UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   ----------

                                  SCHEDULE TO/A
            Tender Offer Statement under Section 14(d)(1) or 13(e)(1)
                     of the Securities Exchange Act of 1934
                                (AMENDMENT NO 2)

                                   ----------

                             CMS ENERGY CORPORATION
                       (Name of Subject Company (issuer))

                             CMS ENERGY CORPORATION
                            (Name of Filing Persons)
                                    (Issuer)

                    3.375% CONVERTIBLE SENIOR NOTES DUE 2023
                         (Title of Class of Securities)

                                    125896AS9
                      (CUSIP Number of Class of Securities)

                               ROBERT C. SHROSBREE
                            ASSISTANT GENERAL COUNSEL
                             CMS ENERGY CORPORATION
                                ONE ENERGY PLAZA
                             JACKSON, MICHIGAN 49201
                                 (517) 768-7323
                                       AND
                                 THOMAS J. WEBB
                            EXECUTIVE VICE PRESIDENT
                           AND CHIEF FINANCIAL OFFICER
                             CMS ENERGY CORPORATION
                                ONE ENERGY PLAZA
                             JACKSON, MICHIGAN 49201
                                 (517) 788-1030
                      (Name, address, and telephone numbers
                    of persons authorized to receive notices
                          on behalf of filing persons)

                            CALCULATION OF FILING FEE


              TRANSACTION VALUATION *      AMOUNT OF FILING FEE **
              -----------------------      -----------------------
                   $150,000,000                    $19,005

* For the purpose of calculating the filing fee only, this amount is based on
the exchange for all $150 million of the existing and outstanding 3.375%
Convertible Senior Notes due 2023 for $150 million of new 3.375% Convertible
Senior Notes due 2023. 

** Previously Paid.

         [ ] Check the box if any part of the fee is offset as provided by Rule
0-11(a)(2) and identify the filing with which the offsetting fee was previously
paid. Identify the previous filing by registration statement number, or the Form
or Schedule and the date of its filing.

                        Amount Previously Paid:
                                               --------------------------
                        Form or Registration No.:
                                                  -----------------------
                        Filing Party:
                                     ------------------------------------
                        Date Filed:
                                    -------------------------------------

         [ ] Check the box if the filing relates solely to preliminary
             communications made before the commencement of a tender offer.

         Check the appropriate boxes below to designate any transactions to
         which the statement relates:

         [ ] third-party tender offer subject to Rule 14d-1.

         [X] issuer tender offer subject to Rule 13e-4.

         [ ]going-private transaction subject to Rule 13e-3.

         [ ]amendment to Schedule 13D under Rule 13d-2.

         Check the following box if the filing is a final amendment reporting
         the results of the tender offer: [ ]







This Amendment No. 2 amends and supplements the Tender Offer Statement on
Schedule TO originally filed with the Securities and Exchange Commission on
November 9, 2004 and amended by Amendment No. 1 thereto filed on November 29,
2004 (as so amended, (the "Schedule TO") by CMS Energy Corporation, a Michigan
corporation ("CMS Energy"), relating to the offer to exchange (the "Exchange
Offer") an aggregate principal amount of $150,000,000 of CMS Energy's 3.375%
Convertible Senior Notes due 2023 (the "new notes") for a like principal amount
of CMS Energy's issued and outstanding 3.375% Convertible Senior Notes due 2023
(the "old notes") from the registered holders thereof upon the terms and subject
to the conditions contained in the Offering Memorandum dated November 9, 2004
(the "Offering Memorandum") and the related Letter of Transmittal, which
together, as each may be amended and supplemented from time to time, constitute
the tender offer. This Amendment No. 2 is intended to satisfy the reporting
requirements of Rule 13e-4(c)(4) of the Securities Exchange Act of 1934, as
amended. Copies of the Offering Memorandum and the Letter of Transmittal were
previously filed with the Schedule TO as Exhibits (12)(a)(1) and (12)(a)(2),
respectively.

The information in the Offering Memorandum and the Letter of Transmittal, as
amended or supplemented prior to the date hereof, is incorporated in this
Amendment No. 2 to the Schedule TO by reference in response to all of the
applicable items in the Schedule TO, except that such information is hereby
amended and supplemented to the extent specifically provided herein.

ITEM 11. ADDITIONAL INFORMATION.

         Item 11 of the Schedule TO is hereby amended and supplemented by adding
the following information:

         On December 10, 2004, CMS Energy issued a press release announcing the
results of the Exchange Offer, which expired on December 9, 2004. A copy of this
press release is filed as Exhibit (12)(a)(7).

ITEM 12. EXHIBITS.

         Item 12 of Schedule TO is hereby amended and supplemented by adding the
following exhibit.

         (a)(7) Press Release, dated December 10, 2004.



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                                    SIGNATURE

After due inquiry and to the best of my knowledge and belief, I certify that the
information set forth in this statement is true, complete and correct.




/s/ Thomas J. Webb
--------------------------------
(Name) Thomas J. Webb
(Title) Executive Vice President
        Chief Financial Officer


December 10, 2004
--------------------------------
(Date)



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