EXHIBIT 10 (a)
EXECUTION COPY
AMENDMENT NO. 1
     This AMENDMENT NO. 1, dated as of December 19, 2007 (this “Amendment”), is
by and among CMS Energy Corporation, a Michigan corporation (the “Borrower”),
the financial institutions parties to the “Credit Agreement” (defined below) as
lenders (the “Lenders”), and Citicorp USA, Inc. (“CUSA”), as administrative
agent (in such capacity, the “Administrative Agent”).
     WHEREAS, the Borrower, the Lenders, the Administrative Agent and CUSA, as
collateral agent, have entered into a Seventh Amended and Restated Credit
Agreement, dated as of April 2, 2007 (as amended, restated, supplemented or
otherwise modified from time to time, the “Credit Agreement”; capitalized terms
not defined herein are used as defined in the Credit Agreement);
     WHEREAS, the Borrowers, the requisite number of Lenders under Section 11.01
of the Credit Agreement and the Administrative Agent have agreed, subject to the
terms and conditions hereof, to amend the Credit Agreement as hereinafter set
forth.
     NOW, THEREFORE, in consideration of the premises set forth above, and for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the Borrowers, the requisite number of Lenders under
Section 11.01 of the Credit Agreement and the Administrative Agent agree as
follows:
     1. Amendment to Credit Agreement. Subject to the conditions set forth in
Paragraph 2 hereof, the Credit Agreement is hereby amended by amending and
restating the definition of “Consolidated EBITDA” set forth in Section 1.01 of
the Credit Agreement in its entirety as follows:
     “Consolidated EBITDA” means, with reference to any period, the pretax
operating income of the Borrower and its Subsidiaries (“Pretax Operating
Income”) for such period plus, to the extent included in determining Pretax
Operating Income (without duplication), (i) depreciation, depletion and
amortization, (ii) non-cash write-offs and write-downs, including, without
limitation, write-offs or write-downs related to the sale of assets, impairment
of assets and loss on contracts, (ii) non-cash gains or losses on mark-to-market
valuation of contracts and (iv) the cash or non-cash costs and expense charges
related to the termination, buy-out or amendment of electricity sales agreements
associated with Dearborn Industrial Generation, L.L.C. and/or CMS ERM Michigan
LLC, or other agreements related thereto in an aggregate amount not to exceed
$325,000,000 during the life of the Agreement, in each case in accordance with
GAAP consistently applied, all calculated for the Borrower and its Subsidiaries
on a consolidated basis for such period; provided, however, that Consolidated
EBITDA shall not include any operating income attributable to that portion of
the revenues of Consumers dedicated to the repayment of the Securitized Bonds.

 

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     2. Conditions to Effectiveness. The amendments contemplated by this
Amendment shall become effective upon the satisfaction of the following
conditions:
     (a) The Administrative Agent shall have received duly executed counterparts
hereof from each of the requisite number of Lenders under Section 11.01 of the
Credit Agreement, the Administrative Agent and the Borrower.
     (b) As of the date hereof, all representations and warranties contained in
this Amendment shall be true and correct in all material respects.
     (c) As of the date hereof no event shall have occurred and be continuing
which constitutes an Event of Default or a Default.
     3. Reference to and Effect on the Loan Documents. On and after the
effective date of this Amendment, each reference in the Credit Agreement to
“this Agreement”, “hereunder”, “hereof” or words of like import referring to the
Credit Agreement shall mean and be a reference to the Credit Agreement, as
modified by this Amendment, and each reference in the other Loan Documents to
“the Credit Agreement”, “thereunder”, “thereof” or words of like import
referring to the Credit Agreement shall mean and be a reference to the Credit
Agreement, as modified by this Amendment. Except as specifically set forth
above, the Credit Agreement and all other Loan Documents are and shall continue
to be in full force and effect and are hereby in all respects ratified and
confirmed.
     4. Miscellaneous.
     (a) Representations and Warranties. The Borrower represents and warrants
that:
     (i) The representations and warranties contained in Section 7.01 of the
Credit Agreement (other than those contained in subsection (f) thereof) are
correct in all material respects on and as of the date hereof (unless such
representation and warranty is made as of a specific date, in which case such
representation and warranty shall be true and correct as of such date), and no
event has occurred and is continuing that constitutes a Default or an Event of
Default;
     (ii) Each Loan Party is duly organized and validly existing and in good
standing under the laws of the jurisdiction of its organization and has the
requisite power and authority to execute, deliver and carry out the terms and
provisions of this Amendment and has taken or caused to be taken all necessary
corporate or limited liability company action to authorize the execution,
delivery and performance of this Amendment;
     (iii) No consent of any other person, including, without limitation,
shareholders or creditors of any Loan Party, and no action of, or filing with,
any governmental or public body or authority, is required to authorize, or is
otherwise required in connection with the execution, delivery and performance
of, this Amendment;

