EXHIBIT 99-9


                        CERTIFICATION OF PERIODIC REPORT



I, Anthony F. Earley, Jr., Chairman, President, Chief Executive and Chief
Operating Officer of DTE Energy Company (the "Company"), certify, pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that to
the best of my knowledge and belief:

(1)  the Annual Report on Form 10-K of the Company for the annual period ended
     December 31, 2002 (the "Report") fully complies with the requirements of
     Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C.
     78m or 78o(d)); and

(2)  the information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the Company.



Date:    March 20, 2003                       /s/ ANTHONY F. EARLEY, JR.
                                      -----------------------------------------
                                                Anthony F. Earley, Jr.
                                      Chairman, President, Chief Executive and
                                       Chief Operating Officer of DTE Energy
                                                       Company