EXHIBIT 4.2

                               NORAM ENERGY CORP.

                                       To

                   CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,
                                    Trustee

                               __________________

                          SUPPLEMENTAL INDENTURE No. 1

                          Dated as of February 1, 1998

                               _________________



                     6 1/2% Debentures due February 1, 2008

                                  $300,000,000

 
                               NORAM ENERGY CORP.

                          SUPPLEMENTAL INDENTURE No. 1

                                  $300,000,000

                     6 1/2% Debentures due February 1, 2008



     SUPPLEMENTAL INDENTURE No. 1, dated as of February 1, 1998, between NORAM
ENERGY CORP., a Delaware corporation (the "Company"), and CHASE BANK OF TEXAS,
NATIONAL ASSOCIATION (formerly known as Texas Commerce Bank National
Association), a national banking association duly organized and existing under
the laws of the United States of America, as Trustee (the "Trustee").


                                    Recitals
                                    --------


     The Company has heretofore executed and delivered to the Trustee an
Indenture, dated as of February 1, 1998 (the "Indenture"), providing for the
issuance from time to time of one or more series of the Company's Securities.

     Section 301 of the Indenture provides that various matters with respect to
any series of Securities issued under the Indenture may be established in an
indenture supplemental to the Indenture.

     Section 901(7) of the Indenture provides that the Company and the Trustee
may enter into an indenture supplemental to the Indenture to establish the form
or terms of Securities of any series as permitted by Sections 201 and 301 of the
Indenture.

     For and in consideration of the premises and the issuance of the series of
Securities provided for herein, it is mutually covenanted and agreed, for the
equal and proportionate benefit of the Holders of the Securities of such series,
as follows:


                                   ARTICLE 1

                       Relation to Indenture; Definitions

     Section 101.  This Supplemental Indenture No. 1 constitutes an integral
part of the Indenture.

                                      -1-

 
     Section 102.  For all purposes of this Supplemental Indenture  No. 1:

          (1) Capitalized terms used herein shall have the meanings specified
     herein or in the Indenture, as the case may be;

          (2) "Consolidated Net Tangible Assets" means the total amount of
     assets of the Company and its Subsidiaries less, without duplication:  (a)
     total current liabilities (excluding indebtedness due within 12 months);
     (b) all reserves for depreciation and other asset valuation reserves but,
     excluding reserves for deferred federal income taxes arising from
     accelerated amortization or otherwise; (c) all intangible assets such as
     goodwill, trademarks, trade names, patents and unamortized debt discount
     and expense carried as an asset; and (d) all appropriate adjustments on
     account of minority interests of other Persons holding common stock of any
     Subsidiary, all as reflected in the Company's most recent audited
     consolidated balance sheet preceding the date of such determination;

          (3) The term "indebtedness," as applied to the Company or any
     Subsidiary, means bonds, debentures, notes and other instruments
     representing obligations created or assumed by any such corporation (i) for
     money borrowed (other than unamortized debt discount or premium); (ii)
     evidenced by a note or similar instrument given in connection with the
     acquisition of any business, properties or assets of any kind; (iii) as
     lessee under leases required to be capitalized on the balance sheet of the
     lessee under generally accepted accounting principles; and (iv) any
     amendments, renewals, extensions, modifications and refundings of any such
     indebtedness or obligation listed in clause (i), (ii) or (iii) above.  All
     indebtedness secured by a lien upon property owned by the Company or any
     Subsidiary and upon which indebtedness any such corporation customarily
     pays interest, although any such corporation has not assumed or become
     liable for the payment of such indebtedness, shall for all purposes hereof
     be deemed to be indebtedness of any such corporation.  All indebtedness for
     borrowed money incurred by other Persons which is directly guaranteed as to
     payment of principal by the Company or any Subsidiary shall for all
     purposes hereof be deemed to be indebtedness of any such corporation, but
     no other contingent obligation of any such corporation in respect of
     indebtedness incurred by other Persons shall for any purpose be deemed to
     be indebtedness of such corporation.  Indebtedness of the Company or any
     Subsidiary shall not include (i) amounts which are payable only out of all
     or a portion of the oil, gas, natural gas, helium, coal, metals, minerals,
     steam, timber, hydrocarbons, or geothermal or other natural resources
     produced, derived or extracted from properties owned or developed by such
     corporation; (ii) any indebtedness incurred to finance oil, gas, natural
     gas, helium, coal, metals, minerals, steam, timber, hydrocarbons, or
     geothermal or other natural resources or synthetic fuel exploration or
     development, payable, with respect to principal and interest, solely out of
     the proceeds of oil, gas, natural gas, helium, coal, metals, minerals,
     steam, timber, hydrocarbons, or geothermal or other natural resources or
     synthetic fuel to be produced, sold, and/or delivered by the Company or any
     Subsidiary; (iii) indirect guarantees or other contingent obligations in
     connection with the indebtedness of others, including agreements,
     contingent or otherwise, with such Persons or with third Persons with
 

