FORM 6-K
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        Report of Foreign Private Issuer

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




For the month of   July 2003

Commission File Number 333-7182-01


                                   CEZ, a.s.

      _____________________________________________________________________
                 (Translation of registrant's name into English)

                                c/o Duhova 2/1444
                                 140 53 Prague 4
                                 Czech Republic

       ____________________________________________________________________
                    (Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports
under cover 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): ____

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): ____

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): 82- ________
<PAGE>

The  following  information  was filed by CEZ,  a.s. in Czech  language with the
Prague Stock Exchange as required by its rules and regulations:


Notice of a Change in Voting Rights
-----------------------------------

In connection with:

|X|  the  Share  Exchange  Agreement  in  respect  of joint  stock  companies  -
     Jihoceska  energetika,  Jihomoravska  energetika,  Severoceska  energetika,
     Severomoravska   energetika,   Vychodoceska   energetika  and   Zapadoceska
     energetika  -  entered  into  by  E.ON  Czech  Holding  AG  and  EBO  Czech
     Investments Limited and CEZ, a.s. on July 4, 2003; and

|X|  the mandatory  tender offer in respect of  participating  securities in the
     joint stock companies,  Stredoceska energeticka and Zapadoceska energetika,
     which  securities may be acquired by CEZ, a.s.  under the mandatory  tender
     offer  launched by CEZ,  a.s.  on June 2, 2003 (the  binding  offer  period
     terminated on June 30, 2003)


CEZ provides notice of the shares in voting rights:


                                                      Share in voting rights
.................................................................................
Jihoceska energetika                                           0.00
.................................................................................
Jihomoravska energetika                                        0.00
.................................................................................
Severoceska energetika                                         56.93
.................................................................................
Severomoravska energetika                                      89.36
.................................................................................
Stredoceska energeticka                                        97.73
.................................................................................
Vychodoceska energetika                                        91.81
.................................................................................
Zapadoceska energetika                                         99.06
.................................................................................

<PAGE>

                                   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.


                                                         CEZ, a.s.

                                                   ________________________
                                                        (Registrant)

Date: July 9, 2003

                                                      /s/ Libuse Latalova
                                                  By:______________________
                                                        Libuse Latalova
                                                  Head of Finance Administration