Document:

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                                                                     EXHIBIT 4.1

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                               EL PASO CORPORATION

                                     ISSUER

                                       AND

                            THE CHASE MANHATTAN BANK

                                     TRUSTEE

                                   ----------

                          SIXTH SUPPLEMENTAL INDENTURE

                            DATED AS OF MAY 14, 2001

                                       TO

                                    INDENTURE

                            DATED AS OF MAY 10, 1999

                                   ----------

                       7.0 % SENIOR NOTES DUE MAY 15, 2011

                                   ----------

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         SIXTH SUPPLEMENTAL INDENTURE, dated as of May 14, 2001 (herein called
the "Sixth Supplemental Indenture"), between EL PASO CORPORATION (formerly known
as El Paso Energy Corporation), a Delaware corporation (herein called the
"Company"), having its principal office at 1001 Louisiana Street, Houston, Texas
77002 and THE CHASE MANHATTAN BANK, a banking corporation duly organized and
existing under the laws of the State of New York, as trustee under the Indenture
referred to below (herein called the "Trustee").

                             RECITALS OF THE COMPANY

         WHEREAS, the Company has heretofore executed and delivered to the
Trustee the Indenture, dated as of May 10, 1999 (herein called the "Original
Indenture," as supplemented by the First Supplemental Indenture, dated as of May
10, 1999, the Second Supplemental Indenture, dated as of July 12, 1999, the
Third Supplemental Indenture, dated as of July 12, 1999, the Fourth Supplemental
Indenture, dated as of May 31, 2000 and the Fifth Supplemental Indenture, dated
as of February 28, 2001), (collectively and as further supplemented by this
Sixth Supplemental Indenture, dated as of May 14, 2001, the "Indenture"),
providing for the issuance from time to time of one or more series of the
Company's unsecured debentures, notes or other evidences of indebtedness (herein
called the "Securities"), the terms of which are to be determined as set forth
in Section 301 of the Original Indenture; and

         WHEREAS, Section 901 of the Original Indenture provides, among other
things, that the Company and the Trustee may enter into indentures supplemental
to the Original Indenture for, among other things, the purpose of establishing
the form or terms of Securities of any series as permitted by Sections 201 and
301 of the Original Indenture; and

         WHEREAS, the Company desires to create a series of the Securities in an
aggregate principal amount of $500,000,000, which series shall be designated the
7.0% Senior Notes Due May 15, 2011 (the "Notes"), and all action on the part of
the Company necessary to authorize the issuance of the Notes under the Original
Indenture and this Sixth Supplemental Indenture has been duly taken; and

         WHEREAS, all acts and things necessary to make the Notes, when executed
by the Company and completed, authenticated and delivered by the Trustee as
provided in the Original Indenture and this Sixth Supplemental Indenture, the
valid and binding obligations of the Company and to constitute these presents a
valid and binding supplemental indenture and agreement according to its terms,
have been done and performed;

         NOW, THEREFORE, THIS SIXTH SUPPLEMENTAL INDENTURE WITNESSETH:

         That in consideration of the premises and the issuance of the Notes,
the Company covenants and agrees with the Trustee, for the equal and
proportionate benefit of all Holders of the Notes, as follows:

                                      -1-
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                                    ARTICLE I
            TERMS AND ISSUANCE OF 7.0% SENIOR NOTES DUE MAY 15, 2011

         SECTION 1.01 Issue of Notes. A series of Securities which shall be
designated the "7.0% Senior Notes Due May 15, 2011" shall be executed,
authenticated and delivered in accordance with the provisions of, and shall in
all respects be subject to, the terms, conditions and covenants of the Original
Indenture, including without limitation the terms set forth in this Sixth
Supplemental Indenture (including the form of Notes referred to in Section 1.02
hereof). The aggregate principal amount of Notes which may be authenticated and
delivered under the Original Indenture shall not, except as permitted by the
provisions of the Original Indenture, exceed $500,000,000; provided, however,
that this series of Notes may be reopened, without the consent of the holders
thereof, for increases in the aggregate principal amount of the Notes and
issuance of additional Notes or for the establishment of additional terms with
respect to the Notes. The entire amount of Notes may forthwith be executed by
the Company and delivered to the Trustee and shall be authenticated by the
Trustee and delivered to or upon the order of the Company pursuant to Section
303 of the Indenture.

         SECTION 1.02 Forms of Notes and Authentication Certificate. The Notes
initially shall be issuable in the form of one or more Global Securities,
registered in the name of the Depositary or its nominee. The Depository Trust
Company shall be the Depositary for such Global Securities. The forms and terms
of the Notes and the Trustee's certificate of authentication shall be
substantially as set forth on Exhibit A hereto.

                                   ARTICLE II
                                 MISCELLANEOUS

         SECTION 2.01 Execution as Supplemental Indenture. This Sixth
Supplemental Indenture is executed and shall be construed as an indenture
supplemental to the Original Indenture and, as provided in the Original
Indenture, this Sixth Supplemental Indenture forms a part thereof. Except as
herein expressly otherwise defined, the use of the terms and expressions herein
is in accordance with the definitions, uses and constructions contained in the
Original Indenture.

         SECTION 2.02 Responsibility for Recitals, Etc. The recitals herein and
in the Notes (except in the Trustee's certificate of authentication) shall be
taken as the statements of the Company, and the Trustee assumes no
responsibility for the correctness thereof. The Trustee makes no representations
as to the validity or sufficiency of this Sixth Supplemental Indenture or of the
Notes. The Trustee shall not be accountable for the use or application by the
Company of the Notes or of the proceeds thereof.

         SECTION 2.03 Provisions Binding on Company's Successors. All the
covenants, stipulations, promises and agreements in this Sixth Supplemental
Indenture contained by the Company shall bind its successors and assigns whether
so expressed or not.

         SECTION 2.04 New York Contract. THIS SIXTH SUPPLEMENTAL INDENTURE AND
EACH NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK.

                                      -2-
<PAGE>   4

         SECTION 2.05 Execution and Counterparts. This Sixth Supplemental
Indenture may be executed with counterpart signature pages or in any number of
counterparts, each of which shall be an original but such counterparts shall
together constitute but one and the same instrument.

         SECTION 2.06 Capitalized Terms. Capitalized terms not otherwise defined
in this Sixth Supplemental Indenture shall have the respective meanings assigned
to them in the Original Indenture.

                                      -3-
<PAGE>   5

         IN WITNESS WHEREOF, said EL PASO CORPORATION has caused this Sixth
Supplemental Indenture to be executed in its corporate name by its Chairman of
the Board or its President or one of its Vice Presidents, and said THE CHASE
MANHATTAN BANK has caused this Sixth Supplemental Indenture to be executed in
its corporate name by one of its Assistant Vice Presidents as of May 14, 2001.

                                    EL PASO CORPORATION

                                    By: /s/ C. DANA RICE
                                        ----------------------------------------
                                        Name:    C. Dana Rice
                                        Title:   Senior Vice President

                                    THE CHASE MANHATTAN BANK

                                    By: /s/ RICHARD LORENZEN
                                        ----------------------------------------
                                        Name:    Richard Lorenzen
                                        Title:   Assistant Vice President

                                      -4-
<PAGE>   6

                                    EXHIBIT A

         [THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR
EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE
DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT
IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY
AUTHENTICATED AND DELIVERED UPON REGISTRATION OF, TRANSFER OF, OR IN EXCHANGE
FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE
FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

         UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED
IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS
MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL IN AS MUCH AS
THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]*

                               EL PASO CORPORATION

                        7.0% SENIOR NOTE DUE MAY 15, 2011

NO.                                                             U.S.$500,000,000
CUSIP No.

         EL PASO CORPORATION, a corporation duly incorporated and existing under
the laws of Delaware (herein called the "Company," which term includes any
successor Person under the Indenture hereinafter referred to), for value
received, hereby promises to pay to ________________________ , or registered
assigns, the principal sum of ___________ United States Dollars on May 15, 2011,
and to pay interest thereon from May 14, 2001, or from the most recent Interest
Payment Date to which interest has been paid or duly provided for, semi-annually
on May 15 and November 15 in each year, commencing November 15, 2001, at the
rate of 7.0% per annum, until the principal hereof is paid or made available for
payment. The interest so payable, and punctually paid or duly provided for, on
any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest,

----------
* Insert in Global Securities only.

                                      -5-
<PAGE>   7

which shall be the May 1 or November 1 (whether or not a Business Day), as the
case may be, next preceding such Interest Payment Date. Any such interest not so
punctually paid or duly provided for shall forthwith cease to be payable to the
Holder on such Regular Record Date and shall either be paid to the Person in
whose name this Security (or one or more Predecessor Securities) is registered
at the close of business on a Special Record Date for the payment of such
Defaulted Interest to be fixed by the Trustee, notice of which shall be given to
Holders of Securities of this series not less than 10 days prior to such Special
Record Date, or be paid at such time in any other lawful manner not inconsistent
with the requirements of any securities exchange on which the Securities of this
series may be listed, and upon such notice as may be required by such exchange,
all as more fully provided in such Indenture.

         [Payment of the principal of and premium, if any, and interest on this
Security will be made by transfer of immediately available funds to a bank
account in New York, New York designated by the Holder in such coin or currency
of the United States of America as at the time of payment is legal tender for
payment of public and private debts.]*

         [Payment of the principal of (and premium, if any) and interest on this
Security will be made at the office or agency of the Company maintained for that
purpose in the Borough of Manhattan, The City of New York, in such coin or
currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts, or at such other offices or
agencies as the Company may designate; provided, however, that payment of
interest may be made at the option of the Company by check mailed to the
addresses of the Persons entitled thereto as such addresses shall appear in the
Security Register.]**

         Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

         Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

----------
*  Insert in Global Securities only.
** Insert in Definitive Securities only.

                                      A-2
<PAGE>   8

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

Dated:

                                           EL PASO CORPORATION

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

         This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                           THE CHASE MANHATTAN BANK,
                                                    AS TRUSTEE

                                           By:
                                              ----------------------------------
                                                  Authorized Officer

                                      A-3
<PAGE>   9

                               EL PASO CORPORATION
                        7.0% SENIOR NOTE DUE MAY 15, 2011

         This Security is one of a duly authorized issue of Securities of the
Company (the "Securities"), issued and to be issued in one or more series under
an Indenture dated as of May 10, 1999 (the "Indenture"), between the Company and
The Chase Manhattan Bank, as Trustee (the "Trustee," which term includes any
successor trustee under the Indenture), to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the respective
rights, limitations of rights, obligations, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms upon
which the Securities are, and are to be, authenticated and delivered. As
provided in the Indenture, the Securities may be issued in one or more series,
which different series may be issued in various aggregate principal amounts, may
mature at different times, may bear interest, if any, at different rates, may be
subject to different redemption provisions, if any, may be subject to different
sinking, purchase or analogous funds, if any, may be subject to different
covenants and Events of Default and may otherwise vary as in the Indenture
provided or permitted. This Security is one of a series of Securities designated
on the face hereof limited in aggregate principal amount to U.S. $500,000,000;
provided, however, that this series of Securities may be reopened, without the
consent of the holders hereof, for increases in the aggregate principal amount
of this series of Securities and issuance of additional Securities of this
series or for the establishment of additional terms with respect to the
Securities of this series.

         The Securities of this series are redeemable, upon not less than 30 nor
more than 60 days' notice by mail, as a whole or in part, at the option of the
Company at any time at a Redemption Price equal to the greater of (i) 100% of
the principal amount thereof or (ii) as determined by an Independent Investment
Banker, the sum of the present values of the remaining scheduled payments of
principal and interest thereon discounted to the date of redemption on a
semi-annual basis (assuming a 360-day year consisting of twelve 30-day months)
at the Adjusted Treasury Rate, plus, in each case, accrued and unpaid interest
thereon to the date of redemption, but interest installments whose Stated
Maturity is on or prior to such date of redemption will be payable to the
Holders of such Securities, or one or more Predecessor Securities, of record at
the close of business on the relevant Record Dates referred to on the face
hereof, all as provided in the Indenture.

         "Adjusted Treasury Rate" means, with respect to any Redemption Date,
the rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such Redemption Date, plus 0.25%.

         "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker that (i) has a maturity comparable
to the remaining term of the Securities of this series to be redeemed and (ii)
would be used, at the time of selection and in accordance with customary
financial practice, to price new issues of corporate debt securities of
comparable maturity to the remaining term of such Securities.

         "Comparable Treasury Price" means, with respect to any Redemption Date,
(A) the average of the Reference Treasury Dealer Quotations for such Redemption
Date, after excluding

                                      A-4
<PAGE>   10

the highest and lowest such Reference Treasury Dealer Quotations, (B) if the
Trustee obtains fewer than three such Reference Treasury Dealer Quotations, the
average of all such Reference Treasury Dealer Quotations, or (C) if only one
Reference Treasury Dealer Quotation is received, such Reference Treasury Dealer
Quotation.

         "Independent Investment Banker" means one of the Reference Treasury
Dealers appointed by the Trustee after consultation with the Company.

         "Reference Treasury Dealer" means (A) each of Salomon Smith Barney
Inc., BNP Paribas Securities Corp., BNY Capital Markets, Inc. and TD Securities
(USA) Inc. (or their respective affiliates which are Primary Treasury Dealers),
and their respective successors; provided, however, that if any of the foregoing
shall cease to be a primary U.S. Government securities dealer in New York City
(a "Primary Treasury Dealer"), the Company will substitute therefor another
Primary Treasury Dealer; and (B) any other Primary Treasury Dealer(s) selected
by the Company.

         "Reference Treasury Dealer Quotation" means, with respect to each
Reference Treasury Dealer and any Redemption Date, the average, as determined by
the Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m.(New York
City time) on the third Business Day preceding such Redemption Date.

         Notwithstanding Section 1104 of the Indenture, the notice of redemption
with respect to the foregoing redemption need not set forth the Redemption Price
but only the manner of calculation thereof.

         Promptly after the calculation thereof, the Company shall give the
Trustee written notice of the Redemption Price for the foregoing redemption, and
the Trustee shall have no responsibility for such calculation.

         In the event of redemption of this Security in part only, a new
Security or Securities of this series and of like tenor for the unredeemed
portion hereof will be issued in the name of the Holder hereof upon the
cancellation hereof.

         If an Event of Default with respect to the Securities of this series
shall occur and be continuing, the principal of the Securities of this series
may be declared due and payable in the manner and with the effect provided in
the Indenture.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Outstanding Securities of all series to be affected (voting as one class). The
Indenture also contains provisions permitting the Holders of a majority in
aggregate principal amount of the Outstanding Securities of all affected series
(voting as one class), on behalf of the Holders of all Securities of such
series, to waive compliance by the Company with certain provisions of the
Indenture. The Indenture permits, with certain exceptions as therein provided,
the Holders of a majority in aggregate principal amount of Securities of any
series then Outstanding to waive past defaults under the Indenture with respect
to such series and their

                                      A-5
<PAGE>   11

consequences. Any such consent or waiver by the Holder of this Security shall be
conclusive and binding upon such Holder and upon all future Holders of this
Security and of any Security issued upon the registration of transfer hereof or
in exchange herefor or in lieu hereof, whether or not notation of such consent
or waiver is made upon this Security.

         As provided in and subject to the provisions of the Indenture, the
Holder of this Security shall not have the right to institute any proceeding
with respect to the Indenture or for the appointment of a receiver or trustee or
for any other remedy thereunder, unless such Holder shall have previously given
the Trustee written notice of a continuing Event of Default with respect to the
Securities of this series, the Holders of not less than 25% in principal amount
of the Securities of this series at the time Outstanding shall have made written
request to the Trustee to institute proceedings in respect of such Event of
Default as Trustee and offered the Trustee reasonable indemnity and the Trustee
shall not have received from the Holders of a majority in principal amount of
the Securities of this series at the time Outstanding a direction inconsistent
with such request, and shall have failed to institute any such proceeding, for
60 days after receipt of such notice, request and offer of indemnity. The
foregoing shall not apply to any suit instituted by the Holder of this Security
for the enforcement of any payment of principal hereof or interest hereon on or
after the respective due dates expressed herein.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of, premium, if any, and
interest on this Security at the times, place(s) and rate, and in the coin or
currency, herein prescribed.

         [This Global Security or portion hereof may not be exchanged for
Definitive Securities except in the limited circumstances provided in the
Indenture.

         The holders of beneficial interests in this Global Security will not be
entitled to receive physical delivery of Definitive Securities except as
described in the Indenture and will not be considered the Holders hereof for any
purpose under the Indenture.]*

         [As provided in the Indenture and subject to certain limitations set
forth, the transfer of this Security is registerable in the Security Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company in the Borough of Manhattan, The City of New York or at
such other offices or agencies as the Company may designate, duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or his
attorney duly authorized in writing, and thereupon one or more new Securities of
this series and of like tenor, of authorized denominations and for a like
aggregate principal amount, will be issued to the designated transferee or
transferees.]**

         The Securities of this series are issuable only in registered form,
without coupons, in denominations of U.S. $1,000 and any integral multiple
thereof. As provided in the Indenture and subject to certain limitations therein
set forth, the Securities of this series are exchangeable

----------
*  Insert in Global Securities only.
** Insert in Definitive Securities only.

                                      A-6
<PAGE>   12

for a like aggregate principal amount of Securities of this series and of like
tenor of a different authorized denomination, as requested by the Holder
surrendering the same.

         No service charge shall be made for any such registration of transfer
or exchange, but the Company may require payment of a sum sufficient to cover
any transfer tax or other similar governmental charge payable in connection
therewith.

         Prior to due presentment of this Security for registration of transfer,
the Company, the Trustee and any agent of the Company or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

         No recourse under or upon any obligation, covenant or agreement of or
contained in the Indenture or of or contained in any Security, or for any claim
based thereon or otherwise in respect thereof, or in any Security, or because of
the creation of any indebtedness represented thereby, shall be had against any
incorporator, stockholder, officer or director, as such, past, present or
future, of the Company or of any successor Person, either directly or through
the Company or any successor Person, whether by virtue of any constitution,
statute or rule of law, or by the enforcement of any assessment, penalty or
otherwise; it being expressly understood that all such liability is hereby
expressly waived and released by the acceptance hereof and as a condition of,
and as part of the consideration for, the Securities and the execution of the
Indenture.

         The Indenture provides that the Company (a) will be discharged from any
and all obligations in respect of the Securities (except for certain obligations
described in the Indenture), or (b) need not comply with certain restrictive
covenants of the Indenture, in each case if the Company deposits, in trust, with
the Trustee money or U.S. Government Obligations (or a combination thereof)
which through the payment of interest thereon and principal thereof in
accordance with their terms will provide money, in an amount sufficient to pay
all the principal of and interest of the Securities, but such money need not be
segregated from other funds except to the extent required by law.

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

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

                                      A-7
<PAGE>   13

              [FOR VALUE RECEIVED, the undersigned hereby sell(s),
                         assign(s) and transfer(s) unto

--------------------------------------------------------------------------------
            (Please Print or Typewrite Name and Address of Assignee)

the within instrument of EL PASO CORPORATION and does hereby irrevocably
constitute and appoint ________________________ Attorney to transfer said
instrument on the books of the within-named Company, with full power of
substitution in the premises.

Please Insert Social Security or
Other Identifying Number of Assignee:

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

Dated:
        ------------------------------------     -------------------------------
                                                          (Signature)

NOTICE: The signature to this assignment must correspond with the name as
written upon the face of the within instrument in every particular, without
alteration or enlargement or any change whatever.]**

--------
**       Insert in Definitive Securities only.

                                      A-8<PAGE>   1
                                                                    EXHIBIT 10.1

                           MASTER SEPARATION AGREEMENT

                                     BETWEEN

                          RELIANT ENERGY, INCORPORATED

                                       AND

                             RELIANT RESOURCES, INC.

