UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549




                                    FORM 10-Q

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934 for the quarterly period ended June 30, 2001

                                       OR

[ ]  TRANSITION  REPORT  PURSUANT  TO  SECTION  13  OR 15(d) OF  THE  SECURITIES
     EXCHANGE ACT OF 1934 for the transition period from _________ to __________


                         Commission file number: 1-12079

                               CALPINE CORPORATION

                            (A Delaware Corporation)

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

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



     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.

                                 Yes [X] No [ ]

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date:

304,986,024  shares of Common Stock,  par value $.001 per share,  outstanding on
August 13, 2001




                      CALPINE CORPORATION AND SUBSIDIARIES
                               Report on Form 10-Q
                       For the Quarter Ended June 30, 2001



                                      INDEX

                                                                                                              Page No.
PART I - FINANCIAL INFORMATION
                                                                                                             

           ITEM 1.  Financial Statements.
                       Consolidated Condensed Balance Sheets
                       June 30, 2001 and December 31, 2000....................................................    3
                       Consolidated Condensed Statements of Operations
                       For the Three and Six Months Ended June 30, 2001 and 2000..............................    4
                       Consolidated Condensed Statements of Cash Flows
                       For the Six Months Ended June 30, 2001 and 2000........................................    5
                       Notes to Consolidated Condensed Financial Statements
                       June 30, 2001..........................................................................    6

           ITEM 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations.....   14

           ITEM 3.  Quantitative and Qualitative Disclosures About Market Risk................................   25

PART II - OTHER INFORMATION

           ITEM 2.  Change in Securities and Use of Proceeds..................................................   25

           ITEM 4.  Submission of Matters to a Vote of Security Holders.......................................   25

           ITEM 6.  Exhibits and Reports on Form 8-K..........................................................   26

Signatures..................................................................................................     28







PART I - FINANCIAL INFORMATION

ITEM 1.  Financial Statements.

                      CALPINE CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                       June 30, 2001 and December 31, 2000
               (in thousands, except share and per share amounts)
                                   (unaudited)


                                                                                      June 30,     December 31,
                                                                                        2001           2000
                                                                                    ------------   ------------
                                     ASSETS
                                                                                             
Current assets:
   Cash and cash equivalents ....................................................   $  1,241,520   $    596,077
   Accounts receivable, net of allowance of $17,521 and $11,555 .................      1,046,080        727,893
   Inventories ..................................................................         56,615         44,456
   Prepaid expense ..............................................................         77,239         27,515
   Other current assets .........................................................      1,087,610         41,165
                                                                                    ------------   ------------
      Total current assets ......................................................      3,509,064      1,437,106
                                                                                    ------------   ------------

Property, plant and equipment, net ..............................................     10,399,454      7,979,160
Investments in power projects ...................................................        261,189        205,621
Project development costs .......................................................         92,001         38,597
Notes receivable ................................................................        354,301        217,927
Restricted cash .................................................................         97,949         88,618
Deferred financing costs ........................................................        159,949        112,049
Other assets ....................................................................      1,145,158        244,125
                                                                                    ------------   ------------
      Total assets ..............................................................   $ 16,019,065   $ 10,323,203
                                                                                    ============   ============
                      LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
   Notes payable and borrowings under lines of credit, current portion ..........   $      1,258   $      1,087
   Accounts payable .............................................................        914,960        843,641
   Zero-Coupon Convertible Debentures Due 2021 ..................................      1,000,000           --
   Project financing, current portion ...........................................          1,396         58,486
   Capital lease obligation, current portion ....................................          2,251          1,985
   Income taxes payable .........................................................           --           63,409
   Accrued payroll and related expense ..........................................         57,038         53,667
   Accrued interest payable .....................................................        126,130         77,878
   Other current liabilities ....................................................        897,281        149,080
                                                                                    ------------   ------------
      Total current liabilities .................................................      3,000,314      1,249,233
                                                                                    ------------   ------------
Notes payable and borrowings under lines of credit, net of current portion ......         10,587        455,067
Project financing, net of current portion .......................................      1,776,435      1,473,869
Senior notes ....................................................................      5,096,750      2,551,750
Capital lease obligation, net of current portion ................................        208,839        208,876
Deferred income taxes, net ......................................................        768,057        620,807
Deferred lease incentive ........................................................         58,989         60,676
Deferred revenue ................................................................        102,581         92,511
Other liabilities ...............................................................        985,287         30,529
                                                                                    ------------   ------------
      Total liabilities .........................................................     12,007,839      6,743,318
                                                                                    ------------   ------------
Company-obligated mandatorily redeemable
   convertible preferred securities of subsidiary trusts ........................      1,122,706      1,122,490
Minority interests ..............................................................         40,733         37,576
Stockholders' equity:
   Preferred stock, $.001 par value per share; authorized 10,000,000
      shares; issued and outstanding none in 2001 and 2000 ......................           --             --
   Common stock, $.001 par value per share; authorized 1,000,000,000
      shares in 2001 and 500,000,000 shares in 2000; issued and outstanding
      304,162,586 shares in 2001 and 300,074,078 shares in 2000 .................            304            300
   Additional paid-in capital ...................................................      1,993,849      1,896,987
   Retained earnings ............................................................        775,223        547,895
   Accumulated other comprehensive income (loss) ................................         78,411        (25,363)
                                                                                    ------------   ------------
      Total stockholders' equity ................................................      2,847,787      2,419,819
                                                                                    ------------   ------------
      Total liabilities and stockholders' equity ................................   $ 16,019,065   $ 10,323,203
                                                                                    ============   ============

                 The accompanying notes are an integral part of
               these consolidated condensed financial statements.


                      CALPINE CORPORATION AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
            For the Three and Six Months Ended June 30, 2001 and 2000
                    (in thousands, except per share amounts)
                                   (unaudited)


                                                                            Three Months Ended                Six Months Ended
                                                                                 June 30,                         June 30,
                                                                        --------------------------       --------------------------
                                                                            2001           2000              2001           2000
                                                                        -----------    -----------       -----------    -----------
                                                                                                            
Revenue:
   Electric generation and marketing revenue ........................   $ 1,257,340    $   341,611       $ 2,307,407    $   547,679
   Oil and gas production and marketing revenue .....................       343,012         69,652           628,871        136,627
   Income from unconsolidated investments in power projects .........         1,600          4,843             2,163         14,617
   Other revenue ....................................................        10,921          1,050            14,183          3,431
                                                                        -----------    -----------       -----------    -----------
       Total revenue ................................................     1,612,873        417,156         2,952,624        702,354
                                                                        -----------    -----------       -----------    -----------
Cost of revenue:
   Electric generation and marketing expense ........................       731,497         78,722         1,283,232        131,607
   Oil and gas production and marketing expense .....................       245,638         25,104           398,549         55,543
   Fuel expense .....................................................       228,430        104,044           485,444        177,696
   Depreciation expense .............................................        72,144         50,702           144,157         95,815
   Operating lease expense ..........................................        27,449         10,672            55,460         21,130
   Other expense ....................................................         3,490          1,280             5,989          2,780
                                                                        -----------    -----------       -----------    -----------
       Total cost of revenue ........................................     1,308,648        270,524         2,372,831        484,571
                                                                        -----------    -----------       -----------    -----------
       Gross profit .................................................       304,225        146,632           579,793        217,783
Project development expense .........................................         4,372          5,228            20,211          9,390
General and administrative expense ..................................        50,537         18,508            86,622         28,740
Nonrecurring merger cost ............................................        35,606           --              41,627           --
                                                                        -----------    -----------       -----------    -----------
       Income from operations .......................................       213,710        122,896           431,333        179,653
Other expense (income):
   Interest expense .................................................        43,331         18,202            63,256         39,955
   Distributions on trust preferred securities ......................        15,387          9,085            30,562         16,063
   Interest income ..................................................       (20,531)        (5,615)          (39,889)       (13,177)
   Other expense (income), net ......................................        (3,291)           178            (9,018)          (380)
                                                                        -----------    -----------       -----------    -----------
       Income before provision for income taxes .....................       178,814        101,046           386,422        137,192
Provision for income taxes ..........................................        69,849         41,538           158,830         56,583
                                                                        -----------    -----------       -----------    -----------
       Income before extraordinary charge and cumulative effect of a
        change in accounting principle ..............................       108,965         59,508           227,592         80,609
Extraordinary charge, net of tax benefit of $834 ....................        (1,300)          --              (1,300)          --
Cumulative effect of a change in accounting principle ...............          --             --               1,036           --
                                                                        -----------    -----------       -----------    -----------
       Net income ...................................................   $   107,665    $    59,508       $   227,328    $    80,609
                                                                        ===========    ===========       ===========    ===========
Basic earnings per common share:
     Weighted average shares of common stock outstanding ............       302,729        271,505           301,641        270,516
     Income before extraordinary charge and cumulative effect of a
        change in accounting principle ..............................   $      0.36    $      0.22       $      0.75    $      0.30
     Extraordinary charge ...........................................   $      --      $      --         $      --      $      --
     Cumulative effect of a change in accounting principle ..........   $      --      $      --         $      --      $      --
                                                                        -----------    -----------       -----------    -----------
     Net income .....................................................   $      0.36    $      0.22       $      0.75    $      0.30
                                                                        ===========    ===========       ===========    ===========
Diluted earnings per common share:
     Weighted average shares of common stock outstanding before
      dilutive effect of certain convertible securities .............       318,255        287,271           317,544        286,439
     Income before dilutive effect of certain convertible securities,
      extraordinary charge and change in accounting principle .......   $      0.34    $      0.21       $      0.72    $      0.28
     Dilutive effect of certain convertible securities (1) ..........   $     (0.02)   $     (0.01)      $     (0.04)   $      --
                                                                        -----------    -----------       -----------    -----------
     Income before extraordinary charge and cumulative effect of a
        change in accounting principle ..............................   $      0.32    $      0.20       $      0.68    $      0.28
     Extraordinary charge ...........................................   $      --      $      --         $      --      $      --
     Cumulative effect of a change in accounting principle ..........   $      --      $      --         $      --      $      --
                                                                        -----------    -----------       -----------    -----------
     Net income .....................................................   $      0.32    $      0.20       $      0.68    $      0.28
                                                                        ===========    ===========       ===========    ===========

(1)  Includes  the  effect of the  assumed  conversion  of  certain  convertible
     securities.  For the three and six months ended June 30, 2001,  the assumed
     conversion  calculation  adds 41,964 and 49,379  shares of common stock and
     $7,507 and $20,838 to the net income  results,  representing  the after tax
     expense on certain convertible securities avoided upon conversion.  For the
     three  and  six  months  ended  June  30,  2000,  the  assumed   conversion
     calculation adds 18,912 shares of common stock and $2,439 and $4,878 to the
     net income results.

              The accompanying notes are an integral part of these
                  consolidated condensed financial statements.


