11 of our facilities and
represent nearly 600 megawatts of electricity for Northern California customers.

     PG&E Bankruptcy Proceedings. On April 6, 2001, PG&E filed for bankruptcy
protection under Chapter 11 of the United States Bankruptcy Code. As of April 6,
2001, Calpine had recorded approximately $266 million in accounts receivable
with PG&E under its QF contracts, plus a $69 million note receivable not yet due
and payable. Calpine is currently selling power to PG&E pursuant to its long-
term QF contracts, and PG&E has been paying on a current basis for these
purchases since its bankruptcy filing. With respect to the receivables recorded
under these contracts on July 6, 2001, Calpine announced that it had entered
into a binding agreement with PG&E to modify all of Calpine's QF contracts with

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<PAGE>   11

PG&E and that, based upon such modification, PG&E had agreed to assume all of
the QF contracts. Under the terms of this agreement, Calpine will continue to
receive its contractual capacity payments under the QF contracts, plus a
five-year fixed energy component that averages 5.37 cents per kilowatt-hour. In
addition, all past due receivables under the QF contracts will be elevated to
administrative priority status in the PG&E bankruptcy proceeding and will be
paid to Calpine, with interest, upon the effective date of a confirmed plan of
reorganization. Administrative claims enjoy priority over payments made to the
general unsecured creditors in bankruptcy. The bankruptcy court approved the
agreement on July 12, 2001. Calpine cannot predict when the bankruptcy court
will confirm a plan of reorganization for PG&E.

     CPUC Proceedings Regarding QF Contract Pricing. Our QF contracts with PG&E
provide that the CPUC has the authority to determine the appropriate utility
"avoided cost" to be used to set energy payments for certain QF contracts,
including those for all of our QF plants in California which sell power to PG&E.
Section 390 of the California Public Utility Code provided QFs the option to
elect to receive energy payments based on the California Power Exchange ("PX")
market clearing price. In mid-2000, our QF facilities elected this option and
were paid based upon the PX zonal day ahead clearing price ("PX Price") from
summer 2000 until January 19, 2001, when the PX ceased operating a day ahead
market. Since that time, the CPUC has ordered that the price to be paid for
energy deliveries by QFs electing the PX Price shall be based on a natural gas
cost-based "transition formula." The CPUC has conducted proceedings (R.
99-11-022) to determine whether the PX Price was the appropriate price for the
energy component upon which to base payments to QFs which had elected the PX
based pricing option. The CPUC has issued a proposed decision to the effect that
the PX price was the appropriate price for energy payments under the California
Public Utility Code. However, a final decision has not been issued to date.
Therefore, it is possible that the CPUC could order a payment adjustment based
on a different energy price determination. We believe that the PX Price was the
appropriate price for energy payments but there can be no assurance that this
will be the outcome of the CPUC proceedings.

     On March 28, 2001, the CPUC issued an order (Decision 01-03-067) (the
"March 2001 Decision") proposing to change, on a prospective basis, the
composition of the short run avoided cost ("SRAC") energy price formula, which
is reset monthly, used by the California utilities in QF contracts. Prior to the
March 2001 Decision, CPUC regulations calculated SRAC based on 50% Topock and
50% Malin border gas indices. In the March 2001 Decision, the CPUC changed this
formulation to eliminate the prices at Topock from the SRAC formula. The March
2001 Decision is subject to challenges at the CPUC and the Federal Regulatory
Energy Commission.

     On June 14, 2001, however, the CPUC issued an order (Decision 01-06-015)
(the "June 2001 Decision") that authorized the California utilities, including
PG&E, to amend QF contracts to elect a fixed energy price component that
averages 5.37 cents per kilowatt-hour for a five-year term under those contracts
in lieu of using the SRAC energy price formula. By this order, the CPUC
authorized the QF contract energy price amendments without further CPUC
concurrence. As part of the agreement we entered into with PG&E pursuant to
which PG&E agreed to assume its QF contracts with us in bankruptcy, PG&E agreed
with us to amend these contracts to adopt the fixed price component that
averages 5.37 cents pursuant to the June 2001 Decision. This election became
effective as of July 16, 2001. As a result of the June 2001 Decision and our
agreement with PG&E to amend the QF contracts to adopt the fixed price energy
component, the energy price component in our QF contracts is now fixed for five
years and we are no longer subject to any uncertainty that may have existed with
respect to this component of our QF contract pricing as a result of the March
2001 Decision. Further, the March 2001 Decision has no bearing on PG&E's
agreement with us to assume the QF contracts in bankruptcy or on the amount of
the receivable that was so assumed.

     California Long-Term Supply Contracts. California has adopted legislation
permitting it to issue long-term revenue bonds to provide funding for wholesale
purchases of power. The bonds will be repaid with the proceeds of payments by
retail customers over time. The California Department of Water Resources ("DWR")
sought bids for long-term power supply contracts in a publicly announced
auction. Calpine successfully bid in that auction and signed several long-term
power supply contracts with DWR.

                                        7
<PAGE>   12

     On February 7, 2001, we announced the signing of a 10-year, $4.6 billion
fixed-price contract with DWR to provide electricity to the State of California.
We committed to sell up to 1,000 megawatts of electricity, with initial
deliveries of 200 megawatts starting October 1, 2001, which increases to 1,000
megawatts by January 1, 2004. The electricity will be sold directly to DWR on a
24-hour, 7-day-a-week basis. This contract is contingent upon our satisfaction,
in our sole discretion, that adequate provisions have been made by DWR to assure
us of full payment under the terms of that contract (including the terms and
conditions of any bonds issued by DWR to provide funds for payment of its
obligations under the contract).

     On February 28, 2001, we announced the signing of two long-term power sales
contracts with DWR. Under the terms of the first contract, a $5.2 billion,
10-year, fixed-price contract, Calpine committed to sell up to 1,000 megawatts
of generation. Initial deliveries began July 1, 2001, with 200 megawatts and
increase to 1,000 megawatts by as early as July 2002. Under the terms of the
second contract, a 20-year contract totaling up to $3.1 billion, Calpine will
supply DWR with up to 495 megawatts of peaking generation, beginning with 90
megawatts as early as August 2001, and increasing up to 495 megawatts as early
as August 2002. Each of these contracts is also contingent upon our
satisfaction, in our sole discretion, that adequate provisions have been made by
DWR to assure us of full payment under the terms of that contract (including,
but not limited to, the terms and conditions of any bonds issued by DWR to
provide funds for payment of its obligations under that contract).

     FERC Investigation into California Wholesale Markets. In response to the
increase in wholesale energy prices in the California markets, on June 28, 2000,
the Board of Governors of the California Independent System Operator (the
"ISO"), which controls the long-distance high-voltage power lines that deliver
electricity throughout California and the adjoining states, reduced the price
cap applicable to the ISO's wholesale energy and ancillary services markets from
$750/MWh to $500/MWh. The ISO subsequently reduced the price cap to $250/MWh
effective August 7, 2000. During this period, however, the PX maintained a
separate price cap set at a much higher level applicable to the "day-ahead" and
"day-of" markets administered by the PX. On August 23, 2000, the Federal Energy
Regulatory Commission ("FERC") denied a complaint filed August 2, 2000, by San
Diego Gas & Electric Company ("SDG&E") that sought to extend the ISO's $250
price cap to all California energy and ancillary service markets, not just the
markets administered by the ISO. However, in its order denying the relief sought
by SDG&E, FERC instructed its staff to initiate an investigation of the
California power markets and to report its findings to FERC and held further
hearing procedures in abeyance pending the outcome of this investigation. Under
FERC regulations, QF contracts are exempt from regulation under the Federal
Power Act, which is the legislation that provides the authority for FERC to
investigate the California power markets and frame equitable relief with respect
to the California wholesale markets. Therefore, any such relief will only apply
to sales by Calpine in the short-term market. None of our receivables related to
power produced under our long-term QF contracts with PG&E should be affected by
any FERC findings pursuant to the proceedings described below. See "Government
Regulation -- Federal Energy Regulation -- Federal Power Act Regulation" set
forth in our Annual Report on Form 10-K for the year ended December 31, 2000,
which is incorporated by reference in this prospectus.

     On November 1, 2000, FERC released a Staff Report detailing the results of
the staff investigation, together with an "Order Proposing Remedies for
California Wholesale Markets" (the "November 1 Order"). In the November 1 Order,
FERC found that the California power market structure and market rules were
seriously flawed, and that these flaws, together with short supply relative to
demand, resulted in unusually high energy prices. The November 1 Order proposed
specific remedies to the identified market flaws, including (a) imposition of a
so-called "soft" price cap at $150/MWh to be applied to both the PX and ISO
markets, which would allow bids above $150/MWh to be accepted, but would subject
such bids to certain reporting obligations requiring sellers to provide cost
data and/or identify applicable opportunity costs and specifying that such bids
may not set the overall market clearing price; (b) elimination of the
requirement that the California utilities sell into and buy from the PX; (c)
establishment of independent non-stakeholder governing boards for the ISO and
the PX; and (d) establishment of penalty charges for scheduling deviations
outside of a prescribed range. In the November 1 Order, FERC established

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<PAGE>   13

October 2, 2000, the date 60 days after the filing of the SDG&E complaint, as
the "refund effective date." Under the November 1 Order, rates charged for
service after that date through December 31, 2002, will remain subject to refund
if determined by FERC not to be just and reasonable. While FERC concluded that
the Federal Power Act and prior court decisions interpreting that act strongly
suggested that refunds would not be permissible for charges in the period prior
to October 2, 2000, it noted that it was willing to explore proposals for
equitable relief with respect to charges made in that period.

     On December 15, 2000, FERC issued a subsequent order that affirmed in large
measure the November 1 Order (the "December 15 Order"). Various parties have
filed requests for administrative rehearing and for judicial review of aspects
of FERC's December 15 Order. The outcome of these proceedings, and the extent to
which FERC or a reviewing court may revise aspects of the December 15 Order or
the extent to which these proceedings may result in a refund of or reduction in
the amounts charged by the Company's subsidiaries for power sold in the ISO and
PX markets, cannot be determined at this time.

     On June 19, 2001, FERC ordered price mitigation in 11 states in the western
United States in an attempt to reduce the dependence of the California market on
the spot markets in favor of longer-term committed energy supplies. The order
provides for price mitigation in the spot market throughout the 11-state western
region during "reserve deficiency hours," which is when operating reserves in
California fall below 7%. This price will be a single market clearing price
based upon the marginal operating cost of the last unit dispatched by the
California ISO. In addition, FERC implemented price mitigation in non-reserve
deficiency hours, which will be set at 85% of the market clearing price during
the last reserve deficiency period. These price mitigation procedures went into
effect on June 20, 2001 and will remain in effect until September 30, 2002.

     The retention by FERC of a market-based, rather than a cost-of-service
based, rate structure will enable us to continue to realize benefits from our
efficient, modern power plants. We believe that Calpine's marginal costs will
continue to be below any price cap imposed by FERC, whether during reserve
deficiency hours or at other times. Therefore, we believe that FERC's mitigation
plan will not have a material adverse effect on Calpine's financial condition or
results of operations.

     FERC also ordered all sellers and buyers in wholesale power markets
administered by the California ISO, as well as representatives of the State of
California, to participate in a settlement conference before a FERC
administrative judge. The settlement discussions were intended to resolve all
issues that remain outstanding to resolve past accounts, including sellers'
claims for unpaid invoices, and buyers' claims for refunds of alleged
overcharges, for past periods. The settlement discussions began on June 25, 2001
and ended on July 9, 2001. The Chief Administrative Law Judge issued his report
and recommendation to FERC on July 12, 2001. On July 25, 2001, FERC ordered an
expedited fact-finding hearing to calculate refunds for spot market transactions
in California. The hearing must be completed within 45 days from the date the
California ISO provides certain critical data for the purpose of developing the
factual basis needed to implement the refund methodology and order refunds.
While it is not possible to predict the amount of any refunds until the hearings
take place, based upon the information available at this time, we do not believe
that this proceeding will result in a material adverse effect on Calpine's
financial condition or results of operations.

PRINCIPAL EXECUTIVE OFFICES

     Our principal executive offices are located at 50 West San Fernando Street,
San Jose, California 95113. Our telephone number is (408) 995-5115, and our home
page on the world wide web is at http://www.calpine.com. The contents of our
website are not part of this prospectus.

                       CALPINE CANADA ENERGY FINANCE ULC

     Energy Finance is an unlimited liability company organized in March 2001
under the laws of Nova Scotia, Canada. It is an indirect, wholly-owned special
purpose finance subsidiary of Calpine that engages

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<PAGE>   14

in financing activities to raise funds for the business operations of Calpine
and its subsidiaries. Its direct parent company is Quintana Canada Holdings,
LLC, a Delaware limited liability company. Energy Finance will issue debt
securities which will be fully and unconditionally guaranteed by Calpine.

     Pursuant to Rule 3-10 of Regulation S-X promulgated by the SEC, we are not
required to include separate financial statements for Energy Finance in this
prospectus, because:

     - all of the voting rights of Energy Finance are owned by Calpine, either
       directly or through its wholly-owned subsidiaries, and Calpine files
       periodic and other reports with the SEC pursuant to the Securities
       Exchange Act of 1934;

     - its sole operations are the investment of funds in Calpine and its
       subsidiaries; and

     - Calpine will fully and unconditionally guarantee its obligations and the
       rights of holders under its debt securities and no subsidiary of Calpine
       will guarantee its obligations.

     The registered office of Energy Finance is Suite 800, Purdy's Wharf, Tower
1, 1959 Upper Water Street, P.O. Box 997, Halifax, Nova Scotia B3J 3N2,
telephone (902) 420-3335.

                      CALPINE CANADA ENERGY FINANCE II ULC

     Energy Finance II is an unlimited liability company organized in July 2001
under the laws of Nova Scotia, Canada. It is an indirect, wholly-owned special
purpose finance subsidiary of Calpine that engages in financing activities to
raise funds for the business operations of Calpine and its subsidiaries. Its
direct parent company is Calpine Canada Resources Ltd., an Alberta, Canada
corporation. Energy Finance II will issue debt securities which will be fully
and unconditionally guaranteed by Calpine.

     Pursuant to Rule 3-10 of Regulation S-X promulgated by the SEC, we are not
required to include separate financial statements for Energy Finance II in this
prospectus, because:

     - all of the voting rights of Energy Finance II are owned by Calpine,
       either directly or through its wholly-owned subsidiaries, and Calpine
       files periodic and other reports with the SEC pursuant to the Securities
       Exchange Act of 1934;

     - its sole operations are the investment of funds in Calpine and its
       subsidiaries; and

     - Calpine will fully and unconditionally guarantee its obligations and the
       rights of holders under its debt securities and no subsidiary of Calpine
       will guarantee its obligations.

     The registered office of Energy Finance II is Suite 800, Purdy's Wharf,
Tower 1, 1959 Upper Water Street, P.O. Box 997, Halifax, Nova Scotia B3J 3N2,
telephone (902) 420-3335.

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<PAGE>   15

                                  RISK FACTORS

     Investing in our securities involves risk. Please see the risk factors
described in our Annual Report on Form 10-K for the year ended December 31,
2000, and our Quarterly Report on Form 10-Q for the quarter ended March 30,
2001, each of which are incorporated by reference in this prospectus. Before
making an investment decision, you should carefully consider these risks as well
as other information contained or incorporated by reference in this prospectus.
The risks and uncertainties described are not the only ones facing us.
Additional risks and uncertainties not presently known to either of us or that
we currently deem immaterial may also impair our respective business operations.

                      WHERE YOU CAN FIND MORE INFORMATION;
                      DOCUMENTS INCORPORATED BY REFERENCE

     Calpine files annual, quarterly and special reports, proxy statements and
other information with the Securities and Exchange Commission (the "SEC"). You
may obtain any document we file with the SEC at the SEC's public reference room
in Washington, D.C., Chicago, Illinois and New York, New York. You may obtain
information on the operation of the SEC's public reference facilities by calling
the SEC at 1-800-SEC-0330. You can request copies of these documents, upon
payment of a duplicating fee, by writing to the SEC at its principal office at
450 Fifth Street, N.W., Washington, D.C. 20549-1004. Our SEC filings are also
accessible through the Internet at the SEC's website at http://www.sec.gov.

     Energy Finance II is not currently subject to the information reporting
requirements of the Securities Exchange Act of 1934, as amended. Although Energy
Finance is subject to such requirements, and Energy Finance II will become
subject to such requirements upon the effectiveness of this registration
statement, in reliance upon the applicable exemption to such requirements,
neither Energy Finance nor Energy Finance II will be required to file separate
reports under the Securities Exchange Act for the reasons set forth under the
captions "Calpine Canada Energy Finance LLC" and "Calpine Canada Energy Finance
II LLC" above.

     The SEC permits us to "incorporate by reference" into this prospectus the
information in documents we file with it, which means that we can disclose
important information to you by referring you to those documents. The
information incorporated by reference is considered to be a part of this
prospectus and later information that we file with the SEC will update and
supersede this information. We incorporate by reference the documents listed
below and any future filings made with the SEC under Sections 13(a), 13(c), 14
or 15(d) of the Securities Exchange Act until we sell all of the securities
being registered or until this offering is otherwise terminated:

     - Calpine's Annual Report on Form 10-K for the year ended December 31,
       2000;

     - Calpine's Quarterly Report on Form 10-Q for the quarter ended March 31,
       2001;

     - Calpine's Current Reports on Form 8-K dated February 6, 2001, April 9,
       2001, April 19, 2001, April 26, 2001, June 26, 2001, July 6, 2001, July
       12, 2001, July 16, 2001, and July 26, 2001; and

     - the description of Calpine's common stock contained in Calpine's
       Registration Statement on Form 8-A (File No. 001-12079), filed with the
       SEC on August 20, 1996, pursuant to Section 12 of the Securities Exchange
       Act.

     If you request a copy of any or all of the documents incorporated by
reference, then we will send to you the copies you requested at no charge.
However, we will not send exhibits to such documents, unless such exhibits are
specifically incorporated by reference in such documents. You should direct
requests for such copies to Calpine Corporation, 50 West San Fernando Street,
San Jose, California 95113, attention: Lisa M. Bodensteiner, Assistant
Secretary, telephone: (408) 995-5115.

     We have filed with the SEC a joint registration statement on Form S-3 under
the Securities Act, covering the securities described in this prospectus. This
prospectus does not contain all of the information included in the registration
statement. Any statement made in this prospectus concerning the contents of

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<PAGE>   16

any contract, agreement or other document is only a summary of the actual
contract, agreement or other document. If we have filed any contract, agreement
or other document as an exhibit to the registration statement, you should read
the exhibit for a more complete understanding of the document or matter
involved. Each statement regarding a contract, agreement or other document is
qualified in its entirety by reference to the actual document. Copies of
documents described herein are available free of charge upon request as provided
in the preceding paragraph.

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<PAGE>   17

                           FORWARD-LOOKING STATEMENTS

     Some of the statements contained in this prospectus or any prospectus
supplement and incorporated by reference into this prospectus or any prospectus
supplement are forward-looking statements within the meaning of Section 27A of
the Securities Act and Section 21E of the Securities Exchange Act and are
subject to the safe harbor created by the Private Securities Litigation Reform
Act of 1995. These statements include declarations regarding our respective, or
our respective management's, intents, beliefs or current expectations. In some
cases, you can identify forward-looking statements by terminology such as "may,"
"will," "should," "expects," "plans," "anticipates," "believes," "estimates,"
"predicts," "potential," or "continue" or the negative of such terms or other
comparable terminology. Any forward-looking statements are not guarantees of
future performance and actual results could differ materially from those
indicated by the forward-looking statements. Forward-looking statements involve
known and unknown risks, uncertainties, and other factors that may cause our
respective, or our respective industry's, actual results, levels of activity,
performance, or achievements to be materially different from any future results,
levels of activity, performance, or achievements expressed or implied by such
forward-looking statements.

     Among the important factors that could cause actual results to differ
materially from those indicated by such forward-looking statements are:

     - changes in government regulations, including pending changes in
       California and anticipated deregulation of the electric energy industry;

     - commercial operations of new plants that may be delayed or prevented
       because of various development and construction risks, such as a failure
       to obtain financing and the necessary permits to operate or the failure
       of third-party contractors to perform their contractual obligations;

     - cost estimates are preliminary and actual costs may be higher than
       estimated;

     - the assurance that Calpine will develop additional plants;

     - a competitor's development of lower-cost generating gas-fired power
       plants;

     - the risks associated with marketing and selling power from power plants
       in the newly competitive energy market;

     - the risks associated with marketing and selling combustion turbine parts
       and components in the competitive combustion turbine parts market;

     - the risks associated with engineering, designing and manufacturing
       combustion turbine parts and components;

     - delivery and performance risks associated with combustion turbine parts
       and components attributable to production, quality control, suppliers and
       transportation;

     - the successful exploitation of an oil or gas resource that ultimately
       depends upon the geology of the resource, the total amount and costs to
       develop recoverable reserves and operations factors relating to the
       extraction of natural gas;

     - the uncertainty of the California power market. We are working closely
       with a number of parties to resolve the current uncertainty. This is an
       ongoing process and, therefore, the outcome cannot be predicted. It is
       possible that any such outcome will include changes in government
       regulations, business and contractual relationships or other factors that
       could materially affect us; however, we believe that a final resolution
       will not have a material adverse impact on us; and

     - other risks identified from time to time in our reports and registration
       statements filed with the SEC, including the risk factors identified in
       our Annual Report on Form 10-K for the year ended December 31, 2000, and
       Quarterly Report on Form 10-Q for the quarter ended March 31, 2001, which
       are incorporated by reference in this prospectus.