<PAGE>   2

                                TABLE OF CONTENTS
<TABLE>

<S>                 <C>                                                                                           <C>
ARTICLE I           DEFINITIONS...................................................................................2

         1.1        Action........................................................................................2
         1.2        Affiliates....................................................................................2
         1.3        Ancillary Agreements..........................................................................2
         1.4        Business Day..................................................................................2
         1.5        Business Separation Plan......................................................................2
         1.6        Choice Date...................................................................................2
         1.7        Code..........................................................................................2
         1.8        Commission....................................................................................2
         1.9        Customer Care LLC.............................................................................2
         1.10       Distribution..................................................................................2
         1.11       Distribution Agent............................................................................2
         1.12       Distribution Date.............................................................................3
         1.13       Exchange Act..................................................................................3
         1.14       Final Order...................................................................................3
         1.15       Genco Assets..................................................................................3
         1.16       Genco Business................................................................................3
         1.17       Genco; Genco Inc..............................................................................3
         1.18       Genco Liabilities.............................................................................3
         1.19       Genco LP......................................................................................4
         1.20       Genco Option..................................................................................4
         1.21       Genco Option Agreement........................................................................4
         1.22       Genco Organization Date.......................................................................4
         1.23       Genco Public Ownership Event..................................................................4
         1.24       Governmental Approvals........................................................................4
         1.25       Governmental Authority........................................................................4
         1.26       Group.........................................................................................4
         1.27       Holding Company Restructuring.................................................................4
         1.28       Indebtedness..................................................................................4
         1.29       Indemnifying Party............................................................................4
         1.30       Indemnitee....................................................................................5
         1.31       Information...................................................................................5
         1.32       Insurance Proceeds............................................................................5
         1.33       IPO...........................................................................................5
         1.34       IPO Closing Date..............................................................................5
         1.35       IPO Prospectus................................................................................5
         1.36       IPO Registration Statement....................................................................5
         1.37       Liabilities...................................................................................5
         1.38       Losses........................................................................................5
         1.39       Mortgage......................................................................................6
         1.40       MRT Energy Marketing Assets and Liabilities...................................................6
         1.41       NYSE..........................................................................................6
         1.42       Person........................................................................................6
</TABLE>

                                      -i-
<PAGE>   3
<TABLE>

<S>                 <C>                                                                                           <C>
         1.43       PUCT..........................................................................................6
         1.44       RECI..........................................................................................6
         1.45       Record Date...................................................................................6
         1.46       Regco.........................................................................................6
         1.47       Regulated Retail Assets.......................................................................6
         1.48       Regulated Retail Business.....................................................................6
         1.49       Regulated Retail Liabilities..................................................................6
         1.50       Regulatory Proceedings........................................................................7
         1.51       REI's Auditors................................................................................7
         1.52       REI Business..................................................................................7
         1.53       REI Group.....................................................................................7
         1.54       REI Indemnitees...............................................................................7
         1.55       REPG..........................................................................................7
         1.56       RERC..........................................................................................7
         1.57       RES...........................................................................................7
         1.58       Resources Auditors............................................................................7
         1.59       Resources Balance Sheet.......................................................................7
         1.60       Resources Business............................................................................7
         1.61       Resources Common Stock........................................................................8
         1.62       Resources Debt Obligations....................................................................8
         1.63       Resources Excluded Liabilities................................................................8
         1.64       Resources Group...............................................................................8
         1.65       Resources Indemnitees.........................................................................8
         1.66       Resources Liabilities.........................................................................8
         1.67       Resources Rights Plan.........................................................................9
         1.68       Retail Electric Provider LLC..................................................................9
         1.69       Retail Holdings LLC...........................................................................9
         1.70       Separation....................................................................................9
         1.71       Separation Date...............................................................................9
         1.72       Subsidiary....................................................................................9
         1.73       Taxes........................................................................................10
         1.74       Tax Allocation Agreement.....................................................................10
         1.75       Third Party Claim............................................................................10
         1.76       Underwriters.................................................................................10
         1.77       Underwriting Agreement.......................................................................10
         1.78       Unregulated Retail Assets....................................................................10
         1.79       Unregulated Retail Business..................................................................10
         1.80       Unregulated Retail Liabilities...............................................................10
         1.81       Utilities Code...............................................................................10

ARTICLE II          SEPARATION...................................................................................10

         2.1        Separation Date..............................................................................10
         2.2        Restructuring Transactions...................................................................11
         2.3        Release from Mortgage, etc...................................................................11
         2.4        Instruments of Transfer and Assumption.......................................................12
         2.5        Agreements...................................................................................12
</TABLE>

                                      -ii-
<PAGE>   4

<TABLE>

<S>                 <C>                                                                                          <C>
ARTICLE III         MUTUAL RELEASES; INDEMNIFICATION.............................................................13

         3.1        Release of Pre-Closing Claims................................................................13
         3.2        Indemnification by Resources.................................................................15
         3.3        Indemnification by REI.......................................................................16
         3.4        Indemnification Obligations Net of Insurance Proceeds and Other Amounts......................16
         3.5        Procedures for Indemnification of Third Party Claims.........................................17
         3.6        Additional Matters...........................................................................18
         3.7        Remedies Cumulative..........................................................................18
         3.8        Survival of Indemnities......................................................................19
         3.9        Indemnification of Directors and Officers....................................................19

ARTICLE IV          THE IPO AND ACTIONS PENDING THE IPO..........................................................19

         4.1        Transactions Prior to the IPO................................................................19
         4.2        Use of Proceeds..............................................................................20
         4.3        Cooperation..................................................................................20
         4.4        Conditions Precedent to Consummation of the IPO..............................................20
         4.5        Cancellation of Outstanding Intercompany Indebtedness........................................21

ARTICLE V           CORPORATE GOVERNANCE AND CERTAIN  FINANCIAL REPORTING AND OTHER MATTERS......................22

         5.1        Charter and Bylaws...........................................................................22
         5.2        Rights Plan Amendments.......................................................................22
         5.3        Charter/Bylaw Amendments.....................................................................22
         5.4        Resources Board Representation...............................................................22
         5.5        Issuance of Stock............................................................................24

ARTICLE VI          HOLDING COMPANY RESTRUCTURING................................................................24

         6.1        Intent to Effect Holding Company Restructuring...............................................24
         6.2        Restructuring Steps..........................................................................24
         6.3        Actions Prior to the Holding Company Restructuring...........................................25
         6.4        Conditions to Holding Company Restructuring..................................................25
         6.5        Sole Discretion of REI.......................................................................26

ARTICLE VII         THE DISTRIBUTION.............................................................................26

         7.1        The Distribution.............................................................................26
         7.2        Actions Prior to the Distribution............................................................27
         7.3        Sole Discretion of REI.......................................................................28
         7.4        Conditions to the Distribution...............................................................28
         7.5        Fractional Shares............................................................................29

ARTICLE VIII        GENCO TRANSACTIONS...........................................................................29

         8.1        Organization of Genco LP.....................................................................29
         8.2        Genco Contracts..............................................................................29
         8.3        Instruments of Transfer and Assumption.......................................................29
         8.4        Organization of Genco Inc....................................................................30
</TABLE>

                                     -iii-
<PAGE>   5

<TABLE>

<S>                 <C>                                                                                          <C>
         8.5        Releases and Indemnities.....................................................................30

ARTICLE IX          ARBITRATION; DISPUTE RESOLUTION..............................................................30

         9.1        Agreement to Arbitrate.......................................................................30
         9.2        Escalation...................................................................................31
         9.3        Demand for Arbitration.......................................................................31
         9.4        Arbitrators..................................................................................32
         9.5        Hearings.....................................................................................33
         9.6        Discovery and Certain Other Matters..........................................................33
         9.7        Certain Additional Matters...................................................................34
         9.8        Arbitration of Genco Option Agreement Cases..................................................35
         9.9        Continuity of Service and Performance........................................................35
         9.10       Law Governing Arbitration Procedures.........................................................35

ARTICLE X           COVENANTS AND OTHER MATTERS..................................................................35

         10.1       Other Agreements.............................................................................35
         10.2       Further Instruments..........................................................................36
         10.3       Agreement For Exchange of Information........................................................36
         10.4       Auditors and Audits; Annual and Quarterly Statements and Accounting..........................38
         10.5       Audit Rights.................................................................................40
         10.6       Preservation of Legal Privileges.............................................................40
         10.7       Payment of Expenses..........................................................................41
         10.8       Governmental Approvals.......................................................................41
         10.9       Regulatory Proceedings.......................................................................41
         10.10      Continuance of REI Credit Support; Borrowings................................................43
         10.11      Certain Non-competition Provisions; Freedom of Action........................................44
         10.12      Clawback Payment.............................................................................44
         10.13      Nuclear Decommissioning Trust and Investment.................................................44
         10.14      Auctions of Capacity.........................................................................45
         10.15      Confidentiality..............................................................................46
         10.16      1000 Main Lease..............................................................................47

ARTICLE XI          MISCELLANEOUS................................................................................48

         11.1       Limitation of Liability......................................................................48
         11.2       Entire Agreement.............................................................................48
         11.3       Governing Law................................................................................48
         11.4       Termination..................................................................................48
         11.5       Notices......................................................................................48
         11.6       Counterparts.................................................................................49
         11.7       Binding Effect; Assignment...................................................................49
         11.8       Severability.................................................................................49
         11.9       Failure or Indulgence Not Waiver; Remedies Cumulative........................................49
         11.10      Amendment....................................................................................49
         11.11      Authority....................................................................................49
         11.12      Interpretation...............................................................................50
         11.13      Conflicting Agreements.......................................................................50
</TABLE>

                                      -iv-
<PAGE>   6

                                      -v-
<PAGE>   7

                           MASTER SEPARATION AGREEMENT

     THIS MASTER SEPARATION AGREEMENT (this "Agreement") is entered into as of
December 31, 2000, between Reliant Energy, Incorporated, a Texas corporation
("REI"), and Reliant Resources, Inc., a Delaware corporation ("Resources").
Capitalized terms used herein and not otherwise defined shall have the meanings
ascribed to such terms in Article I hereof.

                                    RECITALS

     WHEREAS, Resources is a wholly owned subsidiary of REI; and

     WHEREAS, the Board of Directors of REI has determined that it would be
appropriate and desirable for REI to separate the Resources Group from the REI
Group, and, in that connection, for Resources or its Subsidiaries to acquire
certain entities currently associated with the Resources Business and certain
other assets from REI or its Subsidiaries and to assume related liabilities; and

     WHEREAS, the Board of Directors of Resources has also approved such
transactions; and

     WHEREAS, REI and Resources currently contemplate that Resources will make
an initial public offering ("IPO") of an amount of its common stock pursuant to
a registration statement on Form S-1 filed pursuant to the Securities Act of
1933, as amended, that will reduce REI's ownership of Resources by less than
20%; and

     WHEREAS, REI currently contemplates that, following the IPO, REI's
successor holding company will distribute to the holders of its common stock, by
means of a pro rata distribution, all of the shares of Resources common stock it
then owns (the "Distribution"); and

     WHEREAS, REI and Resources intend that the Distribution will qualify as a
tax-free distribution under Section 355 of the Internal Revenue Code of 1986, as
amended (the "Code"), and that this Agreement is intended to be, and is hereby
adopted as, a plan of reorganization under Section 368 of the Code; and

     WHEREAS, the parties intend in this Agreement, including the Exhibits and
Schedules hereto, to set forth the principal arrangements between them regarding
the separation of the Resources Group from the REI Group, the IPO, and the
Distribution.

     NOW, THEREFORE, in consideration of the foregoing and the covenants and
agreements set forth below, the parties hereto agree as follows:

<PAGE>   8

                                   ARTICLE I

                                   DEFINITIONS

     1.1 ACTION. "Action" means any demand, action, suit, countersuit,
arbitration, inquiry, proceeding or investigation by or before any federal,
state, local, foreign or international Governmental Authority or any arbitration
or mediation tribunal.

     1.2 AFFILIATES. An "Affiliate" of any Person means another Person that
directly, or indirectly through one or more intermediaries, controls, is
controlled by, or is under common control with, such Person. For this purpose
"control" means the possession, directly or indirectly, of the power to direct
or cause the direction of the management and policies of the Person controlled,
whether through ownership of voting securities, by contract or otherwise. The
fact that any Person may be deemed at any time an Affiliate of another Person
for purposes of the Utilities Code shall not create any implication that such
Persons are "affiliates" for purposes of this Agreement. Notwithstanding
anything herein to the contrary, no member of the Resources Group shall be
deemed an Affiliate of any member of the REI Group and no member of the REI
Group shall be deemed an Affiliate of any member of the Resources Group.

     1.3 ANCILLARY AGREEMENTS. "Ancillary Agreements" has the meaning set forth
in Section 2.5.

     1.4 BUSINESS DAY. "Business Day" means a day other than a Saturday, a
Sunday or a day on which banking institutions located in the State of Texas are
authorized or obligated by law or executive order to close.

     1.5 BUSINESS SEPARATION PLAN. "Business Separation Plan" means the Business
Separation Plan, as amended, filed by REI with the PUCT in accordance with
Section 39.051 of the Utilities Code and approved by the PUCT at its open
meeting on December 1, 2000 (Docket No. 21956).

     1.6 CHOICE DATE. "Choice Date" shall mean January 1, 2002, or such other
date as may be fixed by the PUCT for the commencement of customer retail
electric choice in the area served by REI's retail electric business.

     1.7 CODE. "Code" means the Internal Revenue Code of 1986, as amended from
time to time.

     1.8 COMMISSION. "Commission" means the Securities and Exchange Commission.

     1.9 CUSTOMER CARE LLC. "Customer Care LLC" means Reliant Energy Customer
Care Services LLC, a Delaware limited liability company all of the membership
interests in which are owned by Retail Holdings LLC.

     1.10 DISTRIBUTION. The "Distribution" has the meaning set forth in the
Recitals hereof.

     1.11 DISTRIBUTION AGENT. "Distribution Agent" has the meaning set forth in
Section 7.1.

                                       2
<PAGE>   9

     1.12 DISTRIBUTION DATE. "Distribution Date" has the meaning set forth in
Section 7.1.

     1.13 EXCHANGE ACT. "Exchange Act" means the Securities Exchange Act of
1934, as amended.

     1.14 FINAL ORDER. Unless the context requires otherwise, "Final Order,"
"Order," "Injunction," "Decree," "Legal Restraint," "Prohibition," "Writ" or
other words of similar import shall mean final adjudication by a court or
regulatory agency that is no longer subject to rehearing or appeal.

     1.15 GENCO ASSETS. "Genco Assets" means all of the generation assets (as
that term is defined in Section 39.251(3) of the Utilities Code) of the Reliant
Energy HL&P Division of REI. The Genco Assets shall include, without limitation,
the generation plants and other assets set forth in Schedule 1.15 and contract
and permit rights associated with those generation plants. The methodology for
determining the demarcation between Genco Assets and transmission and
distribution assets is set forth in Section D of the Business Separation Plan.

     1.16 GENCO BUSINESS. "Genco Business" shall mean the electric generation
business and operations conducted with the Genco Assets.

     1.17 GENCO; GENCO INC. "Genco Inc." means the corporation to which the
membership interests in Genco GP LLC and Genco LP LLC will be contributed as
provided in Section 8.4. Genco means Genco Inc. or Genco LP, as the context may
require.

     1.18 GENCO LIABILITIES. "Genco Liabilities" shall mean (without
duplication)

          (i) any and all Liabilities under contracts for the purchase of fuel,
     equipment or other goods and services for use in the Genco Business;

          (ii) any and all Liabilities that are expressly contemplated by this
     Agreement or any Ancillary Agreement as Liabilities to be assumed by Genco
     LP, including Liabilities under the Technical Services Agreement and the
     contracts, agreements and permits included in the Genco Assets;

          (iii) all Liabilities (other than Taxes based on, or measured by
     reference to, net income), primarily relating to, arising out of, or
     resulting from:

               (A) the operation of the Genco Business, as conducted at any time
          prior to, on or after, the Genco Organization Date (including any
          Liability relating to, arising out of or resulting from any act or
          failure to act by any director, officer, employee, agent or
          representative (whether or not such act or failure to act is or was
          within such Person's authority));

               (B) the operation of any business conducted by Genco at any time
          after the Genco Organization Date (including any Liability relating
          to, arising out of or resulting from any act or failure to act by any
          director, officer, employee, agent or representative (whether or not
          such act or failure to act is or was within such Person's authority));
          or

                                       3
<PAGE>   10

               (C) the ownership or use of the Genco Assets.

     1.19 GENCO LP. "Genco LP" means a yet-to-be formed limited partnership,
being the limited partnership to which the Genco Assets will be transferred as
provided in Section 8.1.

     1.20 GENCO OPTION. "Genco Option" means the "Option" as defined in the
Genco Option Agreement.

     1.21 GENCO OPTION AGREEMENT. "Genco Option Agreement" means the Texas Genco
Option Agreement dated as of December 31, 2000 between REI and Resources.

     1.22 GENCO ORGANIZATION DATE. "Genco Organization Date" means the date on
which the Genco Assets are contributed to Genco LP as provided in Section 8.1.

     1.23 GENCO PUBLIC OWNERSHIP EVENT. "Genco Public Ownership Event" has the
meaning assigned to that term in the Genco Option Agreement.

     1.24 GOVERNMENTAL APPROVALS. "Governmental Approvals" means any notices,
reports or other filings to be made, or any consents, registrations, approvals,
permits or authorizations to be obtained from, any Governmental Authority.

     1.25 GOVERNMENTAL AUTHORITY. "Governmental Authority" shall mean any
federal, state, local, foreign or international court, government, department,
commission, board, bureau, agency, official or other regulatory, administrative
or governmental authority.

     1.26 GROUP. "Group" means either of the REI Group or the Resources Group,
as the context requires.

     1.27 HOLDING COMPANY RESTRUCTURING. "Holding Company Restructuring" means
the corporate restructuring consisting of the transactions set forth in Section
6.2, as such transactions may be modified at the election of REI as contemplated
by Section 6.5.

     1.28 INDEBTEDNESS. "Indebtedness" of any Person means, (a) all obligations
of such Person for borrowed money, (b) all obligations of such Person evidenced
by bonds, debentures, notes or similar instruments, (c) all obligations of such
Person upon which interest charges are customarily paid, (d) all obligations of
such Person under conditional sale or other title retention agreements relating
to property or assets purchased by such Person, (e) all obligations of such
Person issued or assumed as the deferred purchase price of property or services,
(f) all Indebtedness of others secured by (or for which the holder of such
Indebtedness has an existing right, contingent or otherwise, to be secured by)
any mortgage, lien, pledge, or other encumbrance on property owned or acquired
by such Person, whether or not the obligations secured thereby have been
assumed, (g) all guarantees by such Person of Indebtedness of others, (h) all
capital lease obligations of such Person, and (i) all securities or other
similar instruments convertible or exchangeable into any of the foregoing, but
excluding daily cash overdrafts associated with routine cash operations.

     1.29 INDEMNIFYING PARTY. "Indemnifying Party" has the meaning set forth in
Section 3.4(a).

                                       4
<PAGE>   11

     1.30 INDEMNITEE. "Indemnitee" shall have the meaning set forth in Section
3.4(a).

     1.31 INFORMATION. "Information" means information, whether or not
patentable or copyrightable, in written, oral, electronic or other tangible or
intangible forms, stored in any medium, including studies, reports, records,
books, contracts, instruments, surveys, discoveries, ideas, concepts, know-how,
techniques, designs, specifications, drawings, blueprints, diagrams, models,
prototypes, samples, flow charts, data, computer data, disks, diskettes, tapes,
computer programs or other software, marketing plans, customer names,
communications by or to attorneys (including attorney-client privileged
communications), memos and other materials prepared by attorneys or under their
direction (including attorney work product), and other technical, financial,
employee or business information or data.

     1.32 INSURANCE PROCEEDS. "Insurance Proceeds" means those monies:

          (a) received by an insured from an insurance carrier; or

          (b) paid by an insurance carrier on behalf of the insured;

in any such case net of any applicable premium adjustments (including reserves
and retrospectively rated premium adjustments) and net of any costs or expenses
(including allocated costs of in-house counsel and other personnel) incurred in
the collection thereof.

     1.33 IPO. "IPO" has the meaning set forth in the Recitals hereof.

     1.34 IPO CLOSING DATE. "IPO Closing Date" means the first date on which the
proceeds of any sale of Resources Common Stock to the underwriters in the IPO
are received.

     1.35 IPO PROSPECTUS. "IPO Prospectus" means the prospectus included in the
IPO Registration Statement, including any prospectus subject to completion,
final prospectus or any supplement to or amendment of any of the foregoing.

     1.36 IPO REGISTRATION STATEMENT. "IPO Registration Statement" means the
Registration Statement on Form S-1 (Registration No. 333-48038) of Resources
filed with the Commission pursuant to the Securities Act of 1933, as amended,
registering the shares of Resources Common Stock to be issued in the IPO,
together with all amendments thereto.

     1.37 LIABILITIES. "Liabilities" shall mean any and all Indebtedness,
liabilities and obligations, whether accrued, fixed or contingent, mature or
inchoate, known or unknown, reflected on a balance sheet or otherwise,
including, but not limited to, those arising under any law, rule, regulation,
Action, order, injunction or consent decree of any Governmental Authority or any
judgment of any court of any kind or any award of any arbitrator of any kind,
and those arising under any contract, commitment or undertaking.

