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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 February, 2006

                        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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Press Release

New York,  February 21st, 2006.  Concerning the tender offer for Endesa's (NYSE:
ELE) shares  submitted today by E.ON and the proposed terms of the  transaction,
the Board of  Directors  deems it  convenient  to make the  following  unanimous
considerations  and preliminary  assessment,  in the interest of the company and
its shareholders.

     1.   Endesa has conducted  discussions,  in accordance  with the applicable
          legal  framework,  with  companies  interested  in the tender  process
          initiated by Gas Natural on September  5th, 2005 and E.ON has been one
          of them.  These  discussions do not imply any commitments  between the
          parties.

     2.   E.ON's offer  competes with Gas  Natural's.  Its full cash nature will
          enable Endesa's shareholders to make a precise assessment of the price
          offered and thus facilitate the decision making process.

     3.   The  price  offered  by E.ON  clearly  improves  that of Gas  Natural,
          nevertheless  the  Board  of  Directors  considers  that it  does  not
          adequately reflect Endesa's real value.

     4.   The Board of  Directors  appraises  positively  the fact  that  E.ON's
          proposed operation maintains Endesa's business plan completely without
          selling any assets.

This preliminary  assessment should be construed without prejudice to the report
Endesa's Board of Directors  will have to issue in accordance  with article 20.3
of Royal Decree  1197/1991,  from July 26th,  which regulates  Tender Offers for
Shares, once E.ON's prospectus is approved by the CNMV.

The Board of Directors  reiterates its commitment to the company's business plan
that provides it with growth and profitability prospects.


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


*    This  document may contain  certain  forward-looking  statements  regarding
anticipated  financial and operating  results and statistics that are subject to
risks and uncertainties as well as to material risks,  changes and other factors
which may be difficult to predict, including,  without limitation, those factors
described  in the  Documento  de Registro de Acciones of Endesa filed within the
Comision  Nacional  del Mercado de Valores and in the Form 20-F of Endesa  filed
within the  Securities and Exchange  Commission,  both for the fiscal year ended
December 31, 2004.  For all of these  forward-looking  statements,  we claim the
protection of the safe harbour for forward-looking  statements  contained in the
Private Securities Litigation Reform Act of 1995.





                                   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: February 21st , 2006               By: /s/ Alvaro Perez de Lema
                                             --------------------------
                                          Name:  Alvaro Perez de Lema
                                          Title: Manager of North America
                                                 Investor Relations