EXHIBIT 4(b)

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                         TEXASNEW MEXICO POWER COMPANY

                                      to

                          CHASE BANK OF TEXAS, N.A.,
                                  as Trustee

                           _________________________

    
                         FIRST SUPPLEMENTAL INDENTURE
                      Dated as of                 , 1999

                         Supplemental to the Indenture
                          dated as of January 1, 1999

                      Establishing a series of Securities
                    designated    % Senior Notes Due         



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     FIRST SUPPLEMENTAL INDENTURE, dated as of                    , 1999 (herein
called the "First Supplemental Indenture"), between Texas-New Mexico Power
Company, a corporation duly organized and existing under the laws of the State
of Texas (hereinafter called the "Company") and Chase Bank of Texas, N.A., as
Trustee under the Original Indenture referred to below (hereinafter called the
"Trustee").     

                                  WITNESSETH:

     WHEREAS, the Company has heretofore executed and delivered to the Trustee
an indenture dated as of January 1, 1999 (hereinafter called the "Original
Indenture"), to provide for the issuance from time to time in one or more series
of its debentures, notes, bonds or other evidences of indebtedness (herein
called the "Securities"), the form and terms of which are to be established as
set forth in Sections 2.1 and 3.1 of the Original Indenture;

     WHEREAS, Section 9.1 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 purposes, (1) securing the Securities in
accordance with Section 3.1 and (2) establishing the form and terms of the
Securities of any series as permitted in Sections 2.1 and 3.1 of the Original
Indenture;
    
     WHEREAS, the Company desires to create a series of the Securities in an
aggregate principal amount of $     ,000,000 to be designated the "     % Senior
Notes Due      " (the "Senior Notes"), and all action on the part of the Company
necessary to authorize the issuance of the Senior Notes under the Original
Indenture and this First Supplemental Indenture has been duly taken;     

     WHEREAS, subject to the provisions hereof, the Company may issue one or
more series of Senior Note Mortgage Bonds (as hereinafter defined) and deliver
such series to the Trustee to hold in trust for the benefit of the respective
Holders from time to time of the Related Series of Securities (as defined
herein) and any payment by the Company of principal of, premium, if any, and
interest on, the Senior Notes will be applied by the Trustee to satisfy the
Company's obligations with respect to the principal of, premium, if any, and
interest on, the Related Series of Senior Note Mortgage Bonds; and, pursuant to
the terms and provisions hereof, the Company may require the Trustee to deliver
to the Company for cancellation any and all Senior Note Mortgage Bonds held by
the Trustee; and

     WHEREAS, all acts and things necessary to make the Senior Notes, when
executed by the Company and completed, authenticated and delivered by the
Trustee as provided in the Original Indenture and this First 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 FIRST SUPPLEMENTAL INDENTURE WITNESSETH:

     That in consideration of the premises and of the acceptance and purchase of
the Senior Notes by the holders thereof and of the acceptance of this trust by
the Trustee, the Company covenants and agrees with the Trustee, for the equal
benefit of holders of the Senior Notes, as follows:


                                  ARTICLE ONE

                                  Definitions

     The use of the terms and expressions herein is in accordance with the
definitions, uses and constructions contained in the Original Indenture, as
amended and supplemented hereby, and the form of Senior Notes attached hereto as
Exhibit A.

 
                                  ARTICLE TWO
    
          Terms and Issuance of the       % Senior Notes Due              
    
     Section 2.1. Issue of Senior Notes. A series of Securities which shall be
designated the "     % Senior Notes Due      " 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, as
amended, and this First Supplemental Indenture (including the form of Senior
Note set forth in Exhibit A). The aggregate principal amount of the Senior Notes
which may be authenticated and delivered under this First Supplemental Indenture
shall not, except as permitted by the provisions of the Original Indenture,
exceed $   ,000,000.     

     Section 2.2. Form of Senior Notes; Incorporation of Terms. The form of the
Senior Notes shall be substantially in the form of Exhibit A attached hereto.

The terms of such Senior Notes are herein incorporated by reference and are part
of this First Supplemental Indenture.

     Section 2.3. Depositary for Global Securities. The Depositary for any
Global Securities of the series of which this Security is a part shall be The
Depository Trust Company in the City of New York.
    
     Section 2.4. Place of Payment. The Place of Payment in respect of the
Senior Notes will be at the principal office or agency of the Company in the
City of New York, State of New York or at the principal office or place of
business of the Trustee or its successor in trust under the Original Indenture,
which, at the date hereof, is located at                              .     
    
     Section 2.5. Related Series of Senior Note Mortgage Bonds. The Related
Series of Senior Note Mortgage Bonds for the Senior Notes shall be the Company's
First Mortgage Bonds, Series      ,      % due      .     

     Section 2.6. Restrictions on Liens. The covenant provided by Section 10.10
of the Original Indenture shall be applicable to the Senior Notes from and after
the Release Date, provided, that no Event of Default has occurred and at such
                  --------                                                   
time is continuing under the Original Indenture.

     Section 2.7. Restrictions on Sale and Leaseback Transactions. The covenant
provided by Section 10.11 of the Original Indenture shall be applicable to the
Senior Notes after the Release Date.