     1.38 LOSSES. "Losses" shall mean any and all damages, losses, deficiencies,
Liabilities, obligations, penalties, judgments, settlements, claims, payments,
fines, interest costs and expenses (including, without limitation, the costs and
expenses of any and all Actions and demands, assessments, judgments, settlements
and compromises relating thereto and the costs and expenses of attorneys',
accountants', consultants' and other professionals' fees and expenses

                                       5
<PAGE>   12

incurred in the investigation or defense thereof or the enforcement of rights
hereunder), including direct and consequential damages, but excluding punitive
damages (other than punitive damages awarded to any third party against an
Indemnified Party).

     1.39 MORTGAGE. "Mortgage" means the Mortgage and Deed of Trust dated
November 1, 1944 between Houston Lighting & Power Company and The Chase
Manhattan Bank (successor to South Texas Commercial National Bank of Houston) as
Trustee, as amended and supplemented.

     1.40 MRT ENERGY MARKETING ASSETS AND LIABILITIES. "MRT Energy Marketing
Assets" shall mean the assets identified or described in Schedule 1.40 and "MRT
Energy Marketing Liabilities" shall mean the liabilities identified or described
in that Schedule.

     1.41 NYSE. "NYSE" means the New York Stock Exchange.

     1.42 PERSON. "Person" means an individual, a partnership, a corporation, a
limited liability company, an association, a joint stock company, a trust, a
joint venture, an unincorporated organization and a governmental entity or any
department, agency or political subdivision thereof.

     1.43 PUCT. "PUCT" means the Public Utility Commission of Texas.

     1.44 RECI. "RECI" means Reliant Energy Communications, Inc., a Delaware
corporation all of the stock of which is owned by REI.

     1.45 RECORD DATE. "Record Date" means the close of business on the date to
be determined by the Board of Directors of REI as the record date for
determining the shareholders of REI entitled to receive shares of common stock
of Resources in the Distribution.

     1.46 REGCO. "Regco" means Reliant Energy Regco, Inc., a Texas or Delaware
corporation, the corporation organized by REI and, by means of a merger of a
wholly owned subsidiary of Regco with and into REI, that will become a holding
company for REI's regulated businesses, as described in Section 6.2; provided,
however, that if any provision of this Agreement referring to Regco applies at a
time when Regco has not become such a holding company, references to Regco in
such provision shall be deemed to refer to REI or the ultimate parent entity of
REI, as the case may be.

     1.47 REGULATED RETAIL ASSETS. "Regulated Retail Assets" shall mean the
assets identified or described in Schedule 1.47.

     1.48 REGULATED RETAIL BUSINESS. "Regulated Retail Business" shall mean the
businesses identified or described in Schedule 1.48.

     1.49 REGULATED RETAIL LIABILITIES. "Regulated Retail Liabilities" shall
mean (without duplication), any and all Liabilities, whether arising before or
after the Separation Date, of REI or its Subsidiaries or any of their
predecessor companies or businesses, including any employee-related Liabilities,
primarily relating to, arising out of or resulting from the ownership or use of
the Regulated Retail Assets or the operations or conduct of the Regulated Retail
Business

                                       6
<PAGE>   13

(including any such Liability relating to, arising out of or resulting from any
act or failure to act by any director, officer, employee, agent or
representative (whether or not such act or failure to act is or was within such
Person's authority)).

     1.50 REGULATORY PROCEEDINGS. "Regulatory Proceedings" shall mean filings,
notices, adjudicatory proceedings, rulemakings, enforcement actions before an
agency or in court relative to regulatory activity, and any other proceedings at
or before any regulatory or administrative agency. The term shall also refer to
appellate activities relative to any of the foregoing, including actions seeking
injunctions, writs of mandamus and appeals.

     1.51 REI'S AUDITORS. "REI's Auditors" means REI's independent certified
public accountants.

     1.52 REI BUSINESS. "REI Business" means any business of REI and its
Subsidiaries other than the Resources Business.

     1.53 REI GROUP. "REI Group" means REI, each Subsidiary of REI (other than
any member of the Resources Group) immediately after the Separation Date,
including the Subsidiaries set forth in Schedule 1.53, and each Person that
becomes a Subsidiary of REI after the Separation Date. After the Holding Company
Restructuring, references to the REI Group shall also include Regco and each
Subsidiary of Regco (other than any member of the Resources Group).
Notwithstanding anything herein to the contrary, after the closing of the
exercise of the Genco Option, the REI Group shall not include Genco Inc. or any
Subsidiary of Genco Inc.

     1.54 REI INDEMNITEES. "REI Indemnitees" has the meaning assigned to that
term in Section 3.2.

     1.55 REPG. "REPG" means Reliant Energy Power Generation, Inc. ("REPG"), a
Delaware corporation all of the stock of which is owned by REI.

     1.56 RERC. "RERC" means Reliant Energy Resources Corp., a Delaware
corporation all of the stock of which is owned by REI.

     1.57 RES. "RES" means Reliant Energy Services, Inc., a Delaware corporation
all of the stock of which is owned by RERC.

     1.58 RESOURCES AUDITORS. "Resources Auditors" means Resources' independent
certified public accountants.

     1.59 RESOURCES BALANCE SHEET. "Resources Balance Sheet" means the combined
balance sheet of Resources and affiliates as of September 30, 2000.

     1.60 RESOURCES BUSINESS. "Resources Business" means (a) the business and
operations conducted by Resources and its Subsidiaries after giving effect to
the transactions described in Article II, as described in the caption "Our
Business" in the IPO Prospectus, and including without limitation the following
assets and operations conducted by REI and its Subsidiaries prior to the
Separation:

                                       7
<PAGE>   14

          (i) the non-Reliant Energy HL&P power generation assets and related
     energy trading, marketing and risk management operations in North America
     and Europe;

          (ii) the retail electric operations; and

          (iii) the eBusiness group, the communications business and venture
     capital operations,

and (b) except as otherwise specifically provided herein, any terminated,
divested or discontinued business or operations that at the time of termination,
divestiture or discontinuation related primarily to the Resources Business as
then conducted.

     1.61 RESOURCES COMMON STOCK. "Resources Common Stock" means the Common
Stock, par value $.001 per share, of Resources.

     1.62 RESOURCES DEBT OBLIGATIONS. "Resources Debt Obligations" means all
Indebtedness of Resources or any other member of the Resources Group, excluding
all Indebtedness of any member of the REI Group to the extent it constitutes
Indebtedness of Resources by virtue of clause (f) or clause (g) of the
definition of Indebtedness. Resources Debt Obligations shall include, as of the
date of the most recent balance sheet of Resources included in the IPO
Prospectus, the Indebtedness of Resources reflected on such balance sheet.

     1.63 RESOURCES EXCLUDED LIABILITIES. "Resources Excluded Liabilities" shall
mean any and all Liabilities that are expressly contemplated by this Agreement
or any Ancillary Agreement as Liabilities to be retained or assumed by REI or
any other member of the REI Group, and all agreements and obligations of any
member of the REI Group under this Agreement or any of the Ancillary Agreements.

     1.64 RESOURCES GROUP. "Resources Group" means Resources, each Subsidiary of
Resources immediately after the Separation Date, including the Subsidiaries set
forth in Schedule 1.64, and each Person that becomes a Subsidiary of Resources
after the Separation Date.

     1.65 RESOURCES INDEMNITEES. "Resources Indemnitees" has the meaning
assigned to that term in Section 3.3.

     1.66 RESOURCES LIABILITIES. "Resources Liabilities" shall mean (without
duplication):

          (i) any and all Liabilities that are expressly contemplated by this
     Agreement or any Ancillary Agreement to be assumed by Resources or any
     member of the Resources Group, and all agreements, obligations and
     Liabilities of any member of the Resources Group under this Agreement or
     any of the Ancillary Agreements;

          (ii) all Liabilities (other than Taxes based on, or measured by
     reference to, net income) primarily relating to, arising out of or
     resulting from:

                                       8
<PAGE>   15

               (A) the operation of the Resources Business, as conducted at any
          time prior to, on or after the IPO Closing Date (including any
          Liability relating to, arising out of or resulting from any act or
          failure to act by any director, officer, employee, agent or
          representative (whether or not such act or failure to act is or was
          within such Person's authority));

               (B) the operation of any business conducted at any time after the
          IPO Closing Date by any member of the Resources Group (including any
          Liability relating to, arising out of or resulting from any act or
          failure to act by any director, officer, employee, agent or
          representative (whether or not such act or failure to act is or was
          within such Person's authority));

               (C) any Resources Assets; or

               (D) the Resources Debt Obligations;

     and in any case whether arising before, on or after the IPO Closing Date;
and

          (iii) all Liabilities reflected as liabilities or obligations of
     Resources in the Resources Balance Sheet, subject to any discharge of such
     Liabilities subsequent to the date of the Resources Balance Sheet.

Notwithstanding the foregoing, the Resources Liabilities shall not include the
Resources Excluded Liabilities.

     1.67 RESOURCES RIGHTS PLAN. "Resources Rights Plan" shall mean the
stockholders rights plan of Resources as evidenced by the Rights Agreement,
dated as of January 15, 2001, by and among Resources and The Chase Manhattan
Bank, as Rights Agent.

     1.68 RETAIL ELECTRIC PROVIDER LLC. "Retail Electric Provider LLC" means
Reliant Energy Retail Services LLC, a Delaware limited liability company all of
the membership interests in which are owned by Retail Holdings LLC.

     1.69 RETAIL HOLDINGS LLC. "Retail Holdings LLC" means Reliant Energy Retail
Holdings LLC, a Delaware limited liability company all of the membership
interests in which are owned by REI.

     1.70 SEPARATION. "Separation" means the transfer of the Resources Business
to Resources and its Subsidiaries and the assumption by Resources and its
Subsidiaries of the Resources Liabilities, all as more fully described in this
Agreement and the Ancillary Agreements.

     1.71 SEPARATION DATE. "Separation Date" has the meaning set forth in
Section 2.1 hereof.

     1.72 SUBSIDIARY. A "Subsidiary" of any Person means any corporation or
other organization whether incorporated or unincorporated of which at least a
majority of the securities or interests having by the terms thereof ordinary
voting power to elect at least a majority of the

                                       9
<PAGE>   16

board of directors or others performing similar functions with respect to such
corporation or other organization is directly or indirectly owned or controlled
by such Person or by any one or more of its Subsidiaries, or by such Person and
one or more of its Subsidiaries.

     1.73 TAXES. "Taxes" has the meaning set forth in the Tax Allocation
Agreement.

     1.74 TAX ALLOCATION AGREEMENT. "Tax Allocation Agreement" means the Tax
Allocation Agreement dated as of December 31, 2000 between REI and Resources.

     1.75 THIRD PARTY CLAIM. "Third Party Claim" has the meaning set forth in
Section 3.5(a).

     1.76 UNDERWRITERS. "Underwriters" means the underwriters named in the
Underwriting Agreement.

     1.77 UNDERWRITING AGREEMENT. "Underwriting Agreement" has the meaning set
forth in Section 4.1(b) hereof.

     1.78 UNREGULATED RETAIL ASSETS. "Unregulated Retail Assets" shall mean the
assets identified or described in Schedule 1.78.

     1.79 UNREGULATED RETAIL BUSINESS. "Unregulated Retail Business" shall mean
the businesses identified or described in Schedule 1.79.

     1.80 UNREGULATED RETAIL LIABILITIES. "Unregulated Retail Liabilities" shall
mean (without duplication), any and all Liabilities, whether arising before or
after the Separation Date, of REI or its Subsidiaries or any of their
predecessor companies or businesses, including any employee-related Liabilities,
primarily relating to, arising out of or resulting from the ownership or use of
the Unregulated Retail Assets or the operations or conduct of the Unregulated
Retail Business (including any such Liability relating to, arising out of or
resulting from any act or failure to act by any director, officer, employee,
agent or representative (whether or not such act or failure to act is or was
within such Person's authority).

     1.81 UTILITIES CODE. "Utilities Code" means the Utilities Code of Texas.

                                   ARTICLE II

                                   SEPARATION

     2.1 SEPARATION DATE. Unless otherwise provided in this Agreement, or in any
agreement to be executed in connection with this Agreement, the effective time
and date of each action in connection with the Separation shall be as of 11:59
p.m., Houston Time, December 31, 2000 or such other date as may be fixed by REI
(the "Separation Date").

                                       10
<PAGE>   17

     2.2 RESTRUCTURING TRANSACTIONS. In order to effect the Separation, REI will
take, or cause to be taken, the following actions:

          (a) REI will transfer the Regulated Retail Assets to Resources and
Resources will assume the Regulated Retail Liabilities.

          (b) Resources will transfer the Regulated Retail Assets to Retail
Holdings LLC and Retail Holdings LLC will assume the Regulated Retail
Liabilities.

          (c) Retail Holdings LLC will transfer the Regulated Retail Assets to
Customer Care LLC and Customer Care LLC will assume the Regulated Retail
Liabilities.

          (d) REI will transfer the Unregulated Retail Assets to Resources and
Resources will assume the Unregulated Retail Liabilities.

          (e) Resources will transfer the Unregulated Retail Assets to Retail
Holdings LLC and Retail Holdings LLC will assume the Unregulated Retail
Liabilities.

          (f) Retail Holdings LLC will transfer the Unregulated Retail Assets to
Retail Electric Provider LLC and Retail Electric Provider LLC will assume the
Unregulated Retail Liabilities.

          (g) RERC will transfer to Resources the stock of each of its
Subsidiaries listed on Schedule 2.2(g) in exchange for the consideration listed
on Schedule 2.2(g).

          (h) REI will contribute to Resources, as a contribution to capital,
(i) all of the stock of REPG, (ii) all of the stock of RECI, and (iii) all of
the stock and membership interests of each of its Subsidiaries listed on
Schedule 2.2(h).

          (i) RES will contribute the MRT Energy Marketing Assets to the capital
of MRT Energy Marketing Company and MRT Energy Marketing Company will assume the
MRT Energy Marketing Liabilities.

          (j) RES will distribute to RERC all of the stock of MRT Energy
Marketing Company.

          (k) A newly formed wholly owned subsidiary of Resources will merge
with and into RES, with the result that RES will survive the merger as a wholly
owned subsidiary of Resources and RERC will receive cash in exchange for all of
the stock of RES.

          (l) REI will contribute to Resources the Genco Option, and in that
connection REI and Resources will execute and deliver the Genco Option
Agreement.

          (m) REI will contribute to Resources, as a contribution to capital,
the assets listed in Schedule 2.2 (m).

     2.3 RELEASE FROM MORTGAGE, ETC. REI shall obtain such releases from the
Mortgage as may be necessary for the transfers referred to in Section 2.2(a) and
Section 2.2(c).

                                       11
<PAGE>   18

     2.4 INSTRUMENTS OF TRANSFER AND ASSUMPTION. REI and Resources agree that
(a) transfers of the Regulated Retail Assets, the Unregulated Retail Assets and
all other assets required to be transferred by this Agreement shall be effected
by delivery by REI or the other transferring entity, as applicable, to the
transferee, of (i) with respect to those assets that constitute stock,
certificates endorsed in blank or evidenced or accompanied by stock powers or
other instruments of transfer endorsed in blank, against receipt, (ii) with
respect to any real property interest or any improvements thereon, a general
warranty deed with general warranty of limited application limiting recourse and
remedies to title insurance and warranties by predecessors in title to REI, and
(iii) with respect to all other Assets, such good and sufficient instruments of
contribution, conveyance, assignment and transfer, in form and substance
reasonably satisfactory to REI and Resources, as shall be necessary to vest in
the designated transferee, all of the title and ownership interest of the
transferor in and to any such Asset, and (b) to the extent necessary, the
assumption of the Liabilities contemplated pursuant to Section 2.2 hereof shall
be effected by delivery by the transferee to the transferor of such good and
sufficient instruments of assumption, in form and substance reasonably
satisfactory to REI and Resources, as shall be necessary for the assumption by
the transferee of such Liabilities. Each of the parties hereto also agrees to
deliver to any other party hereto such other documents, instruments and writings
as may be reasonably requested by such other parties hereto in connection with
the transactions contemplated hereby. Notwithstanding any other provisions of
this Agreement to the contrary, (x) THE TRANSFERS AND ASSUMPTIONS REFERRED TO IN
THIS ARTICLE II WILL BE MADE WITHOUT ANY REPRESENTATION OR WARRANTY OF ANY
NATURE (a) AS TO THE VALUE OR FREEDOM FROM ENCUMBRANCE OF, ANY ASSETS, (b) AS TO
ANY WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE
OF, OR ANY OTHER MATTER CONCERNING, ANY ASSETS OR (c) AS TO THE LEGAL
SUFFICIENCY TO CONVEY TITLE TO ANY ASSETS, and (y) the instruments of transfer
or assumption referred to in this Section 2.4 shall not include any
representations and warranties other than as specifically provided herein. REI
and Resources hereby acknowledge and agree that ALL ASSETS ARE BEING TRANSFERRED
"AS IS, WHERE IS."

     2.5 AGREEMENTS. On the Separation Date, or as soon as practicable after the
Separation Date, REI and Resources shall execute and deliver (or shall cause
their appropriate Subsidiaries to execute and deliver, as applicable) the
agreements between them designated as follows:

               (i)    the Transition Services Agreement,

               (ii)   the Employee Matters Agreement,

               (iii)  the Tax Allocation Agreement,

               (iv)   the Retail Agreement,

               (v)    the Genco Option Agreement,

               (vi)   the Technical Services Agreement,

               (vii)  the Registration Rights Agreement,

                                       12
<PAGE>   19

               (viii) the Miscellaneous Transition Matters Agreement,

               (ix)   the REP Lease,

               (x)    the EDC Lease,

               (xi)   the EC/DC Lease,

               (xii)  the Innovative Business Solutions Center Lease,

               (xiii) the Dark Fiber Lease Agreement,

               (xiv)  the Fiber Optics Operation and Maintenance Agreement,

               (xv)   the Intellectual Property Agreement, and

               (xvi) such other agreements, documents or instruments as the
                     parties may agree are necessary or desirable and which
                     specifically state that they are Ancillary Agreements
                     within the meaning of this Agreement

(collectively, the "Ancillary Agreements"). To the extent such documents are not
executed and delivered on the Separation Date, they shall be executed and
delivered as soon as practicable thereafter and (except as otherwise provided
therein) shall be effective as of the Separation Date.

                                  ARTICLE III

                        MUTUAL RELEASES; INDEMNIFICATION

     3.1 RELEASE OF PRE-CLOSING CLAIMS.

          (a) Except as provided in Section 3.1(c), effective as of the IPO
Closing Date, Resources does hereby, for itself and each other member of the
Resources Group, their respective Affiliates (other than any member of the REI
Group), successors and assigns, and all Persons who at any time prior to the IPO
Closing Date have been shareholders, directors, officers, agents or employees of
any member of the Resources Group (in each case, in their respective capacities
as such), remise, release and forever discharge REI, each member of the REI
Group and their respective Affiliates (other than any member of the Resources
Group), successors and assigns, and all Persons who at any time prior to the IPO
Closing Date have been shareholders, directors, officers, agents or employees of
any member of the REI Group (in each case, in their respective capacities as
such), and their respective heirs, executors, administrators, successors and
assigns, from any and all Liabilities whatsoever to Resources and each other
member of the Resources Group, whether at law or in equity (including any right
of contribution), whether arising under any contract or agreement, by operation
of law or otherwise, existing or arising from any acts or events occurring or
failing to occur or alleged to have occurred or to have failed to occur or any
conditions existing or alleged to have existed on or before the IPO Closing
Date, including in connection with the transactions and all other activities to
implement any of the Separation, the IPO, the Restructuring and the
Distribution.

                                       13
<PAGE>   20

          (b) Except as provided in Section 3.1(c), effective as of the IPO
Closing Date, REI does hereby, for itself and each other member of the REI
Group, their respective Affiliates (other than any member of the Resources
Group), successors and assigns, and all Persons who at any time prior to the IPO
Closing Date have been shareholders, directors, officers, agents or employees of
any member of the REI Group (in each case, in their respective capacities as
such), remise, release and forever discharge Resources, each member of the
Resources Group, and their respective Affiliates (other than any member of the
REI Group), successors and assigns, and all Persons who at any time prior to the
IPO Closing Date have been shareholders, directors, officers, agents or
employees of any member of the Resources Group (in each case, in their
respective capacities as such), and their respective heirs, executors,
administrators, successors and assigns, from any and all Liabilities whatsoever
to REI and each other member of the REI Group, whether at law or in equity
(including any right of contribution), whether arising under any contract or
agreement, by operation of law or otherwise, existing or arising from any acts
or events occurring or failing to occur or alleged to have occurred or to have
failed to occur or any conditions existing or alleged to have existed on or
before the IPO Closing Date, including in connection with the transactions and
all other activities to implement any of the Separation, the IPO, the
Restructuring and the Distribution.

