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): January 6, 2004


                               CALPINE CORPORATION

                            (A Delaware Corporation)

                        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





ITEM 5.  OTHER EVENTS

NEWS RELEASE                                            CONTACTS: (408) 995-5115
                                        Media Relations: Katherine Potter, x1168
                                         Investor Relations: Rick Barraza, x1125


              Calpine Announces Initial Purchaser Exercises Option
         to Purchase Additional $250 Million of 4 3/4% Senior Unsecured
                           Convertible Notes Due 2023

     (SAN  JOSE,  CALIF.)  /PRNEWSWIRE  - First  Call/  Jan.  6,  2004 - Calpine
Corporation  [NYSE:CPN]  today  announced  that it has sold an  additional  $250
million of its 4 3/4% Senior Unsecured  Convertible Notes Due 2023,  pursuant to
the exercise by the initial purchaser of its entire remaining option.

     This transaction is expected to close on January 9, 2004. Net proceeds from
the offering will be used to repurchase or repay existing indebtedness.

     The 4 3/4% Senior  Unsecured  Convertible  Notes Due 2023 were offered in a
private placement under Rule 144A, have not been registered under the Securities
Act of 1933, and may not be offered in the United States absent  registration or
an applicable exemption from registration requirements. This press release shall
not  constitute  an  offer  to  sell or the  solicitation  of an  offer  to buy.
Securities  laws  applicable  to  private  placements  under Rule 144A limit the
extent of information that can be provided at this time.








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 and Controller
                            Chief Accounting Officer

Date:  January 6, 2004