<PAGE>
                                                                  Exhibit 10(b)





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                             TXU ENERGY COMPANY LLC

                                   as Borrower
                   ------------------------------------------

                                 $1,000,000,000
                                CREDIT AGREEMENT


                           Dated as of April 26, 2004

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


                           CREDIT SUISSE FIRST BOSTON,
                             as Administrative Agent


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                           CREDIT SUISSE FIRST BOSTON
                        Sole Lead Arranger and Bookrunner

<PAGE>

                             TABLE OF CONTENTS
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                                                                                                            Page

                                    Article I
                            DEFINITIONS; CONSTRUCTION

         <S>           <C>                                                                                       <C>
         Section 1.01. Defined Terms..............................................................................1
         Section 1.02. Terms Generally...........................................................................15

                                   Article II
                                   THE CREDITS

         Section 2.01. Commitments...............................................................................15
         Section 2.02. Loans.....................................................................................16
         Section 2.03. Borrowing Procedure.......................................................................17
         Section 2.04. Fees......................................................................................17
         Section 2.05. Repayment of Loans; Evidence of Indebtedness..............................................18
         Section 2.06. Interest on Loans.........................................................................18
         Section 2.07. Alternate Rate of Interest................................................................19
         Section 2.08. Termination and Reduction of Commitments..................................................19
         Section 2.09. Prepayment................................................................................20
         Section 2.10. Reserve Requirements; Change in Circumstances.............................................20
         Section 2.11. Change in Legality........................................................................22
         Section 2.12. Pro Rata Treatment........................................................................22
         Section 2.13. Sharing of Setoffs........................................................................23
         Section 2.14. Payments..................................................................................23
         Section 2.15. Taxes.....................................................................................23
         Section 2.16. Assignment of Commitments Under Certain Circumstances.....................................26

                                   Article III
                         REPRESENTATIONS AND WARRANTIES

         Section 3.01. Organization; Powers......................................................................27
         Section 3.02. Authorization.............................................................................27
         Section 3.03. Enforceability............................................................................27
         Section 3.04. Governmental Approvals....................................................................27
         Section 3.05. Financial Statements......................................................................27
         Section 3.06. Litigation................................................................................28
         Section 3.07. Federal Reserve Regulations...............................................................28
         Section 3.08. Investment Company Act; Public Utility Holding Company Act................................28
         Section 3.09. No Material Misstatements.................................................................29
         Section 3.10. Taxes.....................................................................................29
         Section 3.11. Employee Benefit Plans....................................................................29
         Section 3.12. Significant Subsidiaries..................................................................29
         Section 3.13. Environmental Matters.....................................................................29

                                                  i
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         <S>           <C>                                                                                       <C>
         Section 3.14. Solvency..................................................................................30

                                   Article IV
                                   CONDITIONS

         Section 4.01. Initial Loans.............................................................................30
         Section 4.02. Conditions for All Loans..................................................................31

                                    Article V
                                    COVENANTS

         Section 5.01. Existence.................................................................................32
         Section 5.02. Compliance With Laws; Business and Properties.............................................32
         Section 5.03. Financial Statements, Reports, Etc........................................................32
         Section 5.04. Insurance.................................................................................34
         Section 5.05. Taxes, Etc................................................................................34
         Section 5.06. Maintaining Records; Access to Properties and Inspections.................................34
         Section 5.07. ERISA.....................................................................................34
         Section 5.08. Maintain Ratings..........................................................................35
         Section 5.09. Use of Proceeds...........................................................................35
         Section 5.10. Consolidations, Mergers, Sales and Acquisitions of Assets and Investments in Subsidiaries.35
         Section 5.11. Limitations on Liens......................................................................35
         Section 5.12. Fixed Charge Coverage Ratio...............................................................37
         Section 5.13. Debt to Total Capitalization Ratio........................................................38
         Section 5.14. Restrictive Agreements....................................................................38

                                   Article VI
                                EVENTS OF DEFAULT


                                   Article VII
                                    THE AGENT


                                  Article VIII
                                  MISCELLANEOUS

         Section 8.01. Notices...................................................................................43
         Section 8.02. Survival of Agreement.....................................................................43
         Section 8.03. Binding Effect............................................................................44
         Section 8.04. Successors and Assigns....................................................................44
         Section 8.05. Expenses; Indemnity.......................................................................46
         Section 8.06. Right of Setoff...........................................................................48
         Section 8.07. Applicable Law............................................................................48
         Section 8.08. Waivers; Amendment........................................................................48
         Section 8.09. Entire Agreement..........................................................................49
         Section 8.10. Severability..............................................................................49
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         <S>           <C>                                                                                      <C>
         Section 8.11. Counterparts..............................................................................50
         Section 8.12. Headings..................................................................................50
         Section 8.13. Interest Rate Limitation..................................................................50
         Section 8.14. Jurisdiction; Venue.......................................................................50
         Section 8.15. Confidentiality...........................................................................51


EXHIBITS AND SCHEDULES

Exhibit A           -      Form of Borrowing Request
Exhibit B           -      Form of Assignment and Assumption
Exhibit C           -      Form of Administrative Questionnaire

Schedule 2.01       -      Commitments
Schedule 5.14       -      Restrictive Agreements

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                                      iii
<PAGE>

                  CREDIT AGREEMENT (this "Agreement"), dated as of April 26,
                  2004, among TXU Energy Company LLC, a Delaware limited
                  liability company (the "Borrower"), the lenders listed in
                  Schedule 2.01 (together with their successors and assigns, the
                  "Lenders"), and Credit Suisse First Boston (together with its
                  successors, "CSFB"), as administrative agent for the Lenders
                  (in such capacity, the "Agent").

         The Borrower has requested the Lenders to provide the credit facility
hereinafter described in the amounts and on the terms and conditions set forth
herein, the Lenders have so agreed on the terms and conditions set forth herein,
and CSFB has agreed to act as administrative agent for the Lenders, on such
terms and conditions;

         Accordingly, the parties hereto agree as follows:

                                   ARTICLE I
                            DEFINITIONS; CONSTRUCTION

         SECTION 1.01. Defined Terms.

         As used in this Agreement, the following terms shall have the meanings
         specified below:

                  "ABR Borrowing" shall mean a Borrowing comprised of ABR Loans.

                  "ABR Loan" shall mean any Loan bearing interest at a rate
         determined by reference to the Alternate Base Rate in accordance with
         the provisions of Article II or any Eurodollar Loan converted (pursuant
         to Section 2.07 or 2.11(a)(ii)) to a loan bearing interest at a rate
         determined by reference to the Alternate Base Rate.

                  "Acquisition Date" shall mean the date as of which a person or
         group of related persons first acquires more than 30% of any
         outstanding class of Voting Shares of TXU (within the meaning of
         Section 13(d) or 14(d) of the Exchange Act, and the applicable rules
         and regulations thereunder).

                  "Administrative Fees" shall have the meaning assigned to such
         term in Section 2.04(b).

                  "Administrative Questionnaire" means an Administrative
         Questionnaire in the form of Exhibit C.

                  "Affiliate" shall mean, when used with respect to a specified
         person, another person that directly or indirectly controls or is
         controlled by or is under common control with the person specified.

                  "Agent" shall have the meaning given such term in the preamble
         hereto.

                  "Agreement" shall have the meaning given such term in the
         preamble hereto.
<PAGE>
                                                                             2

                  "Alternate Base Rate" shall mean, for any day, a rate per
         annum (rounded upwards, if necessary, to the next 1/16 of 1%) equal to
         the greater of (i) the Federal Funds Effective Rate in effect on such
         day plus 1/2 of 1% and (ii) the Prime Rate in effect on such day. For
         purposes hereof, "Prime Rate" shall mean the rate of interest per annum
         announced from time to time by CSFB as its prime rate in effect at its
         principal office in New York City; each change in the Prime Rate shall
         be effective on the date such change is publicly announced as
         effective; and "Federal Funds Effective Rate" shall mean, for any day,
         the weighted average of the rates on overnight Federal funds
         transactions with members of the Federal Reserve System arranged by
         Federal funds brokers, as released on the next succeeding Business Day
         by the Federal Reserve Bank of New York, or, if such rate is not so
         released for any day which is a Business Day, the arithmetic average,
         as determined by CSFB, of the quotations for the day of such
         transactions received by CSFB from three Federal funds brokers of
         recognized standing selected by it. If for any reason CSFB shall have
         determined (which determination shall be conclusive absent manifest
         error; provided that CSFB shall, upon request, provide to the Borrower
         a certificate setting forth in reasonable detail the basis for such
         determination) that it is unable to ascertain the Federal Funds
         Effective Rate for any reason, including the inability of CSFB to
         obtain sufficient quotations in accordance with the terms thereof, the
         Alternate Base Rate shall be determined without regard to clause (i) of
         the first sentence of this definition until the circumstances giving
         rise to such inability no longer exist. Any change in the Alternate
         Base Rate due to a change in the Prime Rate or the Federal Funds
         Effective Rate shall be effective on the effective date of such change
         in the Prime Rate or the Federal Funds Effective Rate, respectively.


                  "Applicable Margin" shall mean, for any ABR Loan 0% per annum
         and for any Eurodollar Loan 0.875% per annum, provided, however, at any
         time an Event of Default has occurred and is continuing, the Applicable
         Margins set forth herein shall be increased by 2.00%.

                  "Assignment and Assumption" shall mean an assignment and
         assumption entered into by a Lender and an assignee in the form of
         Exhibit B.

                  "Availability Period" shall have the meaning given such term
         in Section 2.01.

                   "Available Commitment" shall mean, for each Lender, the
         excess of such Lender's Commitment over the Loans made by such Lender.
         "Available Commitments" shall refer to the aggregate of the Lenders'
         Available Commitments hereunder.

                  "Board" shall mean the Board of Governors of the Federal
         Reserve System of the United States.

                  "Borrower" shall have the meaning given such term in the
         preamble hereto.

                  "Borrowing" shall mean a group of Loans of a single Type made
         by the Lenders on a single date and as to which a single Interest
         Period is in effect.
<PAGE>
                                                                             3

                  "Borrowing Request" shall mean a request made pursuant to
         Section 2.03 in the form of Exhibit A.

                  "Business Day" shall mean any day (other than a day that is a
         Saturday, Sunday or legal holiday in the State of New York) on which
         banks are open for business in New York City; provided, however, that,
         when used in connection with a Eurodollar Loan, the term "Business Day"
         shall also exclude any day on which banks are not open for dealings in
         dollar deposits in the London interbank market.

                  "a Change in Control" shall be deemed to have occurred if (i)
         any person or "group" (within the meaning of Section 13(d) or 14(d) of
         the Exchange Act, as amended) shall acquire beneficial ownership of
         more than 30% of any outstanding class of Voting Shares of TXU unless
         such acquisition shall have been approved prior to such acquisition
         date by a majority of Disinterested Directors of TXU or (ii) during any
         period of 12 consecutive months, a majority of the members of the board
         of directors of TXU cease to be composed of individuals (A) who were
         members of board of directors of TXU on the first day of such period,
         (B) whose election or nomination to the board of directors of TXU was
         approved by individuals referred to in clause (i) above constituting at
         the time of such election or nomination at least a majority of the
         board of directors of TXU or (C) whose election or nomination to the
         board of directors of TXU was approved by individuals referred to in
         clauses (i) and (ii) above constituting at the time of such election or
         nomination at least a majority of the board of directors of TXU.

                  "Code" shall mean the Internal Revenue Code of 1986, as the
         same may be amended from time to time.

                  "Commission" shall mean the Public Utility Commission of the
         State of Texas.

                  "Commitment" shall mean, with respect to each Lender, the
         commitment of such Lender in the amount set forth in Schedule 2.01
         hereto to make Loans, as such Commitment may be permanently terminated
         or reduced from time to time pursuant to Section 2.08 or modified from
         time to time pursuant to Section 8.04. The Commitment of each Lender
         shall automatically and permanently terminate on the Maturity Date if
         not terminated earlier pursuant to the terms hereof.

                  "Commitment Fee" shall have the meaning assigned to such term
         in Section 2.04(a).

                  "Commitment Fee Percentage" shall mean, at any time, 0.15% per
         annum.

                  "Consolidated Earnings Available for Fixed Charges" shall
         mean, for the Borrower for any twelve-month period, (i) consolidated
         net income, calculated after deducting preferred stock dividends and
         preferred securities distributions of its Subsidiaries, but before any
         extraordinary items and before the effect in such twelve-month period
         of any change in GAAP becoming effective after December 31, 2003, less
         (ii) allowances for equity funds used during construction to the extent
         that such allowances, taken as a whole, increased such consolidated net
         income, plus (iii) provisions for Federal income taxes, to the extent
<PAGE>
                                                                             4

         that such provisions, taken as a whole, decreased such consolidated net
         income, plus (iv) Consolidated Fixed Charges, all determined for such
         twelve-month period with respect to the Borrower and its Consolidated
         Subsidiaries on a consolidated basis; provided, however, that in
         computing Consolidated Earnings Available for Fixed Charges for any
         twelve-month period the following shall be added to the extent that the
         following decreased consolidated net income: (A) any non-cash one-time
         book losses relating to the sale or write-down of assets, (B) any
         losses incurred in connection with Preferred Membership Interest
         Repurchases, (C) any non-cash charges relating to the exchange of the
         Preferred Membership Interests for common stock of TXU, (D) any charges
         or write-offs resulting from the early retirement of debt, including
         premiums, relating to liability management activities, and (E) any
         charges or write-offs, including severance charges, relating to
         restructuring activities.

                  "Consolidated Fixed Charges" shall mean, for the Borrower for
         any twelve-month period, the sum (without duplication) of (i) interest
         expense (excluding any such expense (A) in respect of the amortization
         of debt discount relating to the Preferred Membership Interests, (B)
         incurred in connection with Preferred Membership Interest Repurchases
         and (C) any charges or write-offs resulting from the early retirement
         of debt relating to liability management activities, in each case to
         the extent included in the calculation of interest expense) and (ii)
         preferred stock dividends and preferred securities distributions
         (excluding any such dividends or distributions incurred in connection
         with Preferred Membership Interests Repurchases), all determined for
         such twelve-month period with respect to the Borrower and its
         Consolidated Subsidiaries on a consolidated basis.

                  "Consolidated Senior Debt" shall mean, for the Borrower, the
         Senior Debt of the Borrower and its Consolidated Subsidiaries
         determined on a consolidated basis, excluding, however, up to
         $400,000,000 in the aggregate at any time of determination of such
         Senior Debt described in clause (iii) of the definition of "Senior
         Debt".

                  "Consolidated Shareholders' Equity" shall mean, for the
         Borrower, the sum (without duplication) of (i) total common stock or
         common members' interest plus (ii) preferred stock or preferred
         members' interest not subject to mandatory redemption, each (in the
         case of clauses (i) and (ii)) determined with respect to the Borrower
         and its Consolidated Subsidiaries on a consolidated basis, plus (iii)
         Equity-Credit Preferred Securities in an aggregate liquidation
         preference amount not in excess of $1,000,000,000, plus (iv) Preferred
         Membership Interests, plus (v) any losses incurred in connection with
         Preferred Membership Interest Repurchases, provided, however, that in
         computing Consolidated Shareholders' Equity at any time, there shall be
         excluded any reduction in total common stock equity resulting from (A)
         charges for changes in accounting principles recorded in accordance
         with GAAP, (B) non-cash writedowns, one-time book losses or other
         charges, (C) any charges or write-offs resulting from the early
         retirement of debt, including premiums, relating to liability
         management activities, and (D) charges or write-offs, including
         severance charges, relating to restructuring activities, all determined
         for such twelve-month period with respect to the Borrower and its
         Consolidated Subsidiaries on a consolidated basis.
<PAGE>
                                                                             5


                  "Consolidated Subsidiary" of any person shall mean at any date
         any Subsidiary or other entity the accounts of which would be
         consolidated with those of such person in such person's consolidated
         financial statements as of such date.

                  "Consolidated Total Capitalization" shall mean, for the
         Borrower, the sum of (i) Consolidated Shareholders' Equity, (ii)
         Consolidated Senior Debt and (iii) the aggregate outstanding amount of
         Preferred Membership Interests.

                  "Controlled Group" shall mean all members of a controlled
         group of corporations and all trades or businesses (whether or not
         incorporated) under common control which, together with the Borrower,
         are treated as a single employer under Section 414(b) or 414(c) of the
         Code.

                  "CSFB" shall have the meaning given such term in the preamble
         hereto.

                  "Default" shall mean any event or condition, which upon
         notice, lapse of time or both would constitute an Event of Default.

                  "Disinterested Director" shall mean any member of the board of
         directors of TXU who is not affiliated, directly or indirectly, with,
         or appointed by, a person or group of related persons (other than TXU,
         any Subsidiary of TXU, or any pension, savings or other employee
         benefit plan for the benefit of employees of TXU and/or any Subsidiary
         of TXU) acquiring the beneficial ownership of more than 30% of the
         outstanding Voting Shares of TXU (within the meaning of Section 13(d)
         or 14(d) of the Exchange Act, and the applicable rules and regulations
         thereunder) and who either was a member of the board of directors of
         TXU prior to the Acquisition Date or was recommended for election by a
         majority of the Disinterested Directors in office prior to the
         Acquisition Date.

                  "dollars" or "$" shall mean lawful money of the United States
         of America.

                  "Equity-Credit Preferred Securities" shall mean securities,
         however denominated, (i) issued by the Borrower or a Consolidated
         Subsidiary of the Borrower, (ii) that are not subject to mandatory
         redemption or the underlying securities, if any, of which are not
         subject to mandatory redemption, (iii) that are perpetual or mature no
         less than 30 years from the date of issuance, (iv) the indebtedness
         issued in connection with which, including any guaranty, is subordinate
         in right of payment to the unsecured and unsubordinated indebtedness of
         the issuer of such indebtedness or guaranty, and (v) the terms of which
         permit the deferral of the payment of interest or distributions thereon
         to a date occurring after the Maturity Date.

                  "ERISA" shall mean the Employee Retirement Income Security Act
         of 1974, as the same may be amended from time to time.

                  "ERISA Affiliate" shall mean any trade or business (whether or
         not incorporated) that is a member of a group of (i) organizations
         described in Section 414(b) or (c) of the Code and (ii) solely for
         purposes of the Lien created under Section 412(n) of the Code,
         organizations described in Section 414(m) or (o) of the Code of which
         the Borrower is a member.
<PAGE>
                                                                             6

                  "ERISA Event" shall mean (i) any Reportable Event; (ii) the
         adoption of any amendment to a Plan that would require the provision of
         security pursuant to Section 401(a)(29) of the Code or Section 307 of
         ERISA; (iii) the incurrence of any liability under Title IV of ERISA
         with respect to the termination of any Plan or the withdrawal or
         partial withdrawal of the Borrower or any of its ERISA Affiliates from
         any Plan or Multiemployer Plan; (iv) the receipt by the Borrower or any
         ERISA Affiliate from the PBGC of any notice relating to the intention
         to terminate any Plan or Plans or to appoint a trustee to administer
         any Plan; (v) the receipt by the Borrower or any ERISA Affiliate of any
         notice concerning the imposition of Withdrawal Liability or a
         determination that a Multiemployer Plan is, or is expected to be,
         insolvent or in reorganization, within the meaning of Title IV of
         ERISA; (vi) the occurrence of a nonexempt "prohibited transaction" as
         defined in Section 4975(c) of the Code or Section 406 of ERISA with
         respect to which the Borrower or any of its Subsidiaries is liable; and
         (vii) any other similar event or condition with respect to a Plan or
         Multiemployer Plan that could result in liability of the Borrower other
         than a liability to pay premiums or benefits when due.

