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                                    FORM 6-K
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                            Report of Foreign Issuer

                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934

                         For the month of October, 2005

                        Commission File Number: 333-07654


                                  ENDESA, S.A.
                 (Translation of Registrant's Name into English)

                              Ribera del Loira, 60
                               28042 Madrid, Spain
                     (Address of principal executive office)

                  Indicate by check mark whether the registrant
                     files or will file annual reports under
                        cover of Form 20-F or Form 40-F:
                      Form 20-F    |X|      Form 40-F   |_|

                   Indicate by check mark if the registrant is
                       submitting the Form 6-K in paper as
                   permitted by Regulation S-T Rule 101(b)(1):
                            Yes    |_|           No     |X|

                   Indicate by check mark if the registrant is
                       submitting the Form 6-K in paper as
                   permitted by Regulation S-T Rule 101(b)(7):
                            Yes    |_|           No     |X|

                        Indicate by check mark whether by
             furnishing the information contained in this Form, the
     Registrant is also thereby furnishing the information to the Commission
      pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:
                            Yes    |_|           No     |X|

  If "Yes" is marked, indicate below the file number assigned to the registrant
                     in connection with Rule 12g3-2(b): N/A
                                                        ---


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                               ENDESA'S DISCLOSURE


New York, October 5, 2005.- The press release issued today,  October 5, 2005, by
Gas  Natural,   which  contains  a  number  of  false  statements,   reveal  the
difficulties  the company is facing in reaching  its goal of gaining  control of
Endesa (NYSE:ELE) without paying a fair price to shareholders.

All Gas Natural should be saying to Endesa's  shareholders  are the terms of its
takeover bid.

Endesa's only objective is to ensure its shareholders  understand and value what
they possess and the company will continue to spread this message.

Endesa's  pursuit of this  objective  is unwelcome by a bidder like Gas Natural,
which aims to acquire Endesa paying an inadequate price, operates with a lack of
transparency and is obsessed with silencing  others'  opinions.  This is clearly
demonstrated by Gas Natural's ongoing attempts to prevent Endesa's  shareholders
from exercising their legitimate rights to gain access to more information.

With this in mind,  Endesa points out yet again that, to this date,  the content
of certain important agreements,  such as the one Gas Natural and Iberdrola have
supposedly signed, has not been disclosed publicly.



                    For additional information please contact
                       Alvaro Perez de Lema, North America
                     Investor Relations Office, telephone #
                                  212 750 7200
                              http://www.endesa.es





                                   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, thereunto duly authorized.


                                        ENDESA, S.A.

Dated: October 5th , 2005     By: /s/ Alvaro Perez de Lema
                                  --------------------------
                              Name: Alvaro Perez de Lema
                              Title: Manager of North America Investor Relations