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                                                                    EXHIBIT 4(g)



                             CERTIFICATE OF TRUST

        The undersigned, the trustees of CMS Energy Trust I desiring to form a
business trust pursuant to Delaware Business Trust Act, 12 Del. C. Section
3810, hereby certify as follows:

        1.  The name of the business trust being formed hereby (the "Trust") is
     CMS Energy Trust I.

        2.  The name and business address of the trustee of the Trust which has
     its principal place of business in the State of Delaware is as follows:

                        The Bank of New York (Delaware),  
                        a Delaware Banking corporation 
                        White Clay Center, Route 273  
                        Newark, Delaware  19711

        3.  This Certificate of Trust shall be effective as of the date of
     filing.

Dated:  May 21, 1997

                                        /s/ Alan M. Wright
                                        -------------------------------------
                                        Alan M. Wright, as Trustee

                                        /s/ Thomas A. McNish
                                        -------------------------------------
                                        Thomas A. McNish, as Trustee

                                        The Bank of New York (Delaware),
                                          as Trustee

                                        By: /s/ Frederick Clark
                                            ---------------------------------
                                            Name:  Frederick Clark
                                            Title:  Authorized Signatory