                                      -2-

 
     respect to, or to permit or insure the payment of, obligations of such
     other Persons, including, without limitation, agreements to advance or
     supply funds to or to invest in such other Persons, or agreements to pay
     for property, products or services of such other Persons (whether or not
     conferred, delivered or rendered), and any demand charge, throughput, take-
     or-pay, keep-well, make-whole, cash deficiency, maintenance of working
     capital or earnings or similar agreements; and (iv) any guarantees with
     respect to lease or other similar periodic payments to be made by other
     Persons;

          (4) "NorAm Long-Term Indebtedness" means, collectively, the Company's
     outstanding:  (a) Medium-Term Notes, Series A and B (due through 2001), (b)
     8.875% Notes due 1999, (c) 7 1/2% Notes due 2000, (d) 8.90% Debentures due
     2006, (e) 10% Debentures due 2019, (f) Term Loan (due November 1998) under
     that certain $150,000,000 Term Loan Agreement, dated as of May 15, 1997, as
     amended, among the Company, Citibank, N.A., as Agent, and various lenders
     party thereto and (g) any long-term indebtedness (but excluding for this
     purpose any long-term indebtedness, if any, incurred pursuant to any
     revolving credit facility, letter of credit facility or other similar bank
     credit facility) of the Company issued subsequent to the Debentures and
     prior to the Termination Date containing covenants substantially similar to
     the covenants set forth in Sections 214 and 215 hereof, but not containing
     a provision substantially similar to the provision set forth in Section 216
     hereof;

          (5) "Principal Property" means any natural gas distribution property,
     natural gas pipeline or gas processing plant located in the United States,
     except any such property that in the opinion of the Board of Directors is
     not of material importance to the total business conducted by the Company
     and its consolidated Subsidiaries.  "Principal Property" shall not include
     any oil or gas property or the production or proceeds of production from an
     oil or gas producing property or the production or any proceeds of
     production of gas processing plants or oil or gas or petroleum products in
     any pipeline or storage field;

          (6) "Restricted Subsidiary" means any Subsidiary which owns a
     Principal Property;

          (7) "Sale and Leaseback Transaction" means any arrangement with any
     Person providing for the leasing to the Company or any Restricted
     Subsidiary of any Principal Property (except for temporary leases for a
     term, including any renewal thereof, of not more than three years and
     except for leases between the Company and a Restricted Subsidiary or
     between Restricted Subsidiaries), which Principal Property has been or is
     to be sold or transferred by the Company or such Restricted Subsidiary to
     such Person;

          (8) All references herein to Articles and Sections, unless otherwise
     specified, refer to the corresponding Articles and Sections of this
     Supplemental Indenture No. 1; and

          (9) The terms "herein", "hereof", "hereunder" and other words of
     similar import refer to this Supplemental Indenture No. 1.

                                      -3-

 
                                   ARTICLE 2

                           The Series of Securities

     Section 201.  Title of the Securities.  There shall be a series of
Securities designated the "6 1/2% Debentures due February 1, 2008" (the
"Debentures").

     Section 202.  Limitation on Aggregate Principal Amount.  The aggregate
principal amount of the Debentures shall be limited to $300,000,000; provided,
however, that the authorized aggregate principal amount of the Debentures may be
increased above such amount by a Board Resolution to such effect.

     Section 203.  Stated Maturity.  The Stated Maturity of the Debentures shall
be February 1, 2008.

