<PAGE>

                                                                  CONFORMED COPY

                                                                   EXHIBIT 10(b)
--------------------------------------------------------------------------------


              TEXAS UTILITIES COMPANY (DOING BUSINESS AS TXU CORP)
                              TXU ELECTRIC COMPANY
                                 TXU GAS COMPANY

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

                                 $1,400,000,000
            FIVE-YEAR SECOND AMENDED AND RESTATED COMPETITIVE ADVANCE
                     AND REVOLVING CREDIT FACILITY AGREEMENT

                                  "FACILITY B"

                          Dated as of February 25, 2000

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


                            THE CHASE MANHATTAN BANK,
         AS ADMINISTRATIVE AGENT AND COMPETITIVE ADVANCE FACILITY AGENT

                         LEAD ARRANGER AND BOOK MANAGER
                              CHASE SECURITIES INC.

                              CO-SYNDICATION AGENTS
                              BANK OF AMERICA, N.A.
                                 CITIBANK, N.A.

                               DOCUMENTATION AGENT
                              THE BANK OF NEW YORK


--------------------------------------------------------------------------------
<PAGE>

                                TABLE OF CONTENTS


                                                                           PAGE
                                                                           ----

                                    ARTICLE I
                            DEFINITIONS; CONSTRUCTION

SECTION 1.01.   Defined Terms. ..............................................1
SECTION 1.02.   Terms Generally. ...........................................18

                                   ARTICLE II
                                   THE CREDITS

SECTION 2.01.   Commitments. ...............................................19
SECTION 2.02.   Loans. .....................................................19
SECTION 2.03.   Competitive Bid Procedure. .................................21
SECTION 2.04.   Standby Borrowing Procedure. ...............................23
SECTION 2.05.   Letters of Credit ..........................................24
SECTION 2.06.   Fees. ......................................................27
SECTION 2.07.   Repayment of Outstanding Credits; Evidence of
                Indebtedness. ..............................................28
SECTION 2.08.   Interest on Loans. .........................................28
SECTION 2.09.   Default Interest. ..........................................29
SECTION 2.10.   Alternate Rate of Interest. ................................29
SECTION 2.11.   Termination and Reduction of Commitments. ..................30
SECTION 2.12.   Prepayment. ................................................30
SECTION 2.13.   Reserve Requirements; Change in Circumstances. .............31
SECTION 2.14.   Change in Legality. ........................................33
SECTION 2.15.   Pro Rata Treatment. ........................................33
SECTION 2.16.   Sharing of Setoffs. ........................................34
SECTION 2.17.   Payments. ..................................................34
SECTION 2.18.   Taxes. .....................................................35
SECTION 2.19.   Assignment of Commitments Under Certain Circumstances.......38

                                   ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

SECTION 3.01.   Organization; Powers. ......................................38
SECTION 3.02.   Authorization. .............................................38
SECTION 3.03.   Enforceability. ............................................39
SECTION 3.04.   Governmental Approvals. ....................................39
SECTION 3.05.   Financial Statements. ......................................39
SECTION 3.06.   Litigation. ................................................40
SECTION 3.07.   Federal Reserve Regulations. ...............................40
SECTION 3.08.   Investment Company Act; Public Utility Holding
                     Company Act. ..........................................41
SECTION 3.09.   No Material Misstatements. .................................41


                                       i
<PAGE>

                                                                           PAGE
                                                                           ----


SECTION 3.10.   Taxes. .....................................................41
SECTION 3.11.   Employee Benefit Plans. ....................................41
SECTION 3.12.   Significant Subsidiaries. ..................................42
SECTION 3.13.   Environmental Matters. .....................................42
SECTION 3.14.   Year 2000 Compliance. ......................................42

                                   ARTICLE IV
                                   CONDITIONS

SECTION 4.01.   Restatement Date. ..........................................43
SECTION 4.02.   Conditions for All Extensions of Credit. ...................44

                                    ARTICLE V
                                    COVENANTS

SECTION 5.01.   Existence. .................................................45
SECTION 5.02.   Business and Properties. ...................................45
SECTION 5.03.   Financial Statements, Reports, Etc. ........................45
SECTION 5.04.   Insurance. .................................................47
SECTION 5.05.   Taxes, Etc. ................................................47
SECTION 5.06.   Maintaining Records; Access to Properties and
                     Inspections. ..........................................47
SECTION 5.07.   ERISA. .....................................................47
SECTION 5.08.   Use of Proceeds. ...........................................48
SECTION 5.09.   Consolidations, Mergers, Sales and Acquisitions of
                    Assets and Investments in Subsidiaries. ................48
SECTION 5.10.   Limitations on Liens. ......................................50
SECTION 5.11.   Fixed Charge Coverage. .....................................52
SECTION 5.12.   Equity Capitalization Ratio. ...............................52
SECTION 5.13.   Restrictive Agreements. ....................................52

                                   ARTICLE VI
                                EVENTS OF DEFAULT


                                   ARTICLE VII
                                   THE AGENTS


                                  ARTICLE VIII
                                  MISCELLANEOUS

SECTION 8.01.   Notices. ...................................................57
SECTION 8.02.   Survival of Agreement. .....................................58
SECTION 8.03.   Binding Effect. ............................................58
SECTION 8.04.   Successors and Assigns. ....................................59
SECTION 8.05.   Expenses; Indemnity. .......................................62
SECTION 8.06.   Right of Setoff. ...........................................63
SECTION 8.07.   Applicable Law. ............................................64
SECTION 8.08.   Waivers; Amendment. ........................................64
SECTION 8.09.   Entire Agreement. ..........................................64


                                       ii
<PAGE>

                                                                           PAGE
                                                                           ----


SECTION 8.10.   Severability. ..............................................65
SECTION 8.11.   Counterparts. ..............................................65
SECTION 8.12.   Headings. ..................................................65
SECTION 8.13.   Interest Rate Limitation. ..................................65
SECTION 8.14.   Jurisdiction; Venue. .......................................66
SECTION 8.15.   Confidentiality. ...........................................66
SECTION 8.16.   Transition Provisions. .....................................67


EXHIBITS AND SCHEDULES

Exhibit A-1    -    Form of Competitive Bid Request
Exhibit A-2    -    Form of Notice of Competitive Bid Request
Exhibit A-3    -    Form of Competitive Bid
Exhibit A-4    -    Form of Competitive Bid Accept/Reject Letter
Exhibit A-5    -    Form of Standby Borrowing Request
Exhibit A-6         Form of Request for Issuance
Exhibit B      -    Administrative Questionnaire
Exhibit C      -    Form of Assignment and Acceptance

Schedule 2.01  -    Commitments


                                      iii
<PAGE>

          FIVE-YEAR SECOND AMENDED AND RESTATED COMPETITIVE ADVANCE AND
          REVOLVING CREDIT FACILITY AGREEMENT (the "AGREEMENT"), dated as of
          February 25, 2000, among TEXAS UTILITIES COMPANY, a Texas corporation
          doing business as TXU Corp ("TXU"); TXU ELECTRIC COMPANY, a Texas
          corporation and a wholly owned subsidiary of TXU ("TXU ELECTRIC"), and
          TXU GAS COMPANY, a Texas corporation and a wholly owned subsidiary of
          TXU ("TXU GAS" and, together with TXU and TXU Electric, the
          "BORROWERS", and each individually, a "BORROWER"); the lenders listed
          in Schedule 2.01 (together with their successors and assigns, the
          "LENDERS"); and THE CHASE MANHATTAN BANK ("CHASE"), as Competitive
          Advance Facility Agent (in such capacity, the "CAF AGENT"), as
          administrative agent for the Lenders (in such capacity, the
          "ADMINISTRATIVE AGENT"; and, together with the CAF Agent, the
          "AGENTS") and as fronting bank for the Letters of Credit issued
          hereunder.

     Pursuant to the terms of that certain Five-Year Amended and Restated
Competitive Advance and Revolving Credit Facility Agreement, dated as of May 28,
1998, as amended and restated as of June 30, 1999 (the "ORIGINAL AGREEMENT"),
among the Borrowers, the financial institutions party thereto as lenders (the
"ORIGINAL LENDERS"), the CAF Agent and Chase Bank of Texas, National Association
("CHASE BANK OF TEXAS"), as administrative agent for the Original Lenders, the
Original Lenders agreed to extend credit in the form of Standby Borrowings (such
term and each other capitalized term used herein having the meaning given it in
Article I) to the Borrowers in an aggregate principal amount at any time
outstanding not in excess of $1,400,000,000. The Original Lenders also agreed to
provide a procedure pursuant to which the Borrowers may invite the Lenders to
bid on an uncommitted basis on short-term borrowings by the Borrowers. Certain
financial institutions that are not Original Lenders wish to become parties
hereto and the parties hereto wish to extend the availability of the Commitments
and to provide a facility for the issuance of Letters of Credit in an aggregate
amount not in excess of $300,000,000. Additionally, the parties hereto have
agreed that Chase shall replace Chase Bank of Texas as Administrative Agent.
Accordingly, in order to reflect the foregoing as well as certain other
modifications to the Original Agreement, the parties hereto now wish to amend
and restate the Original Agreement as herein set forth.

     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.
<PAGE>

                                                                               2


     "ABR LOAN" shall mean any Standby 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
2.10 or 2.14(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 the outstanding Voting Shares of
TXU (within the meaning of Section 13(d) or 14(d) of the Securities Exchange Act
of 1934, as amended, and the applicable rules and regulations thereunder).

     "ADJUSTED COMMITMENT" shall have the meaning assigned to such term in
Section 5.09(b).

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

     "ADMINISTRATIVE FEES" shall have the meaning assigned to such term in
Section 2.06(b).

     "ADMINISTRATIVE QUESTIONNAIRE" shall mean an Administrative Questionnaire
in the form of Exhibit B hereto.

     "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.

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

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

     "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 greatest of (a) the
Federal Funds Effective Rate in effect on such day plus 1/2 of 1%, (b) the Base
CD Rate in effect on such day plus 1% and (c) the Prime Rate in effect on such
day. For purposes hereof, "PRIME RATE" shall mean the rate of interest per annum
publicly announced from time to time by Chase 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; "BASE CD
RATE" shall mean the sum of (a) the product of (i) the Three-Month Secondary CD
Rate and (ii) Statutory Reserves and (b) the Assessment Rate; "THREE-MONTH
SECONDARY CD RATE" shall mean, for any day, the secondary market rate for
three-month certificates of deposit reported as being in effect on such day (or,
if such day shall not be a Business Day, the next preceding Business Day) by the
Board through the public information telephone line of the Federal Reserve Bank
of New York (which rate will, under the current practices of the Board, be
published in Federal Reserve Statistical Release H.15(519) during the week
following such day), or, if such rate shall not be so reported on such day or
such next preceding Business Day, the average of the secondary market quotations
for three-month certificates of deposit of major money center banks in New York
<PAGE>

                                                                               3


City received at approximately 10:00 a.m., New York City time, on such day (or,
if such day shall not be a Business Day, on the next preceding Business Day) by
the Administrative Agent from three New York City negotiable certificate of
deposit dealers of recognized standing selected by it; "ASSESSMENT RATE" shall
mean, for any day, the annual rate (rounded upwards to the next 1/100 of 1%)
most recently estimated by Chase as the then current net annual assessment rate
that will be employed in determining amounts payable by Chase to the Federal
Deposit Insurance Corporation (or any successor) for insurance by such
Corporation (or such successor) of time deposits made in US dollars at Chase's
domestic offices; 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 (rounded upwards to the next 1/100th of 1%), as
determined by Chase, of the quotations for the day of such transactions received
by Chase from three Federal funds brokers of recognized standing selected by it.
If for any reason Chase shall have determined (which determination shall be
conclusive absent manifest error; provided that Chase shall, upon request,
provide to the applicable 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 Chase to
obtain sufficient quotations in accordance with the terms thereof, the Alternate
Base Rate shall be determined without regard to clause (a) 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 with respect to any Borrower, the percentage
per annum set forth in the column identified as Level 1, Level 2, Level 3 or
Level 4 below, based upon the Level corresponding to the higher Debt Rating of
such Borrower at the time of determination, provided, that the Applicable
Margins set forth below with respect to each Level shall be increased by .125%
with respect to Eurodollar Loans outstanding at any time during a Utilization
Period, provided, further, that the Applicable Margin with respect to ABR Loans
outstanding at any time during a Utilization Period shall be equal to, for each
Level, the then-effective Applicable Margin for Eurodollar Loans less 1.00% (but
not negative). Any change in the Applicable Margin shall be effective on the
date on which the applicable rating agency announces any change in the Debt
Rating.
<PAGE>

                                                                               4


================================================================================
                   Level 1         Level 2       Level 3         Level 4
                   -------         -------       -------         -------
S&P            BBB+ or better       BBB           BBB-        BB+ or below*
Moody's        Baa1 or better       Baa2          Baa3        Ba1 or below*
               --------------       ----          ----        -------------
--------------------------------------------------------------------------------
Percentage Per Annum
--------------------------------------------------------------------------------
Eurodollar        .450%            .675%         .875%           1.025%
 Margin
--------------------------------------------------------------------------------
  ABR               0                0             0              .025%
 Margin
================================================================================

* or unrated

     "ASSIGNMENT AND ACCEPTANCE" shall mean an assignment and acceptance entered
into by a Lender and an assignee in the form of Exhibit C.

     "AUCTION FEES" shall mean the competitive loan fees provided for in the
Letter Agreement, payable to the CAF Agent by the applicable Borrower at the
time of delivery of each Competitive Bid Request by such Borrower to the CAF
Agent pursuant to Section 2.03.

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

     "BOARD OF DIRECTORS" shall mean the Board of Directors of a Borrower or any
duly authorized committee thereof.

     "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 (or, in the case of a Competitive Borrowing, by the Lender or Lenders
whose Competitive Bids have been accepted pursuant to Section 2.03) on a single
date and as to which a single Interest Period is in effect.

     "BUSINESS DAY" shall mean any day (other than a day which 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.

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

     "CASH COLLATERAL ACCOUNT" shall have the meaning assigned to such term in
Article VI.

     "A CHANGE IN CONTROL" shall be deemed to have occurred if (a) any 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) shall have acquired beneficial ownership of more
than 30% of the outstanding Voting Shares of TXU (within the meaning of Section
<PAGE>

                                                                               5


13(d) or 14(d) of the Securities Exchange Act of 1934, as amended, and the
applicable rules and regulations thereunder); provided that a Change in Control
shall not be deemed to have occurred if such acquisition has been approved,
prior to the Acquisition Date and the date on which any tender offer for Voting
Shares of TXU was commenced, by a majority of the Disinterested Directors of
TXU, or (b) during any period of 12 consecutive months, commencing before or
after the date of this Agreement, individuals who on the first day of such
period were directors of TXU (together with any replacement or additional
directors who were nominated or elected by a majority of directors then in
office) cease to constitute a majority of the Board of Directors of TXU.

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

     "CHASE BANK OF TEXAS" shall have the meaning given such term in the
recitals hereto.

     "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 set forth in Schedule 2.01 hereto to make Loans and to purchase
participations in the reimbursement obligations of each of the Borrowers to the
Fronting Bank, as such Commitment may be permanently terminated or reduced from
time to time pursuant to Section 2.11 or 5.09(b) 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.

     "COMPETITIVE BID" shall mean an offer by a Lender to make a Competitive
Loan pursuant to Section 2.03.

     "COMPETITIVE BID ACCEPT/REJECT LETTER" shall mean a notification made by a
Borrower pursuant to Section 2.03(d) in the form of Exhibit A-4.

     "COMPETITIVE BID MARGIN" shall mean, as to any Eurodollar Competitive Loan,
the margin (expressed as a percentage rate per annum in the form of a decimal to
no more than four decimal places) to be added to or subtracted from the LIBO
Rate in order to determine the interest rate applicable to such Loan, as
specified in the Competitive Bid relating to such Loan.

     "COMPETITIVE BID RATE" shall mean, as to any Competitive Bid, (i) in the
case of a Eurodollar Loan, the LIBO Rate for the Interest Period requested in
such Competitive Bid plus the Competitive Bid Margin, and (ii) in the case of a
Fixed Rate Loan, the fixed rate of interest offered by the Lender making such
Competitive Bid.

     "COMPETITIVE BID REQUEST" shall mean a request made pursuant to Section
2.03 in the form of Exhibit A-1.
<PAGE>

                                                                               6


     "COMPETITIVE BORROWING" shall mean a Borrowing consisting of a Competitive
Loan or concurrent Competitive Loans from the Lender or Lenders whose
Competitive Bids for such Borrowing have been accepted under the bidding
procedure described in Section 2.03.

     "COMPETITIVE LOAN" shall mean a Loan made pursuant to the bidding procedure
described in Section 2.03. Each Competitive Loan shall be a Eurodollar
Competitive Loan or a Fixed Rate Loan.

     "CONSOLIDATED EARNINGS AVAILABLE FOR FIXED CHARGES" for any twelve-month
period shall mean (i) consolidated net income, calculated after deducting
preferred stock dividends and preferred securities distributions of
Subsidiaries, but before any extraordinary items and before the effect in such
twelve-month period of any change in accounting principles promulgated by the
Financial Accounting Standards Board becoming effective after December 31, 1999,
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 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 TXU 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 amounts shall be excluded: (A)
the effect of any regulatory disallowances resolving fuel or other issues in any
proceeding before the Commission or the Railroad Commission of Texas in an
aggregate amount not to exceed $100,000,000, (B) any non-cash book losses
relating to the sale or write-down of assets and (C) charges in respect of
one-time costs incurred in connection with mergers and acquisitions in an
aggregate amount not to exceed $20,000,000 in any such twelve-month period.

     "CONSOLIDATED FIXED CHARGES" for any twelve-month period shall mean the sum
(without duplication) of (i) interest on mortgage bonds, (ii) interest on other
long-term debt, (iii) other interest expense, including interest on short-term
debt and the current portion of long-term debt, and (iv) preferred stock
dividends and preferred securities distributions of Subsidiaries, all determined
for such twelve-month period with respect to TXU and its Consolidated
Subsidiaries on a consolidated basis. For purposes of such calculation,
long-term debt shall not include the principal amount of, or interest on,
Qualified Transition Bonds.

     "CONSOLIDATED SHAREHOLDERS' EQUITY" shall mean the sum (without
duplication) of (i) total common stock equity plus (ii) preferred stock not
subject to mandatory redemption, each (in the case of clauses (i) and (ii))
determined with respect to TXU and its Consolidated Subsidiaries on a
consolidated basis, plus (iii) Equity-Linked Securities plus (iv) Equity-Credit
Preferred Securities in an aggregate amount not in excess of $2,000,000,000.
<PAGE>

                                                                               7


     "CONSOLIDATED SUBSIDIARY" shall mean at any date any Subsidiary or other
entity the accounts of which would be consolidated with those of TXU, TXU
Electric or TXU Gas, as the case may be, in its consolidated financial
statements as of such date.

     "CONSOLIDATED TOTAL CAPITALIZATION" shall mean the sum of (i) total common
stock equity, (ii) preferred stock and preferred securities, and (iii) long-term
debt (less amounts due currently), all determined with respect to TXU and its
Consolidated Subsidiaries on a consolidated basis. For purposes of such
calculation, long-term debt shall not include the principal amount of, or
interest on, Qualified Transition Bonds.

     "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 TXU, are treated as a single employer under
Section 414(b) or 414(c) of the Code.

     "DEBT RATING" shall mean, with respect to any Borrower, the ratings
(whether explicit or implied) assigned by S&P and Moody's to such Borrower's
senior unsecured non-credit enhanced long term debt.

     "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 Securities Exchange Act of 1934, as amended, 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, (A) issued by TXU or a Consolidated Subsidiary, (B) that are not
subject to mandatory redemption or the underlying securities, if any, of which
are not subject to mandatory redemption, (C) that are perpetual or mature no
less than 30 years from the date of issuance, (D) 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 (E) the terms of which permit the deferral of the
payment of interest or distributions thereon to a date occurring after the
Maturity Date and after the "Maturity Date" under and as defined in the Facility
A Credit Agreement.
<PAGE>

                                                                               8


     "EQUITY-LINKED SECURITIES" shall mean the 14 million equity-linked
securities issued by TXU in July and August 1998 known as "Feline Prides".

     "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 relevant Borrower is a member.