                  "Eurodollar Borrowing" shall mean a Borrowing comprised of
         Eurodollar Loans.

                  "Eurodollar Loan" shall mean any Loan bearing interest at a
         rate determined by reference to the LIBO Rate in accordance with the
         provisions of Article II.

                  "Event of Default" shall have the meaning assigned to such
         term in Article VI.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
         as amended.

                  "Federal Funds Effective Rate" shall have the meaning set
         forth in the definition of "Alternate Base Rate".

                  "Fees" shall mean the Commitment Fee, the Administrative Fees,
         and any other fees provided for in the Letter Agreements.

                  "Financial Officer" of any corporation or limited liability
         company shall mean the chief financial officer, principal accounting
         officer, treasurer, associate or assistant treasurer, or any
         responsible officer designated by one of the foregoing persons, of such
         corporation or limited liability company.

                  "GAAP" shall mean generally accepted accounting principles,
         applied on a consistent basis.

                  "Governmental Authority" shall mean any Federal, state, local
         or foreign court or governmental agency, authority, instrumentality or
         regulatory body.

                  "Holdings" shall mean TXU US Holdings Company, a Texas
         corporation, and its successors.

                  "Indebtedness" of any person shall mean (without duplication)
         all liabilities, obligations and indebtedness (whether contingent or
         otherwise) of such person (i) for borrowed money or evidenced by bonds,
         indentures, notes or other similar instruments, (ii) to pay the
<PAGE>
                                                                              7

         deferred purchase price of property or services, (iii) as lessee under
         leases that are recorded as capital leases, (iv) under reimbursement
         agreements or similar agreements with respect to the issuance of
         letters of credit (other than obligations in respect of letters of
         credit opened to provide for the payment of goods or services purchased
         in the ordinary course of business), (v) in respect of Indebtedness of
         others secured by (or for which the holder of such Indebtedness has an
         existing right, contingent or otherwise, to be secured by) a mortgage,
         lien, pledge, charge or other encumbrance on any asset of such person
         (with the Indebtedness of such person described in this clause (iii) to
         be valued at the book value, net of accumulated depreciation, of such
         asset of such person securing such Indebtedness of others), (vi) all
         net payment obligations of such person in respect of interest rate swap
         agreements, currency swap agreements and other similar agreements
         designed to hedge against fluctuations in interest rates or foreign
         exchange rates and (vii) under direct or indirect guaranties in respect
         of, and to purchase or otherwise acquire, or otherwise to assure a
         creditor against loss in respect of, liabilities, obligations or
         indebtedness of others of the kinds referred to in clauses (i) through
         (vi) above; provided, however, that for all purposes, the following
         shall be excluded from the definition of "Indebtedness": amounts
         payable from the Borrower to Oncor Electric Delivery Company in
         connection with nuclear decommissioning costs, excess mitigation
         credits, retail clawback or other regulatory transition issues.

                  "Interest Payment Date" shall mean, with respect to any Loan,
         the last day of the Interest Period applicable thereto and, in the case
         of a Eurodollar Loan with an Interest Period of more than three months'
         duration, each day that would have been an Interest Payment Date for
         such Loan, had successive Interest Periods of three months' duration
         been applicable to such Loan, and, in addition, the date of any
         prepayment of such Loan or conversion of such Loan to a Loan of a
         different Type.

                  "Interest Period" shall mean (i) as to any Eurodollar
         Borrowing, the period commencing on the date of such Borrowing and
         ending on the numerically corresponding day (or, if there is no
         numerically corresponding day, on the last day) in the calendar month
         that is 1, 2, 3 or 6 months thereafter; provided that, in the case of
         any Eurodollar Borrowing made during the 30-day period ending on the
         Maturity Date, such period may end on the seventh or fourteenth day
         thereafter, as the Borrower may elect, and (ii) as to any ABR
         Borrowing, the period commencing on the date of such Borrowing and
         ending on the earliest of (A) the next succeeding March 31, June 30,
         September 30 or December 31, (B) the Maturity Date, and (C) the date
         such Borrowing is repaid or prepaid in accordance with Section 2.05 or
         Section 2.09; provided, however, that if any Interest Period would end
         on a day other than a Business Day, such Interest Period shall be
         extended to the next succeeding Business Day unless, in the case of
         Eurodollar Loans only, such next succeeding Business Day would fall in
         the next calendar month, in which case such Interest Period shall end
         on the next preceding Business Day. Interest shall accrue from and
         including the first day of an Interest Period to but excluding the last
         day of such Interest Period.

                  "Lenders" shall have the meaning given such term in the
         preamble hereto.
<PAGE>
                                                                             8

                  "Letter Agreements" shall mean (i) the Engagement Letter,
         dated April 26, 2004, among Credit Suisse First Boston LLC, TXU, the
         Borrower and TXU Gas, (ii) the Commitment Letter, dated April 26, 2004,
         among CSFB, TXU, the Borrower and TXU Gas, and (iii) the Fee Letter,
         dated April 26, 2004, among CSFB, TXU, the Borrower and TXU Gas, each
         as amended, modified or supplemented from time to time.

                  "LIBO Rate" shall mean, with respect to any Eurodollar
         Borrowing for any Interest Period, the rate appearing on Page 3750 of
         the Telerate Service (or on any successor or substitute page of such
         service, or any successor to or substitute for such service, providing
         rate quotations comparable to those currently provided on such page of
         such service, as determined by CSFB from time to time for purposes of
         providing quotations of interest rates applicable to dollar deposits in
         the London interbank market) at approximately 11:00 a.m., London time,
         two Business Days prior to the commencement of such Interest Period as
         the rate for dollar deposits with a maturity comparable to such
         Interest Period. In the event that such rate is not available at such
         time for any reason, then the "LIBO Rate" with respect to such
         Eurodollar Borrowing for such Interest Period shall be the rate at
         which dollar deposits of $1,000,000 and for a maturity comparable to
         such Interest Period are offered by the principal London office of CSFB
         in immediately available funds in the London interbank market at
         approximately 11:00 a.m. London time, two Business Days prior to the
         commencement of such Interest Period.

                  "Lien" shall mean, with respect to any asset, any mortgage,
         lien, pledge, charge, security interest or encumbrance of any kind in
         respect of such asset. For the purposes of this Agreement, any person
         shall be deemed to own subject to a Lien any asset which it has
         acquired or holds subject to the interest of a vendor or lessor under
         any conditional sale agreement, capital lease or other title retention
         agreement relating to such asset.

                  "Loan" shall mean a loan made pursuant to Section 2.03,
         whether made as a Eurodollar Loan or as an ABR Loan.

                  "Mandatory Prepayment Amount" shall mean an amount equal to
         (i) 100% of the amount of Net Cash Proceeds received by any person plus
         (ii) 100% of the TXU Gas Net Cash Proceeds remaining, if any, after
         prepayment of the outstanding loans under, first, the TXU Corp.
         Agreement as required thereunder (unless in the case of this clause
         (ii) such prepayment would result in a violation of applicable law or
         other state or federal regulation or order or would result in a default
         or breach of any agreement or result in a breakage fee or cost or
         premium, then, in such case, the outstanding loans under the TXU Gas
         Agreement shall be prepaid first and the outstanding loans under the
         TXU Corp. Agreement shall be prepaid second) and, second, the TXU Gas
         Agreement as required thereunder, plus (iii) 100% of the TXU Australia
         Net Cash Proceeds remaining, if any, after prepayment of the
         outstanding loans under the TXU Corp. Agreement as required thereunder.

                  "Margin Regulations" shall mean Regulations T, U and X of the
         Board as from time to time in effect, and all official rulings and
         interpretations thereunder or thereof.
<PAGE>
                                                                             9


                  "Margin Stock" shall have the meaning given such term under
         Regulation U of the Board.

                  "Material Adverse Change" shall mean, a materially adverse
         change in the business, assets, operations or financial condition of
         the Borrower and its Subsidiaries taken as a whole that makes the
         Borrower unable to perform any of its obligations under this Agreement
         or that impairs the rights of, or benefits available to, the Lenders
         under this Agreement.

                  "Maturity Date" shall mean the earlier to occur of April 25,
         2005 and the date of termination or reduction in whole of the
         Commitments pursuant to Section 2.08 or Article VI.

                  "Multiemployer Plan" shall mean a multiemployer plan as
         defined in Section 4001(a)(3) of ERISA to which the Borrower or any
         ERISA Affiliate is making, or accruing an obligation to make,
         contributions, or has within any of the preceding five plan years made,
         or accrued an obligation to make, contributions.

                  "Net Cash Proceeds" shall mean, with respect to (i) any
         Securities Offering of the Borrower or any of its Subsidiaries or (ii)
         any sale, lease, transfer or other disposition of any equity interests
         in or any assets or other property of the Borrower or its Subsidiaries
         (other than TXU Fuel and its Subsidiaries), other than any individual
         sale, lease, transfer or other disposition made in the ordinary course
         of business in an amount of $5,000,000 or less, the aggregate amount of
         cash proceeds received from time to time by or on behalf of any person
         in connection with such transaction after deducting therefrom only (A)
         reasonable and customary brokerage commissions, underwriting fees and
         discounts, legal fees, finder's fees, advisory and arrangement fees and
         other similar fees and commissions and other transaction costs, (B) the
         amount of any Indebtedness (other than under this Agreement) that is
         required to be repaid upon such sale, lease, transfer or other
         disposition pursuant to the terms of any bank or credit facilities or
         other debt obligations, and (C) the amount of taxes payable in
         connection with or as a result of such transaction (calculated, in the
         case of income taxes, on a stand-alone basis), in each case to the
         extent, but only to the extent, that the amounts so deducted are paid
         or to be paid are properly attributable to such transaction or to the
         asset that is the subject thereof.

                  "Operating Agreements" shall mean (i) the Operating Agreement,
         dated April 28, 1978, as amended by the Modification of Operating
         Agreement, dated April 20, 1979, among TXU Mining and Holdings
         (formerly TXU Electric Company, successor to Dallas Power & Light
         Company, Texas Electric Service Company and Texas Power & Light
         Company) and the Borrower, TXU Energy Retail Company LP and TXU
         Generation Company LP (pursuant to the Assumption Agreement, dated
         December 31, 2001, by and among Holdings, the Borrower, TXU Energy
         Retail Company LP and TXU Generation Company LP) ("TXU Mining Operating
         Agreement"), and as it may be amended from time to time, or (ii) the
         Operating Agreement, dated December 15, 1976, between TXU Fuel and
         Dallas Power & Light Company, Texas Electric Service Company and Texas
         Power & Light Company ("TXU Fuel Operating Agreement"), as it may be
         amended from time to time; provided that no amendment of the TXU Mining
         Operating Agreement or the TXU Fuel Operating Agreement shall increase
         the scope of any Lien permitted under Section 5.11(j).
<PAGE>
                                                                             10

                  "PBGC" shall mean the Pension Benefit Guaranty Corporation or
         any entity succeeding to any or all of its functions under ERISA.

                  "Percentage" shall mean, for any Lender on any date of
         determination, the percentage obtained by dividing such Lender's
         Commitment on such date by the Total Commitment on such date.

                  "Permitted Encumbrances" shall mean, as to any person at any
         date, any of the following:

                  (a) (i) Liens for taxes, assessments or governmental charges
         not then delinquent and Liens for workers' compensation awards and
         similar obligations not then delinquent and undetermined Liens or
         charges incidental to construction, Liens for taxes, assessments or
         governmental charges then delinquent but the validity of which is being
         contested at the time by such person in good faith against which an
         adequate reserve has been established, with respect to which levy and
         execution thereon have been stayed and continue to be stayed and that
         do not impair the use of the property or the operation of such person's
         business, (ii) Liens incurred or created in connection with or to
         secure the performance of bids, tenders, contracts (other than for the
         payment of money), leases, statutory obligations, surety bonds or
         appeal bonds, and mechanics' or materialmen's Liens, assessments or
         similar encumbrances, the existence of which does not impair the use of
         the property subject thereto for the purposes for which it was
         acquired, and other Liens of like nature incurred or created in the
         ordinary course of business;

                  (b) Liens securing indebtedness, neither assumed nor
         guaranteed by such person nor on which it customarily pays interest,
         existing upon real estate or rights in or relating to real estate
         acquired by such person for any substation, transmission line,
         transportation line, distribution line, right of way or similar
         purpose;

                  (c) rights reserved to or vested in any municipality or public
         authority by the terms of any right, power, franchise, grant, license
         or permit, or by any provision of law, to terminate such right, power,
         franchise, grant, license or permit or to purchase or recapture or to
         designate a purchaser of any of the property of such person;

                  (d) rights reserved to or vested in others to take or receive
         any part of the power, gas, oil, coal, lignite or other minerals or
         timber generated, developed, manufactured or produced by, or grown on,
         or acquired with, any property of such person and Liens upon the
         production from property of power, gas, oil, coal, lignite or other
         minerals or timber, and the by-products and proceeds thereof, to secure
         the obligations to pay all or a part of the expenses of exploration,
         drilling, mining or development of such property only out of such
         production or proceeds;

                  (e) easements, restrictions, exceptions or reservations in any
          property and/or rights of way of such person for the purpose of roads,
          pipe lines, substations, transmission lines, transportation lines,
          distribution lines, removal of oil, gas, lignite, coal or other
          minerals or timber, and
<PAGE>
                                                                             11

          other like purposes, or for the joint or common use of real property,
          rights of way, facilities and/or equipment, and defects,
          irregularities and deficiencies in titles of any property and/or
          rights of way, which do not materially impair the use of such property
          and/or rights of way for the purposes for which such property and/or
          rights of way are held by such person;

                  (f) rights reserved to or vested in any municipality or public
         authority to use, control or regulate any property of such person;

                  (g) any obligations or duties, affecting the property of such
         person, to any municipality or public authority with respect to any
         franchise, grant, license or permit;

                  (h) as of any particular time any controls, Liens,
         restrictions, regulations, easements, exceptions or reservations of
         any municipality or public authority applying particularly to space
         satellites or nuclear fuel;

                  (i) any judgment Lien against such person securing a judgment
         for an amount not exceeding 25% of Consolidated Shareholders' Equity
         of such person, so long as the finality of such judgment is being
         contested by appropriate proceedings conducted in good faith and
         execution thereon is stayed;

                  (j) any Lien arising by reason of deposits with or giving of
         any form of security to any federal, state, municipal or other
         governmental department, commission, board, bureau, agency or
         instrumentality, domestic or foreign, for any purpose at any time as
         required by law or governmental regulation as a condition to the
         transaction of any business or the exercise of any privilege or
         license, or to enable such person to maintain self-insurance or to
         participate in any fund for liability on any insurance risks or in
         connection with workers' compensation, unemployment insurance, old age
         pensions or other social security or to share in the privileges or
         benefits required for companies participating in such arrangements; or

                  (k) any landlords' Lien on fixtures or movable property
         located on premises leased by such person in the ordinary course of
         business so long as the rent secured thereby is not in default.

                  "person" shall mean any natural person, corporation, business
         trust, joint venture, association, company, limited liability company,
         partnership or government, or any agency or political subdivision
         thereof.

                  "Plan" shall mean any employee pension benefit plan described
         under Section 3(2) of ERISA (other than a Multiemployer Plan) subject
         to the provisions of Title IV of ERISA that is maintained by the
         Borrower or any ERISA Affiliate.

                  "Preferred Membership Interest Repurchase" shall mean the
         repurchase by TXU, directly or indirectly, of all or a portion of the
         Preferred Membership Interest.
<PAGE>
                                                                            12

                  "Preferred Membership Interests" shall mean the $750,000,000
         aggregate liquidation preference amount of exchangeable preferred
         membership interests of the Borrower.

                  "Register" shall have the meaning given such term in Section
         8.04(d).

                  "Reportable Event" shall mean any reportable event as defined
         in Sections 4043(c)(1)-(8) of ERISA or the regulations issued
         thereunder (other than a reportable event for which the 30 day notice
         requirement has been waived) with respect to a Plan (other than a Plan
         maintained by an ERISA Affiliate that is considered an ERISA Affiliate
         only pursuant to subsection (m) or (o) of Code Section 414).

                  "Required Lenders" shall mean, at any time, Lenders having
         Commitments representing in excess of 50% of the Total Commitment or,
         (i) for purposes of acceleration pursuant to clause (ii) of the first
         paragraph of Article VI, or (ii) if the Total Commitment has been
         terminated, Lenders holding in excess of 50% of the aggregate principal
         amount of outstanding Loans.

                  "Responsible Officer" of any corporation shall mean any
         executive officer or Financial Officer of such corporation and any
         other officer or similar official thereof responsible for the
         administration of the obligations of such corporation in respect of
         this Agreement.

                  "SEC" shall mean the Securities and Exchange Commission.

                  "Securities Offering" of any person shall mean the public or
         private issuance or sale by such person or any Subsidiary of such
         person on or after the date hereof of any debt or equity securities,
         any securities convertible into or exchangeable for any debt or equity
         securities or any warrants, rights or options to acquire or subscribe
         for any debt or equity securities, excluding (i) any borrowings,
         drawings, refinancings, remarketings or refundings of bank or credit
         facilities or other debt instruments (including issuances of commercial
         paper) in existence on the date hereof, (ii) any Indebtedness under the
         TXU system money pool, (iii) any equity infusion (cash or non-cash)
         from TXU or any Subsidiary of TXU to such person or any Subsidiary of
         such person, (iv) any debt obligations by such person to TXU or any of
         its Subsidiaries that are subordinate in right of payment and
         performance to the obligations of the Borrower under this Agreement,
         (v) any debt obligations of the Subsidiaries of such person to such
         person and other Wholly Owned Subsidiaries of such person, and (vi) any
         issuances of equity securities of such person and its Subsidiaries to
         TXU or any other Subsidiary of TXU.

                  "Securities Repurchase" shall mean the repurchase by TXU,
         directly or indirectly, of the common stock, preference or preferred
         stock, preferred securities, equity units or debt securities of TXU or
         its Subsidiaries.

                  "Senior Debt" of any person shall mean (without duplication)
         (i) all Indebtedness of such person described in clauses (i) through
         (iii) of the definition of "Indebtedness", (ii) all Indebtedness of
         such person described in clause (iv) of the definition of
         "Indebtedness" in respect of unreimbursed drawings under letters of
<PAGE>
                                                                            13

         credit described in such clause (iv), and (iii) all direct or indirect
         guaranties of such person in respect of, and to purchase or otherwise
         acquire, or otherwise to assure a creditor against loss in respect of,
         liabilities, obligations or indebtedness of others of the kinds
         referred to in clauses (i) and (ii) above; provided, however, that in
         calculating "Senior Debt" of the Borrower, (A) the aggregate amount of
         Preferred Membership Interests outstanding shall be excluded and (B)
         any amount of Equity-Credit-Preferred Securities not included in the
         definition of "Consolidated Shareholders Equity" shall be included.

                  "Significant Disposition" shall mean a sale, lease,
         disposition or other transfer by the Borrower, or any Subsidiary of the
         Borrower, during any 12-month period, of assets constituting, either
         individually or in the aggregate with all other assets sold, leased,
         disposed or otherwise transferred by the Borrower or any Subsidiary
         thereof during such period, 10% or more of the assets of the Borrower
         and its Subsidiaries taken as a whole, excluding any such sale, lease,
         disposition or other transfer to a Wholly Owned Subsidiary of the
         Borrower.

                  "Significant Subsidiary" shall mean, at any time, any
         Subsidiary of the Borrower that as of such time has total assets in
         excess of 10% of the total assets of the Borrower and its Consolidated
         Subsidiaries.