     Section 204.  Interest and Interest Rates.  The rate of interest on each
Debenture shall be 6 1/2% per annum, accruing from February 10, 1998 and
interest shall be payable, semi-annually in arrears, on February 1 and August 1,
of each year (each such date, an "Interest Payment Date"), commencing August 1,
1998 to the Persons in whose names the Debentures are registered at the close of
business on the immediately preceding January 15 and July 15, respectively,
whether or not such day is a Business Day (each such date, a "Regular Record
Date").  The amount of interest payable for any period shall be computed on the
basis of twelve 30-day months and a 360-day year. The amount of interest payable
for any partial period shall be computed on the basis of a 360-day year of
twelve 30-day months and the days elapsed in any partial month. In the event
that any date on which interest is payable on a Debenture is not a Business Day,
then a payment of the interest payable on such date will be made on the next
succeeding day which is a Business Day (and without any interest or other
payment in respect of any such delay) with the same force and effect as if made
on the date the payment was originally payable. The interest so payable, and
punctually paid or duly provided for, on any Interest Payment Date will be paid
to the Person in whose name such Debenture (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest. 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 (i) be paid to the Person in whose name such Debenture (or one
or more Predecessor Securities) is registered at the close of business on the
Special Record Date for the payment of such Defaulted Interest to be fixed by
the Trustee, notice whereof shall be given to Holders of the Debentures not less
than 10 days prior to such Special Record Date, or (ii) be paid at such time in
any other lawful manner not inconsistent with the requirements of any securities
exchange or automated quotation system on which the Debentures may be listed or
traded, and upon such notice as may be required by such exchange or automated
quotation system, all as more fully provided in the Indenture.

                                      -4-

 
     Section 205.  Place of Payment.  The Place of Payment where the Debentures
may be presented or surrendered for payment shall be Houston Industries Plaza,
c/o Office of Investor Services, 1111 Louisiana 44th Floor, Houston, Texas
77002.

     Section 206.  Place of Registration or Exchange; Notices and Demands With
Respect to the Debentures.  The place where the Holders of the Debentures may
present the Debentures for registration of transfer or exchange and may make
notices and demands to or upon the Company in respect of the Debentures shall be
the Corporate Trust Office of the Trustee.

     Section 207.  Percentage of Principal Amount.  The Debentures shall be
issued at 99.836% of their principal amount.

     Section 208.  Global Securities.  The Debentures shall be issuable in whole
or in part in the form of one or more Global Securities.  Such Global Securities
shall be deposited with, or on behalf of, The Depository Trust Company, New
York, New York, which shall act as Depositary with respect to the Debentures.
Such Global Securities shall bear the legends set forth in the form of Security
attached as Exhibit A hereto.

     Section 209.  Form of Securities.  The Debentures shall be substantially in
the form attached as Exhibit A hereto.

     Section 210.  Securities Registrar.  The Trustee shall initially serve as
Securities Registrar.

     Section 211.  Defeasance and Discharge; Covenant Defeasance.  Article
Fourteen of the Indenture, including without limitation, Sections 1402 and 1403
thereof, shall apply to the Debentures.

     Section 212.  Maintenance of Properties.  The Company shall cause all
properties used or useful in the conduct of its business or the business of any
Subsidiary to be maintained and kept in good condition, repair and working order
and supplied with all necessary equipment and shall cause to be made all
necessary repairs, renewals, replacements, betterments and improvements thereof,
all as in the judgment of the Company may be necessary so that the business
carried on in connection therewith may be properly conducted at all times;
provided, however, that nothing in this Section shall prevent the Company from
discontinuing the operation or maintenance of any of such properties if such
discontinuance is, in the judgment of the Company, desirable in the conduct of
its business or the business of any Subsidiary.

     Section 213.  Payment of Taxes and Other Claims.  The Company shall pay or
discharge or cause to be paid or discharged, before the same shall become
delinquent, (1) all taxes, assessments and governmental charges levied or
imposed upon the Company or any Subsidiary or upon the income, profits or
property of the Company or any Subsidiary, and (2) all lawful claims for labor,
materials and supplies which, if unpaid, might by law become a lien upon the
property of the Company or any Subsidiary; provided, however, that the Company
shall not be required to pay or

                                      -5-

 
discharge or cause to be paid or discharged any such tax, assessment, charge
or claim whose amount, applicability or validity is being contested in good
faith by appropriate proceedings.