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<PAGE>   18

     Although we believe that the expectations reflected in the forward-looking
statements are reasonable, we cannot guarantee future results, levels of
activity, performance or achievements. Moreover, neither we nor any other person
assumes responsibility for the accuracy and completeness of such statements. We
are under no duty to update any of the forward-looking statements after the date
of this prospectus to conform such statements to actual results.

            CALPINE CONSOLIDATED RATIO OF EARNINGS TO FIXED CHARGES

     The following table sets forth Calpine's consolidated ratio of earnings to
fixed charges for the indicated periods. This information does not reflect any
impact on Calpine's financial position or results of operations that will result
from its business combination under the pooling-of-interests method of
accounting with Encal on April 19, 2001.

<Table>
<Caption>
       YEAR ENDED DECEMBER 31,           THREE MONTHS
-------------------------------------   ENDED MARCH 31,
1996    1997    1998    1999    2000         2001
-----   -----   -----   -----   -----   ---------------
<S>     <C>     <C>     <C>     <C>     <C>
1.46x.. 1.72x   1.69x   1.77x   2.04x        1.37x
</Table>

     For purposes of computing our consolidated ratio of earnings to fixed
charges, earnings consist of pretax income before adjustment for minority
interests in our consolidated subsidiaries or income or loss from equity
investees, plus fixed charges, amortization of capitalized interest, and
distributed income of equity investees, reduced by interest capitalized and the
minority interest in pretax income of subsidiaries that have not incurred fixed
charges. Fixed charges consist of interest expensed and capitalized (including
amortized premiums, discounts and capitalized expenses related to indebtedness),
an estimate of the interest within rental expense, and the distributions on the
company-obligated mandatorily redeemable convertible preferred securities of
subsidiary trusts ("HIGH TIDES"(SM)). This information does not reflect any
impact on our financial position or results of operations that will result from
our business combination under the pooling-of-interests method of accounting
consummated on April 19, 2001 with Encal.

                                USE OF PROCEEDS

     Unless otherwise specified in a prospectus supplement accompanying this
prospectus, we will add the net proceeds from the sale of the securities to
which this prospectus and the prospectus supplement relate to our general funds,
which we will use, directly or indirectly, for financing power projects under
development or construction, working capital, general corporate purposes and any
other purpose specified in a prospectus supplement. We may conduct concurrent or
additional financings at any time. The net proceeds from the sale of debt
securities by Energy Finance or Energy Finance II to which this prospectus
relates will be lent to Calpine or its affiliates by Energy Finance or Energy
Finance II, as applicable, pursuant to one or more intercompany loans.

                              PLAN OF DISTRIBUTION

     We may sell our securities through agents, underwriters, dealers or
directly to purchasers.

     - Unless we indicate otherwise in the prospectus supplement, our agents
       will act on a best efforts basis for the period of their appointment.

     - Our agents may be deemed to be underwriters under the Securities Act of
       any of our securities that they offer or sell.

     If we use an underwriter or underwriters in the offer or sale of our
securities:

     - We will execute an underwriting agreement with the underwriter or
       underwriters at the time that we reach an agreement for the sale of our
       securities.

                                        14
<PAGE>   19

     - We will include the names of the specific managing underwriter or
       underwriters, as well as any other underwriters, and the terms of the
       transactions, including the compensation the underwriters and dealers
       will receive, in our prospectus supplement.

     - The underwriters will use our prospectus supplement to sell our
       securities.

     If we use a dealer to sell our securities:

     - We, as principal, will sell our securities to the dealer.

     - The dealer will then sell our securities to the public at varying prices
       that the dealer will determine at the time it sells our securities.

     - We will include the name of the dealer and the terms of our transactions
       with the dealer in our prospectus supplement.

     We may directly solicit offers to purchase our securities, and we may
directly sell our securities to institutional or other investors. We will
describe the terms of our direct sales in our prospectus supplement.

     Agents, underwriters, and dealers may be entitled, under agreements entered
into with us, to indemnification by Calpine and, if applicable, Energy Finance
or Energy Finance II, against certain liabilities, including liabilities under
the Securities Act. Our agents, underwriters, and dealers, or their affiliates,
may be customers of, engage in transactions with or perform services for us, in
the ordinary course of business.

     We may authorize our agents and underwriters to solicit offers by certain
institutions to purchase our securities at the public offering price under
delayed delivery contracts.

     - If we used delayed delivery contracts, we will disclose that we are using
       them in our prospectus supplement and will tell you when we will demand
       payment and delivery of the securities under the delayed delivery
       contracts.

     - These delayed delivery contracts will be subject only to the conditions
       that we set forth in our prospectus supplement.

     - We will indicate in our prospectus supplement the commission that
       underwriters and agents soliciting purchases of our securities under
       delayed contracts will be entitled to receive.

                                        15
<PAGE>   20

                          DESCRIPTION OF CAPITAL STOCK

     Calpine's authorized capital stock consists of 1,000,000,000 shares of
common stock, $.001 par value, and 10,000,000 shares of preferred stock, $.001
par value. The following summary is qualified in its entirety by the provisions
of Calpine's certificate of incorporation and by-laws, which have been
incorporated by reference as exhibits to the Registration Statement of which
this prospectus constitutes a part. The information provided below reflects the
2 for 1 split of Calpine's common stock that became effective on October 7,
1999, the 2 for 1 split of Calpine's common stock that became effective on June
8, 2000 and the 2 for 1 split of Calpine's common stock that became effective on
November 14, 2000.

COMMON STOCK

     The holders of common stock are entitled to one vote per share on all
matters to be voted upon by stockholders. Subject to preferences that may be
applicable to any outstanding preferred stock, the holders of common stock are
entitled to receive ratably such dividends, if any, as may be declared from time
to time by the board of directors out of legally available funds. See "Dividend
Policy." In the event of our liquidation, dissolution or winding up, the holders
of common stock are entitled to share ratably in all assets remaining after
payment of liabilities, subject to prior liquidation rights of preferred stock,
if any, then outstanding. The common stock has no preemptive or conversion
rights or other subscription rights. There are no redemption or sinking fund
provisions applicable to the common stock. All shares of common stock to be
outstanding upon the redemption or exchange of the exchangeable shares will be
fully paid and non-assessable. Pursuant to a rights agreement entered into in
June 1997, Calpine's shares of common stock outstanding prior to the occurrence
of events specified in the rights agreement have certain preferred share
purchase rights, which are set forth in more detail in the rights agreement
incorporated by reference as an exhibit to the Registration Statement of which
this prospectus constitutes a part. See "-- Anti-Takeover Effects of Provisions
of the Certificate of Incorporation, Bylaws, Rights Plan and Delaware
Law -- Rights Plan."

PRICE RANGE OF COMMON STOCK

     Calpine's common stock is traded on the New York Stock Exchange under the
symbol "CPN." Public trading of the common stock commenced on September 20,
1996. Prior to that, there was no public market for the common stock. The
following table sets forth, for the periods indicated, the high and low sale
price per share of the common stock on the New York Stock Exchange. The
information in the following table reflects the 2 for 1 stock split that became
effective on October 7, 1999, the 2 for 1 stock split that became effective on
June 8, 2000, and the 2 for 1 stock split that became effective on November 14,
2000.

<Table>
<Caption>
                                                            HIGH        LOW
                                                           -------    -------
<S>                                                        <C>        <C>
1999
First Quarter............................................  $ 4.672    $ 3.157
Second Quarter...........................................    7.375      4.391
Third Quarter............................................   11.969      6.852
Fourth Quarter...........................................   16.375     10.633

2000
First Quarter............................................  $30.750    $16.094
Second Quarter...........................................   35.219     18.125
Third Quarter............................................   52.250     32.250
Fourth Quarter...........................................   52.969     32.250

2001
First Quarter............................................  $ 58.04    $ 29.00
Second Quarter...........................................    57.35      36.20
Third Quarter (through August 10, 2001)..................    46.00      30.00
</Table>

                                        16
<PAGE>   21

     As of August 10, 2001, there were approximately 867 holders of record of
our common stock. On August 10, 2001, the last sale price reported on the New
York Stock Exchange for our common stock was $32.09 per share.

DIVIDEND POLICY

     We do not anticipate paying any cash dividends on Calpine's common stock in
the foreseeable future because we intend to retain our earnings to finance the
expansion of our business and for general corporate purposes. In addition, our
ability to pay cash dividends is restricted under certain of our indentures and
our other debt agreements. Future cash dividends, if any, will be at the
discretion of our board of directors and will depend upon, among other things,
our future operations and earnings, capital requirements, general financial
condition, contractual restrictions and such other factors as the board of
directors may deem relevant.

PREFERRED STOCK

     The following description of preferred stock and the description of the
terms of a particular series of preferred stock that will be set forth in the
related prospectus supplement are not complete. These descriptions are qualified
in their entirety by reference to the certificate of designation relating to
that series. The rights, preferences, privileges and restrictions of the
preferred stock of each series will be fixed by the certificate of designation
relating to that series that will be filed as an amendment to this registration
statement at the time such series of preferred stock is offered. The prospectus
supplement also will contain a description of certain United States federal
income tax consequences relating to the purchase and ownership of the series of
preferred stock that is described in the prospectus supplement.

     As of August 10, 2001, there was one share of our preferred stock
outstanding (see the discussion of Calpine's special voting preferred stock,
below). Our board of directors has the authority, without further vote or action
by the stockholders, to issue from time to time up to a total of 10,000,000
shares of preferred stock in one or more series, and to fix the rights,
preferences, privileges, qualifications, limitations and restrictions granted to
or imposed upon any wholly unissued shares of undesignated preferred stock,
including without limitation dividend rights, if any, voting rights, if any, and
liquidation and conversion rights, if any. The board of directors has the
authority to fix the number of shares constituting any series and the
designations of such series without any further vote or action by the
stockholders. The board of directors, without stockholder approval, can issue
preferred stock with voting and conversion rights which could adversely affect
the voting power of the holders of common stock. The issuance of preferred stock
may have the effect of delaying, deferring or preventing a change in control of
Calpine's company, or could delay or prevent a transaction that might otherwise
give Calpine's stockholders an opportunity to realize a premium over the then
prevailing market price of the common stock.

     Calpine's board of directors has authorized the issuance of up to 1,000,000
shares of Series A Participating Preferred Stock, par value $.001 per share,
pursuant to a rights plan adopted by Calpine's board of directors on June 5,
1997. As of August 10, 2001, no shares of Calpine's participating preferred
stock were outstanding. A description of the rights plan and the participating
preferred stock is set forth under "-- Anti-Takeover Effects of Provisions of
the Certificate of Incorporation, Bylaws, Rights Plan and Delaware -- Rights
Plan," below.

     Upon consummation of the Encal business combination, a series of preferred
stock of Calpine, consisting of one share, was designated as Special Voting
Preferred Stock of Calpine, having a par value of $.001 per share and a
liquidation preference of $.001. Except as otherwise required by law or
Calpine's certificate of incorporation, the one share of special voting
preferred stock possesses a number of votes for the election of directors and on
all other matters submitted to a vote of Calpine's stockholders equal to the
number of outstanding Calpine common stock equivalent shares issued by Calpine's
wholly-owned subsidiary, Calpine Canada Holdings Ltd., from time to time and not
owned by Calpine or any entity controlled by Calpine. The holders of Calpine
common stock and the holder of the special voting preferred stock vote together
as a single class on all matters on which holders of Calpine's common stock are

                                        17
<PAGE>   22

eligible to vote. In the event of Calpine's liquidation, dissolution or
winding-up, all outstanding Calpine common stock equivalent shares will
automatically be exchanged for shares of Calpine's common stock, and the holder
of the special voting preferred stock will not be entitled to receive any assets
available for distribution to Calpine's stockholders. The holder of the special
voting preferred stock will not be entitled to receive dividends. The share of
special voting preferred stock was issued to CIBC Mellon Trust Company, as
trustee under a voting and exchange trust agreement among Calpine, Calpine
Canada Holdings Ltd. and the trustee. At such time as the one share of special
voting preferred stock has no votes attached to it because there are no Calpine
common stock equivalent shares outstanding not owned by Calpine or an entity
controlled by Calpine, the one share of special voting preferred stock will be
canceled.

     A prospectus supplement with respect to the issuance of a series of
preferred stock will specify:

     - the maximum number of shares,

     - the designation of the shares,

     - the annual dividend rate, if any, whether the dividend rate is fixed or
       variable, whether the series of preferred stock will be issued with
       original issue discount and, if so, the computed dividend rate thereon,
       the date dividends will accrue, the dividend payment dates, and whether
       dividends will be cumulative,

     - the price and the terms and conditions for redemption, if any, including
       redemption at our option or at the option of the holders, including the
       time period for redemption, and any accumulated dividends or premiums,

     - the liquidation preference, if any, and any accumulated dividends upon
       the liquidation, dissolution or winding up Calpine's affairs,

     - any sinking fund or similar provision, and, if so, the terms and
       provisions relating to the purpose and operation of the fund,

     - the terms and conditions, if any, for conversion or exchange of shares of
       any other class or classes of our capital stock or any series of any
       other class or classes, or of any other series of the same class, or any
       other securities or assets, including the price or the rate of conversion
       or exchange and the method, if any, of adjustment,

     - the voting rights, if any, and

     - any or all other preferences and relative, participating, optional or
       other special rights, privileges or qualifications, limitations or
       restrictions.

     Preferred stock will be fully paid and nonassessable upon issuance. The
preferred stock or any series of preferred stock may be represented, in whole or
in part, by one or more global certificates, which will have an aggregate
liquidation preference equal to that of the preferred stock represented by the
global certificate.

     Each global certificate will:

     - be registered in the name of a depositary or a nominee of the depositary
       identified in the prospectus supplement,

     - be deposited with such depositary or nominee or a custodian for the
       depositary, and

     - bear a legend regarding the restrictions on exchanges and registration of
       transfer and any other matters as may be provided for under the
       certificate of designation.

                                        18
<PAGE>   23

ANTI-TAKEOVER EFFECTS OF PROVISIONS OF THE CERTIFICATE OF INCORPORATION, BYLAWS
AND DELAWARE LAW

CERTIFICATE OF INCORPORATION AND BYLAWS

     Calpine's certificate of incorporation provides that Calpine's board of
directors is classified into three classes of directors serving staggered,
three-year terms. The certificate of incorporation also provides that directors
may be removed only by the affirmative vote of the holders of two-thirds of the
shares of Calpine's capital stock entitled to vote, voting together as single
class. Any vacancy on the board of directors may be filled only by vote of the
majority of directors then in office. Further, the certificate of incorporation
provides that any business combination (as defined therein) requires the
affirmative vote of the holders of two-thirds of the shares of Calpine's capital
stock entitled to vote, voting together as a single class. The certificate of
incorporation also provides that all stockholder actions must be effected at a
duly called meeting and not by a consent in writing. The bylaws provide that
Calpine's stockholders may call a special meeting of stockholders only upon a
request of stockholders owning at least 50% of Calpine's capital stock. These
provisions of the certificate of incorporation and bylaws could discourage
potential acquisition proposals and could delay or prevent a change in control
of Calpine. These provisions are intended to enhance the likelihood of
continuity and stability in the composition of the board of directors and in the
policies formulated by the board of directors and to discourage certain types of
transactions that may involve an actual or threatened change of control of
Calpine's company. These provisions are designed to reduce Calpine's
vulnerability to an unsolicited acquisition proposal. The provisions also are
intended to discourage certain tactics that may be used in proxy fights.
However, such provisions could have the effect of discouraging others from
making tender offers for Calpine's shares and, as a consequence, they also may
inhibit fluctuations in the market price of Calpine's shares that could result
from actual or rumored takeover attempts. Such provisions also may have the
effect of preventing changes in Calpine's management.

     Rights Plan. On June 5, 1997, Calpine adopted a stockholders' rights plan
to strengthen Calpine's ability to protect Calpine's stockholders. The rights
plan is designed to protect against abusive or coercive takeover tactics that
are not in the best interests of Calpine or its stockholders. To implement the
rights plan, Calpine declared a dividend of one preferred share purchase right
for each outstanding share of Calpine's common stock held on record as of June
18, 1997, and directed the issuance of one preferred share purchase right with
respect to each share of Calpine's common stock that shall become outstanding
thereafter until the rights become exercisable or they expire as described
below. Each right initially represents a contingent right to purchase, under
certain circumstances, one one-thousandth of a share, called a "unit," of
Calpine's Series A Participating Preferred Stock, par value $.001 per share, at
a price of $80.00 per unit, subject to adjustment. The rights become exercisable
and trade independently from Calpine's common stock upon the public announcement
of the acquisition by a person or group of 15% or more of Calpine's common
stock, or ten days after commencement of a tender or exchange offer that would
result in the acquisition of 15% or more of Calpine's common stock. Each unit
purchased upon exercise of the rights will be entitled to a dividend equal to
any dividend declared per share of common stock and will have one vote, voting
together with the common stock. In the event of Calpine's liquidation, each
share of the participating preferred stock will be entitled to any payment made
per share of common stock.

     If Calpine is acquired in a merger or other business combination
transaction after a person or group has acquired 15% or more of Calpine's common
stock, each right will entitle its holder to purchase at the right's exercise
price a number of the acquiring company's shares of common stock having a market
value of twice the right's exercise price. In addition, if a person or group
acquires 15% or more of Calpine's common stock, each right will entitle its
holder (other than the acquiring person or group) to purchase, at the right's
exercise price, a number of fractional shares of Calpine's participating
preferred stock or shares of Calpine's common stock having a market value of
twice the right's exercise price.

     The rights expire on June 18, 2007, unless redeemed earlier by Calpine.
Calpine can redeem the rights at a price of $0.01 per right at any time before
the rights become exercisable, and thereafter only in limited circumstances.

                                        19
<PAGE>   24

DELAWARE ANTI-TAKEOVER STATUTE

     Calpine is subject to Section 203 of the Delaware General Corporation Law
("Section 203"), which, subject to certain exceptions, prohibits a Delaware
corporation from engaging in any business combination with any interested
stockholder for a period of three years following the date that such stockholder
became an interested stockholder, unless: (1) prior to such date, the board of
directors of the corporation approved either the business combination or the
transaction that resulted in the stockholder becoming an interested stockholder;
(2) upon consummation of the transaction that resulted in the stockholder
becoming an interested stockholder, the interested stockholder owned at least
85% of the voting stock of the corporation outstanding at the time the
transaction commenced, excluding for purposes of determining the number of
shares outstanding those shares owned (x) by persons who are directors and also
officers and (y) by employee stock plans in which employee participants do not
have the right to determine confidentially whether shares held subject to the
plan will be tendered in a tender or exchange offer; or (3) on or subsequent to
such date, the business combination is approved by the board of directors and
authorized at an annual or special meeting of stockholders, and not by written
consent, by the affirmative vote of at least 66 2/3% of the outstanding voting
stock that is not owned by the interested stockholder.

     Section 203 defines the term business combination to include: (1) any
merger or consolidation involving the corporation or any of its direct of
indirect majority-owned subsidiaries and the interested stockholder; (2) any
sale, transfer, pledge or other disposition of 10% or more of the assets of the
corporation or any of its direct of indirect majority-owned subsidiaries
involving the interested stockholder; (3) subject to certain exceptions, any
transaction that results in the issuance or transfer by the corporation of any
stock of the corporation or any of its direct of indirect majority-owned
subsidiaries of any stock of the corporation or that subsidiary to the
interested stockholder; (4) any transaction involving the corporation or any of
its direct of indirect majority-owned subsidiaries that has the effect of
increasing the proportionate share of the stock of any class or series of the
corporation or that subsidiary beneficially owned by the interested stockholder;
or (5) the receipt by the interested stockholder of the benefit of any loans,
advances, guarantees, pledges or other financial benefits provided by or through
the corporation or any of its direct of indirect majority-owned subsidiaries. In
general, Section 203 defines an interested stockholder as any entity or person
beneficially owning 15% or more of the outstanding voting stock of the
corporation and any entity or person affiliated with or controlling or
controlled by such entity or person.

                                        20
<PAGE>   25

                       DESCRIPTION OF THE DEBT SECURITIES

     The following is a general description of the debt securities to which this
prospectus and any prospectus supplement may relate. The particular terms
relating to each debt security will be set forth in a prospectus supplement.
Unless otherwise stated, the senior debt securities and the subordinated debt
securities are together referred to as the "debt securities."