          (c) Nothing contained in Section 3.1(a) or (b) shall impair any right
of any Person to enforce this Agreement, any Ancillary Agreement or any
agreements, arrangements, commitments or understandings that are specified in
this Agreement or in any Ancillary Agreement. Nothing contained in Section
3.1(a) or (b) shall release any Person from:

               (i) any Liability, contingent or otherwise, assumed, transferred,
          assigned or allocated to the Group of which such Person is a member in
          accordance with, or any other Liability of any member of any Group
          under, this Agreement or any Ancillary Agreement;

               (ii) any Liability for the sale, lease, construction or receipt
          of goods, property or services purchased, obtained or used in the
          ordinary course of business by a member of one Group from a member of
          any other Group prior to the IPO Closing Date;

               (iii) any Liability for unpaid amounts for products or services
          or refunds owing on products or services due on a value-received basis
          for work done by a member of one Group at the request or on behalf of
          a member of another Group;

               (iv) any Liability that the parties may have with respect to
          indemnification or contribution pursuant to this Agreement for claims
          brought against the parties by third Persons, which Liability shall be
          governed by the provisions of this Article III and, if applicable, the
          appropriate provisions of the Ancillary Agreements; or

               (v) any Liability the release of which would result in the
          release of any Person other than a Person released pursuant to this
          Section 3.1; provided that the parties agree not to bring suit or
          permit any of their Subsidiaries to bring suit

                                       14
<PAGE>   21

          against any Person with respect to any Liability to the extent that
          such Person would be released with respect to such Liability by this
          Section 3.1 but for the provisions of this clause (v).

          (d) Resources shall not make, and shall not permit any member of the
Resources Group to make, any claim or demand, or commence any Action asserting
any claim or demand, including any claim of contribution or any indemnification,
against REI or any member of the REI Group, or any other Person released
pursuant to Section 3.1(a), with respect to any Liabilities released pursuant to
Section 3.1(a). REI shall not make, and shall not permit any member of the REI
Group to make, any claim or demand, or commence any Action asserting any claim
or demand, including any claim of contribution or any indemnification, against
Resources or any member of the Resources Group, or any other Person released
pursuant to Section 3.1(b), with respect to any Liabilities released pursuant to
Section 3.1(b).

          (e) It is the intent of each of REI and Resources by virtue of the
provisions of this Section 3.1 to provide for a full and complete release and
discharge of all Liabilities existing or arising from all acts and events
occurring or failing to occur or alleged to have occurred or to have failed to
occur and all conditions existing or alleged to have existed on or before the
IPO Closing Date, between or among Resources or any member of the Resources
Group, on the one hand, and REI or any member of the REI Group, on the other
hand (including any contractual agreements or arrangements existing or alleged
to exist between or among any such members on or before the IPO Closing Date),
except as expressly set forth in Section 3.1(c). At any time, at the request of
any other party, each party shall cause each member of its respective Group to
execute and deliver releases reflecting the provisions hereof.

     3.2 INDEMNIFICATION BY RESOURCES. Except as provided in Section 3.4,
Resources shall, and in the case of clauses (a), (b) and (c) below shall in
addition cause the Appropriate Member of the Resources Group to, indemnify,
defend and hold harmless REI, each member of the REI Group and each of their
respective directors, officers and employees, and each of the heirs, executors,
successors and assigns of any of the foregoing (collectively, the "REI
Indemnitees") from and against any and all Losses of the REI Indemnitees
relating to, arising out of or resulting from any of the following (without
duplication):

          (a) the failure of Resources or any other member of the Resources
Group or any other Person to pay, perform or otherwise promptly discharge any
Resources Liabilities in accordance with their respective terms, whether prior
to or after the IPO Closing Date or the date thereof;

          (b) the Resources Business or any Resources Liability;

          (c) any breach by Resources or any member of the Resources Group of
this Agreement or any of the Ancillary Agreements; and

          (d) any untrue statement or alleged untrue statement of a material
fact or omission or alleged omission to state a material fact required to be
stated therein or necessary to make the statements therein not misleading, with
respect to all information contained in the IPO

                                       15
<PAGE>   22

Registration Statement or any IPO Prospectus (other than information regarding
REI provided by REI to Resources for inclusion in the IPO Registration Statement
or any IPO Prospectus).

As used in this Section 3.2, "Appropriate Member of the Resources Group" means
the member or members of the Resources Group, if any, whose acts, conduct or
omissions or failures to act caused, gave rise to or resulted in the loss from
and against which indemnity is provided.

     3.3 INDEMNIFICATION BY REI. Except as provided in Section 3.4, REI shall,
and in the case of clauses (a), (b) and (c) below shall in addition cause the
Appropriate Member of the REI Group to, indemnify, defend and hold harmless
Resources, each member of the Resources Group and each of their respective
directors, officers and employees, and each of the heirs, executors, successors
and assigns of any of the foregoing (collectively, the "Resources Indemnitees")
from and against any and all Losses of the Resources Indemnitees relating to,
arising out of or resulting from any of the following (without duplication):

          (a) the failure of REI or any other member of the REI Group or any
other Person to pay, perform or otherwise promptly discharge any Liabilities of
any member of the REI Group other than the Resources Liabilities, in accordance
with their respective terms, whether prior to or after the IPO Closing Date or
the date hereof;

          (b) the REI Business or any Liability of any member of the REI Group
other than the Resources Liabilities;

          (c) any breach by REI or any member of the REI Group of this Agreement
or any of the Ancillary Agreements; and

          (d) any untrue statement or alleged untrue statement of a material
fact or omission or alleged omission to state a material fact required to be
stated therein or necessary to make the statements therein not misleading, with
respect to information regarding REI provided by REI to Resources for inclusion
in the IPO Registration Statement or any IPO Prospectus.

As used in this Section 3.3, "Appropriate Member of the REI Group" means the
member or members of the REI Group, if any, whose acts, conduct or omissions or
failures to act caused, gave rise to or resulted in the Loss from and against
which indemnity is provided.

     3.4 INDEMNIFICATION OBLIGATIONS NET OF INSURANCE PROCEEDS AND OTHER
AMOUNTS. (a) The parties intend that any Loss subject to indemnification or
reimbursement pursuant to this Article III will be net of Insurance Proceeds
that actually reduce the amount of the Loss. Accordingly, the amount which any
party (an "Indemnifying Party") is required to pay to any Person entitled to
indemnification hereunder (an "Indemnitee") will be reduced by any Insurance
Proceeds theretofore actually recovered by or on behalf of the Indemnitee in
reduction of the related Loss. If an Indemnitee receives a payment (an
"Indemnity Payment") required by this Agreement from an Indemnifying Party in
respect of any Loss and subsequently receives Insurance Proceeds, then the
Indemnitee will pay to the Indemnifying Party an amount equal to the excess of
the Indemnity Payment received over the amount of the Indemnity Payment that
would have been due if the Insurance Proceeds recovery had been received,
realized or recovered before the Indemnity Payment was made.

                                       16
<PAGE>   23

          (b) An insurer who would otherwise be obligated to pay any claims
shall not be relieved of the responsibility with respect thereto or, solely by
virtue of the indemnification provisions hereof, have any subrogation rights
with respect thereto, it being expressly understood and agreed that no insurer
or any other third party shall be entitled to a "windfall" (i.e., a benefit they
would not be entitled to receive in the absence of the indemnification
provisions) by virtue of the indemnification provisions hereof. Nothing
contained in this Agreement or any Ancillary Agreement shall obligate any member
of any Group to seek to collect or recover any Insurance Proceeds.

     3.5 PROCEDURES FOR INDEMNIFICATION OF THIRD PARTY CLAIMS. (a) If an
Indemnitee shall receive notice or otherwise learn of the assertion by a Person
(including any Governmental Authority) who is not a member of the REI Group or
the Resources Group of any claims or of the commencement by any such Person of
any Action (collectively, a "Third Party Claim") with respect to which an
Indemnifying Party may be obligated to provide indemnification to such
Indemnitee pursuant to Section 3.2 or 3.3, or any other Section of this
Agreement or any Ancillary Agreement, such Indemnitee shall give such
Indemnifying Party written notice thereof within 20 days after becoming aware of
such Third Party Claim. Any such notice shall describe the Third Party Claim in
reasonable detail. Notwithstanding the foregoing, the failure of any Indemnitee
or other Person to give notice as provided in this Section 3.5(a) shall not
relieve the related Indemnifying Party of its obligations under this Article
III, except to the extent that such Indemnifying Party is actually prejudiced by
such failure to give notice.

          (b) An Indemnifying Party may elect to defend (and, unless the
Indemnifying Party has specified any reservations or exceptions, to seek to
settle or compromise), at such Indemnifying Party's own expense and by such
Indemnifying Party's own counsel, any Third Party Claim. Within 30 days after
the receipt of notice from an Indemnitee in accordance with Section 3.5(a) (or
sooner, if the nature of such Third Party Claim so requires), the Indemnifying
Party shall notify the Indemnitee of its election whether the Indemnifying Party
will assume responsibility for defending such Third Party Claim, which election
shall specify any reservations or exceptions. After notice from an Indemnifying
Party to an Indemnitee of its election to assume the defense of a Third Party
Claim, such Indemnitee shall have the right to employ separate counsel and to
participate in (but not control) the defense, compromise, or settlement thereof,
but the fees and expenses of such counsel shall be the expense of such
Indemnitee except as set forth in the next sentence. In the event that the
Indemnifying Party has elected to assume the defense of the Third Party Claim
but has specified, and continues to assert, any reservations or exceptions in
such notice, then, in any such case, the reasonable fees and expenses of one
separate counsel for all Indemnitees shall be borne by the Indemnifying Party.

          (c) If an Indemnifying Party elects not to assume responsibility for
defending a Third Party Claim, or fails to notify an Indemnitee of its election
as provided in Section 3.5(b), such Indemnitee may defend such Third Party Claim
at the cost and expense (included allocated costs of in-house counsel and other
personnel) of the Indemnifying Party.

          (d) Unless the Indemnifying Party has failed to assume the defense of
the Third Party Claim in accordance with the terms of this Agreement, no
Indemnitee may settle or compromise any Third Party Claim without the consent of
the Indemnifying Party.

                                       17
<PAGE>   24

          (e) No Indemnifying Party shall consent to entry of any judgment or
enter into any settlement of the Third Party Claim without the consent of an
Indemnitee if the effect thereof is to permit any injunction, declaratory
judgment, other order or other nonmonetary relief to be entered, directly or
indirectly, against such Indemnitee.

          (f) The provisions of Section 3.2 through 3.5 shall not apply to Taxes
(which are covered by the Tax Allocation Agreement).

     3.6 ADDITIONAL MATTERS. (a) Any claim on account of a Loss which does not
result from a Third Party Claim shall be asserted by written notice given by the
Indemnitee to the related Indemnifying Party. Such Indemnifying Party shall have
a period of 30 days after the receipt of such notice within which to respond
thereto. If such Indemnifying Party does not respond within such 30-day period,
such Indemnifying Party shall be deemed to have refused to accept responsibility
to make payment. If such Indemnifying Party does not respond within such 30-day
period or rejects such claim in whole or in part, such Indemnitee shall be free
to pursue such remedies as may be available to such party as contemplated by
this Agreement and the Ancillary Agreements.

          (b) In the event of payment by or on behalf of any Indemnifying Party
to any Indemnitee in connection with any Third Party Claim, such Indemnifying
Party shall be subrogated to and shall stand in the place of such Indemnitee as
to any events or circumstances in respect of which such Indemnitee may have any
right, defense or claim relating to such Third Party Claim against any claimant
or plaintiff asserting such Third Party Claim or against any other person. Such
Indemnitee shall cooperate with such Indemnifying Party in a reasonable manner,
and at the cost and expense (including allocated costs of in-house counsel and
other personnel) of such Indemnifying Party, in prosecuting any subrogated
right, defense or claim.

          (c) In the event of an Action in which the Indemnifying Party is not a
named defendant, if either the Indemnified Party or Indemnifying Party shall so
request, the parties shall endeavor to substitute the Indemnifying Party for the
named defendant, if at all practicable. If such substitution or addition cannot
be achieved for any reason or is not requested, the named defendant shall allow
the Indemnifying Party to manage the Action as set forth in this Section and the
Indemnifying Party shall fully indemnify the named defendant against all costs
of defending the Action (including court costs, sanctions imposed by a court,
attorneys' fees, experts' fees and all other external expenses, and the
allocated costs of in-house counsel and other personnel), the costs of any
judgment or settlement, and the cost of any interest or penalties relating to
any judgment or settlement.

          (D) THE PARTIES UNDERSTAND AND AGREE THAT THE INDEMNIFICATION
OBLIGATIONS HEREUNDER AND UNDER THE ANCILLARY AGREEMENTS MAY INCLUDE
INDEMNIFICATION FOR LOSSES RESULTING FROM, OR ARISING OUT OF, DIRECTLY OR
INDIRECTLY, AN INDEMNIFIED PARTY'S OWN NEGLIGENCE OR STRICT LIABILITY.

     3.7 REMEDIES CUMULATIVE. The remedies provided in this Article III shall be
cumulative and, subject to the provisions of Article IX, shall not preclude
assertion by any

                                       18
<PAGE>   25

Indemnitee of any other rights or the seeking of any and all other remedies
against any Indemnifying Party.

     3.8 SURVIVAL OF INDEMNITIES. The rights and obligations of each REI and
Resources and their respective Indemnitees under this Article III shall survive
the sale or other transfer by any party of any Assets or businesses or the
assignment by it of any Liabilities.

     3.9 INDEMNIFICATION OF DIRECTORS AND OFFICERS. For purpose of Sections 3.2
through 3.8, inclusive, and notwithstanding anything to the contrary contained
herein, Persons who serve on both the Board of Directors of Resources and the
Board of Directors of REI and persons who serve as officers of both Resources
and REI shall be deemed both Resources Indemnitees and REI Indemnitees.

                                   ARTICLE IV

                       THE IPO AND ACTIONS PENDING THE IPO

     4.1 TRANSACTIONS PRIOR TO THE IPO. Subject to the conditions specified in
Section 4.4, REI and Resources shall use their reasonable commercial efforts to
consummate the IPO. Such efforts shall include, but not necessarily be limited
to, those specified in this Section 4.1:

          (a) Resources has filed the IPO Registration Statement, and shall use
its best efforts to cause such IPO Registration Statement to become effective,
including by filing such amendments thereto as may be necessary or appropriate,
responding promptly to any comments of the Commission and taking such other
action in that connection as may be reasonably requested by REI. REI and
Resources shall also cooperate in preparing, filing with the Commission and
causing to become effective a registration statement registering the Resources
Common Stock under the Exchange Act, and any registration statements or
amendments thereof which are required to reflect the establishment of, or
amendments to, any employee benefit and other plans necessary or appropriate in
connection with the IPO, the Separation, the Restructuring, the Distribution or
the other transactions contemplated by this Agreement.

          (b) Resources shall enter into an underwriting agreement with the
underwriters named in the IPO Registration Statement (the "Underwriting
Agreement"), in form and substance reasonably satisfactory to Resources, and
shall comply with its obligations thereunder.

          (c) REI and Resources shall consult with each other and the
Underwriters regarding the timing, pricing and other material matters with
respect to the IPO.

          (d) Resources shall use its reasonable commercial efforts to take all
such action as may be necessary or appropriate under state securities and blue
sky laws of the United States (and any comparable laws under any foreign
jurisdictions) in connection with the IPO.

          (e) Resources shall prepare, file and use reasonable commercial
efforts to seek to make effective, an application for listing of the Resources
Common Stock issued in the IPO on the NYSE, subject to official notice of
issuance.

                                       19
<PAGE>   26

     4.2 USE OF PROCEEDS. Resources shall use the net proceeds from the IPO
(after deduction of all expenses in connection with the IPO payable by Resources
as provided in Section 10.7) initially to increase working capital and as and
when needed to fund capital expenditures, and, depending on the timing of future
acquisitions of generation facilities, may also use a portion of such net
proceeds to finance one or more such acquisitions. Should the net proceeds from
the IPO exceed $1,400,000,000, 50% of the net proceeds above such amount shall
be applied to prepay indebtedness owing from REPG to REI outstanding as of
December 31, 2000 in respect of the indebtedness of Reliant Energy FinanceCo III
LP, including accrued and unpaid interest on the amount so prepaid to the date
of prepayment (the amount thereof to be so prepaid, assuming exercise in full of
any underwriters' overallotment option, being called the "Specified
Indebtedness"). If the net proceeds are sufficient to result in the repayment in
full of all such indebtedness owing from REPG to REI outstanding as of December
31, 2000 in respect of the indebtedness of Reliant Energy FinanceCo III LP in
accordance with the preceding sentence, any excess shall be retained by
Resources.

     4.3 COOPERATION. Resources shall consult with, and cooperate in all
respects with, REI in connection with the pricing of the Resources Common Stock
to be offered in the IPO and shall, at REI's direction, promptly take any and
all actions necessary or desirable to consummate the IPO as contemplated by the
IPO Registration Statement and the Underwriting Agreement.

     4.4 CONDITIONS PRECEDENT TO CONSUMMATION OF THE IPO. As soon as practicable
after the Separation Date, the parties hereto shall use their reasonable
commercial efforts to satisfy the conditions listed below to the consummation of
the IPO. The obligations of the parties to use their reasonable commercial
efforts to consummate the IPO shall be conditioned on the satisfaction, or
waiver by REI, of the following conditions:

          (a) The IPO Registration Statement shall have been filed and declared
effective by the Commission, and there shall be no stop order in effect with
respect thereto.

          (b) The actions and filings with regard to state securities and blue
sky laws of the United States (and any comparable laws under any foreign
jurisdictions) described in Section 4.1(d) shall have been taken and, where
applicable, have become effective or been accepted.

          (c) The Resources Common Stock to be issued in the IPO shall have been
accepted for listing on the NYSE, on official notice of issuance.

          (d) Resources shall have entered into the Underwriting Agreement and
all conditions to the obligations of Resources and the Underwriters shall have
been satisfied or waived.

          (e) REI shall be satisfied in its sole discretion that (1) it will own
more than 80% of the outstanding Resources Common Stock following the IPO, (2)
it will control Resources within the meaning of Section 368(c) of the Code, and
(3) it will satisfy the stock ownership requirements of Section 1504(a)(2) of
the Code with respect to the stock of Resources. All other conditions to permit
the Distribution to qualify as a tax-free distribution to REI, Resources and
REI's shareholders shall, to the extent applicable as of the time of the IPO,

                                       20
<PAGE>   27

be satisfied, and there shall be no event or condition that is likely to cause
any of such conditions not to be satisfied as of the time of the Distribution or
thereafter.

          (f) Any material Governmental Approvals necessary to consummate the
IPO shall have been obtained and be in full force and effect.

          (g) No order, injunction or decree issued by any court or agency of
competent jurisdiction or other legal restraint or prohibition preventing the
consummation of the Separation or the IPO or any of the other transactions
contemplated by this Agreement or any Ancillary Agreement shall be in effect.

          (h) The Separation shall have become effective.

          (i) Such other actions as the parties hereto may, based upon the
advice of counsel, reasonably request to be taken prior to the IPO in order to
assure the successful completion of the IPO shall have been taken.

          (j) This Agreement and all Ancillary Agreements have been executed and
shall not have been terminated.

          (k) A pricing committee designated by the Board of Directors of REI
shall have determined that the terms of the IPO are acceptable to REI.

     4.5 CANCELLATION OF OUTSTANDING INTERCOMPANY INDEBTEDNESS. Prior to the IPO
Closing Date, REI shall convert into a capital contribution, without the
issuance of any additional shares of Resources Common Stock to REI, all
Indebtedness owed by Resources or its Subsidiaries to any member of the REI
Group as of December 31, 2000, including all amounts owed by REPG to REI as of
such date in respect of the indebtedness of Reliant Energy FinanceCo III LP
other than the portion thereof constituting "Specified Indebtedness" as defined
in Section 4.2 but excluding any Indebtedness as of such date consisting of (a)
borrowings made to provide cash collateral for margin obligations of RES and any
replacements or refinancings thereof or (b) reimbursement and other obligations
under letters of credit, surety bonds or similar instruments provided as
security for obligations of RES and its subsidiaries. If the terms of the IPO
include an underwriters' overallotment option and upon the exercise of such
option in full, the total net proceeds from the IPO would exceed $1,400,000,000
(whether or not the total net proceeds would exceed such amount if the option
were not exercised), then

          (a) prior to the IPO Closing Date, no Specified Indebtedness shall be
converted into a capital contribution;

          (b) if and to the extent the overallotment option is exercised, 50% of
the net proceeds attributable to such exercise shall immediately be applied to
the prepayment of any Specified Indebtedness not otherwise prepaid on the IPO
Closing Date; and

          (c) if and to the extent the overallotment option expires or
terminates without being exercised, the entire remaining amount of Specified
Indebtedness not theretofore prepaid shall be converted into a capital
contribution without the issuance of any additional shares of Resources Common
Stock to REI.