                  "Solvent" shall mean, with respect to any person as of a
         particular date, that on such date such person is able to pay its debts
         and other liabilities, contingent obligations and other commitments as
         they mature in the normal course of business. In computing the amount
         of contingent liabilities at any time, it is intended that such
         liabilities will be computed as the amount which, in light of all the
         facts and circumstances existing at such time, represents the amount
         that can reasonably be expected to become an actual or matured
         liability.

                  "Subsidiary" shall mean, with respect to any person (the
         "parent"), any corporation or other entity of which securities or other
         ownership interests having ordinary voting power to elect a majority of
         the board of directors or other persons performing similar functions
         are at the time directly or indirectly owned by such parent.

                  "Substantial" shall mean an amount in excess of 10% of the
         consolidated assets of the Borrower and its Consolidated Subsidiaries
         taken as a whole.

                  "Transaction Costs" shall mean fees and expenses incurred by
         the Borrower in connection with the execution and delivery of this
         Agreement.

                  "Total Commitment" shall mean, at any time, the aggregate
         amount of Commitments of all the Lenders, as in effect at such time.
         The initial amount of the Total Commitment is $1,000,000,000.

                  "TXU" shall mean TXU Corp., a Texas corporation, and its
         successors.

                  "TXU Australia" shall mean TXU Australia (No. 1) Holdings
         Company, a Delaware corporation and a direct Wholly Owned Subsidiary of
         TXU, and its successors.
<PAGE>
                                                                             14

                  "TXU Australia Net Cash Proceeds" shall mean, with respect to
         (i) any Securities Offering by TXU Australia or its Subsidiaries or
         (ii) any sale, lease, transfer or other disposition of any equity
         interests in or any assets or other property of TXU Australia or its
         Subsidiaries (whether characterized as purchase price, an assumption of
         debt and equity contribution or otherwise), other than any individual
         sale, lease, transfer or other disposition made in the ordinary course
         of business in an amount of $5,000,000 or less, the aggregate amount of
         cash proceeds received from time to time by or on behalf of any person
         in connection with such transaction after deducting therefrom only (A)
         reasonable and customary brokerage commissions, underwriting fees and
         discounts, legal fees, finder's fees, advisory and arrangement fees and
         other similar fees and commissions and other transaction costs, (B) the
         amount of any Indebtedness (other than under this Agreement) that is
         required to be repaid upon such sale, lease, transfer or other
         disposition pursuant to the terms of any bank or credit facilities or
         other debt obligations, and (C) the amount of taxes payable in
         connection with or as a result of such transaction (calculated, in the
         case of income taxes, on a stand-alone basis), in each case to the
         extent, but only to the extent, that the amounts so deducted are paid
         or to be paid are properly attributable to such transaction or to the
         asset that is the subject thereof.

                  "TXU Corp. Agreement" shall mean the $700,000,000 Credit
         Agreement, dated as of April 26, 2004, among TXU, as borrower, the
         financial institutions parties thereto, as lenders, and CSFB, as
         administrative agent, as amended, modified or supplemented from time to
         time.

                  "TXU Corp. Net Cash Proceeds" shall mean "Net Cash Proceeds",
         as defined in the TXU Corp. Agreement.

                   "TXU Gas" shall mean TXU Gas Company, a Texas corporation,
         and its successors.

                  "TXU Gas Agreement" shall mean the $300,000,000 Credit
         Agreement, dated as of April 26, 2004, among TXU Gas, as borrower, the
         financial institutions parties thereto, as lenders, and CSFB, as
         administrative agent, as amended, modified or supplemented from time to
         time.

                  "TXU Gas Net Cash Proceeds" shall mean "Net Cash Proceeds", as
         defined in the TXU Gas Agreement.

                  "TXU Fuel" shall mean TXU Fuel Company, a Texas corporation,
         and its successors.

                  "TXU Mining" shall mean TXU Mining Company LP, a Texas limited
         partnership, and its successors.

                  "Type", when used in respect of any Loan or Borrowing, shall
         refer to the Rate by reference to which interest on such Loan or on the
         Loans comprising such Borrowing is determined. For purposes hereof,
         "Rate" shall include the LIBO Rate and the Alternate Base Rate.
<PAGE>
                                                                            15

                  "Voting Shares" shall mean, as to shares or other equity
         interests of a particular corporation or other type of person,
         outstanding shares of stock or other equity interests of any class of
         such corporation or other person entitled to vote in the election of
         directors or other comparable managers of such person, excluding shares
         or other interests entitled so to vote only upon the happening of some
         contingency.

                  "Wholly Owned Subsidiary" of any person shall mean any
         Consolidated Subsidiary of such person all the shares of common stock
         and other voting capital stock or other voting ownership interests
         having ordinary voting power to vote in the election of the board of
         directors or other governing body performing similar functions (except
         directors' qualifying shares) of which are at the time directly or
         indirectly owned by such person.

                  "Withdrawal Liability" shall mean liability of the Borrower
         established under Section 4201 of ERISA as a result of a complete or
         partial withdrawal from a Multiemployer Plan, as such terms are defined
         in Part I of Subtitle E of Title IV of ERISA.

         SECTION 1.02.  Terms Generally.

         The definitions in Section 1.01 shall apply equally to both the
singular and plural forms of the terms defined. Whenever the context may
require, any pronoun shall include the corresponding masculine, feminine and
neuter forms. The words "include," "includes" and "including" shall be deemed to
be followed by the phrase "without limitation." All references herein to
Articles, Sections, Exhibits and Schedules shall be deemed references to
Articles and Sections of, and Exhibits and Schedules to, this Agreement unless
the context shall otherwise require. Except as otherwise expressly provided
herein, all terms of an accounting or financial nature shall be construed in
accordance with GAAP, as in effect from time to time; provided, however, that
for purposes of determining compliance with any covenant set forth in Article V,
such terms shall be construed in accordance with GAAP as in effect on the date
hereof applied on a basis consistent with the application used in preparing the
Borrower's audited financial statements referred to in Section 3.05.

                                   ARTICLE II
                                   THE CREDITS

         SECTION 2.01. Commitments.

         Subject to the terms and conditions and relying upon the
representations and warranties herein set forth, each Lender agrees, severally
and not jointly, to make Loans to the Borrower at any time and from time to time
until 60 days after the date hereof (the "Availability Period") up to the amount
of such Lender's Available Commitment, subject, however, to the conditions that
(i) at no time shall Loans outstanding exceed the Total Commitment, (ii) at no
time shall any Lender's outstanding Loans exceed the amount of such Lender's
Commitment, and (iii) at no time shall the outstanding Loans available to the
Borrower exceed the Total Commitment. Within the foregoing limits, the Borrower
may borrow, pay or prepay Loans pursuant to Section 2.09 on and after the date
hereof and prior to the Maturity Date subject to the terms, conditions and
limitations set forth herein, provided, however, that once any amount is repaid
or prepaid in accordance with Section 2.09 (and excluding deemed repayments and
prepayments under Section 2.02(d)), such amount may not be reborrowed by the
Borrower.
<PAGE>
                                                                            16


         SECTION 2.02. Loans.

          (a) Each Loan shall be made as part of a Borrowing consisting of Loans
made by the Lenders ratably in accordance with their respective
Commitments; provided, however, that the failure of any Lender to make any
Loan shall not in itself relieve any other Lender of its obligation to lend
hereunder (it being understood, however, that no Lender shall be
responsible for the failure of any other Lender to make any Loan required
to be made by such other Lender). The Loans comprising any Borrowing shall
be in an aggregate principal amount that is an integral multiple of
$5,000,000 and not less than $25,000,000 (or an aggregate principal amount
equal to the remaining balance of the Available Commitments).

          (b) Each Borrowing shall be comprised entirely of Eurodollar Loans or
ABR Loans, as the Borrower may request pursuant to Section 2.03. Each
Lender may at its option make any Eurodollar Loan by causing any domestic
or foreign branch or Affiliate of such Lender to make such Loan; provided
that any exercise of such option shall not affect the obligation of the
Borrower to repay such Loan in accordance with the terms of this Agreement.
Borrowings of more than one Type may be outstanding at the same time.

          (c) Subject to paragraph (d) below, each Lender shall make each Loan
to be made by it hereunder on the proposed date thereof by wire transfer of
immediately available funds to the Agent in New York, New York, not later
than noon, New York City time, and the Agent shall by 2:00 p.m., New York
City time, credit the amounts so received to the account or accounts
specified from time to time in one or more notices delivered by the
Borrower to the Agent or, if a Borrowing shall not occur on such date
because any condition precedent herein specified shall not have been met,
return the amounts so received to the respective Lenders. Loans shall be
made by the Lenders pro rata in accordance with Section 2.12. Unless the
Agent shall have received notice from a Lender prior to the date of any
Borrowing that such Lender will not make available to the Agent such
Lender's portion of such Borrowing, the Agent may assume that such Lender
has made such portion available to the Agent on the date of such Borrowing
in accordance with this paragraph (c) and the Agent may, in reliance upon
such assumption, make available to the Borrower on such date a
corresponding amount. If and to the extent that such Lender shall not have
made such portion available to the Agent, such Lender and the Borrower
(without waiving any claim against such Lender for such Lender's failure to
make such portion available) severally agree to repay to the Agent
forthwith on demand such corresponding amount together with interest
thereon, for each day from the date such amount is made available to the
Borrower until the date such amount is repaid to the Agent, at (i) in the
case of the Borrower, the interest rate applicable at the time to the Loans
comprising such Borrowing and (ii) in the case of such Lender, the Federal
Funds Effective Rate. If such Lender shall repay to the Agent such
corresponding amount, such amount shall constitute such Lender's Loan as
part of such Borrowing for purposes of this Agreement.

          (d) The Borrower may refinance all or any part of any Borrowing with a
Borrowing of the same or a different Type, subject to the conditions and
limitations set forth in this Agreement. Any Borrowing or part thereof so
<PAGE>
                                                                            17


refinanced shall be deemed to be repaid or prepaid in accordance with
Section 2.05 or 2.09, as applicable, with the proceeds of a new Borrowing,
and the proceeds of the new Borrowing, to the extent they do not exceed the
principal amount of the Borrowing being refinanced, shall not be paid by
the Lenders to the Agent or by the Agent to the Borrower pursuant to
paragraph (c) above.

         SECTION 2.03. Borrowing Procedure.

         In order to request a Borrowing, the Borrower shall hand deliver or
telecopy to the Agent a duly completed Borrowing Request in the form of Exhibit
A (i) in the case of a Eurodollar Borrowing, not later than 11:00 a.m., New York
City time, three Business Days before such Borrowing, (ii) in the case of an ABR
Borrowing, not later than 11:00 a.m., New York City time, one Business Day
before such Borrowing, and (iii) in the case of the initial Borrowing, not later
than 3:00 p.m., New York City time, on the day of such Borrowing. Such notice
shall be irrevocable and shall in each case specify (A) whether the Borrowing
then being requested is to be a Eurodollar Borrowing or an ABR Borrowing, (B)
the date of such Borrowing (which shall be a Business Day) and the amount
thereof, (C) if such Borrowing is to be a Eurodollar Borrowing, the Interest
Period with respect thereto, which shall not end after the Maturity Date, and
(D) the location and number of the Borrower's account to which funds are to be
disbursed, which shall comply with the requirements of this Agreement. If no
election as to the Type of Borrowing is specified in any such notice, then the
requested Borrowing shall be deemed an ABR Borrowing. If no Interest Period with
respect to any Eurodollar Borrowing is specified in any such notice, then the
Borrower shall be deemed to have selected an Interest Period of one month's
duration (subject to the limitations set forth in the definition of "Interest
Period"). If the Borrower shall not have given notice in accordance with this
Section 2.03 of its election to refinance a Borrowing prior to the end of the
Interest Period in effect for such Borrowing, then the Borrower shall (unless
such Borrowing is repaid at the end of such Interest Period) be deemed to have
given notice of an election to refinance such Borrowing with an ABR Borrowing.
Notwithstanding any other provision of this Agreement to the contrary, no
Borrowing shall be requested if the Interest Period with respect thereto would
end after the Maturity Date. The Agent shall promptly advise the Lenders of any
notice given pursuant to this Section 2.03 and of each Lender's portion of the
requested Borrowing.

         SECTION 2.04.     Fees.

          (a) The Borrower agrees to pay to each Lender, through the Agent, on
each last day of the month following March 31, June 30, September 30 and
December 31 (with the first payment being due on April 30, 2004) and on
each date on which the Commitment of such Lender shall be terminated or
reduced as provided herein, a commitment fee (a "Commitment Fee"), at a
rate per annum equal to the Commitment Fee Percentage from time to time in
effect on the unused portion of the Commitment of such Lender during the
preceding quarter (or other period commencing on the date of this Agreement
or ending on the Maturity Date or any date on which the Commitment of such
Lender shall be terminated). All Commitment Fees shall be computed on the
basis of the actual number of days elapsed in a year of 360 days. The
Commitment Fee due to each Lender shall commence to accrue on the date of
this Agreement, and shall cease to accrue on the date of termination of the
Commitment of such Lender as provided herein.
<PAGE>
                                                                            18


          (b) The Borrower agrees to pay the Agent the fees from time to time
payable to it in its capacity as Agent pursuant to the Letter Agreements
(the "Administrative Fees").

          (c) All Fees shall be paid on the dates due, in immediately available
funds, to the Agent for distribution, if and as appropriate, among the
Lenders. Once paid, none of the Fees shall be refundable under any
circumstances.

          SECTION 2.05.     Repayment of Loans; Evidence of Indebtedness.

          (a) The outstanding principal balance of each Loan shall be due and
payable on the last day of the Interest Period applicable thereto and on
the Maturity Date.

          (b) Each Lender shall maintain in accordance with its usual practice
an account or accounts evidencing the indebtedness to such Lender resulting
from each Loan made by such Lender from time to time, including the amounts
of principal and interest payable and paid to such Lender from time to time
under this Agreement.

          (c) The Agent shall maintain accounts in which it will record (i) the
amount of each Loan made hereunder, the Type of each Loan made and the
Interest Period applicable thereto, (ii) the amount of any principal or
interest due and payable or to become due and payable from the Borrower to
each Lender hereunder and (iii) the amount of any sum received by the Agent
hereunder from the Borrower and each Lender's share thereof.

          (d) The entries made in the accounts maintained pursuant to paragraphs
(b) and (c) of this Section 2.05 shall, to the extent permitted by
applicable law, be prima facie evidence of the existence and amounts of the
obligations therein recorded; provided, however, that the failure of any
Lender or the Agent to maintain such accounts or any error therein shall
not in any manner affect the obligations of the Borrower to repay the
outstanding Loans in accordance with their terms.

          SECTION 2.06. Interest on Loans.

         (a) The Loans comprising each Eurodollar Borrowing shall bear interest
(computed on the basis of the actual number of days elapsed over a year of
360 days) at a rate per annum equal to the LIBO Rate for the Interest
Period in effect for such Borrowing plus the Applicable Margin from time to
time in effect.

         (b) The Loans comprising each ABR Borrowing shall bear interest
(computed on the basis of the actual number of days elapsed over a year of
(i) 365 or 366 days, as the case may be, for periods during which the
Alternate Base Rate is determined by reference to the Prime Rate and (ii)
360 days for other periods) at a rate per annum equal to the Alternate Base
Rate plus the Applicable Margin from time to time in effect.

         (c) Interest on each Loan shall be payable on each Interest Payment
Date applicable to such Loan except as otherwise provided in this
Agreement. The applicable LIBO Rate or Alternate Base Rate for each
Interest Period or day within an Interest Period, as the case may be, shall
be determined by CSFB, and such determination shall be conclusive absent
manifest error, provided that CSFB shall, upon request, provide to the
Borrower a certificate setting forth in reasonable detail the basis for
such determination.
<PAGE>
                                                                            19


         SECTION 2.07. Alternate Rate of Interest.

         In the event, and on each occasion, that on the day two Business Days
prior to the commencement of any Interest Period for a Eurodollar Borrowing the
Agent shall have determined (i) that dollar deposits in the principal amounts of
the Eurodollar Loans comprising such Borrowing are not generally available in
the London interbank market or (ii) that reasonable means do not exist for
ascertaining the LIBO Rate, the Agent shall, as soon as practicable thereafter,
give telecopy notice of such determination to the Borrower and the Lenders. In
the event of any such determination under clause (i) or (ii) above, until the
Agent shall have advised the Borrower and the Lenders that the circumstances
giving rise to such notice no longer exist, any request by the Borrower for a
Eurodollar Borrowing pursuant to Section 2.03 shall be deemed to be a request
for an ABR Borrowing. In the event the Required Lenders notify the Agent that
the rates at which dollar deposits are being offered will not adequately and
fairly reflect the cost to such Lenders of making or maintaining Eurodollar
Loans during such Interest Period, the Agent shall notify the Borrower of such
notice and until the Required Lenders shall have advised the Agent that the
circumstances giving rise to such notice no longer exist, any request by the
Borrower for a Eurodollar Borrowing shall be deemed a request for an ABR
Borrowing. Each determination by the Agent hereunder shall be made in good faith
and shall be conclusive absent manifest error; provided that the Agent, shall,
upon request, provide to the Borrower a certificate setting forth in reasonable
detail the basis for such determination.

         SECTION 2.08. Termination and Reduction of Commitments.

         (a) The Commitments shall automatically terminate on the Maturity Date.

         (b) On each day following the last day of the Availability Period on
which the Total Commitment shall exceed the aggregate principal amount of
Loans outstanding, the Total Commitment shall automatically reduce by an
amount equal to such excess.

         (c) Upon at least two Business Days' prior irrevocable written notice
to the Agent, the Borrower may at any time in whole permanently terminate, or
from time to time in part permanently reduce, the Total Commitment; provided,
however, that (i) each partial reduction of the Total Commitment shall be in an
integral multiple of $10,000,000 and in a minimum principal amount of
$10,000,000 and (ii) no such termination or reduction shall be made that would
reduce the Total Commitment to an amount less than (1) the aggregate amount of
outstanding Loans on the date of such termination or reduction (after giving
effect to any prepayment made pursuant to Section 2.09) or (2) $50,000,000,
unless the result of such termination or reduction referred to in this clause
(2) is to reduce the Total Commitment to $0. The Agent shall advise the Lenders
of any notice given pursuant to this Section 2.08(c) and of each Lender's
portion of any such termination or reduction of the Total Commitment.

         (d) Each reduction in the Total Commitment hereunder shall be made
ratably among the Lenders in accordance with their respective Commitments. The
Borrower shall pay to the Agent for the account of the Lenders, on the date of
each termination or reduction of the Total Commitment, the Commitment Fees on
the amount of the Commitments so terminated or reduced accrued through the date
of such termination or reduction.
<PAGE>
                                                                             20


         SECTION 2.09. Prepayment.

         (a) Optional. The Borrower shall have the right at any time and from
time to time to prepay any Borrowing, in whole or in part, upon giving telecopy
notice (or telephone notice promptly confirmed by telecopy) to the Agent:
(i) before 11:00 a.m., New York City time, three Business Days prior to
prepayment, in the case of Eurodollar Loans, and (ii) before 11:00 a.m., New
York City time, one Business Day prior to prepayment, in the case of ABR Loans;
provided, however, that each partial prepayment shall be in an amount which is
an integral multiple of $10,000,000 and not less than $10,000,000. Each notice
of prepayment shall specify the prepayment date and the principal amount of
each Borrowing (or portion thereof) to be prepaid, shall be irrevocable and
shall commit the Borrower to prepay such Borrowing (or portion thereof) by the
amount stated therein on the date stated therein.