     "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 any Borrower or any of its ERISA
Affiliates from any Plan or Multiemployer Plan; (iv) the receipt by any 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 any 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 "prohibited transaction" with
respect to which any 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 any Borrower other than a liability to
pay premiums or benefits when due.

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

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

     "EURODOLLAR LOAN" shall mean any Eurodollar Competitive Loan or Eurodollar
Standby Loan.

     "EURODOLLAR STANDBY LOAN" shall mean any Standby 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.

     "EXTENSION OF CREDIT" means (i) the making of a Loan, (ii) the issuance of
a Letter of Credit or the amendment of any Letter of Credit having the effect of
extending the stated termination date thereof or increasing the maximum amount
available to be drawn thereunder or (iii) the funding of a participation in the
unpaid reimbursement obligation of a Borrower with respect to a payment made by
<PAGE>

                                                                               9


the Fronting Bank under a Letter of Credit issued for the account of such
Borrower (excluding any reimbursement obligation that has been repaid with the
proceeds of any Loan), and the Outstanding Credits resulting from any of the
foregoing actions.

     "FACILITY A CREDIT AGREEMENT" shall mean the 364-Day Second Amended and
Restated Competitive Advance and Revolving Credit Facility Agreement, dated as
of the date hereof, among the Borrowers and certain other parties named therein,
as amended, modified or supplemented from time to time.

     "FACILITY FEE" shall have the meaning assigned to such term in Section
2.06(a).

     "FACILITY FEE PERCENTAGE" shall mean the percentage per annum set forth in
the column identified as Level 1, Level 2, Level 3 or Level 4 below, based upon
the Level corresponding to the higher Debt Rating of TXU at the time of
determination. Any change in the Facility Fee Percentage shall be effective on
the date on which the applicable rating agency announces any change in the
applicable Debt Rating.

================================================================================
               Level 1           Level 2      Level 3       Level 4
               -------           -------      -------       -------
S&P         BBB+ or better         BBB         BBB-      BB+ or below*
Moody's     Baa1 or better         Baa2        Baa3      Ba1 or below*
            --------------         ----        ----      -------------
--------------------------------------------------------------------------------
Percentage Per Annum
--------------------------------------------------------------------------------
Facility Fee   0.175%             0.200%      0.250%        0.350%
================================================================================

* or unrated

     "FEDERAL FUNDS EFFECTIVE RATE" shall have the meaning set forth in the
definition of "Alternate Base Rate".

     "FEES" shall mean the Facility Fee, the LC Fee, the Fronting Fee, the
Auction Fees, the Administrative Fees and any other fees provided for in the
Letter Agreement.

     "FINANCIAL OFFICER" of any corporation 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.

     "FIRST MORTGAGE" shall mean (i) the TXU Electric Mortgage and (ii) any
Mortgage and Deed of Trust of TXU Electric issued to refund, to replace or in
substitution for the TXU Electric Mortgage.

     "FIXED RATE BORROWING" shall mean a Borrowing comprised of Fixed Rate
Loans.

     "FIXED RATE LOAN" shall mean any Competitive Loan bearing interest at a
fixed percentage rate per annum (the "FIXED RATE") (expressed in the form of a
decimal to no more than four decimal places) specified by the Lender making such
Loan in its Competitive Bid.
<PAGE>

                                                                              10


     "FRONTING BANK" shall mean Chase, in its capacity as issuer of any Letter
of Credit, provided, that Chase may, in its discretion, arrange for one or more
Letters of Credit to be issued by any of its Affiliates (including, without
limitation, Chase Manhattan Bank Delaware), in which case the term "Fronting
Bank" shall include any such Affiliate with respect to Letters of Credit issued
by such Affiliate.

     "FRONTING FEE" shall have the meaning assigned to such term in Section
2.06(d).

     "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.

     "INDEBTEDNESS" of any person shall mean all indebtedness representing money
borrowed which is created, assumed, incurred or guaranteed in any manner by such
person or for which such person is responsible or liable (whether by agreement
to purchase indebtedness of, or to supply funds to or invest in, others or
otherwise).

     "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 or a Fixed Rate Loan
with an Interest Period of more than 90 days' duration, each day that would have
been an Interest Payment Date for such Loan had successive Interest Periods of
three months' duration or 90 days' duration, as the case may be, been applicable
to such Loan and, in addition, the date of any prepayment of each Loan or
conversion of such Loan to a Loan of a different Type.

     "INTEREST PERIOD" shall mean (a) 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, (b) as to any ABR Borrowing, the
period commencing on the date of such Borrowing and ending on the earliest of
(i) the next succeeding March 31, June 30, September 30 or December 31, (ii) the
Maturity Date, and (iii) the date such Borrowing is repaid or prepaid in
accordance with Section 2.07 or Section 2.12 and (c) as to any Fixed Rate
Borrowing, the period commencing on the date of such Borrowing and ending on the
date specified in the Competitive Bids in which the offers to make the Fixed
Rate Loans comprising such Borrowing were extended, which shall not be earlier
than seven days after the date of such Borrowing or later than 360 days after
the date of such Borrowing; 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.
<PAGE>

                                                                              11

     "LC COMMITMENT AMOUNT" shall mean $300,000,000.

     "LC FEE" shall have the meaning assigned to such term in Section 2.06(d).

     "LC OUTSTANDINGS" shall mean, on any date of determination, the sum of (i)
the undrawn stated amounts of all Letters of Credit that are outstanding on such
date and (ii) the aggregate principal amount of all unpaid reimbursement
obligations of the Borrowers on such date with respect to payments made by the
Fronting Bank under Letters of Credit (excluding reimbursement obligations that
have been repaid with the proceeds of any Loan).

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

     "LETTER AGREEMENT" shall mean, collectively, (i) the Commitment Letter,
dated February 3, 2000, among TXU, Chase and Chase Securities Inc., and (ii) the
Fee Letter, dated February 3, 2000, among TXU, Chase and Chase Securities Inc.,
each as amended, modified or supplemented from time to time.

     "LETTER OF CREDIT" means a letter of credit that is issued by the Fronting
Bank pursuant to Section 2.05, as such letter of credit may from time to time be
amended, modified or extended in accordance with the terms of this Agreement.

     "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 the
Administrative Agent 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 $5,000,000 and for a maturity comparable to such Interest Period are
offered by the principal London office of Chase 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 Competitive Loan or a Standby Loan, whether made as a
Eurodollar Loan, an ABR Loan or a Fixed Rate Loan, as permitted hereby.
<PAGE>

                                                                              12


     "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.

     "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 TXU and its Subsidiaries
taken as a whole which makes any Borrower unable to perform any of its
obligations under this Agreement or the Facility A Credit Agreement or which
impairs the rights of, or benefits available to, the Lenders or Fronting Bank
under this Agreement or the "Lenders" under and as defined in the Facility A
Credit Agreement.

     "MATURITY DATE" shall mean the earlier to occur of (i) February 25, 2005
and (ii) the date of termination or reduction in whole of the Commitments
pursuant to Section 2.11 or Article VI.

     "MOODY'S" shall mean Moody's Investors Service, Inc.

     "MULTIEMPLOYER PLAN" shall mean a multiemployer plan as defined in Section
4001(a)(3) of ERISA to which any 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.

     "NOTICE OF COMPETITIVE BID REQUEST" shall mean a notification made pursuant
to Section 2.03 in the form of Exhibit A-2.

     "OPERATING AGREEMENTS" shall mean the (i) Operating Agreement, dated April
28, 1978, between TXU Mining and Dallas Power & Light Company, Texas Electric
Service Company and Texas Power & Light Company, as amended by the Modification
of Operating Agreement, dated April 20, 1979, between the same parties and (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, as the same may be amended from time to time, provided that any
resulting amended agreement shall not increase the scope of Liens permitted
under Section 5.10(i).

     "ORIGINAL AGREEMENT" shall have the meaning given such term in the recitals
hereto.

     "ORIGINAL LENDERS" shall have the meaning given such term in the recitals
hereto.

     "OUTSTANDING CREDITS" means, on any date of determination, an amount equal
to (i) the aggregate principal amount of all Loans outstanding on such date plus
(ii) the LC Outstandings on such date.

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

                                                                              13


     "PERCENTAGE" means, for any Lender on any date of determination, the
percentage obtained by dividing such Lender's Commitment on such day 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 which 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 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;
<PAGE>

                                                                              14


     (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, 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 any Borrower or any ERISA Affiliate.

     "QUALIFIED TRANSITION BONDS" shall mean securities, however denominated,
that are (i) issued by a Consolidated Subsidiary formed and operating solely for
the purpose of (A) purchasing and owning transition property created under a
"financing order" (as such term is defined in the Texas Utilities Code) issued
by the Public Utility Commission of Texas, (B) issuing such securities pursuant
to such order, (C) pledging its interests in such transition property to secure
such securities and (D) engaging in activities ancillary to those described in
clauses (A), (B) and (C) above, (ii) secured by or otherwise payable from
transition charges authorized pursuant to such order, and (iii) non-recourse to
TXU or any of its other Consolidated Subsidiaries.
<PAGE>

                                                                              15


     "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).

     "REQUEST FOR ISSUANCE" shall mean a request made pursuant to Section
2.05(a) in the form of Exhibit A-6.

     "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 Article VI, or (ii) if the Total
Commitment has been terminated, Lenders holding Outstanding Credits representing
in excess of 50% of the aggregate principal amount of the Outstanding Credits.

     "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.

     "RESTATEMENT DATE" shall have the meaning assigned to that term in Section
4.01.

     "S&P" shall mean Standard & Poor's Ratings Services (a division of The
McGraw-Hill Companies, Inc.).

     "SEC" shall mean the Securities and Exchange Commission.

     "SIGNIFICANT DISPOSITION" shall mean a sale, lease, disposition or other
transfer by a Subsidiary Borrower, or any Subsidiary of a Subsidiary Borrower,
of assets constituting, either individually or in the aggregate with all other
assets sold, leased, disposed or otherwise transferred by such Subsidiary
Borrower or any Subsidiary thereof, 25% or more of the assets of such Subsidiary
Borrower and its Subsidiaries taken as a whole, excluding any such sale, lease,
disposition or other transfer to a wholly-owned Subsidiary of such Subsidiary
Borrower.

     "SIGNIFICANT SUBSIDIARY" shall mean at any time a Subsidiary of TXU that as
of such time satisfies the definition of a "significant subsidiary" contained as
of February 25, 2000, in Regulation S-X of the SEC; provided, that each of TXU
Electric, TXU Gas and any other Borrower hereunder shall at all times be
considered a Significant Subsidiary of TXU.

     "STANDBY BORROWING" shall mean a Borrowing consisting of simultaneous
Standby Loans from each of the Lenders.

     "STANDBY BORROWING REQUEST" shall mean a request made pursuant to Section
2.04 in the form of Exhibit A-5.
<PAGE>

                                                                              16


     "STANDBY LOANS" shall mean the revolving loans made pursuant to Section
2.04. Each Standby Loan shall be a Eurodollar Standby Loan or an ABR Loan.

     "STATUTORY RESERVES" shall mean a fraction (expressed as a decimal), the
numerator of which is the number one and the denominator of which is the number
one minus the aggregate (without duplication) of the maximum reserve percentages
(including any marginal, special, emergency or supplemental reserves) expressed
as a decimal established by the Board and any other banking authority to which
the Administrative Agent is subject for new negotiable nonpersonal time deposits
in dollars of over $100,000 with maturities approximately equal to three months.
Statutory Reserves shall be adjusted automatically on and as of the effective
date of any change in any reserve percentage.

     "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.

     "SUBSIDIARY BORROWER" shall mean each of TXU Electric and TXU Gas.

     "SUBSIDIARY BORROWER EARNINGS AVAILABLE FOR FIXED CHARGES" for any
twelve-month period for any Subsidiary Borrower shall mean (i) consolidated net
income, calculated after deducting preferred stock dividends and preferred
securities distributions of subsidiaries, but before any extraordinary items and
before the effect in such twelve-month period of any change in accounting
principles promulgated by the Financial Accounting Standards Board becoming
effective after December 31, 1999, 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 that such provisions, taken as a whole, decreased such
consolidated net income, plus (iv) Subsidiary Borrower Fixed Charges, all
determined for such twelve-month period with respect to such Subsidiary Borrower
and its Subsidiaries on a consolidated basis; provided, however, that in
computing Subsidiary Borrower Earnings Available for Fixed Charges for any
twelve-month period the following amounts shall be excluded: (A) the effect of
any regulatory disallowances resolving fuel or other issues in any proceeding
before the Commission or the Railroad Commission of Texas in an aggregate amount
not to exceed $100,000,000, (B) any non-cash book losses relating to the sale or
write-down of assets and (C) charges in respect of one-time costs incurred in
connection with mergers and acquisitions in an aggregate amount not to exceed
$10,000,000 (in the case of TXU Electric) or $5,000,000 (in the case of TXU Gas)
in any such twelve-month period.

     "SUBSIDIARY BORROWER FIXED CHARGES" for any twelve-month period for any
Subsidiary Borrower shall mean the sum (without duplication) of (i) interest on
mortgage bonds, (ii) interest on other long-term debt, (iii) other interest
expense, including interest on short-term debt and the current portion of
long-term debt, and (iv) preferred stock dividends and preferred securities
distributions of subsidiaries, all determined for such twelve-month period with
respect to such Subsidiary Borrower and its Subsidiaries on a consolidated
<PAGE>

                                                                              17


basis. For purposes of such calculation, long-term debt shall not include the
principal amount of, or interest in, Qualified Transition Bonds.

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

     "TOTAL COMMITMENT" shall mean, at any time, the aggregate amount of
Commitments of all the Lenders, as in effect at such time.

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

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

     "TXU ELECTRIC APPROVAL DATE" shall mean the first date on which the
following shall have occurred: TXU Electric shall have delivered to the
Administrative Agent (in sufficient copies for each of the Lenders) (i) a
certificate of the Secretary or Assistant Secretary of TXU Electric certifying
that (A) attached thereto are true and correct copies of all corporate
resolutions and all orders, consents and approvals required by any Governmental
Authority in order to permit or authorize TXU Electric to request, receive and
repay Extensions of Credit hereunder and "Loans" under and as defined in the
Facility A Credit Agreement in an aggregate principal amount at least equal to
the sum of the Total Commitment hereunder and the "Total Commitment" under and
as defined in the Facility A Credit Agreement and (B) that all such resolutions,
orders, consents and approvals are in full force and effect, sufficient for
their purpose and, in the case of such orders, consents and approvals, not
subject to any pending or, to the knowledge of such Secretary or Assistant
Secretary (as the case may be), threatened appeal or other proceeding seeking
reconsideration or review thereof and (ii) an opinion of counsel to TXU
Electric, in form and substance satisfactory to the Administrative Agent, as to
such orders, consents and approvals and as to the enforceability of the
obligations of TXU Electric hereunder on and after such date.

     "TXU ELECTRIC MORTGAGE" shall mean the Mortgage and Deed of Trust, dated as
of December 1, 1983, from TXU Electric to Irving Trust Company (now The Bank of
New York), Trustee, as amended or supplemented from time to time.

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

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

     "TXU MINING" shall mean TXU Mining Company, a Texas corporation, 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, the Alternate Base Rate and the Fixed Rate.
<PAGE>

                                                                              18


     "U.K. FACILITY AGREEMENT" shall mean the (pound)1.275 Billion Facilities
Agreement, dated March 24, 1999, among TXU Europe Limited (formerly known as TXU
Eastern Holdings Limited), TXU Finance (No. 2) Limited, TXU Acquisitions
Limited, the lenders parties thereto and certain other parties named therein, as
amended, modified or supplemented from time to time.

     "UTILIZATION PERIOD" shall mean any day or days during which the aggregate
amount of Outstanding Credits is greater than 33-1/3% of the Total Commitment
for such day or days.

     "VOTING SHARES" shall mean, as to shares of a particular corporation,
outstanding shares of stock of any class of such corporation entitled to vote in
the election of directors, excluding shares entitled so to vote only upon the
happening of some contingency.

     "WHOLLY OWNED SUBSIDIARY" shall mean any Consolidated Subsidiary 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 TXU.

     "WITHDRAWAL LIABILITY" shall mean liability of a 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 Borrowers' audited
financial statements referred to in Section 3.05.
<PAGE>

                                                                              19


                                   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 Standby Loans to each of the Borrowers and to purchase participations in
the reimbursement obligations of each of the Borrowers to the Fronting Bank, at
any time and from time to time until the earlier of the Maturity Date and the
termination of the Commitment of such Lender, in an aggregate principal amount
at any time outstanding not to exceed such Lender's Commitment, and the Fronting
Bank agrees to issue Letters of Credit for the account of each Borrower at any
time and from time to time until the fifth Business Day preceding the Maturity
Date in aggregate stated amounts at any time outstanding not to exceed the LC
Commitment Amount, subject, however, to the conditions that (i) at no time shall
the sum of (x) the outstanding aggregate principal amount of all Standby Loans
plus (y) the outstanding aggregate principal amount of all Competitive Loans
plus (z) LC Outstandings exceed the Total Commitment, (ii) at no time shall the
sum of (x) the outstanding aggregate principal amount of all Loans made to TXU
Gas plus (y) the outstanding aggregate principal amount of all "Loans" under and
as defined in the Facility A Credit Agreement made to TXU Gas plus (z) the
aggregate amount of LC Outstandings for the account of, or owing by, TXU Gas
exceed $650,000,000, (iii) unless and until the TXU Electric Approval Date shall
have occurred, at no time shall the sum of (x) the outstanding aggregate
principal amount of all Loans made to TXU Electric plus (y) the outstanding
aggregate principal amount of all "Loans" under and as defined in the Facility A
Credit Agreement made to TXU Electric plus (z) the aggregate amount of LC
Outstandings for the account of, or owing by, TXU Electric exceed
$1,250,000,000, (iv) at no time shall (x) the outstanding aggregate principal
amount of all Standby Loans made by any Lender plus (y) the amount by which the
Competitive Loans made to any Borrower and outstanding at such time shall be
deemed to have used the Commitment of such Lender pursuant to Section 2.15 plus
(z) such Lender's Percentage of the LC Outstandings exceed the amount of such
Lender's Commitment and (v) at all times, the outstanding aggregate principal
amount of all Standby Loans made by each Lender to each Borrower shall equal the
product of (A) the percentage which such Lender's Commitment represents of the
Total Commitment times (B) the outstanding aggregate principal amount of all
Standby Loans made to such Borrower.

     Within the foregoing limits, the Borrowers may borrow, pay or prepay and,
subject to the limitations set forth in Section 2.12(a), reborrow Standby Loans
hereunder, on and after the Restatement Date and prior to the Maturity Date,
subject to the terms, conditions and limitations set forth herein.

     SECTION 2.02. LOANS.

     (a) Each Standby 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
Standby 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
<PAGE>

                                                                              20


made by such other Lender). Each Competitive Loan shall be made in accordance
with the procedures set forth in Section 2.03. The Standby Loans or Competitive
Loans comprising any Borrowing shall be (i) in the case of Competitive Loans, in
an aggregate principal amount which is an integral multiple of $1,000,000 and
not less than $5,000,000 and (ii) in the case of Standby Loans, in an aggregate
principal amount which 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 Competitive Borrowing shall be comprised entirely of Eurodollar
Competitive Loans or Fixed Rate Loans, and each Standby Borrowing shall be
comprised entirely of Eurodollar Standby Loans or ABR Loans, as the Borrower may
request pursuant to Section 2.03 or 2.04, as applicable. 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 Administrative Agent in New York, New York,
not later than noon, New York City time, and the Administrative 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
applicable Borrower to the Administrative 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.
Competitive Loans shall be made by the Lender or Lenders whose Competitive Bids
therefor are accepted pursuant to Section 2.03 in the amounts so accepted.
Standby Loans shall be made by the Lenders pro rata in accordance with Section
2.15. Unless the Administrative Agent shall have received notice from a Lender
prior to the date of any Borrowing that such Lender will not make available to
the Administrative Agent such Lender's portion of such Borrowing, the
Administrative Agent may assume that such Lender has made such portion available
to the Administrative Agent on the date of such Borrowing in accordance with
this paragraph (c) and the Administrative 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 Administrative Agent, such Lender and such Borrower (without waiving any
claim against such Lender for such Lender's failure to make such portion
available) severally agree to repay to the Administrative 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 Administrative 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 Administrative Agent such corresponding amount, such
amount shall constitute such Lender's Loan as part of such Borrowing for
purposes of this Agreement.