GENERAL

     Calpine may issue from time to time one or more series of debt securities
under one or more separate indentures between Calpine and Wilmington Trust
Company, as trustee; Energy Finance may issue from time to time one or more
series of debt securities under one or more indentures between Energy Finance
and Wilmington Trust Company, as trustee; and Energy Finance II may issue from
time to time one or more series of debt securities under one or more indentures
between Energy Finance II and Wilmington Trust Company, as trustee.

     For purposes of this section, references to the "issuer" are to Calpine, in
the case of debt securities issued by Calpine, to Energy Finance, in the case of
debt securities issued by Energy Finance and to Energy Finance II, in the case
of debt securities issued by Energy Finance II, and references to the
"guarantor" are to Calpine with respect to debt securities issued by Energy
Finance or Energy Finance II. Additionally, in the case of debt securities
issued by Energy Finance or Energy Finance II, the term "indenture" includes the
guarantee agreement pursuant to which Calpine guarantees the debt securities.

     The debt securities will be direct, unsecured obligations of the issuer.
The senior debt securities will rank equally with all other senior debt of the
issuer. The indentures will not limit the amount of debt securities which the
issuer may issue. The subordination provisions of any subordinated debt
securities will be described in an applicable prospectus supplement.

     Almost all of Calpine's operations are conducted through Calpine's
subsidiaries and other affiliates. As a result, Calpine depends almost entirely
upon their earnings and cash flow to service Calpine's indebtedness, including
Calpine's ability to pay the interest on and principal of Calpine's debt
securities, and on the debt securities of Energy Finance and Energy Finance II
under the guarantees, if the guarantees are enforced. The non-recourse project
financing agreements of certain of Calpine's subsidiaries and other affiliates
generally restrict their ability to pay dividends, make distributions or
otherwise transfer funds to Calpine prior to the payment of other obligations,
including operating expenses, debt service and reserves. Each of Energy Finance
and Energy Finance II is a special purpose financing subsidiary formed solely as
a financing vehicle for Calpine and its subsidiaries. Therefore, the ability of
Energy Finance and Energy Finance II to pay their obligations under the debt
securities is dependent upon the receipt by them of payments from Calpine and
its subsidiaries to which they have made loans or otherwise under agreements
with them in connection with their respective financing activities. In addition,
under Canadian law, the respective direct parent companies of Energy Finance and
Energy Finance II will be liable for their subsidiary's indebtedness, including
any debt securities issued by such subsidiary, upon a winding-up of that
subsidiary. While each of Energy Finance and Energy Finance II believes that
payments made to it in connection with its financing activities will be
sufficient to pay the principal of, and interest on, any debt securities it
issues, if the responsible parties were not able to make such payments for any
reason, the holders of such debt securities would have to rely on the
enforcement of Calpine's guarantee described below.

     Calpine's subsidiaries and other affiliates are separate and distinct legal
entities and will have no obligation to pay any amounts due on the debt
securities issued by Calpine hereunder, and will not guarantee the payment of
interest on or principal of the debt securities issued by Calpine hereunder.
Calpine's subsidiaries and other affiliates (other than Energy Finance (in the
case of debt securities issued by Energy Finance) and Energy Finance II (in the
case of debt securities issued by Energy Finance II) and their direct parent
companies, respectively, in the case of the winding-up of its subsidiary) will
not have any obligation to pay any amounts due on the debt securities issued by
Energy Finance or Energy Finance II hereunder and none of Calpine's subsidiaries
or other affiliates will guarantee the payment of
                                        21
<PAGE>   26

interest on or principal of the debt securities issued by Energy Finance or
Energy Finance II hereunder. The right of Calpine's debt security holders to
receive any assets of any of Calpine's subsidiaries or other affiliates upon
Calpine's liquidation or reorganization will be subordinated to the claims of
any subsidiaries' or other affiliates' creditors (including trade creditors and
holders of debt issued by Calpine's subsidiaries or affiliates, including Energy
Finance and Energy Finance II). Similarly, the right of holders of Energy
Finance's or Energy Finance II's debt securities to receive any assets of any of
Calpine's subsidiaries or other affiliates upon Calpine's liquidation or
reorganization will be subordinated to the claims of any subsidiaries' or other
affiliates' creditors (including trade creditors and holders of debt issued by
Calpine's subsidiaries or affiliates). As of March 31, 2001, Calpine's
subsidiaries had approximately $1.7 billion of project financing. Calpine
intends to utilize project financing when appropriate in the future, and this
financing will be effectively senior to the debt securities and the guarantees.

     The following description of the debt securities is subject to the detailed
provisions of each indenture, a copy of each of which is filed as an exhibit to
the Registration Statement of which this prospectus is a part and is available
upon request made to us. Whenever particular provisions of any indenture or
terms defined therein are referred to, those provisions or definitions are
incorporated by reference herein and such descriptions are qualified in their
entirety by such reference. We urge you to read the forms of indentures because
they, and not this description, describe every detail of the terms of the debt
securities. The summary below of the general terms of the debt securities will
be supplemented by the more specific terms in a prospectus supplement. Unless
otherwise stated herein or in an applicable prospectus supplement, the following
indenture description will apply to both senior and subordinated debt
securities.

TERMS APPLICABLE TO DEBT SECURITIES

     The prospectus supplement for a particular series of debt securities will
specify the terms of the series of debt securities, including:

     - the designation, the aggregate principal amount and the authorized
       denominations, if other than $1,000 and integral multiples of $1,000;

     - the percentage of the principal amount at which the debt securities will
       be issued;

     - the date or date on which the debt securities will mature;

     - the currency, currencies or currency units in which payments on the debt
       securities will be payable;

     - the rate or rates at which the debt securities will bear interest, if
       any, or the method of determination of such rate or rates;

     - the date or dates from which the interest, if any, shall accrue, the
       dates on which the interest, if any, will be payable and the method of
       determining holders to whom any of the interest shall be payable;

     - the prices, if any, at which, and the dates at or after which, the issuer
       may or must repay, repurchase or redeem the debt securities;

     - any right to covert the debt securities into, or exchange the debt
       securities for, shares of Calpine common stock or other securities or
       property;

     - any sinking fund obligation with respect to the debt securities;

     - any special United States, and, in the case of debt securities issued by
       Energy Finance or Energy Finance II, Canadian, federal income tax
       consequences;

     - the exchanges, if any, on which the debt securities may be listed; and

     - any other material terms of the debt securities consistent with the
       provisions of the indenture.

     Unless otherwise specified in the prospectus supplement, the issuer will
compute interest payments on the basis of a 360-day year consisting of twelve
30-day months.

                                        22
<PAGE>   27

     Some of the debt securities may be issued as discounted debt securities to
be sold at a substantial discount below their stated principal amount. The
prospectus supplement relating to any discounted series of debt securities will
describe any Federal income tax consequences and other special consequences
applicable to discounted debt securities.

     The indentures governing the senior debt does not contain any provisions
that:

     - limit the issuer's ability to incur indebtedness; or

     - provide protection in the event the issuer chooses to engage in a highly
       leveraged transaction, reorganization, restructuring, merger or similar
       transaction.

REOPENING OF ISSUE

     The issuer may, from time to time, reopen an issue of debt securities and
issue additional debt securities with the same terms (including maturity date
and interest rate) as debt securities issued on an earlier date. After such
additional debt securities are issued, they will be fungible with the debt
securities issued on the earlier date.

RANKING

     The senior debt securities issued by Calpine will be unsecured and will
rank equal in right of payment with all of Calpine's existing and future
unsecured and unsubordinated indebtedness, including, without limitation,
Calpine's obligations under the Amended and Restated Credit Agreement, dated as
of May 23, 2000, as amended, among Calpine, the Bank of Nova Scotia, as Lead
Arranger and Administrative Agent, Bayerische Landesbank Girozentrale, as
Co-Arranger and Syndication Agent, and the various commercial lending
institutions named therein as lenders (as it may be further amended, refinanced,
replaced, renewed or extended from time to time), Calpine's other outstanding
senior debt securities, including Calpine's 7 5/8% Senior Notes Due 2006,
Calpine's 7 3/4% Senior Notes Due 2009, Calpine's 7 7/8% Senior Notes Due 2008,
Calpine's 8 3/4% Senior Notes Due 2007, Calpine's 10 1/2% Senior Notes Due 2006,
Calpine's 8 1/4% Senior Notes Due 2005, Calpine's 8 5/8% Senior Notes Due 2010,
Calpine's 8 1/2% Senior Notes Due 2011 and Calpine's Zero-Coupon Convertible
Debentures Due 2021, and indebtedness of its subsidiaries guaranteed by Calpine,
including the 8 1/2% Senior Notes Due 2008 issued by Energy Finance, the Bridge
Credit Agreement, dated as of             , 2001, among Energy Finance, Credit
Suisse First Boston, as co-arranger and syndication agent, Bayerische Landesbank
Girozentrale, as lead arranger and documentation agent, Bank of Nova Scotia, as
lead arranger and administrative agent, and the various commercial lending
institutions named therein as lenders and the Bridge Credit Agreement, dated as
of             , 2001, among Energy Finance II, Credit Suisse First Boston, as
co-arranger and syndication agent, Bayerische Landesbank Girozentrale, as lead
arranger and documentation agent, Bank of Nova Scotia, as lead arranger and
administrative agent, and the various commercial lending institutions named
therein as lenders. At March 31, 2001, Calpine had approximately $4.7 billion of
indebtedness outstanding that would rank equally with the senior debt
securities.

     Unless otherwise provided in the prospectus supplement relating to such
securities, debt securities issued by Energy Finance or Energy Finance II will
be:

     - senior unsecured obligations of Energy Finance or Energy Finance II, as
       applicable, and will rank equally and ratably with all of its other
       unsecured and unsubordinated indebtedness, and

     - guaranteed on a senior unsecured basis by Calpine, which guarantee will
       rank equally and ratably with all other unsecured and unsubordinated
       indebtedness of Calpine, including Calpine's indebtedness described above
       including the other indebtedness of its subsidiaries guaranteed by
       Calpine.

     The subordinated debt securities issued by Calpine will be subordinate and
junior in right of payment to all of Calpine's senior indebtedness, including
any guarantee by Calpine of senior debt securities of

                                        23
<PAGE>   28

Energy Finance and Energy Finance II. The subordinated debt securities of Energy
Finance and Energy Finance II will be subordinate and junior in right of payment
to all of their respective senior indebtedness.

GUARANTEES

     Calpine will fully and unconditionally guarantee to each holder of a debt
security issued by Energy Finance or Energy Finance II and authenticated and
delivered by the trustee the due and punctual payment of the principal of, and
any premium and interest on, the debt security, when and as it becomes due and
payable, whether at maturity, upon acceleration, by call for redemption,
repayment or otherwise in accordance with the terms of the debt securities and
of the related indenture. The claims of holders under the guarantee by Calpine
will be effectively subordinated to the claims of creditors of Calpine's
subsidiaries other than Energy Finance or Energy Finance II, as applicable.

     Under its guarantee agreement, Calpine will:

     - agree that, if an event of default occurs under the debt securities, its
       obligations under the guarantees will be absolute and unconditional and
       will be enforceable irrespective of any invalidity, irregularity or
       unenforceability of any series of the debt securities or the related
       indenture or any supplement thereto, and

     - waive its right to require the trustee or the holders to pursue or
       exhaust their legal or equitable remedies against Energy Finance or
       Energy Finance II before exercising their rights under the guarantees.

COVENANTS

     The indentures and the guarantee shall provide that, except as otherwise
set forth under "-- Defeasance," below, for so long as any debt securities
remain outstanding or any amount remains unpaid on any of the debt securities,
the issuer and the guarantor, if any, will comply with the applicable terms of
the covenants contained in the indentures or the guarantee, as applicable,
including the following:

PAYMENT OF SECURITIES

     The issuer will duly and punctually pay the principal of and interest on
the debt securities in accordance with the terms of the debt securities and the
indenture.

MAINTENANCE OF OFFICE OR AGENCY

     The issuer will maintain in the Borough of Manhattan, the City of New York,
and such other locations as may be required or specified in any supplement, an
office or agency where the debt securities may be paid and notices and demands
to or upon the issuer in respect of the debt securities and the indentures may
be served and an office or agency where debt securities may be surrendered for
registration of transfer or exchange. The issuer will give prompt written notice
to the trustee of the location, and any change in the location, of any such
office or agency. If at any time the issuer shall fail to maintain any required
office or agency or shall fail to furnish the trustee with the address of any
required office or agency, all presentations, surrenders, notices and demands
may be served at the office of the trustee.

FURTHER ASSURANCES

     The issuer, the guarantor, if any, and the trustee will execute and deliver
all documents, instruments and agreements, and do all other acts and things as
may be reasonably required, to enable the trustee to exercise and enforce its
rights under the indentures and under the documents, instruments and agreements
required under the indentures and to carry out the intent of the indentures.

                                        24
<PAGE>   29

LIMITATION ON SALE/LEASEBACK TRANSACTIONS

     Under the terms of the indentures, the issuer and the guarantor, if any,
shall not, and shall not permit any of their respective Restricted Subsidiaries
to, enter into any Sale/Leaseback Transaction unless:

          (a) the issuer or the guarantor, as the case may be, or the Restricted
     Subsidiary would be entitled to create a Lien on the property or asset
     subject to the Sale/Leaseback Transaction securing Indebtedness in an
     amount equal to the Attributable Debt with respect to that transaction
     without equally and ratably securing the debt securities pursuant to the
     covenant entitled "Limitation on Liens"; or

          (b) the net proceeds of the sale are at least equal to the fair value
     (as determined by board of directors of the issuer or the guarantor, as the
     case may be) of the property or asset subject to the Sale/Leaseback
     Transaction and the issuer or the guarantor, as the case may be, or the
     Restricted Subsidiary applies or causes to be applied, within 180 days of
     the effective date of the Sale/ Leaseback Transaction, an amount in cash
     equal to the net proceeds of the sale to the retirement of Indebtedness of
     the issuer or the guarantor, as the case may be, or of the Restricted
     Subsidiary.

     In addition to the transactions permitted pursuant to the above clauses (a)
and (b), the issuer and the guarantor, if any, or any of their respective
Restricted Subsidiaries may enter into a Sale/Leaseback Transaction as long as
the sum of:

     - the Attributable Debt with respect to that Sale/Leaseback Transaction and
       all other Sale/ Leaseback Transactions entered into pursuant to this
       provision; plus

     - the amount of outstanding Indebtedness secured by Liens incurred pursuant
       to the final provision to the covenant described under "-- Limitation on
       Liens" below;

does not exceed 15% of Consolidated Net Tangible Assets as determined based on
Calpine's consolidated balance sheet as of the end of the most recent fiscal
quarter for which financial statements are available. In addition, any
Restricted Subsidiary of the issuer or the guarantor, if any, may enter into a
Sale/ Leaseback Transaction with respect to property or assets owned by that
Restricted Subsidiary, so long as the proceeds of that Sale/Leaseback
Transaction are used to acquire, develop, construct, or repay (within 365 days
of the commencement of full commercial operation of any such property or assets)
Indebtedness incurred to acquire, develop or construct property or assets of any
Restricted Subsidiary.

     As used in the indentures, the following terms are defined as follows:

     "Attributable Debt" means, as at the time of determination, the present
value (discounted at the rate of interest set forth or implicit in terms of the
lease (or, if not practicable to determine that rate, the weighted average rate
of interest borne by the debt securities outstanding hereunder (calculated, in
the event of the issuance of any original issue discount debt securities, based
on the computed interest rate with respect thereto)), compounded annually) of
the total obligations of the lessee for rental payments during the remaining
term of the lease included in such Sale/Leaseback Transaction (including any
period for which such lease has been extended).

     "Capitalized Lease Obligations" of a person means the rental obligations
under any lease of any property (whether real, personal or mixed) of which the
discounted present value of the rental obligations of that person as lessee, in
conformity with generally accepted accounting principals, is required to be
capitalized on the balance sheet of that person; the stated maturity of any such
lease shall be the date of the last payment of rent or any other amount due
under such lease prior to the first date upon which such lease may be terminated
by the lessee without payment of a penalty.

     "Consolidated Current Liabilities," as of the date of determination, means
the aggregate amount of consolidated liabilities of Calpine and Calpine's
consolidated Restricted Subsidiaries which may properly be classified as current
liabilities (including taxes accrued as estimated), after eliminating (i) all
inter-company items between Calpine and its subsidiaries and (ii) all current
maturities of long-term Indebtedness, all as determined in accordance with
generally accepted accounting principles.

                                        25
<PAGE>   30

     "Consolidated Net Tangible Assets" means, as of any date of determination,
the total amount of Calpine's consolidated assets (less accumulated depreciation
or amortization, allowances for doubtful receivables, other applicable reserves
and other properly deductible items) under generally accepted accounting
principles which would appear on Calpine's consolidated balance sheet,
determined in accordance with generally accepted accounting principles, and
after giving effect to purchase accounting and after deducting therefrom, to the
extent otherwise included, the amounts of:

          (a) Consolidated Current Liabilities;

          (b) minority interests in Calpine's consolidated subsidiaries held by
     persons other than Calpine or any of its Restricted Subsidiaries;

          (c) excess of cost over fair value of assets of businesses acquired,
     as determined in good faith by Calpine's board of directors;

          (d) any revaluation or other write-up in value of assets subsequent to
     December 31, 1993 as a result of a change in the method of valuation in
     accordance with generally accepted accounting principles;

          (e) unamortized debt discount and expenses and other unamortized
     deferred charges, goodwill, patents, trademarks, service marks, trade
     names, copyrights, licenses, organization or developmental expenses and
     other intangible items;

          (f) treasury stock; and

          (g) any cash set apart and held in a sinking or other analogous fund
     established for the purpose of redemption or other retirement of capital
     stock to the extent such obligation is not reflected in Consolidated
     Current Liabilities.

     "Indebtedness" of any person means, without duplication:

          (a) the principal of and premium (if any premium is then due and
     owing) in respect of indebtedness of that person for money borrowed;

          (b) all Capitalized Lease Obligations of that person;

          (c) all obligations of that person for the reimbursement of any
     obligor on any letter of credit, banker's acceptance or similar credit
     transaction, other than obligations with respect to letters of credit
     securing obligations (other than obligations described in clauses (a) and
     (b) above) entered into in the ordinary course of business of that person
     to the extent such letters of credit are not drawn upon or, if and to the
     extent drawn upon, that drawing is reimbursed no later than the tenth
     business day following receipt by that person of a demand for reimbursement
     following payment on the letter of credit;

          (d) all obligations of the type referred to in clauses (a) through (c)
     above of other persons and all dividends of other persons for the payment
     of which, in either case, that person is responsible or liable, directly or
     indirectly, as obligor, guarantor or otherwise; and

          (e) all obligations of the type referred to in clauses (a) through (d)
     above of other persons secured by any Lien on any property or asset of that
     person (whether or not such obligation is assumed by that person), the
     amount of the obligation on any date of determination being deemed to be
     the lesser of the value of the property or assets or the amount of the
     obligation so secured.

     The amount of Indebtedness of any person at any date shall be, with respect
to unconditional obligations, the outstanding balance at such date of all such
obligations as described above and, with respect to any contingent obligations
at such date, the maximum liability determined by that person's board of
directors, in good faith, as in light of the facts and circumstances existing at
the time, reasonably likely to be incurred upon the occurrence of the
contingency giving rise to such obligation.

                                        26
<PAGE>   31

     "Lien" means any mortgage, lien, pledge, charge, or other security interest
or encumbrance of any kind (including any conditional sale or other title
retention agreement and any lease in the nature thereof).

     "Preferred Stock," as applied to the capital stock of any corporation,
means capital stock of any class or classes (however designated) which is
preferred as to the payment of dividends, or as to the distribution of assets
upon any voluntary or involuntary liquidation or dissolution of such
corporation, over shares of capital stock of any other class of such
corporation.

     "Restricted Subsidiary" means any subsidiary of a person that is not
designated an Unrestricted Subsidiary by that person's board of directors.

     "Sale/Leaseback Transaction" means an arrangement relating to property now
owned or later acquired whereby a person or one of such person's subsidiaries
transfers that property to another person and then leases it back from that
person, other than leases for a term of not more than 36 months or leases
between such person and a wholly owned subsidiary of such person or between such
person's wholly owned subsidiaries.

     "Senior Indebtedness" means all indebtedness incurred, assumed or
guaranteed by a person, whether or not represented by bonds, debentures notes or
other securities, for money borrowed, and any deferrals, renewals or extensions
or refunding of any such indebtedness, unless in the instrument creating or
evidencing any such indebtedness or pursuant to which the same is outstanding it
is specifically stated, at or prior to the time such person becomes liable in
respect thereof, that any such indebtedness or such deferral, renewal, extension
or refunding thereof is not Senior Indebtedness.

     "Subordinated Security" means any security issued under an Indenture which
is designated as a Subordinated Debt Security.