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     (iv) This Amendment has been duly executed and delivered by a duly
authorized officer on behalf of the Loan Parties party thereto, and constitutes
the legal, valid and binding obligations of each Loan Party, enforceable in
accordance with its terms, except as enforcement thereof may be subject to the
effect of any applicable (A) bankruptcy, insolvency, reorganization, moratorium
or similar law affecting creditors’ rights generally and (B) general principles
of equity (regardless of whether enforcement is sought in a proceeding in equity
or at law); and
     (v) The execution, delivery and performance of this Amendment will not
violate any law, statute or regulation applicable to any Loan Party or any order
or decree of any court or governmental instrumentality applicable to it, or
conflict with, or result in the breach of, or constitute a default under, any of
its contractual obligations.
     (b) No Waiver. Nothing herein contained shall constitute a waiver or be
deemed to be a waiver, of any existing Defaults or Events of Default, and the
Lenders and the Administrative Agent reserve all rights and remedies granted to
them by the Credit Agreement, by the other Loan Documents, by law and otherwise.
     (c) Costs and Expenses. The Borrower agrees to pay all reasonable costs and
out-of-pocket expenses (including, without limitation, reasonable attorneys’
fees) incurred by the Administrative Agent in connection with the preparation,
execution and enforcement of this Amendment.
     (d) Headings. Section headings in this Amendment are included herein for
convenience of reference only and shall not constitute a part of this Amendment
for any other purpose.
     (e) Counterparts. This Amendment may be executed in any number of separate
counterparts, each of which shall collectively and separately constitute one
agreement. Delivery of an executed counterpart of a signature page to this
Amendment by facsimile shall be effective as delivery of a manually executed
counterpart of this Amendment.
     (f) GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK (INCLUDING SECTION 5-1401 OF
THE GENERAL OBLIGATIONS LAWS OF THE STATE OF NEW YORK, BUT OTHERWISE WITHOUT
REGARD TO CONFLICTS OF LAW PRINCIPLES).
[signature pages follow]

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     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized, as of the date
first above written.

            CMS ENERGY CORPORATION, as Borrower
      By:   /s/ Laura L. Mountcastle         Name:   Laura L. Mountcastle       
Title:   Vice President & Treasurer        CITICORP USA, INC., as Administrative
Agent
      By:           Name:           Title:           CITIBANK, N.A., as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized, as of the date
first above written.