         (b) Mandatory. On the date of receipt by (i) the Borrower or any other
person of any Net Cash Proceeds, (ii) TXU Australia or any other person of any
TXU Australia Net Cash Proceeds, or (iii) TXU Gas or any other person of any
TXU Gas Net Cash Proceeds, the Borrower shall prepay the Loans, in an amount
equal to the Mandatory Prepayment Amount, together with accrued interest on
such Loans to the date of such prepayment on the principal amount prepaid.

         (c) All prepayments under this Section 2.09 shall be subject to Section
8.05 but otherwise without premium or penalty. All prepayments under this
Section 2.09 shall be accompanied by accrued interest on the principal amount
being prepaid to the date of payment.

         SECTION 2.10. Reserve Requirements; Change in Circumstances.

         (a) Notwithstanding any other provision herein, if after the date of
this Agreement any change in applicable law or regulation or in the
interpretation or administration thereof by any Governmental Authority charged
with the interpretation or administration thereof (whether or not having the
force of law) shall change the basis of taxation of payments to any Lender
hereunder (except for changes in respect of taxes on the overall net income of
such Lender (as the case may be) or its lending office imposed by the
jurisdiction in which such Lender's principal executive office or lending office
is located), or shall result in the imposition, modification or applicability of
any reserve, special deposit or similar requirement against assets of, deposits
with or for the account of or credit extended by any Lender or shall result in
the imposition on any Lender or the London interbank market of any other
condition affecting this Agreement, such Lender's Commitment or any Loan (other
than an ABR Loan) made by such Lender, and the result of any of the foregoing
shall be to increase the cost to such Lender of making or maintaining any
outstanding Loans (other than an ABR Loan) or to reduce the amount of any sum
received or receivable by such Lender hereunder (whether of principal, interest
or otherwise) by an amount deemed by such Lender to be material, then the
Borrower shall, upon receipt of the notice and certificate provided for in
Section 2.10(c), promptly pay to such Lender such additional amount or amounts
as will compensate such Lender for such additional costs incurred or reduction
suffered.
<PAGE>
                                                                             21


         (b) If any Lender shall have determined that the adoption of any law,
rule, regulation or guideline arising out of the July 1988 report of the Basle
Committee on Banking Regulations and Supervisory Practices entitled
"International Convergence of Capital Measurement and Capital Standards," or the
adoption after the date hereof of any other law, rule, regulation or guideline
regarding capital adequacy, or any change in any of the foregoing or in the
interpretation or administration of any of the foregoing by any Governmental
Authority, central bank or comparable agency charged with the interpretation or
administration thereof, or compliance by any Lender (or any lending office of
such Lender) or any Lender's holding company with any request or directive
regarding capital adequacy (whether or not having the force of law) of any such
authority, central bank or comparable agency, has or would have the effect of
reducing the rate of return on such Lender's capital or on the capital of such
Lender's holding company, if any, as a consequence of this Agreement, such
Lender's Commitment or the Loans made by such Lender pursuant hereto to a level
below that which such Lender or such Lender's holding company could have
achieved but for such adoption, change or compliance (taking into consideration
such Lender's policies and the policies of such Lender's holding company with
respect to capital adequacy) by an amount deemed by such Lender to be material,
then from time to time such additional amount or amounts as will compensate such
Lender for any such reduction suffered will be paid to such Lender by the
Borrower. It is acknowledged that this Agreement is being entered into by the
Lenders on the understanding that the Lenders will not be required to maintain
capital against their Commitments under currently applicable laws, regulations
and regulatory guidelines. In the event the Lenders shall otherwise determine
that such understanding is incorrect, it is agreed that the Lenders, will be
entitled to make claims under this paragraph (b) based upon market requirements
prevailing on the date hereof for commitments under comparable credit facilities
against which capital is required to be maintained.

         (c) A certificate of each Lender setting forth such amount or amounts
as shall be necessary to compensate such Lender or its holding company as
specified in paragraph (a) or (b) above, as the case may be, and containing an
explanation in reasonable detail of the manner in which such amount or amounts
shall have been determined, shall be delivered to the Borrower and shall be
conclusive absent manifest error. The Borrower shall pay each Lender the amount
shown as due on any such certificate delivered by it within 10 days after its
receipt of the same. Each Lender shall give prompt notice to the Borrower of any
event of which it has knowledge, occurring after the date hereof, that it has
determined will require compensation by the Borrower pursuant to this Section;
provided, however, that failure by such Lender to give such notice shall not
constitute a waiver of such Lender's right to demand compensation hereunder.

         (d) Failure on the part of any Lender to demand compensation for any
increased costs or reduction in amounts received or receivable or reduction in
return on capital with respect to any period shall not constitute a waiver of
such Lender's right to demand compensation with respect to such period or any
other period; provided, however, that no Lender shall be entitled to
compensation under this Section 2.10 for any costs incurred or reductions
suffered with respect to any date unless it shall have notified the Borrower
that it will demand compensation for such costs or reductions under paragraph
(c) above not more than 90 days after the later of (i) such date and (ii) the
date on which it shall have become aware of such costs or reductions. The
protection of this Section shall be available to each Lender regardless of any
possible contention of the invalidity or inapplicability of the law, rule,
regulation, guideline or other change or condition which shall have occurred or
been imposed.
<PAGE>
                                                                        22

         (e) Each Lender agrees that it will designate a different lending
office if such designation will avoid the need for, or reduce the amount of,
such compensation and will not, in the reasonable judgment of such Lender be
disadvantageous to such Lender.

         SECTION 2.11. Change in Legality.

         (a)  Notwithstanding any other provision herein, if any change in any
law or regulation or in the interpretation thereof by any Governmental
Authority charged with the administration or interpretation thereof
shall make it unlawful for any Lender to make or maintain any
Eurodollar Loan or to give effect to its obligations as contemplated
hereby with respect to any Eurodollar Loan, then, by written notice to
the Borrower and to the Agent, such Lender may:

              (i)  declare that Eurodollar Loans will not thereafter be made by
         such Lender hereunder, whereupon any request for a Eurodollar Borrowing
         shall, as to such Lender only, be deemed a request for an ABR Loan
         unless such declaration shall be subsequently withdrawn (any Lender
         delivering such a declaration hereby agreeing to withdraw such
         declaration promptly upon determining that such event of illegality no
         longer exists); and

              (ii) require that all outstanding Eurodollar Loans made by it be
         converted to ABR Loans, in which event all such Eurodollar Loans shall
         be automatically converted to ABR Loans as of the effective date of
         such notice as provided in paragraph (b) below.

In the event any Lender shall exercise its rights under (i) or (ii) above, all
payments and prepayments of principal which would otherwise have been applied to
repay the Eurodollar Loans that would have been made by such Lender or the
converted Eurodollar Loans of such Lender shall instead be applied to repay the
ABR Loans made by such Lender in lieu of, or resulting from the conversion of,
such Eurodollar Loans.

         (b) For purposes of this Section 2.11, a notice by any Lender shall be
effective as to each Eurodollar Loan, if lawful, on the last day of the Interest
Period currently applicable to such Eurodollar Loan; in all other cases such
notice shall be effective on the date of receipt.

         SECTION 2.12. Pro Rata Treatment.

         Except as required under Sections 2.11 and 2.16, each Borrowing, each
payment or prepayment of principal of any Borrowing, each payment of interest on
the Loans, each payment of the Commitment Fees, each reduction of the
Commitments and each refinancing or conversion of any Borrowing with a Borrowing
of any Type, shall be allocated pro rata among the Lenders in accordance with
their respective Commitments (or, if such Commitments shall have expired or been
terminated, in accordance with the respective principal amounts of their
outstanding Loans). Each Lender agrees that in computing such Lender's portion
of any Borrowing to be made hereunder, the Agent may, in its discretion, round
each Lender's percentage of such Borrowing to the next higher or lower whole
dollar amount.
<PAGE>
                                                                            23


         SECTION 2.13. Sharing of Setoffs.

         Each Lender agrees that if it shall, through the exercise of a right of
banker's lien, setoff or counterclaim, or pursuant to a secured claim under
Section 506 of Title 11 of the United States Bankruptcy Code or other security
or interest arising from, or in lieu of, such secured claim, received by such
Lender under any applicable bankruptcy, insolvency or other similar law or
otherwise, or by any other means, obtain payment (voluntary or involuntary) in
respect of any Loans as a result of which the unpaid principal portion of its
Loans shall be proportionately less than the unpaid principal portion of the
Loans of any other Lender, it shall be deemed simultaneously to have purchased
from such other Lender at face value, and shall promptly pay to such other
Lender the purchase price for, a participation in the Loans of such other
Lender, so that the aggregate unpaid principal amount of the Loans and
participations in the Loans held by each Lender shall be in the same proportion
to the aggregate unpaid principal amount of all Loans then outstanding as the
principal amount of its Loans prior to such exercise of banker's lien, setoff or
counterclaim or other event was to the principal amount of all Loans outstanding
prior to such exercise of banker's lien, setoff or counterclaim or other event;
provided, however, that, if any such purchase or purchases or adjustments shall
be made pursuant to this Section 2.13 and the payment giving rise thereto shall
thereafter be recovered, such purchase or purchases or adjustments shall be
rescinded to the extent of such recovery and the purchase price or prices or
adjustment restored without interest. The Borrower expressly consents to the
foregoing arrangements and agrees that any Lender holding a participation in a
Loan deemed to have been so purchased may exercise any and all rights of
banker's lien, setoff or counterclaim with respect to any and all moneys owing
by the Borrower to such Lender by reason thereof as fully as if such Lender had
made a Loan in the amount of such participation.

         SECTION 2.14. Payments.

         (a) The Borrower shall make each payment (including principal of or
interest on any outstanding Loans or any Fees or other amounts) hereunder
from an account in the United States not later than 12:00 noon, New York
City time, on the date when due in dollars to the Agent at its offices at
Eleven Madison Avenue, New York, New York 10010-3629, in immediately
available funds as instructed from time to time by the Agent. Each such
payment shall be made without off-set, deduction or counterclaim, provided,
that the foregoing shall not constitute a relinquishment or waiver of the
Borrower's rights to any independent claim that the Borrower may have
against the Agent or any Lender.

         (b) Whenever any payment (including principal of or interest on any
outstanding Loans or any Fees or other amounts) hereunder shall become due,
or otherwise would occur, on a day that is not a Business Day, such payment
may be made on the next succeeding Business Day, and such extension of time
shall in such case be included in the computation of interest or Fees, if
applicable.

         SECTION 2.15.  Taxes.

         (a) Any and all payments of principal and interest on any of the
outstanding Loans, or of any Fees or indemnity or expense reimbursements by
the Borrower hereunder ("Borrower Payments") shall be made, in accordance
with Section 2.14, free and clear of and without deduction for any and all
<PAGE>
                                                                             24


current or future United States Federal, state and local taxes, levies,
imposts, deductions, charges or withholdings, and all liabilities with
respect to the Borrower Payments, but only to the extent reasonably
attributable to the Borrower Payments, excluding (i) income taxes imposed
on the net income of the Agent or any Lender (or any transferee or assignee
thereof, including a participation holder (any such entity a "Transferee"))
and (ii) franchise taxes imposed on the net income of the Agent or any
Lender (or Transferee), in each case by the jurisdiction under the laws of
which the Agent or such Lender (or Transferee) is organized or doing
business through offices or branches located therein, or any political
subdivision thereof (all such nonexcluded taxes, levies, imposts,
deductions, charges, withholdings and liabilities, collectively or
individually, "Taxes"). If the Borrower shall be required to deduct any
Taxes from or in respect of any sum payable hereunder to any Lender (or any
Transferee) or the Agent, (i) the sum payable shall be increased by the
amount (an "additional amount") necessary so that after making all required
deductions (including deductions applicable to additional amounts payable
under this Section 2.15) such Lender (or Transferee) or the Agent (as the
case may be) shall receive an amount equal to the sum it would have
received had no such deductions been made, (ii) the Borrower shall make
such deductions and (iii) the Borrower shall pay the full amount deducted
to the relevant Governmental Authority in accordance with applicable law.

         (b) In addition, the Borrower shall pay to the relevant United States
Governmental Authority in accordance with applicable law any current or
future stamp or documentary taxes or any other excise or property taxes,
charges or similar levies that arise from any payment made hereunder or
from the execution, delivery or registration of, or otherwise with respect
to, this Agreement or the Letter Agreements ("Other Taxes").

         (c) The Borrower shall indemnify each Lender (or Transferee thereof)
and the Agent for the full amount of Taxes and Other Taxes with respect to
Borrower Payments paid by such person, and any liability (including
penalties, interest and expenses (including reasonable attorney's fees and
expenses)) arising therefrom or with respect thereto, whether or not such
Taxes or Other Taxes were correctly or legally asserted by the relevant
United States Governmental Authority. A certificate setting forth and
containing an explanation in reasonable detail of the manner in which such
amount shall have been determined and the amount of such payment or
liability prepared by a Lender or the Agent on their behalf, absent
manifest error, shall be final, conclusive and binding for all purposes.
Such indemnification shall be made within 30 days after the date the Lender
(or Transferee) or the Agent, as the case may be, makes written demand
therefor.

         (d) If any Lender (or Transferee) or the Agent shall become aware that
it is entitled to claim a refund from a United States Governmental
Authority in respect of Taxes or Other Taxes as to which it has been
indemnified by the Borrower, or with respect to which the Borrower has paid
additional amounts, pursuant to this Section 2.15, it shall promptly notify
the Borrower of the availability of such refund claim and shall, within 30
days after receipt of a request by the Borrower, make a claim to such
United States Governmental Authority for such refund at the Borrower's
expense. If any Lender (or Transferee) or the Agent receives a refund
(including pursuant to a claim for refund made pursuant to the preceding
sentence) in respect of any Taxes or Other Taxes as to which it has been
indemnified by the Borrower or with respect to which the Borrower had paid
additional amounts pursuant to this Section 2.15, it shall within 30 days
<PAGE>
                                                                            25


from the date of such receipt, pay over such refund to the Borrower (but
only to the extent of indemnity payments made, or additional amounts paid,
by the Borrower under this Section 2.15 with respect to the Taxes or Other
Taxes giving rise to such refund), net of all out-of-pocket expenses of
such Lender (or Transferee) or the Agent and without interest (other than
interest paid by the relevant United States Governmental Authority with
respect to such refund); provided, however, that the Borrower, upon the
request of such Lender (or Transferee) or the Agent, agrees to repay the
amount paid over to the Borrower (plus penalties, interest or other
charges) to such Lender (or Transferee) or the Agent in the event such
Lender (or Transferee) or the Agent is required to repay such refund to
such United States Governmental Authority.

         (e) As soon as practicable, but in any event within 30 days, after the
date of any payment of Taxes or Other Taxes by the Borrower to the relevant
United States Governmental Authority, the Borrower will deliver to the
Agent, at its address referred to in Section 8.01, the original or a
certified copy of a receipt issued by such United States Governmental
Authority evidencing payment thereof.

         (f) Without prejudice to the survival of any other agreement contained
herein, the agreements and obligations contained in this Section 2.15 shall
survive the payment in full of the principal of and interest on all
outstanding Loans hereunder.

         (g) Each of the Agent and each Lender (or Transferee) that is
organized under the laws of a jurisdiction other than the United States,
any State thereof or the District of Columbia (a "Non-U.S. Lender" or "Non
U.S. Agent", as applicable) shall deliver to the Borrower and the Agent two
copies of either United States Internal Revenue Service Form W-8BEN or Form
W-8ECI, properly completed and duly executed by such Non-U.S. Lender
claiming complete exemption from, or reduced rate of, United States Federal
withholding tax on payments by the Borrower under this Agreement. Such
forms shall be delivered by each Non-U.S. Lender on or before the date it
becomes a party to this Agreement (or, in the case of a Transferee that is
a participation holder, on or before the date such participation holder
becomes a Transferee hereunder) and on or before the date, if any, such
Non-U.S. Lender changes its applicable lending office by designating a
different lending office (a "New Lending Office"). In addition, each
Non-U.S. Lender shall deliver such forms promptly upon the obsolescence or
invalidity of any form previously delivered by such Non-U.S. Lender.
Notwithstanding any other provision of this Section 2.15(g), a Non-U.S.
Lender shall not be required to deliver any form pursuant to this Section
2.15(g) that such Non-U.S. Lender is not legally able to deliver.

         (h) The Borrower shall not be required to indemnify any Non-U.S.
Lender or Non-U.S. Agent (including any Transferee), or to pay any
additional amounts to any Non-U.S. Lender or Non-U.S. Agent (including any
Transferee), in respect of United States Federal, state or local
withholding tax pursuant to paragraph (a) or (c) above to the extent that
(i) the obligation to withhold amounts with respect to United States
Federal, state or local withholding tax existed on the date such Non-U.S.
Lender became a party to this Agreement (or, in the case of a Transferee
that is a participation holder, on the date such participation holder
became a Transferee hereunder) or, with respect to payments to a New
Lending Office, the date such Non-U.S. Lender designated such New Lending
<PAGE>
                                                                             26

Office with respect to a Loan; provided, however, that this clause (i)
shall not apply to any Transferee or New Lending Office that becomes a
Transferee or New Lending Office as a result of an assignment,
participation, transfer or designation made at the request of the Borrower;
and provided further, however, that this clause (i) shall not apply to the
extent the indemnity payment or additional amounts any Transferee or any
Lender (or Transferee) through a New Lending Office, would be entitled to
receive (without regard to this clause (i)) do not exceed the indemnity
payment or additional amounts that the person making the assignment,
participation or transfer to such Transferee or Lender (or Transferee)
making the designation of such New Lending Office, would have been entitled
to receive in the absence of such assignment, participation, transfer or
designation or (ii) the obligation to pay such additional amounts or such
indemnity payments would not have arisen but for a failure by such Non-U.S.
Lender (including any Transferee) to comply with the provisions of
paragraph (g) above and (i) below.

         (i) Any Lender (or Transferee) claiming any indemnity payment or
additional amounts payable pursuant to this Section 2.15 shall use
reasonable efforts (consistent with legal and regulatory restrictions) to
file any certificate or document reasonably requested in writing by the
Borrower or to change the jurisdiction of its applicable lending office if
the making of such a filing or change would avoid the need for or reduce
the amount of any such indemnity payment or additional amounts that may
thereafter accrue and would not, in the good faith determination of such
Lender (or Transferee) be otherwise disadvantageous to such Lender (or
Transferee).

         (j) Nothing contained in this Section 2.15 shall require any Lender
(or Transferee) or the Agent to make available to the Borrower any of its
tax returns (or any other information) that it deems to be confidential or
proprietary.

         SECTION 2.16. Assignment of Commitments Under Certain Circumstances.

         In the event that any Lender shall have delivered a notice or
certificate pursuant to Section 2.10 or 2.11, or the Borrower shall be required
to make additional payments to any Lender under Section 2.15, the Borrower shall
have the right, at its own expense, upon notice to such Lender and the Agent, to
require such Lender to transfer and assign without recourse (in accordance with
and subject to the restrictions contained in Section 8.04) all such Lender's
interests, rights and obligations contained hereunder to another financial
institution approved by the Agent and the Borrower (which approval shall not be
unreasonably withheld) which shall assume such obligations; provided that (i) no
such assignment shall conflict with any law, rule or regulation or order of any
Governmental Authority and (ii) the assignee shall pay to the affected Lender in
immediately available funds on the date of such assignment the principal of and
interest accrued to the date of payment on the Loans made by it hereunder and
all other amounts accrued for its account or owed to it hereunder and the
Borrower shall pay the processing and recordation fee due pursuant to Section
8.04.