                      CALPINE CORPORATION AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                 For the Six Months Ended June 30, 2001 and 2000
                                 (in thousands)
                                   (unaudited)


                                                          Six Months Ended June 30,
                                                             2001           2000
                                                         -----------    -----------
                                                                  
Cash flows from operating activities:
   Net income ........................................   $   227,328    $    80,609
   Adjustments to reconcile net income to net cash
    provided by operating activities:
      Depreciation and amortization ..................       148,552        102,893
      Deferred income taxes, net .....................       123,937          5,960
      Income from unconsolidated investments in
       power projects ................................        (2,163)       (14,617)
      Distributions from unconsolidated power projects         2,459         19,413
      Minority interest ..............................         3,157            407
      Change in long-term liabilities ................     1,061,206           --
      Change in operating assets and liabilities, net
       of effects of acquisitions:
      Accounts receivable ............................      (315,344)      (105,688)
      Inventories ....................................       (12,159)          (953)
      Other current assets ...........................    (1,072,306)        (9,906)
      Notes receivable ...............................       (43,624)       (16,955)
      Other assets ...................................      (901,012)        11,866
      Accounts payable and accrued expense ...........       131,502         40,358
      Other current liabilities and deferred revenue .       749,190        (39,944)
                                                         -----------    -----------
         Net cash provided by operating activities ...       100,723         73,443
                                                         -----------    -----------
Cash flows from investing activities:
   Purchases of property, plant and equipment ........    (2,556,789)      (968,475)
   Acquisitions, net of cash acquired ................          (252)      (201,823)
   Capital expenditures on joint ventures ............       (63,871)      (134,561)
   Maturities of collateral securities ...............         2,885          3,315
   Project development costs .........................       (55,314)       (47,767)
   Decrease in notes receivable ......................       (93,723)       (32,040)
   Increase in restricted cash .......................       (24,705)          (192)
   Other .............................................         8,384           --
                                                         -----------    -----------
         Net cash used in investing activities .......    (2,783,385)    (1,381,543)
                                                         -----------    -----------
Cash flows from financing activities:
   Proceeds from notes payable and borrowings
     under lines of credit ...........................           258        443,776
   Repayments of notes payable and borrowings
     under lines of credit ...........................      (444,568)        (9,159)
   Borrowings from project financing .................     1,479,673        361,965
   Repayments of project financing ...................    (1,234,433)          --
   Proceeds from issuance of senior notes ............     2,650,000           --
   Repayments of senior notes ........................      (105,000)          --
   Proceeds from issuance of convertible securities ..     1,000,000        360,000
   Proceeds from issuance of common stock ............        49,369          6,519
   Financing costs ...................................       (64,534)       (25,099)
   Other .............................................        (2,660)         8,504
                                                         -----------    -----------
         Net cash provided by financing activities ...     3,328,105      1,146,506
                                                         -----------    -----------
Net increase (decrease) in cash and cash equivalents .       645,443       (161,594)
Cash and cash equivalents, beginning of period .......       596,077        349,371
                                                         -----------    -----------
Cash and cash equivalents, end of period .............   $ 1,241,520    $   187,777
                                                         ===========    ===========
Cash paid during the period for:
   Interest ..........................................   $   208,903    $    94,911
   Income taxes ......................................   $   114,083    $    37,113

                 The accompanying notes are an integral part of
               these consolidated condensed financial statements.


                      CALPINE CORPORATION AND SUBSIDIARIES
              NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS
                                  June 30, 2001
                                   (unaudited)

1.   Organization and Operation of the Company

Calpine  Corporation  ("Calpine"),  a  Delaware  corporation,  and  subsidiaries
(collectively, "the Company") is engaged in the generation of electricity in the
United States and Canada. In pursuing this single business strategy, the Company
is involved in the  development,  acquisition,  ownership and operation of power
generation  facilities and the sale of electricity and its  by-product,  thermal
energy,  primarily in the form of steam. The Company has ownership  interests in
and operates gas-fired power generation and cogeneration facilities, gas fields,
gathering  systems and gas  pipelines,  geothermal  steam fields and  geothermal
power  generation  facilities  in the  United  States  and  Canada.  Each of the
generation facilities produces and markets electricity for sale to utilities and
other  third  party  purchasers.   Thermal  energy  produced  by  the  gas-fired
cogeneration  facilities is primarily sold to governmental and industrial users.
Gas produced and not physically  delivered to the Company's generating plants is
sold to third parties.

2.   Summary of Significant Accounting Policies

Basis of Interim Presentation -- The accompanying unaudited interim consolidated
condensed financial  statements of the Company have been prepared by the Company
pursuant to the rules and regulations of the Securities and Exchange Commission.
In the opinion of management,  the consolidated  condensed financial  statements
include the adjustments  necessary to present fairly the information required to
be set forth  therein.  The Company's  historical  amounts have been restated to
reflect the pooling-of-interests transaction completed during the second quarter
(see Note 6). Certain  information  and note  disclosures  normally  included in
financial  statements  prepared in accordance with generally accepted accounting
principles  in the United  States  have been  condensed  or  omitted  from these
statements  pursuant  to such  rules and  regulations  and,  accordingly,  these
financial statements should be read in conjunction with the audited consolidated
financial  statements of the Company  included in the Company's annual report on
Form 10-K for the year ended December 31, 2000. The results for interim  periods
are not necessarily indicative of the results for the entire year.

Use of Estimates in  Preparation of Financial  Statements -- The  preparation of
financial statements in conformity with generally accepted accounting principles
in the United States requires  management to make estimates and assumptions that
affect the  reported  amounts  of assets  and  liabilities,  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the reported amounts of revenue and expense during the reporting period.  Actual
results could differ from those estimates.  The most significant  estimates with
regard to these financial  statements relate to future development costs, useful
lives of the generation facilities,  and depletion,  depreciation and impairment
of natural gas and petroleum property and equipment.

Revenue  Recognition -- The Company is primarily an electric generation company,
operating  a  portfolio  of mostly  wholly owned  plants but also some plants in
which its  ownership  interest is 50% or less and which are  accounted for under
the equity method.  In conjunction with its electric  generation  business,  the
Company also  produces,  as a by-product,  thermal energy for sale to customers,
principally  steam hosts at its  cogeneration  sites.  In addition,  the Company
acquires and produces  natural gas for its own consumption and sells the balance
and small  amounts of oil to third  parties.  To protect  and enhance the profit
potential  of  its  electric   generation  plants,  the  Company,   through  its
subsidiary,  Calpine Energy Services,  LP ("CES"),  enters into electric and gas
hedging,  balancing and related transactions in which purchased  electricity and
gas is resold to third  parties.  CES acts as a  principal,  takes  title to the
commodities  purchased  for  resale,  and  assumes  the  risks  and  rewards  of
ownership.  Therefore,  in accordance with Staff Accounting Bulletin No. 101 and
the Emerging Issues Task Force ("EITF") Issue No. 99-19, CES recognizes  revenue
on a gross basis,  except in the case of financial swap  transactions,  in which
case the net gain or loss from the  hedging  instrument  is  recorded  in income
against  the  underlying  hedged  item when the  effects of the hedged  item are
recognized. Hedged items typically include sales to third parties of natural gas
produced,  purchases of natural gas to fuel power plants, and sales of generated
electricity.  Finally,  the Company,  through Power  Systems Mfg.,  LLC ("PSM"),
designs  and  manufactures  spare  parts  for gas  turbines.  The  Company  also
generates  small  amounts  of  revenue by  occasionally  loaning  funds to power
projects  and  by  providing  operation  and  maintenance  ("O&M")  services  to
unconsolidated   power  plants.   Further  details  of  the  Company's   revenue
recognition policy for each type of revenue transaction are provided below:

     Electric Generation and Marketing Revenue -- This includes  electricity and
     steam sales,  gains and losses from electric power derivatives and sales of
     purchased  power.  The Company  actively manages the revenue stream for its
     portfolio of electric  generating  facilities.  CES performs a market-based
     allocation of electric  generation and marketing revenue to electricity and
     steam  sales.  That  allocation  is based on  electricity  delivered by the
     Company's  electric  generating  facilities to serve CES contracts.  As the
     Company  actively  manages the revenue stream for its portfolio of electric
     generation facilities,  it is appropriate to review the Company's financial
     performance using all electric generation and marketing revenue.

     Oil and Gas  Production  and Marketing  Revenue -- This  includes  sales to
     third  parties of gas,  oil and related  products  that are produced by the
     Company's  Calpine Natural Gas and Calpine Canada Natural Gas  subsidiaries
     and also sales of purchased gas.

     Income from  Unconsolidated  Investments  in Power  Projects -- The Company
     uses the equity  method to  recognize  as revenue its pro rata share of the
     net income or loss of the  unconsolidated  investment  until such time,  if
     applicable,  the  Company's  investment  is reduced to zero,  at which time
     equity   income  is  generally   recognized   only  upon  receipt  of  cash
     distributions from the investee.

     Other Revenue -- This  includes O&M contract  revenue,  interest  income on
     loans to power  projects,  PSM  revenue  from  sales to third  parties  and
     miscellaneous revenue.

Energy Marketing Operations -- The Company markets energy services to utilities,
wholesalers,  and end users.  CES  provides  these  services  by  entering  into
contracts to purchase or supply energy,  primarily, at specified delivery points
and specified  future dates. CES also utilizes  financial  instruments to manage
its exposure to electricity and natural gas price fluctuations,  and to a lesser
degree,  price  fluctuations  of crude oil and  refined  products.  The  Company
actively manages its positions,  and the Company's  policy  prohibits  positions
that exceed production capacity and fuel requirements. The Company's credit risk
associated   with   energy   contracts   results   from  the   risk-of-loss   on
non-performance by counterparties. The Company reviews and assesses counterparty
risk to limit any  material  impact on its  financial  position  and  results of
operations.  The  Company  does  not  believe  there  is a  significant  risk of
non-performance by the counterparties.

New  Accounting  Pronouncements  --  In  July  2001,  the  Financial  Accounting
Standards  Board ("FASB")  issued  Statement of Financial  Accounting  Standards
("SFAS")  No.  141,  "Business   Combinations",   which  supersedes   Accounting
Principles Board ("APB") Opinion No. 16, "Business  Combinations".  SFAS No. 141
eliminates   the   pooling-of-interests   method  of  accounting   for  business
combinations and modifies the application of the purchase accounting method. The
elimination  of the  pooling-of-interests  method is effective for  transactions
initiated after June 30, 2001. The remaining  provisions of SFAS No. 141 will be
effective  for  transactions  accounted  for using the purchase  method that are
completed  after June 30,  2001.  The Company does not believe that SFAS No. 141
will have a material impact on its consolidated financial statements.

In July 2001, the FASB issued SFAS No. 142,  "Goodwill and  Intangible  Assets",
which  supersedes  APB  Opinion  No.  17,  "Intangible  Assets".  SFAS  No.  142
eliminates  the current  requirement to amortize  goodwill and  indefinite-lived
intangible  assets,  extends the  allowable  useful lives of certain  intangible
assets,  and  requires  impairment  testing and  recognition  for  goodwill  and
intangible  assets.  SFAS No. 142 will apply to goodwill and  intangible  assets
arising from  transactions  completed both before and after its effective  date.
The  provisions of SFAS No. 142 are required to be applied  starting with fiscal
years  beginning after December 15, 2001. The Company does not believe that SFAS
No. 142 will have a material impact on its consolidated financial statements.

Reclassifications  --  Prior  period  amounts  in  the  consolidated   condensed
financial  statements have been  reclassified  where necessary to conform to the
2001 presentation.

3.   Derivative Instruments

On January 1, 2001, the Company adopted SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities." The Company currently holds four classes of
derivative  instruments  that are impacted by the new  pronouncement  - interest
rate swaps, commodity financial instruments,  commodity contracts,  and physical
options.  Additionally,  one of the Company's unconsolidated investees holds two
foreign exchange forward contracts.

The Company enters into various  interest rate swap  agreements to hedge against
changes  in  floating  interest  rates  on  certain  of  its  project  financing
facilities. The interest rate swap agreements effectively convert floating rates
into fixed rates so that the Company can predict with greater assurance what its
future  interest costs will be and protect itself against  increases in floating
rates.

The Company enters into commodity  financial  instruments to convert floating or
indexed  electricity  and gas (and to a lesser  extent oil and refined  product)
prices to fixed prices in order to lessen its  vulnerability  to  reductions  in
electric  prices for the  electricity it generates,  to reductions in gas prices
for the gas it produces, and to increases in gas prices for the fuel it consumes
in its power  plants.  The Company  seeks to  "self-hedge"  its gas  consumption
exposure to the maximum extent with its gas production position.

The Company routinely enters into commodity contracts for sales of its generated
electricity  and  sales  of its  natural  gas  production  to  ensure  favorable
utilization of generation and production  assets.  Such contracts often meet the
criteria  of SFAS No. 133 as  derivatives  but are  generally  eligible  for the
normal purchase and sales exception under SFAS No. 138,  "Accounting for Certain
Derivative  Instruments  and Certain  Hedging  Activities - An Amendment of FASB
Statement  No. 133." For those that are not deemed  normal  purchases and sales,
most  can be  designated  as  hedges  of  the  underlying  production  of gas or
electricity.

The Company also enters into physical options for short-term  periods (typically
one month) to balance its short-term generating position. The options, which the
Company may write or purchase,  typically  provide for a premium  component  and
firm price for energy when exercised.

Upon  adoption of SFAS No. 133,  the fair values of all  derivative  instruments
were recorded on the balance sheet as assets or  liabilities.  The fair value of
derivative  instruments is based on present value adjusted  quoted market prices
of comparable  contracts.  For derivative  instruments  that were  designated as
hedges,  the difference between the carrying values of the derivatives and their
fair values at the date of adoption was recorded as a transition adjustment.  At
adoption,  such  derivatives were designated as cash flow hedges and were deemed
highly  effective.   Accordingly,   a  transition  adjustment  was  recorded  to
accumulated other  comprehensive  income ("OCI").  In the case of capacity sales
contracts,  a transition  adjustment was recorded to earnings as a gain from the
cumulative effect of a change in accounting principle.

