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): February 9, 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 Commences Tender Offer for 4% Convertible
                              Senior Notes Due 2006

     (SAN  JOSE,  Calif.),   /PRNewswire-FirstCall/  Feb.  9,  2004  --  Calpine
Corporation [NYSE:CPN],  a leading North American power company, today announced
a cash tender offer for the outstanding  principal  amount on its 4% Convertible
Senior Notes Due December 26, 2006 (Notes). The tender offer will expire at 5:00
p.m.  Eastern  Standard  Time on March  9,  2004,  unless  extended  or  earlier
terminated. The tender offer is not subject to the receipt of any minimum amount
of tenders.

     Calpine is  purchasing  the Notes in order to reduce  outstanding  debt and
reduce  interest  expense.  The tender offer will be funded from proceeds from a
recently completed private placement of 4 3/4% Contingent  Convertible Notes Due
2023.  Calpine is offering to purchase the Notes at a repurchase  price equal to
their par value plus accrued and unpaid interest up to, but excluding,  the date
the Notes are paid for pursuant to the offer.

     This press release is neither an offer to purchase nor a solicitation of an
offer to sell  securities  and no  recommendation  is made as to  whether or not
holders of Notes should tender their Notes  pursuant to the offer.  The offer is
made only by the Offer to Purchase, dated February 9, 2004.

     The terms and  conditions of the tender offer appear in Calpine's  Offer to
Purchase, dated February 9, 2004, and the related Letter of Transmittal.  Copies
of these and other  related  documents  will be filed  with the  Securities  and
Exchange Commission (SEC) today as exhibits to Schedule TO, and will be provided
to the holders of the Notes. These documents contain important information about
Calpine,  the Notes,  Calpine's offer to purchase the Notes and related matters.
Holders  of the Notes  are urged to read  these  documents  carefully  when they
become  available,  because they will contain  important  information  about the
offer. Investors and holders can obtain free copies of the Schedule TO, Offer to
Purchase and Letter of  Transmittal  and other  documents  filed with the SEC by
Calpine through the web site maintained by the SEC at www.sec.gov. Investors and
holders can obtain  free  copies of these  documents  directly  from  Calpine by
contacting the company at: Calpine Corporation, 50 West San Fernando Street, San
Jose, California 95113,  attention:  Lisa M. Bodensteiner,  Assistant Secretary,
telephone:  (408)  995-5115.  In addition,  Calpine has retained  Deutsche  Bank
Securities Inc. to act as Dealer Manager in connection with the offer. Questions
about the offer may be directed to MacKenzie  Partners,  Inc.,  the  information
agent for the offer, at (800) 322-2885 or (212) 929-5500.

     Calpine  Corporation,  celebrating  its 20th  year in  power in 2004,  is a
leading North  American power company  dedicated to providing  electric power to
wholesale and industrial customers from clean, efficient,  natural gas-fired and
geothermal power  facilities.  The company  generates power at plants it owns or
leases in 21 states in the United States,  three  provinces in Canada and in the
United  Kingdom.  Calpine is also the  world's  largest  producer  of  renewable
geothermal  energy,  and owns or controls  approximately one trillion cubic feet
equivalent of proved natural gas reserves in Canada and the United  States.  The
company  was  founded  in 1984 and is  publicly  traded  on the New  York  Stock
Exchange  under the  symbol  CPN.  For more  information  about  Calpine,  visit
www.calpine.com

     This  news  release  contains   "forward-looking"   statements,   including
statements  regarding  the  intent,  belief or current  expectations  of Calpine
Corporation  ("the  Company")  and its  management.  Prospective  investors  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,  including risks identified from time-to-time
in our reports and  registration  statements  filed with the SEC,  including the
risk  factors  identified  in its Annual  Report on Form 10-K for the year ended
December 31, 2002,  updated on Form 8-K on October 23, 2003,  and its  quarterly
report on Form 10-Q for the quarter ended September 30, 2003, which can be found
on the Company's website at  www.calpine.com.  All information set forth in this
news release is as of today's date, and the Company undertakes no duty to update
this information.








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:  February 9, 2004