                                  ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

         The Borrower represents and warrants to each Lender as follows:
<PAGE>
                                                                            27

         SECTION 3.01. Organization; Powers.

         The Borrower (i) is a limited liability company, duly formed, validly
existing and in good standing under the laws of the jurisdiction of its
formation, (ii) has all requisite power and authority to own its property and
assets and to carry on its business as now conducted and as proposed to be
conducted, (iii) is qualified to do business in every jurisdiction where such
qualification is required, except where the failure so to qualify would not
result in a Material Adverse Change, and (iv) has the limited liability company
power and authority to execute, deliver and perform its obligations under this
Agreement and to request and receive Borrowings hereunder.

         SECTION 3.02. Authorization.

         The execution, delivery and performance by the Borrower of this
Agreement and the making of the Loans hereunder (i) have been duly authorized by
all requisite limited liability company action and (ii) will not (A) violate (x)
any provision of any law, statute, rule or regulation (including, without
limitation, the Margin Regulations) or of the certificate of incorporation or
other constitutive documents (including the limited liability company agreement)
or by-laws of the Borrower or any of its Subsidiaries to which the Borrower is
subject, (y) any order of any Governmental Authority or (z) any provision of any
indenture, agreement or other instrument to which the Borrower or any of its
Subsidiaries is a party or by which it or any of its property is or may be
bound, (B) be in conflict with, result in a breach of or constitute (alone or
with notice or lapse of time or both) a default under any such indenture,
agreement or other instrument or (C) result in the creation or imposition of any
Lien upon any property or assets of the Borrower.

         SECTION 3.03. Enforceability.

         This Agreement constitutes a legal, valid and binding obligation of the
Borrower enforceable in accordance with its terms except to the extent that
enforcement may be limited by bankruptcy, insolvency or similar laws affecting
the enforcement of creditors' rights generally.

         SECTION 3.04. Governmental Approvals.

         No action, consent or approval of, registration or filing with or other
action by any Governmental Authority is or will be required in connection with
the execution, delivery and performance by the Borrower of this Agreement,
except those as have been duly obtained and as are (i) in full force and effect,
(ii) sufficient for their purpose and (iii) not subject to any pending or, to
the knowledge of the Borrower, threatened appeal or other proceeding seeking
reconsideration or review thereof.

         SECTION 3.05. Financial Statements.

         (a) The consolidated balance sheet of the Borrower and its Consolidated
Subsidiaries as of December 31, 2003 and the related consolidated statements of
income, retained earnings and cash flows for the fiscal year then ended,
reported on by Deloitte & Touche LLP and set forth in Borrower's Annual Report
on Form 10-K, a copy of which has been delivered to each of the Lenders, present
fairly, in all material respects, the consolidated financial position of the
Borrower and its Consolidated Subsidiaries as of such date and their
consolidated results of operations and cash flows for the period ending on such
date in conformity with GAAP.
<PAGE>
                                                                             28

         (b) Except as set forth in the financial statements or other reports of
the type referred to in Section 5.03 hereof and that have been delivered to the
Lenders on or prior to the date hereof, since December 31, 2003, other than as
a result of the matters excluded from the computation of Consolidated Earnings
Available for Fixed Charges as set forth in the definition thereof, there has
been no Material Adverse Change with respect to the Borrower.

         SECTION 3.06. Litigation.

         Except as set forth in the financial statements or other reports of the
type referred to in Section 5.03 hereof and that have been delivered to the
Lenders on or prior to the date hereof, there is no action, suit or arbitral or
governmental proceeding pending against, or to the knowledge of the Borrower
threatened against or affecting, the Borrower or any of its Subsidiaries before
any court or arbitrator or any governmental body, agency or official in which
there is a reasonable possibility of an adverse decision that could result in a
Material Adverse Change.

         SECTION 3.07. Federal Reserve Regulations.

         (a) Neither the Borrower nor any of its Subsidiaries is engaged
principally, or as one of its important activities, in the business of
extending credit for the purpose of purchasing or carrying Margin Stock.

         (b) No part of the proceeds of any Loan will be used by the Borrower,
whether directly or indirectly, and whether immediately, incidentally or
ultimately, to purchase or carry Margin Stock or to refund indebtedness
originally incurred for such purpose, or for any other purpose which entails a
violation of, or which is inconsistent with, the provisions of the Margin
Regulations.

         (c) Not more than 25% of the value of the assets of the Borrower
subject to the restrictions of Sections 5.10 and 5.11 is represented by Margin
Stock.

         SECTION 3.08. Investment Company Act; Public Utility Holding Company
                       Act.

         (a) Neither the Borrower nor any of its Subsidiaries is an "investment
company" as defined in, or subject to regulation under, the Investment Company
Act of 1940.

         (b) The Borrower and each of its Subsidiaries is exempt from all
provisions of the Public Utility Holding Company Act of 1935 and rules and
regulations thereunder, except for Sections 9(a)(2) and 33 of such Act and the
rules and regulations thereunder, and the execution, delivery and performance
by the Borrower of this Agreement and its obligations hereunder do not violate
any provision of such Act or any rule or regulation thereunder.
<PAGE>
                                                                             29

        SECTION 3.09. No Material Misstatements.

         No report, financial statement or other written information furnished
by or on behalf of the Borrower to the Agent or any Lender pursuant to or in
connection with this Agreement contains or will contain any material
misstatement of fact or omits or will omit to state any material fact necessary
to make the statements therein, in the light of the circumstances under which
they were or will be made, not misleading.

         SECTION 3.10. Taxes.

         The Borrower and its Subsidiaries have filed or caused to be filed
within 3 days of the date on which due, all material Federal, state and local
tax returns that to their knowledge are required to be filed by them, and have
paid or caused to be paid all material taxes shown to be due and payable on such
returns or on any assessments received by them, other than any taxes or
assessments the validity of which is being contested in good faith by
appropriate proceedings and with respect to which appropriate accounting
reserves have, to the extent required by GAAP, been set aside.

         SECTION 3.11. Employee Benefit Plans.

         With respect to each Plan, the Borrower and its ERISA Affiliates are in
compliance in all material respects with the applicable provisions of ERISA and
the Code and the final regulations and published interpretations thereunder. No
ERISA Event has occurred that alone or together with any other ERISA Event has
resulted or could reasonably be expected to result in a Material Adverse Change.
Neither the Borrower nor any ERISA Affiliate has incurred any Withdrawal
Liability that could result in a Material Adverse Change. Neither the Borrower
nor any ERISA Affiliate has received any notification that any Multiemployer
Plan is in reorganization or has been terminated within the meaning of Title IV
of ERISA, which such reorganization or termination could result in a Material
Adverse Change, and no Multiemployer Plan is reasonably expected to be in
reorganization or to be terminated where such reorganization or termination has
resulted or can reasonably be expected to result, through an increase in the
contributions required to be made to such Plan or otherwise, in a Material
Adverse Change.

         SECTION 3.12. Significant Subsidiaries.

         Each of the Borrower's Significant Subsidiaries is a corporation,
limited liability company or other type of person duly incorporated or formed
(as the case may be), validly existing and in good standing under the laws of
its jurisdiction of incorporation or formation (as the case may be) and has all
corporate, limited liability company, partnership or other (as the case may be)
powers necessary to carry on its business substantially as now conducted. Each
of the Borrower's Significant Subsidiaries has all material governmental
licenses, authorizations, consents and approvals required to carry on its
business substantially as now conducted.

         SECTION 3.13. Environmental Matters.

         Except as set forth in or contemplated by the financial statements or
other reports of the type referred to in Section 5.03 hereof and that have been
delivered to the Lenders on or prior to the date hereof, the Borrower and each
<PAGE>
                                                                             30


of its Subsidiaries has complied in all material respects with all Federal,
state, local and other statutes, ordinances, orders, judgments, rulings and
regulations relating to environmental pollution or to environmental or nuclear
regulation or control, except to the extent that failure to so comply could not
reasonably be expected to result in a Material Adverse Change. Except as set
forth in or contemplated by such financial statements or other reports, neither
the Borrower nor any of its Subsidiaries has received notice of any material
failure so to comply, except where such failure could not reasonably be expected
to result in a Material Adverse Change. Except as set forth in or contemplated
by such financial statements or other reports, the facilities of the Borrower or
any of its Subsidiaries, as the case may be, are not used to manage any
hazardous wastes, hazardous substances, hazardous materials, toxic substances,
toxic pollutants or substances similarly denominated, as those terms or similar
terms are used in the Resource Conservation and Recovery Act, the Comprehensive
Environmental Response Compensation and Liability Act, the Hazardous Materials
Transportation Act, the Toxic Substance Control Act, the Clean Air Act, the
Clean Water Act or any other applicable law relating to environmental pollution,
or any nuclear fuel or other radioactive materials, in violation in any material
respect of any law or any regulations promulgated pursuant thereto, except to
the extent that such violations could not reasonably be expected to result in a
Material Adverse Change. Except as set forth in or contemplated by such
financial statements or other reports, the Borrower is aware of no events,
conditions or circumstances involving environmental pollution or contamination
that could reasonably be expected to result in a Material Adverse Change.

         SECTION 3.14. Solvency.

         The Borrower is Solvent.

                                   ARTICLE IV
                                   CONDITIONS

         The obligations of the Lenders to make Loans hereunder are subject to
the satisfaction of the following conditions:

         SECTION 4.01. Initial Loans.

         The Commitment of each Lender to make its initial Loan on or after the
date hereof is subject to the conditions that on or prior to the date of such
Loan:

         (a) The Agent shall have received favorable written legal opinions of
(i) (A) Thelen Reid & Priest LLP, special New York counsel to the Borrower,
(B) Hunton & Williams LLP, counsel to the Borrower, and (ii) King &
Spalding LLP, special New York counsel to the Agent, in each case dated the
date hereof, addressed to the Agent and the Lenders and in form and substance
satisfactory to the Agent.

         (b) The Agent shall have received (i) a copy of the certificate of
formation, including all amendments thereto, of the Borrower, certified as
of a recent date by the Secretary of State of the state of formation of the
Borrower, and a certificate as to the good standing of the Borrower as of a
recent date from such Secretary of State; (ii) a certificate of the
Secretary or an Assistant Secretary or analogous officer of the Borrower,
dated the date of this Agreement and certifying (A) that attached thereto
<PAGE>
                                                                             31


is a true and complete copy of the limited liability company agreement of
the Borrower as in effect on such date and at all times since a date prior
to the date of the resolutions described in clause (B) below, (B) that
attached thereto are true and complete copies of resolutions duly adopted
by the board of directors or managers (or any duly authorized committee
thereof) of the Borrower authorizing the execution and delivery by the
Borrower of this Agreement, the Loans to be made hereunder and the
performance by the Borrower of all of its obligations hereunder, and that
such resolutions have not been modified, rescinded or amended and are in
full force and effect, (C) that the certificate of formation referred to in
clause (i) above has not been amended since the date of the last amendment
thereto shown on the certificate of good standing furnished pursuant to
such clause (i) and (D) as to the incumbency and specimen signature of each
officer executing this Agreement and any other document delivered in
connection herewith on behalf of the Borrower; (iii) a certificate of
another officer of the Borrower as to the incumbency and specimen signature
of the Secretary or Assistant Secretary or analogous officer executing the
certificate pursuant to (ii) above; and (iv) a certificate of a Responsible
Officer of the Borrower, dated the date of this Agreement, stating that (A)
no action, consent or approval of, registration or filing with or other
action by any Governmental Authority is or will be required in connection
with the execution, delivery and performance by the Borrower of this
Agreement, except those as have been duly obtained and as are (1) in full
force and effect, (2) sufficient for their purpose and (3) not subject to
any pending or, to the knowledge of such person, threatened appeal or other
proceeding seeking reconsideration or review thereof, and (B) the
representations and warranties set forth in Article III hereof are true and
correct in all material respects on and as of the date hereof, and (C) no
Event of Default or Default has occurred and is continuing on the date
hereof.

         (c) The Agent shall have received documentation and information
required by regulatory authorities under applicable "know your customer"
and anti-money laundering rules and regulations, including without
limitation the USA Patriot Act.

         (d) The Agent shall have received evidence satisfactory to it of the
execution and delivery of the TXU Corp. Agreement and the TXU Gas
Agreement.

         (e) The Agent shall have received such other approvals, opinions,
certificates, instruments and documents as the Agent, or any of the Lenders
may have reasonably requested, in form satisfactory to the Agent and the
requesting Lender.

         (f) The Lenders, the Agent and the Sole Lead Arranger named in the
Letter Agreements shall have received payment of all fees and
reimbursements of all expenses for which invoices have been presented as
and when due on or prior to the date of the initial Loan pursuant to the
terms of this Agreement or the Letter Agreements.

         SECTION 4.02. Conditions for All Loans.

         The Commitment of each Lender to make each Loan hereunder shall be
subject to the satisfaction of the following conditions precedent on the date of
such Loan:

         (a) The Agent shall have received from the Borrower a notice
requesting such Loan as required by Section 2.03.
<PAGE>
                                                                             32


         (b) The representations and warranties of the Borrower set forth in
Article III hereof (except, in the case of any Loan that does not increase
the aggregate principal amount of the Loans outstanding to the Borrower,
the representations set forth in Sections 3.05(b), 3.06, 3.11 and 3.13)
shall be true and correct in all material respects on and as of the date of
such Loan with the same effect as though made on and as of such date,
except to the extent such representations and warranties expressly relate
to an earlier date.

         (c) At the time of and immediately after such Loan, no Default or
Event of Default affecting the Borrower shall have occurred and be
continuing at the time of such Loan or would result from the making of such
Loan.

         (d) The Agent shall have received a certificate of a Responsible
Officer of the Borrower certifying that the matters set forth in paragraphs
(b) and (c) of this Section 4.02 are true and correct as of such date.

Each Loan shall be deemed to constitute a representation and warranty by the
Borrower on the date of such Loan as to the matters specified in paragraphs (b)
and (c) of this Section 4.02.

                                   ARTICLE V
                                    COVENANTS

         The Borrower agrees that, so long as any Lender has any Commitment
hereunder or any amount payable hereunder remains unpaid:

         SECTION 5.01. Existence.

         It will, and will cause each of its Significant Subsidiaries to, do or
cause to be done all things necessary to preserve and keep in full force and
effect its existence and all rights, licenses, permits, franchises and
authorizations necessary or desirable in the normal conduct of its business
except as otherwise permitted pursuant to Section 5.10.

         SECTION 5.02. Compliance With Laws; Business and Properties.

         It will, and will cause each of its Subsidiaries to, comply with all
applicable material laws, rules, regulations and orders of any Governmental
Authority, whether now in effect or hereafter enacted, except where the validity
or applicability of such laws, rules, regulations or orders is being contested
by appropriate proceedings in good faith; and at all times maintain and preserve
all property material to the conduct of its business and keep such property in
good repair, working order and condition and from time to time make, or cause to
be made, all needful and proper repairs, renewals, additions, improvements and
replacements thereto necessary in order that the business carried on in
connection therewith may be properly conducted at all times.

         SECTION 5.03. Financial Statements, Reports, Etc.

         It will furnish to the Agent for each Lender:

         (a) as soon as available and in any event within 120 days after the
end of each fiscal year of the Borrower, a consolidated balance sheet of
the Borrower and its Consolidated Subsidiaries as of the end of such fiscal
<PAGE>
                                                                             33


year and the related consolidated statements of income, retained earnings
and cash flows for such fiscal year, setting forth in each case in
comparative form the figures for the previous fiscal year, all reported on
in a manner reasonably acceptable to the SEC by Deloitte & Touche LLP or
other independent public accountants of nationally recognized standing;

         (b) as soon as available and in any event within 75 days after the end
of each of the first three quarters of each fiscal year of the Borrower, a
consolidated balance sheet of the Borrower and its Consolidated
Subsidiaries as of the end of such quarter and the related consolidated
statements of income for such quarter, for the portion of the Borrower's
fiscal year ended at the end of such quarter, and for the twelve months
ended at the end of such quarter, and the related consolidated statement of
cash flows for the portion of the Borrower's fiscal year ended at the end
of such quarter, setting forth comparative figures for previous dates and
periods to the extent required in Form 10-Q, all certified (subject to
normal year-end adjustments) as to fairness of presentation, GAAP and
consistency by a Financial Officer of the Borrower;

         (c) simultaneously with any delivery of each set of financial
statements referred to in paragraphs (a) and (b) above, a certificate of a
Financial Officer of the Borrower (i) setting forth in reasonable detail
the calculations required to establish whether the Borrower was in
compliance with the requirements of Sections 5.12 and 5.13 on the date of
such financial statements, and (ii) stating whether any Default or Event of
Default exists on the date of such certificate and, if any Default or Event
of Default then exists, setting forth the details thereof and the action
that the Borrower is taking or proposes to take with respect thereto;

         (d) simultaneously with the delivery of each set of financial
statements referred to in paragraph (a) above, a statement of the firm of
independent public accountants that reported on such statements (i) stating
whether anything has come to their attention to cause them to believe that
any Default or Event of Default existed on the date of such statements and
(ii) confirming the calculations set forth in the Financial Officer's
certificate delivered simultaneously therewith pursuant to paragraph (c)
above;

         (e) forthwith upon becoming aware of the occurrence of any Default or
Event of Default, a certificate of a Financial Officer of the Borrower
setting forth the details thereof and the action that the Borrower is
taking or proposes to take with respect thereto;

         (f) promptly upon the filing thereof, copies of each final prospectus
(other than a prospectus included in any registration statement on Form S-8
or its equivalent or with respect to a dividend reinvestment plan) and all
reports on Forms 10-K, 10-Q and 8-K and similar reports that the Borrower
shall have filed with the SEC, or any Governmental Authority succeeding to
any of or all the functions of the SEC;

         (g) if and when any member of the Controlled Group (i) gives or is
required to give notice to the PBGC of any Reportable Event with respect to
any Plan that might constitute grounds for a termination of such Plan under
Title IV of ERISA, or knows that the plan administrator of any Plan has
given or is required to give notice of any such Reportable Event, a copy of
the notice of such Reportable Event given or required to be given to the
PBGC; (ii) receives notice from a proper representative of a Multiemployer
Plan of complete or partial Withdrawal Liability being imposed upon such
member of the Controlled Group under Title IV of ERISA, a copy of such
notice; or (iii) receives notice from the PBGC under Title IV of ERISA of
an intent to terminate, or appoint a trustee to administer, any Plan, a
copy of such notice; and
<PAGE>
                                                                             34


         (h) promptly, from time to time, such additional information regarding
the financial position or business of the Borrower and its Subsidiaries as
the Agent, at the request of any Lender, may reasonably request.

As promptly as practicable after delivering each set of financial statements as
required in paragraph (a) of this Section, the Borrower shall make available a
copy of the consolidating workpapers used by the Borrower in preparing such
consolidated statements to and each Lender that shall have requested such
consolidating workpapers. Each Lender that receives such consolidating
workpapers shall hold them in confidence as required by Section 8.15; provided
that no Lender may disclose such consolidating workpapers to any other person
pursuant to clause (iv) of Section 8.15.

         SECTION 5.04. Insurance.

         It will, and will cause each of its Subsidiaries to, maintain such
insurance or self insurance, to such extent and against such risks, including
fire and other risks insured against by extended coverage, as is customary with
companies similarly situated and in the same or similar businesses.

         SECTION 5.05. Taxes, Etc.

         It will, and will cause each of its Subsidiaries to, pay and discharge
promptly when due all material taxes, assessments and governmental charges
imposed upon it or upon its income or profits or in respect of its property, as
well as all other material liabilities, in each case before the same shall
become delinquent or in default and before penalties accrue thereon, unless and
to the extent that the same are being contested in good faith by appropriate
proceedings and adequate reserves with respect thereto shall, to the extent
required by GAAP, have been set aside.