At the end of each quarter, the changes in fair values of derivative instruments
designated as cash flow hedges are recorded in OCI for the effective portion and
in  current  earnings,  using the  dollar  offset  method,  for the  ineffective
portion. The changes in fair values of derivative instruments designated as fair
value hedges are recorded in current earnings, as are the changes in fair values
of the  contracts  being  hedged.  The  changes  in fair  values  of  derivative
instruments that are not designated as hedges are recorded in current earnings.

The FASB has cleared  SFAS No. 133  Implementation  Issue No. C15 dealing with a
proposed  electric  industry  normal  purchases and sales exception for capacity
sales  transactions ("The Eligibility of Option Contracts on Electricity for the
Normal  Purchases and Normal Sales  Exception").  As a result,  certain capacity
sales  contracts  currently  held by the  Company  will  qualify  for the normal
purchases and sales exception.

The table below reflects the amounts (in thousands) that are recorded as assets,
liabilities  and  in  OCI  at  June  30,  2001  for  the  Company's   derivative
instruments.


                                                                                     Commodity        Total
                                                                    Interest Rate    Derivative     Derivative
                                                                        Swaps       Instruments    Instruments
                                                                    -------------   -----------    -----------
                                                                                          
Current derivative asset (1) .....................................   $      --      $ 1,048,198    $ 1,048,198
Long-term derivative asset (2) ...................................          --          874,306        874,306
                                                                     -----------    -----------    -----------
   Total assets ..................................................   $      --      $ 1,922,504    $ 1,922,504
                                                                     ===========    ===========    ===========
Current derivative liability (3) .................................   $    12,886    $   677,045    $   689,931
Long-term derivative liability (4) ...............................        13,000        944,448        957,448
                                                                     -----------    -----------    -----------
     Total liabilities ...........................................   $    25,886    $ 1,621,493    $ 1,647,379
                                                                     ===========    ===========    ===========
Total comprehensive income (loss) ................................   $   (25,937)   $   176,933    $   150,996
Reclassification adjustment for activity included in net income ..          --           21,792         21,792
Income tax benefit (expense) .....................................         8,970        (78,406)       (69,436)
                                                                     -----------    -----------    -----------
     Net comprehensive income (loss) .............................   $   (16,967)   $   120,319    $   103,352
                                                                     ===========    ===========    ===========
(1) Included in other current assets
(2) Included in other assets
(3) Included in other current liabilities
(4) Included in other liabilities


During the three and six months  ended June 30,  2001,  the  Company  recognized
gains on  derivatives  not  designated  as  hedges  of $67.2  million  and $69.7
million, respectively,  which were recorded in electric generation and marketing
revenue, and $27.4 and $34.5 million, respectively,  which were recorded in fuel
expense.

During the three and six months  ended June 30,  2001,  the  Company  recognized
pretax losses of $4.0 million and $3.5 million,  respectively,  related to hedge
ineffectiveness  on gas contracts,  which are included in fuel expense.  For the
three and six months ended June 30, 2001, the Company recognized pretax gains of
$1.2  million  and  zero,  respectively,  related  to hedge  ineffectiveness  on
electricity  contracts,  which are included in electric generation and marketing
revenue.  The Company did not exclude any  components of derivative  instruments
from the assessment of hedge effectiveness.

As of June 30,  2001,  the  maximum  length of time over  which the  Company  is
hedging its  exposure  to the  variability  in future cash flows for  forecasted
transactions  is 17.5 years.  The Company  estimates that pretax gains of $358.3
million will be reclassified  from accumulated OCI into earnings during the next
twelve months as the hedged transactions affect earnings.

4.   Property, Plant and Equipment, Net and Capitalized Interest

Property, plant and equipment, net consisted of the following (in thousands):


                                                      June 30,      December 31,
                                                        2001            2000
                                                    ------------    ------------
                                                             
Geothermal properties ...........................   $    356,089    $   334,585
Oil and gas properties ..........................      1,666,933      1,441,175
Buildings, machinery and equipment ..............      2,982,315      1,951,250
Power sales agreements ..........................        139,932        162,086
Gas contracts ...................................        143,619        129,999
Other ...........................................        190,065        145,877
                                                    ------------    -----------
                                                       5,478,953      4,164,972
Less accumulated depreciation and amortization ..       (828,384)      (614,816)
                                                    ------------    -----------
                                                       4,650,569      3,550,156
Land ...........................................          68,630         12,578
Construction in progress .......................       5,680,255      4,416,426
                                                    ------------    -----------
Property, plant and equipment, net .............    $ 10,399,454    $ 7,979,160
                                                    ============    ===========


Construction in progress is primarily  attributable to gas-fired  projects under
construction.  Upon commencement of plant operation, these costs are transferred
to buildings, machinery and equipment.

Capitalized  Interest -- The Company capitalizes interest on capital invested in
projects during the advanced stages of development and the construction  period,
in  accordance  with SFAS No.  34, as amended by SFAS No. 58. For the six months
ended June 30, 2001 and 2000, the Company recorded net interest expense of $63.3
million and $40.0 million,  respectively,  after capitalizing $153.7 million and
$52.0 million,  respectively,  of interest on general  corporate  funds used for
construction and after recording $65.9 million and $15.3 million,  respectively,
of interest  capitalized on funds borrowed for specific  construction  projects.
Upon commencement of plant operation,  capitalized  interest,  as a component of
the total cost of the plant, is amortized over the estimated  useful life of the
plant. The increase in the amount of interest  capitalized during the six months
ended June 30, 2001,  reflects the  significant  increase in the Company's power
plant construction program.

5.   Notes Receivable

As of June 30, 2001 and December 31, 2000,  the  components of notes  receivable
were (in thousands):


                                                June 30,    December 31,
                                                  2001          2000
                                               ---------    ------------
                                                       
PG&E note ..................................   $  84,208     $  62,336
Delta note .................................     243,402       112,050
Other ......................................      38,237        43,724
                                               ---------     ---------
         Total notes receivable ............     365,847       218,110
Less: Notes receivable, current portion ....     (11,546)         (183)
                                               ---------     ---------
Notes receivable, net of current portion....   $ 354,301     $ 217,927
                                               =========     =========


Calpine  Gilroy Cogen,  LP ("Gilroy") had a long-term  power purchase  agreement
("PPA") with Pacific Gas and  Electric  Company  ("PG&E") for the sale of energy
through  2018.  The terms of the PPA provided for 120 megawatts of firm capacity
and up to 10  megawatts  of  as-delivered  capacity.  On December  2, 1999,  the
California  Public Utilities  Commission  approved the  restructuring of the PPA
between Gilroy and PG&E. Under the terms of the  restructuring,  PG&E and Gilroy
are each released  from  performance  under the PPA effective  November 1, 2002.
Under the restructured  contract, in addition to the normal capacity revenue for
the period,  Gilroy will earn from September  1999 to October 2002  restructured
capacity  revenue it would have earned over the November 2002 through March 2018
time period,  for which PG&E issues  notes to the  Company.  These notes will be
paid by PG&E during the period from February 2003 to September 2014.

In 1999, the Company,  together with Bechtel Enterprises ("Bechtel"),  began the
development  of an  880-megawatt  gas-fired  cogeneration  project in Pittsburg,
California.  As part of this  joint  venture,  the  Company  has a note from the
project, Delta Energy Center, LLC, bearing interest at 11.37% per annum.

6.   Acquisitions and Asset Purchases

On  April 3,  2001,  the  Company  acquired  all of the  common  shares  of WRMS
Engineering,  Inc. ("WRMS"),  a  California-based  engineering and architectural
firm, through a stock-for-stock  exchange in which WRMS shareholders  received a
total of 151,176  shares of Calpine  common stock.  The  aggregate  value of the
transaction was approximately $7.8 million,  including the assumed  indebtedness
of WRMS.

On April 11, 2001, the Company acquired the development  rights from Enron North
America for the 750-megawatt  natural  gas-fired  Pastoria Energy Center planned
for Kern County,  California.  The project was licensed by the California Energy
Commission  in December  2000.  Construction  began in June 2001 and  commercial
operation is scheduled for the summer of 2003.

On April 17, 2001, the Company  acquired the  development  rights from Kirkland,
Washington-based  National Energy Systems Company for the  248-megawatt  natural
gas-fired  Goldendale Energy Center planned for Goldendale,  Washington.  Energy
generated from the Goldendale  facility will be sold directly into the Northwest
Power Pool.  Construction  commenced in April 2001,  and energy  deliveries  are
scheduled to begin July 1, 2002.

On April 17, 2001, the Company acquired assets of The Bayless  Companies and its
partners with reserves  located in the western  portion of the San Juan Basin in
New  Mexico.  Currently  35 wells  produce  approximately  6 million  cubic feet
equivalent per day ("mmcfe/d"), 96 percent of which is natural gas.

On April 19, 2001, the Company acquired all of the common shares of Encal Energy
Ltd.  ("Encal")  (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 the
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 Calpine common
stock.  The  aggregate  value of the  transaction  was  approximately  U.S. $1.1
billion,  including  the assumed  indebtedness  of Encal.  The  transaction  was
accounted  for under  the  pooling-of-interests  method  and,  accordingly,  all
historical amounts reflected in the consolidated  condensed financial statements
have been restated to reflect the  transaction.  To date,  the Company  incurred
$41.6  million  in  nonrecurring  merger  costs for this  transaction.  With the
addition of Encal's assets, which currently produce  approximately 230 mmcfe per
day, net of royalties,  Calpine's net production  increased to 390 mmcfe per day
in North  America,  enough to fuel  approximately  2,300  megawatts of its power
fleet.

7.   Project Financing

In connection  with  financings  in the second  quarter (see Notes 8 and 9), the
Company repaid approximately $874 million of its project financing.  The Company
drew $870.1 million on the Calpine  Construction  Finance Company debt revolvers
during the quarter.

8.   Senior Notes

On April 25, 2001,  Calpine  Canada Energy Finance ULC ("Energy  Finance"),  the
Company's  indirect  wholly owned  subsidiary,  issued $1.5 billion in aggregate
principal  amount of its 8 1/2% Senior Notes Due 2008. The Energy Finance Senior
Notes Due 2008 are fully and unconditionally guaranteed by the Company.

On June 7, 2001, the Company redeemed all $105 million in aggregate  outstanding
principal  amount of its 9 1/4% Senior Notes Due 2004 at a  redemption  price of
100% of the principal  amount plus accrued interest to the redemption date. As a
result,  the Company  recorded a $1.3 million  extraordinary  charge  related to
writing off the unamortized balance of deferred financing costs.

9.   Zero-Coupon Convertible Debentures

On April 30, 2001, the Company completed the sale of $1.0 billion of Zero-Coupon
Convertible  Debentures Due 2021 in a private  placement  under Rule 144A of the
Securities  Act of 1933.  The  securities  are  convertible  into Calpine common
shares  at a price of $75.35 at the  option of the  holder at any time.  Holders
have the right to require the Company to  repurchase  their  debentures in 2002,
2004,  2006,  2008, 2011 and 2016 at a specified price in cash or Calpine common
stock at the Company's option,  except in 2016 when the repurchase price must be
paid in cash.  The  debentures are redeemable at the option of the Company after
2004 at a specified price in cash or Calpine common stock. As the holders of the
debentures  have the right to require the Company to repurchase  the  debentures
within a year, the debentures are classified as current.

10.  Equity

In the second quarter of 2001, the Company's  shareholders approved an amendment
to the  Articles of  Incorporation,  which  increased  the number of  authorized
shares of common stock to  1,000,000,000.  In  addition,  the Board of Directors
voted to  increase  the number of  authorized  shares of Series A  Participating
Preferred Stock to 1,000,000 shares.

