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                                                                 Exhibit 31(a)

                             TXU US HOLDINGS COMPANY
                       Certificate Pursuant to Section 302
                         of Sarbanes - Oxley Act of 2002
                              CERTIFICATION OF CEO

         I, C. John Wilder, Chairman of the Board and Chief Executive of TXU
US Holdings Company, certify that:

1.       I have reviewed this annual report on Form 10-K of TXU US
         Holdings Company;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the
         circumstances under which such statements were made, not
         misleading with respect to the period covered by this report;

3.       Based on my knowledge, the financial statements, and other
         financial information included in this report, fairly present
         in all material respects the financial condition, results of
         operations and cash flows of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officer(s) and I are
         responsible for establishing and maintaining disclosure
         controls and procedures (as defined in Exchange Act Rules
         13a-15(e) and 15d-15(e)) for the registrant and have:

            a.  Designed such disclosure controls and procedures, or caused
                such disclosure controls and procedures to be designed under
                our supervision, to ensure that material information relating
                to the registrant, including its consolidated subsidiaries, is
                made known to us by others within those entities, particularly
                during the period in which this report is being prepared;

            b.  Evaluated the effectiveness of the registrant's disclosure
                controls and procedures and presented in this report our
                conclusions about the effectiveness of the disclosure controls
                and procedures, as of the end of the period covered by this
                report based on such evaluation; and

            c.  Disclosed in this report any change in the registrant's
                internal control over financial reporting that occurred during
                the registrant's most recent fiscal quarter (the registrant's
                fourth fiscal quarter in the case of an annual report) that
                has materially affected, or is reasonably likely to materially
                affect, the registrant's internal control over financial
                reporting; and

5.       The registrant's other certifying officer(s) and I have disclosed,
         based on our most recent evaluation of internal control over financial
         reporting, to the registrant's auditors and the audit committee of the
         registrant's board of directors (or persons performing the equivalent
         functions):

            a.  All significant deficiencies and material weaknesses in the
                design or operation of internal control over financial
                reporting which are reasonably likely to adversely affect the
                registrant's ability to record, process, summarize and report
                financial information; and

            b.  Any fraud, whether or not material, that involves management
                or other employees who have a significant role in the
                registrant's internal control over financial reporting.







Date:  March 16, 2004                       /s/ C. John Wilder
                                   -------------------------------------------
                                   Signature:  C. John Wilder
                                   Title:  Chairman of the Board and
                                           Chief Executive