            CMS ENERGY CORPORATION, as Borrower
      By:           Name:           Title:           CITICORP USA, INC., as
Administrative Agent
      By:   /s/ Shannon Sweeney         Name:   Shannon Sweeney        Title:  
Vice President        CITIBANK, N.A., as a Lender
      By:   /s/ Shannon Sweeney         Name:   Shannon Sweeney        Title:  
Vice President     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            UNION BANK OF CALIFORNIA, N.A., as a Lender
      By:   /s/ Bryan Read         Name:   Bryan Read        Title:   Vice
President        BARCLAYS BANK PLC, as a Lender
      By:           Name:           Title:           JPMORGAN CHASE BANK, N.A.,
as a Lender
      By:           Name:           Title:           WACHOVIA BANK, NATIONAL
ASSOCIATION, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            UNION BANK OF CALIFORNIA, N.A., as a Lender
      By:           Name:           Title:           BARCLAYS BANK PLC, as a
Lender
      By:   /s/ Sydney G. Dennis         Name:   Sydney G. Dennis       
Title:   Director        JPMORGAN CHASE BANK, N.A., as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            UNION BANK OF CALIFORNIA, N.A., as a Lender
      By:           Name:           Title:           BARCLAYS BANK PLC, as a
Lender
      By:           Name:           Title:           JPMORGAN CHASE BANK, N.A.,
as a Lender
      By:   /s/ Michael DeForge         Name:   Michael DeForge        Title:  
Executive Director        WACHOVIA BANK, NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            UNION BANK OF CALIFORNIA, N.A., as a Lender
      By:           Name:           Title:           BARCLAYS BANK PLC, as a
Lender
      By:           Name:           Title:           JPMORDAN CHASE BANK, N.A.,
as a Lender
      By:           Name:           Title:           WACHOVIA BANK, NATIONAL
ASSOCIATION, as a Lender
      By:   /s/ FREDRICK W. PRICE         Name:   FREDRICK W. PRICE       
Title:   MANAGING DIRECTOR     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            MERRILL LYNCH BANK USA, as a Lender
      By:   /s/ Louis Alder         Name:   Louis Alder        Title:  
Director        BNP PARIBAS, as a Lender
      By:           Name:           Title:                 By:           Name:  
        Title:           SUNTRUST BANK, as a Lender
      By:           Name:           Title:           UBS LOAN FINANCE LLC, as a
Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            MERRILL LYNCH BANK USA, as a Lender
      By:           Name:           Title:           BNP PARIBAS, as a Lender
      By:   /s/ FRANCIS J. DELANEY         Name:   FRANCIS J. DELANEY        
Title:   Managing Director              By:   /s/ DENIS O’MEARA         Name:  
DENIS O’MEARA        Title:   Managing Director        SUNTRUST BANK, as a
Lender
      By:           Name:           Title:         UBS LOAN FINANCE LLC, as a
Lender
      By:           Name:           Title:      

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            MERRILL LYNCH BANK USA, as a Lender
      By:           Name:           Title:           BNP PARIBAS, as a Lender
      By:           Name:           Title:                 By:           Name:  
        Title:           SUNTRUST BANK, as a Lender
      By:   /s/ Yann Pirio         Name:   Yann Pirio        Title:   Vice
President        UBS LOAN FINANCE LLC, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            MERRILL LYNCH BANK USA, as a Lender
      By:           Name:           Title:           BNP PARIBAS, as a Lender
      By:           Name:           Title:                 By:           Name:  
        Title:           SUNTRUST BANK, as a Lender
      By:           Name:           Title:           UBS LOAN FINANCE LLC, as a
Lender
      By:   /s/ David B. Julie         Name:   David B. Julie         Title:  
Associate Director              By:   /s/ Irja R. Otsa         Name:   Irja R.
Otsa         Title:   Associate Director     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            DEUTSCHE BANK TRUST COMPANY AMERICAS, as a Lender
      By:   /s/ Illegible         Name:           Title:               By:   /s/
Scottye Lindsey         Name:   Scottye Lindsey        Title:   Director       
KEYBANK NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:           COMERICA BANK, as a Lender
      By:           Name:           Title:           LASALLE BANK, NATIONAL
ASSOCIATION, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            DEUTSCHE BANK TRUST COMPANY AMERICAS, as
a Lender
      By:           Name:           Title:               By:           Name:    
      Title:           KEYBANK NATIONAL ASSOCIATION, as a Lender
      By:   /s/ Sherrie I. Manson         Name:   Sherrie I. Manson        
Title:   Senior Vice President        COMERICA BANK, as a Lender
      By:           Name:           Title:           LASALLE BANK, NATIONAL
ASSOCIATION, as a
Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            DEUTSCHE BANK TRUST COMPANY AMERICAS, as a Lender
      By:           Name:           Title:               By:           Name:    
      Title:           KEYBANK NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:           COMERICA BANK, as a Lender
      By:   /s/ BLAKE ARNETT         Name:   BLAKE ARNETT        Title:   VICE
PRESIDENT        LASALLE BANK, NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            DEUTSCHE BANK TRUST COMPANY AMERICAS, as a Lender
      By:           Name:           Title:           By:           Name:        
  Title:           KEYBANK NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:           COMERICA BANK, as a Lender
      By:           Name:           Title:           LASALLE BANK MIDWEST, N.A.,
as a Lender
      By:   /s/ GREGORY E. CASTLE         Name:   GREGORY E. CASTLE       
Title:   FIRST VICE PRESIDENT     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            CREDIT SUISSE, CAYMAN ISLANDS BRANCH, as a Lender
      By:   /s/ Brian Caldwell         Name:   Brian Caldwell         Title:  
Director            By:   /s/ Laurence Lapeyre         Name:   Laurence Lapeyre
        Title:   Associate            FIFTH THIRD BANK, as a Lender 