     "Unrestricted Subsidiary" means (i) any subsidiary that at the time of
determination shall be designated an Unrestricted Subsidiary by a person's board
of directors in the manner provided below and (ii) any subsidiary of an
Unrestricted Subsidiary. A person's board of directors may designate any
subsidiary (including any newly acquired or newly formed subsidiary) to be an
Unrestricted Subsidiary unless such subsidiary owns any capital stock of, or
owns or holds any Lien on any property of, that person or any other subsidiary
of that person that is not a subsidiary of the subsidiary to be so designated,
so long as the subsidiary to be designated an Unrestricted Subsidiary and all
other subsidiaries previously so designated at the time of any determination
hereunder shall, in the aggregate, have total assets not greater than 5% of
Consolidated Net Tangible Assets as determined based on Calpine's consolidated
balance sheet as of the end of the most recent financial quarter for which
financial statements are available. A person's board of directors may designate
any Unrestricted Subsidiary to be a Restricted Subsidiary; provided, however,
that immediately after giving effect to that designation no Default or Event of
Default under the indentures shall have occurred and be continuing. Any such
designation by a person's board of directors shall be evidenced to the trustee
by promptly filing with the trustee a copy of the board resolution giving effect
to the designation and a certificate signed by two of that person's officers
certifying that the designation complied with these provisions. However, the
failure to file the resolution and/or certificate with the trustee shall not
impair or affect the validity of the designation.

LIMITATION ON LIENS

     Under the terms of the indentures, the issuer and the guarantor, if any,
shall not, and shall not permit any of their respective Restricted Subsidiaries
to, incur any Lien upon any properties (including capital stock) without
effectively providing that the outstanding debt securities shall be secured
equally and ratably with (or prior to) that Indebtedness, so long as that
Indebtedness shall be so secured. The above restriction on Liens will not,
however, apply to:

          (a)(1) Liens securing Indebtedness incurred to finance the
     exploration, drilling, development, construction or purchase of or by, or
     repairs, improvements or additions to, property or assets, which Liens may
     include Liens on the capital stock of a Restricted Subsidiary or (2) Liens
     incurred by any Restricted Subsidiary that does not own, directly or
     indirectly, at the time of such original incurrence
                                        27
<PAGE>   32

     of such Lien under this clause (2) any operating properties or assets
     securing Indebtedness incurred to finance the exploration, drilling,
     development, construction or purchase of or by or repairs, improvements or
     additions to, property or assets of any Restricted Subsidiary that does
     not, directly or indirectly, own any operating properties or assets at the
     time of such original incurrence of such Lien, which Liens may include
     Liens on the capital stock of one or more Restricted Subsidiaries that do
     not, directly or indirectly, own any operating properties or assets at the
     time of such original incurrence of such Lien, provided, however, that the
     Indebtedness secured by any such Lien may not be issued more than 365 days
     after the later of the exploration, drilling, development, completion of
     construction, purchase, repair, improvement, addition or commencement of
     full commercial operation of the property or assets being so financed;

          (b) Liens existing on the date of issuance of a series of debt
     securities, other than Liens relating to Indebtedness or other obligations
     being repaid or Liens that are otherwise extinguished with the proceeds of
     any offering of debt securities pursuant to the indenture;

          (c) Liens on property, assets or shares of stock of a person at the
     time that person becomes a subsidiary of the issuer or the guarantor, as
     applicable; provided, however, that any such Lien may not extend to any
     other property or assets owned by such issuer or guarantor or any of its
     Restricted Subsidiaries;

          (d) Liens on property or assets existing at the time that the issuer
     or the guarantor, as the case may be, or one of its subsidiaries, acquires
     the property or asset, including any acquisition by means of a merger or
     consolidation with or into the issuer or the guarantor, as applicable, or
     one of its subsidiaries; provided, however, that such Liens are not
     incurred in connection with, or in contemplation of, that merger or
     consolidation and provided, further, that the Lien may not extend to any
     other property or asset owned by the issuer or the guarantor, as
     applicable, or any of its Restricted Subsidiaries;

          (e) Liens securing Indebtedness or other obligations of one of the
     subsidiaries of the issuer or the guarantor, as the case may be, that is
     owing to such issuer or guarantor or any of its Restricted Subsidiaries, or
     Liens securing Indebtedness of the issuer or the guarantor, as the case may
     be, or other obligations that are owing to one of the subsidiaries of such
     issuer or guarantor;

          (f) Liens incurred on assets that are the subject of a Capitalized
     Lease Obligation to which the issuer or the guarantor, as the case may be,
     or any of its subsidiaries is a party, which shall include Liens on the
     stock or other ownership interest in one or more Restricted Subsidiaries of
     such issuer or guarantor, leasing such assets;

          (g) Liens to secure any refinancing, refunding, extension, renewal or
     replacement (or successive refinancings, refundings, extensions, renewals
     or replacements) as a whole, or in part, of any Indebtedness secured by any
     Lien referred to in clauses (a), (b), (c), (d) and (f) above, provided,
     however, that (1) such new Lien shall be limited to all or part of the same
     property or assets that secured the original Lien (plus repairs,
     improvements or additions to that property or assets and Liens on the stock
     or other ownership interest in one or more Restricted Subsidiaries
     beneficially owning that property or assets) and (2) the amount of
     Indebtedness secured by such Lien is not increased, other than by an amount
     necessary to pay fees and expenses, including premiums, related to the
     refinancing, refunding, extension, renewal or replacement of the
     Indebtedness; and

          (h) Liens by which the debt securities are secured equally and ratably
     with other Indebtedness pursuant to this covenant.

     However, the issuer and the guarantor, if any, and any one or more of their
respective Restricted Subsidiaries may incur other Liens to secure Indebtedness
as long as the sum of:

     - the lesser of (1) the amount of outstanding Indebtedness secured by Liens
       incurred pursuant to this provision and (2) the fair market value of the
       property securing that item of Indebtedness; plus

                                        28
<PAGE>   33

     - the Attributable Debt with respect to all Sale/Leaseback Transactions
       entered into pursuant to clause (a) described under the covenant
       "Limitation on Sale/Leaseback Transactions";

does not exceed 15% of Consolidated Net Tangible Assets as determined based on
Calpine's consolidated balance sheet as of the end of the most recent fiscal
quarter for which financial statements are available.

MERGER, CONSOLIDATION, SALE OR LEASE

     Nothing in the indentures shall prevent the issuer and the guarantor, if
any, from consolidating with or merging into another corporation or conveying,
transferring or leasing their respective properties and assets substantially as
an entirety to any person, provided that (a) the successor entity assumes the
obligations of the issuer or the guarantor, as the case may be, on each series
of debt securities outstanding and (b) immediately after giving effect to the
transaction, no Event of Default, and no event which, after notice or lapse of
time or both, would become an Event of Default, shall have occurred and be
continuing.

SEC REPORTS

     Calpine is subject to the informational reporting requirements of Sections
13 and 15(d) under the Securities Exchange Act and, in accordance with those
requirements, files certain reports and other information with the SEC. See
"Where You Can Find More Information; Documents Incorporated by Reference." In
addition, if Sections 13 and 15(d) cease to apply to Calpine, Calpine will
covenant in the indentures to file those reports and information with the
trustee, and to mail such reports and information to holders of the debt
securities at their registered addresses, for so long as any debt securities
remain outstanding.

COMPLIANCE CERTIFICATES

     The indentures will require that the issuer and the guarantor, if any, file
annually with the trustee a certificate describing any "Default," which is
defined in the indentures as any event which is, or after notice or passage of
time or both would be, an Event of Default, by the issuer or the guarantor, as
the case may be, in the performance of any conditions or covenants under the
indentures and the status of any such Default. The issuer and the guarantor, if
any, also must give the trustee written notice within 30 days of the occurrence
of certain Defaults under the indentures that could mature into Events of
Default, as described under the caption "-- Events of Default" below.

EVENTS OF DEFAULT

     "Events of Default" are defined in the indentures with respect to any
series of debt securities as any of the following:

          (a) default for 30 days in payment of any interest installment due and
     payable on any debt securities of such series;

          (b) default in payment of principal or premium, if any, when due on
     the debt securities of such series;

          (c) default in the making of any sinking fund payment or analogous
     obligation on the debt securities of such series;

          (d) material default in performance by the issuer or the guarantor, if
     any, of any other covenants or agreements in respect of the debt securities
     of such series contained in the applicable indenture or the debt securities
     for 60 days after written notice to the issuer and the guarantor, if any,
     or to the issuer, the guarantor, if any, and the trustee by the holders of
     at least 25% in aggregate principal amount of the debt securities of such
     series then outstanding;

          (e) there shall have occurred a default in the payment of the
     principal or premium, if any, of any bond, debenture, note or other
     evidence of indebtedness of the issuer or the guarantor, if any, in each
     case for money borrowed, or in the payment of principal or premium, if any,
     under any
                                        29
<PAGE>   34

     mortgage, indenture, agreement or instrument under which there may be
     issued or by which there may be secured or evidenced any indebtedness of
     the issuer or the guarantor, if any, for money borrowed (including any
     other series of debt securities issued under the indenture), which default
     for payment of principal or premium, if any, is in an aggregate principal
     amount exceeding $50,000,000 (or its equivalent in any other currency or
     currencies) when such indebtedness becomes due and payable (whether at
     maturity, upon redemption or acceleration or otherwise), if such default
     shall continue unremedied or unwaived for more than 30 business days after
     the expiration of any grace period or extension of the time for payment
     applicable thereto;

          (f) certain events of bankruptcy, insolvency and reorganization with
     respect to the issuer or guarantor, if any; and

          (g) the guarantee, if any, ceases to be in full force and effect
     (other than in accordance with terms of the guarantee agreement) or the
     guarantor denies or disaffirms its obligations under the guarantee.

     An Event of Default under one series of debt securities does not
necessarily constitute an Event of Default under any other series of debt
securities.

     The indentures provide that if an Event of Default occurs and is continuing
with respect to any series of debt securities, either the trustee or the
registered holders of at least 25% in aggregate principal amount of that series
of debt securities, may declare the principal amount of those debt securities
and any accrued and unpaid interest on those debt securities to be due and
payable immediately. At any time after a declaration of acceleration, but before
a judgment or decree for payment of money has been obtained, if all Events of
Default with respect to those debt securities have been cured (other than the
nonpayment of principal of such debt securities which has become due solely by
reason of the declaration of acceleration) then the declaration of acceleration
shall be automatically annulled and rescinded.

     The indentures will require that the issuer and the guarantor, if any, file
annually with the trustee a certificate describing any Default by the issuer or
the guarantor, as the case may be, in the performance of any conditions or
covenants that has occurred under the indentures and its status. See
"Covenants -- Compliance Reports." The issuer and the guarantor, if any, must
give the trustee written notice within 30 days of any Default under the
indentures that could mature into an Event of Default described in clause (d),
(e) or (f).

     The trustee will be entitled under the indentures, subject to the duty of
the trustee during a Default to act with the required standard of care, to be
indemnified before proceeding to exercise any right or power under the
indentures at the direction of the registered holders of the debt securities or
which requires the trustee to expend or risk its own funds or otherwise incur
any financial liability. The indentures will also provide that the registered
holders of a majority in principal amount of the outstanding debt securities of
any series issued under any indenture may direct the time, method and place of
conducting any proceeding for any remedy available to the trustee or exercising
any trust or power conferred on the trustee with respect to that series of debt
securities. The trustee, however, may refuse to follow any such direction that
conflicts with law or such indenture, is unduly prejudicial to the rights of
other registered holders of that series of debt securities, or would involve the
trustee in personal liability.

     The indentures will provide that while the trustee generally must mail
notice of a Default or Event of Default to the registered holders of the debt
securities of any series issued under any indenture within 90 days of
occurrence, the trustee may withhold notice of any Default or Event of Default
(except in payment on the debt securities) if the trustee in good faith
determines that the withholding of such notice is in the interest of the
registered holders of that series of debt securities.

MODIFICATION OF THE INDENTURES

     The issuer, the guarantor, if any, and the trustee may amend or supplement
the indentures, including any guarantee agreement, if the holders of a majority
in principal amount of the outstanding debt securities of each series of debt
securities affected by the amendment or supplement consent to it, except
                                        30
<PAGE>   35

that no amendment or supplement may, without the consent of each affected
registered holder of that series:

     - reduce the amount of principal the issuer has to repay or change the date
       of maturity,

     - reduce the rate or change the time of payment of interest,

     - change the currency of payment,

     - modify any redemption or repurchase right to the detriment of the holder,

     - reduce the percentage of the aggregate principal amount of debt
       securities needed to consent to an amendment or supplement,

     - change the provisions of the indentures relating to waiver of past
       defaults, rights of registered holders of the debt securities to receive
       payments or the provisions relating to amendments of the indentures that
       require the consent of registered holders of each affected series or

     - release the guarantee, if any, except in compliance with the terms of the
       guarantee agreement and related indenture.

ACTIONS BY HOLDERS

     A holder of any series of debt securities may not pursue any remedy with
respect to the indentures or the debt securities of such series (except a
registered holder of a series of debt securities may bring an action for payment
of overdue principal, premium, if any, or interest on that series), unless:

     - the registered holder has given notice to the trustee of such series of a
       continuing Event of Default,

     - registered holders of at least 25% in principal amount of that series of
       debt securities have made a written request to the trustee of such series
       to pursue such remedy,

     - such registered holder or holders have offered the trustee of such series
       security or indemnity reasonably satisfactory to the trustee against any
       loss, liability or expense,

     - the trustee of such series has not complied with such request within 60
       days of such request and offer, and

     - the registered holders of a majority in principal amount of that series
       of debt securities have not given the trustee of such series an
       inconsistent direction during that 60-day period.

DEFEASANCE, DISCHARGE AND TERMINATION

DEFEASANCE AND DISCHARGE

     Unless otherwise provided in the applicable indenture and described in the
applicable prospectus supplement, the issuer may discharge the issuer and the
guarantor, if any, from any and all obligations in respect of a series of debt
securities, and the provisions of the related indenture will no longer be in
effect with respect to that series of debt securities (except for, among other
matters, certain obligations to register the transfer or exchange of those debt
securities, to replace stolen, lost or mutilated debt securities, to maintain
paying agencies and to hold monies for payment in trust, and the rights of
holders of that series to receive payments of principal, premium, if any, and
interest), on the 123rd day after the date of the deposit with the trustee, in
trust, of money or U.S. Government Obligations that, through the payment of
interest, principal and premium, if any, in respect thereof in accordance with
their terms, will provide money, or a combination thereof, in an amount
sufficient to pay the principal, premium, if any, and interest on that series of
debt securities, when due in accordance with the terms of that indenture and
those debt securities. Such a trust may only be established if, among other
things,

          a. the issuer has delivered to the trustee either:

        - an opinion of counsel (who may not be an employee of ours) to the
          effect that registered holders of that series will not recognize
          income, gain or loss for federal income tax purposes as a result of
          such deposit, defeasance and discharge and will be subject to federal
          income tax on the same amount and in the same manner and at the same
          times as would have been the case if such deposit, defeasance and
          discharge had not occurred, which opinion of counsel must
                                        31
<PAGE>   36

          refer to and be based upon a ruling of the Internal Revenue Service or
          a change in applicable federal income tax law occurring after the date
          of that indenture; or

        - a ruling of the Internal Revenue Service to such effect; and

          b. no Default under the indenture with respect to that series shall
     have occurred and be continuing on the date of such deposit or during the
     period ending on the 123rd day after such date of deposit and such deposit
     shall not result in or constitute a Default or result in a breach or
     violation of, or constitute a default under, any other agreement or
     instrument to which the issuer or the guarantor, if any, is a party or by
     which the issuer or the guarantor, if any, is bound.

     "U.S. Government Obligations" are defined under the indentures as
securities that are (x) direct obligations of the United States for the payment
of which its full faith and credit is pledged or (y) obligations of a person
controlled or supervised by and acting as an agency or instrumentality of the
United States the payment of which is unconditionally guaranteed as a full faith
and credit obligation by the United States and which, in either case, are not
callable or redeemable before their maturity.

DEFEASANCE OF COVENANTS AND CERTAIN EVENTS OF DEFAULT

     In addition, unless otherwise provided in the applicable indenture and
described in the applicable prospectus supplement, with respect to a series of
debt securities issued under an indenture, the provisions of that indenture
described under "-- Covenants -- Limitation on Liens" and
"-- Covenants -- Limitation on Sale/Leaseback Transactions" will no longer be in
effect, clauses (c) (with respect to such covenants) and (d) under "-- Events of
Default" shall be deemed not to be Events of Default under that indenture, and
the provisions described herein under "-- Ranking" shall not apply, upon the
deposit with the trustee, in trust, of money or U.S. Government Obligations that
through the payment of interest and principal in respect thereof in accordance
with their terms will provide money in an amount sufficient to pay the
principal, premium, if any, and interest on that series of debt securities when
due in accordance with the terms of that indenture. Such a trust may only be
established if, among other things, the provisions described in clause (b) of
the immediately preceding paragraph have been satisfied and the issuer has
delivered to the trustee an opinion of counsel (who may not be an employee of
ours) to the effect that the registered holders of that series will not
recognize income, gain or loss for federal income tax purposes as a result of
such deposit and defeasance, and will be subject to federal income tax on the
same amount and in the same manner and at the same times as would have been the
case if such deposit and defeasance had not occurred.

     In the event the issuer exercises its option not to comply, or to discharge
the guarantor, if any, from compliance, with the covenants and certain other
provisions of an indenture with respect to a series of debt securities as
described in the immediately preceding paragraph, and that series of debt
securities are declared due and payable because of the occurrence of an Event of
Default that remains applicable, while the amount of money or U.S. Government
Obligations on deposit with the trustee will be sufficient to pay principal of
and interest on that series on the respective dates on which such amounts are
due, they may not be sufficient to pay amounts due on that series at the time of
the acceleration resulting from such Event of Default. However, the issuer and
the guarantor, if any, shall remain liable for such payments.

TERMINATION OF OBLIGATIONS IN CERTAIN CIRCUMSTANCES

     Unless otherwise provided in the applicable indenture and described in the
applicable prospectus supplement, the issuer may discharge the issuer and the
guarantor, if any, from any and all obligations in respect of a series of debt
securities and the provisions of the related indenture will no longer be in
effect with respect to that series of debt securities (except to the extent
provided under "-- Defeasance and Discharge") if that series of debt securities
mature within one year and the issuer deposits with the trustee, in trust, money
or U.S. Government Obligations that, through the payment of interest and
principal in respect thereof in accordance with their terms, will provide money
in an amount sufficient to pay the principal of, premium, if any, and accrued
interest on that series of debt securities when due in

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<PAGE>   37

accordance with the terms of that indenture and the debt securities. Such a
trust may only be established if, among other things,

     - no Default under the indenture with respect to that series shall have
       occurred and be continuing on the date of such deposit,

     - such deposit will not result in or constitute a Default or result in a
       breach or violation of, or constitute a Default under, any other
       agreement or instrument to which the issuer or the guarantor, if any, is
       a party or by which the issuer or the guarantor, if any, is bound and

     - the issuer has delivered to the trustee an opinion of counsel stating
       that such conditions have been complied with.

     Pursuant to this provision, the issuer is not required to deliver an
opinion of counsel to the effect that registered holders of that series will not
recognize income, gain or loss for U.S. federal income tax purposes as a result
of such deposit and termination, and there is no assurance that registered
holders of that series would not recognize income, gain or loss for U.S. federal
income tax purposes as a result thereof or that they would be subject to U.S.
federal income tax on the same amount and in the same manner and at the same
times as would have been the case if such deposit and termination had not
occurred.

UNCLAIMED MONEY

     Subject to any applicable abandoned property law, the indentures will
provide that the trustee will pay to the issuer upon request any money held by
the trustee for the payment of principal, premium, if any, or interest that
remains unclaimed for two years. After payment to the issuer, registered holders
of debt securities entitled to such money must look to the issuer for payment as
general creditors.

CONCERNING THE TRUSTEE AND PAYING AGENT

     Wilmington Trust Company will initially act as Trustee and paying agent for
the debt securities. Wilmington Trust Company currently acts as trustee under:

     - an indenture with Calpine and Calpine's subsidiary, Calpine Capital Trust
       III, dated as of August 9, 2000, and

     - an indenture with Calpine dated as of August 10, 2000.

     - an indenture with Energy Finance, dated as of April 25, 2001.

     A number of Calpine's series of debt securities are presently outstanding
under the first two indentures above and additional securities of those series
and additional series may be issued under the second indenture above. A series
of Energy Finance's debt securities, guaranteed by Calpine, is currently
outstanding under the third indenture above and additional debt securities of
that series and other series, each guaranteed by Calpine, may be offered under
that indenture. We may have in the future other relationships with Wilmington
Trust Company.

     We will describe in the prospectus supplement any material business and
other relationships (including additional trusteeships), other than the
trusteeship under the indentures, between us and any of our affiliates, on the
one hand, and each trustee and paying agent under the indentures, on the other
hand.