     (d) A Borrower may refinance all or any part of any Standby Borrowing with
a Standby Borrowing of the same or a different Type, subject to the conditions
and limitations set forth in this Agreement. Any Standby Borrowing or part
thereof so refinanced shall be deemed to be repaid or prepaid in accordance with
<PAGE>

                                                                              21


Section 2.07 or 2.12, as applicable, with the proceeds of a new Standby
Borrowing, and the proceeds of the new Standby Borrowing, to the extent they do
not exceed the principal amount of the Standby Borrowing being refinanced, shall
not be paid by the Lenders to the Administrative Agent or by the Administrative
Agent to such Borrower pursuant to paragraph (c) above.

     SECTION 2.03. COMPETITIVE BID PROCEDURE.

     (a) In order to request Competitive Bids, a Borrower shall hand deliver or
telecopy to the CAF Agent a duly completed Competitive Bid Request in the form
of Exhibit A-1 hereto, to be received by the CAF Agent (i) in the case of a
Eurodollar Competitive Borrowing, not later than 11:00 a.m., New York City time,
four Business Days before a proposed Competitive Borrowing and (ii) in the case
of a Fixed Rate Borrowing, not later than 11:00 a.m., New York City time, one
Business Day before a proposed Competitive Borrowing. No ABR Loan shall be
requested in, or made pursuant to, a Competitive Bid Request. A Competitive Bid
Request that does not conform substantially to the format of Exhibit A-1 may be
rejected in the CAF Agent's sole discretion, and the CAF Agent shall promptly
notify the Borrower of such rejection by telecopy. Each Competitive Bid Request
shall refer to this Agreement and specify (w) whether the Borrowing then being
requested is to be a Eurodollar Borrowing or a Fixed Rate Borrowing, (x) the
date of such Borrowing (which shall be a Business Day) and the aggregate
principal amount thereof which shall be in a minimum principal amount of
$5,000,000 and in an integral multiple of $1,000,000, and (y) the Interest
Period with respect thereto (which may not end after the Maturity Date).
Promptly after its receipt of a Competitive Bid Request that is not rejected as
aforesaid, the CAF Agent shall telecopy to each Lender a Notice of Competitive
Bid Request in the form of Exhibit A-2 inviting the Lenders to bid, on the terms
and conditions of this Agreement, to make Competitive Loans.

     (b) Each Lender invited to bid may, in its sole discretion, make one or
more Competitive Bids to the Borrower responsive to such Borrower's Competitive
Bid Request. Each Competitive Bid by a Lender must be received by the CAF Agent
by telecopy, in the form of Exhibit A-3 hereto, (i) in the case of a Eurodollar
Competitive Borrowing, not later than 9:30 a.m., New York City time, three
Business Days before a proposed Competitive Borrowing and (ii) in the case of a
Fixed Rate Borrowing, not later than 9:30 a.m., New York City time, on the day
of a proposed Competitive Borrowing. Multiple bids will be accepted by the CAF
Agent. Competitive Bids that do not conform substantially to the format of
Exhibit A-3 may be rejected by the CAF Agent, and the CAF Agent shall notify the
Lender making such nonconforming bid of such rejection as soon as practicable.
Each Competitive Bid shall refer to this Agreement and specify (x) the principal
amount (which shall be in a minimum principal amount of $5,000,000 and in an
integral multiple of $1,000,000 and which may equal the entire principal amount
of the Competitive Borrowing requested by the applicable Borrower) of the
Competitive Loan or Loans that the Lender is willing to make to such Borrower,
(y) the Competitive Bid Rate or Rates at which the Lender is prepared to make
the Competitive Loan or Loans and (z) the Interest Period and the last day
thereof. If any Lender invited to bid shall elect not to make a Competitive Bid,
such Lender shall so notify the CAF Agent by telecopy (I) in the case of
Eurodollar Competitive Loans, not later than 9:30 a.m., New York City time,
three Business Days before a proposed Competitive Borrowing, and (II) in the
<PAGE>

                                                                              22


case of Fixed Rate Loans, not later than 9:30 a.m., New York City time, on the
day of a proposed Competitive Borrowing; provided, however, that failure by any
Lender to give such notice shall not cause such Lender to be obligated to make
any Competitive Loan as part of such Competitive Borrowing. A Competitive Bid
submitted by a Lender pursuant to this paragraph (b) shall be irrevocable.

     (c) The CAF Agent shall notify the Borrower by telecopy of all the
Competitive Bids made, the Competitive Bid Rate and the principal amount of each
Competitive Loan in respect of which such Competitive Bid was made and the
identity of the Lender that made each such bid by (i) in the case of a
Eurodollar Competitive Borrowing, not later than 10:00 a.m., New York City time,
three Business Days before a proposed Competitive Borrowing and (ii) in the case
of a Fixed Rate Borrowing, not later than 10:00 a.m., New York City time, on the
day of a proposed Competitive Borrowing. The CAF Agent shall send a copy of all
Competitive Bids to the Borrower for its records as soon as practicable after
the completion of the bidding process set forth in this Section 2.03.

     (d) A Borrower may in its sole and absolute discretion, subject only to the
provisions of this paragraph (d), accept or reject any or all Competitive Bids
referred to in paragraph (c) above. Such Borrower shall notify the CAF Agent by
telephone, confirmed by telecopy in the form of a Competitive Bid Accept/Reject
Letter, whether and to what extent it has decided to accept or reject any of or
all the bids referred to in paragraph (c) above by (i) in the case of a
Eurodollar Competitive Borrowing, not later than 10:30 a.m., New York City time,
three Business Days before a proposed Competitive Borrowing and (ii) in the case
of a Fixed Rate Borrowing, not later than 10:30 a.m., New York City time, on the
day of a proposed Competitive Borrowing; provided, however, that (i) the failure
by such Borrower to give such notice shall be deemed to be a rejection of all
the bids referred to in paragraph (c) above, (ii) such Borrower shall not accept
a bid made at a particular Competitive Bid Rate if it has decided to reject a
bid made at a lower Competitive Bid Rate, (iii) the aggregate amount of the
Competitive Bids accepted by such Borrower shall not exceed the principal amount
specified in the Competitive Bid Request, (iv) if such Borrower shall accept a
bid or bids made at a particular Competitive Bid Rate but the amount of such bid
or bids shall cause the total amount of bids to be accepted by such Borrower to
exceed the amount specified in the Competitive Bid Request, then such Borrower
shall accept a portion of such bid or bids in an amount equal to the amount
specified in the Competitive Bid Request less the amount of all other
Competitive Bids accepted with respect to such Competitive Bid Request, which
acceptance, in the case of multiple bids at such Competitive Bid Rate, shall be
made pro rata in accordance with the amount of each such bid at such Competitive
Bid Rate, and (v) except pursuant to clause (iv) above, no bid shall be accepted
for a Competitive Loan unless such Competitive Loan is in a minimum principal
amount of $5,000,000 and an integral multiple of $1,000,000; provided further,
however, that if a Competitive Loan must be in an amount less than $5,000,000
because of the provisions of clause (iv) above, such Competitive Loan may be for
a minimum of $1,000,000 or any integral multiple thereof, and in calculating the
pro rata allocation of acceptances of portions of multiple bids at a particular
Competitive Bid Rate pursuant to clause (iv) the amounts shall be rounded to
integral multiples of $1,000,000 in a manner which shall be in the discretion of
the applicable Borrower. A notice given by a Borrower pursuant to this paragraph
(d) shall be irrevocable.

     (e) The CAF Agent shall promptly notify each bidding Lender (and the
Administrative Agent), by telecopy, whether or not its Competitive Bid has been
accepted (and if so, in what amount and at what Competitive Bid Rate) and each
<PAGE>

                                                                              23


successful bidder will thereupon become bound, subject to the other applicable
conditions hereof, to make the Competitive Loan in respect of which its bid has
been accepted.

     (f) No Competitive Borrowing shall be requested or made hereunder if after
giving effect thereto any of the conditions set forth in clauses (i), (ii) and
(iii) of Section 2.01 would not be met.

     (g) If either the Administrative Agent or CAF Agent shall elect to submit a
Competitive Bid in its capacity as a Lender, such party shall submit such bid
directly to the Borrower one quarter of an hour earlier than the latest time at
which the other Lenders are required to submit their bids to the CAF Agent
pursuant to paragraph (b) above.

     (h) Each of the Borrowers and the CAF Agent shall deliver to the
Administrative Agent by telecopy copies of all notices delivered by it pursuant
to this Section 2.03 at the same times such notices are delivered hereunder. All
notices required by this Section 2.03 shall be given in accordance with Section
8.01.

     (i) A Competitive Bid Request shall not be made within five Business Days
after the date of any previous Competitive Bid which was accepted by a Borrower
pursuant to paragraph (d) above.

     SECTION 2.04. STANDBY BORROWING PROCEDURE.

     In order to request a Standby Borrowing, a Borrower shall hand deliver or
telecopy to the Administrative Agent a duly completed Standby Borrowing Request
in the form of Exhibit A-5 (a) in the case of a Eurodollar Standby Borrowing,
not later than 11:00 a.m., New York City time, three Business Days before such
Borrowing, and (b) in the case of an ABR Borrowing, not later than 11:00 a.m.,
New York City time, one Business Day before such Borrowing. No Fixed Rate Loan
shall be requested or made pursuant to a Standby Borrowing Request. Such notice
shall be irrevocable and shall in each case specify (i) whether the Borrowing
then being requested is to be a Eurodollar Standby Borrowing or an ABR
Borrowing; (ii) the date of such Standby Borrowing (which shall be a Business
Day) and the amount thereof; and (iii) if such Borrowing is to be a Eurodollar
Standby Borrowing, the Interest Period with respect thereto, which shall not end
after the Maturity Date. If no election as to the Type of Standby Borrowing is
specified in any such notice, then the requested Standby Borrowing shall be an
ABR Borrowing. If no Interest Period with respect to any Eurodollar Standby
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 a Borrower
shall not have given notice in accordance with this Section 2.04 of its election
to refinance a Standby Borrowing prior to the end of the Interest Period in
effect for such Borrowing, then such 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 Standby Borrowing shall be
requested if the Interest Period with respect thereto would end after the
Maturity Date. The Administrative Agent shall promptly advise the Lenders of any
notice given pursuant to this Section 2.04 and of each Lender's portion of the
requested Borrowing.
<PAGE>

                                                                              24


     SECTION 2.05. LETTERS OF CREDIT

     (a) Subject to the terms and conditions hereof, each Letter of Credit shall
be issued (or the stated maturity thereof extended or terms thereof modified or
amended) on not less than three Business Days' prior notice thereof by the
delivery by a Borrower of a Request for Issuance to the Administrative Agent
(which shall promptly distribute copies thereof to the Lenders) and the Fronting
Bank. Each Request for Issuance shall identify the Borrower for the account of
which the Letter of Credit is proposed to be issued and shall specify (i) the
date (which shall be a Business Day) of issuance of such Letter of Credit (or
the date of effectiveness of such extension, modification or amendment) and the
stated expiry date thereof (which shall be no later than the earlier of (A) the
first anniversary of its date of issuance and (B) the fifth Business Day
preceding the Maturity Date, provided, that any Letter of Credit with a one-year
term may provide for the renewal thereof for additional one-year periods (which
shall in no event extend beyond the date referred to in clause (B) above)), (ii)
the proposed stated amount (denominated in dollars) of such Letter of Credit
(which shall not be less than $5,000,000, unless otherwise agreed to by the
Fronting Bank), (iii) the name and address of the beneficiary of such Letter of
Credit and (iv) a statement of drawing conditions applicable to such Letter of
Credit, and if such Request for Issuance relates to an amendment or modification
of a Letter of Credit, it shall be accompanied by the consent of the beneficiary
of the Letter of Credit thereto. Each Request for Issuance shall be irrevocable
unless modified or rescinded by the Borrower that delivered such request not
less than two days prior to the proposed date of issuance (or effectiveness)
specified therein. Not later than 12:00 noon (New York City time) on the
proposed date of issuance (or effectiveness) specified in such Request for
Issuance, and upon fulfillment of the applicable conditions precedent and the
other requirements set forth herein, the Fronting Bank shall issue (or extend,
amend or modify) such Letter of Credit and provide notice and a copy thereof to
the Administrative Agent, which shall promptly furnish copies thereof to the
Lenders. The Fronting Bank shall not at any time be obligated to issue any
Letter of Credit if such issuance would conflict with any applicable requirement
of law.

     (b) No Letter of Credit shall be requested or issued hereunder if, after
the issuance thereof, (i) the Outstanding Credits would exceed the Total
Commitment; or (ii) the aggregate undrawn stated amounts of all Letters of
Credit outstanding would exceed the LC Commitment Amount. Furthermore, no Letter
of Credit shall be requested by, or issued to, (A) TXU Gas hereunder if, after
the issuance thereof, the sum of (1) the outstanding aggregate principal amount
of all Loans made to TXU Gas plus (2) the aggregate amount of LC Outstandings
for the account of, or owing by, TXU Gas plus (3) the outstanding aggregate
principal amount of all "Loans" under and as defined in the Facility A Credit
Agreement made to TXU Gas would exceed $650,000,000, or (B) TXU Electric
hereunder prior to the TXU Electric Approval Date if, after the issuance
thereof, the sum of (1) the outstanding aggregate principal amount of all Loans
made to TXU Electric plus (2) the aggregate amount of LC Outstandings for the
account of, or owing by, TXU Electric plus (3) the outstanding aggregate
principal amount of all "Loans" under and as defined in the Facility A Credit
Agreement made to TXU Electric would exceed $1,250,000,000.

     (c) Each of the Borrowers hereby agrees to pay to the Administrative Agent
for the account of the Fronting Bank and, if they shall have purchased
participations in the reimbursement obligations of such Borrower pursuant to
subsection (d) below, the Lenders, on demand made by the Fronting Bank to such
<PAGE>

                                                                              25


Borrower, on and after each date on which the Fronting Bank shall pay any amount
under any Letter of Credit issued by the Fronting Bank for the account of such
Borrower, a sum equal to the amount so paid plus interest on such amount from
the date so paid by the Fronting Bank until repayment to the Fronting Bank in
full at a fluctuating interest rate per annum equal to the Alternate Base Rate
plus the Applicable Margin for ABR Loans plus, if any amount paid by the
Fronting Bank under a Letter of Credit is not reimbursed by such Borrower within
three Business Days, 2%.

     (d) If the Fronting Bank shall not have been reimbursed in full by a
Borrower for any payment made by the Fronting Bank under a Letter of Credit
issued by the Fronting Bank for the account of such Borrower on the date of such
payment, the Fronting Bank shall give the Administrative Agent and each Lender
prompt notice thereof (an "LC PAYMENT NOTICE") no later than 12:00 noon (New
York City time) on the Business Day immediately succeeding the date of such
payment by the Fronting Bank. Notwithstanding any provision of this Agreement to
the contrary, each Lender severally agrees to purchase a participation in the
reimbursement obligation of the Borrower to the Fronting Bank by paying to the
Administrative Agent for the account of the Fronting Bank an amount equal to
such Lender's Percentage of such unreimbursed amount paid by the Fronting Bank,
plus interest on such amount at a rate per annum equal to the Federal Funds
Effective Rate from the date of the payment by the Fronting Bank to the date of
payment to the Fronting Bank by such Lender. Each such payment by a Lender shall
be made not later than 3:00 p.m. (New York City time) on the later to occur of
(i) the Business Day immediately following the date of such payment by the
Fronting Bank and (ii) the Business Day on which the Lender shall have received
an LC Payment Notice from the Fronting Bank. Each Lender's obligation to make
each such payment to the Administrative Agent for the account of the Fronting
Bank shall be several and shall not be affected by the occurrence or continuance
of a Default or Event of Default or the failure of any other Lender to make any
payment under this Section 2.05(d). Each Lender further agrees that each such
payment shall be made without any offset, abatement, withholding or reduction
whatsoever.

     (e) The failure of any Lender to make any payment to the Administrative
Agent for the account of the Fronting Bank in accordance with subsection (d)
above, shall not relieve any other Lender of its obligation to make payment, but
no Lender shall be responsible for the failure of any other Lender. If any
Lender (a "NON-PERFORMING LENDER") shall fail to make any payment to the
Administrative Agent for the account of the Fronting Bank in accordance with
subsection (d) above within five Business Days after the LC Payment Notice
relating thereto, then, for so long as such failure shall continue, the Fronting
Bank shall be deemed, for purposes of Section 2.16 and Article VI hereof, to be
a Lender hereunder owed a Loan in an amount equal to the outstanding principal
amount due and payable by such non-performing Lender to the Administrative Agent
for the account of the Fronting Bank pursuant to subsection (d) above. Any
non-performing Lender and the Borrower for the account of which the relevant
Letter of Credit was issued (without waiving any claim against such Lender for
such Lender's failure to purchase a participation in the reimbursement
obligations of such Borrower under subsection (d) above) severally agree to pay
to the Administrative Agent for the account of the Fronting Bank forthwith on
demand such amount, together with interest thereon for each day from the date
the Lender would have purchased its participation had it complied with the
requirements of subsection (d) above until the date such amount is paid to the
Administrative Agent at (i) in the case of such Borrower, the interest rate
<PAGE>

                                                                              26


applicable at the time to ABR Loans (or the interest rate that would be
applicable if ABR Loans were outstanding) and (ii) in the case of such Lender,
the Federal Funds Effective Rate.

     (f) The payment obligations of each Lender under Section 2.05(d) and of
each Borrower under this Agreement in respect of any payment under any Letter of
Credit shall be unconditional and irrevocable, and shall be paid strictly in
accordance with the terms of this Agreement under all circumstances, including,
without limitation, the following circumstances:

          (i)   any lack of validity or enforceability of this Agreement or any
     other agreement or instrument relating hereto or to such Letter of Credit;

          (ii)  any amendment or waiver of, or any consent to departure from,
     the terms of this Agreement or such Letter of Credit;

          (iii) the existence of any claim, set-off, defense or other right
     which the Borrower for the account of which such Letter of Credit was
     issued may have at any time against any beneficiary, or any transferee, of
     such Letter of Credit (or any persons for whom any such beneficiary or any
     such transferee may be acting), the Fronting Bank, or any other person,
     whether in connection with this Agreement, the transactions contemplated
     hereby or by such Letter of Credit, or any unrelated transaction;

          (iv)  any statement or any other document presented under such Letter
     of Credit proving to be forged, fraudulent, invalid or insufficient in any
     respect or any statement therein being untrue or inaccurate in any respect;

          (v)   payment in good faith by the Fronting Bank under the Letter of
     Credit issued by the Fronting Bank against presentation of a draft or
     certificate which does not comply with the terms of such Letter of Credit;
     or

          (vi)  any other circumstance or happening whatsoever, whether or not
     similar to any of the foregoing.

     (g)  Each Borrower assumes all risks of the acts and omissions of any
beneficiary or transferee of any Letter of Credit issued for the account of such
Borrower. Neither the Fronting Bank, the Lenders nor any of their respective
officers, directors, employees, agents or Affiliates shall be liable or
responsible for (i) the use that may be made of such Letter of Credit or any
acts or omissions of any beneficiary or transferee thereof in connection
therewith; (ii) the validity, sufficiency or genuineness of documents, or of any
endorsement thereon, even if such documents should prove to be in any or all
respects invalid, insufficient, fraudulent or forged; (iii) payment by the
Fronting Bank against presentation of documents that do not comply with the
terms of such Letter of Credit, including failure of any documents to bear any
reference or adequate reference to such Letter of Credit; or (iv) any other
circumstances whatsoever in making or failing to make payment under such Letter
of Credit, except that the Borrower for the account of which such Letter of
Credit was issued and each Lender shall have the right to bring suit against the
Fronting Bank, and the Fronting Bank shall be liable to such Borrower and any
Lender, to the extent of any direct, as opposed to consequential, damages
suffered by such Borrower or such Lender which such Borrower or such Lender
<PAGE>

                                                                              27


proves were caused by the Fronting Bank's wilful misconduct or gross negligence,
including, in the case of such Borrower, the Fronting Bank's wilful failure to
make timely payment under such Letter of Credit following the presentation to it
by the beneficiary thereof of a draft and accompanying certificate(s) which
strictly comply with the terms and conditions of such Letter of Credit. In
furtherance and not in limitation of the foregoing, the Fronting Bank may accept
sight drafts and accompanying certificates presented under any Letter of Credit
issued by the Fronting Bank that appear on their face to be in order, without
responsibility for further investigation, regardless of any notice or
information to the contrary, and payment against such documents shall not
constitute wilful misconduct or gross negligence by the Fronting Bank.
Notwithstanding the foregoing, no Lender shall be obligated to indemnify any
Borrower for damages caused by the Fronting Bank's wilful misconduct or gross
negligence.