         SECTION 5.06. Maintaining Records; Access to Properties and
                       Inspections.

         It will, and will cause each of its Subsidiaries to, maintain financial
records in accordance with GAAP and, upon reasonable notice and at reasonable
times, permit authorized representatives designated by any Lender to visit and
inspect its properties and to discuss its affairs, finances and condition with
its officers.

         SECTION 5.07. ERISA.

         It will, and will cause each of its Subsidiaries that are members of
the Controlled Group to, comply in all material respects with the applicable
provisions of ERISA and the Code except where any noncompliance, individually or
in the aggregate, would not result in a Material Adverse Change.
<PAGE>
                                                                             35


         SECTION 5.08. Maintain Ratings.

         It will maintain ratings (whether explicit or implied) assigned by
Standard & Poor's Ratings Services (a division of The McGraw-Hill Companies,
Inc.) and Moody's Investors Service, Inc. for the senior unsecured non-credit
enhanced long term debt of the Borrower. For the avoidance of doubt, it being
understood that no minimum credit rating is required to be achieved or
maintained by the Borrower.

         SECTION 5.09. Use of Proceeds.

         It will not use the proceeds of the Loans for purposes other than to
(i) to fund directly or indirectly a portion of the Preferred Membership
Interest Repurchase or other Securities Repurchase, (ii) to fund a loan to the
TXU system money pool to be used by the Affiliates of the Borrower, (iii) to pay
all or a portion of the Transaction Costs, and (iv) for other general corporate
purposes.

         SECTION 5.10. Consolidations, Mergers, Sales and Acquisitions of Assets
and Investments in Subsidiaries.

         It (i) will not, and will not permit any of its Significant
Subsidiaries to, consolidate or merge with or into any person unless, (A) in the
case of any such transaction involving the Borrower, the surviving person is the
Borrower or another person formed under the laws of a State of the United States
of America and assumes or is responsible, by operation of law, for all the
obligations of the Borrower hereunder and (B) in the case of any such
transaction involving any such Significant Subsidiary, the survivor is the
Borrower, such Significant Subsidiary or a Wholly Owned Subsidiary of the
Borrower (or a person which as a result of such transaction becomes a Wholly
Owned Subsidiary of the Borrower), and (ii) will not, and will not permit any of
its Significant Subsidiaries to, make a Significant Disposition to any person
other than the Borrower or a Wholly Owned Subsidiary of the Borrower (or a
person which as a result of such transaction becomes a Wholly Owned Subsidiary
of the Borrower), provided that the Borrower will not in any event permit any
such consolidation, merger, sale, lease or transfer if any Default or Event of
Default relating to the Borrower shall have occurred and be continuing at the
time of or after giving effect to such transaction. Notwithstanding the
foregoing, (x) neither the Borrower nor any of its Subsidiaries will engage to a
Substantial extent in businesses other than those currently conducted by them
and other businesses reasonably related thereto, (y) neither the Borrower nor
any of its Subsidiaries will acquire any Subsidiary or make any investment in
any Subsidiary if, upon giving effect to such acquisition or investment, as the
case may be, the Borrower would not be in compliance with the covenants set
forth in Sections 5.12 and 5.13 and (z) nothing in this Section shall prohibit
any sales of assets permitted by Section 5.11(d).

         SECTION 5.11. Limitations on Liens.

         Neither it nor any Significant Subsidiary thereof will create or assume
or permit to exist any Lien in respect of any property or assets of any kind
(real or personal, tangible or intangible) of the Borrower or any such
Significant Subsidiary, or sell any such property or assets subject to an
understanding or agreement, contingent or otherwise, to repurchase such property
or assets, or sell, or permit any Significant Subsidiary thereof to sell, any
accounts receivable; provided that the provisions of this Section shall not
prevent or restrict the creation, assumption or existence of:
<PAGE>
                                                                             36


         (a) any Lien in respect of any such property or assets of any
Significant Subsidiary of the Borrower to secure indebtedness owing by it to
the Borrower or any Wholly Owned Subsidiary of the Borrower; or

         (b) Liens (including capital leases) in respect of property
acquired by the Borrower or any Significant Subsidiary thereof, to secure the
purchase price, or the cost of construction and development, of such property
(or to secure indebtedness incurred prior to, at the time of, or within 120
days after the later of the acquisition of such property and the commencement
of operation of such property for the purpose of financing the acquisition, or
the cost of construction and development, of such property), or Liens existing
on any such property at the time of acquisition of such property by the Borrower
or such Significant Subsidiary, whether or not assumed, or any Lien in respect
of property of any person existing at the time such person becomes a Subsidiary
of the Borrower; or agreements to acquire any property or assets under
conditional sale agreements or other title retention agreements, or capital
leases in respect of any other property; provided that

                     (A) the aggregate principal amount of Indebtedness secured
             by all Liens in respect of any such property shall not exceed the
             cost (as determined by the board of directors or analogous
             governing body of the Borrower or such Significant Subsidiary,
             as the case may be) of such property at the time of
             acquisition thereof (or (x) in the case of property covered by
             a capital lease, the fair market value, as so determined, of
             such property at the time of such transaction, or (y) in the
             case of a Lien in respect of property existing at the time
             such person becomes a Subsidiary of the Borrower the fair
             market value, as so determined of such property at such time),
             and

                     (B) at the time of the acquisition of the property by the
             Borrower or such Significant Subsidiary, or at the time such person
             becomes a Subsidiary of the Borrower, as the case may be,
             every such Lien shall apply and attach only to the property
             originally subject thereto and fixed improvements constructed
             thereon; or

         (c) refundings or extensions of any Lien permitted in the
foregoing paragraph (b) for amounts not exceeding the principal amount of the
Indebtedness so refunded or extended or the fair market value (as determined by
the board of directors (or analogous governing body) of the Borrower or such
Significant Subsidiary, as the case may be) of the property theretofore subject
to such Lien, whichever shall be lower, in each case at the time of such
refunding or extension; provided that such Lien shall apply only to the same
property theretofore subject to the same and fixed improvements constructed
thereon; or

         (d) sales subject to understandings or agreements to repurchase;
provided that the aggregate sales price for all such sales (other than sales to
any governmental instrumentality in connection with such instrumentality's
issuance of indebtedness, including without limitation industrial development
bonds and pollution control bonds, on behalf of the Borrower or any Significant
Subsidiary thereof) made in any one calendar year shall not exceed $50,000,000
in the aggregate for the Borrower and their respective Significant Subsidiaries;
or
<PAGE>
                                                                            37

         (e) any production payment or similar interest which is
dischargeable solely out of natural gas, coal, lignite, oil or other mineral to
be produced from the property subject thereto and to be sold or delivered by the
Borrower or any Significant Subsidiary thereof; or

         (f) any Lien, including in connection with sale-leaseback
transactions, created or assumed by the Borrower or any Significant Subsidiary
thereof on natural gas, coal, lignite, oil or other mineral properties or
nuclear fuel owned or leased by the Borrower or such Subsidiary, to secure
loans to the Borrower or such Subsidiary in an aggregate amount not to
exceed $400,000,000 in the aggregate for the Borrower and their respective
Significant Subsidiaries; provided that neither the Borrower nor any Subsidiary
of the Borrower shall assume or guarantee such financings; or

         (g) any Lien (whenever incurred) on assets owned by the Borrower or
any Subsidiary thereof as of the date hereof and any fuel, operating and
maintenance or similar contract related thereto securing Indebtedness of
the Borrower or Subsidiary in an aggregate amount not to exceed 10% of
consolidated assets of the Borrower; or

         (h) leases (other than capital leases) now or hereafter existing and
any renewals and extensions thereof under which the Borrower or any
Significant Subsidiary thereof may acquire or dispose of any of its
property, subject, however, to the terms of Section 5.10; or

         (i) any Lien on the rights of TXU Mining or TXU Fuel existing under
their respective Operating Agreements; or

         (j) pledges or sales by the Borrower or any Subsidiary of the
Borrower of its accounts receivable including customers' installment paper; or

         (k) the pledge of current assets, in the ordinary course of
business, to secure current liabilities; or

         (l) Permitted Encumbrances; or

         (m) Liens on cash and cash equivalents created to secure
reimbursement obligations for letters of credit issued for the account of the
Borrower or any of its Subsidiaries.

         SECTION 5.12.  Fixed Charge Coverage Ratio.

         It will not, as of the end of each quarter of each fiscal year of the
Borrower, permit the ratio of (x) its Consolidated Earnings Available for Fixed
Charges for the twelve months then ended to (y) its Consolidated Fixed Charges
for the twelve months then ended to be less than 2.00 to 1.00.
<PAGE>
                                                                            38

         SECTION 5.13.  Debt to Total Capitalization Ratio.

         It will not, as of the end of each quarter of each fiscal year of the
Borrower, permit the ratio of its Consolidated Senior Debt to its Consolidated
Total Capitalization to be greater than 0.60 to 1.00.

         SECTION 5.14.  Restrictive Agreements.

         It will not cause or permit TXU Generation Holdings Company LLC, TXU
Portfolio Management Company LP, TXU Energy Retail Company LP, or any of their
respective Significant Subsidiaries (the "Subject Subsidiaries") to enter into
any agreement restricting the ability of any Subject Subsidiary to make
payments, directly or indirectly, to the Borrower by way of dividends, advances,
repayments of loans or advances, reimbursements of management and other
intercompany charges, expenses and accruals or other returns on investments or
any other agreement or arrangement that restricts the ability of such Subject
Subsidiary to make any payment, directly or indirectly, to the Borrower other
than pursuant to the terms of preferred stock or Equity-Credit Preferred
Securities issued by such Subject Subsidiary, if the effect of such agreement is
to subject such Subject Subsidiary to restrictions on such payments greater than
those to which such Subject Subsidiary is subject on the date of this Agreement.
All such existing restrictive agreements are listed on Schedule 5.14 hereto.

                                    ARTICLE VI
                                EVENTS OF DEFAULT

         In case of the happening of any of the following events (each an "Event
of Default"):

         (a) any representation or warranty made or deemed made by the Borrower
in or in connection with the execution and delivery of this Agreement or
the Loans made hereunder shall prove to have been false or misleading in
any material respect when so made, deemed made or furnished;

         (b) default shall be made by the Borrower in the payment of any
principal of any outstanding Loans when and as the same shall become due and
payable, whether at the due date thereof or at a date fixed for prepayment
thereof or by acceleration thereof or otherwise;

         (c) default shall be made by the Borrower in the payment of any
interest on any outstanding Loans or any Fee or any other amount (other than an
amount referred to in paragraph (b) above) due hereunder, when and as the same
shall become due and payable, and such default shall continue unremedied for a
period of five days;

         (d) default shall be made by the Borrower in the due observance or
performance of any covenant, condition or agreement contained in Section 5.01,
5.12 or 5.13;

         (e) default shall be made by the Borrower (i) in the due observance or
performance of any covenant, condition or agreement contained in Section 5.10
and such default shall continue unremedied for a period of 5 days or (ii) in the
due observance or performance of any covenant, condition or agreement contained
herein (other than those specified in paragraphs (b), (c), (d) or (e)(i) above)
or in the Letter Agreements and such default shall continue unremedied for a
period of 30 days after notice thereof from the Agent at the request of any
Lender to the Borrower;
<PAGE>
                                                                             39

         (f) TXU shall no longer own, directly or indirectly, all the
outstanding common stock or common members' interest in the Borrower or any
permitted successor to the Borrower, or the Borrower shall no longer own,
directly or indirectly, 100% of the common stock, common members' interest or
partnership interests in TXU Generation Holdings Company LLC, TXU Portfolio
Management Company LP or TXU Energy Retail Company LP; provided, however, that
the Borrower may sell in an initial public offering up to 20% of the equity
interests in any Subsidiary comprising generating assets of the Borrower;

         (g) the Borrower or any Subsidiary thereof shall (i) fail to pay any
principal or interest, regardless of amount, due in respect of any Indebtedness
in a principal amount in excess of $50,000,000, when and as the same shall
become due and payable, subject to any applicable grace periods, or (ii) fail to
observe or perform any other term, covenant, condition or agreement contained in
any agreement or instrument evidencing or governing any such Indebtedness if the
effect of any failure referred to in this clause (ii) is to cause, or to permit
the holder or holders of such Indebtedness or a trustee on its or their behalf
to cause, such Indebtedness to become accelerated or due prior to its stated
maturity;

         (h) an involuntary proceeding shall be commenced or an involuntary
petition shall be filed in a court of competent jurisdiction seeking (i) relief
in respect of the Borrower or any Significant Subsidiary, or of a substantial
part of the property or assets of the Borrower or any Significant Subsidiary,
under Title 11 of the United States Bankruptcy Code, as now constituted or
hereafter amended, or any other Federal or state bankruptcy, insolvency,
receivership or similar law, (ii) the appointment of a receiver, trustee,
custodian, sequestrator, conservator or similar official for the Borrower or any
Significant Subsidiary or for a substantial part of the property or assets of
the Borrower or any Significant Subsidiary or (iii) the winding up or
liquidation of the Borrower or any Significant Subsidiary; and such proceeding
or petition shall continue undismissed for 60 days or an order or decree
approving or ordering any of the foregoing shall be entered;

         (i) the Borrower or any Significant Subsidiary shall (i) voluntarily
commence any proceeding or file any petition seeking relief under Title 11 of
the United States Bankruptcy Code, as now constituted or hereafter amended, or
any other Federal or state bankruptcy, insolvency, receivership or similar law,
(ii) consent to the institution of, or fail to contest in a timely and
appropriate manner, any proceeding or the filing of any petition described in
(h) above, (iii) apply for or consent to the appointment of a receiver, trustee,
custodian, sequestrator, conservator or similar official for the Borrower or any
Significant Subsidiary or for a substantial part of the property or assets of it
or such Significant Subsidiary, (iv) file an answer admitting the material
allegations of a petition filed against it in any such proceeding, (v) make a
general assignment for the benefit of creditors, (vi) become unable, admit in
writing its inability or fail generally to pay its debts as they become due or
(vii) take any action for the purpose of effecting any of the foregoing;

         (j) A Change in Control shall occur;
<PAGE>
                                                                            40

         (k) one or more judgments or orders for the payment of money in an
aggregate amount in excess of $50,000,000 shall be rendered against the Borrower
or any Subsidiary thereof or any combination thereof and such judgment or order
shall remain undischarged or unstayed for a period of 30 days, or any action
shall be legally taken by a judgment creditor to levy upon assets or properties
of the Borrower or any Subsidiary thereof to enforce any such judgment or order;

         (l) an ERISA Event or ERISA Events shall have occurred that reasonably
could be expected to result in a Material Adverse Change;

then, and in every such event, and at any time thereafter during the continuance
of such event, the Agent, at the request of the Required Lenders, shall, by
notice to the Borrower, take one or all of the following actions, at the same or
different times: (i) terminate forthwith the right of the Borrower to request
and receive Loans; and (ii) declare the Loans of the Borrower then outstanding
to be forthwith due and payable in whole or in part, whereupon the principal of
the Loans so declared to be due and payable, together with accrued interest
thereon and any unpaid accrued Fees and all other liabilities of the Borrower
accrued hereunder, shall become forthwith due and payable, without presentment,
demand, protest or any other notice of any kind, all of which are hereby
expressly waived, anything contained herein to the contrary notwithstanding;
provided that in the case of any event described in paragraph (h) or (i) above
affecting the Borrower, the right of the Borrower to request and receive Loans
shall automatically terminate and the principal of the Loans then outstanding of
the Borrower, together with accrued interest thereon and any unpaid accrued Fees
and all other liabilities of the Borrower accrued hereunder shall automatically
become due and payable, without presentment, demand, protest or any other notice
of any kind, all of which are hereby expressly waived by the Borrower, anything
contained herein to the contrary notwithstanding.

                                  ARTICLE VII
                                    THE AGENT

         (a) In order to expedite the transactions contemplated by this
Agreement, CSFB is hereby appointed to act as Agent on behalf of the
Lenders. Each Lender hereby irrevocably authorizes the Agent to take such
actions on behalf of such Lender and to exercise such powers as are
specifically delegated to the Agent by the terms and provisions hereof,
together with such actions and powers as are reasonably incidental thereto.
The Agent is hereby expressly authorized by the Lenders, without hereby
limiting any implied authority, (i) to receive on behalf of the Lenders and
all payments of principal of and interest on the outstanding Loans and all
other amounts due to the Lenders hereunder, and promptly to distribute to
each Lender, its proper share of each payment so received; (ii) to give
notice on behalf of each Lender to the Borrower of any Event of Default of
which the Agent has actual knowledge acquired in connection with its agency
hereunder; and (iii) to distribute to each Lender copies of all notices,
financial statements and other materials delivered by the Borrower pursuant
to this Agreement as received by the Agent.

         (b) Neither the Agent nor any of its directors, officers, employees or
agents shall be liable as such for any action taken or omitted by any of
them except for its or his or her own gross negligence or willful
misconduct, or be responsible for any statement, warranty or representation
<PAGE>
                                                                            41



herein or the contents of any document delivered in connection herewith, or
be required to ascertain or to make any inquiry concerning the performance
or observance by the Borrower of any of the terms, conditions, covenants or
agreements contained in this Agreement. The Agent shall not be responsible
to the Lenders for the due execution, genuineness, validity, enforceability
or effectiveness of this Agreement or other instruments or agreements. The
Agent may deem and treat the Lender that makes any Loan as the holder of
the indebtedness resulting therefrom for all purposes hereof until it shall
have received notice from such Lender, given as provided herein, of the
transfer thereof. The Agent shall in all cases be fully protected in
acting, or refraining from acting, in accordance with written instructions
signed by the Required Lenders and, except as otherwise specifically
provided herein, such instructions and any action or inaction pursuant
thereto shall be binding on all the Lenders. The Agent shall, in the
absence of knowledge to the contrary, be entitled to rely on any instrument
or document believed by it in good faith to be genuine and correct and to
have been signed or sent by the proper person or persons. Neither the Agent
nor any of its directors, officers, employees or agents shall have any
responsibility to the Borrower on account of the failure of or delay in
performance or breach by any Lender of any of its obligations hereunder or
to any Lender on account of the failure of or delay in performance or
breach by any other Lender or the Borrower of any of their respective
obligations hereunder or in connection herewith. The Agent may execute any
and all duties hereunder by or through agents or employees and shall be
entitled to rely upon the advice of legal counsel selected by it with
respect to all matters arising hereunder and shall not be liable for any
action taken or suffered in good faith by it in accordance with the advice
of such counsel.

         (c) The Lenders hereby acknowledge that the Agent shall not be under
any duty to take any discretionary action permitted to be taken by it
pursuant to the provisions of this Agreement unless it shall be requested
in writing to do so by the Required Lenders.

         (d) Subject to the appointment and acceptance of a successor Agent as
provided below, the Agent may resign at any time by notifying the Lenders
and the Borrower. Upon any such resignation, the Required Lenders shall
have the right to appoint a successor Agent acceptable to the Borrower. If
no successor shall have been so appointed by the Required Lenders and shall
have accepted such appointment within 30 days after the retiring Agent
gives notice of its resignation, then the retiring Agent may, on behalf of
the Lenders, appoint a successor Agent, having a combined capital and
surplus of at least $500,000,000 or an Affiliate of any such bank. Upon the
acceptance of any appointment as Agent hereunder by a successor bank, such
successor shall succeed to and become vested with all the rights, powers,
privileges and duties of the retiring Agent and the retiring Agent shall be
discharged from its duties and obligations hereunder. After the Agent's
resignation hereunder, the provisions of this Article and Section 8.05
shall continue in effect for its benefit in respect of any actions taken or
omitted to be taken by it while it was acting as the Agent.