11.  Comprehensive Income

Comprehensive  income is the total of net income and all other non-owner changes
in equity.  Comprehensive  income  includes net income and unrealized  gains and
losses from derivative  instruments that qualify as hedges.  The Company reports
accumulated other comprehensive income (loss) in its consolidated balance sheet.
Total comprehensive income is summarized as follows (in thousands):


                                                       Three Months Ended        Six Months Ended
                                                            June 30,                 June 30,
                                                     ---------------------     ---------------------
                                                        2001        2000          2001        2000
                                                     ---------    --------     ---------    --------
                                                                                
Net income ......................................    $ 107,665    $ 59,508     $ 227,328    $ 80,609
                                                     ---------    --------     ---------    --------
Other comprehensive income:
     Unrealized gain on cash flow hedges ........      260,957        --         172,788        --
     Gain on foreign currency translation .......        2,914        --             422        --
     Income tax expense .........................     (104,035)       --         (69,436)       --
                                                     ---------    --------     ---------    --------
        Other comprehensive income, net of tax ..      159,836        --         103,774        --
                                                     ---------    --------     ---------    --------
Total comprehensive income ......................    $ 267,501    $ 59,508     $ 331,102    $ 80,609
                                                     =========    ========     =========    ========


12.  Significant Customers

The Company's  significant customers at June 30, 2001, were PG&E and Enron Power
Marketing.  Due to the  increase  in volume  in CES  transactions,  Enron  Power
Marketing  has become a  significant  customer,  exceeding  10% of the Company's
revenue  for the  six  months  ended  June  30,  2001,  and 10% of the  accounts
receivable  balance at June 30,  2001.  Revenues  earned  from Enron were $340.9
million  and $1.3  million  for the six  months  ended  June 30,  2001 and 2000,
respectively. Receivables were $147.5 million and $46.0 million at June 30, 2001
and December 31, 2000,  respectively.  The  receivables  at June 30, 2001,  were
current and continue to be paid currently.

The Company's northern  California  Qualifying Facility ("QF") subsidiaries sell
power to PG&E under the terms of long-term  contracts at eleven  facilities.  On
April 6, 2001,  PG&E filed for  bankruptcy  protection  under  Chapter 11 of the
United  States  Bankruptcy  Code.  PG&E  is the  regulated  subsidiary  of  PG&E
Corporation,   and  the  information  on  PG&E  disclosed  below  excludes  PG&E
Corporation's  non-regulated  subsidiary activity.  The Company has transactions
with certain of the non-regulated subsidiaries,  which have not been affected by
PG&E's bankruptcy. See Note 16 for an update of the PG&E bankruptcy proceedings.

The  Company's  QF  contracts  with  PG&E  provide  that the  California  Public
Utilities  Commission  ("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 the  Company's  QF plants in  California
which sell power to PG&E.  Section 390 of the  California  Public  Utility  Code
provides  QFs the  option  to  elect to  receive  energy  payments  based on the
California  Power  Exchange  ("PX")  market  clearing  price.  In mid-2000,  the
Company's  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.  The Company believes 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  Energy
Regulatory 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  the Company  entered into with PG&E pursuant to which PG&E agreed
to assume its QF  contracts  with  Calpine in  bankruptcy,  PG&E agreed with the
Company  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 the
Company's agreement with PG&E to amend the QF contracts to adopt the fixed price
energy  component,  the energy price  component in Calpine's QF contracts is now
fixed for five  years and the  Company is no longer  subject to any  uncertainty
that may have existed  with  respect to this  component of Calpine's 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 the Company to assume the QF contracts
in bankruptcy or on the amount of the receivable that was so assumed.

Revenues  earned from PG&E for the three and six months  ended June 30, 2001 and
2000 were as follows (in thousands):


                       Three Months Ended June 30,     Six Months Ended June 30,
                       ---------------------------     -------------------------
                            2001         2000               2001       2000
                          --------     --------           --------   --------
                                                         
Revenues:
PG&E .................    $119,027     $ 97,870           $289,995   $139,029


Receivables  at June 30, 2001,  April 6, 2001,  and  December 31, 2000,  were as
follows (in thousands):


                               June 30, 2001   April 6, 2001   December 31, 2000
                               -------------   -------------   -----------------
                                                           
Receivables:
PG&E accounts receivable ....     $291,991        $265,588          $204,448


PG&E has paid currently for energy deliveries made after April 6, 2001, the PG&E
bankruptcy filing date.

The Company had a combined  accounts  receivable  balance of $14.2 million as of
June 30, 2001,  from the  California  Independent  System  Operator  Corporation
("CAISO") and Automated Power Exchange, Inc. ("APX"). CAISO's ability to pay the
Company is directly  impacted by PG&E's  ability to pay CAISO.  APX's ability to
pay the  Company  is  impacted  by PG&E's  ability to pay the  California  Power
Exchange,  which in turn pays APX for energy  deliveries by the Company  through
APX. The Company has provided a full reserve  against  collection  uncertainties
for  these  receivables.  See  Note  16 for an  update  on  the  Federal  Energy
Regulatory  Commission  ("FERC")  investigation  into the  California  wholesale
markets.

The Company also had an accounts  receivable balance of $26.2 million as of June
30, 2001, from the California  Department of Water Resources.  These receivables
at June 30, 2001, were current and continue to be paid currently.

13.  Purchased Power and Gas Sales and Expense

The  Company  records  the cost of gas  consumed  in its  power  plants  as fuel
expense,  while gas purchased  from third  parties,  for hedging,  balancing and
related activities, is recorded as purchased gas expense, a component of oil and
gas production  and marketing  expense.  The Company  records the actual revenue
received  from third  parties as sales of purchased  gas, a component of oil and
gas production and marketing revenue.

The cost of power  purchased  from third  parties,  for hedging,  balancing  and
related  purposes,  is recorded  as  purchased  power  expense,  a component  of
electric generation and marketing expense. The Company markets on a system basis
both power  generated by its plants in excess of amounts  under direct  contract
between the plant and a third party, and power purchased from third parties.

Although the Company believes it is most meaningful to review the combined total
of electric generation and marketing revenue, the table below shows the relative
levels and growth of power and gas hedging, balancing and related activity.


                                 Three Months Ended          Six Months Ended
                                      June 30,                   June 30,
                               -----------------------   -----------------------
                                  2001         2000         2001         2000
                               ----------   ----------   ----------   ----------
                                                          
Sales of purchased power ...   $  683,196   $   28,977   $1,136,798   $   41,121
Sales of purchased gas .....      226,693        7,727      355,865       16,331
                               ----------   ----------   ----------   ----------
         Total .............   $  909,889   $   36,704   $1,492,663   $   57,452
                               ==========   ==========   ==========   ==========

Purchased power expense ....   $  655,322   $   31,605   $1,111,588   $   42,852
Purchased gas expense ......      218,330        7,480      336,958       15,219
                               ----------   ----------   ----------   ----------
         Total .............   $  873,652   $   39,085   $1,448,546   $   58,071
                               ==========   ==========   ==========   ==========


14.  Earnings per Share

Basic  earnings  per common  share were  computed by dividing  net income by the
weighted  average  number of  common  shares  outstanding  for the  period.  The
dilutive  effect of the potential  exercise of  outstanding  options to purchase
shares of common  stock is  calculated  using the  treasury  stock  method.  The
dilutive effect of the assumed conversion of certain convertible securities into
the Company's common stock is based on the dilutive common share equivalents and
the after tax distribution  expense avoided upon conversion.  The reconciliation
of basic earnings per common share to diluted earnings per share is shown in the
following  table (in thousands  except per share data).  All share data has been
adjusted  to reflect  the  two-for-one  stock  split that  became  effective  on
November 14, 2000.


                                                                                       Periods Ended June 30,
                                                                   ---------------------------------------------------------------
                                                                                2001                            2000
                                                                   ------------------------------   ------------------------------
                                                                      Net                             Net
                                                                    Income      Shares      EPS      Income     Shares       EPS
                                                                   ---------    -------    ------   --------    -------     ------
                                                                                                          
THREE MONTHS:
Basic earnings per common share:
Income before extraordinary charge and cumulative
  effect of a change in accounting principle ....................  $ 108,965    302,729    $ 0.36   $ 59,508    271,505     $ 0.22
Extraordinary charge, net of tax benefit ........................     (1,300)      --         --        --         --          --
Cumulative effect of a change in accounting principle,
  net of tax ....................................................       --         --         --        --         --          --
                                                                   ---------    -------    ------   --------    -------     ------
Net income ......................................................  $ 107,665    302,729    $ 0.36   $ 59,508    271,505     $ 0.22
                                                                   =========    =======    ======   ========    =======     ======
Common shares issuable upon exercise of stock options
  using treasury stock method ...................................                15,526                          15,766
                                                                                -------                           -----
Diluted earnings per common share:
Income before dilutive effect of certain convertible
  securities, extraordinary charge and cumulative effect
  of a change in accounting principle ...........................  $ 108,965    318,255    $ 0.34   $ 59,508    287,271     $ 0.21
Dilutive effect of certain convertible securities ...............      7,507     41,964     (0.02)     2,439     18,912      (0.01)
                                                                   ---------    -------    ------   --------    -------     ------
Income before  extraordinary  charge and cumulative effect
  of a change in accounting principle ...........................    116,472    360,219      0.32     61,947    306,183       0.20
Extraordinary charge, net of tax benefit ........................     (1,300)      --         --        --         --          --
Cumulative effect of a change in accounting principle,
  net of tax ....................................................       --         --         --        --         --          --
                                                                   ---------    -------    ------   --------    -------     ------
Net income ......................................................  $ 115,172    360,219    $ 0.32   $ 61,947    306,183     $ 0.20
                                                                   =========    =======    ======   ========    =======     ======

SIX MONTHS:
Basic earnings per common share:
Income before  extraordinary  charge and cumulative
  effect of a change in accounting principle ....................  $ 227,592    301,641    $ 0.75   $ 80,609    270,516     $ 0.30
Extraordinary charge, net of tax benefit ........................     (1,300)      --         --        --         --          --
Cumulative effect of a change in accounting principle,
  net of tax ....................................................      1,036       --         --        --         --          --
                                                                   ---------    -------    ------   --------    --------    ------
Net income ......................................................  $ 227,328    301,641    $ 0.75   $ 80,609    270,516     $ 0.30
                                                                   =========    =======    ======   ========    =======     ======
Common shares issuable upon exercise of stock options
  using treasury stock method ...................................                15,903                          15,923
                                                                                -------                         -------
Diluted earnings per common share:
Income before dilutive effect of certain convertible
  securities, extraordinary charge and cumulative effect
  of a change in accounting principle ...........................  $ 227,592    317,544    $ 0.72   $ 80,609    286,439     $ 0.28
Dilutive effect of certain convertible securities ...............     20,838     49,379     (0.04)     4,878     18,912        --
                                                                   ---------    -------    ------   --------    -------     ------
Income before  extraordinary  charge and cumulative effect
  of a change in accounting principle ...........................    248,430    366,923      0.68     85,487    305,351       0.28
Extraordinary charge, net of tax benefit ........................     (1,300)      --         --        --         --          --
Cumulative effect of a change in accounting principle,
  net of tax ....................................................      1,036       --         --        --         --          --
                                                                   ---------    -------    ------   --------    -------     ------
Net income ......................................................  $ 248,166    366,923    $ 0.68   $ 85,487    305,351     $ 0.28
                                                                   =========    =======    ======   ========    =======     ======


Unexercised  employee  stock  options to purchase  approximately  284.8 and 36.0
thousand  shares of the Company's  common stock during the six months ended June
30, 2001 and 2000, respectively, were not included in the computation of diluted
shares outstanding because such inclusion would have been anti-dilutive.

15.  Commitments and Contingencies

Capital Expenditures -- During the second quarter of 2001, the Company purchased
35 model 7FB and 11 model 7FA  gas-fired  turbines  from GE Power  Systems.  The
Company  expects to take  delivery of 5 turbines in 2002,  with the remainder of
the  contract to be filled by the end of 2005.  This brought the total number of
gas-fired  and steam  turbines on order to 304 with an  approximate  value of $9
billion.

16.  Subsequent Events

PG&E Bankruptcy  Proceedings -- On July 12, 2001, the U.S.  Bankruptcy Court for
the  Northern  District of  California  approved the  agreement  the Company had
entered  into with PG&E to modify and assume all of Capine's QF  contracts  with
PG&E. Under the terms of the agreement, the Company will continue to receive its
contractual capacity payments plus a five-year fixed energy price component that
averages 5.37 cents per  kilowatt-hour in lieu of the short run avoided cost. In
addition,  all past due  receivables  under the QF  contracts  were  elevated to
administrative  priority status and will be paid to the Company,  with interest,
upon the effective date of a confirmed plan of reorganization.

The FERC  Investigation  into California  Wholesale  Markets -- FERC 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 recommendations 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 hearing takes place,  based upon the
information  available  at this time,  the Company  does not  believe  that this
proceeding will result in a material  adverse effect on the Company's  financial
position or results of operations.