                                       21
<PAGE>   28

                                   ARTICLE V

                        CORPORATE GOVERNANCE AND CERTAIN
                      FINANCIAL REPORTING AND OTHER MATTERS

     5.1 CHARTER AND BYLAWS. As of the IPO Closing Date, the Restated
Certificate of Incorporation and Bylaws of Resources shall be in the forms of
Schedule 5.1(a) and 5.1(b), respectively, with such changes therein as may be
agreed to in writing by REI.

     5.2 RIGHTS PLAN AMENDMENTS. Following the Closing Date and for so long as
REI beneficially owns shares representing at least 30% of the voting power of
all of the outstanding shares of Resources Common Stock, without the prior
written consent of REI, Resources shall not amend or modify the Resources Rights
Plan.

     5.3 CHARTER/BYLAW AMENDMENTS. So long as REI owns shares representing 30%
of the voting power of all of the outstanding shares of Resources Common Stock,
Resources will not, without the prior consent of REI, adopt any amendments to
its Restated Certificate of Incorporation or Bylaws or take or recommend to its
stockholders any action during the terms of this Agreement which would (i)
impose limitations on the legal rights of REI or any other member of the REI
Group as a stockholder of Resources other than those imposed pursuant to the
express terms of this Agreement or the form of Resources' Restated Certificate
of Incorporation set forth as Schedule 5.1(a) hereto, including, without
limitation, any action which would impose restrictions (A) based upon the size
of security holding, the business in which a security holder is engaged or other
considerations applicable to REI or any other member of the REI Group and not to
security holders generally, or (B) by means of the issuance of or proposal to
issue any other class of securities having voting power disproportionately
greater than the equity investment in Resources represented by such securities;
(ii) involve the issuance or corporate action providing for the issuance of any
warrant, right capital stock or other security (A) which is, or under specified
circumstances will become, convertible into or represent the right to acquire
any securities of REI or any other member of the REI Group or (B) which is
dependent upon the amount of voting securities owned by REI or any other member
of the REI Group, (iii) deny any benefit to REI or any other member of the REI
Group proportionately as holders of any class of voting securities generally; or
(iv) alter voting or other rights of the holders of any class of voting
securities so that any such rights (or the vote required with respect to any
matter) are determined with reference to the amount of voting securities held by
REI or any other member of the REI Group; provided, that this Section 5.3 shall
not prohibit Resources from adopting the Resources Rights Plan or taking any
action otherwise prohibited hereby, so long as REI and the other members of the
REI Group are, either expressly or as part of a class of stockholders which
includes REI and the other members of the REI Group, exempted from such action
or the limitations on legal rights imposed thereby.

     5.4 RESOURCES BOARD REPRESENTATION.

          (a) Beginning on the IPO Closing Date, and for so long as REI
beneficially owns shares representing a majority of the voting power of all of
the outstanding Resources Common Stock, REI shall have the right to designate
for nomination by the Resources Board (or any nominating committee thereof) to
the Resources Board a majority of the members of the

                                       22
<PAGE>   29

Resources Board. For so long as REI beneficially owns shares representing less
than a majority but at least 20% of the voting power of all of the outstanding
Resources Common Stock, REI shall have the right to designate for nomination by
the Resources Board (or any nominating committee thereof) to the Resources Board
a proportionate number of members of the Resources Board, as calculated in
accordance with Section 5.4. Notwithstanding anything to the contrary set forth
herein, Resources' obligations with respect to the election or appointment of
Resources' designated members shall be limited to the obligations set forth
under subsections (b) and (c) below.

          (b) Resources shall exercise all authority under applicable law and
shall use its best efforts to cause at least three persons designated by REI to
be elected to the Resources Board effective as of the IPO Closing Date (or at
the first regularly scheduled meeting thereafter). For so long as REI
beneficially owns shares representing a majority of the voting power of all of
the outstanding Resources Common Stock, commencing with the annual meeting of
stockholders of Resources to be held in 2002 and prior to each annual meeting of
stockholders of Resources thereafter, REI shall be entitled to present to the
Resources Board or any nominating committee thereof such number of designees of
REI (each, an "REI Designee") for election to the Resources Board (or if there
is a classified board, the class of directors up for election) at such annual
meeting as would result in REI having the appropriate number of REI Designees on
the Resources Board as determined pursuant to subsection (a) above.

          (c) Resources shall at all such times exercise all authority under
applicable law and use its best efforts to cause all such designees to be
nominated as Board members by the nominating committee of the Resources Board if
there is such a committee. Resources shall cause each REI Designee for election
to the Resources Board to be included in the slate of designees recommended by
the Resources Board to holders of Resources Common Stock (including at any
special meeting of stockholders held for the election of directors) and shall
use its best efforts to cause the election of each such REI Designee, including
soliciting proxies in favor of the election of such persons. In the event that
any REI Designee elected to the Resources Board shall cease to serve as a
director for any reason, the vacancy resulting therefrom shall be filled by the
Resources Board with a substitute REI Designee, unless such vacancy was caused
by action of stockholders (in which case, in accordance with Resources' Restated
Certificate of Incorporation, the stockholders shall fill such vacancy). In the
event that as a result of any increase in the size of the Resources Board, REI
is entitled to have one or more additional REI Designees elected to the
Resources Board pursuant to subsection (a) above, the REI Board shall appoint
the appropriate number of such additional REI Designees, unless such increase in
size of the Resources Board was caused by the action of stockholders (in which
case, in accordance with Resources' Restated Certificate of Incorporation, the
stockholders shall elect such additional director or directors). The parties
hereto agree that the directors of Resources identified in the IPO Registration
Statement include at least three REI Designees.

          (d) If at any time that REI Designees are serving on the Resources
Board, REI beneficially owns shares representing less than a majority but at
least 20% of the total voting power of all of the outstanding Resources Common
Stock, the number of persons REI shall be entitled to designate for nomination
by the Resources Board (or any nominating committee thereof) for election to the
Resources Board shall be equal to the number of directors computed using the
following formula (rounded to the nearest whole number): the product of (1) the

                                       23
<PAGE>   30

percentage of the voting power of all of the outstanding shares of Resources
Common Stock beneficially owned by REI and (2) the number of directors then on
the Resources Board (assuming no vacancies exist). Notwithstanding the
foregoing, if REI beneficially owns shares of Resources Common Stock
representing less than a majority of the total voting power of all outstanding
shares of Resources Common Stock and the calculation of the formula set forth in
the foregoing sentence would result in REI being entitled to elect a majority of
the members of the Resources Board, the formula will be recalculated with the
product being rounded down to the nearest whole number; provided, however, that
if REI, at any time, acquires additional shares of Resources Common Stock so
that REI beneficially owns shares of Resources Common Stock representing a
majority of the total voting power of all of the outstanding shares of Resources
Common Stock, then the number of persons REI shall be entitled to designate for
nomination by the Resources Board (or any nominating committee thereof) for
election to the Resources Board shall be adjusted upward, if appropriate as a
result of rounding, in accordance with the provisions of this Section 5.4(d). If
the number of REI Designees serving on the Resources Board exceeds the number
determined pursuant to the foregoing sentences of this Section 5.4(d) (such
difference being herein called the "Excess Director Number), then REI in its
sole discretion shall instruct a number of REI Designees (the number of which
designees shall be equal to the Excess Director Number) to promptly resign from
the Resources Board, and, to the extent such persons do not so resign, REI shall
assist Resources in increasing the size of the Resources Board, so that after
giving effect to such increase, the number of REI Designees on the Resources
Board is in accordance with the provisions of this Section 5.4(d).

     5.5 ISSUANCE OF STOCK. Following the IPO Closing Date and prior to the
Distribution Date, without the prior consent of REI, Resources shall not issue
any stock of Resources or any securities, options, warrants or rights
convertible into or exercisable or exchangeable for stock of Resources if the
issuance would cause REI to fail to control Resources within the meaning of
Section 368(c) of the Code or if the issuance would cause REI to fail to satisfy
the stock ownership requirements of Section 1504(a)(2) of the Code with respect
to the stock of Resources.

                                   ARTICLE VI

                          HOLDING COMPANY RESTRUCTURING

     6.1 INTENT TO EFFECT HOLDING COMPANY RESTRUCTURING. REI intends to cause
the Holding Company Restructuring described in this Article VI to occur as soon
as the conditions precedent set forth in Section 6.4 are satisfied.

     6.2 RESTRUCTURING STEPS. The Holding Company Restructuring shall consist of
the following transactions:

          (a) REI will form a new wholly owned Subsidiary ("Genco Holding
Company") to become a transitory holding company of Genco LP.

          (b) Genco Holding Company will form two wholly owned limited liability
companies ("Genco GP LLC" and "Genco LP LLC") that form Genco LP of which Genco
GP LLC is the 1% general partner and Genco LP LLC is the 99% limited partner.

                                       24
<PAGE>   31

          (c) REI will contribute the Genco Assets to the capital of Genco LP
for the benefit of Genco Holding Company, Genco GP LLC and Genco LP LLC.

          (d) Regco will organize a wholly owned subsidiary ("MergerCo2") for
purposes of effecting the Restructuring Merger.

          (e) MergerCo2 will merge (the "Restructuring Merger") with and into
REI; in the merger the Regco stock owned by REI will be cancelled and each
outstanding share of common stock of REI will be automatically converted into an
outstanding share of common stock of Regco.

          (f) REI will distribute to Regco the stock of the Genco Holding
Company and the stock of the Subsidiaries identified in Schedule 6.2(f) owned by
REI.

          (g) Regco will expressly assume all obligations of REI under this
Agreement and under each of the Ancillary Agreements and all other obligations
under this Agreement and under each of the Ancillary Agreements which are
expressed as requiring performance by, or imposing obligations on, Regco.

          (h) Genco Holding Company will merge with and into Regco.

     6.3 ACTIONS PRIOR TO THE HOLDING COMPANY RESTRUCTURING. (a) If required by
applicable law, Regco shall file a Registration Statement on Form S-4 with
respect to the offer and sale of common stock of Regco in the Restructuring
Merger and use reasonable commercial efforts to cause the same to become
effective and the proxy statement and prospectus contained therein shall be
mailed to shareholders of REI in accordance with the requirements of the
Securities Act of 1933, as amended.

          (b) Regco shall prepare and file, and use reasonable commercial
efforts to have approved, a listing of its common stock issued in the
Restructuring Merger on the NYSE, subject to official notice of issuance.

          (c) REI and Regco shall use reasonable commercial efforts to make
appropriate filings and applications with the Commission in order to satisfy the
condition set forth in Section 6.4(b).

     6.4 CONDITIONS TO HOLDING COMPANY RESTRUCTURING. The following are
conditions to the Holding Company Restructuring. The conditions are for the sole
benefit of REI and shall not give rise to or create any duty on the part of REI
or the REI Board of Directors to waive or not waive any such condition.

          (a) To the extent required by applicable law, the shareholders of REI
shall have approved an agreement and plan of merger necessary to effect the
Restructuring Merger.

          (b) (i) The Commission shall have issued an order acceptable to REI
under Sections 9(a)(2) and 10 of the Public Utility Holding Company Act of 1935,
as amended, approving the acquisition by Regco of securities of "public utility
companies" in the Holding Company Restructuring and (ii) if no exemption from
the registration requirements of such Act

                                       25
<PAGE>   32

is available to Regco, the registration of Regco as a "holding company" under
such Act shall have become effective.

          (c) Any other material Governmental Approvals necessary to consummate
the Holding Company Restructuring shall have been obtained and be in full force
and effect.

          (d) No order, injunction or decree issued by any court or agency of
competent jurisdiction or other legal restraint or prohibition preventing the
consummation of the Holding Company Restructuring shall be in effect and no
other event outside the control of REI shall have occurred or failed to occur
that prevents the consummation of the Holding Company Restructuring.

          (e) Regco shall have obtained a private letter ruling from the
Internal Revenue Service in form and substance satisfactory to Regco (in its
sole discretion), to the effect that the transfer from REI to Genco LP of the
ownership of the nuclear decommissioning trust assets referred to in Section
10.13 and those Genco Assets that are subject to regulation by the Nuclear
Regulatory Commission will not adversely affect the tax status of Genco or of
the nuclear decommissioning trust or of further contributions to such trust.

          (f) Such amendments, consents, waivers, approvals, refinancings or
other actions as may be necessary in connection with the Holding Company
Restructuring under debt obligations of REI and its Subsidiaries and material
contracts and agreements to which REI or any of its Subsidiaries are parties
shall have been obtained or taken.

     6.5 SOLE DISCRETION OF REI. REI currently intends, following the
consummation of the IPO, to complete the Holding Company Restructuring as
promptly as practicable after the IPO Closing Date. REI shall, in its sole and
absolute discretion, determine the date of the consummation of the Holding
Company Restructuring and the steps therein and all terms thereof, including,
without limitation, the form, structure and terms of any transaction(s) to
effect the Holding Company Restructuring and the timing of and conditions to the
consummation thereof. In addition, REI may at any time and from time to time
until the completion of the Holding Company Restructuring decide to abandon the
Holding Company Restructuring or modify or change the terms of the Holding
Company Restructuring including, without limitation, by accelerating or delaying
the timing of the consummation of all or part of the Holding Company
Restructuring. Resources shall cooperate with REI in all respects to accomplish
the Holding Company Restructuring and shall, at REI's direction, promptly take
any and all actions necessary or desirable to effect the Holding Company
Restructuring.

                                  ARTICLE VII

                                THE DISTRIBUTION

7.1      THE DISTRIBUTION.

          (a) Delivery of Shares for Distribution. Subject to Section 7.4
hereof, on or prior to the date the Distribution is made (the "Distribution
Date"), Regco will deliver to the distribution agent to be appointed by Regco,
or if no distribution agent is appointed, then Regco (the "Distribution Agent"),
to distribute to the shareholders of Regco the shares of Resources

                                       26
<PAGE>   33

Common Stock held by Regco pursuant to the Distribution for the benefit of
holders of record of common stock of Regco on the record date, a single stock
certificate, endorsed by Regco in blank, representing all of the outstanding
shares of Resources Common Stock then owned by Regco, and shall cause the
transfer agent for the shares of common stock of Regco to instruct the
Distribution Agent to distribute on the Distribution Date the appropriate number
of such shares of Resources Common Stock to each such holder or designated
transferee or transferees of such holder.

          (b) Shares Received. Subject to Sections 7.4 and 7.5, each holder of
common stock of Regco on the Record Date (or such holder's designated transferee
or transferees) will be entitled to receive in the Distribution a number of
shares of Resources Common Stock equal to the number of shares of common stock
of Regco held by such holder on the Record Date multiplied by a fraction the
numerator of which is the number of shares of Resources Common Stock
beneficially owned by Regco on the Record Date and the denominator of which is
the number of shares of common stock of Regco outstanding on the Record Date.

          (c) Obligation to Provide Information. Resources and Regco, as the
case may be, will provide to the Distribution Agent all share certificates and
any information required in order to complete the Distribution on the basis
specified above.

     7.2 ACTIONS PRIOR TO THE DISTRIBUTION.

          (a) Regco and Resources shall prepare and mail, prior to the
Distribution Date, to the holders of common stock of Regco such information
concerning Resources and the Distribution and such other matters as Regco shall
reasonably determine are necessary and as may be required by law. Regco and
Resources will prepare, and Resources will, to the extent required under
applicable law, file with the Commission any such documentation which Regco and
Resources determine is necessary or desirable to effectuate the Distribution,
and Regco and Resources shall each use its reasonable commercial efforts to
obtain all necessary approvals from the Commission with respect thereto as soon
as practicable.

          (b) Regco and Resources shall take all such actions as may be
necessary or appropriate under the securities or blue sky laws of the United
States (and any comparable laws under any foreign jurisdiction) in connection
with the Distribution.

          (c) Resources shall prepare and file, and shall use its reasonable
commercial efforts to have approved, an application for the listing of the
Resources Common Stock to be distributed in the Distribution on the NYSE,
subject to official notice of distribution.

          (d) Immediately prior to the Distribution, (i) each person who is an
officer or employee of any member of the REI Group and an officer or employee of
any member of the Resources Group immediately prior to the Distribution (each a
"Joint Employee") and who is to continue as an officer or employee of any member
of the REI Group after the Distribution shall resign from each of such person's
positions as an officer or employee with each member of the Resources Group, and
(ii) each such Joint Employee who is to continue as an officer or employee of
any member of the Resources Group, after the Distribution, shall resign from
each of such person's positions as an officer or employee with each member of
the REI Group.

                                       27
<PAGE>   34

     7.3 SOLE DISCRETION OF REI. REI currently intends, following the
consummation of the IPO, that Regco shall complete the Distribution as promptly
as practicable after the IPO Closing Date. Regco shall, in its sole and absolute
discretion, determine the date of the consummation of the Distribution and all
terms of the Distribution, including, without limitation, the form, structure
and terms of any transaction(s) and/or offering(s) to effect the Distribution
and the timing of and conditions to the consummation of the Distribution. In
addition, REI (or Regco) may at any time and from time to time until the
completion of the Distribution decide to abandon the Distribution or modify or
change the terms of the Distribution, including, without limitation, by
accelerating or delaying the timing of the consummation of all or part of the
Distribution. Resources shall cooperate with Regco in all respects to accomplish
the Distribution and shall, at Regco's direction, promptly take any and all
actions necessary or desirable to effect the Distribution, including, without
limitation, the registration under the Securities Act of 1933, as amended, of
the Resources Common Stock on an appropriate registration form or forms to be
designated by Regco. REI shall select any investment banker(s) and manager(s) in
connection with the Distribution, as well as any financial printer, solicitation
and/or exchange agent and outside counsel for Regco; provided, however, that
nothing herein shall prohibit Resources from engaging (at its own expense) its
own financial, legal, accounting and other advisors in connection with the
Distribution.

     7.4 CONDITIONS TO THE DISTRIBUTION. The following are conditions to the
consummation of the Distribution. The conditions are for the sole benefit of
Regco and shall not give rise to or create any duty on the part of Regco or the
Regco Board of Directors to waive or not waive any such condition.

          (a) IRS Ruling. Regco shall have obtained a private letter ruling from
the Internal Revenue Service in form and substance satisfactory to Regco (in its
sole discretion), and such ruling shall remain in effect as of the Distribution
Date, to the effect that (i) the contribution by REI of all of its Resources
Common Stock to Regco will qualify as a reorganization under Section 355 of the
Code, (ii) the distribution by Regco of all of its Resources Common Stock to the
shareholders of Regco will qualify as a reorganization under Section 355 of the
Code; (iii) no gain or loss will be recognized by (and no amount will otherwise
be included in the income of) the shareholders of Regco upon their receipt of
Resources Common Stock pursuant to the Distribution; (iv) no gain or loss will
be recognized by REI upon the contribution of its Resources Common Stock to
Regco; and (v) no gain or loss will be recognized by Regco pursuant to the
Distribution.

          (b) Holding Company Restructuring. The Holding Company Restructuring
shall have occurred.

          (c) Governmental Approvals. Any material Governmental Approvals
necessary to consummate the Distribution shall have been obtained and be in full
force and effect;

          (d) No Legal Restraints. No order, injunction or decree issued by any
court or agency of competent jurisdiction or other legal restraint or
prohibition preventing the consummation of the Distribution shall be in effect
and no other event outside the control of

                                       28
<PAGE>   35

Regco shall have occurred or failed to occur that prevents the consummation of
the Distribution; and

          (e) No Material Adverse Effect. No other events or developments shall
have occurred subsequent to the IPO Closing Date that, in the judgment of the
Board of Directors of Regco, would result in the Distribution having a material
adverse effect on Regco or on the shareholders of Regco.

