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)

                  4.50% CUMULATIVE CONVERTIBLE PREFERRED STOCK
                    (LIQUIDATION PREFERENCE $50.00 PER SHARE)
                         (Title of Class of Securities)

                                    125896803
                      (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 **
            ----------------------------- ---------------------------
                       $250,000,000                $31,675.00
            ----------------------------- ---------------------------
* For the purpose of calculating the filing fee only, this amount is based on
the exchange for all 5,000,000 issued and outstanding shares of 4.50% Cumulative
Convertible Preferred Stock (liquidation preference $50.00 per share) for
5,000,000 new shares of 4.50% Cumulative Convertible Preferred Stock
(liquidation preference $50.00 per share).
** 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") up to 5,000,000 shares of CMS Energy's 4.50% Cumulative Convertible
Preferred Stock (liquidation preference $50.00 per share) (the "New Preferred
Stock") for a like number of shares of CMS Energy's issued and outstanding 4.50%
Cumulative Convertible Preferred Stock (liquidation preference $50.00 per share)
(the "Old Preferred Stock") 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
     number of shares of Old Preferred Stock. 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).


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        We will not be required, but we reserve the right, to accept for
     exchange any Old Preferred Stock 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.

4. The last sentence set forth under "The Exchange Offer -- Acceptance of the
Old Preferred Stock for Exchange; Delivery of New Preferred Stock" on page 51 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
52 and 53 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 Preferred Stock tendered pursuant to
     the Exchange Offer and may terminate, extend or amend the Exchange Offer
     and may postpone the acceptance for exchange of Old Preferred Stock 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 Preferred Stock 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 Preferred Stock; 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 Preferred Stock.

        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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