     SECTION 2.06. FEES.

     (a) The Borrowers agree jointly and severally to pay to each Lender,
through the Administrative Agent, on each March 31, June 30, September 30 and
December 31 (with the first payment being due on March 31, 2000) and on each
date on which the Commitment of such Lender shall be terminated or reduced as
provided herein, a facility fee (a "FACILITY FEE"), at a rate per annum equal to
the Facility Fee Percentage from time to time in effect on the amount of the sum
of the unused Commitment of such Lender plus the principal amount of outstanding
Extensions of Credit made by such Lender (without regard, in either case, to any
Competitive Loans made by any Lender), during the preceding quarter (or other
period commencing on the Restatement Date or ending on the Maturity Date or any
date on which the Commitment of such Lender shall be terminated). All Facility
Fees shall be computed on the basis of the actual number of days elapsed in a
year of 360 days. The Facility Fee due to each Lender shall commence to accrue
on the Restatement Date, and shall cease to accrue on the date of termination of
the Commitment of such Lender as provided herein.

     (b) Each Borrower agrees jointly and severally to pay the Administrative
Agent, for its own account, the administrative fees provided for in the Letter
Agreement (the "ADMINISTRATIVE FEES").

     (c) Each Borrower agrees to pay the CAF Agent, for its own account, the
Auction Fees applicable to such Borrower.

     (d) Each Borrower for the account of which a Letter of Credit is issued
agrees to pay the Administrative Agent for the account of the Fronting Bank a
fronting fee (a "FRONTING FEE") and such other charges with respect to such
Letter of Credit as are set forth in the Fee Letter or otherwise agreed upon
with the Fronting Bank, and agrees to pay to the Administrative Agent for the
account of the Lenders a fee (the "LC FEE") on the face amount of each Letter of
Credit issued by the Fronting Bank for the account of such Borrower calculated
at a rate per annum equal to the Applicable Margin for Eurodollar Standby Loans,
computed on the basis of the actual number of days that each such Letter of
Credit is outstanding, assuming a year of 360 days, payable in arrears on each
March 31, June 30, September 30 and December 31, and on the date that such
Letter of Credit expires or is drawn in full.
<PAGE>

                                                                              28


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

     SECTION 2.07. REPAYMENT OF OUTSTANDING CREDITS; EVIDENCE OF INDEBTEDNESS.

     (a) The principal balance of each Outstanding Credit 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 Extension of Credit 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 Administrative Agent shall maintain accounts in which it will
record (i) the amount of each Extension of Credit 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 each
Borrower to each Lender hereunder and (iii) the amount of any sum received by
the Administrative Agent hereunder from each Borrower and each Lender's share
thereof.

     (d) The entries made in the accounts maintained pursuant to paragraphs (b)
and (c) of this Section 2.07 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
Administrative Agent to maintain such accounts or any error therein shall not in
any manner affect the obligations of the Borrowers to repay the Outstanding
Credits in accordance with their terms.

     SECTION 2.08. INTEREST ON LOANS.

     (a) Subject to the provisions of Section 2.09, 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 and in the case of each Eurodollar
Competitive Loan, the LIBO Rate for the Interest Period in effect for such
Borrowing plus the Competitive Bid Margin offered by the Lender making such Loan
and accepted by the applicable Borrower pursuant to Section 2.03.

     (b) Subject to the provisions of Section 2.09, 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) Subject to the provisions of Section 2.09, each Fixed Rate Loan shall
bear interest at a rate per annum (computed on the basis of the actual number of
days elapsed over a year of 360 days) equal to the fixed rate of interest
<PAGE>

                                                                              29


offered by the Lender making such Loan and accepted by the Borrower pursuant to
Section 2.03.

     (d) 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 Chase, and
such determination shall be conclusive absent manifest error; provided that
Chase shall, upon request, provide to the applicable Borrower a certificate
setting forth in reasonable detail the basis for such determination.

     SECTION 2.09. DEFAULT INTEREST.

     If a Borrower shall default in the payment of the principal of or interest
on any Loan or any other amount becoming due hereunder (except for reimbursement
obligations in respect of Letters of Credit that have been refunded with Loans),
whether by scheduled maturity, notice of prepayment, acceleration or otherwise,
such Borrower shall on demand from time to time from the Administrative Agent
pay interest, to the extent permitted by law, on such defaulted amount up to
(but not including) the date of actual payment (after as well as before
judgment) at a rate per annum (computed as provided in Section 2.08(b)) equal to
the Alternate Base Rate plus the Applicable Margin for ABR Loans plus 1%.

     SECTION 2.10. 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
Administrative 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 Administrative Agent shall, as
soon as practicable thereafter, give telecopy notice of such determination to
the Borrowers and the Lenders. In the event of any such determination under
clause (i) or (ii) above, until the Administrative Agent shall have advised the
Borrowers and the Lenders that the circumstances giving rise to such notice no
longer exist, (x) any request by a Borrower for a Eurodollar Competitive
Borrowing pursuant to Section 2.03 shall be of no force and effect and shall be
denied by the Administrative Agent and (y) any request by a Borrower for a
Eurodollar Standby Borrowing pursuant to Section 2.04 shall be deemed to be a
request for an ABR Borrowing. In the event the Required Lenders notify the
Administrative 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 Administrative
Agent shall notify the applicable Borrower of such notice and until the Required
Lenders shall have advised the Administrative Agent that the circumstances
giving rise to such notice no longer exist, any request by such Borrower for a
Eurodollar Standby Borrowing shall be deemed a request for an ABR Borrowing.
Each determination by the Administrative Agent hereunder shall be made in good
faith and shall be conclusive absent manifest error; provided that the
Administrative Agent, shall, upon request, provide to the applicable Borrower a
certificate setting forth in reasonable detail the basis for such determination.
<PAGE>

                                                                              30


     SECTION 2.11. TERMINATION AND REDUCTION OF COMMITMENTS.

     (a) The Commitments shall be automatically terminated on the Maturity Date
and shall be automatically reduced on the date of any Significant Disposition by
such amount as may be required to give effect to any Adjusted Commitment
pursuant to Section 5.09(b).

     (b) Upon at least two Business Days' prior irrevocable written notice to
the Administrative Agent, the Borrowers, acting jointly, 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 Credits on the date of such
termination or reduction (after giving effect to any prepayment made pursuant to
Section 2.12) 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 Administrative Agent shall advise the Lenders of any notice given
pursuant to this Section 2.11(b) and of each Lender's portion of any such
termination or reduction of the Total Commitment.

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

     SECTION 2.12. PREPAYMENT.

     (a) Each Borrower shall have the right at any time and from time to time to
prepay any Standby Borrowing, in whole or in part, upon giving telecopy notice
(or telephone notice promptly confirmed by telecopy) to the Administrative
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. No prepayment
may be made in respect of any Competitive Borrowing.

     (b) On the date of any termination or reduction of the Commitments pursuant
to Section 2.11, the Borrowers shall pay or prepay so much of the Standby
Borrowings and/or deposit funds in the Cash Collateral Account in respect of
undrawn Letters of Credit outstanding on such date as shall be necessary in
order that the Outstanding Credits will not exceed the Total Commitment, after
giving effect to such termination or reduction.

     (c) 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. All
prepayments under this Section 2.12 shall be subject to Section 8.05 but
otherwise without premium or penalty. All prepayments under this Section 2.12
<PAGE>

                                                                              31


shall be accompanied by accrued interest on the principal amount being prepaid
to the date of payment.

     SECTION 2.13. 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 or the
Fronting Bank hereunder (except for changes in respect of taxes on the overall
net income of such Lender or the Fronting Bank (as the case may be) or its
lending office imposed by the jurisdiction in which such Lender's or the
Fronting Bank's (as the case may be) 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 the Fronting Bank, or shall result in the imposition on any Lender, the
Fronting Bank or the London interbank market of any other condition affecting
this Agreement, such Lender's Commitment or any Extension of Credit (other than
an ABR Loan) made by such Lender or the Fronting Bank, and the result of any of
the foregoing shall be to increase the cost to such Lender or the Fronting Bank
(as the case may be) of making or maintaining any Extension of Credit (other
than an ABR Loan) or to reduce the amount of any sum received or receivable by
such Lender or the Fronting Bank (as the case may be) hereunder (whether of
principal, interest or otherwise) by an amount deemed by such Lender or the
Fronting Bank (as the case may be) to be material, then the applicable Borrower
or, if the foregoing circumstances do not relate to a particular Extension of
Credit, the Borrowers shall, upon receipt of the notice and certificate provided
for in Section 2.13(c), promptly pay to such Lender or the Fronting Bank (as the
case may be) such additional amount or amounts as will compensate such Lender or
the Fronting Bank (as the case may be) for such additional costs incurred or
reduction suffered. Notwithstanding the foregoing, no Lender shall be entitled
to request compensation under this paragraph with respect to any Competitive
Loan if the change giving rise to such request was applicable to such Lender at
the time of submission of the Competitive Bid pursuant to which such Competitive
Loan was made.

     (b) If any Lender or the Fronting Bank 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 the
Fronting Bank (or any lending office of such Lender or the Fronting Bank) or any
Lender's or the Fronting Bank'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 or the Fronting Bank's (as the case
may be) capital or on the capital of such Lender's or the Fronting Bank's (as
the case may be) holding company, if any, as a consequence of this Agreement,
such Lender's Commitment or the Extensions of Credit made by such Lender or the
Fronting Bank (as the case may be) pursuant hereto to a level below that which
<PAGE>

                                                                              32


such Lender or the Fronting Bank (as the case may be) or such Lender's or the
Fronting Bank's (as the case may be) holding company could have achieved but for
such adoption, change or compliance (taking into consideration such Lender's or
the Fronting Bank's (as the case may be) policies and the policies of such
Lender's or the Fronting Bank's (as the case may be) holding company with
respect to capital adequacy) by an amount deemed by such Lender or the Fronting
Bank (as the case may be) to be material, then from time to time such additional
amount or amounts as will compensate such Lender or the Fronting Bank (as the
case may be) for any such reduction suffered will be paid by the Borrowers to
such Lender or the Fronting Bank (as the case may be). It is acknowledged that
this Agreement is being entered into by the Lenders and the Fronting Bank on the
understanding that neither the Lenders nor the Fronting Bank will be required to
maintain capital against their Commitments or agreement to issue Letters of
Credit, as the case may be, under currently applicable laws, regulations and
regulatory guidelines. In the event the Lenders or the Fronting Bank shall
otherwise determine that such understanding is incorrect, it is agreed that the
Lenders or the Fronting Bank, as the case may be, 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 or the Fronting Bank setting forth such
amount or amounts as shall be necessary to compensate such Lender or the
Fronting Bank (as the case may be) 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 applicable Borrower or the Borrowers, as
the case may be, and shall be conclusive absent manifest error. The Borrowers
shall pay each Lender or the Fronting Bank (as the case may be) the amount shown
as due on any such certificate delivered by it within 10 days after its receipt
of the same. Each Lender and the Fronting Bank shall give prompt notice to the
applicable Borrower of any event of which it has knowledge, occurring after the
date hereof, that it has determined will require compensation by such Borrower
pursuant to this Section; provided, however, that failure by such Lender or the
Fronting Bank to give such notice shall not constitute a waiver of such Lender's
or the Fronting Bank's (as the case may be) right to demand compensation
hereunder.

     (d) Failure on the part of any Lender or the Fronting Bank 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 or the Fronting Bank's (as the case may
be) right to demand compensation with respect to such period or any other
period; provided, however, that neither any Lender nor the Fronting Bank shall
be entitled to compensation under this Section 2.13 for any costs incurred or
reductions suffered with respect to any date unless it shall have notified the
applicable 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 and the Fronting Bank 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.

     (e) Each Lender and the Fronting Bank 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
<PAGE>

                                                                              33


such Lender or the Fronting Bank (as the case may be), be disadvantageous to
such Lender or the Fronting Bank (as the case may be).

     SECTION 2.14. 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 Borrowers and to the Agents, such Lender may:

          (i) declare that Eurodollar Loans will not thereafter be made by such
     Lender hereunder, whereupon such Lender shall not submit a Competitive Bid
     in response to a request for Eurodollar Competitive Loans and any request
     for a Eurodollar Standby 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 2.14, 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 2.15. PRO RATA TREATMENT.

     Except as provided below in this Section 2.15 with respect to Competitive
Borrowings and as required under Sections 2.14 and 2.19, each Standby Borrowing,
each payment or prepayment of principal of any Standby Borrowing, each payment
of interest on the Standby Loans, each payment of the Facility Fees, each
reduction of the Commitments and each refinancing or conversion of any Borrowing
with a Standby 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 Standby Loans). Each payment of principal
of any Competitive Borrowing shall be allocated pro rata among the Lenders
participating in such Borrowing in accordance with the respective principal
amounts of their outstanding Competitive Loans comprising such Borrowing. Each
payment of interest on any Competitive Borrowing shall be allocated pro rata
<PAGE>

                                                                              34


among the Lenders participating in such Borrowing in accordance with the
respective amounts of accrued and unpaid interest on their outstanding
Competitive Loans comprising such Borrowing. For purposes of determining the
available Commitments of the Lenders at any time, each outstanding Competitive
Borrowing shall be deemed to have utilized the Commitments of the Lenders
(including those Lenders which shall not have made Loans as part of such
Competitive Borrowing) pro rata in accordance with such respective Commitments,
and the LC Outstandings shall be deemed to have utilized the Commitments of the
Lenders pro rata in accordance with their respective Commitments. Each Lender
agrees that in computing such Lender's portion of any Borrowing to be made
hereunder, the Administrative Agent may, in its discretion, round each Lender's
percentage of such Borrowing to the next higher or lower whole dollar amount.

     SECTION 2.16. 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 Standby Loans or LC Outstandings as a result of which the unpaid
principal portion of its Standby Loans and LC Outstandings shall be
proportionately less than the unpaid principal portion of the Standby Loans and
LC Outstandings 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 Standby Loans or LC
Outstandings of such other Lender, so that the aggregate unpaid principal amount
of the Standby Loans and LC Outstandings and participations in the Standby Loans
and LC Outstandings held by each Lender shall be in the same proportion to the
aggregate unpaid principal amount of all Standby Loans and LC Outstandings then
outstanding as the principal amount of its Standby Loans and LC Outstandings
prior to such exercise of banker's lien, setoff or counterclaim or other event
was to the principal amount of all Standby Loans and LC Outstandings 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 2.16 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. Each Borrower expressly consents to the
foregoing arrangements and agrees that any Lender holding a participation in a
Standby Loan or LC Outstandings 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 such Borrower to such Lender by reason thereof as fully
as if such Lender had made an Extension of Credit in the amount of such
participation.

     SECTION 2.17. PAYMENTS.

     (a) Each Borrower shall make each payment (including principal of or
interest on any Extension of Credit 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 Administrative Agent at its offices at
One Chase Manhattan Plaza, 8th Floor, New York, New York 10081, Attention: Loan
<PAGE>

                                                                              35


and Agency Services Group, in immediately available funds. Each such payment
shall be made without off-set, deduction or counterclaim, provided, that the
foregoing shall not constitute a relinquishment or waiver of such Borrower's
rights to any independent claim that such Borrower may have against either
Agent, the Fronting Bank or any Lender.

     (b) Whenever any payment (including principal of or interest on any
Extension of Credit 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 2.18. TAXES.

     (a) Any and all payments of principal and interest on any of the
Outstanding Credits, or of any Fees or indemnity or expense reimbursements by a
Borrower hereunder ("BORROWER PAYMENTS") shall be made, in accordance with
Section 2.17, free and clear of and without deduction for any and all current or
future United States Federal, state and local taxes, levies, imposts,
deductions, charges or withholdings, and all liabilities with respect to such
Borrower Payments, but only to the extent reasonably attributable to such
Borrower Payments, excluding (i) income taxes imposed on the net income of the
Administrative Agent, the CAF Agent, the Fronting Bank 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 Administrative Agent, the CAF Agent, the Fronting Bank or any Lender (or
Transferee), in each case by the jurisdiction under the laws of which the
Administrative Agent, the CAF Agent, the Fronting Bank 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 any 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 Agents or the Fronting Bank, (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 sums
payable under this Section 2.18) such Lender (or Transferee) or Agent or the
Fronting Bank (as the case may be) shall receive an amount equal to the sum it
would have received had no such deductions been made, (ii) such Borrower shall
make such deductions and (iii) such Borrower shall pay the full amount deducted
to the relevant Governmental Authority in accordance with applicable law.

     (b) In addition, each 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 Agreement ("OTHER TAXES").

     (c) Each Borrower shall indemnify each Lender (or Transferee thereof), each
Agent and the Fronting Bank 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
<PAGE>

                                                                              36


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, the CAF Agent, the Fronting Bank, or the Administrative 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 any Agent or the Fronting Bank, as the case may be,
makes written demand therefor.

     (d) If a Lender (or Transferee) or any Agent or the Fronting Bank 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 a Borrower, or with respect to which a Borrower has paid
additional amounts, pursuant to this Section 2.18, it shall promptly notify such
Borrower of the availability of such refund claim and shall, within 30 days
after receipt of a request by such Borrower, make a claim to such United States
Governmental Authority for such refund at such Borrower's expense. If a Lender
(or Transferee) or any Agent or the Fronting Bank 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 a
Borrower or with respect to which a Borrower had paid additional amounts
pursuant to this Section 2.18, it shall within 30 days from the date of such
receipt pay over such refund to such Borrower (but only to the extent of
indemnity payments made, or additional amounts paid, by such Borrower under this
Section 2.18 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
such Agent or the Fronting Bank and without interest (other than interest paid
by the relevant United States Governmental Authority with respect to such
refund); provided, however, that such Borrower, upon the request of such Lender
(or Transferee) or such Agent or the Fronting Bank, agrees to repay the amount
paid over to such Borrower (plus penalties, interest or other charges) to such
Lender (or Transferee) or such Agent or the Fronting Bank in the event such
Lender (or Transferee) or such Agent or the Fronting Bank 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 a Borrower to the relevant United
States Governmental Authority, such Borrower will deliver to the Administrative
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 2.18 shall
survive the payment in full of the principal of and interest on all Extensions
of Credit made hereunder.

     (g) Each of the Agents, the Fronting Bank 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 Borrowers and the Administrative
Agent two copies of either United States Internal Revenue Service Form 1001 or
Form 4224, properly completed and duly executed by such Non-U.S. Lender claiming
<PAGE>

                                                                              37


complete exemption from, or reduced rate of, United States Federal withholding
tax on payments by any 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 2.18(g), a
Non-U.S. Lender shall not be required to deliver any form pursuant to this
Section 2.18(g) that such Non-U.S. Lender is not legally able to deliver.

     (h) A 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 Office with
respect to an Extension of Credit; 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 such Borrower; and provided further, however,
that this clause (i) shall not apply to the extent the indemnity payment or
additional amounts any Transferee, or the Fronting Bank 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 the Fronting Bank 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 of the Fronting Bank or any Lender (or Transferee) claiming any
indemnity payment or additional amounts payable pursuant to this Section 2.18
shall use reasonable efforts (consistent with legal and regulatory restrictions)
to file any certificate or document reasonably requested in writing by a
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 the Fronting Bank or such
Lender (or Transferee) (as the case may be), be otherwise disadvantageous to the
Fronting Bank or such Lender (or Transferee) (as the case may be).

     (j) Nothing contained in this Section 2.18 shall require any Lender (or
Transferee) or any Agent or the Fronting Bank to make available to such Borrower
any of its tax returns (or any other information) that it deems to be
confidential or proprietary.
<PAGE>

                                                                              38


     (k) Notwithstanding anything herein to the contrary, the indemnification
obligations under this Section shall, to the extent practicable, be allocated
between the Borrowers based upon their relative liability for the interest, fee
or other payments in respect of which such indemnification obligations arise.

