                                  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 9, 2002


                               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


<PAGE>


ITEM 9.  REGULATION FD DISCLOSURE.

     On  August  9,  2002,  each  of  the  Principal  Executive  Officer,  Peter
Cartwright,  and  Principal  Financial  Officer,  Robert D.  Kelly,  of  Calpine
Corporation submitted to the Securities and Exchange Commission sworn statements
pursuant to Securities and Exchange Commission Order 4-460.

     On August 12, 2002, Calpine  Corporation  announced the submission of these
statements to the Securities and Exchange Commission.

     A copy of each of these  statements,  and of the press  release  announcing
submission of these statements, is attached hereto as an Exhibit (99.0, 99.1 and
99.2).


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 12, 2002



<PAGE>





EXHIBIT INDEX

EXHIBIT (99.0):   Statement  Under  Oath  of Principal  Executive  Officer dated
August 9, 2002

EXHIBIT (99.1):   Statement  Under  Oath  of Principal  Financial  Officer dated
August 9, 2002

EXHIBIT (99.2):  Press  release  dated  August 12, 2002 - Calpine's  CEO and CFO
Submit Statements of Certification to SEC



<PAGE>

EXHIBIT 99.0
               Statement Under Oath of Principal Executive Officer
       Regarding Facts and Circumstances Relating to Exchange Act Filings


I, Peter Cartwright,  Chairman, President and Chief Executive Officer of Calpine
Corporation, state and attest that:

     (1)  To the  best of my  knowledge,  based  upon a  review  of the  covered
          reports  of  Calpine   Corporation,   and,   except  as  corrected  or
          supplemented  in a  subsequent  covered  report:

          o    no covered  report  contained  an untrue  statement of a material
               fact as of the end of the period  covered  by such  report (or in
               the case of a report on Form 8-K or definitive  proxy  materials,
               as of the date on which it was filed); and

          o    no covered  report  omitted to state a material fact necessary to
               make  the  statements  in the  covered  report,  in  light of the
               circumstances  under which they were made,  not  misleading as of
               the end of the period covered by such report (or in the case of a
               report on Form 8-K or definitive proxy materials,  as of the date
               on which it was filed).

     (2)  I have  reviewed the  contents of this  statement  with the  Company's
          audit committee.

     (3)  In this statement  under oath,  each of the following,  if filed on or
          before the date of this statement, is a "covered report":

          o    The Annual  Report on Form 10-K for the year ended  December  31,
               2001,  filed with the  Commission  on March 29, 2002,  of Calpine
               Corporation;

          o    all  reports  on Form  10-Q,  all  reports  on  Form  8-K and all
               definitive proxy materials of Calpine  Corporation filed with the
               Commission  subsequent to the filing of the Form 10-K  identified
               above; and

          o    any amendments to any of the foregoing.



/s/ Peter Cartwright                               Subscribed and sworn to
---------------------------
Peter Cartwright                                   before me this 9th day of
Chairman, President and Chief Executive            August 2002.
  Officer of Calpine Corporation
August 9, 2002                                     /s/ Kitina M. Nahinu
                                                   -----------------------------
                                                   Notary Public

                                                   My Commission Expires:6/27/03


EXHIBIT 99.1

               Statement Under Oath of Principal Financial Officer
       Regarding Facts and Circumstances Relating to Exchange Act Filings


I, Robert D. Kelly,  Executive  Vice  President and Chief  Financial  Officer of
Calpine Corporation, state and attest that:

          (1)  To the best of my  knowledge,  based upon a review of the covered
               reports of  Calpine  Corporation,  and,  except as  corrected  or
               supplemented in a subsequent covered report:

               o    no  covered  report  contained  an  untrue  statement  of  a
                    material  fact as of the end of the  period  covered by such
                    report (or in the case of a report on Form 8-K or definitive
                    proxy materials, as of the date on which it was filed); and

               o    no covered report omitted to state a material fact necessary
                    to make the  statements in the covered  report,  in light of
                    the circumstances under which they were made, not misleading
                    as of the end of the period  covered  by such  report (or in
                    the  case  of a  report  on  Form  8-K or  definitive  proxy
                    materials, as of the date on which it was filed).

          (2)  I have reviewed the contents of this statement with the Company's
               audit committee.

          (3)  In this statement under oath, each of the following,  if filed on
               or before the date of this statement, is a "covered report":

               o    The Annual  Report on Form 10-K for the year ended  December
                    31, 2001,  filed with the  Commission  on March 29, 2002, of
                    Calpine Corporation;

               o    all  reports on Form 10-Q,  all  reports on Form 8-K and all
                    definitive proxy materials of Calpine Corporation filed with
                    the  Commission  subsequent  to the  filing of the Form 10-K
                    identified above; and

               o    any amendments to any of the foregoing.



/s/ Robert D. Kelly                                Subscribed and sworn to
---------------------------------
Robert D. Kelly                                    before me this 9th day of
Executive Vice President and Chief                 August 2002.
  Financial Officer of Calpine Corporation
August 9th, 2002                                   /s/ Benjamin P. Slager
                                                   -----------------------------
                                                   Notary Public

                                                   My Commission Expires: N/A


EXHIBIT 99.2

NEWS RELEASE                                            CONTACTS: 408/995-5115
                                       Media Relations:  Katherine Potter, X1168
                                        Investor Relations:  Rick Barraza, X1125


                          CALPINE'S CEO AND CFO SUBMIT
                       STATEMENTS OF CERTIFICATION TO SEC

     (SAN JOSE, CALIF.) August 12, 2002 - Calpine  Corporation  [NYSE:CPN] today
announced  that its Chairman and Chief  Executive  Officer Peter  Cartwright and
Chief Financial Officer and Executive Vice President Robert D. Kelly have signed
and submitted to the U.S.  Securities and Exchange  Commission  (SEC) statements
under oath  certifying  that  Calpine's  2002 SEC filings,  as prescribed by the
recent SEC order,  contain no  material  misstatements  nor do they  contain any
material omissions.

     The SEC's June 27, 2002 order mandated CEOs and CFOs of  approximately  950
large publicly held companies to submit sworn  statements of  certification  for
their 2002 SEC filings. The documents covered by this order consist of Calpine's
Annual Report on Form 10-K for 2001, the 2002 proxy statement and all subsequent
SEC periodic  and current  reports  filed  through  August 9, 2002,  the date of
certification.

     Cartwright  and Kelly led a team that conducted a  comprehensive  review of
the  company's  2002 SEC  filings.  The results of this  review,  along with the
statements of certification, were reviewed with the company's audit committee.

     A copy of Cartwright's and Kelly's filing to the SEC will be made available
on the investor relations page of the company's website at  www.calpine.com  and
will     also     be     available      on     the     SEC's      website     at
www.sec.gov/rules/extra/ceocfo.htm.

     Based in San Jose,  Calif.,  Calpine  Corporation is a leading  independent
power company that is dedicated to providing  customers  with clean,  efficient,
natural  gas-fired  power  generation.  It generates  and markets  power through
plants it develops,  owns and operates, in 23 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 it owns 1.3 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 its
website at www.calpine.com.

