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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 14D-9

                   SOLICITATION/RECOMMENDATION STATEMENT UNDER
             SECTION 14(D)(4) OF THE SECURITIES EXCHANGE ACT OF 1934
                             ----------------------

                                  ENDESA, S.A.
                            (Name of Subject Company)
                             ----------------------

                                  ENDESA, S.A.
                      (Name of Person(s) Filing Statement)
                             ----------------------

                 Ordinary shares, nominal value (euro)1.20 each

           American Depositary Shares, each representing the right to
                           receive one ordinary share
                         (Title of Class of Securities)

                                   00029274F1
                      (CUSIP Number of Class of Securities)

                              Alvaro Perez de Lema
                    Authorized Representative of Endesa, S.A.
                           410 Park Avenue, Suite 410
                               New York, NY 10022
                                 (212) 750-7200

   (Name, Address and Telephone Number of Person Authorized to Receive Notices
         and Communications on Behalf of the Person(s) Filing Statement)

                                 With a Copy to:
               Sergio J. Galvis, Richard A. Pollack, Angel L. Saad
                             Sullivan & Cromwell LLP
                                125 Broad Street
                            New York, New York 10004
                                1 (212) 558-4000

  |X| Check the box if the filing relates solely to preliminary communications
                made before the commencement of a tender offer.

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     The following  press release was issued by Endesa,  S.A. (the  "Company" or
"Endesa")  on  September  13th,  2005.  Endesa  shareholders  are  urged to read
Endesa's  Solicitation/Recommendation  Statement  on  Schedule  14D-9 when it is
filed by the Company  with the U.S.  Securities  and  Exchange  Commission  (the
"SEC"),     as    it     will     contain     important     information.     The
Solicitation/Recommendation Statement and other public filings made from time to
time by the Company  with the SEC are  available  without  charge from the SEC's
website at  www.sec.gov  and at the  Company's  principal  executive  offices in
Madrid, Spain.

                                      * * *

EVENTHOUGH  THE  FOLLOWING  DOCUMENT  IS DATED ON  SEPTEMBER  12, IT WAS SENT ON
SEPTEMBER 13.


                                                     Madrid, 12th September 2005


I am writing to update you on  Endesa's  response to the  hostile  tender  offer
launched by Gas Natural  (the  "Offer") and inform you of what to expect from us
in the coming weeks.

As you will have  seen,  Endesa's  Board of  Directors  has  rejected  the offer
unanimously based on the conviction that it is grossly inadequate and not in the
best interests of our  shareholders.  We strongly believe  Endesa's  stand-alone
Strategic Plan will deliver superior value to our  shareholders  compared to the
(highly  uncertain) value implied by the Offer.  Furthermore,  Endesa's Board of
Directors is confident of achieving this superior value without the  significant
risk entailed by the proposed transaction.

We are  currently  preparing  a  comprehensive  response  to the  offer and will
contact you shortly to schedule a time to discuss it in person. In the meantime,
we ask for your continued support and confidence in the strong positive momentum
of the Endesa story.

Yours sincerely,


Rafael Miranda
CEO