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 5, 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

     On August 5, 2004, Calpine Corporation ("Calpine") issued the press release
attached hereto as Exhibit 99.1 reporting a new credit facility  entered into by
its wholly owned subsidiary, Calpine Energy Management, L.P. ("CEM").

     CEM's  assets are  expected to be  primarily  gas and power  contracts  and
short-term receivables under those contracts. Its liabilities are expected to be
primarily  short-term  payables under those  contracts.  CEM does not and is not
permitted to guarantee,  secure, or otherwise assume responsibility for any debt
or other obligations of Calpine or any of its other affiliates.  Calpine and its
other affiliates do not guarantee,  secure,  or otherwise assume  responsibility
for any debt or other obligations of CEM. The assets, liabilities,  revenues and
expenses of CEM will be kept separate and distinct from those of Calpine and its
other affiliates. CEM is required to strictly observe all necessary, appropriate
and customary  corporate  formalities in its dealings with Calpine and its other
affiliates  and to make all  decisions  with  respect to its  business and daily
operations independently.

Exhibits.

     99.1 Press release dated August 5, 2004,  announcing Calpine  Corporation's
          new $250  million  letter  of  credit  facility  to  increase  working
          capital.

EXHIBIT 99.1

NEWS RELEASE                                            CONTACTS: (408) 995-5115
                                    Media Relations:  Bill Highlander, Ext. 1244
                                                     Katherine Potter, Ext. 1168
                                    Investor Relations:  Rick Barraza, Ext. 1125


                  Calpine Finalizes Agreement to Enhance Credit
                for Short-Term Natural Gas and Power Transactions

     New $250 Million Letter of Credit Facility to Increase Working Capital


     (SAN  JOSE,  Calif.)  /PR  Newswire - First  Call/  Aug.  5, 2004 - Calpine
Corporation  [NYSE:CPN]  today  announced  that it has  implemented a new credit
enhancement structure that it expects will improve spark spreads for the company
and increase  working  capital at its  wholly-owned  subsidiary,  Calpine Energy
Services.

     As part of this  innovative  new structure,  Calpine  created a new entity,
Calpine  Energy  Management  (CEM),  to  facilitate  short-term  gas  and  power
purchases  and  sales  transactions  ranging  from the  hourly  market up to one
forward  month.  CEM has entered into a $250 million  letter of credit  facility
with Deutsche Bank (rated  Aa3/AA-) that expires in October 2005.  Deutsche Bank
will guarantee  CEM's power and gas  obligations  by issuing  letters of credit.
Receivables  generated  through  power sales will serve as collateral to support
the letters of credit.

     "With  Calpine's  years of experience in the energy  market,  together with
Deutsche Bank's financial services  capabilities,  Calpine Energy Management can
create  short-term  contracts  with AA- credit to better meet our customers' and
suppliers'  needs,"  stated  Calpine Chief  Financial  Officer Bob Kelly.  "This
facility will also enable  Calpine to increase  working  capital by matching our
payments  for gas  purchases  with the  receipt  of cash from the sale of power.
Equally important, it will enhance our margins through an expansion of our power
and gas customer base."

About Calpine

     Calpine  Corporation,  celebrating  its 20th  year in  power in 2004,  is a
leading North  American power company  dedicated to providing  electric power to
customers from clean, efficient,  natural gas-fired and geothermal power plants.
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 the United  States and Canada.  The  company,  founded in 1984,  is
listed on the S&P 500 and was named  FORTUNE's 2004 Most Admired Energy Company.
Calpine is publicly  traded on the New York Stock Exchange under the symbol CPN.
For more information, visit www.calpine.com.

     This  news  release  discusses  certain  matters  that  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.
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  such as, but not
limited to, (i) the timing and extent of  deregulation of energy markets and the
rules and regulations adopted on a transitional basis with respect thereto; (ii)
the timing and extent of changes in  commodity  prices for energy,  particularly
natural gas and  electricity;  (iii) risks associated with marketing and selling
power from power plants in the  newly-competitive  energy market; and (iv) other
risks  identified from  time-to-time in the Company's  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,  2003 and in its
Quarterly  Report on Form 10-Q for the quarter  ended March 31, 2004,  which can
also 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:  August 13, 2004