         (e) The Lenders may remove the Agent upon 30 days' prior notice by so
notifying the Borrower and, in such event, the Lenders shall appoint a
successor Agent acceptable to the Borrower. Either the Required Lenders or
the Borrower may remove any Agent if (i) such Agent is adjudged bankrupt or
insolvent or (ii) a receiver or other public officer takes charge of such
Agent or its property. If no successor Agent shall have been appointed by
the Lenders and shall have accepted such appointment within 30 days after
delivery by the Lenders of the notice required by the first sentence of
this paragraph (b), the Required Lenders or the Borrower may petition any
court of competent jurisdiction for the appointment of a successor Agent.
After the Agent's removal hereunder, the provisions of this Article and
Section 8.05 shall continue in effect for its benefit in respect of any
actions taken or omitted to be taken by it while it was acting as Agent.
<PAGE>
                                                                             42


         (f) With respect to the Loans made by it hereunder, the Agent, in its
individual capacity and not as Agent, shall have the same rights and powers
as any other Lender and may exercise the same as though it were not the
Agent, and the Agent and its Affiliates may accept deposits from, lend
money to and generally engage in any kind of business with the Borrower or
any Subsidiary or other Affiliate thereof as if it were not Agent.

         (g) Each Lender agrees (i) to reimburse the Agent, on demand, in the
amount of its pro rata share (based on its Commitment hereunder or, if the
Commitments shall have been terminated, the amount of its percentage of
outstanding Loans) of any expenses incurred for the benefit of the Lenders,
in its role as Agent, including counsel fees and compensation of agents and
employees paid for services rendered on behalf of the Lenders, which shall
not have been reimbursed by the Borrower and (ii) to indemnify and hold
harmless the Agent and any of its directors, officers, employees or agents,
on demand, in the amount of such pro rata share, from and against any and
all liabilities, taxes, obligations, losses, damages, penalties, actions,
judgments, suits, costs, expenses or disbursements of any kind or nature
whatsoever which may be imposed on, incurred by or asserted against it in
any way relating to or arising out of this Agreement or any action taken or
omitted by it under this Agreement to the extent the same shall not have
been reimbursed by the Borrower; provided that no Lender shall be liable to
the Agent for any portion of such liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or
disbursements resulting from the gross negligence or willful misconduct of
the Agent or any of its directors, officers, employees or agents. Each
Lender agrees that any allocation made in good faith by the Agent of
expenses or other amounts referred to in this paragraph shall be conclusive
and binding for all purposes.

         (h) Each Lender acknowledges that it has, independently and without
reliance upon the Agent or any other Lender, and based on such documents
and information as it has deemed appropriate, made its own credit analysis
and decision to enter into this Agreement. Each Lender also acknowledges
that it will, independently and without reliance upon the Agent or any
other Lender, and based on such documents and information as it shall from
time to time deem appropriate, continue to make its own decisions in taking
or not taking action under or based upon this Agreement or any related
agreement or any document furnished hereunder or thereunder.

         (i) CSFB, by virtue of its designation as "Sole Lead Arranger and
Bookrunner" on the cover page of this Agreement shall have no duties,
liabilities, obligations or responsibilities under this Agreement other
than as the Agent and a Lender hereunder.
<PAGE>
                                                                            43


                                  ARTICLE VIII
                                  MISCELLANEOUS

         SECTION 8.01. Notices.

         (a)  Notices and other communications provided for herein shall be
in writing and shall be delivered by hand or overnight courier service, mailed
or sent by telecopy, as follows:

             (i)   if to the Borrower, c/o TXU Business Services Company, Energy
         Plaza, 1601 Bryan Street, 33rd Floor, Dallas, TX 75201, Attention:
         Treasurer (Telecopy No. 214-812-2488);

             (ii)  if to CSFB, as Agent, to Eleven Madison Avenue, New York,
          NY 10010-3629,  Attention:  Loan Services Manager (facsimile:
         (212) 325-8304);

             (iii) if to a Lender, to it at its address (or telecopy number) set
         forth in the Register or in the Assignment and Assumption pursuant to
         which such Lender became a party hereto; and

             (iv)  as to each party hereto, at such other address as shall be
         designated by such party in a written notice to each other party
         hereto.

         (b) Notices and other communications to the Lenders hereunder may be
delivered or furnished by electronic communication (including e-mail
and Internet or intranet websites) pursuant to procedures approved by
the Agent. The Agent or the Borrower may, in its discretion, agree to
accept notices and other communications to it hereunder by electronic
communications pursuant to procedures approved by it, provided that the
approval of such procedures may be limited to particular notices or
communications.

         (c) All notices and other communications given to any party hereto in
accordance with the provisions of this Agreement shall be deemed to
have been given on the date of receipt if delivered by hand or
overnight courier service or sent by telecopy or electronic mail to
such party as provided in this Section or in accordance with the latest
unrevoked direction from such party given in accordance with this
Section. Electronic forms of communication not otherwise described
herein require the consent of the Borrower and the Agent.

         SECTION 8.02. Survival of Agreement.

         All covenants, agreements, representations and warranties made by the
Borrower herein and in the certificates or other instruments prepared or
delivered in connection with or pursuant to this Agreement shall be considered
to have been relied upon by the Lenders and shall survive the making by the
Lenders of the Loans regardless of any investigation made by the Lenders or on
their behalf, and shall continue in full force and effect as long as there are
any outstanding Loans or any Fee or any other amount payable under this
Agreement is outstanding and unpaid or the Commitments have not been terminated.
<PAGE>
                                                                            44


         SECTION 8.03. Binding Effect.

         This Agreement shall become effective when it shall have been executed
by the Borrower and the Agent and when the Agent shall have received copies
hereof (telecopied or otherwise) which, when taken together, bear the signature
of each Lender, and thereafter shall be binding upon and inure to the benefit of
the parties hereto and their respective successors and assigns, except that the
Borrower shall not have the right to assign any rights hereunder or any interest
herein without the prior consent of all the Lenders.

         SECTION 8.04.     Successors and Assigns.

         (a) Whenever in this Agreement any of the parties hereto is referred
to, such reference shall be deemed to include the successors and assigns of
such party; and all covenants, promises and agreements by or on behalf of any
party that are contained in this Agreement shall bind and inure to the benefit
of its successors and assigns.

         (b) Each Lender may assign to one or more assignees all or a portion of
its interests, rights and obligations under this Agreement (including all or a
portion of its Commitment and its outstanding Loans); provided, however, that
(i) except in the case of an assignment to a Lender or an Affiliate of such
Lender, an assignment to a Federal Reserve Bank or an assignment made at any
time an Event of Default shall have occurred and be continuing, the Borrower and
the Agent must give their prior written consent to such assignment (which
consent shall not be unreasonably withheld), (ii) the amount of the Commitment
of the assigning Lender subject to each such assignment (determined as of the
date the Assignment and Assumption with respect to such assignment is delivered
to the Agent) shall not be less than $1,000,000 (or, if less, the entire
remaining amount of such Lender's Commitment) and shall be in an amount that is
an integral multiple of $1,000,000 (or the entire remaining amount of such
Lender's Commitment ), (iii) the parties to each such assignment shall execute
and deliver to the Agent an Assignment and Assumption (such Assignment and
Assumption to be (A) electronically executed and delivered to the Agent via an
electronic settlement system then acceptable to the Agent, which shall initially
be the settlement system of ClearPar, LLC, or (B) manually executed and
delivered together with a processing and recordation fee of $3,500) and (iv) the
assignee, if it shall not be a Lender immediately prior to the assignment, shall
deliver to the agent an Administrative Questionnaire and applicable tax form(s).
Upon acceptance and recording pursuant to Section 8.04(e), from and after the
effective date specified in each Assignment and Assumption (A) the assignee
thereunder shall be a party hereto and, to the extent of the interest assigned
by such Assignment and Assumption, have the rights and obligations of a Lender
under this Agreement and (B) the assigning Lender thereunder shall, to the
extent of the interest assigned by such Assignment and Assumption, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Assumption covering all or the remaining portion of an assigning Lender's rights
and obligations under this Agreement, such Lender shall cease to be a party
hereto (but shall continue to be entitled to the benefits of Sections 2.10, 2.15
and 8.05 as well as to any Fees accrued for its account hereunder and not yet
paid)).

         (c) By executing and delivering an Assignment and Assumption, the
assigning Lender thereunder and the assignee thereunder shall be deemed to
confirm to and agree with each other and the other parties hereto as follows:
(i) such assigning Lender warrants that it is the legal and beneficial owner of
<PAGE>
                                                                            45

the interest being assigned thereby free and clear of any adverse claim; (ii)
except as set forth in (i) above, such assigning Lender makes no representation
or warranty and assumes no responsibility with respect to any statements,
warranties or representations made in or in connection with this Agreement, or
the execution, legality, validity, enforceability, genuineness, sufficiency or
value of this Agreement or any other instrument or document furnished pursuant
hereto or the financial condition of the Borrower or the performance or
observance by the Borrower of any obligations under this Agreement or any other
instrument or document furnished pursuant hereto; (iii) such assignor and such
assignee represents and warrants that it is legally authorized to enter into
such Assignment and Assumption; (iv) such assignee confirms that it has received
a copy of this Agreement, together with copies of the most recent financial
statements delivered pursuant to Section 5.03 and such other documents and
information as it has deemed appropriate to make its own credit analysis and
decision to enter into such Assignment and Assumption; (v) such assignee will
independently and without reliance upon the Agent, such assigning Lender or any
other Lender and based on such documents and information as it shall deem
appropriate at the time, continue to make its own credit decisions in taking or
not taking action under this Agreement; (vi) such assignee appoints and
authorizes the Agent to take such action as agent on its behalf and to exercise
such powers under this Agreement as are delegated to the Agent by the terms
hereof, together with such powers as are reasonably incidental thereto; and
(vii) such assignee agrees that it will perform in accordance with their terms
all the obligations that by the terms of this Agreement are required to be
performed by it as a Lender.

         (d) The Agent, acting for this purpose as an agent of the Borrower,
shall maintain at one of its offices in the City of New York a copy of each
Assignment and Assumption delivered to it and a register for the recordation of
the names and addresses of the Lenders, and the Commitment of, and the principal
amount of the outstanding Loans of, each Lender pursuant to the terms hereof
from time to time (the "Register"). The entries in the Register shall be
conclusive in the absence of manifest error and the Borrower, the Agent and the
Lenders may treat each person whose name is recorded in the Register pursuant to
the terms hereof as a Lender hereunder for all purposes of this Agreement. The
Register shall be available for inspection by each party hereto, at any
reasonable time and from time to time upon reasonable prior notice.

         (e) Upon its receipt of a duly completed Assignment and Assumption
executed by an assigning Lender and an assignee, an Administrative Questionnaire
and, if necessary, applicable tax form(s) completed in respect of the assignee
(unless the assignee shall already be a Lender hereunder), the written consent
of the Agent to such assignment, and the processing and recordation fee referred
to in paragraph (b) above and, if required, the written consent of the Borrower
and the Agent to such assignment, the Agent shall (i) accept such Assignment and
Assumption and (ii) record the information contained therein in the Register. No
assignment shall be effective unless it has been recorded in the Register as
provided in this paragraph (e).

         (f) Each Lender may without the consent of the Borrower or the Agent
sell participations to one or more banks or other entities in all or a portion
of its rights and/or obligations under this Agreement (including all or a
portion of its Commitment and its Loans); provided, however, that (i) such
Lender's obligations under this Agreement shall remain unchanged, (ii) such
Lender shall remain solely responsible to the other parties hereto for the
<PAGE>
                                                                             46

performance of such obligations, (iii) each participating bank or other entity
shall be entitled to the benefit of the cost protection provisions contained in
Sections 2.10, 2.15 and 8.05 to the same extent as if it were the selling Lender
(and limited to the amount that could have been claimed by the selling Lender
had it continued to hold the interest of such participating bank or other
entity), except that all claims made pursuant to such Sections shall be made
through such selling Lender, and (iv) the Borrower, the Agent and the other
Lenders shall continue to deal solely and directly with such selling Lender in
connection with such Lender's rights and obligations under this Agreement, and
such Lender shall retain the sole right to enforce the obligations of the
Borrower under this Agreement and to approve any amendment, modification or
waiver of any provision of this Agreement (other than amendments, modifications
or waivers (x)decreasing any fees payable hereunder or the amount of principal
of, or the rate at which interest is payable on, the outstanding Loans,
(y) extending any scheduled principal payment date or date fixed for the payment
of interest on the outstanding Loans or (z) extending the Commitments).

         (g) Any Lender or participant may, in connection with any assignment or
participation or proposed assignment or participation pursuant to this Section,
disclose to the assignee or participant or proposed assignee or participant any
information relating to the Borrower furnished to such Lender by or on behalf of
the Borrower; provided that, prior to any such disclosure, each such assignee or
participant or proposed assignee or participant shall execute an agreement
whereby such assignee or participant shall agree (subject to customary
exceptions) to preserve the confidentiality of any such information.

         (h) The Borrower shall not assign or delegate any rights and duties
hereunder without the prior written consent of all Lenders, and any attempted
assignment or delegation (except as a consequence of a transaction expressly
permitted under Section 5.10) by the Borrower without such consent shall be
void.

         (i) Any Lender may at any time pledge all or any portion of its rights
under this Agreement to a Federal Reserve Bank; provided that no such pledge
shall release any Lender from its obligations hereunder or substitute any such
Bank for such Lender as a party hereto. In order to facilitate such an
assignment to a Federal Reserve Bank, the Borrower shall, at the request of the
assigning Lender, duly execute and deliver to the assigning Lender a promissory
note or notes evidencing the Loans made to the Borrower by the assigning Lender
hereunder.

         SECTION 8.05. Expenses; Indemnity.

         (a) The Borrower agrees to pay all reasonable out-of-pocket expenses
(including reasonable fees, charges and disbursements of one counsel, unless in
the good faith opinion of the Agent or such counsel, it would be inappropriate
under applicable standards of legal professional conduct, due to an actual or
potential conflict of interest, to have only one counsel) incurred by the Agent
in connection with the preparation, execution and delivery of this Agreement or
in connection with any amendments, modifications or waivers of the provisions
hereof (but only if such amendments, modifications or waivers are requested by
the Borrower) (whether or not the transactions hereby contemplated are
consummated), or incurred by the Agent or any Lender in connection with the
enforcement of their rights in connection with this Agreement (including in
respect of workouts and restructurings) or in connection with the Loans made
hereunder, including the reasonable fees and disbursements of one counsel
(unless in the good faith opinion of the Agent or such counsel, it would be
inappropriate under applicable standards of legal professional conduct, due to
an actual or potential conflict of interest, to have only one counsel) for the
Agent or, in the case of enforcement following an Event of Default, the Lenders.
<PAGE>
                                                                            47


         (b) The Borrower agrees to indemnify each Lender against any loss,
calculated in accordance with the next sentence, or reasonable expense that such
Lender may sustain or incur as a consequence of (i) any failure by the Borrower
to borrow or to refinance, convert or continue any Loan hereunder (including as
a result of the Borrower's failure to fulfill any of the applicable conditions
set forth in Article IV) after irrevocable notice of such borrowing,
refinancing, conversion or continuation has been given pursuant to Section 2.03,
(ii) any payment, prepayment or conversion of a Eurodollar Loan of the Borrower,
or assignment of a Eurodollar Loan of the Borrower required by any other
provision of this Agreement or otherwise made or deemed made, on a date other
than the last day of the Interest Period, if any, applicable thereto, (iii) any
default in payment or prepayment of the principal amount of any outstanding Loan
or any part thereof or interest accrued thereon, as and when due and payable (at
the due date thereof, whether by scheduled maturity, acceleration, irrevocable
notice of prepayment or otherwise) or (iv) the occurrence of any Event of
Default relating to the Borrower, including, in each such case, any loss or
reasonable expense sustained or incurred or to be sustained or incurred by such
Lender in liquidating or employing deposits from third parties, or with respect
to commitments made or obligations undertaken with third parties, to effect or
maintain any Loan hereunder or any part thereof as a Eurodollar Loan. Such loss
shall include an amount equal to the excess, if any, as reasonably determined by
such Lender, of (x) its cost of obtaining the funds for the Loan being paid,
prepaid, refinanced, converted or not borrowed (assumed to be the LIBO Rate for
the period from the date of such payment, prepayment, refinancing or failure to
borrow or refinance to the last day of the Interest Period for such Loan (or, in
the case of a failure to borrow or refinance, the Interest Period for such Loan
that would have commenced on the date of such failure) over (y) the amount of
interest (as reasonably determined by such Lender) that would be realized by
such Lender in reemploying the funds so paid, prepaid or not borrowed or
refinanced for such period or Interest Period, as the case may be.

         (c) The Borrower agrees to indemnify the Agent, each Lender, each of
their respective Affiliates and the directors, officers, employees and agents of
the foregoing (each such person being called an "Indemnitee") against, and to
hold each Indemnitee harmless from, any and all costs, losses, claims, damages,
liabilities and related expenses, including reasonable counsel fees of one
counsel for all Indemnitees (unless in the good faith opinion of such
Indemnitee, it would be inappropriate under applicable standards of legal
professional conduct, due to an actual or potential conflict of interest, to
have only one counsel) and expenses, incurred by or asserted against any
Indemnitee arising out of the Borrower's acts or omissions in connection with
(i) the preparation, execution, delivery, enforcement, performance and
administration of this Agreement, (ii) the use of the proceeds of the Loans or
(iii) any claim, litigation, investigation or proceeding relating to any of the
foregoing, whether or not any Indemnitee is a party thereto, including any of
the foregoing arising from the negligence, whether sole or concurrent, on the
part of any Indemnitee. Notwithstanding the foregoing, such indemnity shall not,
as to any Indemnitee, be available to the extent that such losses, claims,
damages, liabilities or related expenses (i) are determined by a final,
non-appealable judgment of a court of competent jurisdiction to have resulted
<PAGE>
                                                                            48


from the gross negligence or willful misconduct of such Indemnitee, or (ii)
result from any litigation brought by such Indemnitee against the Borrower or by
the Borrower against such Indemnitee, in which a final, non-appealable judgment
has been rendered against such Indemnitee; provided, further, that the Borrower
agrees that it will not, nor will it permit any Subsidiary to, without the prior
written consent of each Indemnitee, settle, compromise or consent to the entry
of any judgment in any pending or threatened claim, action, suit or proceeding
in respect of which indemnification could be sought under the indemnification
provisions of this Section 8.05(c) (whether or not any Indemnitee is an actual
or potential party to such claim, action, suit or proceeding), unless such
settlement, compromise or consent does not include any statement as to an
admission of fault, culpability or failure to act by or on behalf of any
Indemnitee and does not involve any payment of money or other value by any
Indemnitee or any injunctive relief or factual findings or stipulations binding
on any Indemnitee.

         (d) The provisions of this Section shall remain operative and in full
force and effect regardless of the expiration of the term of this Agreement, the
consummation of the transactions contemplated hereby, the repayment of any of
the Loans outstanding, the invalidity or unenforceability of any term or
provision of this Agreement or any investigation made by or on behalf of the
Agent or any Lender. All amounts due under this Section shall be payable on
written demand therefor.

         (e) A certificate of any Lender or the Agent setting forth any amount
or amounts that such Lender or such Agent is entitled to receive pursuant to
paragraph (b) of this Section and containing an explanation in reasonable detail
of the manner in which such amount or amounts shall have been determined shall
be delivered to the Borrower and shall be conclusive absent manifest error.