     The holders of a majority in principal amount of the outstanding senior
notes will have the right to direct the time, method and place of conducting any
proceeding for exercising any remedy available to the trustee, subject to
certain exceptions. If an event of default occurs (and is not cured), the
trustee will be required, in the exercise of its power, to use the degree of
care of a prudent man in the conduct of his own affairs. Subject to such
provisions, the trustee will be under no obligation to exercise any of its
rights or powers under the indenture at the request of any holder of senior
notes, unless such holder shall have offered to the trustee security and
indemnity satisfactory to the trustee against any loss, liability or expense and
then only to the extent required by the terms of the indenture.
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<PAGE>   38

     The registered office of the trustee is Rodney Square North, 1100 North
Market Street, Wilmington, Delaware.

GOVERNING LAW

     The laws of the State of New York will govern the indentures and each
series of debt securities.

BOOK-ENTRY SYSTEM

     Unless otherwise specified in the prospectus supplement, each series of
debt securities will be represented by one or more global notes registered in
the name of a nominee of The Depository Trust Company ("DTC"), as depositary.
Upon the issuance of the global notes, DTC or its custodian will credit, on its
internal system, the respective principal amount of the individual beneficial
interests represented by the global notes to the accounts of persons who have
accounts with DTC. Each account initially will be designated by or on behalf of
the underwriters, dealer or agents. Ownership of beneficial interests in a
global note will be limited to persons who have accounts with DTC
("participants") or persons who hold interests through participants. Ownership
of beneficial interests in the global notes will be shown on, and transfers of
their ownership may be effected only through, records maintained by DTC or its
nominee (with respect to interests of participants) and the records of
participants (with respect to interests of persons other than participants). DTC
currently limits the maximum denomination of any single global note to
$400,000,000.

     So long as DTC or its nominee is the registered owner or holder of the
global notes, DTC or such nominee, as the case may be, will be considered the
sole owner or holder of the debt securities represented by such global notes for
all purposes under the applicable indenture and the debt securities. No
beneficial owner of an interest in the global notes will be able to transfer
that interest except in accordance with DTC's applicable procedures, in addition
to those provided for under the indenture.

     Payments of the principal of, and interest on, the global notes will be
made to DTC or its nominee, as the case may be, as the registered owner of the
global notes. Neither we, the trustee or any paying agent will have any
responsibility or liability for any aspect of the records relating to or
payments made on account of beneficial ownership interests in the global notes
or for maintaining, supervising or reviewing any records relating to such
beneficial ownership interests.

     We expect that DTC or its nominee, upon receipt of any payment of principal
or interest in respect of the global notes will credit participants' accounts
with payments in amounts proportionate to their respective beneficial interests
in the principal amount of the global notes as shown on the records of DTC or
its nominee. We also expect that payments by participants to owners of
beneficial interests in the global notes held through such participants will be
governed by standing instructions and customary practices, as is now the case
with securities held for the accounts of customers registered in the names of
nominees for such customers. Such payments will be the responsibility of such
participants.

     Transfers between participants in DTC will be effected in the ordinary way
in accordance with DTC rules and will be settled in same-day funds. If a holder
requires physical delivery of a certificated note for any reason, including to
sell debt securities to persons in states which require delivery of certificated
notes or to pledge their debt securities, such holder must transfer its interest
in the global notes in accordance with the normal procedures of DTC and the
procedures set forth in the indenture.

     DTC has advised us that it will take any action permitted to be taken by a
holder of a series of debt securities (including the presentation of debt
securities for exchange as described below) only at the direction of one or more
participants to whose account the DTC interests in the global notes relating to
such series is credited and only in respect of such portion of the aggregate
principal amount of debt securities as to which such participant or participants
has or have given such direction. However, if there is an Event of Default under
a series of debt securities, DTC will exchange the global notes relating to such
series for certificated notes which it will distribute to its participants.

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<PAGE>   39

     DTC has advised us as follows: DTC is a limited purpose trust company
organized under the laws of the State of New York, a "banking organization"
within the meaning of New York Banking Law, a member of the Federal Reserve
System, a "clearing corporation" within the meaning of the Uniform Commercial
Code and a "Clearing Agency" registered pursuant to the provisions of Section
17A of the Securities Exchange Act. DTC was created to hold securities for its
participants and facilitate the clearance and settlement of securities
transactions between participants through electronic book-entry changes in
accounts of its participants, thereby eliminating the need for physical movement
of certificates. Participants include securities brokers and dealers, banks,
trust companies and clearing corporations and certain other organizations.
Indirect access to the DTC system is available to "indirect participants" such
as banks, brokers, dealers and trust companies that clear through or maintain a
custodial relationship with a participant, either directly or indirectly.

     Although DTC has agreed to the foregoing procedures in order to facilitate
transfers of interest in the global notes among participants of DTC, it is under
no obligation to perform or continue to perform such procedures, and such
procedures may be discontinued at any time. Neither we nor the trustee will have
any responsibility for the performance by DTC or its respective participants or
indirect participants of their respective obligations under the rules and
procedures governing their operations.

CERTIFICATED NOTES

     If DTC is at any time unwilling or unable to continue as a depositary for
the global notes and a successor depositary is not appointed by us within 90
days, or if the issuer otherwise chooses to issue definitive debt securities,
the issuer will issue certificated notes in exchange for the global notes. In
either instance, an owner of a beneficial interest in a global note will be
entitled to have debt securities equal in principal amount to such beneficial
interest registered in its name and will be entitled to physical delivery of
debt securities in definitive form. Debt securities in definitive form will be
issued in denominations of $1,000 and integral multiples of $1,000 and will be
issued in registered form only, without coupons. The issuer will maintain in the
Borough of Manhattan, The City of New York, one or more offices or agencies
where debt securities may be presented for payment and may be transferred or
exchanged. You will not be charged a fee for any transfer or exchange of your
debt securities, but the issuer may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.

SAME-DAY SETTLEMENT IN RESPECT OF GLOBAL NOTES

     Global notes held by DTC will trade in DTC's Same-Day Funds Settlement
System until maturity and secondary market trading activity in the debt
securities will settle in immediately available funds. No assurance can be given
as to the effect, if any, of settlement in immediately available funds on the
trading activity in the debt securities.

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<PAGE>   40

             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

     The following is a summary of the material United States federal income tax
consequences of the ownership and disposition of the securities. Unless
otherwise stated, this summary deals only with securities held as capital assets
by U.S. holders. As used herein, "U.S. holders" are any beneficial owners of the
securities, that are, for United States federal income tax purposes, (1)
citizens or residents of the United States, (2) corporations created or
organized in, or under the laws of, the United States, any state thereof or the
District of Columbia, (3) estates, the income of which is subject to United
States federal income taxation regardless of its source, or (4) trusts if (A) a
court within the United States is able to exercise primary supervision over the
administration of the trust and (B) one or more United States persons have the
authority to control all substantial decisions of the trust. In addition,
certain trusts in existence on August 20, 1996 and treated as a U.S. holder
prior to such date may also be treated as U.S. holders. As used herein,
"non-U.S. holders" are beneficial owners of the securities, other than
partnerships, that are not U.S. holders for United States federal income tax
purposes. If a partnership (including for this purpose any entity treated as a
partnership for United States federal tax purposes) is a beneficial owner of the
securities, the treatment of a partner in the partnership will generally depend
upon the status of the partner and upon the activities of the partnership.
Partnerships and partners in such partnerships should consult their tax advisers
about the United States federal income tax consequences of owning and disposing
of the securities. This summary does not deal with special classes of holders
such as banks, thrifts, real estate investment trusts, regulated investment
companies, insurance companies, dealers in securities or currencies, or
tax-exempt investors and does not discuss securities held as part of a hedge,
straddle, "synthetic security" or other integrated transaction. This summary
also does not address the tax consequences to persons that have a functional
currency other than the U.S. dollar, U.S. holders who are resident or who carry
on a trade or business in Canada, or the tax consequences to shareholders,
partners or beneficiaries of a holder of the securities. Further, it does not
include any description of any alternative minimum tax consequences or the tax
laws of any state or local government or of any foreign government that may be
applicable to the securities. This summary is based on the Internal Revenue Code
of 1986, as amended, the Treasury regulations promulgated thereunder and
administrative and judicial interpretations thereof, all as of the date hereof,
and all of which are subject to change, possibly on a retroactive basis.

     You should consult with your own tax advisor regarding the federal, state,
local and foreign income, franchise, personal property, and any other tax
consequences of the ownership and disposition of the securities.

TAXATION OF COMMON STOCK OF CALPINE

     This subsection describes the material United States federal income tax
consequences of owning and disposing of the common stock that Calpine may offer.

U.S. HOLDERS OF COMMON STOCK

Dividends

     The amount of any distribution Calpine makes in respect of its common stock
will be equal to the amount of cash and the fair market value, on the date of
distribution, of any property distributed. Generally, distributions will be
treated as a dividend, subject to tax as ordinary income, to the extent of
Calpine's current or accumulated earnings and profits, then as a tax-free return
of capital to the extent of a holder's tax basis in the common stock and
thereafter as gain from the sale or exchange of such stock as described below.

     In general, a dividend distribution to a corporate holder will qualify for
the 70% dividends-received deduction. The dividends received deduction is
subject to certain holding period, taxable income, and other limitations (see
"Taxation of Preferred Stock -- U.S. Holders of Preferred Stock -- Dividends to
Corporate Holders", below).

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<PAGE>   41

Sale or Exchange of Common Stock

     Upon the sale or exchange of common stock, a holder generally will
recognize capital gain or loss equal to the difference between (1) the amount of
cash and the fair market value of any property received upon the sale or
exchange and (2) such holder's adjusted tax basis in the common stock. In the
case of a holder other than a corporation, preferential tax rates may apply to
such gain if the holder's holding period for the common stock exceeds one year.
A holder's basis in the common stock is generally equal to its initial purchase
price.

Information Reporting and Backup Withholding Tax

     In general, information reporting requirements will apply to payments of
dividends on common stock and payments of the proceeds of the sale of common
stock, and a backup withholding tax (currently 30.5%) may apply to such payments
if the holder fails to comply with certain identification requirements. Any
amounts withheld under the backup withholding rules from a payment to a holder
will be allowed as a credit against such holder's United States federal income
tax and may entitle the holder to a refund, provided that the required
information is furnished to the Internal Revenue Service.

NON-U.S. HOLDERS OF COMMON STOCK

     The rules governing United States federal income taxation of a non-U.S.
holder of common stock are complex and no attempt will be made herein to provide
more than a summary of such rules. Non-U.S. holders should consult with their
own tax advisors to determine the effect of federal, state, local and foreign
income tax laws, as well as treaties, with regard to an investment in the common
stock, including any reporting requirements.

Dividends

     Distributions by Calpine with respect to the common stock that are treated
as dividends paid, as described above under "Dividends," to a non-U.S. holder
(excluding dividends that are effectively connected with the conduct of a United
States trade or business by such holder and are taxable as described below) will
be subject to United States federal withholding tax at a 30% rate (or a lower
rate provided under an applicable income tax treaty). Except to the extent that
an applicable income tax treaty otherwise provides, a non-U.S. holder will be
taxed in the same manner as a U.S. holder on dividends paid (or deemed paid)
that are effectively connected with the conduct of a United States trade or
business by the non-U.S. holder. If such non-U.S. holder is a foreign
corporation, it may also be subject to a United States branch profits tax on
such effectively connected income at a 30% rate (or such lower rate as may be
specified by an applicable income tax treaty). Even though such effectively
connected dividends are subject to income tax and may be subject to the branch
profits tax, they will not be subject to United States federal withholding tax
if the holder delivers a properly executed Internal Revenue Service Form W-8ECI
(or successor form) to the payor.

     A non-U.S. holder who wishes to claim the benefit of an applicable treaty
is required to satisfy certain certification and other requirements. If you are
eligible for a reduced rate of United States withholding tax pursuant to an
income tax treaty, you may obtain a refund of any excess amounts withheld by
filing an appropriate claim for refund with the Internal Revenue Service.

Sale or Exchange of Common Stock

     A non-U.S. holder generally will not be subject to United States federal
income tax or withholding tax on the sale or exchange of common stock unless (1)
the gain is effectively connected with a United States trade or business of the
non-U.S. holder, (2) in the case of a non-U.S. holder who is an individual, such
holder is present in the United States for a period or periods aggregating 183
days or more during the taxable year of the disposition, and either (A) such
holder has a "tax home" in the United States or (B) the disposition is
attributable to an office or other fixed place of business maintained by such
holder in the United States, (3) the non-U.S. holder is subject to tax pursuant
to the provisions of the Internal
                                        37
<PAGE>   42

Revenue Code applicable to certain United States expatriates or (4) in the event
that Calpine is characterized as a United States real property holding
corporation and the non-U.S. holder does not qualify for certain exemptions (see
discussion below under "Foreign Investment in Real Property Tax Act").

     If an individual non-U.S. holder falls under clause (1) above, such
individual generally will be taxed on the net gain derived from a sale in the
same manner as a holder who is a United States person. If an individual non-U.S.
holder falls under clause (2) above, such individual generally will be subject
to a flat 30% tax on the gain derived from a sale, which may be offset by
certain United States capital losses (notwithstanding the fact that such
individual is not considered a resident of the United States). Individual
non-U.S. holders who have spent (or expect to spend) 183 days or more in the
United States in the taxable year in which they contemplate a sale of common
stock are urged to consult their tax advisors as to the tax consequences of such
sale. If a non-U.S. holder that is a foreign corporation falls under clause (1),
it generally will be taxed on the net gain derived from a sale in the same
manner as a holder who is a United States person and, in addition, may be
subject to the branch profits tax on such effectively connected income at a 30%
rate (or such lower rate as may be specified by an applicable income tax
treaty).

Information Reporting and Backup Withholding Tax

     United States information reporting requirements and backup withholding tax
will not apply to any payment of the proceeds of the sale of common stock
effected outside the United States by a foreign office of a "broker" as defined
in applicable Treasury regulations, unless such broker (1) is a United States
person as defined in the Internal Revenue Code, (2) is a foreign person that
derives 50% or more of its gross income for certain periods from the conduct of
a trade or business in the United States, (3) is a controlled foreign
corporation for United States federal income tax purposes or (4) is a foreign
partnership with certain U.S. connections. Payment of the proceeds of any such
sale effected outside the United States by a foreign office of any broker that
is described in the preceding sentence may be subject to backup withholding tax
and information reporting requirements, unless such broker has documentary
evidence in its records that the beneficial owner is a non-U.S. holder and
certain other conditions are met, or the beneficial owner otherwise establishes
an exemption. Dividends on common stock held by a non-U.S. holder will be
subject to information reporting and may be subject to backup withholding
requirements unless certain certification requirements are satisfied.

Foreign Investment in Real Property Tax Act

     Under the Foreign Investment in Real Property Tax Act, any person who
acquires a "United States real property interest" (as described below) from a
foreign person must deduct and withhold a tax equal to 10% of the amount
realized by the foreign transferor. In addition, a foreign person who disposes
of a United States real property interest generally is required to recognize
gain or loss that is subject to United States federal income tax. A "United
States real property interest" generally includes any interest (other than an
interest solely as a creditor) in a United States corporation unless it is
established under specified procedures that the corporation is not (and was not
for the prior five-year period) a "United States real property holding
corporation." We believe it is likely that we are a United States real property
holding corporation and we can give no assurance that we will not continue to be
a United States real property holding corporation in the future. However, so
long as our stock is regularly traded on an established securities market, an
exemption applies with respect to any non-U.S. holder whose beneficial and/or
constructive ownership of common stock is 5% or less of the total fair market
value of the common stock.

     Any investor that may approach or exceed the 5% ownership threshold
discussed above, either alone or in conjunction with related persons, should
consult its own tax advisor concerning the United States tax consequences that
may result. A non-U.S. holder who sells or otherwise disposes of common stock
may be required to inform its transferee whether such common stock constitutes a
United States real property interest.

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<PAGE>   43

     THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED
FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A HOLDER'S
PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO
THE TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF COMMON STOCK,
INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN AND OTHER TAX LAWS
AND THE POSSIBLE EFFECTS OF CHANGES IN UNITED STATES FEDERAL OR OTHER TAX LAWS.

TAXATION OF PREFERRED STOCK OF CALPINE

     This subsection describes the material United States federal income tax
consequences of owning and disposing of the preferred stock that Calpine may
offer.

U.S. HOLDERS OF PREFERRED STOCK

Dividends

     The amount of any distribution Calpine makes in respect of its preferred
stock will be equal to the amount of cash and the fair market value, on the date
of distribution, of any property (including common stock) distributed.
Generally, distributions will be treated as a dividend, subject to tax as
ordinary income, to the extent of Calpine's current or accumulated earnings and
profits, then as a tax-free return of capital to the extent of a holder's tax
basis in the preferred stock and thereafter as gain from the sale or exchange of
such stock as described below.

Dividends to Corporate Holders

     A dividend distribution to a corporate holder will generally qualify for
the 70% dividends received deduction. In determining entitlement to the
dividends received deduction, corporate holders should also consider the
provisions of Sections 246(c), 246A and 1059 of the Internal Revenue Code, as
well as Treasury regulations and Internal Revenue Service rulings and
administrative pronouncements relating to such provisions. Under current law,
Section 246(c) of the Internal Revenue Code disallows the dividends received
deduction in its entirety if the holder does not satisfy the applicable holding
period requirement for the dividend-paying stock for a period beginning before
and ending after such holder becomes entitled to receive each dividend on the
stock. Section 246(c)(4) of the Internal Revenue Code provides that a holder may
not count toward this minimum holding period any period in which the holder (1)
has an option to sell, is under a contractual obligation to sell, or has made
(and not closed) a short sale of, substantially identical stock or securities,
or (2) has diminished its risk of loss by holding one or more positions with
respect to substantially similar or related property. Under certain
circumstances, Section 1059 of the Internal Revenue Code (A) reduces the tax
basis of stock by a portion of any "extraordinary dividends" that are eligible
for the dividends received deduction and (B) to the extent that the basis
reduction would otherwise reduce the tax basis of the stock below zero, requires
immediate recognition of gain, which is treated as gain from the sale or
exchange of the stock. An "extraordinary dividend" includes any amount treated
as a dividend with respect to a redemption that is not pro rata to all
stockholders (or meets certain other requirements), without regard to either the
relative amount of the dividend or the holder's holding period for the stock.
Section 246A of the Internal Revenue Code contains the "debt-financed" portfolio
stock rules, under which the dividends received deduction could be reduced to
the extent that a holder incurs indebtedness directly attributable to its
investment in the stock.

Receipt of Common Stock Upon Conversion of the Preferred Stock

     If the preferred stock is convertible into common stock of Calpine, gain or
loss will not be recognized by a holder upon the conversion of such preferred
stock into common stock if no cash is received. A holder who receives cash in
lieu of a fractional share of common stock will in general be treated as having
received such fractional share and having exchanged it for cash in a redemption,
which would be treated in the manner described under "Sale, Exchange or
Redemption of Preferred Stock" below. As discussed therein, a holder who cannot
qualify for sale or exchange treatment under the rules applicable to

                                        39
<PAGE>   44

redemptions will generally be taxable on the cash received in lieu of a
fractional share as a distribution described in "Dividends" above.

     A holder's tax basis in the common stock received upon conversion will
generally be equal to the holder's tax basis in the preferred stock less the tax
basis allocated to any fractional share for which cash is received, and a
holder's holding period in the common stock received upon conversion generally
will include the period during which the preferred stock was held by such
holder.

Adjustments of Conversion Price in Respect of Preferred Stock

     If the preferred stock is convertible into common stock of Calpine,
adjustments to the conversion price ratio of common stock to take into account a
stock dividend or stock split generally will not be taxable. However, an
adjustment to the conversion price ratio to reflect the issuance of certain
rights, warrants, evidences of indebtedness, securities or other assets to
holders of common stock (an "Adjustment") may result in constructive
distributions to the holders of the preferred stock. The amount of any such
constructive distribution would be the fair market value on the date of the
Adjustment of the number of shares of common stock which, if actually
distributed to holders of preferred stock, would produce the same increase in
the proportionate interests of such holders in the assets or earnings and
profits of Calpine as that produced by the Adjustment. The distribution would be
treated in the manner described above under "Dividends."

Excessive Redemption Price of Preferred Stock

     Under Section 305 of the Internal Revenue Code and Treasury regulations, if
preferred stock with a mandatory redemption date or preferred stock subject to
certain redemption rights on the part of either Calpine or the holder of such
stock has a redemption price that exceeds its issue price (i.e., its fair market
value at its date of original issuance) by more than a de minimis amount, such
excess may be treated as a constructive distribution that will be treated in the
same manner as distribution described above under "Dividends." A holder of such
preferred stock would be required to treat such excess as a constructive
distribution received by the holder over the life of such stock under a constant
interest (economic yield) method that takes into account the compounding of
yield.