     Section 214.  Restrictions on Liens.  The Company shall not pledge,
mortgage or hypothecate, or permit to exist, and shall not cause, suffer or
permit any Restricted Subsidiary to pledge, mortgage or hypothecate, or permit
to exist, except in favor of the Company or any Restricted Subsidiary, any
mortgage, pledge, lien or other encumbrance (collectively, a "lien" or "liens")
upon, any Principal Property at any time owned by it or a Restricted Subsidiary,
to secure any indebtedness, without making effective provisions whereby the
Debentures shall be equally and ratably secured with or prior to any and all
such indebtedness and any other indebtedness similarly entitled to be equally
and ratably secured; provided, however, that this provision shall not apply to
or prevent the creation or existence of:

          (a) undetermined or inchoate liens and charges incidental to
     construction, maintenance, development or operation;

          (b) the lien of taxes and assessments for the then current year;

          (c) the lien of taxes and assessments not at the time delinquent;

          (d) the lien of specified taxes and assessments which are delinquent
     but the validity of which is being contested at the time by the Company or
     such Restricted Subsidiary in good faith and by appropriate proceedings;

          (e) the lien reserved in leases for rent and for compliance with the
     terms of the lease in the case of leasehold estates;

          (f) any obligations or duties, affecting the property of the Company
     or such Restricted Subsidiary, to any municipality or public authority with
     respect to any franchise, grant, license, permit or similar arrangement;

          (g) the liens of any judgments or attachment in an aggregate amount
     not in excess of $10,000,000, or the lien of any judgment or attachment the
     execution or enforcement of which has been stayed or which has been
     appealed and secured, if necessary, by the filing of an appeal bond;

          (h) any lien on any property held or used by the Company or a
     Restricted Subsidiary in connection with the exploration for, development
     of or production of oil, gas, natural gas (including liquefied gas and
     storage gas), other hydrocarbons, helium, coal, metals, minerals, steam,
     timber, geothermal or other natural resources or synthetic fuels, such
     properties to include, but not be limited to the Company's or a Restricted
     Subsidiary's interest in any mineral fee interests, oil, gas or other
     mineral leases, royalty, overriding royalty or net profits interests,
     production 

                                      -6-

 
     payments and other similar interests, wellhead production equipment, tanks,
     field gathering lines, leasehold or field separation and processing
     facilities, compression facilities and other similar personal property and
     fixtures;

          (i) any lien on oil, gas, natural gas (including liquefied gas and
     storage gas), and other hydrocarbons, helium, coal, metals, minerals,
     steam, timber, geothermal or other natural resources or synthetic fuels
     produced or recovered from any property, an interest in which is owned or
     leased by the Company or a Restricted Subsidiary;

          (j) liens upon any property heretofore or hereafter acquired,
     constructed or improved, created at the time of acquisition or within one
     year thereafter to secure all or a portion of the purchase price thereof or
     the cost of such construction or improvement, or existing thereon at the
     date of acquisition, whether or not assumed by the Company or a Restricted
     Subsidiary, provided that every such lien shall apply only to the property
     so acquired or constructed and fixed improvements thereon;

          (k) any extension, renewal or refunding, in whole or in part, of any
     lien permitted by subparagraph (j) above, if limited to the same property
     or any portion thereof subject to, and securing not more than the amount
     secured by, the lien extended, renewed or refunded;

          (l) liens upon any property heretofore or hereafter acquired by any
     corporation that is or becomes a Restricted Subsidiary after the date
     hereof ("Acquired Entity") provided that every such lien (1) shall either
     (A) exist prior to the time the Acquired Entity becomes a Restricted
     Subsidiary or (B) be created at the time the Acquired Entity becomes a
     Restricted Subsidiary or within one year thereafter to secure all or a
     portion of the acquisition price thereof and (2) shall only apply to those
     properties owned by the Acquired Entity at the time it becomes a Restricted
     Subsidiary or thereafter acquired by it from sources other than the Company
     or any other Restricted Subsidiary;

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

          (n) mechanics' or materialmen's liens, any liens or charges arising by
     reason of pledges or deposits to secure payment of workmen's compensation
     or other insurance, good faith deposits in connection with tenders, leases
     of real estate, bids or contracts (other than contracts for the payment of
     money), deposits to secure duties or public or statutory obligations,
     deposits to secure, or in lieu of, surety, stay or appeal bonds, and
     deposits as security for the payment of taxes or assessments or similar
     charges;

