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

                                 ---------------

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

                                 ---------------

                             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                 $19,005.00
            ----------------------------- ---------------------------
 * 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.

** Calculated in accordance with Rule 0-11 based on the transaction value
multiplied by one-fiftieth of one percent.

    [ ] 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. 1 amends and supplements the Tender Offer Statement on
Schedule TO originally filed with the Securities and Exchange Commission on
November 9, 2004 (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. 1 is intended to satisfy the reporting
requirements of Rule 13e-4(c)(3) 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 is
incorporated in this Amendment No. 1 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.

ITEMS 1 THROUGH 11.

Items 1 through 11 of the Schedule TO, which incorporate by reference the
information contained in the Offering Memorandum and the Letter of Transmittal,
copies of which were filed with the Schedule TO as Exhibits (12)(a)(1) and
(12)(a)(2), respectively, are hereby amended as follows:

1. The first paragraph set forth under "Forward-Looking Statements and
Information" on page ii of the Offering Memorandum is hereby deleted in its
entirety and replaced with the following:

        This offering memorandum contains forward-looking statements as defined
     in Rule 175 under the Securities Act and Rule 3b-6 under the Securities
     Exchange Act of 1934, as amended (the "EXCHANGE ACT") and relevant legal
     decisions. Our intention with the use of such words as "may," "could,"
     "anticipates," "believes," "estimates," "expects," "intends," "plans" and
     other similar words is to identify forward-looking statements that involve
     risk and uncertainty. We designed this discussion of potential risks and
     uncertainties to highlight important factors that may impact our business
     and financial outlook. These forward-looking statements are subject to
     various factors that could cause our actual results to differ materially
     from the results anticipated in these statements. Such factors include our
     inability to predict and/or control:

2. The third paragraph set forth under "Where You Can Find More Information" on
page 4 of the Offering Memorandum is hereby deleted in its entirety.

3. The information set forth under "Summary -- The Exchange Offer -- Conditions
of the Exchange Offer" on page 6 of the Offering Memorandum is hereby deleted in
its entirety and replaced with the following:

     The Exchange Offer is not conditioned upon the valid tender of any minimum
     aggregate principal amount of old notes. However, the Exchange Offer is
     conditioned upon the absence of any of the following events:

     o   a business development, lawsuit or investigation which would likely
         have a material adverse affect on our business (subject to certain
         conditions);

     o   any general suspension of, or limitation on prices for, trading in
         securities in United States securities or financial markets;

     o   any significant impairment to the extension of credit by banking
         institutions, or to the regular trading of equity or debt securities in
         the United States; or

     o   the commencement or significant worsening of a war or armed hostilities
         or other national or international calamity, including, but not limited
         to, additional catastrophic terrorist attacks against the United States
         or its citizens (recent escalations of and ongoing hostility in Iraq
         and Afghanistan have not triggered this condition).

     We will not be required, but we reserve the right, to accept for exchange
     any old notes tendered (or, alternatively, we may terminate the Exchange
     Offer) if any condition of the Exchange Offer as described under "The
     Exchange Offer--Conditions" remains unsatisfied.



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4. The last sentence set forth under "The Exchange Offer -- Acceptance of the
Old Notes for Exchange; Delivery of New Notes" on page 58 of the Offering
Memorandum is amended by deleting the phrase "as promptly as practicable" and
substituting the word "promptly."

5. The information set forth under "The Exchange Offer -- Conditions" on pages
59 and 60 of the Offering Memorandum is hereby deleted in its entirety and
replaced with the following:

        Notwithstanding any other provision of the Exchange Offer, we will not
     be required to accept for exchange old notes tendered pursuant to the
     Exchange Offer and may terminate, extend or amend the Exchange Offer and
     may postpone the acceptance for exchange of old notes so tendered on or
     prior to the Expiration Date, if any of the following conditions has
     occurred, or the occurrence thereof has not been waived by us in our sole
     discretion, on or prior to the Expiration Date:

        o  there shall have been instituted, threatened or be pending any action
           or proceeding before or by any court, governmental, regulatory or
           administrative agency or instrumentality, or by any other person, in
           connection with the Exchange Offer, that is, or is reasonably likely
           to be, in our reasonable judgment, materially adverse to our
           business, operations, properties, condition (financial or otherwise),
           assets, liabilities or prospects, or which would or might, in our
           reasonable judgment, prohibit, prevent, restrict or delay
           consummation of the Exchange Offer; provided, however, that this
           condition shall not be deemed to apply to our previously announced
           United States Department of Justice investigation of round-trip
           trading at CMS MST and certain shareholder lawsuits as described in
           the Risk Factors;

        o  there shall have occurred any development which would, in our
           reasonable judgment, materially adversely affect our business
           (excluding actions or omissions to act by us that results in such
           development);

        o  an order, statute, rule, regulation, executive order, stay, decree,
           judgment or injunction shall have been proposed, enacted, entered,
           issued, promulgated, enforced or deemed applicable by any court or
           governmental, regulatory or administrative agency or instrumentality
           that, in our reasonable judgment, would or might prohibit, prevent,
           restrict or delay consummation of the Exchange Offer, or that is, or
           is reasonably likely to be, materially adverse to our business,
           operations, properties, condition (financial or otherwise), assets,
           liabilities or prospects; provided, however, that this condition
           shall not be deemed to apply to our previously announced United
           States Department of Justice investigation of round-trip trading at
           CMS MST and certain shareholder lawsuits as described in the Risk
           Factors;

        o  there shall have occurred or be likely to occur any event affecting
           our business or financial affairs, that, in our reasonable judgment,
           would or might prohibit, prevent, restrict or delay consummation of
           the Exchange Offer (excluding actions or omissions to act by us that
           results in such development); or

        o  the trustee of the old notes shall have objected in any respect to
           any action taken that could, in our reasonable judgment, adversely
           affect the consummation of the Exchange Offer, or shall have taken
           any action that challenges the validity or effectiveness of the
           procedures used by us in making the Exchange Offer or the acceptance
           of, or exchange for, the old notes; or

                  there shall have occurred:

           o      any general suspension of, or limitation on prices for,
                  trading in securities in United States securities or financial
                  markets;

           o      a material impairment in the trading market for debt
                  securities;

           o      a declaration of a banking moratorium or any suspension of
                  payments in respect to banks in the United States;




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           o      any limitation (whether or not mandatory) by any government or
                  governmental, administrative or regulatory authority or
                  agency, domestic or foreign, or other event that, in our
                  reasonable judgment, might affect the extension of credit by
                  banks or other lending institutions;

           o      a commencement or significant worsening of a war or armed
                  hostilities or other national or international calamity,
                  including but not limited to, additional catastrophic
                  terrorist attacks against the United States or its citizens
                  (recent escalations of and ongoing hostility in Iraq and
                  Afghanistan have not triggered this condition); or

           o      in the case of any of the foregoing existing on the date
                  hereof, a material acceleration or worsening thereof.

        The conditions to the Exchange Offer are for our sole benefit and may be
     asserted by us in our reasonable discretion or may be waived by us, in
     whole or in part, in our reasonable discretion, whether or not any other
     condition of the Exchange Offer also is waived. We have not made a decision
     as to what circumstances would lead us to waive any such condition, and any
     such waiver would depend on circumstances prevailing at the time of such
     waiver. Any determination by us concerning the events described in this
     section will be final and binding upon all persons. In the event we waive
     any condition to the Exchange Offer, we will waive such condition for all
     holders of old notes.

        Other than the United States federal and state securities laws we do not
     need to satisfy any regulatory requirements or obtain any regulatory
     approvals to conduct the Exchange Offer.

6. The last sentence of the second complete paragraph on page 9 of the Letter of
Transmittal is amended by deleting the phrase "as soon as practicable" and
substituting the word "promptly."


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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


November 29, 2004
--------------------------------
(Date)













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