         SECTION 8.06. Right of Setoff.

         If an Event of Default shall have occurred and be continuing, each
Lender is hereby authorized at any time and from time to time, to the fullest
extent permitted by law, to set off and apply any and all deposits (general or
special, time or demand, provisional or final) at any time held and other
indebtedness at any time owing by such Lender to or for the credit or the
account of the Borrower against any of and all the obligations of the Borrower
now or hereafter existing under this Agreement held by such Lender, irrespective
of whether or not such Lender, shall have made any demand under this Agreement
and although such obligations may be unmatured. The rights of each Lender under
this Section are in addition to other rights and remedies (including other
rights of setoff) which such Lender may have.

         SECTION 8.07. Applicable Law.

         THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY
THE LAWS OF THE STATE OF NEW YORK.

         SECTION 8.08. Waivers; Amendment.

         (a) No failure or delay of the Agent or any Lender in exercising any
power or right hereunder shall operate as a waiver thereof, nor shall any single
or partial exercise of any such right or power, or any abandonment or
discontinuance of steps to enforce such a right or power, preclude any other or
<PAGE>
                                                                            49


further exercise thereof or the exercise of any other right or power. The rights
and remedies of the Agent and the Lenders hereunder are cumulative and are not
exclusive of any rights or remedies that they would otherwise have. No waiver of
any provision of this Agreement or consent to any departure therefrom shall in
any event be effective unless the same shall be permitted by paragraph (b)
below, and then such waiver or consent shall be effective only in the specific
instance and for the purpose for which given. No notice or demand on the
Borrower or any Subsidiary in any case shall entitle such party to any other or
further notice or demand in similar or other circumstances.

         (b) Neither this Agreement nor any provision hereof may be waived,
amended or modified except pursuant to an agreement or agreements in
writing entered into by the Borrower and the Required Lenders; provided,
however, that no such agreement shall (i) decrease the principal amount of,
or extend the maturity of or any scheduled principal payment date or date
for the payment of any interest on, any Loan or date for the payment of any
Commitment Fee, or waive or excuse any such payment or any part thereof, or
decrease the rate of interest on any Loan, without the prior written
consent of each Lender affected thereby, (ii) increase the Commitment of
any Lender, decrease the Commitment Fee payable to any Lender without the
prior written consent of such Lender, or (iii) amend or modify the
provisions of Section 2.12, 2.13 or Section 8.04(h), the provisions of this
Section or the definition of the "Required Lenders", without the prior
written consent of each Lender; provided further, however, that no such
agreement shall amend, modify or otherwise affect the rights or duties of
the Agent without the prior written consent of the Agent. Each Lender shall
be bound by any waiver, amendment or modification authorized by this
Section, and any consent by any Lender or the Agent pursuant to this
Section shall bind any assignee of its rights and interests hereunder.

         SECTION 8.09. Entire Agreement.

         This Agreement (including the schedules and exhibits hereto) and the
Letter Agreements represent the entire contract among the parties relative to
the subject matter hereof and thereof. Any previous agreement, whether written
or oral, among the parties with respect to the subject matter hereof, is
superseded by this Agreement and the Letter Agreements. There are no unwritten
oral agreements between the parties. Nothing in this Agreement, expressed or
implied, is intended to confer upon any party other than the parties hereto any
rights, remedies, obligations or liabilities under or by reason of this
Agreement.

         SECTION 8.10. Severability.

         In the event any one or more of the provisions contained in this
Agreement should be held invalid, illegal or unenforceable in any respect, the
validity, legality and enforceability of the remaining provisions contained
herein shall not in any way be affected or impaired thereby. The parties shall
endeavor in good-faith negotiations to replace the invalid, illegal or
unenforceable provisions with valid provisions the economic effect of which
comes as close as possible to that of the invalid, illegal or unenforceable
provisions.
<PAGE>
                                                                            50

         Section 8.11. Counterparts.

         This Agreement may be executed in two or more counterparts, each of
which shall constitute an original but all of which when taken together shall
constitute but one contract, and shall become effective as provided in Section
8.03.

         SECTION 8.12. Headings.

         Article and Section headings and the Table of Contents used herein are
for convenience of reference only, are not part of this Agreement and are not to
affect the construction of, or to be taken into consideration in interpreting,
this Agreement.

         SECTION 8.13. Interest Rate Limitation.

         (a) Notwithstanding anything herein to the contrary, if at any time the
applicable interest rate, together with all fees and charges which are treated
as interest under applicable law (collectively the "Charges"), as provided for
herein or in any other document executed in connection herewith, or otherwise
contracted for, charged, received, taken or reserved by any Lender, shall exceed
the maximum lawful rate (the "Maximum Rate") which may be contracted for,
charged, taken, received or reserved by such Lender in accordance with
applicable law, the rate of interest payable on the outstanding Loans of such
Lender, together with all Charges payable to such Lender, shall be limited to
the Maximum Rate.

         (b) If the amount of interest, together with all Charges, payable for
the account of any Lender in respect of any interest computation period is
reduced pursuant to paragraph (a) of this Section and the amount of interest,
together with all Charges, payable for such Lender's account in respect of any
subsequent interest computation period, would be less than the Maximum Rate,
then the amount of interest, together with all Charges, payable for such
Lender's account in respect of such subsequent interest computation period
shall, to the extent permitted by applicable law, be automatically increased to
such Maximum Rate; provided that at no time shall the aggregate amount by which
interest paid for the account of any Lender has been increased pursuant to this
paragraph (b) exceed the aggregate amount by which interest, together with all
Charges, paid for its account has theretofore been reduced pursuant to paragraph
(a) of this Section.

         SECTION 8.14. Jurisdiction; Venue.

         (a) The Borrower hereby irrevocably and unconditionally submits, for
itself and its property, to the nonexclusive jurisdiction of any New York
State court or Federal court of the United States of America sitting in New
York City, and any appellate court from any thereof, in any action or
proceeding arising out of or relating to this Agreement, or for recognition
or enforcement of any judgment, and each of the parties hereto hereby
irrevocably and unconditionally agrees that all claims in respect of any
such action or proceeding may be heard and determined in such New York
State or, to the extent permitted by law, in such Federal court. Each of
the parties hereto agrees that a final judgment in any such action or
proceeding shall be conclusive and may be enforced in other jurisdictions
by suit on the judgment or in any other manner provided by law. Subject to
the foregoing and to paragraph (b) below, nothing in this Agreement shall
affect any right that any party hereto may otherwise have to bring any
action or proceeding relating to this Agreement against any other party
hereto in the courts of any jurisdiction.
<PAGE>
                                       51

         (b) The Borrower hereby irrevocably and unconditionally waives, to the
fullest extent it may legally and effectively do so, any objection which it may
now or thereafter have to the laying of venue of any suit, action or proceeding
arising out of or relating to this Agreement in any New York State court or
Federal court of the United States of America sitting in New York City. Each of
the parties hereto hereby irrevocably waives, to the fullest extent permitted by
law, the defense of an inconvenient forum to the maintenance of such action or
proceeding in any such court.

         SECTION 8.15. Confidentiality.

         Each Lender shall use its best efforts to hold in confidence all
information, memoranda, or extracts furnished to such Lender (directly or
through the Agent) by the Borrower hereunder or in connection with the
negotiation hereof; provided that such Lender may disclose any such information,
memoranda or extracts (i) to its Affiliates, accountants or counsel, (ii) to any
regulatory agency having authority to examine such Lender (as the case may be),
(iii) as required by any legal or governmental process or otherwise by law, (iv)
except as provided in the last sentence of Section 5.03, to any person to which
such Lender sells or proposes to sell an assignment or a participation in its
outstanding Loans hereunder, if such other person agrees for the benefit of the
Borrower to comply with the provisions of this Section and (v) to the extent
that such information, memoranda or extracts shall be publicly available or
shall have become known to such Lender independently of any disclosure by the
Borrower hereunder or in connection with the negotiation hereof. Notwithstanding
the foregoing, any Lender may disclose the provisions of this Agreement, the
amounts, maturities and interest rates of its outstanding Loans, and any Fees to
which it is entitled, to any purchaser or potential purchaser of such Lender's
interest in any Loans outstanding. Notwithstanding the foregoing, each party
hereto (and each officer, director, employee, representative, agent and advisor
of each party hereto) may disclose to any and all persons, without limitation of
any kind, the "tax treatment" and "tax structure" (in each case within the
meaning of Treasury Regulation Section 1.6011-4) of the transactions
contemplated by the Loan Documents and all materials of any kind (including
opinions or other tax analyses) that are provided to such person relating to
such "tax treatment" and "tax structure". The foregoing is intended to comply
with the presumption set forth in Treasury Regulation Section
1.6011-4(b)(3)(iii) and should be interpreted in a manner consistent with such
regulation.

                            [Signature pages follow]


<PAGE>
                                                                           S-1


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.


                                TXU ENERGY COMPANY LLC



                               By /s/ Kirk R. Oliver
                                 ---------------------------------
                                  Name:  Kirk R. Oliver
                                  Title: Treasurer and Assistant Secretary



                               CREDIT SUISSE FIRST BOSTON,
                               as Agent and as Lender



                               By /s/ James Moran
                                ---------------------------------
                                 Name:   James Moran
                                 Title:  Director






           Signature Page to TXU Energy Company LLC Credit Agreement
<PAGE>



                                                                     EXHIBIT A
                                                     Form of Borrowing Request


                                BORROWING REQUEST

                                     [Date]


Credit Suisse First Boston,
  as Agent for the lenders referred to below,
[Address]
Attention:
Telecopy:


Ladies and Gentlemen:

         The undersigned, TXU Energy Company LLC (the "Borrower"), refers to the
Credit Agreement, dated as of April 26, 2004 (as it may hereafter be amended,
modified, extended or restated from time to time, the "Agreement"), among the
Borrower, the lenders party thereto (the "Lenders") and Credit Suisse First
Boston, as Agent. Capitalized terms used herein and not otherwise defined herein
shall have the meanings assigned to such terms in the Agreement. The Borrower
hereby gives you notice pursuant to Section 2.03 of the Agreement that it
requests a Borrowing under the Agreement, and in that connection sets forth
below the terms on which such Borrowing is requested to be made:

         (A)   Date of Borrowing (which is a Business Day)    ------------

         (B)   Principal amount of Borrowing1                 ------------

         (C)   Interest rate basis2                           ------------

         (D)   Interest Period and the last day thereof3      ------------

         (E)   Borrower Account No. and Location              ------------



------------------
     1   Not less than $25,000,000 (and in integral multiples of $5,000,000) or
         greater than the Total Commitment then available.

     2   Eurodollar Loan or ABR Loan.

     3   Which shall be subject to the definition of "Interest Period" and end
         not later than the Maturity Date.
<PAGE>

         Upon acceptance of any or all of the Loans made by the Lenders in
response to this request, the Borrower shall be deemed to have represented and
warranted that the applicable conditions to lending specified in Article IV of
the Agreement have been satisfied.

                                        Very truly yours,

                                        TXU ENERGY COMPANY LLC




                                        By   ------------------------------
                                             Name:
                                             Title:















                                      A-2
<PAGE>



                                                                    EXHIBIT B
                                             Form of Assignment and Assumption


                            ASSIGNMENT AND ASSUMPTION

                                     [Date]

         This Assignment and Assumption (the "Assignment and Assumption") is
dated as of the Effective Date set forth below and is entered into by and
between [insert name of Assignor] (the "Assignor") and [insert the name of
Assignee] (the "Assignee"). Capitalized terms used but not defined herein shall
have the meanings given to them in the Credit Agreement identified below (as
amended, modified, extended or restated from time to time, the "Credit
Agreement"). The Standard Terms and Condition set forth in Annex 1 attached
hereto are hereby agreed to and incorporated herein by reference and made a part
of this Assignment and Assumption as if set forth herein in full.

         For an agreed consideration, the Assignor hereby irrevocably sells and
assigns to the Assignee, and the Assignee hereby irrevocably purchases and
assumes from the Assignor, subject to and in accordance with the Standard Terms
and Conditions and the Credit Agreement, as of the Effective Date inserted by
the Agent as contemplated below (i) all of the Assignor's rights and obligations
in its capacity as a Lender under the Credit Agreement and any other documents
or instruments delivered pursuant thereto to the extent related to the amount
and percentage interest identified below of all of such outstanding rights and
obligation of the Assignor under the respective facilities identified below and
(ii) to the extent permitted to be assigned under applicable law, all claims,
suits, causes of action and any other right of the Assignor (in its capacity as
a Lender) against any person, whether known or unknown, arising under or in
connection with the Credit Agreement, any other documents or instruments
delivered pursuant thereto or the loan transactions governed thereby or in any
way based on or related to any of the foregoing, including, but not limited to,
contract claims, tort claims, malpractice claims, statutory claims and all other
claims at law or in equity related to the rights and obligations sold and
assigned pursuant to clause (i) above (the rights and obligations sold and
assigned pursuant to clauses (i) and (ii) above being referred to herein
collectively as, the "Assigned Interest"). Such sale and assignment is without
recourse to the Assignor and, except as expressly provided in this Assignment
and Assumption, without representation or warranty by the Assignor.

1.     Assignor: -----------------------------------

2.     Assignee: -----------------------------------
                 [and is an Affiliate/Approved Fund
                  of [identify Lender]1]

3.     Borrower: -----------------------------------

4.     Agent:    ----------------------------------- , as the administrative
                 agent under the Credit Agreement

-----------------------
1      Select as applicable.

<PAGE>


5.     Credit Agreement          The $1,000,000,000 Credit Agreement dated
                                 as of April 26, 2004 among TXU Energy
                                 Company LLC, as borrower, the lenders party
                                 thereto, and Credit Suisse First Boston, as
                                 administrative agent for the Lenders.


6.     Assigned Interest:
<TABLE>
<CAPTION>
------------------------- ----------------------------- ----------------------------- --------------------------------
<S>                          <C>                         <C>                               <C>
Facility Assigned2            Aggregate Amount of        Amount of Commitment/Loans       Percentage Assigned of
                            Commitment/Loans for all         Assigned*                     Commitment/Loans3
                                    Lenders
------------------------- ----------------------------- ----------------------------- --------------------------------
                          $                             $                                                   %
------------------------- ----------------------------- ----------------------------- --------------------------------
                          $                             $                                                   %
------------------------- ----------------------------- ----------------------------- --------------------------------
                          $                             $                                                   %
------------------------- ----------------------------- ----------------------------- --------------------------------
                          $                             $                                                   %
------------------------- ----------------------------- ----------------------------- --------------------------------
</TABLE>
         Effective Date:___, 20 ___ [TO BE INSERTED BY ADMINISTRATIVE AGENT AND
WHICH SHALL BE THE EFFECTIVE DATE OF RECORDATION OF TRANSFER IN THE REGISTER
THEREFOR.]











-----------------------
 2    Fill in appropriate terminology for the types of facilities under the
      Credit Agreement that are being assigned under this Assignment (e.g.
      "Revolving Credit Commitment." "Term Loan Commitment," etc.)
 *
      Amount to be adjusted by the counterparties to take into account any
      payments or prepayments made between the Trade Date and the Effective
      Date.
3     Set forth, to at least 9 decimals, as a percentage of the Commitment/Loans
      of all Lenders thereunder.


                                      B-2

<PAGE>


      The terms set forth in this Assignment and Assumption are hereby agreed
      to:

                                  ASSIGNOR:
                                  [NAME OF ASSIGNOR]


                                By:---------------------------------
                                   Title:



                                   ASSIGNEE:
                                   [NAME OF ASSIGNEE]


                                By:---------------------------------
                                   Title:



Consented to and Accepted:

[NAME OF ADMINISTRATIVE AGENT], as
  Administrative Agent


By:----------------------------------
     Title:



By:----------------------------------
     Title:







                                      B-3
<PAGE>

                                                                      ANNEX 1


                             [              ]4

                        STANDARD TERM AND CONDITIONS FOR
                            ASSIGNMENT AND ASSUMPTION

                  1. Representations and Warranties.

                  1.1 Assignor. The Assignor (a) represents and warrants that
(i) it is the legal and beneficial owner of the Assigned interest, (ii) the
Assigned interest is free and clear of any lien, encumbrance or other adverse
claim and (iii) it has full power and authority, and has taken all action
necessary, to execute and deliver this Assignment and Assumption and to
consummate the transactions contemplated hereby; and (b) assumes no
responsibility with respect to (i) any statements, warranties or representations
made in or in connection with the Credit Agreement or any other document related
thereto, (ii) the execution, legality, enforceability, genuineness, sufficiency
or value of the Credit Agreement or any collateral thereunder, (iii) the
financial condition of the Borrower, any of its Subsidiaries or Affiliates or
any other person obligated in respect of the Credit Agreement or (iv) the
performance or observance by the Borrower, any of its Subsidiaries or Affiliates
or any other person of any of their respective obligations under the Credit
Agreement.

                  1.2 Assignee. The Assignee (a) represents and warrants that
(i) it has full power and authority, and has taken all action necessary, to
execute and deliver this Assignment and Assumption and to consummate the
transactions contemplated hereby and to become a Lender under the Credit
Agreement, (ii) from and after the Effective Date, it shall be bound by the
provisions of the Credit Agreement as a Lender thereunder and, to the extent of
the Assigned Interest, shall have the obligations of a Lender thereunder, (iv)
it has received a copy of the Credit Agreement, together with copies of the most
recent financial statements delivered pursuant to Section 5.03 thereof, as
applicable, and such other documents and information as it has deemed
appropriate to make its own credit analysis and decision to enter into this
Assignment and Assumption and to purchase the Assigned Interest on the basis of
which it has made such analysis and decision independently and without reliance
on the Agent or any other Lender, and (v) if it is a Non-U.S. Lender, attached
to the Assignment and Assumption is any documentation required to be delivered
by it pursuant to the terms of the Credit Agreement, duly completed and executed
by the Assignee; and (b) agrees that (i) it will, independently and without
reliance on the Agent, the Assignor or any other Lender, and based on such
documents and information as it shall deem appropriate at the time, continue to
make its own credit decisions in taking or not taking action under the Credit
Agreement, and (ii) it will perform in accordance with their terms all of the
obligations which by the terms of the Credit Agreement are required to be
performed by it as a Lender.

                  2. Payments. From and after the Effective Date, the Agent
shall make all payments in respect of the Assigned Interest (including payments
of principal, interest, fees and other amounts) to the Assignor for amounts
which have accrued to but excluding the Effective Date and to the Assignee for
amounts which have accrued from and after the Effective Date.

----------------------
4   Describe Credit Agreement at option of Administrative Agent.
<PAGE>
                                                                              2

                  3. General Provisions. This Assignment and Assumption shall be
binding upon, and inure to the benefit of, the parties hereto and their
respective successors and assigns. This Assignment and Assumption may be
executed in any number of counterparts, which together shall constitute one
instrument. Delivery of an executed counterpart of a signature page of this
Assignment and Assumption by telecopy shall be effective as delivery of a
manually executed counterpart of this Assignment and Assumption. This Assignment
and Assumption shall be governed by, and construed in accordance with, the law
of the State of New York.

<PAGE>


                                                                  SCHEDULE 2.01


                                   COMMITMENTS


------------------------------------------------ ---------------------------
                       NAME OF LENDER                   COMMITMENT
------------------------------------------------ ---------------------------
Credit Suisse First Boston                             $1,000,000,000
------------------------------------------------ ---------------------------
Total                                                  $1,000,000,000
------------------------------------------------ ---------------------------



<PAGE>



                                                                SCHEDULE 5.14


                             RESTRICTIVE AGREEMENTS


         None.