     7.5 FRACTIONAL SHARES. As soon as practicable after the Distribution Date,
Regco shall direct the Distribution Agent to determine the number of whole
shares and fractional shares of Resources Common Stock allocable to each holder
of record or beneficial owner of common stock of REI as of the Record Date, to
aggregate all such fractional shares and sell the whole shares obtained thereby
at the direction of Regco, in open market transactions, at then prevailing
trading prices, and to cause to be distributed to each such holder or for the
benefit of each such beneficial owner to which a fractional share shall be
allocable such holder's or owner's ratable share of the proceeds of such sale,
after making appropriate deductions of the amount required to be withheld for
federal income tax purposes and after deducting an amount equal to all brokerage
charges, commissions and transfer taxes attributed to such sale. Regco and the
Distribution Agent shall use their reasonable commercial efforts to aggregate
the shares of common stock of REI that may be held by any beneficial owner
thereof through more than one account in determining the fractional share
allocable to such beneficial owner.

                                  ARTICLE VIII

                               GENCO TRANSACTIONS

     8.1 ORGANIZATION OF GENCO LP. In connection with the Holding Company
Restructuring, REI shall cause the Genco Assets to be contributed to Genco LP,
free and clear of the lien of the Mortgage and all other liens and security
interests securing Indebtedness, and shall cause Genco LP to assume the Genco
Liabilities. The date on which such contribution and assumption occurs is
referred to herein as the "Genco Organization Date." On the Genco Organization
Date, all of the outstanding partnership interests in Genco LP shall be
indirectly owned by Regco.

     8.2 GENCO CONTRACTS. On the Genco Organization Date, Genco LP shall be
assigned, and will assume the obligations of REI under, the Technical Services
Agreement.

     8.3 INSTRUMENTS OF TRANSFER AND ASSUMPTION. Transfers of the Genco Assets
shall be effected by delivery by REI or the other transferring entity, as
applicable, to the transferee, of (i) with respect to those assets that
constitute stock, certificates endorsed in blank or evidenced or accompanied by
stock powers or other instruments of transfer endorsed in blank, against
receipt, (ii) with respect to real property interests and improvements thereon,
a general warranty deed with general warranty of limited application limiting
recourse and remedies to title insurance and warranties by predecessors in title
to REI, and (iii) with respect to all other Assets, such good and sufficient
instruments of contribution, conveyance, assignment and transfer, in form and
substance reasonably satisfactory to REI and Resources, as shall be necessary to
vest in the designated transferee, all of the title and ownership interest of
the transferor in and to any such

                                       29
<PAGE>   36

Asset, (b) to the extent necessary, the assumption of the Liabilities
contemplated pursuant to Section 8.1 hereof shall be effected by delivery by the
transferee to the transferor of such good and sufficient instruments of
assumption, in form and substance reasonably satisfactory to REI and Resources,
as shall be necessary for the assumption by the transferee of such Liabilities.
Each instrument of transfer shall contain a representation and warranty that the
portion of the Genco Assets transferred thereby shall be free and clear of the
lien of the Mortgage and all other liens and security interests securing
Indebtedness. Each of the parties hereto also agrees to deliver to any other
party hereto such other documents, instruments and writings as may be reasonably
requested by such other parties hereto in connection with the transactions
contemplated hereby. Notwithstanding any other provisions of this Agreement to
the contrary, (x) THE TRANSFERS AND ASSUMPTIONS REFERRED TO IN THIS ARTICLE VIII
WILL BE MADE WITHOUT ANY REPRESENTATION OR WARRANTY OF ANY NATURE (a) AS TO THE
VALUE OR FREEDOM FROM ENCUMBRANCE OF, ANY ASSETS, (b) AS TO ANY WARRANTY OF
MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OF, OR ANY OTHER
MATTER CONCERNING, ANY ASSETS OR (c) AS TO THE LEGAL SUFFICIENCY TO CONVEY TITLE
TO ANY ASSETS, and (y) the instruments of transfer or assumption referred to in
this Section 8.3 shall not include any representations and warranties other than
as specifically provided herein. REI and Resources hereby acknowledge and agree
that ALL ASSETS ARE BEING TRANSFERRED "AS IS, WHERE IS."

     8.4 ORGANIZATION OF GENCO INC. Prior to the Genco Public Ownership Date,
REI shall organize Genco Inc. and shall contribute to Genco Inc. all of the
membership interests in Genco GP LLC and Genco LP LLC. Immediately following
such transactions, all the outstanding common stock of Genco Inc. shall be owned
by Regco.

     8.5 RELEASES AND INDEMNITIES. In connection with the organization of Genco
LP or the Genco Public Ownership Event, REI and Genco will enter into agreements
regarding such mutual releases and indemnities similar in effect to those set
forth in Article III as REI shall specify.

                                   ARTICLE IX

                         ARBITRATION; DISPUTE RESOLUTION

     9.1 AGREEMENT TO ARBITRATE. Except as otherwise specifically provided in
any Ancillary Agreement, the procedures for discussion, negotiation and
arbitration set forth in this Article IX shall apply to all disputes,
controversies or claims (whether sounding in contract, tort or otherwise) that
may rise out of or relate to, or arise under or in connection with this
Agreement or any Ancillary Agreement, or the transactions contemplated hereby or
thereby (including all actions taken in furtherance of the transactions
contemplated hereby or thereby on or prior to the date hereof), or (for a period
of ten years after the date hereof) the commercial or economic relationship of
the parties relating hereto or thereto, between or among any member of the REI
Group and the Resources Group. Each party agrees on behalf of itself and each
member of its respective Group that the procedures set forth in this Article IX
shall be the sole and exclusive remedy in connection with any dispute,
controversy or claim relating to any of the foregoing matters and irrevocably
waives any right to commence any Action in or before any

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Governmental Authority, except as expressly provided in Section 9.7(b) and
except to the extent provided under the Arbitration Act in the case of judicial
review of arbitration results or awards. Each party on behalf of itself and each
member of its respective Group irrevocably waives any right to any trial by jury
with respect to any claim, controversy or dispute set forth in this Section 9.1.

     9.2 ESCALATION. (a) It is the intent of the parties to use their respective
reasonable best efforts to resolve expeditiously any dispute, controversy or
claim between or among them with respect to the matters covered hereby that may
arise from time to time on a mutually acceptable negotiated basis. In
furtherance of the foregoing, any party involved in a dispute, controversy or
claim may deliver a notice (an "Escalation Notice") demanding an in-person
meeting involving representatives of the parties at a senior level of management
of the parties (or if the parties agree, of the appropriate strategic business
unit or division within such entity). A copy of any such Escalation Notice shall
be given to the General Counsel, or like officer or official, of each party
involved in the dispute, controversy or claim (which copy shall state that it is
an Escalation Notice pursuant to this Agreement). Any agenda, location or
procedures for such discussions or negotiations between the parties may be
established by the parties from time to time; provided, however, that the
parties shall use their reasonable best efforts to meet within 30 days of the
Escalation Notice.

          (b) The parties may, by mutual consent, retain a mediator to aid the
parties in their discussions and negotiations by informally providing advice to
parties. Any opinion expressed by the mediator shall be strictly advisory and
shall not be binding on the parties, nor shall any opinion expressed by the
mediator be admissible in any arbitration proceedings. The mediator may be
chosen from a list of mediators previously selected by the parties or by other
agreement of the parties. Costs of the mediation shall be borne equally by the
parties involved in the matter, except that each party shall be responsible for
its own expenses. Mediation is not a prerequisite to a demand for arbitration
under Section 9.3.

     9.3 DEMAND FOR ARBITRATION. (a) At any time after the first to occur of (i)
the date of the meeting actually held pursuant to the applicable Escalation
Notice or (ii) 45 days after the delivery of an Escalation Notice (as
applicable, the "Arbitration Demand Date"), any party involved in the dispute,
controversy or claim (regardless of whether such party delivered the Escalation
Notice) may deliver a notice demanding arbitration of such dispute, controversy
or claim (a "Arbitration Demand Notice"). In the event that any party shall
deliver an Arbitration Demand Notice to another party, such other party may
itself deliver an Arbitration Demand Notice to such first party with respect to
any related dispute, controversy or claim with respect to which the Applicable
Deadline has not passed without the requirement of delivering an Escalation
Notice. No party may assert that the failure to resolve any matter during any
discussions or negotiations, the course of conduct during the discussions or
negotiations or the failure to agree on a mutually acceptable time, agenda,
location or procedures for the meeting, in each case, as contemplated by Section
9.2, is a prerequisite to a demand for arbitration under Section 9.3. In the
event that any party delivers an Arbitration Demand Notice with respect to any
dispute, controversy or claim that is the subject of any then pending
arbitration proceeding or of a previously delivered Arbitration Demand Notice,
all such disputes, controversies and claims shall be resolved in the arbitration
proceeding for which an Arbitration Demand Notice was first

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delivered unless the arbitrator in his or her sole discretion determines that it
is impracticable or otherwise inadvisable to do so.

          (b) Except as may be expressly provided in any Ancillary Agreement,
any Arbitration Demand Notice may be given until one year and 45 days after the
later of the occurrence of the act or event giving rise to the underlying claim
or the date on which such act or event was, or should have been, in the exercise
of reasonable due diligence, discovered by the party asserting the claim (as
applicable and as it may in a particular case be specifically extended by the
parties in writing, the "Applicable Deadline"). Any discussions, negotiations or
mediations between the parties pursuant to this Agreement or otherwise will not
toll the Applicable Deadline unless expressly agreed in writing by the parties.
Each of the parties agrees on behalf of itself and each member of its Group that
if an Arbitration Demand Notice with respect to a dispute, controversy or claim
is not given prior to the expiration of the Applicable Deadline, as between or
among the parties and the members of their Groups, such dispute, controversy or
claim will be barred. Subject to Sections 9.7(d) and 9.8, upon delivery of an
Arbitration Demand Notice pursuant to Section 9.3(a) prior to the Applicable
Deadline, the dispute, controversy or claim shall be decided by a sole
arbitrator in accordance with the rules set forth in this Article IX.

     9.4 ARBITRATORS. (a) Within 15 days after a valid Arbitration Demand Notice
is given, the parties involved in the dispute, controversy or claim referenced
therein shall attempt to select a sole arbitrator satisfactory to all such
parties.

          (b) In the event that such parties are not able jointly to select a
sole arbitrator within such 15-day period, such parties shall each appoint an
arbitrator (who need not be disinterested as to the parties or the matter)
within 30 days after delivery of the Arbitration Demand Notice. If one party
appoints an arbitrator within such time period and the other party or parties
fail to appoint an arbitrator within such time period, the arbitrator appointed
by the one party shall be the sole arbitrator of the matter.

          (c) In the event that a sole arbitrator is not selected pursuant to
paragraph (a) or (b) above, the two arbitrators will, within 30 days after the
appointment of the later of them to be appointed, select an additional
arbitrator who shall act as the sole arbitrator of the dispute. After selection
of such sole arbitrator, the initial arbitrators shall have no further role with
respect to the dispute. In the event that the arbitrators so appointed do not,
within 30 days after the appointment of the later of them to be appointed, agree
on the selection of the sole arbitrator, any party involved in such dispute may
apply to the Senior Judge of the U.S. District Court for the Southern District
of Texas to select the sole arbitrator, which selection shall be made by such
organization within 30 days after such application. Any arbitrator selected
pursuant to this paragraph (c) shall be disinterested with respect to each of
the parties and shall be reasonably competent in the applicable subject matter.

          (d) The sole arbitrator selected pursuant to paragraph (a), (b) or (c)
above will set a time for the hearing of the matter which will commence no later
than 90 days after the date of appointment of the sole arbitrator pursuant to
paragraph (a), (b) or (c) above and which hearing will be no longer than 30 days
(unless in the judgment of the arbitrator the matter is unusually complex and
sophisticated and thereby requires a longer time, in which event such

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hearing shall be no longer than 90 days). The final decision of such arbitrator
will be rendered in writing to the parties not later than 60 days after the last
hearing date, unless otherwise agreed by the parties in writing.

          (e) The place of any arbitration hereunder will be Houston, Texas,
unless otherwise agreed by the parties.

     9.5 HEARINGS. Within the time period specified in Section 9.4(d), the
matter shall be presented to the arbitrator at a hearing by means of written
submissions of memoranda and verified witness statements, filed simultaneously,
and responses, if necessary in the judgment of the arbitrator or both the
parties. If the arbitrator deems it to be essential to a fair resolution of the
dispute, live cross-examination or direct examination may be permitted, but is
not generally contemplated to be necessary. The arbitrator shall actively manage
the arbitration with a view to achieving a just, speedy and cost-effective
resolution of the dispute, claim or controversy. The arbitrator may, in his or
her discretion, set time and other limits on the presentation of each party's
case, its memoranda or other submissions, and refuse to receive any proffered
evidence, which the arbitrator, in his or her discretion, finds to be
cumulative, unnecessary, irrelevant or of low probative nature. Except as
otherwise set forth herein, any arbitration hereunder will be conducted in
accordance with the procedures of the Center for Public Resources of New York
("CPR"). Except as expressly set forth in Section 9.8(b), the decision of the
arbitrator will be final and binding on the parties, and judgment thereon may be
had and will be enforceable in any court having jurisdiction over the parties.
Arbitration awards will bear interest at an annual rate of the Prime Rate plus
2% per annum, subject to any maximum amount permitted by applicable law. To the
extent that the provisions of this Agreement and the prevailing rules of the CPR
conflict, the provisions of this Agreement shall govern.

     9.6 DISCOVERY AND CERTAIN OTHER MATTERS. (a) Any party involved in a
dispute subject to this Article IX may request limited document production from
the other party or parties of specific and expressly relevant documents, with
the reasonable expenses of the producing party incurred in such production paid
by the requesting party. Any such discovery (which right to documents shall be
substantially less than document discovery rights prevailing under the Federal
Rules of Civil Procedure) shall be conducted expeditiously and shall not cause
the hearing provided for in Section 9.5 to be adjourned except upon consent of
all parties involved in the applicable dispute or upon an extraordinary showing
of cause demonstrating that such adjournment is necessary to permit discovery
essential to a party to the proceeding. Depositions, interrogatories or other
forms of discovery (other than the document production set forth above) shall
not occur except by consent of the parties involved in the applicable dispute.
Disputes concerning the scope of document production and enforcement of the
document production requests will be determined by written agreement of the
parties involved in the applicable dispute or, failing such agreement, will be
referred to the arbitrator for resolution. All discovery requests will be
subject to the parties' rights to claim any applicable privilege. The arbitrator
will adopt procedures to protect the proprietary rights of the parties and to
maintain the confidential treatment of the arbitration proceedings (except as
may be required by law). Subject to the foregoing, the arbitrator shall have the
power to issue subpoenas to compel the production or documents relevant to the
dispute, controversy or claim.

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          (b) The arbitrator shall have full power and authority to determine
issues of arbitrability but shall otherwise be limited to interpreting or
construing the applicable provisions of this Agreement or any Ancillary
Agreement, and will have no authority or power to limit, expand, alter, amend,
modify, revoke or suspend any condition or provision of this Agreement or any
Ancillary Agreement; it being understood, however, that the arbitrator will have
full authority to implement the provisions of this Agreement or any Ancillary
Agreement, and to fashion appropriate remedies for breaches of this Agreement
(including interim or permanent injunctive relief); provided that the arbitrator
shall not have (i) any authority in excess of the authority a court having
jurisdiction over the parties and the controversy or dispute would have absent
these arbitration provisions or (ii) any right or power to award punitive or
treble damages. It is the intention of the parties that in rendering a decision
the arbitrator give effect to the applicable provisions of this Agreement and
the Ancillary Agreements and follow applicable law (it being understood and
agreed that this sentence shall not give rise to a right of judicial review of
the arbitrator's award).

          (c) If a party fails or refuses to appear at and participate in an
arbitration hearing after due notice, the arbitrator may hear and determine the
controversy upon evidence produced by the appearing party.

          (d) Arbitration costs will be borne equally by each party involved in
the mater, except that each party will be responsible for its own attorney's
fees and other costs and expenses, including the costs of witnesses selected by
such party.

     9.7 CERTAIN ADDITIONAL MATTERS. (a) Except as to arbitration of cases
arising under or related to the Genco Option Agreement, any arbitration award
shall be a bare award limited to a holding for or against a party and shall be
without findings as to facts, issues or conclusions of law (including with
respect to any matters relating to the validity or infringement of patents or
patent applications) and shall be without a statement of the reasoning on which
the award rests, but must be in adequate form so that a judgment of a court may
be entered thereupon. Judgment upon any arbitration award hereunder may be
entered in any court having jurisdiction thereof.

          (b) Prior to the time at which an arbitrator is appointed pursuant to
Section 9.4, any party may seek one or more temporary restraining orders in a
court of competent jurisdiction if necessary in order to preserve and protect
the status quo. Neither the request for, or grant or denial of, any such
temporary restraining order shall be deemed a waiver of the obligation to
arbitrate as set forth herein and the arbitrator may dissolve, continue or
modify any such order. Any such temporary restraining order shall remain in
effect until the first to occur of the expiration of the order in accordance
with its terms or the dissolution thereof by the arbitrator.

          (c) Except as required by law, the parties shall hold, and shall cause
their respective officers, directors, employees, agents and other
representatives to hold, the existence, content and result of mediation or
arbitration in confidence in accordance with the provisions of Article X and
except as may be required in order to enforce any award. Each of the parties
shall request that any mediator or arbitrator comply with such confidentiality
requirement.

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          (d) In the event that at any time the sole arbitrator shall fail to
serve as an arbitrator for any reason, the parties shall select a new arbitrator
who shall be disinterested as to the parties and the matter in accordance with
the procedures set forth herein for the selection of the initial arbitrator. The
extent, if any, to which testimony previously given shall be repeated or as to
which the replacement arbitrator elects to rely on the stenographic record (if
there is one) of such testimony shall be determined by the replacement
arbitrator.

     9.8 ARBITRATION OF GENCO OPTION AGREEMENT CASES. In cases arising under or
related to the Genco Option Agreement:

          (a) The proposed final decision of the Arbitrator shall be rendered
pursuant to Section 9.4(d), but shall invite the parties to submit findings of
facts and conclusions of law for use by the Arbitrator in drawing up his final
arbitral award.

          (b) The final award shall expressly set forth sufficient findings of
fact and conclusions of law to support a final judgment under Texas law based
upon the arbitration award. Any exercise of discretion shall be limited by the
standards applicable to trial court judges.

          (c) A full record, including a stenographic transcription of oral
testimony, evidence shall be maintained by the Arbitrator and forwarded to a
court of competent jurisdiction in the event of appeal.

          (d) The final award shall be appealable to the courts of Texas to the
full extent permitted by laws, and such courts shall have all of such power to
review, correct, reverse, modify, remand or otherwise adjudicate such appeal as
Texas law may allow.

     9.9 CONTINUITY OF SERVICE AND PERFORMANCE. Unless otherwise agreed in
writing, the parties will continue to provide service and honor all other
commitments under this Agreement and each Ancillary Agreement during the course
of dispute resolution pursuant to the provisions of this Article IX with respect
to all matters not subject to such dispute, controversy or claim.

     9.10 LAW GOVERNING ARBITRATION PROCEDURES. The interpretation of the
provisions of this Article IX, only insofar as they relate to the agreement to
arbitrate and any procedures pursuant thereto, shall be governed by the
Arbitration Act and other applicable federal law. In all other respects, the
interpretation of this Agreement shall be governed as set forth in Section 11.3.

                                   ARTICLE X

                           COVENANTS AND OTHER MATTERS

     10.1 OTHER AGREEMENTS. In addition to the specific agreements, documents
and instruments annexed to this Agreement, REI and Resources agree to execute or
cause to be executed by the appropriate parties and deliver, as appropriate,
such other agreements, instruments and other documents as may be necessary or
desirable in order to effect the purposes of this Agreement and the Ancillary
Agreements.

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     10.2 FURTHER INSTRUMENTS. At the request of Resources and without further
consideration, REI will execute and deliver, and will cause its applicable
Subsidiaries to execute and deliver, to Resources and its Subsidiaries such
other instruments of transfer, conveyance, assignment, substitution and
confirmation and take such action as Resources may reasonably deem necessary or
desirable in order more effectively to transfer, convey and assign to Resources
and its Subsidiaries and confirm Resources' and its Subsidiaries' title to all
of the assets, rights and other things of value contemplated to be transferred
to Resources and its Subsidiaries pursuant to this Agreement, the Ancillary
Agreements, and any documents referred to therein, to put Resources and its
Subsidiaries in actual possession and operating control thereof and to permit
Resources and its Subsidiaries to exercise all rights with respect thereto
(including, without limitation, rights under contracts and other arrangements as
to which the consent of any third party to the transfer thereof shall not have
previously been obtained). At the request of REI and without further
consideration, Resources will execute and deliver, and will cause its applicable
Subsidiaries to execute and deliver, to REI and its Subsidiaries all
instruments, assumptions, novations, undertakings, substitutions or other
documents and take such other action as REI may reasonably deem necessary or
desirable in order to have Resources fully and unconditionally assume and
discharge the liabilities contemplated to be assumed by Resources under this
Agreement, any Ancillary Agreement or any document in connection herewith and to
relieve the REI Group of any liability or obligation with respect thereto and
evidence the same to third parties. Neither REI nor Resources shall be
obligated, in connection with the foregoing, to expend money other than
reasonable out-of-pocket expenses, attorneys' fees and recording or similar
fees. Furthermore, each party, at the request of another party hereto, shall
execute and deliver such other instruments and do and perform such other acts
and things as may be necessary or desirable for effecting completely the
consummation of the transactions contemplated hereby.