     SECTION 2.19. ASSIGNMENT OF COMMITMENTS UNDER CERTAIN CIRCUMSTANCES.

     In the event that any Lender or the Fronting Bank shall have delivered a
notice or certificate pursuant to Section 2.13 or 2.14, or any Borrower shall be
required to make additional payments to any Lender or the Fronting Bank under
Section 2.18, the Borrowers shall have the right, at their own expense, upon
notice to such Lender or the Fronting Bank (as the case may be) and the Agents,
to require such Lender or the Fronting Bank (as the case may be) to transfer and
assign without recourse (in accordance with and subject to the restrictions
contained in Section 8.04) all such Lender's or the Fronting Bank's (as the case
may be) interests, rights and obligations contained hereunder to another
financial institution approved by the Agents and the Borrowers (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 or the Fronting Bank (as the case may be) in
immediately available funds on the date of such assignment the principal of and
interest accrued to the date of payment on the Extensions of Credit made by it
hereunder and all other amounts accrued for its account or owed to it hereunder
and the Borrowers shall pay the processing and recordation fee due pursuant to
Section 8.04.

                                   ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

     Each Borrower represents and warrants to each of the Lenders and the
Fronting Bank as follows (except in the case of the representations contained
(i) in Sections 3.05(a) and 3.12, which are made by TXU only, (ii) in Section
3.05(b), which are made by TXU Electric only, and (iii) in Section 3.05(c),
which are made by TXU Gas only:

     SECTION 3.01. ORGANIZATION; POWERS.

     Such Borrower (a) is a corporation duly organized, validly existing and in
good standing under the laws of the jurisdiction of its organization, (b) 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, (c) 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 (d) has the corporate power and authority to execute, deliver and
perform its obligations under this Agreement and to request and receive
Extensions of Credit hereunder.

     SECTION 3.02. AUTHORIZATION.

     The execution, delivery and performance by such Borrower of this Agreement
and the Extensions of Credit hereunder (a) have been duly authorized by all
requisite corporate action and (b) will not (i) violate (A) any provision of any
law, statute, rule or regulation (including, without limitation, the Margin
<PAGE>

                                                                              39


Regulations) or of the certificate of incorporation or other constitutive
documents or by-laws of such Borrower or any of its Subsidiaries to which such
Borrower is subject, (B) any order of any Governmental Authority or (C) any
provision of any indenture, agreement or other instrument to which such Borrower
or any of its Subsidiaries is a party or by which it or any of its property is
or may be bound, (ii) 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 (iii) result in the creation or
imposition of any Lien upon any property or assets of such Borrower.

     SECTION 3.03. ENFORCEABILITY.

     This Agreement constitutes a legal, valid and binding obligation of such
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 such 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 such Borrower, threatened appeal or other proceeding seeking
reconsideration or review thereof.

     SECTION 3.05. FINANCIAL STATEMENTS.

     (a) The consolidated balance sheet of TXU and its Consolidated Subsidiaries
as of December 31, 1998 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 TXU's 1998 Annual Report on Form 10-K,
copies of which have been delivered to each of the Lenders, fairly present, in
conformity with GAAP, the consolidated financial position of TXU and its
Consolidated Subsidiaries as of such date and their consolidated results of
operations and cash flows for such period ending on such date. The unaudited
consolidated balance sheets of TXU and its Consolidated Subsidiaries as of March
31, 1999, June 30, 1999 and September 30, 1999 and the related consolidated
statements of income and cash flows for each of the three-month periods ending
on such dates, certified by a Responsible Officer of TXU, copies of which have
been delivered to each of the Lenders, fairly present (subject to year-end
adjustments), in conformity with GAAP, the consolidated financial position of
TXU and its Consolidated Subsidiaries as of such dates and their consolidated
results of operations and cash flows for the periods ending on such dates.

     (b) The consolidated balance sheet of TXU Electric and its Consolidated
Subsidiaries as of December 31, 1998 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 TXU Electric's 1998 Annual
Report on Form 10-K, copies of which have been delivered to each of the Lenders,
fairly present, in conformity with GAAP, the consolidated financial position of
TXU Electric and its Consolidated Subsidiaries as of such dates and their
<PAGE>

                                                                              40


consolidated results of operations and cash flows for the period ending on such
date. The unaudited consolidated balance sheets of TXU Electric and its
Consolidated Subsidiaries as of March 31, 1999, June 30, 1999 and September 30,
1999 and the related consolidated statements of income and cash flows for each
of the three-month periods ending on such dates, certified by a Responsible
Officer of TXU Electric, copies of which have been delivered to each of the
Lenders, fairly present (subject to year-end adjustments), in conformity with
GAAP, the consolidated financial position of TXU Electric and its Consolidated
Subsidiaries as of such dates and their consolidated results of operations and
cash flows for the periods ending on such dates.

     (c) The consolidated balance sheet of TXU Gas and its Consolidated
Subsidiaries as of December 31, 1998 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 TXU Gas's 1998 Annual
Report on Form 10-K, copies of which have been delivered to each of the Lenders,
fairly present, in conformity with GAAP, the consolidated financial position of
TXU Gas and its Consolidated Subsidiaries as of such dates and their
consolidated results of operations and cash flows for the period ending on such
date. The unaudited consolidated balance sheets of TXU Gas and its Consolidated
Subsidiaries as of March 31, 1999, June 30, 1999 and September 30, 1999 and the
related consolidated statements of income and cash flows for the three-month
periods ending on such dates, certified by a Responsible Officer of TXU Gas,
copies of which have been delivered to each of the Lenders, fairly present
(subject to year-end adjustments), in conformity with GAAP, the consolidated
financial position of TXU Gas and its Consolidated Subsidiaries as of such dates
and their consolidated results of operations and cash flows for the periods
ending on such dates.

     (d) Except as set forth in the financial statements or other reports of the
type referred to in Section 5.03 hereof and which have been delivered to the
Lenders on or prior to the date hereof, since December 31, 1998, there has been
no Material Adverse Change with respect to such Borrower, 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.

     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 which have been delivered to the
Lenders on or prior to the date hereof, there is no action, suit or proceeding
pending against, or to the knowledge of such Borrower threatened against or
affecting, TXU 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 which could materially adversely affect the ability of
such Borrower to pay its obligations hereunder or which in any manner draws into
question the validity of this Agreement.

     SECTION 3.07. FEDERAL RESERVE REGULATIONS.

     (a) Neither such 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.
<PAGE>

                                                                              41


     (b) No part of the proceeds of any Extension of Credit will be used by such
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 any Borrower subject to
the restrictions of Sections 5.09 and 5.10 are represented by Margin Stock.

     SECTION 3.08. INVESTMENT COMPANY ACT; PUBLIC UTILITY HOLDING COMPANY ACT.

     (a) Neither such 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) Such 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 Borrowers of this Agreement and their respective obligations hereunder do
not violate any provision of such Act or any rule or regulation thereunder.

     SECTION 3.09. NO MATERIAL MISSTATEMENTS.

     No report, financial statement or other written information furnished by or
on behalf of such Borrower to the Agents 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.

     Such 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 which 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 such 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 such Borrower nor any ERISA Affiliate has incurred any Withdrawal
Liability that could result in a Material Adverse Change. Neither such 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
<PAGE>

                                                                              42


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 TXU's corporate Significant Subsidiaries is a corporation duly
incorporated, validly existing and in good standing under the laws of its
jurisdiction of incorporation and has all corporate powers necessary to carry on
its business substantially as now conducted. TXU's corporate Significant
Subsidiaries have all material governmental licenses, authorizations, consents
and approvals required to carry on the business of the corporate Significant
Subsidiaries 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 which have been
delivered to the Lenders on or prior to the date hereof, such Borrower and each
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
such 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 such 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, such 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. YEAR 2000 COMPLIANCE.

     All material computer-based systems and software of such Borrower and its
Subsidiaries have been able to and will continue to record, store, process and
present calendar dates falling on or after January 1, 2000, in the same manner
and with the same functionality, in all material respects, as such
computer-based systems and software record, store, process and present calendar
dates falling on or before December 31, 1999. In all other respects, such
<PAGE>

                                                                              43


computer-based systems and software have not in any way lost functionality or
degraded in performance in any material respect, nor shall such computer-based
systems and software in any way lose functionality or degrade in performance in
any material respect, as a consequence of such computer-based system and
software operating at a date later than December 31, 1999.

                                   ARTICLE IV
                                   CONDITIONS

     The obligations of the Lenders and the Fronting Bank to make Extensions of
Credit to or for the account of any Borrower hereunder, and the effectiveness of
this amendment and restatement, are subject to the satisfaction of the following
conditions:

     SECTION 4.01. RESTATEMENT DATE.

     The Commitment of each Lender to make any Loan and the obligation of the
Fronting Bank to issue any Letter of Credit on or after the date hereof and the
effectiveness of this second amendment and restatement are subject to the
conditions (the first date such conditions are satisfied being hereinafter
referred to as the "RESTATEMENT DATE") that on the Restatement Date:

     (a) The representations and warranties set forth in Article III hereof
shall be true and correct in all material respects on and as of such date 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.

     (b) No Event of Default or Default shall have occurred and be continuing on
such date.

     (c) The "Restatement Date" under, and as defined in, the Facility A Credit
Agreement shall have occurred on or prior to such date.

     (d) The Agents shall have received all accrued but unpaid fees under the
Original Agreement and all other amounts due and payable as of the Restatement
Date by the Borrowers under the Original Agreement or the Letter Agreement, and
the Agents shall have received evidence satisfactory to them that all amounts
outstanding under the Original Agreement have been repaid (or will be repaid on
the Restatement Date with the proceeds of the Loans hereunder).

     (e) The Administrative Agent shall have received an executed counterpart to
this Agreement of each Agent, the Fronting Bank, each of the Lenders and each
Borrower.

     (f) The Administrative Agent shall have received favorable written legal
opinions of (i) (A) Thelen Reid & Priest LLP, special New York counsel to the
Borrowers, and (B) Worsham, Forsythe & Wooldridge, L.L.P., general counsel for
the Borrowers, and (ii) King & Spalding, special New York counsel to the
Administrative Agent, in each case dated the Restatement Date, addressed to the
Administrative Agent, the CAF Agent, the Fronting Bank and the Lenders and in
form and substance satisfactory to the Administrative Agent.
<PAGE>

                                                                              44


     (g) The Administrative Agent shall have received (i) a copy of the
certificate of incorporation, including all amendments thereto, of each
Borrower, certified as of a recent date by the Secretary of State of the State
of Texas, and a certificate as to the good standing of each Borrower as of a
recent date from such Secretary of State; (ii) a certificate of the Secretary or
an Assistant Secretary of each Borrower, dated the Restatement Date and
certifying (A) that attached thereto is a true and complete copy of the bylaws
of such Borrower as in effect on the Restatement 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 of such Borrower authorizing the execution and
delivery by such Borrower of this Agreement, the Borrowings to be made by such
Borrower hereunder and the performance by such 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 incorporation 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 such Borrower; (iii) a certificate
of another officer of such Borrower as to the incumbency and specimen signature
of the Secretary or Assistant Secretary executing the certificate pursuant to
(ii) above; and (iv) a certificate of a Responsible Officer of each Borrower,
dated the Restatement Date, 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
such 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 matters
set forth in paragraphs (a) and (b) of this Section 4.01 are true and correct as
of such date.

     (h) The Agents shall have received such other approvals, opinions and
documents as the Agents, the Fronting Bank or any of the Lenders may have
reasonably requested.

     SECTION 4.02. CONDITIONS FOR ALL EXTENSIONS OF CREDIT.

     The Commitment of each Lender to make each Loan to be made by it in
connection with any Borrowing, and the obligation of the Fronting Bank to issue
any Letter of Credit, shall be subject to the satisfaction of the following
conditions precedent on the date of any such Extension of Credit:

     (a) The Agents shall have received a notice requesting such Extension of
Credit as required by Section 2.03, Section 2.04 or Section 2.05, as applicable.

     (b) The representations and warranties set forth in Article III hereof
(except (i) in the case of a refinancing of a Standby Borrowing with a new
Standby Borrowing that does not increase the aggregate principal amount of the
Loans of any Lender outstanding, the representations set forth in Sections
3.05(d), 3.06, 3.11 and 3.13, and (ii) at any time after March 31, 2000, the
representations set forth in Section 3.14) shall be true and correct in all
material respects on and as of the date of such Extension of Credit with the
<PAGE>

                                                                              45


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 Extension of Credit no Event
of Default or Default shall have occurred and be continuing.

     (d) The Agents shall have received a certificate of a Responsible Officer
of the applicable 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 such Extension of Credit shall be deemed to constitute a representation and
warranty by each Borrower on the date of such Extension of Credit as to the
matters specified in subsections (b) and (c) of this Section 4.02.

                                    ARTICLE V
                                    COVENANTS

     TXU (and each of TXU Electric and TXU Gas, to the extent such covenants
apply to it) 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 corporate 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 5.09.

     SECTION 5.02. 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.

     TXU (and TXU Electric and TXU Gas, to the extent such information relates
to TXU Electric or TXU Gas, as applicable, only) will furnish to the Agents and
each Lender:

     (a) as soon as available and in any event within 120 days after the end of
each fiscal year of TXU, a consolidated balance sheet of TXU and its
Consolidated Subsidiaries as of the end of such fiscal year and the related
consolidated statements of income, retained earnings and cash flows for such
<PAGE>

                                                                              46


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
Securities and Exchange Commission by Deloitte & Touche LLP or other independent
public accountants of nationally recognized standing;

     (b) as soon as available and in any event within 60 days after the end of
each of the first three quarters of each fiscal year of TXU a consolidated
balance sheet of TXU 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 TXU'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 TXU'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 TXU;

     (c) simultaneously with any delivery of each set of financial statements
referred to in paragraphs (a) and (b) above, (i) an unconsolidated balance sheet
of TXU and the related unconsolidated statements of income, retained earnings
and cash flows as of the same date and for the same periods applicable to the
statements delivered pursuant to paragraph (a) or (b) above, as applicable, all
certified (subject to normal year-end adjustments in the case of quarterly
statements) as to fairness of presentation, GAAP and consistency by a Financial
Officer of TXU and (ii) a certificate of a Financial Officer of TXU (A) setting
forth in reasonable detail the calculations required to establish whether TXU
was in compliance with the requirements of Sections 5.11 and 5.12 on the date of
such financial statements, and (B) 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 which TXU
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 which 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 TXU setting forth the
details thereof and the action which TXU is taking or proposes to take with
respect thereto;

     (f) promptly upon the mailing thereof to the shareholders of TXU generally,
copies of all financial statements, reports and proxy statements so mailed;

     (g) 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 which TXU, TXU Electric or TXU
Gas shall have filed with the SEC, or any Governmental Authority succeeding to
any of or all the functions of the SEC;
<PAGE>

                                                                              47


     (h) 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
which 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

     (i) promptly, from time to time, such additional information regarding the
financial position or business of TXU and its Subsidiaries as the Agents, at the
request of any Lender or the Fronting Bank, may reasonably request.

As promptly as practicable after delivering each set of financial statements as
required in paragraph (a) of this Section, TXU shall make available a copy of
the consolidating workpapers used by TXU in preparing such consolidated
statements to 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 or the
Fronting Bank 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
<PAGE>

                                                                              48


provisions of ERISA and the Code except where any noncompliance, individually or
in the aggregate, would not result in a Material Adverse Change.

     SECTION 5.08. USE OF PROCEEDS.

     It will not, and will not cause or permit any of its Subsidiaries to, use
the proceeds of the Extensions of Credit for purposes other than to refinance
the amounts outstanding under the Original Agreement and for working capital and
other general corporate purposes, including commercial paper back-up.

     SECTION 5.09. CONSOLIDATIONS, MERGERS, SALES AND ACQUISITIONS OF ASSETS AND
INVESTMENTS IN SUBSIDIARIES.

     (a) TXU will not (a) consolidate or merge with or into any person unless
(i) the surviving corporation is incorporated 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 TXU hereunder and (ii) no Default or Event of Default
shall have occurred or be continuing at the time of or after giving effect to
such consolidation or merger or (b) sell, lease or otherwise transfer, in a
single transaction or in a series of transactions, all or any Substantial part
of its assets to any person or persons other than a Wholly Owned Subsidiary.
Subject to subsection (b) below, TXU will not permit any Significant Subsidiary
to consolidate or merge with or into, or sell, lease or otherwise transfer all
or any Substantial part of its assets to, any person other than TXU or a Wholly
Owned Subsidiary (or a person which as a result of such transaction becomes a
Wholly Owned Subsidiary), provided that in the case of any merger or
consolidation involving TXU Electric or TXU Gas, such person must assume or be
responsible by operation of law for all the obligations of TXU Electric or TXU
Gas, as applicable, hereunder, and TXU will not in any event permit any such
consolidation, merger, sale, lease or transfer if any Default or Event of
Default shall have occurred and be continuing at the time of or after giving
effect to any such transaction. Notwithstanding the foregoing, (a) neither TXU
nor any of its Subsidiaries will engage to a Substantial extent in businesses
other than those currently conducted by them, or in the case of TXU Gas, by TXU
Gas and other businesses reasonably related thereto, (b) neither TXU 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, TXU would not be in compliance with the covenants set forth in Sections
5.11 and 5.12 and (c) nothing in this Section shall prohibit any sales of assets
permitted by Section 5.10(d).

     (b) Notwithstanding any provision to the contrary in subsection (a) above,
no Subsidiary Borrower may make, or cause or permit any Subsidiary of such
Subsidiary Borrower to make, any Significant Disposition unless:

          (i) TXU shall have assumed joint and several liability for all
     obligations of such Subsidiary Borrower hereunder pursuant to an assumption
     agreement in form and substance satisfactory to the Administrative Agent
     and shall have delivered to the Administrative Agent the following:

               (A) satisfactory opinions of counsel relating to such assumption,
<PAGE>

                                                                              49


               (B) satisfactory evidence that all required actions by, consents
          or approvals of, registrations or filings with, or other action by,
          each Governmental Authority that is or will be required in connection
          with the assumption by TXU of joint and several liability for the
          obligations of such Subsidiary Borrower under this Agreement have been
          duly obtained and are (1) in full force and effect, (2) sufficient for
          their purpose and (3) not subject to any pending or, to the knowledge
          of TXU, threatened appeal or other proceeding seeking reconsideration
          or review thereof, and

               (C) a certificate of a Responsible Officer of TXU certifying
          that, on the date of such Significant Disposition and after giving
          effect thereto, (1) no Default or Event of Default shall have occurred
          and be continuing and (2) each of the representations and warranties
          set forth in Article III hereof (except the representations set forth
          in Section 3.14) shall be true and correct in all material respects on
          and as of such date, 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; or

          (ii) the Commitments available to such Subsidiary Borrower shall have
     been adjusted to an amount (but not in excess of the Commitments available
     to such Subsidiary Borrower immediately prior to such Significant
     Disposition), which, if borrowed hereunder, would not result in such
     Subsidiary Borrower having Subsidiary Borrower Earnings Available for Fixed
     Charges less than or equal to 150% of Subsidiary Borrower Fixed Charges for
     any twelve-month period ending on the last day of any fiscal quarter of
     such Subsidiary Borrower occurring from and including the fiscal quarter
     during which such Significant Disposition is proposed to occur through and
     including the fiscal quarter during which the Maturity Date is then
     scheduled to occur (such amount being the "ADJUSTED COMMITMENT"), as
     demonstrated in the manner described in the next sentence. The Subsidiary
     Borrower proposing to make the Significant Disposition shall demonstrate
     that the conditions set forth in this clause (ii) will be satisfied by
     delivering to the Administrative Agent and the Lenders the following:

               (A) projected statements of income for such Subsidiary Borrower
          and its Subsidiaries (1) for the period from and including the fiscal
          quarter during which such Significant Disposition is proposed to occur
          through and including the fiscal quarter during which the Maturity
          Date is then scheduled to occur (the "COVERAGE TEST PRO-FORMAS"), (2)
          giving pro-forma effect to such proposed Significant Disposition and
          any resulting changes in income of such Subsidiary Borrower, (3)
          assuming that the full amount of the Adjusted Commitment available to
          such Subsidiary Borrower is utilized in the form of Standby Loans
          hereunder, (4) assuming that the LIBO Rate applicable to such Loans is
          at all times equal to the LIBO Rate in effect during the fiscal
          quarter immediately prior to the proposed date of the Significant
          Disposition, and (5) applying the Applicable Margin that reflects the
          ratings that S&P and Moody's have confirmed will be in effect for such
          Subsidiary Borrower after such Significant Disposition; and
<PAGE>

                                                                              50


               (B) a certificate of a Responsible Officer of such Subsidiary
          Borrower certifying that the Coverage Test Pro-formas were prepared in
          good faith and based on the assumptions prescribed above and such
          other assumptions that such officer believes in good faith to be
          reasonable.

