Exhibit 99.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the quarterly report of MEMC Electronic Materials, Inc. (the
"Company") on Form 10-Q for the period ending March 31, 2003 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, James
M. Stolze, Executive Vice President and Chief Financial Officer of the Company,
certify, to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     1.   The Report fully complies with the requirements of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; 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: May 2, 2003                        By: /s/ James M. Stolze
                                             -----------------------
                                         Name:  James M. Stolze
                                         Title: Executive Vice President and
                                                Chief Financial Officer
                                                MEMC Electronic Materials, Inc.