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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 September, 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 Asks The EU Commission to Assume Jurisdiction in the
      Concentration Operation Launched by Gas Natural; More than one third
     of Endesa's turnover is generated in EU member countries outside Spain

     NEW YORK--(BUSINESS  WIRE)--Sept. 22, 2005--Endesa (NYSE:ELE) has requested
that the European  Commission assume  jurisdiction  over the Endesa/Gas  Natural
concentration  operation  pursuant  to  article  5 of  EU  regulation  governing
concentrations  between undertakings and the Commission Notice on Calculation of
Turnover published in Official Journal 66 on March 2, 1988.
     Endesa  considers  that the  take-over  bid  launched  by Gas  Natural is a
concentration  between undertakings of community  dimension.  In accordance with
accounting  principles  currently  in  force  and  the  interpretation  criteria
established  by the  Commission,  the  financial  information  published  by the
Company for last year shows that Endesa's  turnover  gives the  concentration  a
community  dimension under current  regulations  governing  concentrations.  The
parties  involved,  Endesa and Gas Natural,  together have a global  turnover of
over Euro 5 billion and each generates  turnover of over Euro 250 million within
the European Union. Based on this criteria, the operation can be deemed to be of
"community interest" and should fall under Community  jurisdiction.  Neither can
the  concentration  be deemed an exception to the general  rule, as no more than
two-thirds  of Endesa's  turnover in the EU is  generated  in any member  state.
Endesa's turnover in Spain does not exceed 66.6% of its community turnover.

     * 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.


    CONTACT: Endesa
             North America Investor Relations Office,
             Alvaro Perez de Lema, 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: September 22nd , 2005                By: /s/ Alvaro Perez de Lema
                                                --------------------------
                              Name: Alvaro Perez de Lema
                              Title: Manager of North America Investor Relations