     On the date of any reduction of the Commitments pursuant to this clause
     (ii), the affected Subsidiary Borrower shall pay or prepay so much of the
     Standby Borrowings and/or deposit funds in the Cash Collateral Account in
     respect of undrawn Letters of Credit outstanding on such date as shall be
     necessary in order that the Outstanding Credits attributable to such
     Subsidiary Borrower will not exceed the Adjusted Commitment.

     SECTION 5.10. LIMITATIONS ON LIENS.

     Neither TXU nor any Significant Subsidiary 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 TXU or any 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 to sell, any accounts receivable; provided that the
provisions of this Section shall not prevent or restrict the creation,
assumption or existence of:

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

     (b) purchase money Liens (including capital leases) in respect of property
acquired by TXU or any Significant Subsidiary, to secure the purchase price of
such property (or to secure indebtedness incurred prior to, at the time of, or
within 90 days after the acquisition solely for the purpose of financing the
acquisition of such property), or Liens existing on any such property at the
time of acquisition of such property by TXU or such Significant Subsidiary,
whether or not assumed, or any Lien in respect of property of a corporation
existing at the time such corporation becomes a Subsidiary of TXU; 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 of TXU 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 corporation becomes a
          Subsidiary of TXU 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 TXU or such
          Subsidiary, or at the time such corporation becomes a Subsidiary of
          TXU, 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
<PAGE>

     (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 of TXU 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 TXU or any Significant Subsidiary) made in
any one calendar year shall not exceed $50,000,000; or

     (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 TXU or any
Significant Subsidiary; or

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

     (g) leases (other than capital leases) now or hereafter existing and any
renewals and extensions thereof under which TXU or any Significant Subsidiary
may acquire or dispose of any of its property, subject, however, to the terms of
Section 5.09; or

     (h) any Lien created or to be created by the First Mortgage of TXU
Electric; or

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

     (j) pledges or sales by TXU Electric, TXU Gas or Eastern Electricity plc 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) Permitted Security Interests (as such term is defined in the U.K.
Facility Agreement) created by any Significant Subsidiary subject to the U.K.
Facility Agreement; or

     (n) the Liens in favor of the Administrative Agent on funds in the Cash
Collateral Account and on the Cash Collateral Account to secure the
reimbursement obligations of the Borrowers in respect of Letters of Credit.
<PAGE>

                                                                              52


     SECTION 5.11. FIXED CHARGE COVERAGE.

     TXU will not, as of the end of each quarter of each fiscal year of TXU,
permit Consolidated Earnings Available for Fixed Charges for the twelve months
then ended to be less than or equal to 150% of Consolidated Fixed Charges for
the twelve months then ended.

     SECTION 5.12. EQUITY CAPITALIZATION RATIO.

     TXU will not at any time during any period specified below permit
Consolidated Shareholders' Equity to be less than the percentage of Consolidated
Total Capitalization set forth below next to such period:

          ----------------------------------------------------------------------
                         Period                        Percentage
                         ------                        ----------
          ----------------------------------------------------------------------
          Until but excluding 12-31-00                    30%
          ----------------------------------------------------------------------
          12-31-00 and thereafter                         35%
          ----------------------------------------------------------------------

     SECTION 5.13. RESTRICTIVE AGREEMENTS.

     TXU will not, and will not permit TXU Electric, TXU Gas or any other
Subsidiary of TXU with respect to which TXU Electric or TXU Gas is also a
Subsidiary to, enter into any agreement restricting the ability of such
Subsidiary to make payments, directly or indirectly, to its shareholders 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 Subsidiary to make any payment, directly or indirectly, to its
shareholders if the effect of such agreement is to subject such Subsidiary to
restrictions on such payments greater than those to which such Subsidiary is
subject on the date of this Agreement.

                                   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 any Borrower in
or in connection with the execution and delivery of this Agreement or the
Extensions of Credit 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 any Borrower in the payment of any principal
of any Outstanding Credit 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 any Borrower in the payment of any interest on
any Outstanding Credit 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
<PAGE>

                                                                              53


become due and payable, and such default shall continue unremedied for a period
of five days;

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

     (e) default shall be made by any Borrower (i) in the due observance or
performance of any covenant, condition or agreement contained in Section 5.09
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 (b), (c), (d) or (e)(i) above) or in the
Letter Agreement and such default shall continue unremedied for a period of 30
days after notice thereof from the Administrative Agent at the request of any
Lender to such Borrower;

     (f) TXU shall no longer own, directly or indirectly, all the outstanding
common stock of TXU Electric (or any successor) and at least 51% of the
outstanding common stock of TXU Gas (or any successor);

     (g) any 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 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 TXU or any Significant Subsidiary, or of a substantial part of the
property or assets of TXU 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 TXU or any Significant Subsidiary or for a substantial part
of the property or assets of TXU or any Significant Subsidiary or (iii) the
winding up or liquidation of TXU 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) TXU 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 TXU 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
<PAGE>

                                                                              54


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;

     (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 TXU 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 TXU or
any Subsidiary 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 Administrative Agent, at the request of the Required Lenders,
shall, by notice to the Borrowers, take either or both of the following actions,
at the same or different times: (i) terminate forthwith the right of any or all
of the Borrowers to request and receive Extensions of Credit and (ii) declare
the Loans of any or all of the Borrowers 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 such 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 with respect to
any Borrower, the right of such Borrower to request and receive Extensions of
Credit shall automatically terminate and the principal of the Loans then
outstanding of the Borrower with respect to which such event has occurred,
together with accrued interest thereon and any unpaid accrued Fees and all other
liabilities of such 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 such Borrower, anything
contained herein to the contrary notwithstanding.

     Notwithstanding anything to the contrary contained herein, no notice given
or declaration made by the Administrative Agent pursuant to this Article VI
shall affect (i) the obligation of the Fronting Bank to make any payment under
any Letter of Credit in accordance with the terms of such Letter of Credit or
(ii) the obligations of each Lender in respect of each such Letter of Credit;
provided, however, that upon the occurrence and during the continuance of any
Event of Default, the Administrative Agent shall at the request, or may with the
consent, of the Required Lenders, upon notice to each Borrower for the account
of which a Letter of Credit has been issued, require such Borrower to deposit
with the Administrative Agent an amount in the cash collateral account (the
"CASH COLLATERAL ACCOUNT") described below equal to the aggregate maximum amount
available to be drawn under all Letters of Credit issued for the account of such
Borrower and outstanding at such time. Such Cash Collateral Account shall at all
times be free and clear of all rights or claims of third parties. The Cash
Collateral Account shall be maintained with the Administrative Agent in the name
of, and under the sole dominion and control of, the Administrative Agent, and
amounts deposited in the Cash Collateral Account shall bear interest at a rate
<PAGE>

                                                                              55


equal to the rate generally offered by Chase for deposits equal to the amount
deposited by such Borrower in the Cash Collateral Account, for a term to be
determined by the Administrative Agent in its sole discretion. Each Borrower
hereby grants to the Administrative Agent for the benefit of the Fronting Bank
and the Lenders a Lien on, and hereby assigns to the Administrative Agent for
the benefit of the Fronting Bank and the Lenders all of its right, title and
interest in, the Cash Collateral Account and all funds from time to time on
deposit therein to secure its reimbursement obligations in respect of Letters of
Credit issued for its account. If any drawings then outstanding or thereafter
made are not reimbursed in full immediately upon demand or, in the case of
subsequent drawings, upon being made, then, in any such event, the
Administrative Agent may apply the amounts then on deposit in the Cash
Collateral Account, in such priority as the Administrative Agent shall elect,
toward the payment in full of any or all of any Borrower's obligations hereunder
as and when such obligations shall become due and payable, regardless of whether
the amounts to be so applied were deposited by the Borrower for the account of
which the Letter(s) of Credit then being drawn were issued. Upon payment in
full, after the termination of the Letters of Credit, of all such obligations,
the Administrative Agent will repay and reassign to TXU for the account of the
Borrowers any cash then on deposit in the Cash Collateral Account and the Lien
of the Administrative Agent on the Cash Collateral Account and the funds therein
shall automatically terminate.

                                   ARTICLE VII
                                   THE AGENTS

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

     No Agent or 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 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 Borrowers of any of the
terms, conditions, covenants or agreements contained in this Agreement. The
Agents shall not be responsible to the Lenders or the Fronting Bank for the due
<PAGE>

                                                                              56


execution, genuineness, validity, enforceability or effectiveness of this
Agreement or other instruments or agreements. The Agents may deem and treat the
Lender or the Fronting Bank which makes any Extension of Credit as the holder of
the indebtedness resulting therefrom for all purposes hereof until it shall have
received notice from such Lender or the Fronting Bank (as the case may be),
given as provided herein, of the transfer thereof. The Agents 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 and the Fronting Bank. Each
of the Agents 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. No
Agent or any of its directors, officers, employees or agents shall have any
responsibility to the Borrowers on account of the failure of or delay in
performance or breach by the other Agent or any Lender or the Fronting Bank of
any of its obligations hereunder or to the other Agent or any Lender or the
Fronting Bank on account of the failure of or delay in performance or breach by
any other Lender or the Fronting Bank , the other Agent or any Borrower of any
of their respective obligations hereunder or in connection herewith. Each of the
Agents 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.

     The Lenders and the Fronting Bank hereby acknowledge that neither of the
Agents shall 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.

     Subject to the appointment and acceptance of a successor Agent as provided
below, either Agent may resign at any time by notifying the Lenders, the
Fronting Bank and the Borrowers. Upon any such resignation, the Required Lenders
shall have the right to appoint a successor Agent acceptable to the Borrowers.
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
and the Fronting Bank, 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 any 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 Agent.

     With respect to the Extensions of Credit made by it hereunder, each of the
Agents, in its individual capacity and not as an Agent shall have the same
rights and powers as any other Lender and may exercise the same as though it
were not an Agent, and each of the Agents and their Affiliates may accept
deposits from, lend money to and generally engage in any kind of business with
the Borrowers or any Subsidiary or other Affiliate thereof as if it were not an
Agent.
<PAGE>

                                                                              57


     Each Lender agrees (i) to reimburse the Agents, 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 Outstanding Credits) of any
expenses incurred for the benefit of the Lenders or the Fronting Bank in its
role as Agent, including counsel fees and compensation of agents and employees
paid for services rendered on behalf of the Lenders or the Fronting Bank, which
shall not have been reimbursed by the Borrowers and (ii) to indemnify and hold
harmless each of the Agents 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 Borrowers; provided that no Lender shall be liable to any 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 such Agent or any of its directors,
officers, employees or agents. Each Lender and the Fronting Bank agrees that any
allocation made in good faith by the Agents of expenses or other amounts
referred to in this paragraph between this Agreement and the Facility A Credit
Agreement shall be conclusive and binding for all purposes.

     Each Lender and the Fronting Bank acknowledges that it has, independently
and without reliance upon the Agents or any other Lender or the Fronting Bank
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
and the Fronting Bank also acknowledges that it will, independently and without
reliance upon the Agents or any other Lender or the Fronting Bank 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.

     Neither Bank of America, N.A. nor Citibank, N.A. shall, by virtue of its
designation as "Co-Syndication Agent", nor shall The Bank of New York, by virtue
of its designation as "Documentation Agent", have any duties, liabilities,
obligations or responsibilities under this Agreement other than as a Lender
hereunder.

                                  ARTICLE VIII
                                  MISCELLANEOUS

     SECTION 8.01. NOTICES.

     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:

     (a) if to any Borrower, to TXU Business Services Company, Energy Plaza,
1601 Bryan Street, 33rd Floor, Dallas, TX 75201, Attention of Laura Anderson,
Assistant Treasurer (Telecopy No. 214-812-2488);
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                                                                              58


     (b) if to the CAF Agent, to The Chase Manhattan Bank, Loan and Agency
Services Group, One Chase Manhattan Plaza, 8th Floor, New York, New York 10081,
Attention of Chris Consomer (Telecopy No. 212-552-5627);

     (c) if to the Administrative Agent, to The Chase Manhattan Bank, Loan and
Agency Services Group, One Chase Manhattan Plaza, 8th Floor, New York, New York
10081, Attention of Michael Cerniglia (Telecopy No. 212-552-5777), with a copy
to The Chase Manhattan Bank at 270 Park Avenue, New York, New York 10017,
Attention of Robert W. Mathews (Telecopy No. 212-270-3089);

     (d) if to the Fronting Bank, to The Chase Manhattan Bank, c/o Chase
Manhattan Bank Delaware, Letter of Credit Department, 8th Floor, 1201 Market
Street, Wilmington, Delaware 19801, Attention of Michael Handago (Telecopy No.
302-428-3390 or 302-984-4904); and

     (e) if to a Lender, to it at its address (or telecopy number) set forth in
the Administrative Questionnaire delivered to the Administrative Agent by such
Lender in connection with the execution of this Agreement or previously or in
the Assignment and Acceptance pursuant to which such Lender became a party
hereto.

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 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.

     SECTION 8.02. SURVIVAL OF AGREEMENT.

     All covenants, agreements, representations and warranties made by the
Borrowers 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 the Fronting Bank and shall survive
the making by the Lenders and the Fronting Bank of all Extensions of Credit
regardless of any investigation made by the Lenders or the Fronting Bank or on
their behalf, and shall continue in full force and effect as long as the
principal of or any accrued interest on any Outstanding Credit or any Fee or any
other amount payable under this Agreement is outstanding and unpaid or the
Commitments have not been terminated.

     SECTION 8.03. BINDING EFFECT.

     This Agreement shall become effective when it shall have been executed by
the Borrowers and each Agent and when the Administrative Agent shall have
received copies hereof (telecopied or otherwise) which, when taken together,
bear the signature of each Lender and the Fronting Bank, and thereafter shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns, except that the Borrowers shall not have the right to
assign any rights hereunder or any interest herein without the prior consent of
all the Lenders.
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                                                                              59


     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 the Outstanding Credits at the time owing to it);
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 Borrowers, the Agents and the Fronting Bank 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 Acceptance with respect to such assignment is delivered to the
Administrative Agent) shall not be less than $15,000,000 or, if the amount of
the Commitment of the assigning Lender is less than $15,000,000, the aggregate
amount of such Lender's Commitment, (iii) each such assignment shall be of a
constant, and not a varying, percentage of all the assigning Lender's rights and
obligations under this Agreement, (iv) the parties to each such assignment shall
execute and deliver to the Administrative Agent an Assignment and Acceptance,
and a processing and recordation fee of $3,500 (provided that, in the case of
simultaneous assignment of interests under one or more of this Agreement and the
Facility A Credit Agreement, the aggregate fee shall be $3,500), and (v) the
assignee, if it shall not be a Lender, shall deliver to the Administrative Agent
an Administrative Questionnaire. Upon acceptance and recording pursuant to
Section 8.04(e), from and after the effective date specified in each Assignment
and Acceptance, which effective date shall be at least five Business Days after
the execution thereof unless otherwise agreed by the Administrative Agent (the
Borrowers to be given reasonable notice of any shorter period), (A) the assignee
thereunder shall be a party hereto and, to the extent of the interest assigned
by such Assignment and Acceptance, 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 Acceptance, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Acceptance 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 2.13, 2.18
and 8.05 afforded to such Lender prior to its assignment as well as to any Fees
accrued for its account hereunder and not yet paid)). Notwithstanding the
foregoing, any Lender assigning its rights and obligations under this Agreement
may retain any Competitive Loans made by it outstanding at such time, and in
such case shall retain its rights hereunder in respect of any Loans so retained
until such Loans have been repaid in full in accordance with this Agreement.

     (c) By executing and delivering an Assignment and Acceptance, 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 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
<PAGE>

                                                                              60


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 Borrowers or the performance or
observance by the Borrowers 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 Acceptance; (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 Acceptance; (v) such assignee will
independently and without reliance upon the Agents, such assigning Lender or any
other Lender or the Fronting Bank 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 each Agent to take such action as agent on its behalf and to
exercise such powers under this Agreement as are delegated to such 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 which by the terms of this Agreement are required to
be performed by it as a Lender.

     (d) The Administrative Agent shall maintain at one of its offices in the
City of New York a copy of each Assignment and Acceptance 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 Credits owing to,
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 Borrowers, the Agents, the Fronting Bank 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 Acceptance executed
by an assigning Lender and an assignee together with an Administrative
Questionnaire completed in respect of the assignee (unless the assignee shall
already be a Lender hereunder), the processing and recordation fee referred to
in paragraph (b) above and, if required, the written consent of the Borrowers,
the Agents and the Fronting Bank to such assignment, the Administrative Agent
shall (i) accept such Assignment and Acceptance and (ii) record the information
contained therein in the Register.

     (f) Each Lender may without the consent of the Borrowers or the Agents 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 the Outstanding Credits owing to it); 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
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 2.13, 2.18 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
<PAGE>

                                                                              61


entity), except that all claims made pursuant to such Sections shall be made
through such selling Lender, and (iv) the Borrowers, the Agents, the Fronting
Bank 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 Borrowers 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 Credits, (y) extending any scheduled principal payment date or date
fixed for the payment of interest on the Outstanding Credits 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 Borrowers furnished to such Lender by or on behalf
of the Borrowers; 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 Borrowers 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 5.09) by a 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, each 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 such Borrower by the assigning Lender
hereunder.

     (j) Subject to the appointment and acceptance of a successor Fronting Bank
as provided below, the Fronting Bank may resign at any time by notifying the
Lenders and the Borrowers. Upon any such resignation, the Required Lenders shall
have the right to appoint a successor Fronting Bank acceptable to the Borrowers.
If no successor shall have been so appointed by the Required Lenders and shall
have accepted such appointment within 30 days after the retiring Fronting Bank
gives notice of its resignation, then the retiring Fronting Bank may appoint a
successor Fronting Bank, 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 Fronting Bank hereunder by a successor bank, such successor shall
succeed to and become vested with all the rights, powers, privileges and duties
of the retiring Fronting Bank and the retiring Fronting Bank shall be discharged
from its duties and obligations hereunder. After the Fronting Bank's resignation
hereunder, the provisions of Sections 2.13, 2.18 and 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 Fronting Bank.
<PAGE>

                                                                              62


     SECTION 8.05. EXPENSES; INDEMNITY.

     (a) The Borrowers agree jointly and severally to pay all reasonable
out-of-pocket expenses incurred by the Agents in connection with entering into
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 a Borrower) (whether or not the transactions hereby contemplated
are consummated), or incurred by the Agents, the Fronting Bank or any Lender in
connection with the enforcement of their rights in connection with this
Agreement or in connection with the Extensions of Credit made hereunder,
including the reasonable fees and disbursements of counsel for the Agents or, in
the case of enforcement following an Event of Default, the Lenders and the
Fronting Bank. In addition to the foregoing, each Borrower for the account of
which a Letter of Credit is issued shall pay or reimburse the Fronting Bank for
such reasonable, normal and customary costs and expenses as are incurred or
charged by the Fronting Bank in issuing, negotiating, effecting payment under,
amending or otherwise administering any Letter of Credit issued for such
Borrower's account.