                                      -7-

 
          (o) any lien arising by reason of deposits with, or the giving of any
     form of security to, any governmental agency or any body created or
     approved by law or governmental regulation for any purpose at any time in
     connection with the financing of the acquisition or construction of
     property to be used in the business of the Company or a Restricted
     Subsidiary or as required by law or governmental regulation as a condition
     to the transaction of any business or the exercise of any privilege or
     license, or to enable the Company or a Restricted Subsidiary to maintain
     self-insurance or to participate in any funds established to cover any
     insurance risks or in connection with workmen's compensation, unemployment
     insurance, old age pensions or other social security, or to share in the
     privileges or benefits required for companies participating in such
     arrangements;

          (p) any lien of or upon any office equipment, data processing
     equipment (including, without limitation, computer and computer peripheral
     equipment), or transportation equipment (including, without limitation,
     motor vehicles, tractors, trailers, marine vessels, barges, towboats,
     rolling stock and aircraft);

          (q) any lien created or assumed by the Company or a Restricted
     Subsidiary in connection with the issuance of debt securities the interest
     on which is excludable from gross income of the holder of such security
     pursuant to the Internal Revenue Code, as amended, for the purposes of
     financing, in whole or in part, the acquisition or construction of property
     to be used by the Company or a Restricted Subsidiary; or

          (r) the pledge or assignment of accounts receivable, or the pledge or
     assignment of conditional sales contracts or chattel mortgages and
     evidences of indebtedness secured thereby, received in connection with the
     sale by the Company or such Restricted Subsidiary or others of goods or
     merchandise to customers of the Company or such Restricted Subsidiary.

     In case the Company or any Restricted Subsidiary shall propose to pledge,
mortgage, or hypothecate any Principal Property at any time owned by it to
secure any indebtedness, other than as permitted by subdivision (a) to (r),
inclusive, of this Section 214, the Company shall prior thereto give written
notice thereof to the Trustee, and the Company shall or shall cause such
Restricted Subsidiary to, prior to or simultaneously with such pledge, mortgage
or hypothecation, by supplemental indenture executed to the Trustee (or to the
extent legally necessary to another trustee or additional or separate trustee),
in form satisfactory to the Trustee, effectively secure all the Debentures
equally and ratably with, or prior to, such indebtedness.

     Notwithstanding the foregoing provisions of this Section 214, the Company
or a Restricted Subsidiary may issue, assume or guarantee indebtedness secured
by a mortgage which would otherwise be subject to the foregoing restrictions in
an aggregate amount which, together with all other indebtedness of the Company
or a Restricted Subsidiary secured by a mortgage which (if 

                                      -8-

 
originally issued, assumed or guaranteed at such time) would otherwise be
subject to the foregoing restrictions (not including indebtedness permitted to
be secured under clauses (a) through (r) above) and the Value of all Sale and
Leaseback Transactions in existence at such time (other than any Sale and
Leaseback Transaction which, if such Sale and Leaseback Transaction had been a
lien, would have been permitted by paragraph (j) of this Section 214 and other
than Sale and Leaseback Transactions as to which application of amounts have
been made in accordance with paragraph (l) of this Section 214) does not at the
time of incurrence of such indebtedness exceed 5% of Consolidated Net Tangible
Assets. "Value" means, with respect to a Sale and Leaseback Transaction, as of
any particular time, the amount equal to the greater of (1) the net proceeds
from the sale or transfer of the property leased pursuant to such Sale and
Leaseback Transaction or (2) the fair value, in the opinion of the Board of
Directors, of such property at the time of entering into such Sale and Leaseback
Transaction, in either case divided first by the number of full years of the
term of the lease and then multiplied by the number of full years of such term
remaining at the time of determination, without regard to any renewal or
extension options contained in the lease.