Other Subsequent Events

On May 15,  2001,  the Company  announced  that Canada Power  Holdings  Ltd. had
entered into a letter of intent to acquire and assume operations of two Canadian
power generating facilities from British  Columbia-based  Westcoast Energy, Inc.
for up to approximately  US$250 million,  plus the assumption of US$14.6 million
of debt.  The  Company  will gain a 100  percent  interest  in the  250-megawatt
natural  gas-fired  Island  Cogeneration  facility  located near Campbell River,
British  Columbia  on  Vancouver  Island,  and  a 50  percent  interest  in  the
50-megawatt  Whitby  Cogeneration  facility  located  in  Whitby,  Ontario.  The
acquisition  is expected to close in the third quarter of 2001 and is subject to
final documentation and various third party and regulatory approvals.

On July 5, 2001, the Company  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  562.5  million  pounds
sterling  (approximately  US$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  United
Kingdom power market.  The acquisition is expected to close in the third quarter
of this year and is subject to third party approvals.

On July 10, 2001, the Company  jointly  announced with PG&E  Corporation's  PG&E
National  Energy Group the  completion of the  acquisition  of the  500-megawatt
natural  gas-fired Otay Mesa  Generating  Project in San Diego County.  The PG&E
National Energy Group developed the combined-cycle  project,  which was licensed
by the California Energy Commission in April.  Construction is expected to begin
later this summer, and with completion scheduled for mid-2003,  the project will
be the first new power facility built in San Diego County in 30 years. Under the
terms of the sale,  Calpine  will build,  own and operate the  facility and PG&E
National  Energy  Group will  contract for up to 250  megawatts  of output.  The
balance of the output will be sold into the California  wholesale market through
CES.

On July 10, 2001, the Company  announced the acquisition of a majority  interest
of Michael Petroleum Corporation, a Houston, Texas-based natural gas exploration
and development company.  These reserves are located exclusively in South Texas.
The assets  include total proved  reserves of 204 bcfe and currently  produce 43
mmcfe/d.  In addition,  this transaction  provides an inventory of high quality,
low risk drilling  locations within a 94,000 acreage position in close proximity
to the Magic Valley Generating  Station and the Hidalgo Energy Center. The value
of the transaction is approximately $338.5 million, plus the assumption of $44.1
million of debt.  The  acquisition  is expected to close in the third quarter of
2001.

On August 1, 2001, the Company announced an agreement with Edison Mission Energy
for  the  purchase  of  the  remaining   fifty  percent  equity  interest  in  a
240-megawatt  combined-cycle  cogeneration  facility  located  in  Gordonsville,
Virginia for $35 million. The Gordonsville  facility provides electric power and
steam to Virginia Electric and Power Company and the Rapidan Service  Authority,
respectively,  under long-term contracts that expire in 2024. The acquisition is
expected to close in the third quarter of 2001.

ITEM 2. Management's  Discussion and Analysis of Financial Condition and Results
        of Operations.

Except for  historical  financial  information  contained  herein,  the  matters
discussed  in  this  quarterly   report  may  be  considered   "forward-looking"
statements  within the meaning of Section 27A of the  Securities Act of 1933, as
amended,  and Section 21E of the  Securities  Exchange Act of 1934,  as amended,
including  statements  regarding the intent,  belief or current  expectations of
Calpine  Corporation ("the Company") and its management.  You are cautioned that
any such forward-looking statements are not guarantees of future performance and
involve a number of risks and uncertainties  that could materially affect actual
results  such as, but not  limited to, (i)  changes in  government  regulations,
including  pending changes in California,  and  anticipated  deregulation of the
electric energy industry,  (ii) 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,
(iii)  cost  estimates  are  preliminary  and  actual  costs may be higher  than
estimated,  (iv) the assurance that the Company will develop  additional plants,
(v) a competitor's development of a lower-cost generating gas-fired power plant,
(vi) the risks  associated with marketing and selling power from power plants in
the newly competitive  energy market,  (vii) the risks associated with marketing
and  selling   combustion  turbine  parts  and  components  in  the  competitive
combustion  turbine parts market,  (viii) the risks associated with engineering,
designing and  manufacturing  combustion  turbine parts and components,  or (ix)
delivery and performance  risks  associated  with  combustion  turbine parts and
components   attributable  to  production,   quality   control,   suppliers  and
transportation. You are also cautioned that the California energy market remains
uncertain.  The Company's management is 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  the  Company;
however,  the Company  believes that a final  resolution of the situation in the
California energy market will not have a material adverse impact on the Company.
For example,  Pacific Gas and Electric Company ("PG&E"), which is in bankruptcy,
has recently  agreed with the Company to assume all of the Company's  Qualifying
Facility  contracts.  You are also referred to the other risks  identified  from
time to time in the Company's reports and registration statements filed with the
Securities and Exchange Commission.

Overview

Calpine is 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.  At August 13, 2001, we had  interests in 58 operating  power
plants representing 9,626 megawatts of net capacity.

On April 3, 2001, we announced that our affiliate,  Calpine Power America, L.P.,
was certified as a Retail Energy Provider in the Electric Reliability Council of
Texas  ("ERCOT").  This allows us to offer services to a full range of wholesale
and  retail  customers  in  Texas.  Calpine  Power  America  will  sell to large
industrials,  in addition to  municipalities,  cooperatives,  and investor-owned
utilities.  Additionally,  we received an ERCOT  certification to be a Qualified
Scheduling Entity ("QSE").  As a QSE, Calpine Power Management,  L.P. may act on
behalf of generators  and consumers in the region and would be  responsible  for
scheduling  the generation of energy  flowing to the  electricity  grid with the
ERCOT Independent System Operator.

On April 3, 2001, we acquired all of the common shares of WRMS Engineering, Inc.
("WRMS"),  a  California-based  engineering and  architectural  firm,  through a
stock-for-stock  exchange in which WRMS shareholders received a total of 151,176
shares of Calpine  common  stock.  The  aggregate  value of the  transaction  is
approximately $7.8 million,  including the assumed indebtedness of WRMS. WRMS is
expected to provide  services to support our c*Power unit, which provides highly
reliable, critical power to industrial and high tech customers.

On April 11, 2001, we acquired the  development  rights from Enron North America
for the 750-megawatt  natural gas-fired  Pastoria Energy Center planned for Kern
County, California. The project was licensed by the California Energy Commission
in December 2000.  Construction  began in June 2001 and commercial  operation is
scheduled for the summer of 2003.

On  April  17,  2001,  we  acquired  the   development   rights  from  Kirkland,
Washington-based  National Energy Systems  Company for the 248-megawatt  natural
gas-fired  Goldendale Energy Center planned for Goldendale,  Washington.  Energy
generated from the Goldendale  facility will be sold directly into the Northwest
Power Pool.  Construction  commenced in April 2001,  and energy  deliveries  are
scheduled to begin July 1, 2002.

On April 17, 2001, we acquired assets of The Bayless  Companies and its partners
with  reserves  located  in the  western  portion  of the San Juan  Basin in New
Mexico. Currently 35 wells produce approximately 6 million cubic feet equivalent
per day ("mmcfe/d"), 96 percent of which is natural gas.

On April 19, 2001,  we  announced  the purchase of 35 model 7FB and 11 model 7FA
gas-fired turbines from GE Power Systems. We will take delivery of 5 turbines in
2002, with the remainder of the contract to be filled by the end of 2005.

On April 19,  2001,  we acquired  all of the common  shares of Encal Energy Ltd.
("Encal"),  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 of our  subsidiary,  Calpine Canada
Holdings Ltd. A total of 16,603,633 Calpine common equivalent shares were issued
to Encal  shareholders  in exchange for their Encal common  stock.  Each Calpine
common  equivalent  share is exchangeable for one share of Calpine common stock.
The  aggregate  value of the  transaction  is  approximately  U.S. $1.1 billion,
including the assumed  indebtedness of Encal. This acquisition was accounted for
under the  pooling-of-interests  method.  With the  addition of Encal's  assets,
which currently produce  approximately 230 mmcfe per day, net of royalties,  our
net  production  is expected to increase to 390 mmcfe per day in North  America,
enough to fuel approximately 2,300 megawatts of our power fleet.

On April 25, 2001, through our wholly owned  financing  company,  Calpine Canada
Energy Finance ULC ("Energy  Finance"),  we completed a public  offering of $1.5
billion of 8 1/2% Senior  Notes Due 2008 priced at 99.768%.  These  senior notes
are fully and unconditionally guaranteed by us.

On April  30,  2001,  we  completed  the  sale of $1.0  billion  of  Zero-Coupon
Convertible  Debentures Due 2021 in a private  placement  under Rule 144A of the
Securities  Act of 1933.  The  securities  are  convertible  into Calpine common
shares  at a price of $75.35 at the  option of the  holder at any time.  Holders
have the right to require us to repurchase their debentures in 2002, 2004, 2006,
2008,  2011 and 2016 at a  specified  price in cash or our  common  stock at our
option,  except  in 2016 when the  repurchase  price  must be paid in cash.  The
debentures  are  redeemable  at the option of Calpine  after 2004 at a specified
price in cash or our  common  stock.  Proceeds  from the  offering  were used to
refinance certain debt, for working capital and for general corporate  purposes.
The  indenture  relating  to  these  securities  has not  been  filed  with  the
Securities and Exchange Commission at the date of this filing. We will furnish a
copy to the Securities and Exchange Commission upon request.

On May 2, 2001, we jointly  announced with Kinder Morgan Energy  Partners,  L.P.
plans to develop the Sonoran  Pipeline,  subject to a successful open season and
all other  approvals.  As proposed,  the Sonoran  Pipeline will be a 1,160-mile,
high-pressure  interstate  natural  gas  pipeline  from  the San  Juan  Basin in
northern New Mexico to markets in California.  The  interstate  pipeline will be
evaluated and developed in two phases, which will be subject to the jurisdiction
of the Federal Energy Regulatory  Commission ("FERC").  The first phase will run
from the San Juan Basin to the California border with the second phase extending
from the California border to the San Francisco Bay area. The first phase of the
pipeline is expected to be completed in the summer of 2003.

On May 9, 2001,  we  announced  that our  emergency  energy  proposal to the San
Francisco Public Utilities Commission was approved by the San Francisco Board of
Supervisors.  Under the terms of this contract, we will guarantee to provide San
Francisco  with 50 megawatts of  electricity  24  hours-a-day  for the next five
years starting July 1, 2001.

On May 15,  2001,  we  announced  that we  plan to build,  own and  operate a
1,030-megawatt  natural gas-fired electricity  generating facility to be located
in Berrien,  Michigan.  We entered into an agreement with Boston-based CME North
American  Merchant  Energy,  which had  initiated  development  efforts  for the
project  and will  continue to work with us as the project  moves  forward.  The
Berrien Energy Center is our first Michigan  development  project and commercial
operation is scheduled to begin in 2004.

On May 15, 2001,  we announced  that our wholly owned  subsidiary,  Canada Power
Holdings Ltd.,  entered into a letter of intent to acquire and assume operations
of  two  Canadian  power  generating  facilities  from  British   Columbia-based
Westcoast  Energy,  Inc.  for  up to  approximately  US$250  million,  plus  the
assumption of US$14.6 million of debt. We will own a 100 percent interest in the
250-megawatt  natural  gas-fired  Island  Cogeneration   facility  located  near
Campbell River,  British Columbia on Vancouver Island, and a 50 percent interest
in the 50-megawatt Whitby Cogeneration facility located in Whitby,  Ontario. The
acquisition  is expected to close in the third quarter of 2001 and is subject to
final documentation and various third party and regulatory approvals.

At the Annual Meeting of Stockholders on May 17, 2001, the stockholders  elected
Ann B.  Curtis  and  Kenneth  T. Derr as the Class II  Directors,  approved  the
amendment to the Company's Amended and Restated  Certificate of Incorporation to
increase the number of  authorized  shares of Common Stock from  500,000,000  to
1,000,000,000,   and  ratified  the   appointment  of  Arthur  Andersen  LLP  as
independent accountants for the fiscal year ending December 31, 2001.

