EX. 99.1


                            CERTIFICATION PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

                                  CERTIFICATION
By signing below, each of the undersigned officers hereby certifies pursuant to
18 U.S.C. ss. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002, that, to his or her knowledge, (i) this 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 this report fairly presents, in all
material respects, the financial condition and results of operations of Vectren
Corporation.

         Signed this 17th day of June, 2003.




/s/ Jerome A. Benkert, Jr.                 /s/ Niel C. Ellerbrook
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(Signature of Authorized Officer)          (Signature of Authorized Officer)


Jerome A. Benkert, Jr.                      Niel C. Ellerbrook
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(Typed Name)                                (Typed Name)


Executive Vice President and Chief
 Financial Officer                          Chairman and Chief Executive Officer
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(Title)                                     (Title)