Exhibit 32.7

         Certificate Pursuant to Section 1350 of Chapter 63 of Title 18
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                               United States Code
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         The undersigned officer hereby certifies, as to the Quarterly Report on
     Form 10-Q of Exelon Generation Company,  LLC for the quarterly period ended
     June 30, 2003, that (i) the report fully complies with the  requirements of
     section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the
     information  contained  in the  report  fairly  presents,  in all  material
     respects,  the  financial  condition  and results of  operations  of Exelon
     Generation Company, LLC.



     Date:  July 30, 2003                   /s/ Oliver D. Kingsley Jr.
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                                                Oliver D. Kingsley Jr.
                                                Chief Executive Officer and
                                                President