     10.3 AGREEMENT FOR EXCHANGE OF INFORMATION. Each of REI and Resources
agrees to provide, or cause to be provided, to each other as soon as reasonably
practicable after written request therefor, any Information in the possession or
under the control of such party that the requesting party reasonably needs (i)
to comply with reporting, disclosure, filing or other requirements imposed on
the requesting party (including under applicable securities laws) by a
Governmental Authority having jurisdiction over the requesting party, (ii) for
use in any Regulatory Proceeding, judicial proceeding or other proceeding or in
order to satisfy audit, accounting, claims, regulatory, litigation or other
similar requirements, (iii) to comply with its obligations under this Agreement
or any Ancillary Agreement or (iv) in connection with the ongoing businesses of
REI or Resources as it relates to the conduct of such businesses prior to the
Distribution Date, as the case may be; provided, however, that in the event that
any party determines that any such provision of Information could be
commercially detrimental, violate any law or agreement, or waive any
attorney-client privilege, the parties shall take all reasonable measures to
permit the compliance with such obligations in a manner that avoids any such
harm or consequence.

          (a) After the Separation Date, (i) each party shall maintain in effect
at its own cost and expense adequate systems and controls for its business to
the extent necessary to enable the other party to satisfy its reporting,
accounting, audit and other obligations, and (ii) each party shall provide, or
cause to be provided, to the other party and its Subsidiaries in such form as
such requesting party shall request, at no charge to the requesting party, all
financial and other data

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and information as the requesting party determines necessary or advisable in
order to prepare its financial statements and reports or filings with any
Governmental Authority.

          (b) Any Information owned by a party that is provided to a requesting
party pursuant to this Section 10.3 shall be deemed to remain the property of
the providing party. Unless specifically set forth herein, nothing contained in
this Agreement shall be construed as granting or conferring rights of license or
otherwise in any such Information.

          (c) To facilitate the possible exchange of Information pursuant to
this Section 10.3 and other provisions of this Agreement after the Distribution
Date, each party agrees to use its reasonable commercial efforts to retain all
Information in its respective possession or control on the Distribution Date
substantially in accordance with its policies as in effect on the Separation
Date. Resources shall not amend its or its Subsidiaries' record retention
policies prior to the Distribution Date without the consent of REI. However,
except as set forth in the Tax Allocation Agreement, at any time after the
Distribution Date, each party may amend their respective record retention
policies at such party's discretion; provided, however, that if a party desires
to effect the amendment within three (3) years after the Distribution Date, the
amending party must give thirty (30) days prior written notice of such change in
the policy to the other party to this Agreement. No party will destroy, or
permit any of its Subsidiaries to destroy, any Information that exists on the
Separation Date (other than Information that is permitted to be destroyed under
the current record retention policy of such party) without first using its
reasonable commercial efforts to notify the other party of the proposed
destruction and giving the other party the opportunity to take possession of
such Information prior to such destruction.

          (d) No party shall have any liability to any other party in the event
that any Information exchanged or provided pursuant to this Section is found to
be inaccurate, in the absence of willful misconduct by the party providing such
Information. No party shall have any liability to any other party if any
Information is destroyed or lost after reasonable commercial efforts by such
party to comply with the provisions of Section 10.3(c).

          (e) The rights and obligations granted under this Section 10.3 are
subject to any specific limitations, qualifications or additional provisions on
the sharing, exchange or confidential treatment of Information set forth in this
Agreement and any Ancillary Agreement.

          (f) Each party hereto shall, except in the case of a dispute subject
to this Article IX brought by one party against another party (which shall be
governed by such discovery rules as may be applicable under Article IX or
otherwise), use its reasonable commercial efforts to make available to each
other party, upon written request, the former, current and future directors,
officers, employees, other personnel and agents of such party as witnesses and
any books, records or other documents within its control or which it otherwise
has the ability to make available, to the extent that any such person (giving
consideration to business demands of such directors, officers, employees, other
personnel and agents) or books, records or other documents may reasonably be
required in connection with any Regulatory Proceeding, judicial proceeding or
other proceeding in which the requesting party may from time to time be
involved, regardless of whether such Regulatory Proceeding, judicial proceeding
or other proceeding is a matter with respect to which indemnification may be
sought hereunder. The requesting party shall bear all costs and expenses in
connection therewith.

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          (g) To the extent Resources or a member of the Resources Group is
deemed or determined by the PUCT by final order no longer subject to rehearing
by the PUCT to be an "affiliate" or a "competitive affiliate" of REI, Resources
and REI shall observe any applicable requirements of the Utilities Code, PUCT
rules and of the REI code of conduct and shall require their respective
personnel and contractor personnel to observe that code of conduct. No member of
the REI Group or the Resources Group shall directly or indirectly make
application or request to the PUCT to make such a finding or determination nor
will any member of the REI Group or the Resources Group directly or indirectly
take a position in support of such a finding or determination.

     10.4 AUDITORS AND AUDITS; ANNUAL AND QUARTERLY STATEMENTS AND ACCOUNTING.
(a) Each party agrees that, for so long as Resources remains a Subsidiary of
REI, and with respect to any financial reporting period during which Resources
was a Subsidiary of REI:

               (i) Resources shall not select a different accounting firm than
          the firm selected by REI to audit its financial statements to serve as
          its independent certified public accountants (the "Resources
          Auditors") for purposes of providing an opinion on its consolidated
          financial statements without REI's prior written consent (which shall
          not be unreasonably withheld).

               (ii) Resources shall use its reasonable commercial efforts to
          enable the accounting firm that audits its financial statements (the
          "Resources Auditors") to complete their audit such that they will date
          their opinion on Resources' audited annual financial statements on the
          same date that REI's Auditors date their opinion on REI's audited
          annual financial statements, and to enable REI to meet its timetable
          for the printing, filing and public dissemination of REI's annual
          financial statements. Resources shall use its reasonable commercial
          efforts to enable the Resources Auditors to complete their quarterly
          review procedures such that they will provide clearance on Resources'
          quarterly financial statements on the same date that REI's Auditors
          provide clearance on REI's quarterly financial statements.

               (iii) Resources shall provide to REI on a timely basis all
          Information that REI reasonably requires to meet its schedule for the
          preparation, printing, filing, and public dissemination of REI's
          annual and quarterly financial statements. Without limiting the
          generality of the foregoing, Resources will provide all required
          financial information with respect to Resources and its Subsidiaries
          to the Resources Auditors in a sufficient and reasonable time and in
          sufficient detail to permit the Resources Auditors to take all steps
          and perform all reviews necessary to provide sufficient assistance to
          REI's Auditors with respect to Information to be included or contained
          in REI's annual and quarterly financial statements. Similarly, REI
          shall provide to Resources on a timely basis all Information that
          Resources reasonably requires to meet its schedule for the
          preparation, printing, filing, and public dissemination of Resources'
          annual and quarterly financial statements. Without limiting the
          generality of the foregoing, REI will provide all required financial
          Information with respect to REI and its

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          Subsidiaries to REI's Auditors in a sufficient and reasonable time and
          in sufficient detail to permit REI's Auditors to take all steps and
          perform all reviews necessary to provide sufficient assistance to the
          Resources Auditors with respect to Information to be included or
          contained in Resources' annual and quarterly financial statements.

               (iv) Resources shall authorize the Resources Auditors to make
          available to REI's Auditors both the personnel who performed or are
          performing the annual audits and quarterly reviews of Resources and
          work papers related to the annual audits and quarterly reviews of
          Resources, in all cases within a reasonable time prior to the
          Resources Auditors' opinion date, so that REI's Auditors are able to
          perform the procedures they consider necessary to take responsibility
          for the work of the Resources Auditors as it relates to REI's
          Auditors' report on REI's financial statements, all within sufficient
          time to enable REI to meet its timetable for the printing, filing and
          public dissemination of REI's annual and quarterly statements.
          Similarly, REI shall authorize REI's Auditors to make available to the
          Resources Auditors both the personnel who performed or are performing
          the annual audits and quarterly reviews of REI and work papers related
          to the annual audits and quarterly reviews of REI, in all cases within
          a reasonable time prior to REI's Auditors' opinion date, so that the
          Resources Auditors are able to perform the procedures they consider
          necessary to take responsibility for the work of REI's Auditors as it
          relates to the Resources Auditors' report on Resources' financial
          statements, all within sufficient time to enable Resources to meet its
          timetable for the printing, filing and public dissemination of
          Resources' annual and quarterly financial statements.

               (v) Resources may not change its accounting principles or
          practices if a change in such accounting principle or practice would
          be required to be disclosed in Resources' financial statements as
          filed with the SEC or otherwise publicly disclosed therein without the
          prior written consent of REI, except for changes which are required by
          GAAP and as to which there is no discretion on the part of Resources,
          as concurred in by Resources Auditors prior to its implementation.
          Resources shall give REI as much prior notice as reasonably practical
          of any proposed determination of, or any significant changes in, its
          accounting estimates or, subject as aforesaid, accounting principles
          from those in effect on the Separation Date. Resources will consult
          with REI and, if requested by REI, Resources will consult with REI's
          Auditors with respect thereto. REI shall give Resources as much prior
          notice as reasonably practical of any proposed determination of, or
          any significant changes in, its accounting estimates or accounting
          principles from those in effect on the Separation Date.

               (vi) Nothing in Sections 10.3 and 10.4 shall require Resources to
          violate any agreement with any third parties regarding the
          confidentiality of confidential and proprietary information relating
          to that third party or its business; provided, however, that in the
          event that Resources is required under Sections 10.3 and 10.4 to
          disclose any such information, Resources shall use all commercially
          reasonable efforts to seek to obtain such third party's consent to the

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          disclosure of such information. Similarly, nothing in Sections 10.3
          and 10.4 shall require REI to violate any agreement with any third
          parties regarding the confidentiality of confidential and proprietary
          information relating to that third party or its business; provided,
          however, that in the event that REI is required under Sections 10.3
          and 10.4 to disclose any such information, REI shall use all
          commercially reasonable efforts to seek to obtain such third party's
          consent to the disclosure of such information.

          (b) For so long as REI beneficially owns shares representing 20% or
more of the voting power of the outstanding Resources Common Stock (i) Resources
will furnish REI within nine (9) business days after the end of each quarter and
eleven (11) business days after the end of each fiscal year, the unaudited
balance sheet, income statement and statement of cash flows of Resources and its
Subsidiaries as at the end of such period, (ii) Resources shall furnish to REI
such financial information or documents in the possession of Resources and any
of its Subsidiaries as REI may reasonably request, and (iii) Resources shall
furnish to REI on a monthly basis such management and other periodic reports
related to financial information in the form and substance consistent with the
practice of Resources as of the date of this Agreement. For so long as REI
beneficially owns shares representing 50% or more of the voting power of all of
the outstanding Resources Common Stock, Resources will furnish REI the
consolidated balance sheet, consolidated income statement and consolidated
statement of cash flows, if any, of Resources and its Subsidiaries as at the end
of each such quarterly and annual period in the form and substance consistent
with the practice of Resources as of the date of this Agreement.

     10.5 AUDIT RIGHTS. To the extent any member of the REI group provides goods
or services to any member of the Resources Group or any member of the Resources
Group provides goods or services to a member of the REI Group under this
Agreement or under any Ancillary Agreement, the company providing such goods or
services (the "Providing Company") shall maintain complete and accurate books
and records relating to costs and charges made to the company receiving such
goods and services (the "Receiving Company"). Books and accounts shall be
maintained in accordance with generally accepted accounting principles,
consistently applied, and to the extent such books and records relate to
regulated business activities, shall conform to any applicable regulatory code
of accounts which the Receiving Company is required to comply with, to the
extent such conformity is reasonably feasible. If conformity to a regulatory
code of accounts is infeasible, the Providing Company shall maintain its books
and records related to the provision of goods and services in such a manner that
the Receiving Company may readily reconcile such books and records to the
applicable code of accounts. Annually, the Receiving Company shall be entitled
to audit the Providing Company's books and records related to the goods and
services provided, using its own personnel or personnel from its independent
auditing firm. Discrepancies identified as a result of any audit shall be
promptly reconciled between the parties in accordance with any provisions of the
Ancillary Agreement or, if no such provision is applicable, in accordance with
the dispute resolution provisions of this Agreement. Any charge which is not
questioned by the Receiving Company within the calendar year after the charge
was rendered shall be deemed incontestable.

     10.6 PRESERVATION OF LEGAL PRIVILEGES. REI and Resources recognize that the
members of their respective groups possess and will possess information and
advice that has been previously developed but is legally protected from
disclosure under legal privileges, such as

                                       40
<PAGE>   47

the attorney-client privilege or work product exemption and other concepts of
legal protection ("Privilege"). Each party recognizes that they shall be jointly
entitled to the Privilege with respect to such privileged information and that
each shall be entitled to maintain and use for its own benefit all such
information and advice, but both parties shall ensure that such information is
maintained so as to protect the Privileges with respect to the other party's
interest. To that end neither party will knowingly waive or compromise any
Privilege associated with such information and advice without the consent of the
other party. In the event that privileged information is required to be
disclosed to any arbitrator or mediator in connection with a dispute between the
parties, such disclosure shall not be deemed a waiver of Privilege with respect
to such information, and any party receiving it in connection with a proceeding
shall be informed of its nature and shall be required to safeguard and protect
it.

     10.7 PAYMENT OF EXPENSES. Resources shall pay all underwriting fees,
discounts and commissions and other direct costs incurred in connection with the
IPO. Except as otherwise provided in this Agreement, the Ancillary Agreements or
any other agreement between the parties relating to the Separation, the IPO or
the Distribution, all other out-of-pocket costs and expenses of the parties
hereto in connection with the preparation of this Agreement and the Ancillary
Agreements, the Separation, the IPO and the Distribution shall be paid by REI.
Notwithstanding the foregoing, Resources shall pay any internal fees, costs and
expenses incurred by Resources in connection with the Separation, the IPO and
the Distribution.

     10.8 GOVERNMENTAL APPROVALS. The parties acknowledge that certain of the
transactions contemplated by this Agreement and the Ancillary Agreements are
subject to certain conditions established by applicable government regulations,
orders, and approvals ("Existing Authority"). The parties intend to implement
this Agreement, the Ancillary Agreements and the transactions contemplated
thereby consistent with and to the extent permitted by Existing Authority and to
cooperate toward obtaining and maintaining in effect such Governmental Approvals
as may be required in order to implement this Agreement and each of the
Ancillary Agreements as fully as possible in accordance with their respective
terms. To the extent that any of the transactions contemplated by this Agreement
or any Ancillary Agreement require any Governmental Approvals, the parties will
use their reasonable commercial efforts to obtain any such Governmental
Approvals.

     10.9 REGULATORY PROCEEDINGS. It is recognized and understood that high
levels of cooperation and assistance will be required between members of the REI
Group and the Resources Group in connection with Regulatory Proceedings
necessary to implement the Separation and the Business Separation Plan approved
by the PUCT and all matters relating to the Genco Option. During the period from
the Separation Date until an order issued by the PUCT in connection with the
stranded cost determination regarding the Genco Assets becomes final and
nonappealable, the parties agree as follows:

          (a) Upon reasonable request, members of the REI Group and of the
Resources Group will provide personnel, information and other assistance to
members of the other group in order to prepare, file and prosecute to completion
Regulatory Proceedings which are either (i) required to be filed under the
Utilities Code or under the Business Separation Plan or (ii) deemed by the
requesting party to be desirable to implement or preserve some aspect of the
Separation contemplated herein.

                                       41
<PAGE>   48

          (b) Assistance provided may, without limitation, relate to information
that has been transferred to or retained by the assisting party in the
separation or which the assisting party is uniquely qualified to provide in
connection with Regulatory Proceedings that relate to the Separation and its
implementation under the Utilities Code. Assistance may take the form of
developing, filing and giving testimony and reports to the PUCT or other
regulatory authority.

          (c) The appropriate members of the REI Group or the Resources Group
shall timely file with the PUCT or other regulatory authority or court and shall
prosecute to completion all Regulatory Proceedings required to implement the
Business Separation Plan approved by the PUCT, the Genco Option and the other
provisions of this Agreement, such as, without limitation, filings to terminate
the "Price To Beat" obligation, if appropriate, the determination of any
"clawback" related to retail customers served by Reliant Energy Retail Services,
and the determination of stranded costs related to the Genco Assets.

          (d) A member of the REI Group shall make all regulatory filings
contemplated above in this Section 10.9 except where a member of the Resources
Group is required by the Utilities Code to file separately or join in such
filings. A member of the REI Group will be responsible for the direction and
prosecution of all Regulatory Proceedings in which REI Group filings are made,
except as follows: A member of the Resources Group will be responsible for
filing on behalf of and in the name of the REI Group, and shall have sole
responsibility and control of the direction and prosecution of (i) any filing
pursuant to Utilities Code Section 39.202(j) and (ii) that portion of any filing
pursuant to Utilities Code Section 39.262(e) which pertains to the
reconciliation of the Price to Beat and market prices and the determination of
any credits to REI under that subsection. With respect to the filings specified
in the immediately preceding sentence, the Resources Group shall be entitled to
act for and be subrogated to the interests of the REI Group. A member of the
Resources Group will be responsible for filing in its own name and shall have
sole responsibility and control of proceedings to establish, revise or adjust
the Price to Beat.

          (e) Except as provided below, the party supplying assistance shall be
reimbursed for costs incurred in providing assistance. For time expended by its
personnel, the assisting party shall be reimbursed for actual salary costs, plus
payroll burdens and overhead allocations in accordance with its standard
procedures for reimbursing other members of its group. Services provided for
information technology or other internal services shall be charged in the same
manner they would be charged among the members of the providing company's Group,
and out of pocket costs paid to third parties shall be reimbursed at actual
cost.

          (f) The party requesting assistance shall endeavor to minimize the
impacts of such assistance on the other business needs of the assisting party.

          (g) Until the issuance of a Final Order determining the stranded costs
with respect to the Genco Assets (the "Stranded Cost Order"), no member of the
REI Group or the Resources Group will, directly or indirectly, without express
written permission, assert a position which is adverse to the position of a
member of the other in a Regulatory Proceeding before the PUCT, the Texas
Legislature or any other regulatory authority having jurisdiction over a member
of such Group, with respect to amendment or other revision to Senate Bill 7 or
the Utilities Code.

                                       42
<PAGE>   49

          (h) Until the issuance of the Stranded Cost Order, no member of the
Resources Group will, directly or indirectly, without the express written
permission of REI, assert a position which is adverse to the position of a
member of the REI Group in Regulatory Proceedings before the PUCT or any other
regulatory authority having jurisdiction over a member of the REI Group with
respect to the following matters: (i) stranded cost quantification or recovery
or (ii) the proper level or components of T&D Utility rates, provided, however,
that positions taken by a member of the Resources Group relating solely to the
allocation of costs or the use of a rate design consistent with Price to Beat
rate designs will not be considered adverse positions even if such positions
differ from those asserted by members of the REI Group. REI will not
unreasonably withhold permission for a member of the Resources Group to take
positions which may be indirectly adverse to its own position. In any T&D
Utility rate case that proposes rates to be effective prior to the issuance of
the Stranded Cost Order, any direct case presented by the REI Group shall be
based upon a T&D Utility rate design that is substantially similar to either the
Price to Beat rate design or the rate design approved by the PUCT in PUCT Docket
No. 22355.

