<DOCUMENT>
<TYPE>EX-32.(B)
<SEQUENCE>27
<FILENAME>k91832exv32wxby.txt
<DESCRIPTION>CONSUMERS' CERTIFICATIONS PURSUANT TO SECTION 906
<TEXT>
<PAGE>

                                                                   Exhibit 32(b)

                    CERTIFICATION OF CEO AND CFO 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 Annual Report on Form 10-K of Consumers Energy Company
(the "Company") for the annual period ended December 31, 2004 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), David W.
Joos, as Chief Executive Officer of the Company, and Thomas J. Webb, as
Executive Vice President and Chief Financial Officer of the Company, each hereby
certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

            (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.

   /s/ David W. Joos
-------------------------------
Name:  David W. Joos
Title: Chief Executive Officer
Date:  March 10, 2005

   /s/ Thomas J. Webb
-------------------------------
Name:  Thomas J. Webb
Title: Executive Vice President and
       Chief Financial Officer
Date:  March 10, 2005
</TEXT>
</DOCUMENT>
