Exhibit 99(c)

                                    TXU CORP.
                       Certificate Pursuant to Section 906
                         of Sarbanes - Oxley Act of 2002

     The undersigned, Michael J. McNally, Executive Vice President and Chief
Financial Officer of TXU Corp. (the "Company"), DOES HEREBY CERTIFY that:

     1. The Company's Quarterly Report on Form 10-Q for the quarter ended
        September 30, 2002 (the "Report") fully complies with the requirements
        of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as
        amended; and

     2. Information contained in the Report fairly presents, in all material
        respects, the financial condition and results of operation of the
        Company.

     IN WITNESS WHEREOF, the undersigned has caused this instrument to be
executed this 14th day of November, 2002.


                                     /s/  Michael J. McNally
                                   ----------------------------------------
                                   Name:  Michael J. McNally
                                   Title: Executive Vice President
                                          and Chief Financial Officer