     (b) Each of the Borrowers agrees to indemnify each Lender and the Fronting
Bank against any loss, calculated in accordance with the next sentence, or
reasonable expense which such Lender or the Fronting Bank (as the case may be)
may sustain or incur as a consequence of (a) any failure by such Borrower to
borrow or to refinance, convert or continue any Loan hereunder (including as a
result of such 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
or 2.04, (b) any payment, prepayment or conversion, or assignment of a
Eurodollar Loan or Fixed Rate Loan of such 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, (c) any
default in payment or prepayment of the principal amount of any Outstanding
Credit 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 (d) the occurrence of any
Event of Default, 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 or a Fixed
Rate Loan. Such loss shall include an amount equal to the excess, if any, as
reasonably determined by such Lender, of (i) its cost of obtaining the funds for
the Loan being paid, prepaid, refinanced, converted or not borrowed (assumed to
be the LIBO Rate or, in the case of a Fixed Rate Loan, the fixed rate of
interest applicable thereto) 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 which would have commenced on the
date of such failure) over (ii) 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 Borrowers agree jointly and severally to indemnify the Agents, each
Lender, the Fronting Bank, each of their 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
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                                                                              63


losses, claims, damages, liabilities and related expenses, including reasonable
counsel fees and expenses, incurred by or asserted against any Indemnitee
arising out of (i) the consummation of the transactions contemplated by this
Agreement, (ii) the use of the proceeds of the Extensions of Credit 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; provided that 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 judgment of a court of competent
jurisdiction to have resulted from the gross negligence or willful misconduct of
such Indemnitee or (ii) result from any litigation brought by such Indemnitee
against the Borrowers or by any Borrower against such Indemnitee, in which a
final, nonappealable judgment has been rendered against such Indemnitee;
provided, further, that each 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 Outstanding Credits, the invalidity or unenforceability of any term or
provision of this Agreement or any investigation made by or on behalf of any
Agent, any Lender or the Fronting Bank. All amounts due under this Section shall
be payable on written demand therefor.

     (e) A certificate of any Lender, the Fronting Bank or any Agent setting
forth any amount or amounts which such Lender, the Fronting Bank 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 appropriate
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
and the Fronting Bank 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 or the Fronting Bank to or
for the credit or the account of the relevant Borrower against any of and all
the obligations of such Borrower now or hereafter existing under this Agreement
held by such Lender or the Fronting Bank (as the case may be), irrespective of
whether or not such Lender or the Fronting Bank (as the case may be) shall have
made any demand under this Agreement and although such obligations may be
unmatured. The rights of each Lender and the Fronting Bank under this Section
<PAGE>

                                                                              64


are in addition to other rights and remedies (including other rights of setoff)
which such Lender or the Fronting Bank (as the case may be) 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 either Agent or any Lender or the Fronting Bank
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 further exercise thereof or the exercise of any other
right or power. The rights and remedies of the Agents, the Lenders and the
Fronting Bank hereunder are cumulative and are not exclusive of any rights or
remedies which 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 any 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 Borrowers 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 Outstanding Credit, or waive or excuse any such payment or any part
thereof, or decrease the rate of interest on any Outstanding Credit, without the
prior written consent of each Lender affected thereby, (ii) increase any
Commitment or decrease the Facility Fee of any Lender without the prior written
consent of such Lender, or (iii) amend or modify the provisions of Section 2.15
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 Administrative Agent or the CAF Agent or the
Fronting Bank hereunder without the prior written consent of the Administrative
Agent or the CAF Agent or the Fronting Bank, as the case may be. Each Lender and
the Fronting Bank shall be bound by any waiver, amendment or modification
authorized by this Section and any consent by any Lender, any Agent or the
Fronting Bank 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
Agreement 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, including,
without limitation, the Original Agreement, is superseded by this Agreement and
the Letter Agreement. There are no unwritten oral agreements between the
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                                                                              65


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.

     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 or the
Fronting Bank, shall exceed the maximum lawful rate (the "MAXIMUM RATE") which
may be contracted for, charged, taken, received or reserved by such Lender or
the Fronting Bank (as the case may be) in accordance with applicable law, the
rate of interest payable on the Outstanding Credits of such Lender or the
Fronting Bank (as the case may be), together with all Charges payable to such
Lender or the Fronting Bank (as the case may be), shall be limited to the
Maximum Rate.

     (b) If the amount of interest, together with all Charges, payable for the
account of any Lender or the Fronting Bank 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 or the
Fronting Bank's (as the case may be) account in respect of any subsequent
interest computation period, computed pursuant to Section 2.08, would be less
than the Maximum Rate, then the amount of interest, together with all Charges,
payable for such Lender's or the Fronting Bank's (as the case may be) 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
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                                                                              66


the account of any Lender or the Fronting Bank 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) Each 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.

     (b) Each 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 and the Fronting Bank shall use its best efforts to hold in
confidence all information, memoranda, or extracts furnished to such Lender or
the Fronting Bank (as the case may be) (directly or through the Agents) by the
Borrowers hereunder or in connection with the negotiation hereof; provided that
such Lender and the Fronting Bank 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 or the Fronting Bank
(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 or the Fronting Bank (as the case may be)
sells or proposes to sell an assignment or a participation in its Extensions of
Credit hereunder, if such other person agrees for the benefit of the Borrowers
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 or the Fronting Bank (as the case may be)
independently of any disclosure by any Borrower hereunder or in connection with
the negotiation hereof. Notwithstanding the foregoing, any Lender and the
Fronting Bank may disclose the provisions of this Agreement and the amounts,
maturities and interest rates of its Outstanding Credits to any purchaser or
potential purchaser of such Lender's or the Fronting Bank's (as the case may be)
interest in any Outstanding Credits.
<PAGE>

                                                                              67


     SECTION 8.16. TRANSITION PROVISIONS.

     (a) By its execution and delivery of this Agreement and upon the
Restatement Date, each Lender listed in the signature pages to this Agreement
under the caption "Lenders" shall be deemed to have entered into one or more
Assignment and Acceptances with the Original Lenders that are parties hereto on
the terms set forth in this Section 8.16, Section 8.04 and Exhibit C hereto,
pursuant to which each such Lender shall be deemed to have acquired from the
Original Lenders (and the Original Lenders shall be deemed to have transferred
to each such Lender) such portions of the Original Lenders' several Commitments
under (and as such term is defined in) the Original Agreement as will result in
each Lender hereunder having a Commitment equal to the amount set forth for such
Lender on Schedule 2.01 to this Agreement. Each of the Borrowers and each of the
Agents hereby consents to all such assignments, acquisitions and transfers. No
processing fees shall be payable pursuant to Section 8.04 in connection with the
foregoing.

     (b) By its execution and delivery of this Agreement and upon the
Restatement Date, Chase Bank of Texas shall cease to be the Administrative Agent
hereunder and, by its execution and delivery of this Agreement and upon the
Restatement Date, Chase shall succeed Chase Bank of Texas as Administrative
Agent hereunder. Each of the Borrowers consents to such transactions.

     (c) On the Restatement Date, the Total Commitment shall be permanently
reduced to an amount equal to the aggregate amount of the Commitments set forth
on Schedule 2.01 to this Agreement.

                            [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.


                                   TEXAS UTILITIES COMPANY,
                                   doing business as TXU Corp


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



                                   TXU ELECTRIC COMPANY


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



                                   TXU GAS COMPANY


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




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-2


                                   THE CHASE MANHATTAN BANK,
                                   individually and as Administrative Agent,
                                   Competitive Advance Facility Agent and
                                   Fronting Bank


                                   By  /s/ Robert W. Mathews
                                     --------------------------------
                                     Name: Robert W. Mathews
                                     Title:  Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-3


                                   ABN AMRO BANK N.V.


                                   By   /s/ Kevin S. McFadden
                                     --------------------------------
                                   Name: Kevin S. McFadden
                                   Title: Vice President



                                   By   /s/ Kris A. Grosshans
                                     --------------------------------
                                   Name: Kris A. Grosshans
                                   Title: Vice President & Director




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-4


                                   THE BANK OF TOKYO-MITSUBISHI, LTD.


                                   By   /s/ John M. Mearns
                                     --------------------------------
                                   Name: J. Mearns
                                   Title: VP & Manager




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-5


                                   BANQUE NATIONALE DE PARIS


                                   By  /s/ John Stacy
                                     --------------------------------
                                   Name: John Stacy
                                   Title: Senior Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-6


                                   BARCLAYS BANK PLC


                                   By  /s/ Sydney G. Dennis
                                     --------------------------------
                                   Name: Sydney G. Dennis
                                   Title: Director




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-7


                                   BAYERISCHE LANDESBANK GIROZENTRALE
                                   (CAYMAN ISLANDS BRANCH)


                                   By   /s/ Alex Kohnert
                                     --------------------------------
                                   Name: Alex Kohnert
                                   Title: First Vice President



                                   By   /s/ Sean O'Sullivan
                                     --------------------------------
                                   Name: Sean O'Sullivan
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-8


                                   CANADIAN IMPERIAL BANK OF COMMERCE


                                   By  /s/ M. Sanjeeva Senanayake
                                     --------------------------------
                                   Name: M.Sanjeeva Senanayake
                                   Title: Executive Director
                                   CIBC World Markets Corp. As Agent




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                             S-9


                                   CITIBANK, N.A.


                                   By  /s/ Sandip Sen
                                     --------------------------------
                                   Name: Sandip Sen
                                   Title: Managing Director




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-10


                                   COMMERZBANK AG
                                   NEW YORK AND GRAND CAYMAN BRANCHES


                                   By   /s/ Harry P. Yergey
                                     --------------------------------
                                   Name: Harry P. Yergey
                                   Title: SVP & Manager



                                   By   /s/ Subash R. Viswanathan
                                     --------------------------------
                                   Name: Subash R. Viswanathan
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-11


                                   CREDIT LYONNAIS NEW YORK BRANCH


                                   By   /s/ J. Busquet
                                     --------------------------------
                                   Name: J. Busquet
                                   Title: EVP




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-12


                                   CREDIT SUISSE FIRST BOSTON


                                   By   /s/ Douglas E. Maher
                                     --------------------------------
                                   Name: Douglas E. Maher
                                   Title: Vice President



                                   By   /s/ Jeffery B. Ulmer
                                     --------------------------------
                                   Name: Jeffery B. Ulmer
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-13


                                   THE DAI-ICHI KANGYO BANK, LTD.


                                   By   /s/ Azlan S. Ahmad
                                     --------------------------------
                                   Name: Azlan S. Ahmad
                                   Title: Assistant Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-14


                                 DEN DANSKE BANK AKTIESELSKAB


                                 By /s/ John A. O'Neill   /s/ Peter L. Hargraves
                                   ---------------------------------------------
                                   Name: John A. ONeill   Peter L. Hargraves
                                   Title: Vice President  Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-15


                                   DEUTSCHE BANK AG, NEW YORK AND/OR
                                   CAYMAN ISLANDS BRANCH


                                   By   /s/ Sheryl Paynter
                                     --------------------------------
                                   Name: Sheryl Paynter
                                   Title: Assistant Vice President



                                   By   /s/ David Wagstaff IV
                                     --------------------------------
                                   Name: David Wagstaff IV
                                   Title: Director




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-16


                                   DG BANK
                                   DEUTSCHE GENOSSENSCHAFTSBANK AG


                                   By   /s/ S. Wendt
                                     --------------------------------
                                   Name: Sabine Wendt
                                   Title: Vice President



                                   By   /s/ Lynne McCarthy
                                     --------------------------------
                                   Name: Lynne McCarthy
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-17


                                   FIRST UNION NATIONAL BANK (CHARLOTTE)


                                   By  /s/ Joe K. Dancy
                                     --------------------------------
                                   Name: Joe K. Dancy
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-18


                                   GUARANTY FEDERAL BANK, FSB


                                   By  /s/ Jim R. Hamilton
                                     --------------------------------
                                   Name: Jim R. Hamilton
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-19


                                   THE INDUSTRIAL BANK OF JAPAN, LIMITED
                                   NEW YORK BRANCH


                                   By  /s/ Mike Oakes
                                     --------------------------------
                                   Name: Mike Oakes
                                   Title: Senior Vice President, Houston Office




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-20


                                 KBC BANK N.V.


                                 By /s /Robert Snauffer  /s/ Patrick A. Janssens
                                   ---------------------------------------------
                                 Name: Robert Snauffer       Patrick A. Janssens
                                 Title: First Vice President Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-21


                                   LEHMAN COMMERCIAL PAPER INC.


                                   By  /s/ Michale Swanson
                                     --------------------------------
                                   Name: Michale Swanson
                                   Title: Authorized Signatory




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-22


                                   LLOYDS TSB BANK PLC


                                   By  /s/ Windsor R. Davies
                                     --------------------------------
                                   Name: Windsor R. Davies
                                   Title: Director, Corporate Banking, USA
                                           D061



                                   By  /s/ David Rodway
                                     --------------------------------
                                   Name: David Rodway
                                   Title: Assistant Director
                                           R156




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-23


                                   MELLON BANK, N.A.


                                   By  /s/ Richard A. Mathews
                                     --------------------------------
                                   Name: Richard A. Mathews
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-24


                                   MERRILL LYNCH CAPITAL CORPORATION


                                   By  /s/ Carol J.E. Feeley
                                     --------------------------------
                                   Name: Carol J.E. Feeley
                                   Title: Vice President
                                          Merrill Lynch Capital Corp.




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-25


                                   NATIONAL AUSTRALIA BANK LIMITED
                                   A.C.N. 004044937


                                   By  /s/ Frank J. Campiglia
                                     --------------------------------
                                   Name: Frank A. Campiglia
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-26


                                   THE ROYAL BANK OF SCOTLAND PLC


                                   By  /s/ Raja Hussain
                                     --------------------------------
                                   Name: Raja Hussain
                                   Title: Relationship Manager




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-27


                                   THE SANWA BANK, LIMITED
                                   NEW YORK BRANCH


                                   By  /s/ John T. Feeney
                                     --------------------------------
                                   Name: John T. Feeney
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-28


                                   SOCIETE GENERALE


                                   By   /s/ David Bird
                                     --------------------------------
                                   Name: David Bird
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-29


                                   SGZ BANK


                                   By   /s/ M. Baranowski
                                     --------------------------------
                                   Name: M. Baranowski
                                   Title: Vice President



                                   By  /s/ P Sachse
                                     --------------------------------
                                   Name: P Sachse
                                   Title:




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-30


                                   THE SUMITOMO BANK LIMITED


                                   By  /s/ P.R.C. Knight
                                     --------------------------------
                                   Name: P/R.C. Knight
                                   Title: SVP




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-31


                                   TORONTO DOMINION (TEXAS), INC.


                                   By  /s/ Mark A. Baird
                                     --------------------------------
                                   Name: Mark A, Baird
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-32


                                   WESTDEUTSCHE LANDESBANK GIROZENTRALE,
                                   NEW YORK BRANCH


                                   By  /s/ Felicia La Forgia
                                     --------------------------------
                                   Name: Felicia La Forgia
                                   Title: Vice President



                                   By  /s/ Walter T. Duffy III
                                     --------------------------------
                                   Name: Walter T. Duffy III
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-33


                                   THE BANK OF NEW YORK


                                   By  /s/ Nathan S. Howard
                                     --------------------------------
                                   Name: Nathan S. Howard
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-34


                                   FLEET NATIONAL BANK


                                   By  /s/ Thomas L. Rose
                                     --------------------------------
                                   Name: Thomas L. Rose
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-35


                                   BANCA NAZIONALE DEL LAVORO  S.p.A.
                                   NEW YORK BRANCH


                                   By   /s/ Leonardo Valentini
                                     --------------------------------
                                   Name: Leonardo Valentini
                                   Title: First Vice President



                                   By   /s/Roberto Mancone
                                     --------------------------------
                                   Name: Roberto Mancone
                                   Title: Senior Loan Officer




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-36


                                   [INTENTIONALLY OMITTED]




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-37


                                   MORGAN GUARANTY TRUST COMPANY OF
                                   NEW YORK


                                   By   /s/Robert Bottamedi
                                     --------------------------------
                                   Name: Robert Bottamedi
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-38


                                   UBS AG, STAMFORD BRANCH

                                   By   /s/Andrew N. Taylor
                                     --------------------------------
                                   Name: Andrew N. Taylor
                                   Title: Associate Director


                                   By   /s/Dorothy McKinley
                                     --------------------------------
                                   Name: Dorothy McKinley
                                   Title: Associate Director
                                          Loan Portfolio Support US




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-39


                                   BANK OF AMERICA, N.A.


                                   By   /s/Michelle A. Schoenfeld
                                     --------------------------------
                                   Name: Michelle A. Schoenfeld
                                   Title: Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-40


                                   THE FUJI BANK, LIMITED


                                   By   /s/T. Takasawa
                                     --------------------------------
                                   Name:  Tsukada Takasawa
                                   Title: VP




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-41


                                   [INTENTIONALLY OMITTED]




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                                                            S-42


                                   BANK ONE, NA
                                   (Main Office - Chicago)


                                   By   /s/William N. Banks
                                     --------------------------------
                                   Name: William N. Banks
                                   Title: Fist Vice President




                  SIGNATURE PAGE OF FACILITY B CREDIT AGREEMENT
<PAGE>

                                   EXHIBIT A-1

                         FORM OF COMPETITIVE BID REQUEST

The Chase Manhattan Bank,
  as Competitive Advance Facility Agent
  for the Lenders referred to below,
c/o The Chase Manhattan Bank
Loan and Agency Services Group
One Chase Manhattan Plaza, 8th Floor
New York, New York 10081

Attention: Chris Consomer
Telecopy: 212-552-5627

Ladies and Gentlemen:

     The undersigned, [Texas Utilities Company][TXU Electric Company], [TXU Gas
Company] (the "BORROWER"), refers to the Five-Year Second Amended and Restated
Competitive Advance and Revolving Credit Facility Agreement, dated as of
February 25, 2000 (as it may hereafter be amended, modified, extended or
restated from time to time, the "AGREEMENT"), among the Borrower, [Texas
Utilities Company] [TXU Electric Company], [TXU Gas Company], the Lenders named
therein, and The Chase Manhattan Bank, as Administrative Agent, Competitive
Advance Facility Agent and Fronting Bank. 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(a) of
the Agreement that it requests a Competitive Borrowing under the Agreement, and
in that connection sets forth below the terms on which such Competitive
Borrowing is requested to be made:

     (A)  Date of Competitive Borrowing (which is a Business Day)
     (B)  Principal amount of aggregate Competitive Borrowing1
     (C)  Interest rate basis2
     (D)  Interest Period and the last day thereof3


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

2    Eurodollar Loan or Fixed Rate 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 offered 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,

                                        [TEXAS UTILITIES COMPANY]
                                        [TXU ELECTRIC COMPANY]
                                        [TXU GAS CORPORATION]



                                        By
                                          ---------------------------
                                          Name:
                                          Title: [Financial Officer]


                                       2
<PAGE>

                                   EXHIBIT A-2

                    FORM OF NOTICE OF COMPETITIVE BID REQUEST

                                     [Date]
[Name of Lender]
[Address]


Attention:  [          ]

Ladies and Gentlemen:

     Reference is made to the Five-Year Second Amended and Restated Competitive
Advance and Revolving Credit Facility Agreement, dated as of February 25, 2000
(as it may hereafter be amended, modified, extended or restated from time to
time, the "AGREEMENT"), among [Texas Utilities Company][TXU Electric Company],
[TXU Gas Company] (the "BORROWER"), [Texas Utilities Company][TXU Electric
Company], [TXU Gas Company], the Lenders named therein, and The Chase Manhattan
Bank, as Administrative Agent, Competitive Advance Facility Agent and Fronting
Bank. Capitalized terms used herein and not otherwise defined herein shall have
the meanings assigned to such terms in the Agreement. The Borrower made a
Competitive Bid Request on , [___], pursuant to Section 2.03(a) of the
Agreement, and in that connection you are invited to submit a Competitive Bid by
[Date]/[Time].1 Your Competitive Bid must comply with Section 2.03(b) of the
Agreement and the terms set forth below on which the Competitive Bid Request was
made:

     (A)  Date of Competitive Borrowing
                                                       -----------------
     (B)  Principal amount of Competitive Borrowing
                                                       -----------------
     (C)  Interest rate basis
                                                       -----------------


-----------------------------
1    The Competitive Bid must be received by the CAF Agent) in the case of
     Eurodollar Loans, not later than 9:30 a.m., New York City time, three
     Business Days before a proposed Competitive Borrowing, and in the case of
     Fixed Rate Loans, not later than 9:30 a.m., New York City time, on the
     Business Day of a proposed Competitive Borrowing.
<PAGE>

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

                                        Very truly yours,

                                        The Chase Manhattan Bank,
                                        as Competitive Advance Facility Agent,


                                        By
                                          ---------------------------
                                          Name:
                                          Title:
<PAGE>

                                   EXHIBIT A-3

                             FORM OF COMPETITIVE BID

                                     [Date]

The Chase Manhattan Bank,
  as Competitive Advance Facility Agent
  for the Lenders referred to below,
c/o The Chase Manhattan Bank
Loan and Agency Services Group
One Chase Manhattan Plaza, 8th Floor
New York, New York 10081

Attention: Chris Consomer
Telecopy: 212-552-5627


Ladies and Gentlemen:

     The undersigned, [Name of Lender], refers to the Five-Year Second Amended
and Restated Competitive Advance and Revolving Credit Facility Agreement, dated
as of February 25, 2000 (as it may hereafter be amended, modified, extended or
restated from time to time, the "AGREEMENT"), among [Texas Utilities
Company][TXU Electric Company], [TXU Gas Company] (the "BORROWER"), [Texas
Utilities Company][TXU Electric Company], [TXU Gas Company], the Lenders named
therein, and The Chase Manhattan Bank, as Administrative Agent, Competitive
Advance Facility Agent and Fronting Bank. Capitalized terms used herein and not
otherwise defined herein shall have the meanings assigned to such terms in the
Agreement. The undersigned hereby makes a Competitive Bid pursuant to Section
2.03(b) of the Agreement, in response to the Competitive Bid Request made by the
Borrower on , [____], and in that connection sets forth below the terms on which
such Competitive Bid is made:

     (A)  Principal Amount1
                              -----------------
     (B)  Competitive Bid Rate2
                                   -----------------
     (C)  Interest Period and last day thereof
                                        -----------------


-----------------------------
1    Not less than $5,000,000 or greater than the requested Competitive
     Borrowing and in integral multiples of $1,000,000. Multiple bids will be
     accepted by the CAF Agent.