On May 23, 2001,  we,  together  with San  Francisco-based  Bechtel  Enterprises
Holdings,  Inc.,  filed an  Application  For  Certification  with the California
Energy  Commission  ("CEC")  for the  proposed  Russell  City Energy  Center,  a
600-megawatt,  natural gas-fired,  combined-cycle  electric  generating facility
located in Hayward,  California.  The filing marks the beginning of an extensive
CEC licensing  process  required to build and operate an electricity  generating
facility in California.  The filing included a request for expedited review that
would reduce the  licensing  review  process  period from 12 months to 6 months.
Based upon successful licensing of the project,  construction could begin in the
summer of 2002,  with  commercial  operation by the summer of 2004.  The Russell
City Energy Center would provide electricity for Hayward, western Alameda County
and the San Francisco Peninsula.

On June 7, 2001, we jointly  announced with Kinder Morgan Energy Partners,  L.P.
that we received  significant  interest in the proposed Sonoran Pipeline project
during the open seasons that closed on June 1, 2001.  More than 1 billion  cubic
feet ("Bcf") per day of binding precedent agreements and non-binding expressions
of interest were received for Phase One of Sonoran,  and another 1.5 Bcf per day
of non-binding  commitments  and expressions of interest were received for Phase
Two of the project.

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.

On June 8, 2001,  we announced  plans to build,  own and operate a  600-megawatt
electric  generating  facility to be located in southwestern  Riverside  County,
California.  The proposed  Inland  Empire  Energy Center will feed directly into
Southern  California  Edison's  power grid and is  intended to serve the rapidly
growing  counties of Riverside and San Bernardino.  Construction is scheduled to
begin in mid-2002, with commercial operation targeted for mid-2004.

On June 20, 2001, we jointly announced with Bechtel Enterprises  Holdings,  Inc.
that the Presiding Members' Proposed Decision, released by the California Energy
Commission on June 18, 2001,  recommends  that the full  five-member CEC approve
the 600-megawatt,  gas-fired Metcalf Energy Center.  The CEC's final decision is
expected in the third quarter 2001.

On June 28, 2001, we announced that  Florida's  Power Plant Siting Board granted
final state  regulatory  approval for the proposed  529-megawatt  Osprey  Energy
Center, to be located in Auburndale, Florida. We are the first independent power
producer  to  receive  approval  of  a  Site  Certification  Application  for  a
large-scale  combined-cycle  generating  facility under Florida's  complex Power
Plant Siting Act.

Transactions  Announced or  Consummated  Subsequent to June 30, 2001, and Recent
Developments

On July 2, 2001, we announced  commercial operation of our Sutter Energy Center,
located near Yuba City,  California.  The Sutter Energy Center,  the first major
combined-cycle  facility built in California in over a decade,  is providing 540
megawatts of  electricity  to California on a 24 hours-a-day,  seven days-a-week
availability.

On July 5, 2001, we announced that we had signed a binding  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 562.5 million
pounds sterling (US$800 million).  The Saltend Energy Centre entered  commercial
operations in November 2000 and is one of the largest natural gas-fired electric
power  generating  facilities in England.  As a cogeneration  facility,  Saltend
Energy Centre provides  electricity and steam for BP Chemical's Hull Works plant
under the terms of a 15-year  agreement.  The balance of the  plant's  output is
sold into the deregulated United Kingdom power market. The facility incorporates
natural  gas-fired  combustion  turbines in  combination  with steam turbines to
optimize fuel efficiency.

On July 9, 2001, we announced initial operation of our Los Medanos Energy Center
in  Pittsburg,  California.  This  555-megawatt  facility  is the  second  major
combined-cycle  facility to be licensed and built in California in over a decade
and will provide electricity on a 24 hours-a-day, 7 days-a-week availability. As
a cogeneration  facility, the project also delivers electricity and steam to USS
POSCO for use in industrial processing.

On July 10, 2001, we jointly  announced  with PG&E  Corporation's  PG&E National
Energy Group that we had completed the acquisition of the  500-megawatt  natural
gas-fired Otay Mesa  Generating  Project in San Diego County.  The PG&E National
Energy Group  developed the  combined-cycle  project,  which was licensed by the
California Energy  Commission in April.  Construction is expected to begin later
this summer, and with completion scheduled for mid-2003, the project will be the
first new power facility built in San Diego County in 30 years.  Under the terms
of the sale,  we will  build,  own and operate the  facility  and PG&E  National
Energy Group will contract for up to 250 megawatts of output. The balance of the
output will be sold into the California wholesale market through our subsidiary,
Calpine Energy Services, LP ("CES").

On July 10, 2001, we announced the acquisition of a majority interest of Michael
Petroleum  Corporation,  a Houston,  Texas-based  natural  gas  exploration  and
development company.  These reserves are located exclusively in South Texas. The
assets  include  total  proved  reserves  of 204 bcfe and  currently  produce 43
mmcfe/d.  In addition,  this transaction  provides an inventory of high quality,
low risk drilling  locations within a 94,000 acreage position in close proximity
to the Magic Valley Generating  Station and the Hidalgo Energy Center. The value
of the transaction is approximately  $338.5 million plus the assumption of $44.1
million of debt.  The  acquisition  is expected to close in the third quarter of
2001.

On July 11, 2001, we jointly announced with Bechtel Enterprises  Holdings,  Inc.
that the Application for Certification of the Russell City Energy Center met the
California Energy Commission's data adequacy requirements.  The project was also
approved  for  expedited  review,  making the  600-megawatt  Russell City Energy
Center  the first  combined-cycle  California  energy  project to meet the CEC's
stringent qualifications for a six-month review.

On July 11, 2001, we announced plans for the  180-megawatt  Los Esteros Critical
Energy  Facility.  Located in San Jose,  California,  our c*Power  program  will
supply U.S. Data Port's  planned San Jose Internet  Campus with highly  reliable
critical  power and  ancillary  services.  Construction  of the facility will be
accelerated so that in advance of the initiation and completion of the U.S. Data
Port project we will be able to provide 180  megawatts  of peaking  capacity and
energy to the California  Department of Water  Resources  under a power contract
beginning May 1, 2002 and continuing through April 30, 2005.

On July 16, 2001, we announced  that Michael  Polsky had resigned from the Board
of Directors  and as an officer of the Company.  On July 17, 2001,  we announced
the appointment of Gerald Greenwald to the Board of Directors.

On July 17, 2001, we announced plans to build a 900-megawatt  natural  gas-fired
facility called the Sherry Energy Center in Wood County,  Wisconsin.  We entered
into two separate  10-year  agreements to supply 225 megawatts and 141 megawatts
of electric  capacity and energy from the plant to the Wisconsin  Electric Power
Company  and  the  Wisconsin  Public  Service  Corporation,   respectively.  The
remaining  output will be sold to other Wisconsin  utilities and wholesale power
purchasers. Construction is expected to begin during the second quarter of 2002,
with  commercial  operation  of the  simple-cycle  units  slated  for the second
quarter of 2003, and commercial  operation of the combined-cycle  plant expected
in the second quarter of 2004.

On July 17, 2001, we signed two 5-year  agreements to deliver 1,000 megawatts of
power to Reliant Energy Services,  Inc., a unit of Reliant  Resources,  Inc. The
contracts  will begin with the  official  start date of  deregulation  in ERCOT,
which is expected to be January 1, 2002. We will serve  Reliant's  load from our
ERCOT system of natural  gas-fired  power plants  totaling  approximately  2,700
megawatts of capacity.

On July 18,  2001,  we jointly  announced  with Shell  Energy  Services  Company
L.L.C.,  a wholly  owned  subsidiary  of Shell Oil  Company,  the  signing of an
exclusive  energy  agreement.  We will be the exclusive  provider of up to 3,000
megawatts  of  electricity  to  Shell  Energy,  a  retail  electricity  provider
participating in the Texas Electric Choice pilot program in the ERCOT. Beginning
January 1, 2002, we will provide  capacity,  energy,  and ancillary  services to
Shell for the ERCOT  market in  accordance  with the  5-year  full  requirements
contract.

On July  19,  2001,  we  announced  a  ten-year  agreement  for the  sale of 100
megawatts  of power to  Excelon  Generation's  Power  Team.  This  power will be
produced by the Morris Power Plant located just southwest of Chicago, Illinois.

On August 1, 2001, we announced an agreement  with Edison Mission Energy for the
purchase of the  remaining  fifty  percent  equity  interest  in a  240-megawatt
combined-cycle  cogeneration facility located in Gordonsville,  Virginia for $35
million. The Gordonsville facility provides electric power and steam to Virginia
Electric  and Power  Company and the Rapidan  Service  Authority,  respectively,
under long-term contracts that expire in 2024.

On August 9, 2001, we announced  plans to purchase 27 steam  turbine  generators
from Siemens  Westinghouse.  We expect turbine  deliveries to begin in September
2002,  with full  inventory in place by February  2005.  Combined,  the turbines
represent up to 5,400 megawatts of generating capacity.

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 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 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  eleven  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, we had recorded  approximately  $266 million in accounts  receivable  with
PG&E under our QF contracts,  plus $69 million in notes  receivable  not yet due
and  payable.  As of June 30,  2001,  we had  recorded  $292 million in accounts
receivable and $84 million in notes  receivable not yet due and payable.  We are
currently selling power to PG&E pursuant to our long-term QF contracts, and PG&E
is paying on a current basis for these  purchases  since its bankruptcy  filing.
With respect to the receivables recorded under these contracts,  we announced on
July 6, 2001,  that we had entered into a binding  agreement with PG&E to modify
all of our QF contracts with 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,
we will  continue  to receive our  contractual  capacity  payments  under the QF
contracts,  plus a five-year  fixed energy price  component  that  averages 5.37
cents per kilowatt-hour in lieu of the short run avoided cost. 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.  We  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  provides 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  Energy
Regulatory 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.

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  hours-a-day,  7 days-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 the 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 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  10-year,  $5.2
billion  fixed-price  contract,  we 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, we 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 -- 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 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
seven percent.  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.

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  recommendations
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 hearing
takes  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.

Selected Operating Information

Set forth below is certain selected  operating  information for our power plants
and steam  fields,  for which  results are  consolidated  in our  statements  of
operations.  Results  vary for the three and six  months  ended  June 30,  2001,
respectively,  as compared  to the same  periods in 2000,  primarily  due to the
consolidation   of  acquisitions,   favorable  energy  pricing,   and  increased
production.  Electricity  revenue is composed of fixed capacity payments,  which
are not related to production,  and variable energy payments,  which are related
to production. Capacity revenue includes, besides traditional capacity payments,
other revenues such as reliability must run and ancillary service revenues.  The
information  set forth under thermal and other revenue  consists of host thermal
sales and other revenue.


                                                Three Months Ended June 30,    Six Months Ended June 30,
                                                ---------------------------    -------------------------
                                                   2001            2000            2001          2000
                                                ----------      ----------     -----------    ----------
                                                                                  
Electricity and steam ("E & S") revenues:
   Energy (1) ...............................   $  354,366      $  199,950     $   806,552    $  325,329
   Capacity .................................   $  147,064      $   89,318     $   245,323    $  144,802
   Thermal and other ........................   $   32,157      $   20,738     $    74,205    $   34,696
Megawatt hours produced .....................    7,877,505       4,678,000      15,116,704     9,059,189
Average energy price per megawatt hour ......   $    44.98      $    42.74     $     53.36    $    35.91

(1)  Includes spread on sales of purchased power.


Megawatt hours produced at the power plants  increased 68% and 67% for the three
and six months  ended June 30,  2001,  as compared to the same  periods in 2000.
This was primarily due to the addition of power plants that were either acquired
or commenced commercial operation subsequent to June 30, 2000.

Results of Operations

Three Months Ended June 30, 2001, Compared to Three Months Ended June 30, 2000

Revenue -- Total  revenue  increased  to $1,612.9  million for the three  months
ended June 30, 2001, compared to $417.2 million for the same period in 2000.

     Electric  generation  and  marketing  revenue  increased  268% to  $1,257.3
     million in 2001 compared to $341.6  million in 2000.  Approximately  $192.9
     million of the $915.7  million  variance was due to  electricity  and steam
     sales,  which increased due to our growing  portfolio and favorable  energy
     pricing.  Our  revenue for the period  ended June 30,  2001,  includes  the
     consolidated results of fourteen additional  facilities that we acquired or
     completed  construction on subsequent to June 30, 2000. Our power marketing
     revenue (sales of purchased  power) grew by $654.2 million due to increased
     price hedging and optimization  activity during the three months ended June
     30, 2001. We also recognized $68.4 million in mark-to-market gains on power
     derivatives.