Accrued Dividends on the Preferred Stock

     The tax treatment of accrued dividends that are payable upon a redemption
of the preferred stock will be addressed in the applicable prospectus
supplement.

Sale, Exchange or Redemption of Preferred Stock

     Upon the sale or exchange of preferred stock, a holder generally will
recognize capital gain or loss equal to the difference between (1) the amount of
cash and the fair market value of any property received upon the sale or
exchange and (2) such holder's adjusted tax basis in the stock. In the case of a
holder other than a corporation, preferential tax rates may apply to such gain
if the holder's holding period for the preferred stock exceeds one year. A
holder's basis in the preferred stock is generally equal to its initial purchase
price.

     Gain or loss recognized by a holder on a redemption of the preferred stock
will be treated as a sale or exchange and therefore qualify for the treatment
described above if certain requirements are satisfied. Generally, these
requirements are satisfied if either (1) the holder's interest in the stock of
Calpine is completely terminated as a result of such redemption, (2) such
holder's percentage ownership of Calpine's voting stock immediately after the
redemption is less than 80% of such holder's percentage ownership immediately
before the redemption or (3) the redemption is "not essentially equivalent to a
dividend." Under Section 318 of the Internal Revenue Code, a person generally
will be treated as the owner of stock of Calpine owned by certain related
parties or certain entities in which the person owns an interest and stock that
a holder could acquire through exercise of an option. For this purpose, an
option would include the conversion right under the preferred stock. Whether a
redemption is "not essentially equivalent" to a
                                        40
<PAGE>   45

dividend depends on each holder's facts and circumstances, but in any event
requires a "meaningful reduction" in such holder's equity interest in Calpine. A
holder of the preferred stock who sells some or all of the stock of Calpine
owned by it may be able to take such sales into account to satisfy one of the
foregoing conditions. Conversely, a holder who purchases additional shares of
stock of Calpine may be required to take such shares into account in determining
whether any of the foregoing conditions are satisfied.

     If none of the above requirements for sale or exchange treatment is
satisfied, the entire amount of the cash (or property) received on a redemption
will generally be treated in the same manner as distributions described above
under "Dividends." In such case, the holder's basis in the redeemed preferred
stock would be transferred to the holder's remaining shares of Calpine stock (if
any). If the holder does not retain any shares of Calpine's stock but dividend
treatment arises because of the constructive ownership rules, such basis may be
entirely lost to the holder.

Other Preferred Stock

     Special tax rules may apply to certain types of preferred stock. The
applicable prospectus supplement will discuss any such special United States
federal income tax rules with respect to such preferred stock.

Information Reporting and Backup Withholding Tax

     In general, information reporting requirements will apply to payments of
dividends on the preferred stock and payments of the proceeds of the sale of the
preferred stock, and a backup withholding tax (currently 30.5%) may apply to
such payments if the holder fails to comply with certain identification
requirements. Any amounts withheld under the backup withholding rules from a
payment to a holder will be allowed as a credit against such holder's United
States federal income tax and may entitle the holder to a refund, provided that
the required information is furnished to the Internal Revenue Service.

NON-U.S. HOLDERS OF PREFERRED STOCK

     The rules governing United States federal income taxation of a non-U.S.
holder of preferred stock are complex and no attempt will be made herein to
provide more than a summary of such rules. Non-U.S. holders should consult with
their own tax advisors to determine the effect of federal, state, local and
foreign income tax laws, as well as treaties, with regard to an investment in
the preferred stock, including any reporting requirements.

Dividends

     Distributions by Calpine with respect to the preferred stock that are
treated as dividends paid (or deemed paid), as described above under "Dividends"
and "Sale, Exchange or Redemption of Preferred Stock," to a non-U.S. holder
(excluding dividends that are effectively connected with the conduct of a United
States trade or business by such holder and are taxable as described below) will
be subject to United States federal withholding tax at a 30% rate (or a lower
rate provided under an applicable income tax treaty). Except to the extent that
an applicable income tax treaty otherwise provides, a non-U.S. holder will be
taxed in the same manner as a holder who is a United States person on dividends
paid (or deemed paid) that are effectively connected with the conduct of a
United States trade or business by the non-U.S. holder. If such non-U.S. holder
is a foreign corporation, it may also be subject to a United States branch
profits tax on such effectively connected income at a 30% rate (or such lower
rate as may be specified by an applicable income tax treaty). Even though such
effectively connected dividends are subject to income tax, and may be subject to
the branch profits tax, they will not be subject to United States withholding
tax if the holder delivers a properly executed Internal Revenue Service Form
W-8ECI (or successor form) to the payor.

     A non-U.S. holder who wishes to claim the benefit of an applicable treaty
is required to satisfy certain certification and other requirements. If you are
eligible for a reduced rate of United States withholding tax

                                        41
<PAGE>   46

pursuant to an income tax treaty, you may obtain a refund of any excess amounts
withheld by filing an appropriate claim for refund with the Internal Revenue
Service.

Receipt of Common Stock Upon Conversion of the Preferred Stock

     In general, no United States federal income tax or withholding tax will be
imposed upon the conversion of preferred stock into common stock by a non-U.S.
holder (except with respect to the non-U.S. holder's receipt of cash in lieu of
fractional shares where one of the conditions described below under "Sale,
Exchange or Redemption of Preferred Stock" is satisfied).

Sale, Exchange or Redemption of Preferred Stock

     A non-U.S. holder generally will not be subject to United States federal
income tax or withholding tax on the sale or exchange of preferred stock unless
(1) the gain is effectively connected with a United States trade or business of
the non-U.S. holder, (2) in the case of a non-U.S. holder who is an individual,
such holder is present in the United States for a period or periods aggregating
183 days or more during the taxable year of the disposition, and either (A) such
holder has a "tax home" in the United States or (B) the disposition is
attributable to an office or other fixed place of business maintained by such
holder in the United States, (3) the non-U.S. holder is subject to tax pursuant
to the provisions of the Internal Revenue Code applicable to certain United
States expatriates or (4) in the event that Calpine is characterized as a United
States real property holding corporation and the non-U.S. holder does not
qualify for certain exemptions (see discussion below under "Foreign Investment
in Real Property Tax Act").

     If an individual non-U.S. holder falls under clause (1) above, such
individual generally will be taxed on the net gain derived from a sale in the
same manner as a holder who is a United States person. If an individual non-U.S.
holder falls under clause (2) above, such individual generally will be subject
to a flat 30% tax on the gain derived from a sale, which may be offset by
certain United States capital losses (notwithstanding the fact that such
individual is not considered a resident of the United States). Individual
non-U.S. holders who have spent (or expect to spend) 183 days or more in the
United States in the taxable year in which they contemplate a sale of preferred
stock are urged to consult their tax advisors as to the tax consequences of such
sale.

     If a non-U.S. holder that is a foreign corporation falls under clause (1)
of the first sentence above, it generally will be taxed on the net gain derived
from a sale in the same manner as a holder who is a United States person and, in
addition, may be subject to the branch profits tax on such effectively connected
income at a 30% rate (or such lower rate as may be specified by an applicable
income tax treaty).

     Gain or loss realized by a non-U.S. holder on a redemption of the preferred
stock will be treated as a sale or exchange and qualify for the treatment
described in this section if certain requirements are satisfied. For a
description of these requirements, see "U.S. Holders -- Sale, Exchange or
Redemption of Preferred Stock," above.

Information Reporting and Backup Withholding Tax

     United States information reporting requirements and backup withholding tax
will not apply to any payment of the proceeds of the sale of preferred stock
effected outside the United States by a foreign office of a "broker" as defined
in applicable Treasury regulations, unless such broker (1) is a United States
person as defined in the Internal Revenue Code, (2) is a foreign person that
derives 50% or more of its gross income for certain periods from the conduct of
a trade or business in the United States, (3) is a controlled foreign
corporation for United States federal income tax purposes or (4) is a foreign
partnership with certain U.S. connections. Payment of the proceeds of any such
sale effected outside the United States by a foreign office of any broker that
is described in the preceding sentence may be subject to backup withholding tax
and information reporting requirements, unless such broker has documentary
evidence in its records that the beneficial owner is a non-U.S. holder and
certain other conditions are met, or the
                                        42
<PAGE>   47

beneficial owner otherwise establishes an exemption. Dividends on preferred
stock held by a non-U.S. holder will be subject to information reporting and may
be subject to backup withholding requirements unless certain certification
requirements are satisfied.

Foreign Investment in Real Property Tax Act

     Under the Foreign Investment in Real Property Tax Act, any person who
acquires a "United States real property interest" (as described below) from a
foreign person must deduct and withhold a tax equal to 10% of the amount
realized by the foreign transferor. In addition, a foreign person who disposes
of a United States real property interest generally is required to recognize
gain or loss that is subject to United States federal income tax. A "United
States real property interest" generally includes any interest (other than an
interest solely as a creditor) in a United States corporation unless it is
established under specified procedures that the corporation is not (and was not
for the prior five-year period) a "United States real property holding
corporation." We believe it is likely that we are a United States real property
holding corporation and we can give no assurance that we will not continue to be
a United States real property holding corporation in the future. However, so
long as the preferred stock is regularly traded on an established securities
market, an exemption applies with respect to any non-U.S. holder whose
beneficial and/or constructive ownership of preferred stock is 5% or less of the
total fair market value of the preferred stock. In addition, if the preferred
stock is to be regularly traded on an established securities market, but our
common stock continues to be so regularly traded, an exemption will apply if the
fair market value of the non-U.S. holder's interest in the preferred stock is 5%
or less of the total fair market value of the common stock.

     Any investor that may approach or exceed the 5% ownership threshold
discussed above, either alone or in conjunction with related persons, should
consult its own tax advisor concerning the United States tax consequences that
may result. A non-U.S. holder who sells or otherwise disposes of preferred stock
may be required to inform its transferee whether such preferred stock
constitutes a United States real property interest.

     THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED
FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A HOLDER'S
PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO
THE TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF THE PREFERRED
STOCK, INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN AND OTHER TAX
LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN UNITED STATES FEDERAL OR OTHER TAX
LAWS.

TAXATION OF DEBT SECURITIES OF CALPINE AND ENERGY FINANCE

     This subsection describes the material United States federal income tax
consequences of owning and disposing of the debt securities offered by Calpine
or Energy Finance, as the case may be. It deals only with debt securities that
are due to mature 30 years or less from the date on which they are issued. The
United States federal income tax consequences of owning and disposing of debt
securities that are due to mature more than 30 years from the date of issue will
be discussed in an applicable prospectus supplement. The discussion regarding
U.S. income tax laws, including the statements regarding the U.S.-Canada double
taxation convention relating to income and capital gains (the "Tax Treaty"),
assumes that any debt securities will be issued, and transfers thereof and
payments thereon will be made, in accordance with the applicable indenture and
deposit agreement.

U.S. HOLDERS OF DEBT SECURITIES

Interest Income

     Subject to the original issue discount rules described below, payments of
interest on the debt securities (including, in the case of debt securities
issued by Energy Finance, the amount of Canadian tax withheld, if any) generally
will be taxable to a U.S. holder as ordinary interest income at the time such
payments are accrued or received (in accordance with the holder's regular method
of tax accounting).

                                        43
<PAGE>   48

     A debt security will be treated as issued with original issue discount
("OID") if its stated redemption price at maturity exceeds its issue price by
more than a de minimis amount. Generally, the issue price will be the first
price at which a substantial amount of the debt securities is sold to persons
other than bond houses, brokers or similar persons or organizations acting in
the capacity of underwriters, placement agents or wholesalers. A debt security's
stated redemption price at maturity is the total of all payments on the debt
security that are not payments of qualified stated interest. An interest payment
is qualified stated interest if it is one of a series of stated interest
payments that are unconditionally payable at least annually at a single fixed
rate.

     A debt security is not treated as issued with OID if the OID, i.e., if the
excess of the stated redemption price at maturity of a debt security over its
issue price, is de minimis. For this purpose the amount of OID is de minimis if
it does not exceed the product of 0.25 percent of the stated redemption price at
maturity multiplied by the number of complete years to maturity. If the debt
security has de minimis OID, a holder must generally include the de minimis
amount in income (as capital gain) when stated principal payments are made.

     If the debt securities are treated as issued with OID, a U.S. holder will
be required to include the amount of the OID in income periodically over the
term of the debt security before receipt of the cash or other payment
attributable to such income and irrespective of such holder's general method of
tax accounting. In particular, a U.S. holder of a debt security must include in
gross income, as interest for United States federal income tax purposes, the sum
of the daily portions of OID with respect to the debt security for each day
during the taxable year or portion of a taxable year in which such holder holds
the debt security ("accrued OID"). The daily portion is determined by allocating
to each day of an accrual period a pro rata portion of an amount equal to the
adjusted issue price of the debt security at the beginning of the accrual period
multiplied by the yield to maturity of the debt security and subtracting from
this product the amount of qualified stated interest allocable to the accrual
period. The adjusted issue price of the debt security at the start of any
accrual period is the issue price of the debt security increased by the accrued
OID for each prior accrual period and decreased by the amount of any payments
previously made with respect to the debt security (other than qualified stated
interest).

Source of Income and Foreign Tax Credits With Respect to Debt Securities of
Energy Finance

     If Canadian withholding taxes are imposed on payments on the debt
securities issued by Energy Finance, the eligibility of a U.S. holder for a
United States foreign tax credit with respect to such taxes may be limited if
such U.S. holder is not entitled to benefits under the Tax Treaty because, for
United States foreign tax credit purposes, such payments would constitute income
from sources within the United States. U.S. holders that are entitled to
benefits under the Tax Treaty may, subject to certain limitations, treat the
payments as foreign source income. Interest on the debt securities will
generally constitute "passive income" for United States foreign tax credit
purposes. Moreover, if such Canadian withholding taxes are imposed on interest
payments at a rate that equals or exceeds 5%, such interest income would
constitute "high withholding tax interest" for United States foreign tax credit
purposes. A U.S. holder that does not claim a foreign tax credit may be entitled
to a deduction for United States federal income tax purposes with respect to any
such Canadian withholding taxes. The calculation of foreign tax credits or
deductions involves the application of complex rules that depend on a holder's
particular circumstances. Accordingly, U.S. holders are urged to consult their
tax advisors regarding the creditability or deductibility of such taxes. For a
discussion of the Canadian income tax considerations, see "Certain Canadian
Federal Income Tax Considerations."

Debt Securities Purchased at a Market Discount

     A holder will be considered to have purchased a debt security at a "market
discount" if the holder's adjusted basis in the debt security is less than its
stated redemption price at maturity, or in the case of a debt security issued at
a discount, its adjusted issue price, unless such market discount is a de
minimis amount (generally up to 1/4 of 1 percent of the stated redemption price
or adjusted issue price, as the case may be, on the purchase date multiplied by
its weighted average maturity as of such date). In general, any
                                        44
<PAGE>   49

partial payment of principal on, or gain recognized on the maturity or
disposition of, the debt security will be treated as ordinary income to the
extent that such gain does not exceed the accrued market discount on the
underlying debenture. Alternatively, a holder of a debt security may elect to
include market discount in income currently over the life of the debt security.
Such an election applies to all debt instruments with market discount acquired
by the electing holder on or after the first day of the first taxable year to
which the election applies and may not be revoked without the consent of the
Internal Revenue Service.

     Market discount accrues on a straight-line basis unless the holder elects
to accrue such discount on a constant yield to maturity basis. Such an election
is applicable only to the debt security with respect to which it is made and is
irrevocable. A holder of a debt security that does not elect to include market
discount in income currently generally will be required to defer deductions for
interest on borrowings allocable to such debt security in an amount not
exceeding the accrued market discount on such debt security until the maturity
or disposition of such debt security.

Debt Securities Purchased at a Premium

     A holder will be considered to have purchased a debt security at a premium
if the holder's adjusted basis in the debt security immediately after the
purchase is greater than the stated redemption price at maturity of the debt
security. A holder may elect to treat such premium as "amortizable bond
premium," in which case the amount of interest required to be included in the
holder's income each year with respect to the interest on the debt security will
be reduced by the amount of the amortizable bond premium allocable (based on the
debt security's yield to maturity) to such year. Any election to amortize bond
premium is applicable to all bonds (other than bonds the interest on which is
excludible from gross income) held by the holder at the beginning of the first
taxable year to which the election applies or thereafter acquired by the holder,
and may not be revoked without the consent of the Internal Revenue Service.

Sale or Exchange of Debt Securities

     A holder will generally recognize taxable gain or loss equal to the
difference between the amount realized on the sale, exchange or other
disposition of the debt security and the holder's adjusted tax basis in such
debt security (subject to the discussion above regarding market discount, which
may be treated as ordinary income). A holder's adjusted tax basis in the debt
security generally will be the initial purchase price paid therefore, increased
by any OID or market discount previously included in income with respect to the
debt security and reduced by any amortizable bond premium. In the case of a
holder other than a corporation, preferential tax rates may apply to gain
recognized on the sale of a debt security if such holder's holding period for
such debt security exceeds one year.

     To the extent the selling price is less than the holder's adjusted tax
basis, the holder will recognize a capital loss. Subject to certain limited
exceptions, capital losses cannot be applied to offset ordinary income for
United States federal income tax purposes.

Other Debt Securities

     Special tax rules may apply to certain types of debt securities including,
but not limited to, debt securities subject to contingencies, variable rate debt
securities and debt securities convertible into equity of Calpine. The
applicable prospectus supplement will discuss any such special United States
federal income tax rules with respect to such debt securities.

Information Reporting and Backup Withholding Tax

     In general, information reporting requirements will apply to payments of
principal, premium, if any, and interest on the debt securities and payments of
the proceeds of the sale of the debt securities, and a backup withholding tax
(currently 30.5%) may apply to such payments if the holder fails to comply with
certain identification requirements. Any amounts withheld under the backup
withholding rules from a payment to a holder will be allowed as a credit against
such holder's United States federal income tax and
                                        45
<PAGE>   50

may entitle the holder to a refund, provided that the required information is
furnished to the Internal Revenue Service.

NON-U.S. HOLDERS OF DEBT SECURITIES

     The rules governing United States federal income taxation of a non-U.S.
holder of debt securities are complex and no attempt will be made herein to
provide more than a summary of such rules. Non-U.S. holders should consult with
their own tax advisors to determine the effect of federal, state, local and
foreign income tax laws, as well as treaties, with regard to an investment in
the debt securities, including any reporting requirements.

     This discussion assumes that the debt security or coupon is not subject to
the rules of Section 871(h)(4)(A) of the Internal Revenue Code, relating to
interest payments that are determined by reference to income, profits, changes
in value of property or other attributes of the issuer or a related party.

Interest Income

     Generally, interest income of a non-U.S. holder that is not effectively
connected with a United States trade or business will be subject to a
withholding tax at a 30% rate (or, if applicable, a lower tax rate specified by
a treaty). However, interest income earned on a debt security by a non-U.S.
holder will qualify for the "portfolio interest" exemption and therefore will
not be subject to United States federal income tax or withholding tax, provided
that such interest income is not effectively connected with a United States
trade or business of the non-U.S. holder and provided that (1) the non-U.S.
holder does not actually or constructively own 10% of more of the total combined
voting power of all classes of Calpine stock entitled to vote; (2) the non-U.S.
holder is not a controlled foreign corporation that is related to the issuer or
Calpine through stock ownership; (3) the non-U.S. holder is not a bank which
acquired the debt security in consideration for an extension of credit made
pursuant to a loan agreement entered into in the ordinary course of business;
and (4) either (A) the non-U.S. holder certifies to the issuer or the issuer's
agent, under penalties of perjury, that it is not a United States person and
provides its name, address, and certain other information on a properly executed
Internal Revenue Service Form W-8BEN or a suitable substitute form or (B) a
securities clearing organization, bank or other financial institution that holds
customer securities in the ordinary course of its trade or business and holds
the debt securities in such capacity, certifies to the issuer or the issuer's
agent, under penalties of perjury, that such a statement has been received from
the beneficial owner by it or by a financial institution between it and the
beneficial owner and furnishes the issuer or the issuer's agent with a copy
thereof. The applicable United States Treasury regulations also provide
alternative methods for satisfying the certification requirements of clause (4),
above. If a non-U.S. holder holds the debt security through certain foreign
intermediaries or partnerships, such holder and the foreign intermediary or
partnership may be required to satisfy certification requirements under
applicable United States Treasury regulations.

     Except to the extent that an applicable treaty otherwise provides, a
non-U.S. holder generally will be taxed with respect to interest in the same
manner as a holder that is a United States person if the interest is effectively
connected with a United States trade or business of the non-U.S. holder.
Effectively connected interest income received or accrued by a corporate
non-U.S. holder may also, under certain circumstances, be subject to an
additional "branch profits" tax at a 30% rate (or, if applicable, at a lower tax
rate specified by an applicable income tax treaty). Even though such effectively
connected income is subject to income tax, and may be subject to the branch
profits tax, it is not subject to withholding tax if the non-U.S. holder
delivers a properly executed Internal Revenue Service Form W-8ECI (or successor
form) to the payor.