     10.10 CONTINUANCE OF REI CREDIT SUPPORT; BORROWINGS. Notwithstanding any
other provision of this Agreement or the provisions of any Ancillary Agreement
to the contrary, the parties hereby agree that REI and each Subsidiary of REI
shall maintain in full force and effect each guarantee, letter of credit,
keepwell or support agreement or other credit support document, instrument or
other similar arrangement issued for the benefit of any Person in the Resources
Group by or on behalf of REI or a Subsidiary of REI (the "Credit Support
Arrangements") which is outstanding as of the Separation Date, until the earlier
of (a) such time as such Credit Support Arrangement terminates in accordance
with its terms or is otherwise released at the request of Resources or (b) the
Distribution Date; provided, that Resources shall use commercially reasonable
efforts, at the request of REI, to attempt to release or replace any Credit
Support Arrangement for which such replacement or release is reasonably
available. All such obligations shall be deemed Resources Liabilities. For so
long as REI or any Subsidiary of REI remains liable with respect to any such
Credit Support Arrangement, (1) Resources shall pay, or cause the Person in the
Resources Group for whose benefit the Credit Support Arrangement is provided to
pay, the underlying obligation as and when the same shall become due and
payable, to the end that neither REI nor such Subsidiary of REI shall be
required to make any payment under or by reason of its obligation under such
Credit Support Arrangement and (2) REI or such Subsidiary shall retain all
rights of reimbursement and subrogation it may have, whether arising by law, by
contract or otherwise, with respect to such Credit Support Arrangement and such
rights shall be enforceable against Resources as well as the Subsidiary of
Resources for whose benefit the Credit Support Arrangement was made. Members of
the REI Group may advance funds to or borrow funds from members of the Resources
Group from time to time at market-based rates; provided, however, that except as
provided in the Genco Option Agreement, no member of the REI Group or the
Resources Group shall have any obligation to do so.

To the extent covenants and agreements contained in any loan or credit agreement
or other financing document in effect on the date of this Agreement to which any
member of the REI Group is a party requires, or requires such party to cause,
any member of the Resources Group to take or refrain from taking any action, or
provides for a default or event of default if any member of the Resources Group
takes or refrains from taking any action, such member of the Resources

                                       43
<PAGE>   50

Group shall at all times prior to the Distribution Date, take or refrain from
taking any such action as would result in a breach or violation of, or a default
under, such agreement.

     10.11 CERTAIN NON-COMPETITION PROVISIONS; FREEDOM OF ACTION. In order to
preserve the separation of its Texas businesses as contemplated in the Business
Separation Plan as approved by the PUCT and to protect the goodwill associated
with the separate businesses, for a period of three years after the Choice Date
the parties agree that they will conduct their respective businesses as follows:

          (a) Neither REI, Regco nor any Affiliate or successor in interest of
REI or Regco will sell electricity at retail or provide data, voice or video
transmission services as a commercial activity for profit to retail customers
within the State of Texas, and

          (b) Neither REI, Regco nor any Affiliate or successor in interest of
REI or Regco will acquire or operate any electric generating facilities within
the State of Texas other than the Genco Assets;

provided, however, neither REI nor Resources shall be restricted from providing
natural gas and other non-electric energy commodities, and REI and its
affiliates shall not be restricted from providing fuel cells, microturbines and
similar distributed generating devices having an individual unit capacity less
than 10 MW, including the installation, operation and maintenance associated
with those devices. Nor shall REI and its Affiliates be precluded from providing
energy services of the type and character currently being provided so long as it
does not provide sales of electricity to customers as a Retail Electric
Provider.

     10.12 CLAWBACK PAYMENT. Resources will pay to REI the lesser of (i) the
amount required to be credited to REI by its affiliated retail electric provider
pursuant to Section 39.262(e) of the Utilities Code promptly following the
determination that such a payment is owed and the amount thereof and (ii) $150
multiplied by the number of residential or small commercial customers served by
the affiliated transmission and distribution utility that are buying electricity
from the affiliated retail electric provider at the price to beat on the second
anniversary of the beginning of competition, minus the number of new customers
obtained outside the service area.

     10.13 NUCLEAR DECOMMISSIONING TRUST AND INVESTMENT. Upon transfer of the
Genco Assets to Genco LP, all rights and obligations associated with REI's
interest in the South Texas Project Electric Generating Station shall become the
rights and obligations of Genco LP, including, without limitation, the interest
of beneficiary under that certain Trust Agreement, originally dated as of July
2, 1990, as amended and restated to date, between Houston Lighting & Power
Company and Mellon Bank, N.A., as Trustee. That Trust Agreement, commonly
referred to as the "STP Decommissioning Trust," provides for the funding of
REI's share of the costs of decontamination and decommissioning of STP. As owner
of STP, Genco shall maintain the STP Decommissioning Trust in accordance with
NRC requirements and shall order disbursements of funds as provided in the STP
Decommissioning Trust and NRC regulations. REI shall continue to collect through
rates, or other authorized charges to customers, amounts designated for funding
the STP Decommissioning Trust, and shall promptly pay all such

                                       44
<PAGE>   51

amounts that it collects to Genco. Genco shall deposit and maintain all such
amounts with the Trustee under the STP Decommissioning Trust.

     Under the STP Decommissioning Trust, REI has appointed an Investment
Advisory Committee to provide guidelines for the Trustee in the investment of
the trust funds. Genco shall maintain that Investment Advisory Committee as a
four-member committee, and following the Restructuring, Genco and REI shall each
appoint two representatives to the Investment Advisory Committee.

     Upon decommissioning of STP, in the event that funds from the STP
Decommissioning Trust should prove inadequate to fund Genco's obligations under
the terms of its NRC license and NRC regulations, REI shall collect through
rates, or other authorized charges to customers, as contemplated by Section
39.205 of the Utilities Code, all additional amounts required to fund Genco's
obligations related to the decommissioning of STP and pay all amounts so
collected to Genco, and shall indemnify Genco from and against any obligations
related to such decommissioning not otherwise satisfied through such collections
and pay over the amount of any such shortfall to Genco upon request. Following
the completion of decommissioning, if surplus funds remain in the STP
Decommissioning Trust, such excess shall be refunded to REI.

     10.14 AUCTIONS OF CAPACITY. Prior to the Option Expiration Date, Genco LP
(and Genco, as applicable) shall auction all its capacity to purchasers other
than Regco or an Affiliate of Regco on the following terms:

          (a) 15% REQUIREMENT: Fifteen percent (15%) of its capacity shall be
auctioned in accordance with rules prescribed by the PUCT so long as the PUCT
rules require an affiliated Power Generation Company to auction capacity.
Resources shall not be entitled to participate in or reserve for itself any
portion of such capacity that is offered pursuant to PUCT requirements.

          (b) REMAINING CAPACITY AUCTION: After deducting capacity required to
satisfy operational requirements associated with the capacity auctioned pursuant
to PUCT rules, including without limitation the capacity auction and Price to
Beat rules and the obligation under the Agreement for Spinning Reserve Service
with Central Power and Light Company dated December 30, 1992, the remaining
capacity and related ancillary services shall be auctioned to purchasers other
than Regco. Prior to each such auction, Genco LP (and Genco, as applicable)
shall determine the types of products to be auctioned, taking into consideration
anticipated market demand and the Auction Principles included in Schedule
10.14(b). Terms and conditions for the remaining capacity auction shall be
established by Genco LP (and Genco, as applicable), and reasonable notice of the
products and terms for the auction will be given to Resources but no less than
ten business days prior to the scheduled auction date.

          (c) ENTITLEMENT AND OBLIGATIONS OF RESOURCES: Resources shall be
entitled to purchase at the prices established in each auction fifty percent
(50%) (but not less than such percentage) of the capacity auctioned. To exercise
its entitlement, Resources will notify Genco LP (and Genco, as applicable)
whether it elects to purchase fifty percent (50%) of each product auctioned, and
Genco LP (and Genco, as applicable) shall exclude such capacity from the
auction. Resources shall give such notification no later than three business
days prior to the date

                                       45
<PAGE>   52

of the auction. Any portion of the capacity that Resources does not reserve
through such notification shall be auctioned along with the balance of the
capacity being auctioned. Upon determination of auction prices for the products
auctioned, Resources shall be obligated to purchase the capacity it elected to
reserve from the auction process at the prices set during the auction for that
product. If energy and ancillary services are auctioned separately by Genco LP
(and Genco, as applicable), Resources shall be entitled to participate in fifty
percent (50%) of the offered capacity of each. In addition to its reservation of
capacity, and whether or not it has reserved capacity in the auction, Resources
shall be entitled to participate in each auction of the remaining capacity.

     If Resources exercises the Genco Option, then after the Option Exercise
Date and until the Option Closing Date occurs or the Option terminates pursuant
to the Genco Option Agreement, Genco shall conduct no auctions of capacity other
than those required pursuant to PUCT rules without consulting with Resources and
obtaining its reasonable concurrence, not to be unreasonably withheld.

          (d) COMPLIANCE WITH PUCT RULES. In the event the rules of the PUCT
relating to Price to Beat do not allow for the fuel factor to be adjusted based
on the auction of capacity as contemplated in this Section 10.14 or in the event
the PUCT, by rule or order, otherwise indicates that the auction of capacity as
contemplated in this Section 10.14 would be inconsistent with its requirements,
Genco LP (or Genco, as applicable) shall, in consultation with Resources, modify
the auction procedures set forth herein or, if an auction would not be
acceptable, Resources and Genco LP (or Genco, as applicable) will use their best
efforts to reach agreement on a power purchase agreement which would satisfy
PUCT requirements and preserve, as nearly as possible, Resources' entitlement to
obtain 50 percent of Genco's available capacity at market prices.

          (e) RECONCILIATION PAYMENT OBLIGATIONS. Genco or its parent company
shall reconcile any difference between the price of power obtained through
capacity auctions required by PUCT rules with the PUCT's ECOM model, as required
by PUCT rules, and Genco or its parent company shall pay to REI, or REI shall
pay to Genco or its parent company as appropriate, the difference between such
amounts during the period, to the extent and in the manner required by rules of
the PUCT.

     10.15 CONFIDENTIALITY.

          (a) REI and Resources shall hold and shall cause the members of the
REI Group and the Resources Group, respectively, to hold, and shall each cause
their respective officers, employees, agents, consultants and advisors to hold,
in strict confidence and not to disclose or release without the prior written
consent of the other party, any and all Confidential Information (as defined
herein); provided, that the parties may disclose, or may permit disclosure of,
Confidential Information (i) to their respective auditors, attorneys, financial
advisors, bankers and other appropriate consultants and advisors who have a need
to know such information and are informed of their obligation to hold such
information confidential to the same extent as is applicable to the parties
hereto and in respect of whose failure to comply with such obligations, REI or
Resources, as the case may be, will be responsible or (ii) to the extent any
member of the REI Group or the Resources Group is compelled to disclose any such
Confidential Information

                                       46
<PAGE>   53

by judicial or administrative process or, in the opinion of legal counsel, by
other requirements of law. Notwithstanding the foregoing, in the event that any
demand or request for disclosure of Confidential Information is made pursuant to
clause (ii) above, REI or Resources, as the case may be, shall promptly notify
the other of the existence of such request or demand and shall provide the other
a reasonable opportunity to seek an appropriate protective order or other
remedy, which both parties will cooperate in seeking to obtain. In the event
that such appropriate protective order or other remedy is not obtained, the
party whose Confidential Information is required to be disclosed shall or shall
cause the other party to furnish, or cause to be furnished, only that portion of
the Confidential Information that is legally required to be disclosed. As used
in this Section 10.15, "Confidential Information" shall mean all proprietary,
technical or operational information, data or material of one party which, prior
to or following the IPO Closing Date, has been disclosed by REI or members of
the REI Group, on the one hand, or Resources or members of the Resources Group,
on the other hand, in written, oral (including by recording), electronic, or
visual form to, or otherwise has come into the possession of, the other,
including pursuant to the access provisions of Section 10.3 hereof or any other
provision of this Agreement (except to the extent that such Information can be
shown to have been (a) in the public domain through no fault of such party (or,
in the case of REI, any other member of the REI Group or, in the case of
Resources, any other member of the Resources Group) or (b) later lawfully
acquired from other sources by the party (or, in the case of REI, such member of
the REI Group or, in the case of Resources, such member of the Resources Group)
to which it was furnished; provided, however, in the case of (b) that such
sources did not provide such Information in breach of any confidentiality
obligations).

          (b) Notwithstanding anything to the contrary set forth herein, (i) REI
and the other members of the REI Group, on the one hand, and Resources and the
other members of the Resources Group, on the other hand, shall be deemed to have
satisfied their obligations hereunder with respect to Confidential Information
if they exercise the same degree of care (but no less than a reasonable degree
of care) as they take to preserve confidentiality for their own similar
Information and (ii) confidentiality obligations provided for in any agreement
between REI or any other member of the REI Group, or Resources or any other
members of the Resources Group, on the one hand, and any employee of REI or any
other member of the REI Group, or Resources or any other members of the
Resources Group, on the other hand, shall remain in full force and effect.
Confidential Information of REI or any other member of the REI Group, on the one
hand, or Resources or any other member of the Resources Group, on the other
hand, in the possession of and used by the other as of the IPO Closing Date may
continue to be used by such Person in possession of the Confidential Information
in and only in the operation of the REI Business or the Resources Business, as
the case may be, and may be used only so long as the Confidential Information is
maintained in confidence and not disclosed in violation of Section 10.15(a).
Such continued right to use may not be transferred to any third party unless the
third party purchases all or substantially all of the business and assets in
which the relevant Confidential Information is used or employed in one
transaction or in a series or related transactions. In the event that such right
to use is transferred in accordance with the preceding sentence, the
transferring party shall not disclose the source of the relevant Confidential
Information.

     10.16 1000 MAIN LEASE. As soon as reasonably practicable, following the
IPO, REI will transfer and assign to Resources the Lease Agreement dated as of
February 26, 2001

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<PAGE>   54

between Main/Lamar Partnership, L.P. and REI (the "1000 Main Lease") and
Resources will assume the obligations of REI thereunder. Such assignment shall
be made pursuant to the provisions of Section 8.1.1 of the 1000 Main Lease.
Resources will concurrently deliver to the landlord under such 1000 Main Lease a
confirmation of assignment and assumption pursuant to Section 8.1.1 of the 1000
Main Lease and will take such action as REI may reasonably request to establish
the satisfaction of the Release Conditions referred to therein.

                                   ARTICLE XI

                                  MISCELLANEOUS

     11.1 LIMITATION OF LIABILITY. EXCEPT TO THE EXTENT SPECIFICALLY PROVIDED IN
ANY ANCILLARY AGREEMENT IN NO EVENT SHALL ANY MEMBER OF THE REI GROUP OR THE
RESOURCES GROUP OR THEIR RESPECTIVE DIRECTORS, OFFICERS AND EMPLOYEES BE LIABLE
TO ANY OTHER MEMBER OF THE REI GROUP OR THE RESOURCES GROUP FOR ANY SPECIAL,
CONSEQUENTIAL, INDIRECT, INCIDENTAL OR PUNITIVE DAMAGES OR LOST PROFITS, HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY (INCLUDING NEGLIGENCE) ARISING IN ANY WAY
OUT OF THIS AGREEMENT, WHETHER OR NOT SUCH PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES; PROVIDED, HOWEVER, THAT THE FOREGOING LIMITATIONS
SHALL NOT LIMIT EACH PARTY'S INDEMNIFICATION OBLIGATIONS FOR LIABILITIES TO
THIRD PARTIES AS SET FORTH IN THIS AGREEMENT OR ANY ANCILLARY AGREEMENT.

     11.2 ENTIRE AGREEMENT. This Agreement, the other Ancillary Agreements and
the Exhibits and Schedules referenced or attached hereto and thereto,
constitutes the entire agreement between the parties with respect to the subject
matter hereof and shall supersede all prior written and oral and all
contemporaneous oral agreements and understandings with respect to the subject
matter hereof.

     11.3 GOVERNING LAW. This Agreement shall be governed and construed and
enforced in accordance with the laws of the State of Texas as to all matters
regardless of the laws that might otherwise govern under the principles of
conflicts of laws applicable thereto.

     11.4 TERMINATION. This Agreement and all Ancillary Agreements may be
terminated at any time prior to the IPO Closing Date by and in the sole
discretion of REI without the approval of Resources. This Agreement may be
terminated at any time after the IPO Closing Date by mutual consent of REI and
Resources. In the event of termination pursuant to this Section, neither party
shall have any liability of any kind to the other party.

     11.5 NOTICES. Unless expressly provided herein, all notices, claims,
certificates, requests, demands and other communications hereunder shall be in
writing and shall be deemed to be duly given (i) when personally delivered or
(ii) if mailed registered or certified mail, postage prepaid, return receipt
requested, on the date the return receipt is executed or the letter refused by
the addressee or its agent or (iii) if sent by overnight courier which delivers
only upon the signed receipt of the addressee, on the date the receipt
acknowledgment is executed or refused by the addressee or its agent or (iv) if
sent by facsimile or other generally accepted

                                       48
<PAGE>   55

means of electronic transmission, on the date confirmation of transmission is
received (provided that a copy of any notice delivered pursuant to this clause
(iv) shall also be sent pursuant to clause (ii) or (iii)), addressed to the
attention of the addressee's General Counsel at the address of its principal
executive office or to such other address or facsimile number for a party as it
shall have specified by like notice.

     11.6 COUNTERPARTS. This Agreement, including the Schedules and Exhibits
hereto and the other documents referred to herein, may be executed in
counterparts, each of which shall be deemed to be an original but all of which
shall constitute one and the same agreement.

     11.7 BINDING EFFECT; ASSIGNMENT. This Agreement shall inure to the benefit
of and be binding upon the parties hereto and their respective legal
representatives and successors, and nothing in this Agreement, express or
implied, is intended to confer upon any other Person any rights or remedies of
any nature whatsoever under or by reason of this Agreement. This Agreement may
not be assigned by any party hereto.

     11.8 SEVERABILITY. If any term or other provision of this Agreement or the
Schedules or Exhibits attached hereto is determined by a nonappealable decision
by a court, administrative agency or arbitrator to be invalid, illegal or
incapable of being enforced by any rule of law or public policy, all other
conditions and provisions of this Agreement shall nevertheless remain in full
force and effect so long as the economic or legal substance of the transactions
contemplated hereby is not affected in any manner materially adverse to either
party. Upon such determination that any term or other provision is invalid,
illegal or incapable of being enforced, the parties hereto shall negotiate in
good faith to modify this Agreement so as to effect the original intent of the
parties as closely as possible in an acceptable manner to the end that
transactions contemplated hereby are fulfilled to the fullest extent possible.

     11.9 FAILURE OR INDULGENCE NOT WAIVER; REMEDIES CUMULATIVE. No failure or
delay on the part of either party hereto in the exercise of any right hereunder
shall impair such right or be construed to be a waiver of, or acquiescence in,
any breach of any representation, warranty or agreement herein, nor shall any
single or partial exercise of any such right preclude other or further exercise
thereof or of any other right. All rights and remedies existing under this
Agreement or the Schedules or Exhibits attached hereto are cumulative to, and
not exclusive of, any rights or remedies otherwise available.

     11.10 AMENDMENT. No change or amendment will be made to this Agreement
except by an instrument in writing signed on behalf of each of the parties to
this Agreement.

     11.11 AUTHORITY. Each of the parties hereto represents to the other that
(a) it has the corporate or other requisite power and authority to execute,
deliver and perform this Agreement and the Ancillary Agreements, (b) the
execution, delivery and performance of this Agreement and the Ancillary
Agreements by it have been duly authorized by all necessary corporate or other
actions, (c) it has duly and validly executed and delivered this Agreement and
the Ancillary Agreements to be executed and delivered on or prior to the
Separation Date, and (d) this Agreement and such Ancillary Agreements are legal,
valid and binding obligations, enforceable against it in accordance with their
respective terms subject to applicable bankruptcy, insolvency,

                                       49
<PAGE>   56

reorganization, moratorium or other similar laws affecting creditors' rights
generally and general equity principles.

     11.12 INTERPRETATION. The headings contained in this Agreement, in any
Exhibit or Schedule hereto and in the table of contents to this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement. Any capitalized term used in any Schedule or
Exhibit but not otherwise defined therein, shall have the meaning assigned to
such term in this Agreement. When a reference is made in this Agreement to an
Article or a Section, Exhibit or Schedule, such reference shall be to an Article
or Section of, or an Exhibit or Schedule to, this Agreement unless otherwise
indicated.

     11.13 CONFLICTING AGREEMENTS. In the event of conflict between this
Agreement and any Ancillary Agreement or other agreement executed in connection
herewith, the provisions of such other agreement shall prevail.

     WHEREFORE, the parties have signed this Master Separation Agreement
effective as of the date first set forth above.

                           RELIANT ENERGY, INCORPORATED

                           By:  /s/ David M. McClanahan
                                ------------------------------------------------
                                David M. McClanahan
                                Vice Chairman

                           RELIANT RESOURCES, INC.

                           By:  /s/ R. S. Letbetter
                                ------------------------------------------------
                                R. S. Letbetter
                                Chairman, President and
                                  Chief Executive Officer

                                       50

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