UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934


        Date of Report (Date of earliest event reported): August 12, 2005


                               CALPINE CORPORATION
             (Exact name of registrant as specified in its charter)

                                    Delaware
                 (State of Other Jurisdiction of Incorporation)

                        Commission file number: 001-12079

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

                           50 West San Fernando Street
                           San Jose, California 95113
                            Telephone: (408) 995-5115
         (Address of principal executive offices and telephone number)

     Check the  appropriate  box below if the Form 8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

     [ ]  Written communications pursuant to Rule 425 under the Securities Act
          (17 CFR 230.425)

     [ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act
          (17 CFR 240.14a-12)

     [ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
          Exchange Act (17 CFR 240.14d-2(b))

     [ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
          Exchange Act (17 CFR 240.13e-4(c))





ITEM 2.03 CREATION OF A DIRECT  FINANCIAL  OBLIGATION OR AN OBLIGATION  UNDER AN
          OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT


     On August 12, 2005,  CCFC Preferred  Holdings,  LLC (the  "Issuer")  issued
150,000  Redeemable  Preferred  Shares  (the  "Preferred  Shares"),  each with a
paid-up  value of  $1,000.  The  Issuer is an  indirect  subsidiary  of  Calpine
Corporation  ("Calpine") and an indirect parent of Calpine  Construction Finance
Company,  L.P. ("CCFC").  The Preferred Shares were sold to Morgan Stanley & Co.
Incorporated  (the  "Investor").  Net  proceeds  from the sale of the  Preferred
Shares were distributed to Calpine for use in accordance with Calpine's existing
bond indentures.

     The Preferred  Shares  initially accrue dividends at a rate per annum equal
to the six-month  U.S.  Dollar LIBOR plus a margin of 950 basis  points.  If any
Preferred Shares remain  outstanding after September 30, 2005, then beginning on
October 1, 2005, and for each subsequent  calendar month thereafter,  the margin
for such calendar month will increase by 50 basis points over the margin for the
prior calendar month until all of the Preferred  Shares have been repurchased or
redeemed,  up to a maximum  margin of 1,200 basis  points,  except that upon the
occurrence and during the continuance of certain voting rights triggering events
(as  described  below),  the rate per annum for  dividends  will increase by 200
basis points above the then-applicable margin.

     Voting rights triggering events include, among other things, the failure of
the Issuer to declare and pay  dividends  when due or to satisfy  any  mandatory
redemption or repurchase requirements;  the occurrence of a default under CCFC's
term loan agreement or the indenture  governing CCFC's second priority  floating
rate notes  (together,  the "CCFC Financing  Documents");  the breach of certain
other  covenants or  undertakings  with  respect to the  Preferred  Shares;  and
certain   bankruptcy-related   events  in   relation   to  the  Issuer  and  its
subsidiaries. In addition, upon the occurrence of a voting rights trigger event,
the  holders of the  Preferred  Shares will have the right to elect the board of
directors of the Issuer.

     Other  than  in  connection  with  optional  or  mandatory  redemptions  or
repurchases  of Preferred  Shares,  no dividends  are  otherwise  payable  until
February 13, 2006 (the "Maturity  Date").  On the Maturity Date, the Issuer will
be required to redeem all of the  then-outstanding  Preferred Shares for a price
equal to their  paid-up  value  plus any  accrued  and unpaid  dividends  to the
Maturity Date.

     At its  option,  the  Issuer may  redeem or offer to  repurchase  Preferred
Shares,  in  whole or in part,  at any time for a price  equal to their  paid-up
value plus accrued and unpaid  dividends to the date of  redemption.  The Issuer
will be  required  to  redeem  or  repurchase  Preferred  Shares  (i)  upon  the
occurrence of certain change of control events with respect to the Issuer and/or
its direct and indirect parents and/or subsidiaries,  and (ii) with the proceeds
of certain assets sales, debt issuances,  and equity issuances, in each case (x)
by the Issuer and/or its direct and indirect parents and subsidiaries and (y) to
the extent permitted by, and after  compliance with all applicable  requirements
of, the CCFC Financing Documents.

     The terms of the Preferred  Shares require the Issuer to comply with all of
its  obligations  under  the  CCFC  Financing  Documents,  as  well  as  certain
additional covenants.


ITEM 9.01  FINANCIAL STATEMENTS AND EXHIBITS


(a) Financial Statements of Businesses Acquired.


         Not Applicable


(b) Pro Forma Financial Information.


         Not Applicable


(c) Exhibits.


         Not Applicable








                                   SIGNATURES

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

                                  CALPINE CORPORATION

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


Date: August 19, 2005