     Section 215.  Restrictions on Sale and Leaseback Transactions.  The Company
shall not, nor shall it permit any Restricted Subsidiary to, enter into any Sale
and Leaseback Transaction unless the net proceeds of such sale are at least
equal to the fair value (as determined by the Board of Directors) of such
Principal Property and either (a) the Company or such Restricted Subsidiary
would be entitled, pursuant to the provisions of (1) paragraph (j) of Section
214 or (2) paragraph (1) of Section 214, to incur indebtedness secured by a lien
on the Principal Property to be leased without equally and ratably securing the
Debentures, or (b) the Company shall, and in any such case the Company covenants
that it will, within 120 days of the effective date of any such arrangement,
apply an amount not less than the fair value (as so determined) of such
Principal Property (i) to the payment or other retirement of Funded Debt
incurred or assumed by the Company which ranks senior to or pari passu with the
Debentures or of Funded Debt incurred or assumed by any Restricted Subsidiary
(other than, in either case, Funded Debt owned by the Company or any Restricted
Subsidiary), or (ii) to the purchase at not more than fair value (as so
determined) of Principal Property (other than the Principal Property involved in
such sale).  For this purpose, "Funded Debt" means any indebtedness which by its
terms matures at or is extendable or renewable at the sole option of the obligor
thereon without requiring the consent of the obligee to a date more than 12
months after the date of the creation of such indebtedness.

     Section 216.  Expiration of Restrictions on Liens and Restrictions on Sale
and Leaseback Transactions.  Notwithstanding anything to the contrary herein, on
the date (the "Termination Date") (and continuing thereafter) on which there
remains outstanding, in the aggregate, no more than $200,000,000 in principal
amount of NorAm Long-Term Indebtedness, the covenants of the Company set forth
in Sections 214 and 215 hereof shall terminate and the Company shall no longer
be subject to the covenants set forth in such Sections.

     Section 217.  No Redemption.  The Debentures shall not be subject to
redemption by the Company prior to their Stated Maturity.

                                      -9-

 
     Section 218.  Sinking Fund Obligations.  The Company has no obligation to
redeem or purchase any Debentures pursuant to any sinking fund or analogous
requirement or upon the happening of a specified event or at the option of a
Holder thereof.


                                   ARTICLE 3

                            Miscellaneous Provisions

     Section 301.  The Indenture, as supplemented and amended by this
Supplemental Indenture No. 1, is in all respects hereby adopted, ratified and
confirmed.

     Section 302.  This Supplemental Indenture No. 1 may be executed 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 303.  THIS SUPPLEMENTAL INDENTURE NO. 1 AND EACH DEBENTURE SHALL BE
DEEMED TO BE A CONTRACT MADE UNDER THE LAWS OF THE STATE OF NEW YORK AND SHALL
BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW
YORK WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES THEREOF.

                                      -10-

 
     IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture No. 1 to be duly executed, as of the day and year first written above.

                              NORAM ENERGY CORP.


                              By:/s/ Marc Kilbride
                                 -------------------------------
                                  Name: Marc Kilbride
                                  Title: Treasurer
Attest:

/s/ Richard Dauphin
- ------------------------------ 
Name : Richard Dauphin
Title: Assistant Secretary



(SEAL)



                              CHASE BANK OF TEXAS, NATIONAL
                              ASSOCIATION, as Trustee


                              By:
                                 -------------------------------
                                 Name:
                                      --------------------------   
                                  Title:
                                        ------------------------
(SEAL)

                                      -11-

 
                                   Exhibit A


                           [FORM OF FACE OF SECURITY]

IF THIS SECURITY IS TO BE A GLOBAL SECURITY - 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 OF A DEPOSITARY. THIS SECURITY IS
EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE
DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE
INDENTURE AND MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A
NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR
ANOTHER NOMINEE OF THE DEPOSITARY.

[For as long as this Global Security is deposited with or on behalf of The
Depository Trust Company it shall bear the following legend.]  Unless this
certificate is presented by an authorized representative of The Depository Trust
Company, a New York corporation ("DTC"), to NorAm Energy Corp. or its agent for
registration of transfer, exchange, or payment, and any certificate issued is
registered in the name of Cede & Co. or in such other name as is requested by an
authorized representative of DTC (and any payment is made to Cede & Co. or to
such other entity as is requested by an authorized representative of DTC), ANY
TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest
herein.


                               NORAM ENERGY CORP.