     Oil and gas production and marketing revenue increased to $343.0 million in
     2001 compared to $69.7 million in 2000. The majority of the increase is due
     to marketing  activities relating to purchased gas sold to third parties in
     hedging,  balancing and related transactions.  Additionally,  approximately
     $54.4 million of the variance relates to increased production and commodity
     prices from sales to third  parties  from our reserves in Canada and in the
     United States.

     Income from unconsolidated  investments in power projects decreased to $1.6
     million in 2001  compared to $4.8  million  during  2000.  The  variance is
     primarily due to the contractual  reduction in distributions from the Sumas
     Power Plant of approximately $2.6 million.

     Other  revenue  increased to $10.9 million in 2001 compared to $1.1 million
     in 2000. This increase is due primarily to $4.8 million  recognized in 2001
     from our custom turbine parts manufacturing subsidiary, Power Systems Mfg.,
     LLC,  which was  acquired in December  2000,  and $2.8  million in interest
     income on loans to power projects.

Cost of  revenue  -- Cost of  revenue  increased  to  $1,308.6  million  in 2001
compared to $270.5 million in 2000. Approximately $623.7 million of the $1,038.1
million  increase  relates to the cost of power purchased by our energy services
organization.  Similarly,  oil and gas production and marketing  expense grew by
$220.5  million,  largely  due to $218.3  million of expense for the cost of gas
purchased by the energy services  organization,  compared to $7.5 million in the
second quarter of 2000. Fuel expense increased 120%, from $104.0 million in 2000
to $228.4 million in 2001, due to a 68% increase in megawatt hours generated and
increased fuel price.  Depreciation expense increased by 42%, from $50.7 million
in the second  quarter of 2000 to $72.1  million in the second  quarter of 2001,
due to fourteen  additional power facilities in consolidated  operations at June
30, 2001,  as compared to the same period in 2000,  and due to $14.4  million in
higher  depreciation  and depletion in our oil and gas  operating  subsidiaries.
Operating lease expense increased by $16.8 million due to leases entered into or
acquired  in  connection  with  our  Pasadena,   Tiverton,   Rumford,  and  KIAC
facilities,  all of which were  either  entered  into during or after the second
quarter of 2000.

General  and  administrative  expense  --  General  and  administrative  expense
increased  173% to $50.5  million for the three months  ended June 30, 2001,  as
compared  to  $18.5  million  for the same  period  in 2000.  The  increase  was
attributable  to continued  growth in personnel and  associated  overhead  costs
necessary  to support the  overall  growth in our  operations  and due to recent
acquisitions, including power facilities and natural gas operations.

Nonrecurring  merger  costs -- We incurred  approximately  $35.6  million in the
three  months  ended June 30,  2001,  in  connection  with the merger with Encal
Energy  Limited on April 19, 2001. The  transaction  was accounted for under the
pooling-of-interests  method and,  accordingly,  all transaction costs have been
expensed as incurred and all periods presented have been restated to reflect the
transaction.

Interest  expense -- Interest  expense  increased  138% to $43.3 million for the
three  months  ended June 30,  2001,  from $18.2  million for the same period in
2000. Interest expense increased primarily due to the issuances of $1.15 billion
of Senior Notes Due 2011 in February 2001 and of $1.5 billion of Energy  Finance
Senior Notes Due 2008 in April 2001. The associated incremental interest expense
was partially  offset by interest  capitalized  in  connection  with our growing
construction portfolio.

Distributions on trust preferred  securities -- Distributions on trust preferred
securities  increased  69% to $15.4  million for the three months ended June 30,
2001,  compared  to $9.1  million  for the  corresponding  months  in 2000.  The
increase  is  attributable  to  the  issuance  of  additional   trust  preferred
securities in August 2000.

Interest  income -- Interest  income  increased  to $20.5  million for the three
months  ended June 30,  2001,  compared  to $5.6  million for the same period in
2000.  This  increase is due to the  significantly  higher cash balances that we
have  maintained,  primarily from senior notes issuances and the issuance of our
convertible securities in April 2001.

Other  income -- Other  income  increased  to $3.3  million in 2001 from  $(0.2)
million in 2000  primarily due to foreign  currency gains relating to Encal debt
that was repaid during the quarter.

Provision  for income taxes -- The effective  income tax rate was  approximately
39.1% and 41.1% for the three months ended June 30, 2001 and 2000, respectively.
The decrease in rates was due to the lower  contribution of Canadian  operations
(which  are  subject  to  higher  statutory  tax  rates)  due  partially  to the
recognition of nonrecurring merger costs.

Extraordinary  charge,  net -- The $1.3 million charge  relating to write off of
unamortized  deferred  financing  costs  was a result of the  repayment  of $105
million 9 1/4% Senior Notes Due 2004.

Six Months Ended June 30, 2001, Compared to Six Months Ended June 30, 2000

Revenue -- Total revenue  increased to $2,952.6 million for the six months ended
June 30, 2001, compared to $702.4 million for the same period in 2000.

     Electric  generation and marketing revenue increased to $2,307.4 million in
     2001 compared to $547.7  million in 2000.  Approximately  $594.3 million of
     the $1,759.7 million variance was due to electricity and steam sales, which
     increased due to our growing  portfolio and favorable  energy pricing.  Our
     revenue  for the period  ended June 30,  2001,  includes  the  consolidated
     results of fourteen  additional  facilities  that we acquired or  completed
     construction on subsequent to June 30, 2000. Our power marketing activities
     contributed an additional  $1,095.7  million due to increased price hedging
     and  optimization  activity  during the six months ended June 30, 2001.  We
     also recognized $69.7 million in mark-to-market gains on power derivatives.

     Oil and gas production and marketing revenue increased to $628.9 million in
     2001 compared to $136.6  million in 2000.  Approximately  $339.5 million of
     the increase is due to marketing  activities relating to purchased gas sold
     to  third  parties  in  hedging,   balancing   and  related   transactions.
     Additionally,  approximately  $152.7  million  of the  variance  relates to
     increased  production  and commodity  prices in sales to third parties from
     reserves acquired in Canada and in the United States.

     Income from unconsolidated  investments in power projects decreased to $2.2
     million in 2001  compared to $14.6  million  during  2000.  The variance is
     primarily due to the contractual  reduction in distributions from the Sumas
     Power Plant of  approximately  $9.7  million.

     Other  revenue  increased to $14.2 million in 2001 compared to $3.4 million
     in 2000. This increase is due primarily to $6.4 million  recognized in 2001
     from our custom turbine parts manufacturing subsidiary, Power Systems Mfg.,
     LLC,  and a $2.8  million  increase  in  interest  income on loans to power
     projects.

Cost of  revenue  -- Cost of  revenue  increased  to  $2,372.8  million  in 2001
compared  to $484.6  million  in 2000.  Approximately  $1,068.7  million  of the
$1,888.2  million  increase relates to the cost of power purchased by our energy
services organization.  Similarly,  oil and gas production and marketing expense
grew by $343.0 million,  largely due to a $321.7 million increase in expense for
the cost of gas purchased and resold by the energy services  organization.  Fuel
expense  increased  173%, from $177.7 million in 2000 to $485.4 million in 2001,
due to a 67% increase in megawatt hours generated and a significant  increase in
fuel price.  Depreciation  expense  increased by 51%,  from $95.8 million in the
first six months of 2000 to $144.2  million in the first six months of 2001, due
to additional  power facilities in operation in 2001 and due to $30.2 million in
higher  depreciation  and depletion in our oil and gas  operating  subsidiaries.
Operating lease expense increased by $34.3 million due to leases entered into or
acquired in connection with our Pasadena, Tiverton, Rumford, and KIAC facilities
during and subsequent to the period ended June 30, 2000.

General  and  administrative  expense  --  General  and  administrative  expense
increased  202% to $86.6  million  for the six months  ended June 30,  2001,  as
compared  to  $28.7  million  for the same  period  in 2000.  The  increase  was
attributable  to continued  growth in personnel and  associated  overhead  costs
necessary  to support the  overall  growth in our  operations  and due to recent
acquisitions, including power facilities and natural gas operations.

Nonrecurring merger costs -- We incurred  approximately $41.6 million in the six
months  ended June 30,  2001,  in  connection  with the merger with Encal Energy
Limited  on April  19,  2001.  The  transaction  was  accounted  for  under  the
pooling-of-interests  method and,  accordingly,  all transaction costs have been
expensed as incurred and all periods presented have been restated to reflect the
transaction.

Interest expense -- Interest expense  increased 58% to $63.3 million for the six
months  ended June 30,  2001,  from $40.0  million  for the same period in 2000.
Interest  expense  increased  primarily due to the issuances of $1.15 billion of
Senior  Notes Due 2011 in February  2001 and of $1.5  billion of Energy  Finance
Senior Notes Due 2008 in April 2000. The associated incremental interest expense
was partially  offset by interest  capitalized  in  connection  with our growing
construction portfolio.

Distributions on trust preferred  securities -- Distributions on trust preferred
securities  increased  90% to $30.6  million  for the first  six  months in 2001
compared to $16.1 million for the corresponding  months in 2000. The increase is
attributable to the issuance of additional trust preferred  securities in August
2000, as well as a full period of distributions on the January 2000 offering and
the  subsequent  exercise  of the  purchasers'  option  to  purchase  additional
securities.

Interest income -- Interest income increased to $39.9 million for the six months
ended June 30, 2001, compared to $13.2 million for the same period in 2000. This
increase is due primarily to the significantly higher cash balances that we have
maintained as a result of our senior notes and convertible  securities offerings
during the second quarter of 2001.

Other income -- Other income increased to $9.0 million in 2001 from $0.4 million
in 2000  primarily  due to a gain on the  sale of our  interests  in the  Elwood
development  project and the Bayonne  facility  and  related  contingent  income
recognized as earned thereafter.

Provision  for income taxes -- The effective  income tax rate was  approximately
41.1% and 41.2% for the six months ended June 30, 2001 and 2000, respectively.

Extraordinary charge, net -- The $1.3 million charge was a result of writing off
unamortized  deferred financing costs related to the repayment of $105 million 9
1/4% Senior Notes Due 2004.

Cumulative  effect of a change in  accounting  principle  -- The $1.0 million of
additional  income, net of tax, is due to the adoption of Statement of Financial
Accounting  Standards ("SFAS") No. 133,  "Accounting for Derivative  Instruments
and  Hedging  Activities,"  amended  by SFAS No. 137 and SFAS No. 138 ("SFAS No.
133").

Liquidity and Capital Resources

To date, we have obtained cash from our operations;  borrowings under our credit
facilities  and  other  working  capital  lines;  sales of debt,  equity,  trust
preferred  securities  and  convertible  debentures;  and proceeds  from project
financing.  We  utilized  this  cash  to  fund  our  operations,   service  debt
obligations,   fund   acquisitions,   develop  and  construct  power  generation
facilities,  finance capital  expenditures and meet our other cash and liquidity
needs.

Outlook

Our strategy is to continue our rapid growth by  capitalizing on the significant
opportunities in the power industry,  primarily  through our active  development
and acquisition programs. In pursuing our proven growth strategy, we utilize our
extensive  management  and technical  expertise 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 acquisition,
operations,  risk management 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 both  baseload and peaking
capacity at our existing highly efficient, low-cost, gas-fired power plants that
replace old and  inefficient  generating  facilities and meet the demand for new
generation.  Our strategy is to develop  power  plants in  strategic  geographic
locations  that  enable us to  leverage  existing  power  generation  assets and
operate the power plants as integrated electric generation systems.  This allows
us  to  achieve  significant   operating  synergies  and  efficiencies  in  fuel
procurement, power marketing and operation and maintenance.

At August 13,  2001,  we had 27 projects  under  construction,  representing  an
additional 14,932 megawatts of net capacity. Included in these 27 projects are 4
project  expansions,  representing  735 megawatts of net capacity.  We have also
announced plans to develop 29 additional power generation projects, representing
a net capacity of 16,618  megawatts.  Included in these 29 development  projects
are 5 expansion projects representing 592 megawatts.

Acquisition  of power  plants -- Our  strategy  is to acquire  power  generating
facilities that meet our stringent  acquisition criteria and provide significant
potential  for  revenue,  cash flow and  earnings  growth,  and that provide the
opportunity  to  enhance  the  operating  efficiencies  of the  plants.  We have
significantly  expanded and diversified our project  portfolio  through numerous
acquisitions of power generation facilities.