Sale or Exchange of Debt Securities

     A non-U.S. holder generally will not be subject to United States federal
income tax or withholding tax on any gain realized on the sale, exchange or
other disposition of a debt security unless (1) the gain is effectively
connected with a United States trade or business of the non-U.S. holder, (2) in
the case of a

                                        46
<PAGE>   51

non-U.S. holder who is an individual, such holder is present in the United
States for a period or periods aggregating 183 days or more during the taxable
year of the disposition, and either such holder has a "tax home" in the United
States or the disposition is attributable to an office or other fixed place of
business maintained by such holder in the United States, or (3) the non-U.S.
holder is subject to tax pursuant to the provisions of the Internal Revenue Code
applicable to certain United States expatriates.

Information Reporting and Backup Withholding Tax

     United States information reporting requirements and backup withholding tax
will not apply to payments on the debt securities to a non-U.S. holder if the
statement described in "Interest Income" is duly provided by such holder,
provided that the payor does not have actual knowledge that the holder is a
United States person. Information reporting requirements and backup withholding
tax will not apply to any payment of the proceeds of the sale of debt securities
effected outside the United States by a foreign office of a "broker" as defined
in applicable Treasury regulations, unless such broker (1) is a United States
person as defined in the Internal Revenue Code, (2) is a foreign person that
derives 50% or more of its gross income for certain periods from the conduct of
a trade or business in the United States, (3) is a controlled foreign
corporation for United States federal income tax purposes or (4) is a foreign
partnership with certain U.S. connections. Payment of the proceeds of any such
sale effected outside the United States by a foreign office of any broker that
is described in the preceding sentence may be subject to backup withholding tax
and information reporting requirements, unless such broker has documentary
evidence in its records that the beneficial owner is a non-U.S. holder and
certain other conditions are met, or the beneficial owner otherwise establishes
an exemption. Payment of the proceeds of any such sale to or through the United
States office of a broker is subject to information reporting and backup
withholding requirements unless the beneficial owner of the debt securities
provides the statement described in "Interest Income" or otherwise establishes
an exemption.

     THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED
FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A HOLDER'S
PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO
THE TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF THE DEBT
SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN AND OTHER
TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN UNITED STATES FEDERAL OR OTHER
TAX LAWS.

TAXATION OF DEBT SECURITIES OF ENERGY FINANCE II

     This subsection describes the material United States federal income tax
consequences of owning and disposing of the debt securities offered by Energy
Finance II. It deals only with debt securities that are due to mature 30 years
or less from the date on which they are issued. The United States federal income
tax consequences of owning and disposing of debt securities that are due to
mature more than 30 years from the date of issue will be discussed in an
applicable prospectus supplement. The discussion regarding U.S. income tax laws,
including the statements regarding the Tax Treaty, assumes that any debt
securities will be issued, and transfers thereof and payments thereon will be
made, in accordance with the applicable indenture and deposit agreement.

U.S. HOLDERS OF DEBT SECURITIES

Interest Income

     Subject to the original issue discount rules described below, payments of
interest on the debt securities (including the amount of Canadian tax withheld,
if any) generally will be taxable to a U.S. holder as ordinary interest income
at the time such payments are accrued or received (in accordance with the
holder's regular method of tax accounting).

     A debt security will be treated as issued with original issue discount
("OID") if its stated redemption price at maturity exceeds its issue price by
more than a de minimis amount. Generally, the issue price will be the first
price at which a substantial amount of the debt securities is sold to persons
other than bond houses, brokers or similar persons or organizations acting in
the capacity of underwriters, placement agents

                                        47
<PAGE>   52

or wholesalers. A debt security's stated redemption price at maturity is the
total of all payments on the debt security that are not payments of qualified
stated interest. An interest payment is qualified stated interest if it is one
of a series of stated interest payments that are unconditionally payable at
least annually at a single fixed rate.

     A debt security is not treated as issued with OID if the OID, i.e., if the
excess of the stated redemption price at maturity of a debt security over its
issue price, is de minimis. For this purpose the amount of OID is de minimis if
it does not exceed the product of 0.25 percent of the stated redemption price at
maturity multiplied by the number of complete years to maturity. If the debt
security has de minimis OID, a holder must generally include the de minimis
amount in income (as capital gain) when stated principal payments are made.

     If the debt securities are treated as issued with OID, a U.S. holder will
be required to include the amount of the OID in income periodically over the
term of the debt security before receipt of the cash or other payment
attributable to such income and irrespective of such holder's general method of
tax accounting. In particular, a U.S. holder of a debt security must include in
gross income, as interest for United States federal income tax purposes, the sum
of the daily portions of OID with respect to the debt security for each day
during the taxable year or portion of a taxable year in which such holder holds
the debt security ("accrued OID"). The daily portion is determined by allocating
to each day of an accrual period a pro rata portion of an amount equal to the
adjusted issue price of the debt security at the beginning of the accrual period
multiplied by the yield to maturity of the debt security and subtracting from
this product the amount of qualified stated interest allocable to the accrual
period. The adjusted issue price of the debt security at the start of any
accrual period is the issue price of the debt security increased by the accrued
OID for each prior accrual period and decreased by the amount of any payments
previously made with respect to the debt security (other than qualified stated
interest).

Source of Income and Foreign Tax Credits With Respect to Debt Securities of
Energy Finance II

     If Canadian withholding taxes are imposed on payments on the debt
securities issued by Energy Finance II, such payments will be foreign source
income and the interest payments will generally constitute "passive income" for
foreign tax credit purposes. Moreover, if Canadian withholding taxes are imposed
on the interest payments at a rate that equals or exceeds 5%, such interest
income would constitute "high withholding tax interest" for United States
foreign tax credit purposes. A U.S. holder who is entitled under the Tax Treaty
to a refund of Canadian tax, if any, withheld on interest on the debt securities
will not be entitled to claim a foreign tax credit with respect to such withheld
tax. A U.S. holder that does not claim a foreign tax credit may be entitled to a
deduction for United States federal income tax purposes with respect to any such
Canadian withholding taxes. The calculation of foreign tax credits or deductions
involves the application of complex rules that depend on a holder's particular
circumstances. Accordingly, U.S. holders are urged to consult their tax advisors
regarding the creditability or deductibility of such taxes. For a discussion of
the Canadian income tax considerations, see "Certain Canadian Federal Income Tax
Considerations."

Debt Securities Purchased at a Market Discount

     A holder will be considered to have purchased a debt security at a "market
discount" if the holder's adjusted basis in the debt security is less than its
stated redemption price at maturity, or in the case of a debt security issued at
a discount, its adjusted issue price, unless such market discount is a de
minimis amount (generally up to 1/4 of 1 percent of the stated redemption price
or adjusted issue price, as the case may be, on the purchase date multiplied by
its weighted average maturity as of such date). In general, any partial payment
of principal on, or gain recognized on the maturity or disposition of, the debt
security will be treated as ordinary income to the extent that such gain does
not exceed the accrued market discount on the underlying debenture.
Alternatively, a holder of a debt security may elect to include market discount
in income currently over the life of the debt security. Such an election applies
to all debt instruments with market discount acquired by the electing holder on
or after the first day of the first taxable year to which the election applies
and may not be revoked without the consent of the Internal Revenue Service.
                                        48
<PAGE>   53

     Market discount accrues on a straight-line basis unless the holder elects
to accrue such discount on a constant yield to maturity basis. Such an election
is applicable only to the debt security with respect to which it is made and is
irrevocable. A holder of a debt security that does not elect to include market
discount in income currently generally will be required to defer deductions for
interest on borrowings allocable to such debt security in an amount not
exceeding the accrued market discount on such debt security until the maturity
or disposition of such debt security.

Debt Securities Purchased at a Premium

     A holder will be considered to have purchased the debt security at a
premium if the holder's adjusted basis in the debt security immediately after
the purchase is greater than the stated redemption price at maturity of the debt
security. A holder may elect to treat such premium as "amortizable bond
premium," in which case the amount of interest required to be included in the
holder's income each year with respect to the interest on the debt security will
be reduced by the amount of the amortizable bond premium allocable (based on the
debt security's yield to maturity) to such year. Any election to amortize bond
premium is applicable to all bonds (other than bonds the interest on which is
excludible from gross income) held by the holder at the beginning of the first
taxable year to which the election applies or thereafter acquired by the holder,
and may not be revoked without the consent of the Internal Revenue Service.

Sale or Exchange of Debt Securities

     A holder will generally recognize taxable gain or loss equal to the
difference between the amount realized on the sale, exchange or other
disposition of the debt security and the holder's adjusted tax basis in such
debt security (subject to the discussion above regarding market discount, which
may be treated as ordinary income). A holder's adjusted tax basis in the debt
security generally will be the initial purchase price paid therefore, increased
by any OID or market discount previously included in income with respect to the
debt security and reduced by any amortizable bond premium. In the case of a
holder other than a corporation, preferential tax rates may apply to gain
recognized on the sale of a debt security if such holder's holding period for
such debt security exceeds one year.

     To the extent the selling price is less than the holder's adjusted tax
basis, the holder will recognize a capital loss. Subject to certain limited
exceptions, capital losses cannot be applied to offset ordinary income for
United States federal income tax purposes.

Other Debt Securities

     Special tax rules may apply to certain types of debt securities including,
but not limited to, debt securities subject to contingencies, variable rate debt
securities and debt securities convertible into equity of Calpine. The
applicable prospectus supplement will discuss any such special United States
federal income tax rules with respect to such debt securities.

Information Reporting and Backup Withholding Tax

     In general, information reporting requirements will apply to payments of
principal, premium, if any, and interest on the debt securities and payments of
the proceeds of the sale of the debt securities, and a backup withholding tax
(currently 30.5%) may apply to such payments if the holder fails to comply with
certain identification requirements. Any amounts withheld under the backup
withholding rules from a payment to a holder will be allowed as a credit against
such holder's United States federal income tax and may entitle the holder to a
refund, provided that the required information is furnished to the Internal
Revenue Service.

     THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED
FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A HOLDER'S
PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO
THE TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF THE DEBT
SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN AND OTHER
TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN UNITED STATES FEDERAL OR OTHER
TAX LAWS.
                                        49
<PAGE>   54

               CERTAIN CANADIAN FEDERAL INCOME TAX CONSIDERATIONS

     In the opinion of McCarthy Tetrault LLP, Calgary, Alberta, Canada, Canadian
tax counsel to Energy Finance and Energy Finance II, the following summary
addresses the material Canadian federal income tax considerations to persons who
deal at arm's length with the issuer and are non-residents of Canada of
purchasing, owning and disposing of debt securities which constitute capital
property, for the purpose of the Income Tax Act (Canada) (the "ITA"), to such
persons. This summary is based on the current provisions of the ITA and the
regulations thereunder, the understanding of McCarthy Tetrault LLP of the
current assessing and administrative practices of Canada Customs and Revenue
Agency ("CCRA") and all specific proposals to amend the ITA and the regulations
thereunder publicly announced by the Minister of Finance (Canada) before the
date of this prospectus supplement. This summary does not otherwise take into
account or anticipate changes in the law or in the assessment and administrative
practices of CCRA, whether by judicial, governmental or legislative decision or
action, nor does it take into account tax legislation or considerations of any
province or territory of Canada or any jurisdiction other than Canada. This
summary is of a general nature only and is not intended to be, and should not be
interpreted as, legal or tax advice to any holder of debt securities. This
summary is not applicable to any holder other than an initial holder who
purchases debt securities pursuant to this offering.

     The payment of interest, premium, if any, and principal by Calpine Canada
Energy Finance on the debt securities of a particular series to initial holders
who are not resident or deemed to be resident in Canada with whom Energy Finance
or Energy Finance II is dealing at arms' length, within the meaning of the ITA,
at the time of making the payment will be exempt from non-resident withholding
tax under the ITA, provided that the terms of the debt securities of that
particular series do not require the issuer thereof to repay more than 25% of
the principal amount payable thereunder before the fifth anniversary of the date
of issue of that particular series of debt securities. For the purposes of the
ITA, related persons (as defined therein) are deemed not to deal at arm's length
and it is a question of fact whether persons not related to each other deal at
arm's length. If the terms of the debt securities of a particular series do
require the issuer to repay more than 25% of the principal amount thereof before
the fifth anniversary of the date of issue thereof, or if a holder thereof does
not deal at arm's length with the issuer, the payment of interest thereon will
be subject to non-resident withholding tax under the ITA at the rate of 25%
thereof (or, if applicable, a lower rate specified by a tax treaty between
Canada and the holder's country of residence). For the purposes of the ITA,
related persons (as defined therein) are deemed not to deal at arm's length and
it is a question of fact whether persons not related to each other deal at arm's
length.

     No other tax on income (including capital gains) will be payable under the
ITA in respect of the holding, repayment, redemption or disposition of the debt
securities, or the receipt of interest, premium, if any, or principal thereon by
holders who are not resident, or deemed to be resident, in Canada and who do not
use or hold, and are not deemed to use or hold, the senior notes in carrying on
business in Canada, for the purpose of the ITA, except that in certain
circumstances, holders who have made an election to have the senior notes
treated as taxable Canadian property or who are non-resident insurers carrying
on business in Canada, and elsewhere, may be subject to such taxes.

                                 LEGAL MATTERS

     The validity of the debt and equity securities of Calpine offered hereby
will be passed upon for us by Covington & Burling, New York, New York. The
validity of the debt securities of Energy Finance and Energy Finance II offered
hereby will be passed upon for us by Covington & Burling, New York, New York and
by McCarthy Tetrault LLP, Calgary, Alberta, Canada. Any underwriters will be
represented by Skadden, Arps, Slate, Meagher & Flom LLP, New York, New York.

                                    EXPERTS

     The audited financial statements incorporated by reference in this
prospectus and elsewhere in the registration statement have been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto, and are included herein in reliance upon the
authority of said firm as experts in giving said reports.

                                        50
<PAGE>   55

                                 [CALPINE LOGO]
<PAGE>   56

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

     The following table sets forth the costs and expenses payable by Calpine
Corporation ("Calpine") in connection with sales of the securities being
registered. All amounts are estimates except the SEC registration statement
filing fee.

<Table>
<S>                                                           <C>
SEC Registration Statement filing fee.......................  $  375,000
Legal fees and expenses.....................................     300,000
Accounting fees and expenses................................      75,000
Trustee's fees and expenses (including counsel fees)........     120,000
Printing fees...............................................     360,000
Transfer agent fees.........................................      12,000
Miscellaneous...............................................      13,000
                                                              ----------
  Total.....................................................  $1,255,000
                                                              ==========
</Table>

ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

CALPINE CORPORATION

     Section 145 of the General Corporation Law of the State of Delaware (the
"Delaware Law") empowers a Delaware corporation to indemnify any persons who
are, or are threatened to be made, parties to any threatened, pending or
completed legal action, suit or proceedings, whether civil, criminal,
administrative or investigative (other than action by or in the right of such
corporation), by reason of the fact that such person was an officer or director
of such corporation, or is or was serving at the request of such corporation as
a director, officer, employee or agent of another corporation or enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines and
amounts paid in settlement actually and reasonably incurred by such person in
connection with such action, suit or proceeding, provided that such officer or
director acted in good faith and in a manner he reasonably believed to be in or
not opposed to the corporation's best interests, and, for criminal proceedings,
had no reasonable cause to believe his conduct was unlawful. A Delaware
corporation may indemnify officers and directors in an action by or in the right
of the corporation under the same conditions, except that no indemnification is
permitted without judicial approval if the officer or director is adjudged to be
liable to the corporation in the performance of his duty. Where an officer or
director is successful on the merits or otherwise in the defense of any action
referred to above, the corporation must indemnify him against the expenses which
such officer or director actually and reasonably incurred.

     In accordance with the Delaware Law, the certificate of incorporation of
Calpine contains a provision to limit the personal liability of the directors of
Calpine for violations of their fiduciary duty. This provision eliminates each
director's liability to Calpine or its stockholders for monetary damages except
(i) for any breach of the director's duty of loyalty to Calpine or its
stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) under Section 174 of
the Delaware Law providing for liability of directors for unlawful payment of
dividends or unlawful stock purchases or redemptions, or (iv) for any
transaction from which a director derived an improper personal benefit. The
effect of this provision is to eliminate the personal liability of directors for
monetary damages for actions involving a breach of their fiduciary duty of care,
including any such actions involving gross negligence.

     Article Ten of the bylaws of Calpine provides for indemnification of the
officers and directors of Calpine to the fullest extent permitted by applicable
law.

     Calpine has entered into indemnification agreements with its directors and
officers. These agreements provide substantially broader indemnity rights than
those provided under the Delaware Law and the

                                       II-1
<PAGE>   57

Calpine's bylaws. The indemnification agreements are not intended to deny or
otherwise limit third-party or derivative suits against Calpine or its directors
or officers, but if a director or officer were entitled to indemnity or
contribution under the indemnification agreement, the financial burden of a
third-party suit would be borne by Calpine, and Calpine would not benefit from
derivative recoveries against the director or officer. Such recoveries would
accrue to the benefit of Calpine but would be offset by Calpine's obligations to
the director or officer under the indemnification agreement. In addition, the
directors of Calpine are insured under officers and directors liability
insurance policies.

CALPINE CANADA ENERGY FINANCE ULC

     Every director or officer, former director or officer, or person who acts
or acted at the request of Calpine Canada Energy Finance ULC, as a director or
officer of Calpine Canada Energy Finance ULC, a body corporate, partnership or
other association of which Calpine Canada Energy Finance ULC is or was a
shareholder, partner, member or creditor, and the heirs and legal
representatives of such person, in the absence of any dishonesty on the part of
such person, shall be indemnified by Calpine Canada Energy Finance ULC against
all costs, losses and expenses, including an amount paid to settle an action or
claim or satisfy a judgment, that such person may incur or become liable to pay
in respect of any claim made against such person or civil, criminal or
administrative action or proceeding to which such person is made a party by
reason of being or having been a director or officer of Calpine Canada Energy
Finance ULC.

CALPINE CANADA ENERGY FINANCE II ULC

     Every director or officer, former director or officer, or person who acts
or acted at the request of Calpine Canada Energy Finance II ULC, as a director
or officer of Calpine Canada Energy Finance II ULC, a body corporate,
partnership or other association of which Calpine Canada Energy Finance II ULC
is or was a shareholder, partner, member or creditor, and the heirs and legal
representatives of such person, in the absence of any dishonesty on the part of
such person, shall be indemnified by Calpine Canada Energy Finance II ULC
against all costs, losses and expenses, including an amount paid to settle an
action or claim or satisfy a judgment, that such person may incur or become
liable to pay in respect of any claim made against such person or civil,
criminal or administrative action or proceeding to which such person is made a
party by reason of being or having been a director or officer of Calpine Canada
Energy Finance II ULC.

ITEM 16. EXHIBITS.

<Table>
<Caption>
    EXHIBIT
    NUMBER                            DESCRIPTION
    -------                           -----------
    <C>       <S>
      1.1     Form of Underwriting Agreement with respect to Common Stock,
              Preferred Stock and Debt Securities of Calpine
              Corporation(a)
      1.2     Form of Underwriting Agreement with respect to Debt
              Securities of Calpine Canada Energy Finance ULC(f)
     *1.3     Form of Underwriting Agreement with respect to Debt
              Securities of Calpine Canada Energy Finance II ULC
      3.1     Amended and Restated Certificate of Incorporation of Calpine
              Corporation(b)
      3.2     Certificate of Correction of Calpine Corporation(a)
      3.3     Certificate of Amendment of Amended and Restated Certificate
              of Incorporation of Calpine Corporation (i)
      3.4     Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(a)
      3.5     Amended Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(a)
      3.6     Amended Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(i)
</Table>

                                       II-2
<PAGE>   58

<Table>
<Caption>
    EXHIBIT
    NUMBER                            DESCRIPTION
    -------                           -----------
    <C>       <S>
      3.7     Certificate of Designation of Special Voting Preferred Stock
              of Calpine Corporation(g)
      3.8     Amended and Restated By-laws of Calpine Corporation(c)
      3.9     Memorandum of Association of Calpine Canada Energy Finance
              ULC(h)
      3.10    Articles of Association of Calpine Canada Energy Finance
              ULC(h)
     *3.11    Memorandum of Association of Calpine Canada Energy Finance
              II ULC
     *3.12    Articles of Association of Calpine Canada Energy Finance II
              ULC
      4.1     Form of Indenture between Calpine Corporation and Wilmington
              Trust Company, including form of Note(d)
      4.2     Rights Agreement, dated as of June 5, 1997, between Calpine
              Corporation and First Chicago Trust Company of New York, as
              Rights Agent(e)
      4.3     Form of Indenture between Calpine Canada Energy Finance ULC
              and Wilmington Trust Company, including form of Note (the
              "Energy Finance Indenture")(f)
      4.4     Form of Guarantee Agreement of Calpine Corporation with
              respect to Senior Debt Securities of Calpine Canada Energy
              Finance ULC (the "Calpine/Energy Finance Guarantee")(f)
     *4.5     Form of Indenture between Calpine Canada Energy Finance II
              ULC and Wilmington Trust Company, including form of Note
              (the "Energy Finance II Indenture")
     *4.6     Form of Guarantee Agreement of Calpine Corporation with
              respect to Senior Debt Securities of Calpine Canada Energy
              Finance II ULC (the "Calpine/Energy Finance II Guarantee")
     +5.1     Opinion of Covington & Burling
     +8.1     Opinion of Covington & Burling as to certain U.S. Federal
              tax matters
     +8.2     Opinion of McCarthy Tetrault LLP as to certain Canadian
              Federal tax matters
    *12.1     Statement Regarding Computation of Ratios
    *23.1     Consent of Arthur Andersen LLP, independent public
              accountants
    +23.2     Consents of Covington & Burling (included in Exhibits 5.1
              and 8.1)
    +23.3     Consent of McCarthy Tetrault LLP (included in Exhibit 8.2)
    *24.1     Power of Attorney of Officers and Directors of Calpine (see
              pages II-6 and II-7)
    *24.2     Power of Attorney of Officers and Directors of Calpine
              Canada Energy Finance ULC (see pages II-8 and II-9)
    *24.2     Power of Attorney of Officers and Directors of Calpine
              Canada Energy Finance II ULC (see pages II-10 and II-11)
     25.1     Form T-1 Statement of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under the Calpine Corporation Indenture(d)
     25.2     Form T-1 Statements of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under each of (i) the Energy Finance Indenture, and
              (ii) the Calpine/Energy Finance Guarantee(f)
    *25.3     Form T-1 Statements of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under each of (i) the Energy Finance II Indenture,
              and (ii) the Calpine/Energy Finance II Guarantee
</Table>

-------------------------
 *  Filed herewith.