2    i.e., LIBO Rate + or -  %, in the case of Eurodollar Loans or   %, in the
     ----                  --                                      --
     case of Fixed Rate Loans.
<PAGE>

     The undersigned hereby confirms that it is prepared, subject to the
conditions set forth in the Agreement, to extend credit to the Borrower upon
acceptance by the Borrower of this bid in accordance with Section 2.03(d) of the
Agreement.


                                        Very truly yours,

                                        [NAME OF LENDER]



                                        By
                                          ---------------------------
                                          Name:
                                          Title:
<PAGE>

                                   EXHIBIT A-4

                  FORM OF COMPETITIVE BID ACCEPT/REJECT LETTER


                                     [Date]


The Chase Manhattan Bank,
  as Competitive Advance Facility Agent
  for the Lenders referred to below,
c/o The Chase Manhattan Bank
Loan and Agency Services Group
One Chase Manhattan Plaza, 8th Floor
New York, New York 10081

Attention: Chris Consomer
Telecopy: 212-552-5627

Ladies and Gentlemen:

     The undersigned, [Texas Utilities Company][TXU Electric Company], [TXU Gas
Company] (the "BORROWER"), refers to the Five-Year Second Amended and Restated
Competitive Advance and Revolving Credit Facility Agreement, dated as of
February 25, 2000, (as it may hereafter be amended, modified, extended or
restated from time to time, the "AGREEMENT"), among the Borrower, [Texas
Utilities Company] [TXU Electric Company], [TXU Gas Company], the Lenders named
therein, and The Chase Manhattan Bank, as Administrative Agent, Competitive
Advance Facility Agent and Fronting Bank.

     In accordance with Section 2.03(c) of the Agreement, we have received a
summary of bids in connection with our Competitive Bid Request dated           ,
                                                                     ----------
    , and in accordance with Section 2.03(d) of the Agreement, we hereby accept
----
the following bids for maturity on [date]:

     Principal Amount         Fixed Rate/Margin   Lender
     ----------------         -----------------   ------

     $                             [%]/[+/-.   %]
     $


We hereby reject the following bids:


     Principal Amount         Fixed Rate/Margin   Lender
     ----------------         -----------------   ------

     $                             [%]/[+/-.   %]
     $
<PAGE>

     The $               should be deposited in The Chase Manhattan Bank account
          --------------
number [            ] on [date].

                                        Very truly yours,

                                        [TEXAS UTILITIES COMPANY]
                                        [TXU ELECTRIC COMPANY]
                                        [TXU GAS COMPANY]



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


                                       2
<PAGE>

                                   EXHIBIT A-5

                        FORM OF STANDBY BORROWING REQUEST

                                     [Date]


The Chase Manhattan Bank,
  as Administrative Agent for the Lenders referred to below,
Loan and Agency Services Group
One Chase Manhattan Plaza, 8th Floor
New York, New York 10081

Attention:        Michael Cerniglia
Telecopy:         (212) 552-5777


Ladies and Gentlemen:

     The undersigned, [Texas Utilities Company][TXU Electric Company] [TXU Gas
Company] (the "BORROWER"), refers to the Five-Year Second Amended and Restated
Competitive Advance and Revolving Credit Facility Agreement dated as of February
25, 2000 (as it may hereafter be amended, modified, extended or restated from
time to time, the "AGREEMENT"), among the Borrower, [Texas Utilities
Company][TXU Electric Company], [TXU Gas Company], the Lenders named therein,
and The Chase Manhattan Bank, as Administrative Agent, Competitive Advance
Facility Agent and Fronting Bank. 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 2.04 of the
Agreement that it requests a Standby Borrowing under the Agreement, and in that
connection sets forth below the terms on which such Standby Borrowing is
requested to be made:

     (A)  Date of Standby Borrowing (which is a Business Day)
                                                            ------------------
     (B)  Principal amount of Standby Borrowing1
                                                            ------------------
     (C)  Interest rate basis2
                                                            -----------------


-----------------------------
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.


                                       1
<PAGE>

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

     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,

                                        [TEXAS UTILITIES COMPANY]
                                        [TXU ELECTRIC COMPANY]
                                        [TXU GAS COMPANY]


                                        By
                                          ---------------------------
                                          Name:
                                          Title: [Financial Officer]


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

                                   EXHIBIT A-6

                          FORM OF REQUEST FOR ISSUANCE


                                     [Date]


The Chase Manhattan Bank,
  as Administrative Agent
  for the Lenders referred to below
One Chase Manhattan Plaza, 8th Floor
New York, New York 10081
  Attention: Loan and Agency Services Group
  Telecopy: 212-552-5777

Chase Manhattan Bank Delaware
Letter of Credit Department
1201 Market Street, 8th Floor
Wilmington, Delaware 19801
  Attention: Michael Handago
  Telecopy: 302-428-3390 or 302-984-4904)


Ladies and Gentlemen:

     The undersigned, [Texas Utilities Company] [TXU Electric Company] [TXU Gas
Company] (the "BORROWER"), refers to the Five-Year Second Amended and Restated
Competitive Advance and Revolving Credit Facility Agreement, dated as of
February 25, 2000 (as it may hereafter be amended, modified, extended or
restated from time to time, the "AGREEMENT"), among the Borrower, [Texas
Utilities Company],[TXU Electric Company], [TXU Gas Company], the Lenders named
therein, and The Chase Manhattan Bank, as Administrative Agent, Competitive
Advance Facility Agent ad Fronting Bank, and hereby gives you notice,
irrevocably, pursuant to Section 2.05(a) of the Agreement, that the undersigned
hereby requests the issuance of a Letter of Credit, and in connection therewith
sets forth below the terms on which such Letter of Credit is to be issued:

     (i)  (a)  the beneficiary of the Letter of Credit requested hereby is
               _____________, with an address at _____________________;

          (b)  the Borrower's obligations in respect of which such Letter of
               Credit is to be issued are as follows:_____________________;

     (ii) (a)  the conditions under which a drawing may be made under such
               Letter of Credit are as follows: _______________________;


                                       1
<PAGE>

          (b)  the documentation required in respect of such Letter of Credit is
               as follows:_______________________;

     (iii)     the maximum amount to be available under such Letter of Credit
               is __________;

     (iv)      the requested date of issuance (which is a Business Day) is
               _________________; and

     (v)       the expiration date of the Letter of Credit requested hereby is
               ______________.1

     Upon the issuance of the Letter of Credit by the Fronting Bank in response
to this request, the Borrower shall be deemed to have represented and warranted
that the applicable conditions to an issuance of a Letter of Credit that are
specified in Article IV of the Agreement have been satisfied.

                                        Very truly yours,

                                        [TEXAS UTILITIES COMPANY]
                                        [TXU ELECTRIC COMPANY]
                                        [TXU GAS COMPANY]


                                        By
                                          ---------------------------
                                          Name:
                                          Title: [Financial Officer]


-----------------------------
1    Modify request as appropriate if used in connection with the extension,
     modification or amendment of a Letter of Credit.


                                       2
<PAGE>

                                    EXHIBIT B

                      FORM OF ADMINISTRATIVE QUESTIONNAIRE


THE CHASE MANHATTAN BANK
ONE CHASE MANHATTAN PLAZA, 8TH FLOOR
NEW YORK, NY  10081
TEL 212-552-7400
FAX 212-552-5658

                          ADMINISTRATIVE QUESTIONNAIRE

To: The Financial Institutions Party to the TXU Corp Credit Facility.

Please accurately complete the following information and return via FAX to the
attention of:

MICHAEL CERNIGLIA,  CHASE MANHATTAN BANK:  FAX     212- 552- 5777

LEGAL NAME TO APPEAR IN DOCUMENTATION:
-------------------------------------

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

NUMBER OF SIGNATURE LINES NEEDED:
--------------------------------- ----------------------------------------------


GENERAL INFORMATION - DOMESTIC LENDING OFFICE:
---------------------------------------------
Institution Name:
                 ---------------------------------------------------------------
Street Address:
               -----------------------------------------------------------------
City, State, Zip Code:
                      ----------------------------------------------------------

GENERAL INFORMATION - EURODOLLAR LENDING OFFICE:
------------------------------------------------
Institution Name:
                 ---------------------------------------------------------------
Street Address:
               -----------------------------------------------------------------
City, State, Zip Code:
                      ----------------------------------------------------------

CONTACTS/NOTIFICATION METHODS:
------------------------------
CREDIT CONTACTS:
Primary Contact:
                ----------------------------------------------------------------
Street Address:
                ----------------------------------------------------------------
City, State, Zip Code:
                      ----------------------------------------------------------
Phone Number:
             -------------------------------------------------------------------
FAX Number:
           ---------------------------------------------------------------------


Backup Contact:
                ----------------------------------------------------------------
Street Address:
                ----------------------------------------------------------------


                                       1
<PAGE>

City, State, Zip Code:
                      ----------------------------------------------------------
Phone Number:
             -------------------------------------------------------------------
FAX Number:
           ---------------------------------------------------------------------



TAX WITHHOLDING:
---------------
        Non Resident Alien               Y*              N
                                  ------           -----
        * Form 4224 Enclosed
        Tax ID Number
                      -------------------------

CONTACTS/NOTIFICATION METHODS:
-----------------------------
ADMINISTRATIVE CONTACTS - BORROWINGS, PAYDOWNS, INTEREST, FEES, ETC.
Contact:
        ------------------------------------------------------------------------
Street Address:
               -----------------------------------------------------------------
City, State, Zip Code:
                      ----------------------------------------------------------
Phone Number:
             -------------------------------------------------------------------
FAX Number:
           ---------------------------------------------------------------------


BID LOAN NOTIFICATION:  (IF APPLICABLE)
---------------------
Contact:
        ------------------------------------------------------------------------
Street Address:
                ----------------------------------------------------------------
City, State, Zip Code:
                     -----------------------------------------------------------
Phone Number:
             -------------------------------------------------------------------
Fax Number:
           ---------------------------------------------------------------------


PAYMENT INSTRUCTIONS:
--------------------
Name of Bank where funds are to be transferred:

--------------------------------------------------------------------------------
Routing Transit/ABA number of Bank where funds are to be transferred:

--------------------------------------------------------------------------------
Name of Account, if applicable:

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

Account Number:
                ----------------------------------------------------------------

Additional Information:
                       ---------------------------------------------------------

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

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

It is very important that all of the above information is accurately filled in
and returned promptly. If there is someone other than yourself who should


                                       2
<PAGE>

receive this questionnaire, please notify us of their name and FAX number and we
will FAX them a copy of the questionnaire. If you have any questions, please
call me on 212-552- 7906


                                       3
<PAGE>

                                    EXHIBIT C

                                    [FORM OF]

                            ASSIGNMENT AND ACCEPTANCE

     Dated: __________,

     Reference is made to the Five-Year Second Amended and Restated Competitive
Advance and Revolving Credit Facility Agreement, dated as of February 25, 2000
(as amended, modified, extended or restated from time to time, the "AGREEMENT"),
among Texas Utilities Company, TXU Electric Company, TXU Gas Company
(collectively, the "BORROWERS"), the lenders listed in Schedule 2.01 thereto
(the "LENDERS"), and The Chase Manhattan Bank, as Administrative Agent,
Competitive Advance Facility Agent and Fronting Bank. Terms defined in the
Agreement are used herein with the same meanings.

     1. The Assignor hereby sells and assigns, without recourse, to the
Assignee, and the Assignee hereby purchases and assumes, without recourse, from
the Assignor, effective as of the [Effective Date of Assignment set forth
below], the interests set forth on the reverse hereof (the "ASSIGNED INTEREST")
in the Assignor's rights and obligations under the Agreement, including, without
limitation, the interests set forth on the reverse hereof in the Commitment of
the Assignor on the [Effective Date of Assignment] and the Extensions of Credit
owing to the Assignor which are outstanding on the [Effective Date of
Assignment], together with unpaid interest accrued on the assigned Extensions of
Credit to the [Effective Date of Assignment] and the amount, if any, set forth
on the reverse hereof of the Fees accrued to the [Effective Date of Assignment]
for the account of the Assignor. Each of the Assignor and the Assignee hereby
makes and agrees to be bound by all the representations, warranties and
agreements set forth in Section 8.04 of the Agreement, a copy of which has been
received by each such party. From and after the [Effective Date of Assignment],
(i) the Assignee shall be a party to and be bound by the provisions of the
Agreement and, to the extent of the interests assigned by this Assignment and
Acceptance, have the rights and obligations of a Lender thereunder and (ii) the
Assignor shall, to the extent of the interests assigned by this Assignment and
Acceptance, relinquish its rights and be released from its obligations under the
Agreement.

     2. This Assignment and Acceptance is being delivered to the Administrative
Agent together with (i) if the Assignee is organized under the laws of a
jurisdiction outside the United States, the forms specified in Section 2.18(g)
of the Agreement, duly completed and executed by such Assignee, (ii) if the
Assignee is not already a Lender under the Agreement, an Administrative
Questionnaire in the form of Exhibit B to the Agreement and (iii) a processing
and recordation fee of $3,500.


                                       1
<PAGE>

     3. This Assignment and Acceptance shall be governed by and construed in
accordance with the laws of the State of New York.

Date of Assignment:



Legal Name of Assignor:



Legal Name of Assignee:



Assignee's Address for Notices:







Effective Date of Assignment
(may not be fewer than 5 Business
Days after the Date of Assignment
unless otherwise agreed by the
Administrative Agent):


<TABLE>
<CAPTION>

-------------------------------------------------------------------------------------------------
                                                                 Percentage Assigned of
                      Principal Amount Assigned          Facility/Commitment (set forth, to at
     Facility       (and identifying information        least 8 decimals, as a percentage of the
                  as to individual Competitive Loans)  Facility and the aggregate Commitments of
                                                                 all Lenders thereunder
<S>                           <C>                                     <C>
Commitment Assigned:          $____________                           __________%

Standby Loans:                $____________                           __________%

Competitive Loans:            $____________                           __________%

Other Extensions of Credit:   $____________                           __________%

Fees Assigned (if any):       $____________                           __________%

</TABLE>


                                       2
<PAGE>

The terms set forth and on the reverse       Accepted:
side hereof are hereby agreed to:            TEXAS UTILITIES COMPANY


                              , as           By:
------------------------------                  --------------------------------
Assignor                                        Name:
                                                Title:

By:                          , as
  ---------------------------
  Name:                                      TXU ELECTRIC COMPANY
  Title:

                             , as            By:
-----------------------------                   --------------------------------
Assignee,                                       Name:
                                                Title:

By:                          , as
   --------------------------
   Name:                                     TXU GAS COMPANY
   Title:

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

                                             THE CHASE MANHATTAN BANK, as
                                             Administrative Agent, CAF Agent
                                             and Fronting Bank


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


                                       3
<PAGE>

                                  SCHEDULE 2.01

--------------------------------------------------------------------------------
          NAME OF LENDER                                    COMMITMENT
--------------------------------------------------------------------------------
The Chase Manhattan Bank                                    $56,500,000
--------------------------------------------------------------------------------
Bank of America, N.A.                                       $55,000,000
--------------------------------------------------------------------------------
Citibank, N.A.                                              $55,000,000
--------------------------------------------------------------------------------
The Bank of New York                                        $55,000,000
--------------------------------------------------------------------------------
ABN AMRO Bank N.V.                                          $45,000,000
--------------------------------------------------------------------------------
The Bank of Tokyo-Mitsubishi, Ltd.                          $45,000,000
--------------------------------------------------------------------------------
Bank One, NA                                                $45,000,000
(Main Office - Chicago)
--------------------------------------------------------------------------------
Barclays Bank PLC                                           $45,000,000
--------------------------------------------------------------------------------
Bayerische Landesbank Girozentrale                          $45,000,000
(Cayman Island Branch)
--------------------------------------------------------------------------------
Commerzbank AG, New York and Grand Cayman                   $45,000,000
Branches
--------------------------------------------------------------------------------
Den Danske Bank Aktieselskab                                $45,000,000
--------------------------------------------------------------------------------
First Union National Bank (Charlotte)                       $45,000,000
--------------------------------------------------------------------------------
The Royal Bank of Scotland PLC                              $45,000,000
--------------------------------------------------------------------------------
Westdeutsche Landesbank Girozentrale,                       $45,000,000
New York Branch
--------------------------------------------------------------------------------
Credit Lyonnais New York Branch                             $45,000,000
--------------------------------------------------------------------------------
Merrill Lynch Capital Corporation                           $36,000,000
--------------------------------------------------------------------------------
Banque Nationale de Paris                                   $36,000,000
--------------------------------------------------------------------------------
Deutsche Bank AG, New York and/or Cayman Island Branch      $36,000,000
--------------------------------------------------------------------------------
Fleet National Bank                                         $36,000,000
--------------------------------------------------------------------------------
Morgan Guaranty Trust Company of New York                   $36,000,000
--------------------------------------------------------------------------------
Lehman Commercial Paper Inc.                                $36,000,000
--------------------------------------------------------------------------------
Mellon Bank, N.A.                                           $36,000,000
--------------------------------------------------------------------------------
National Australia Bank Limited                             $36,000,000
A.C.N. 004044937
--------------------------------------------------------------------------------
The Sanwa Bank, Limited                                     $36,000,000
New York Branch
--------------------------------------------------------------------------------
Toronto Dominion (Texas), Inc.                              $36,000,000
--------------------------------------------------------------------------------
Banca Nazionale del Lavoro S.p.A.                           $25,000,000
<PAGE>

New York Branch
--------------------------------------------------------------------------------
Canadian Imperial Bank of Commerce                          $25,000,000
--------------------------------------------------------------------------------
Credit Suisse First Boston                                  $25,000,000
--------------------------------------------------------------------------------
The Dai-Ichi Kangyo Bank, Ltd.                              $25,000,000
--------------------------------------------------------------------------------
DG Bank                                                     $25,000,000
Deutche Genossenschaftsbank AG
--------------------------------------------------------------------------------
The Fuji Bank, Limited                                      $25,000,000
--------------------------------------------------------------------------------
The Industrial Bank of Japan, Limited                       $25,000,000
New York Branch
--------------------------------------------------------------------------------
KBC Bank N.V.                                               $25,000,000
--------------------------------------------------------------------------------
Lloyds TSB Bank PLC                                         $25,000,000
--------------------------------------------------------------------------------
Societe Generale                                            $25,000,000
--------------------------------------------------------------------------------
The Sumitomo Bank Limited                                   $25,000,000
--------------------------------------------------------------------------------
UBS AG, Stamford Branch                                     $25,000,000
--------------------------------------------------------------------------------
Guaranty Federal Bank, FSB                                  $13,500,000
--------------------------------------------------------------------------------
SGZ Bank                                                    $10,000,000
--------------------------------------------------------------------------------
                                          TOTAL          $1,400,000,000
--------------------------------------------------------------------------------


--------