                     6 1/2% Debentures due February 1, 2008



No. __________                                         $ __________
                                                   CUSIP No.  655419AD1

          NORAM ENERGY CORP., a corporation duly organized and existing under
the laws of the State 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 ____________________ Dollars on February 1, 2008,
and to pay interest thereon from February 10, 1998 or from the most recent
Interest Payment Date to which interest has been paid or duly provided for,
semi-annually on February 1 and August 1 in each year, commencing August 1,
1998, at the rate of 6 1/2% per annum, until the principal hereof is paid or
made available for payment, provided that any principal and 

                                      A-1

 
premium, and any such installment of interest, which is overdue shall bear
interest at the rate of 6 1/2% per annum (to the extent permitted by applicable
law), from the dates such amounts are due until they are paid or made available
for payment, and such interest shall be payable on demand. The amount of
interest payable for any period shall be computed on the basis of twelve 30-day
months and a 360-day year. The amount of interest payable for any partial period
shall be computed on the basis of a 360-day year of twelve 30-day months and the
days elapsed in any partial month. In the event that any date on which interest
is payable on this Security is not a Business Day, then a payment of the
interest payable on such date will be made on the next succeeding day which is a
Business Day (and without any interest or other payment in respect of any such
delay) with the same force and effect as if made on the date the payment was
originally payable. A "Business Day" shall mean, when used with respect to any
Place of Payment, each Monday, Tuesday, Wednesday, Thursday and Friday which is
not a day on which banking institutions in that Place of Payment are authorized
or obligated by law or executive order to close. 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, which shall be the January 15 or
July 15 (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 may 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 whereof 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 any time
in any other lawful manner not inconsistent with the requirements of any
securities exchange or automated quotation system on which the Securities of
this series may be listed or traded, and upon such notice as may be required by
such exchange or automated quotation system, all as more fully provided in said
Indenture.

          Payment of the principal of (and premium, if any) and any such
interest on this Security will be made at the office or agency of Houston
Industries Incorporated, a Texas corporation, maintained for that purpose at the
address Houston Industries Plaza, c/o Office of Investor Services, 1111
Louisiana 44th Floor, Houston, Texas 77002, 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; provided, however, that at the option of the
Company payment of interest may be made (i) by check mailed to the address of
the Person entitled thereto as such address shall appear in the Security
Register or (ii) by wire transfer in immediately available funds at such place
and to such account as may be designated in writing by the Person entitled
thereto as specified 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.

                                      A-2

 
          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.

          IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:  _______________                  NORAM ENERGY CORP.



                                         By:
                                            -------------------------------    
                                         Name:
(SEAL)                                   Title:



Attest:

_____________________


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


                                         CHASE BANK OF TEXAS,
                                         NATIONAL ASSOCIATION, As Trustee

Dated:________________

                                    By:
                                       --------------------------------- 
                                         Authorized Signatory

                                      A-3

 
                         [FORM OF REVERSE OF SECURITY]

          This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under an Indenture, dated as of February 1, 1998 (herein called the
"Indenture", which term shall have the meaning assigned to it in such
instrument), between the Company and Chase Bank of Texas, National Association,
as Trustee (herein called 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, 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.  This Security is
one of the series designated on the face hereof, limited in aggregate principal
amount to $300,000,000; provided, however, that the authorized aggregate
principal amount of the Securities may be increased above such amount by a Board
Resolution to such effect.

          The Securities of this series are not subject to redemption by the
Company prior to their Stated Maturity and will not be entitled to the benefit
of any sinking fund.

          The Indenture contains provisions for satisfaction and discharge of
the entire indebtedness of this Security upon compliance by the Company with
certain conditions set forth in the Indenture.

          The Indenture contains provisions for defeasance at any time of the
entire indebtedness of this Security or certain restrictive covenants and Events
of Default with respect to this Security, in each case upon compliance with
certain conditions set forth in the Indenture.

          If an Event of Default with respect to 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 principal amount of the Securities at
the time Outstanding of each series to be affected.  The Indenture also contains
provisions permitting the Holders of specified percentages in principal amount
of the Securities of each series at the time Outstanding, on behalf of the
Holders of all Securities of such series, to waive compliance by the Company
with certain provisions of the Indenture and certain past defaults under the
Indenture and their 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.

                                      A-4

 
          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
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 any premium 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 and any premium and
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

          As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registrable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in any place where the principal of and any
premium and interest on this Security are payable, 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 the same
aggregate principal amount, will be issued to the designated transferee or
transferees.  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 tax or other 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.

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

                                      A-5

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

          THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF
LAWS PRINCIPLES THEREOF.

                                      A-6