 +  To be filed by amendment.

 (a) Incorporated by reference to Calpine Corporation's Annual Report on Form
     10-K for the year ended December 31, 2000, filed with the SEC on March 15,
     2001.

(b) Incorporated by reference to Calpine Corporation's Registration Statement on
    Form S-3 (Registration No. 333-40652) filed with the SEC on June 30, 2000.

 (c) Incorporated by reference to Calpine Corporation's Registration Statement
     on Form S-1 (Registration No. 333-07497) filed with the SEC on August 22,
     1996.

                                       II-3
<PAGE>   59

(d) Incorporated by reference to Amendment No. 1 to Calpine Corporation's
    Registration Statement on Form S-3 (Registration No. 333-40652) filed with
    the SEC on July 24, 2000.

 (e) Incorporated by reference to Calpine Corporation's Registration Statement
     on Form 8-A filed with the SEC on June 18, 1997 and amended by Calpine's
     Registration Statement on Form 8-A/A filed with the SEC on June 24, 1997
     (File No. 001-12079).

 (f) Incorporated by reference to Amendment No. 1 to the Registration Statement
     on Form S-3 of Calpine Corporation and Calpine Canada Energy Finance ULC
     (Registration No. 333-57338) filed with the SEC on April 19, 2001.

 (g) Incorporated by reference to Calpine Corporation's Quarterly Report on Form
     10-Q for the quarter ended March 31, 2001, filed with the SEC on May 15,
     2001.

(h) Incorporated by reference to the Registration Statement on Form S-3 of
    Calpine Corporation and Calpine Canada Energy Finance ULC (Registration No.
    333-57338) filed with the SEC on March 21, 2001.

 (i) Incorporated by reference to the Registration Statement on Form S-3 of
     Calpine Corporation (Registration Statement No. 333-66078) filed with the
     SEC on July 27, 2001.

ITEM 17. UNDERTAKINGS

     The undersigned registrants hereby undertake:

          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this registration statement:

             (i) to include any prospectus required by Section 10(a)(3) of the
        Securities Act of 1933;

             (ii) to reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the registration statement. Notwithstanding the foregoing, any
        increase or decrease in volume of securities offered (if the total
        dollar value of securities offered would not exceed that which was
        registered) and any deviation from the low or high end of the estimated
        maximum offering range may be reflected in the form of prospectus filed
        with the Commission pursuant to Rule 424(b) if, in the aggregate, the
        changes in volume and price represent no more than 20 percent change in
        the maximum aggregate offering price set forth in the "Calculation of
        Registration Fee" table in the effective registration statement;

             (iii) to include any material information with respect to the plan
        of distribution not previously disclosed in the registration statement
        or any material change to such information in the registration
        statement.

          (2) That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.

          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.

          (4) If either of the registrants is a foreign private issuer, to file
     a post-effective amendment to the registration statement to include any
     financial statements required by Rule 3-19 of this chapter at the start of
     any delayed offering or throughout a continuous offering. Financial
     statements and information otherwise required by Section 10(a)(3) of the
     Act need not be furnished, provided, that the registrants include in the
     prospectus, by means of a post-effective amendment, financial statements
     required pursuant to this paragraph (a)(4) and other information necessary
     to ensure that

                                       II-4
<PAGE>   60

     all other information in the prospectus is at least as current as the date
     of those financial statements. Notwithstanding the foregoing, with respect
     to registration statements on Form F-3, a post-effective amendment need not
     be filed to include financial statements and information required by
     Section 10(a)(3) of the Act or Rule 3-19 of this chapter if such financial
     statements and information are contained in periodic reports filed with or
     furnished to the Commission by the registrant pursuant to Section 13 or
     Section 15(d) of the Securities Exchange Act of 1934 that are incorporated
     by reference in the Form F-3.

     The undersigned registrants hereby undertake that, for purposes of
determining any liability under the Securities Act of 1933, each filing of
Calpine Corporation's annual report pursuant to Section 13(a) or Section 15(d)
of the Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrants pursuant to the foregoing provisions, or otherwise, the registrants
have been advised that in the opinion of the SEC such indemnification is against
public policy as expressed in the Securities Act of 1933 and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the registrants of expenses incurred or
paid by a director, officer or controlling person of the registrants in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrants will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act of 1933 and will be
governed by the final adjudication of such issue.

     The undersigned registrants hereby undertake that:

     For purposes of determining any liability under the Securities Act of 1933,
the information omitted from the form of prospectus filed as part of this
registration statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the registrant pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act shall be deemed to be part of this registration
statement as of the time it was declared effective.

     For purposes of determining any liability under the Securities Act of 1933,
each post-effective amendment that contains a form of prospectus shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.

                                       II-5
<PAGE>   61

                                   SIGNATURES

                              CALPINE CORPORATION

     Pursuant to the requirements of the Securities Act of 1933, Calpine
Corporation certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing this Registration Statement on Form S-3 and
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized in the City of San Jose, State of
California, on this 13th day of August, 2001.

                                          CALPINE CORPORATION

                                          By        /s/ ANN B. CURTIS
                                            ------------------------------------
                                                       Ann B. Curtis
                                                Executive Vice President and
                                                  Chief Financial Officer

                               POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS:

     That the undersigned officers and directors of Calpine Corporation do
hereby constitute and appoint Peter Cartwright and Ann B. Curtis, and each of
them, the lawful attorney and agent or attorneys and agents with power and
authority to do any and all acts and things and to execute any and all
instruments which said attorneys and agents, or either of them, determine may be
necessary or advisable or required to enable Calpine Corporation to comply with
the Securities and Exchange Act of 1934, as amended, and any rules or
regulations or requirements of the Securities and Exchange Commission in
connection with this Registration Statement on Form S-3. Without limiting the
generality of the foregoing power and authority, the powers granted include the
power and authority to sign the names of the undersigned officers and directors
in the capacities indicated below to this Registration Statement or amendments
or supplements thereto, and each of the undersigned hereby ratifies and confirms
all that said attorneys and agents, or either of them, shall do or cause to be
done by virtue hereof. This Power of Attorney may be signed in several
counterparts.

     IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated opposite the name.

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
Registration Statement on Form S-3 has been signed below by the following
persons on behalf of Calpine Corporation and in the capacities and on the dates
indicated.

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                /s/ PETER CARTWRIGHT                     Chairman, President, Chief     August 13, 2001
-----------------------------------------------------  Executive Officer and Director
                  Peter Cartwright                      (Principal Executive Officer)

                  /s/ ANN B. CURTIS                    Executive Vice President, Chief  August 13, 2001
-----------------------------------------------------  Financial Officer and Director
                    Ann B. Curtis                       (Principal Financial Officer)

              /s/ CHARLES B. CLARK, JR.                 Vice President and Corporate    August 13, 2001
-----------------------------------------------------       Controller (Principal
                Charles B. Clark, Jr.                        Accounting Officer)
</Table>

                                       II-6
<PAGE>   62

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                 /s/ KENNETH T. DERR                              Director              August 13, 2001
-----------------------------------------------------
                   Kenneth T. Derr

                                                                  Director              August   , 2001
-----------------------------------------------------
                  Jeffrey E. Garten

                /s/ GERALD GREENWALD                              Director              August 13, 2001
-----------------------------------------------------
                  Gerald Greenwald

                 /s/ SUSAN C. SCHWAB                              Director              August 13, 2001
-----------------------------------------------------
                   Susan C. Schwab

               /s/ GEORGE J. STATHAKIS                            Director              August 13, 2001
-----------------------------------------------------
                 George J. Stathakis

                 /s/ JOHN O. WILSON                               Director              August 13, 2001
-----------------------------------------------------
                   John O. Wilson
</Table>

                                       II-7
<PAGE>   63

                                   SIGNATURES

                       CALPINE CANADA ENERGY FINANCE ULC

     Pursuant to the requirements of the Securities Act of 1933, Calpine Canada
Energy Finance ULC certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing this Registration Statement on Form S-3
and has duly caused this Registration Statement to be signed on its behalf by
the undersigned, thereunto duly authorized in the City of Calgary, Province of
Alberta, on this 13th day of August, 2001.

                                      CALPINE CANADA ENERGY FINANCE ULC

                                      By        /s/ DAVID D. JOHNSON
                                        ----------------------------------------
                                                    David D. Johnson
                                                     Vice President

                               POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS:

     That the undersigned officers and directors of Calpine Canada Energy
Finance ULC do hereby constitute and appoint Peter Cartwright, Ann B. Curtis and
David D. Johnson, and each of them, the lawful attorney and agent or attorneys
and agents with power and authority to do any and all acts and things and to
execute any and all instruments which said attorneys and agents, or either of
them, determine may be necessary or advisable or required to enable Calpine
Canada Energy Finance ULC to comply with the Securities and Exchange Act of
1934, as amended, and any rules or regulations or requirements of the Securities
and Exchange Commission in connection with this Registration Statement on Form
S-3. Without limiting the generality of the foregoing power and authority, the
powers granted include the power and authority to sign the names of the
undersigned officers and directors in the capacities indicated below to this
Registration Statement or amendments or supplements thereto, and each of the
undersigned hereby ratifies and confirms all that said attorneys and agents, or
either of them, shall do or cause to be done by virtue hereof. This Power of
Attorney may be signed in several counterparts.

     IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated opposite the name.

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
Registration Statement on Form S-3 has been signed below by the following
persons on behalf of Calpine Canada Energy Finance ULC and in the capacities and
on the dates indicated.

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                                                         Vice President and Director    August   , 2001
-----------------------------------------------------
                  Steven A. Allaire
                  /s/ DANIEL ALLARD                               Director              August 13, 2001
-----------------------------------------------------
                    Daniel Allard
                /s/ PETER CARTWRIGHT                       President and Director       August 13, 2001
-----------------------------------------------------   (Principal Executive Officer)
                  Peter Cartwright
</Table>

                                       II-8
<PAGE>   64

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                  /s/ ANN B. CURTIS                       Executive Vice President,     August 13, 2001
-----------------------------------------------------      Secretary and Director
                    Ann B. Curtis                         (Principal Financial and
                                                             Accounting Officer)

                /s/ DAVID D. JOHNSON                     Vice President and Director    August 13, 2001
-----------------------------------------------------
                  David D. Johnson

            Authorized Representative in                                                August 13, 2001
                  the United States
                  /s/ ANN B. CURTIS
-----------------------------------------------------
              Authorized Representative
</Table>

                                       II-9
<PAGE>   65

                                   SIGNATURES

                      CALPINE CANADA ENERGY FINANCE II ULC

     Pursuant to the requirements of the Securities Act of 1933, Calpine Canada
Energy Finance II ULC certifies that it has reasonable grounds to believe that
it meets all of the requirements for filing this Registration Statement on Form
S-3 and has duly caused this Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized in the City of Calgary, Province
of Alberta, on this 13th day of August, 2001.

                                      CALPINE CANADA ENERGY FINANCE II ULC

                                      By        /s/ DAVID D. JOHNSON
                                        ----------------------------------------
                                                    David D. Johnson
                                                     Vice President

                               POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS:

     That the undersigned officers and directors of Calpine Canada Energy
Finance II ULC do hereby constitute and appoint Peter Cartwright, Ann B. Curtis
and David D. Johnson, and each of them, the lawful attorney and agent or
attorneys and agents with power and authority to do any and all acts and things
and to execute any and all instruments which said attorneys and agents, or
either of them, determine may be necessary or advisable or required to enable
Calpine Canada Energy Finance II ULC to comply with the Securities and Exchange
Act of 1934, as amended, and any rules or regulations or requirements of the
Securities and Exchange Commission in connection with this Registration
Statement on Form S-3. Without limiting the generality of the foregoing power
and authority, the powers granted include the power and authority to sign the
names of the undersigned officers and directors in the capacities indicated
below to this Registration Statement or amendments or supplements thereto, and
each of the undersigned hereby ratifies and confirms all that said attorneys and
agents, or either of them, shall do or cause to be done by virtue hereof. This
Power of Attorney may be signed in several counterparts.

     IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated opposite the name.

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
Registration Statement on Form S-3 has been signed below by the following
persons on behalf of Calpine Canada Energy Finance II ULC and in the capacities
and on the dates indicated.

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                                                         Vice President and Director    August   , 2001
-----------------------------------------------------
                  Steven A. Allaire

                  /s/ DANIEL ALLARD                               Director              August 13, 2001
-----------------------------------------------------
                    Daniel Allard

                /s/ PETER CARTWRIGHT                       President and Director       August 13, 2001
-----------------------------------------------------   (Principal Executive Officer)
                  Peter Cartwright
</Table>

                                      II-10
<PAGE>   66

<Table>
<Caption>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                    <C>                              <S>
                  /s/ ANN B. CURTIS                       Executive Vice President,     August 13, 2001
-----------------------------------------------------      Secretary and Director
                    Ann B. Curtis                         (Principal Financial and
                                                             Accounting Officer)

                /s/ DAVID D. JOHNSON                     Vice President and Director    August 13, 2001
-----------------------------------------------------
                  David D. Johnson
</Table>

<Table>
<Caption>
            Authorized Representative in                                                August 13, 2001
                  the United States
                  /s/ ANN B. CURTIS
-----------------------------------------------------
              Authorized Representative
<C>                                                    <C>                              <S>
</Table>

                                      II-11
<PAGE>   67

                               INDEX TO EXHIBITS

<Table>
<Caption>
    EXHIBIT
    NUMBER                            DESCRIPTION
    -------                           -----------
    <C>       <S>
      1.1     Form of Underwriting Agreement with respect to Common Stock,
              Preferred Stock and Debt Securities of Calpine
              Corporation(a)
      1.2     Form of Underwriting Agreement with respect to Debt
              Securities of Calpine Canada Energy Finance ULC(f)
     *1.3     Form of Underwriting Agreement with respect to Debt
              Securities of Calpine Canada Energy Finance II ULC
      3.1     Amended and Restated Certificate of Incorporation of Calpine
              Corporation(b)
      3.2     Certificate of Correction of Calpine Corporation(a)
      3.3     Certificate of Amendment of Amended and Restated Certificate
              of Incorporation of Calpine Corporation(i)
      3.4     Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(a)
      3.5     Amended Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(a)
      3.6     Amended Certificate of Designation of Series A Participating
              Preferred Stock of Calpine Corporation(i)
      3.7     Certificate of Designation of Special Voting Preferred Stock
              of Calpine Corporation(g)
      3.8     Amended and Restated By-laws of Calpine Corporation(c)
      3.9     Memorandum of Association of Calpine Canada Energy Finance
              ULC(h)
      3.10    Articles of Association of Calpine Canada Energy Finance
              ULC(h)
     *3.11    Memorandum of Association of Calpine Canada Energy Finance
              II ULC
     *3.12    Articles of Association of Calpine Canada Energy Finance II
              ULC
      4.1     Form of Indenture between Calpine Corporation and Wilmington
              Trust Company, including form of Note(d)
      4.2     Rights Agreement, dated as of June 5, 1997, between Calpine
              Corporation and First Chicago Trust Company of New York, as
              Rights Agent(e)
      4.3     Form of Indenture between Calpine Canada Energy Finance ULC
              and Wilmington Trust Company, including form of Note (the
              "Energy Finance Indenture")(f)
      4.4     Form of Guarantee Agreement of Calpine Corporation with
              respect to Senior Debt Securities of Calpine Canada Energy
              Finance ULC (the "Calpine/Energy Finance Guarantee")(f)
     *4.5     Form of Indenture between Calpine Canada Energy Finance II
              ULC and Wilmington Trust Company, including form of Note
              (the "Energy Finance II Indenture")
     *4.6     Form of Guarantee Agreement of Calpine Corporation with
              respect to Senior Debt Securities of Calpine Canada Energy
              Finance II ULC (the "Calpine/Energy Finance II Guarantee")
     +5.1     Opinion of Covington & Burling
     +8.1     Opinion of Covington & Burling as to certain U.S. Federal
              tax matters
     +8.2     Opinion of McCarthy Tetrault LLP as to certain Canadian
              Federal tax matters
    *12.1     Statement Regarding Computation of Ratios
    *23.1     Consent of Arthur Andersen LLP, independent public
              accountants
    +23.2     Consents of Covington & Burling (included in Exhibits 5.1
              and 8.1)
    +23.3     Consent of McCarthy Tetrault LLP (included in Exhibit 8.2)
    *24.1     Power of Attorney of Officers and Directors of Calpine (see
              pages II-6 and II-7)
    *24.2     Power of Attorney of Officers and Directors of Calpine
              Canada Energy Finance ULC (see pages II-8 and II-9)
    *24.2     Power of Attorney of Officers and Directors of Calpine
              Canada Energy Finance II ULC (see pages II-10 and II-11)
     25.1     Form T-1 Statement of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under the Calpine Corporation Indenture(d)
</Table>
<PAGE>   68

<Table>
<Caption>
    EXHIBIT
    NUMBER                            DESCRIPTION
    -------                           -----------
    <C>       <S>
     25.2     Form T-1 Statements of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under each of (i) the Energy Finance Indenture, and
              (ii) the Calpine/Energy Finance Guarantee (f)
    *25.3     Form T-1 Statements of Eligibility under the Trust Indenture
              Act of 1939, as amended, of Wilmington Trust Company, as
              Trustee under each of (i) the Energy Finance II Indenture,
              and (ii) the Calpine/Energy Finance II Guarantee
</Table>

-------------------------
 *  Filed herewith.

 +  To be filed by amendment.

 (a) Incorporated by reference to Calpine Corporation's Annual Report on Form
     10-K for the year ended December 31, 2000, filed with the SEC on March 15,
     2001.

(b) Incorporated by reference to Calpine Corporation's Registration Statement on
    Form S-3 (Registration No. 333-40652) filed with the SEC on June 30, 2000.

 (c) Incorporated by reference to Calpine Corporation's Registration Statement
     on Form S-1 (Registration No. 333-07497) filed with the SEC on August 22,
     1996.

(d) Incorporated by reference to Amendment No. 1 to Calpine Corporation's
    Registration Statement on Form S-3 (Registration No. 333-40652) filed with
    the SEC on July 24, 2000.

 (e) Incorporated by reference to Calpine Corporation's Registration Statement
     on Form 8-A filed with the SEC on June 18, 1997 and amended by Calpine's
     Registration Statement on Form 8-A/A filed with the SEC on June 24, 1997
     (File No. 001-12079).

 (f) Incorporated by reference to Amendment No. 1 to the Registration Statement
     on Form S-3 of Calpine Corporation and Calpine Canada Energy Finance ULC
     (Registration No. 333-57338) filed with the SEC on April 19, 2001.

 (g) Incorporated by reference to Calpine Corporation's Quarterly Report on Form
     10-Q for the quarter ended March 31, 2001, filed with the SEC on May 15,
     2001.

(h) Incorporated by reference to the Registration Statement on Form S-3 of
    Calpine Corporation and Calpine Canada Energy Finance ULC (Registration No.
    333-57338) filed with the SEC on March 21, 2001.

 (i) Incorporated by reference to the Registration Statement on Form S-3 of
     Calpine Corporation (Registration Statement No. 333-66078) filed with the
     SEC on July 27, 2001.