    By:           Name:           Title:           WELLS FARGO BANK, NATIONAL
ASSOCIATION, as a Lender
      By:           Name:           Title:           THE BANK OF NOVA SCOTIA, as
a Lender
      By:           Name:           Title:           BAYERISCHE LANDESBANK, as a
Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            CREDIT SUISSE, CAYMAN ISLANDS BRANCH, as a Lender
      By:           Name:           Title:           FIFTH THIRD BANK, as a
Lender
      By:   /s/ BRIAN JELINSKI         Name:   BRIAN JELINSKI         Title:  
AVP        WELLS FARGO BANK, NATIONAL ASSOCIATION, as a Lender
      By:           Name:           Title:           THE BANK OF NOVA SCOTIA, as
a Lender
      By:           Name:           Title:           BAYERISCHE LANDESBANK, as a
Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            CREDIT SUISSE, CAYMAN ISLANDS BRANCH, as a Lender
      By:           Name:           Title:           FIFTH THIRD BANK, as a
Lender

      By:           Name:           Title:           WELLS FARGO BANK, NATIONAL
ASSOCIATION, as a Lender       By:           Name:           Title:          
THE BANK OF NOVA SCOTIA, as a Lender
      By:   /s/ Thane Rattew         Name:   Thane Rattew         Title:  
Managing Director        BAYERISCHE LANDESBANK, as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            CREDIT SUISSE, CAYMAN ISLANDS BRANCH, as a Lender
      By:           Name:           Title:           FIFTH THIRD BANK, as a
Lender
      By:           Name:           Title:           WELLS FARGO BANK, NATIONAL
ASSOCIATION, as a Lender
      By:           Name:           Title:           THE BANK OF NOVA SCOTIA, as
a Lender
      By:           Name:           Title:           BAYERISCHE LANDESBANK, as a
Lender
      By:   /s/ John Gregory                    /s/ Nikolal von Mengden      
Name:   John Gregory               Nikolal von Mengden        Title:   First
Vice President     Senior Vice President     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            HUNTINGTON NAITONAL BANK, as a Lender
      By:   /s/ Patrick Barbour         Name:   Patrick Barbour        Title:  
Vice President        GOLDMAN SACHS CREDIT PARTNERS, L.P., as a
Lender
      By:           Name:           Title:           SUMITOMO MITSUI BANKING
CORP., as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            HUNTINGTON NAITONAL BANK, as a Lender
      By:           Name:           Title:           GOLDMAN SACHS CREDIT
PARTNERS, L.P., as a Lender
      By:   /s/ Pedro Ramirez         Name:   Pedro Ramirez         Title:  
Authorized Signatory        SUMITOMO MITSUI BANKING CORP., as a Lender
      By:           Name:           Title:        

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)

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            SUMITOMO MITSUI BANKING CORP., as a Lender
      By:   /s/ Masakazu Hasegawa         Name:   Masakazu Hasegawa       
Title:   Joint General Manager     

Signature Page to Amendment No. 1 to
Seventh Amended and Restated Credit Agreement
(CMS Energy Corporation)