Enhance  the  performance  and  efficiency  of  existing  power  projects  -- We
continually  seek to maximize the power  generation  potential of our  operating
assets and minimize our operation and  maintenance  expense and fuel cost.  This
will  become  even  more  significant  as  our  portfolio  of  power  generation
facilities  expands to 81 power plants with a net capacity of 24,558  megawatts,
after  completion  of our projects  currently  under  construction.  We focus on
operating our plants as an integrated system of power generation,  which enables
us to  minimize  costs and  maximize  operating  efficiencies.  We believe  that
achieving  and  maintaining  a low  cost  of  production  will  be  increasingly
important to compete effectively in the power generation industry.

Risk Factors

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  provides QFs the option to
elect to receive  energy  payments  based on the PX market  clearing  price.  In
mid-2000,  our QF facilities elected this option and were paid based upon the 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  Energy
Regulatory 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.

FERC Investigation  into California  Wholesale Markets -- 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 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
seven percent.  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.

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  recommendations
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 hearing
takes  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.

Financial Market Risks

Short-term  investments -- As of June 30, 2001, we had short-term investments of
$740.8  million.   These  short-term   investments   consist  of  highly  liquid
investments with maturities less than three months.  We have the ability to hold
these investments to maturity, and as a result, we would not expect the value of
these  investments to be affected to any  significant  degree by the effect of a
sudden change in market interest rates.

Interest rate swaps -- From time to time,  we use interest rate swap  agreements
to mitigate our exposure to interest rate  fluctuations.  We do not use interest
rate swap  agreements for speculative or trading  purposes.  The following table
summarizes the fair market value of our existing  interest rate swap  agreements
as of June 30, 2001 (dollars in thousands):


                            Notional      Weighted
                           Principal       Average           Fair
     Maturity Date           Amount     Interest Rate    Market Value
     -------------         ---------    -------------    ------------
                                                
2001...................    $  71,000         7.4%        $     (72)
2007...................       38,150         8.0            (3,907)
2007...................       38,150         8.0            (3,889)
2007...................       29,757         7.9            (3,146)
2007...................       29,757         7.9            (3,131)
2009...................       15,000         6.9              (709)
2011...................       55,742         6.9            (2,611)
2012...................      120,078         6.5            (3,273)
2014...................       72,334         6.7            (2,815)
2015...................       22,500         7.0            (1,278)
2018...................       17,500         7.0            (1,055)
                           ---------         ----        ---------
         Total.........    $ 509,968         7.1%        $ (25,886)
                           =========         ====        =========


Energy price fluctuations -- We enter into derivative  commodity  instruments to
reduce our exposure to the impact of price fluctuations,  primarily  electricity
and natural  gas prices.  All  transactions  are subject to our risk  management
policy  which  prohibits  positions  that exceed  production  capacity  and fuel
requirements.  Derivative  commodity  instruments  are  accounted  for under the
requirements of SFAS No. 133.

The fair value of outstanding derivative commodity instruments and the change in
fair value that would be expected  from a ten percent  adverse  price change are
shown in the table below (in thousands):


                                                       Change in Fair
                                                         Value From
                                                         10% Adverse
                                     Fair Value         Price Change
                                     ----------         ------------
                                                   
At June 30, 2001
     Electricity.................    $  595,850          $ (204,773)
     Natural gas.................      (294,840)           (105,763)
                                     ----------          ----------
         Total...................    $  301,010          $ (310,536)
                                     ===========         ==========


Derivative  commodity  instruments  included in the table are those  included in
Note 3 to the Consolidated  Condensed  Financial  Statements.  The fair value of
derivative commodity instruments included in the table is based on present value
adjusted  quoted market prices of  comparable  contracts.  During the six months
ended June 30, 2001,  significant  electricity price volatility  occurred in the
western  United  States.  The fair  value of  derivative  commodity  instruments
includes  the  effect  of  increased  power  prices  versus  our  forward  sales
commitments.  Derivative commodity instruments offset physical positions exposed
to the cash market.  None of the offsetting  physical  positions are included in
the above table.

Price  changes  were  calculated  by  assuming an  across-the-board  ten percent
adverse price change regardless of term or historical  relationship  between the
contract price of an instrument and the underlying commodity price. In the event
of an actual  ten  percent  change in prompt  month  prices,  the fair  value of
Calpine's  derivative  portfolio would typically  change less than that shown in
the table due to lower volatility in out-month prices.

ITEM 3.  Quantitative and Qualitative Disclosures About Market Risk.

See "Financial Market Risks" in ITEM 2.

PART II.  OTHER INFORMATION

ITEM 2.  Change in Securities and Use of Proceeds.

On April  30,  2001,  we  completed  the  sale of $1.0  billion  of  Zero-Coupon
Convertible  Debentures Due 2021 in a private  placement  under Rule 144A of the
Securities  Act of 1933.  The  securities  are  convertible  into Calpine common
shares  at a price of $75.35 at the  option of the  holder at any time.  Holders
have the right to require us to repurchase their debentures in 2002, 2004, 2006,
2008,  2011 and 2016 at a specified price in cash or Calpine common stock at our
option,  except  in 2016 when the  repurchase  price  must be paid in cash.  The
debentures  are  redeemable  at the option of Calpine  after 2004 at a specified
price in cash or Calpine common stock.

ITEM 4.  Submission of Matters to a Vote of Security Holders.

Our Annual  Meeting  of  Stockholders  was held on May 17,  2001,  (the  "Annual
Meeting") in Boston,  Massachusetts.  At the Annual  Meeting,  the  stockholders
voted on the following matters: (i) the proposal to elect two Class II Directors
to the Board of Directors for a term of three years  expiring in 2004,  (ii) the
proposal  to  amend  the   Company's   Amended  and  Restated   Certificate   of
Incorporation  to increase the number of authorized  shares of Common Stock, par
value $.001 per share ("Common Stock"),  from 500,000,000 to 1,000,000,000;  and
(iii)  the  proposal  to  ratify  the  appointment  of  Arthur  Andersen  LLP as
independent  accountants for the Company for the fiscal year ending December 31,
2001. The stockholders elected  management's  nominees as the Class II Directors
in an uncontested election,  approved the amendment to the Company's Amended and
Restated  Certificate  of  Incorporation  to increase  the number of  authorized
shares of Common  Stock from  500,000,000  to  1,000,000,000,  and  ratified the
appointment of independent accountants by the following votes, respectively:

     (i)  Election of Ann B.  Curtis and  Kenneth T. Derr as Class II  Directors
          for a three-year  term expiring  2004,  250,888,564  FOR and 2,555,356
          ABSTAIN,

     (ii) Amendment  to  the  Company's  Amended  and  Restated  Certificate  of
          Incorporation  to increase the authorized  shares of Common Stock from
          500,000,000 to 1,000,000,000, 226,837,920 FOR, 25,790,692 AGAINST, and
          815,308 ABSTAIN, and

     (iii)Ratification  of the appointment of Arthur Andersen LLP as independent
          accountants for the fiscal year ending December 31, 2001,  240,859,017
          FOR, 11,784,745 AGAINST, and 800,158 ABSTAIN.

The  three-year  terms of Class III and Class I  Directors  continued  after the
Annual  Meeting  and will expire in 2002 and 2003,  respectively.  The Class III
Directors include Peter Cartwright,  Michael P. Polsky, and Susan C. Schwab. The
Class I  Directors  are  Jeffrey E.  Garten,  George J.  Stathakis,  and John O.
Wilson.

Subsequent to the Annual  Meeting,  on July 16, 2001, we announced  that Michael
Polsky had resigned from the Board of Directors.  On July 17, 2001, we announced
the appointment of Gerald Greenwald to the Board of Directors.


ITEM 6.  Exhibits and Reports on Form 8-K.

(a)  Exhibits

The following exhibits are filed herewith unless otherwise indicated:


   Exhibit
   Number         Description
   -------        -----------
               
     2.1          Combination  Agreement,  dated as of February 7, 2001,  by and
                  between Calpine Corporation and Encal Energy Ltd.

    *2.2          Amending  Agreement to  the Combination Agreement, dated as of
                  March 16, 2001, between  Calpine Corporation  and Encal Energy
                  Ltd. (a)

     2.3          Form  of  Plan  of  Arrangement  Under  Section  186  of   the
                  Business Corporations  Act  (Alberta) (included  as  Exhibit A
                  to Exhibit  2.1) Involving and  Affecting  Encal  Energy  Ltd.
                  and the Holders of its Common Shares and Options

    *3.1          Amended  and Restated  Certificate of Incorporation of Calpine
                  Corporation (b)

    *3.2          Certificate of Correction of Calpine Corporation (c)

    *3.3          Certificate of Amendment of Amended and  Restated  Certificate
                  of Incorporation of Calpine Corporation (d)

    *3.4          Certificate of Designation of Series A Participating Preferred
                  Stock of Calpine Corporation (c)

    *3.5          Amended  Certificate  of Designation of Series A Participating
                  Preferred Stock of Calpine Corporation (c)

    *3.6          Amended  Certificate of Designation  of Series A Participating
                  Preferred Stock of Calpine Corporation (d)

     3.7          Certificate of Designation of Special Voting  Preferred  Stock
                  of Calpine Corporation

    *3.8          Amended and Restated By-laws of Calpine Corporation (e)

     4.1          Form of Exchangeable  Share Provisions and Other Provisions to
                  Be  Included  in the Articles of Calpine  Canada Holdings Ltd.
                  (included as Exhibit B to Exhibit 2.1)

     4.2          Form of Support  Agreement  between  Calpine  Corporation  and
                  Calpine Canada Holdings Ltd. (included as Exhibit C to Exhibit
                  2.1)

    *4.3          Indenture  dated  as  of  August  10,  2000,  between  Calpine
                  Corporation and Wilmington Trust Company, as Trustee (f)

    *4.4          First  Supplemental  Indenture dated as of September 28, 2000,
                  between  Calpine Corporation  and Wilmington Trust Company, as
                  Trustee (g)

    *4.5          Indenture dated as of April 25, 2001,  between  Calpine Canada
                  Energy Finance ULC and Wilmington Trust Company, as Trustee (h)

    *4.6          Guarantee  Agreement  dated  as  of April 25, 2001, by Calpine
                  Corporation as guarantor of debt securities of Calpine  Canada
                  Energy Finance ULC (h)

     9.1          Form of Voting and Exchange Trust Agreement  between   Calpine
                  Corporation,  Calpine  Canada  Holdings  Ltd.  and CIBC Mellon
                  Trust  Company, as  Trustee (included  as Exhibit D to Exhibit
                  2.1)

    10.1          Amended  and Restated  Credit  Agreement, dated as of February
                  15, 2001, among  Calpine Construction Finance  Company,  L.P.,
                  The  Bank of  Nova  Scotia, as  Administrative  Agent, and the
                  Banks  party  thereto (i)

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

*   Incorporated by reference.

     (a)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-3/A (File No. 333-56712).

     (b)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-3 (File No. 333-40652).

     (c)  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.

     (d)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-3 (File No. 333-66078).

     (e)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-1 (File No. 333-07497).

     (f)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-3/A (File No. 333-72583).

     (g)  Incorporated  by reference to Calpine  Corporation's  Annual Report on
          Form 10-K dated  December  31,  2000 and filed on March 15, 2001 (File
          No. 001-12079).

     (h)  Incorporated  by  reference  to  Calpine  Corporation's   Registration
          Statement on Form S-3/A (File No. 333-57338).

     (i)  Approximately 24 pages of this exhibit have been omitted pursuant to a
          request for  confidential  treatment.  The omitted  language  has been
          filed separately with the Securities and Exchange Commission.

(b) Reports on Form 8-K

The registrant filed the following  reports on Form 8-K during the quarter ended
June 30, 2001:


          Date of Report            Date Filed            Item Reported
          --------------          --------------          -------------
                                                        
           April 9, 2001          April 10, 2001                 5
          April 19, 2001          April 19, 2001               2, 7
          April 26, 2001          April 30, 2001               5, 7
           June 26, 2001           June 26, 2001                 5







                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

CALPINE CORPORATION

By: /s/ Ann B. Curtis                                      Date: August 14, 2001
    ---------------------------------
    Ann B. Curtis
    Executive Vice President
    (Chief Financial Officer)

By: /s/ Charles B. Clark, Jr.                              Date: August 14, 2001
    ---------------------------------
    Charles B. Clark, Jr.
    Vice President and Corporate Controller
    (Chief Accounting Officer)