                                 ARTICLE THREE

                        Amendments to Original Indenture

     Section 3.1. Section 1.1 of the Original Indenture is hereby amended by
adding the following definitions:

          "Expert" means any officer of the Company familiar with the terms of
     the First Mortgage Indenture and this Indenture, any law firm, any
     investment banking firm, or any other Person reasonably acceptable to the
     Trustee.

          "First Mortgage Bonds" means all first mortgage bonds issued by the
     Company and outstanding under the First Mortgage Indenture, other than
     Senior Note Mortgage Bonds.
    
          "First Mortgage Indenture" means the Indenture of Mortgage and Deed of
     Trust, dated November 1, 1944, by and between the Community Public 
Service Co. (now known as the Company) and City National Bank and Trust Company 
of Chicago, Chicago, Illinois (whose current successor is U.S. Bank Trust, 
N.A.)      

                                       2

     
     (as of the date hereof, the "First Mortgage Trustee"), as supplemented and
     modified from time to time.     

          "First Mortgage Trustee" means the Person serving as trustee at the
     time under the First Mortgage Indenture.

          "Related Series of Securities", when used in reference to any series
     of Senior Note Mortgage Bonds, means the series of Securities which, in
     connection with its original authentication and issuance pursuant to
     Section 3.3 hereof, such series of Senior Note Mortgage Bonds were
     delivered to the Trustee pursuant to Section 14.1 hereof.

          "Related Series of Senior Note Mortgage Bonds", when used in reference
     to any series of Securities, shall mean the series of Senior Note Mortgage
     Bonds delivered to the Trustee pursuant to Section 14.1 hereof in
     connection with the initial authentication and issuance of such series of
     Securities pursuant to Section 3.3 hereof.

          "Release Date" means a date chosen by the Company which shall be not
     earlier than the later of (i) the date as of which all First Mortgage
     Bonds, other than the Senior Note Mortgage Bonds, have been retired through
     payment, redemption, or otherwise (including those First Mortgage Bonds
     "deemed to be paid" or as to which the entire indebtedness is paid and
     discharged within the meaning used in Article 18 of the First Mortgage
     Indenture) at, before or after the maturity thereof, and (ii) the date as
     of which no Liens on any Property of the Company or any Subsidiary exists
     (whether such Liens secure Indebtedness of the Company or any Subsidiary or
     any other Person), except that this clause (ii) shall not apply to any Lien
     to the extent described in clauses (a) through (k) of Section 10.10 of the
     Original Indenture or in the last paragraph of such Section 10.10.

          "Senior Note Mortgage Bonds" shall mean any bonds issued by the
     Company under the First Mortgage Indenture and delivered to the Trustee
     pursuant to Section 14.1 hereof.

     Section 3.2. Prior to the Release Date, Section 1.5(a) of the Original
Indenture is hereby amended by inserting the words ", the First Mortgage
Trustee" following the words "by any Holder".

     Section 3.3. Prior to the Release Date, Section 3.1 of the Original
Indenture is hereby amended in the following manner:

          1. Section 3.1(l) is amended by the ";" after the word "Securities"
          and adding "and any change in the right of the Trustee or the
          requisite Holders of such Securities to declare the principal amount
          thereof due and payable pursuant to Section 5.2;"

          2. Section 3.1(p) is amended by deleting the word "and" at the end of
          the Section;

          3. The following Section 3.1(q) is added, to follow Section 3.1(p):

          "(q)  if prior to the Release Date, the designation of the series of
     Senior Note Mortgage Bonds being delivered to the Trustee in connection
     with such series of Securities, if any; and"

          4. Former Section 3.1(q) is relettered as Section 3.1(r).

     Section 3.4. Prior to the Release Date, the third paragraph of Section 3.3
of the Original Indenture is hereby amended by (a) adding "(i)" before the words
"a Company Order" on the [third] line of the 

                                       3

 
paragraph, and (b) by adding, after the words "so offered;" on the [tenth] line
of such paragraph, the following words:

     "(ii) an Officers' Certificate stating that (x) the Company is not, and
     upon the authentication by the Trustee of the series of Securities, will
     not be in default under any of the terms or covenants contained in the
     Indenture, (y) all conditions that must be met by the Company to issue
     Securities under the Indenture have been met, and (z) if prior to the
     Release Date, the series of Senior Note Mortgage Bonds being delivered to
     the Trustee meets the requirements of Section 14.10 hereof, (iii) if prior
     to the Release Date, a certificate of an Expert meeting the requirements of
     Section 14.06(a) hereof, and (iv) if prior to the Release Date, a series of
     Senior Note Mortgage Bonds meeting the requirements of Section 14.09
     hereof;"

     Section 3.5. Prior to the Release Date, the fourth paragraph of Section 3.3
of the Original Indenture is hereby amended in the following manner:

          1. Clause (b) of the fourth paragraph is amended by deleting the word
          "and" at the end of the clause.

          2. Clauses (d) and (e) are added after clause (c), as follows:

               "(d) if prior to the Release Date, that the Senior Note Mortgage
          Bonds to be delivered to the Trustee in connection with the issuance
          of such series of Securities have been duly authorized, and that such
          Senior Note Mortgage Bonds, when authenticated and delivered by the
          First Mortgage Trustee and issued by the Company in accordance with
          the terms of the First Mortgage Indenture, will constitute valid and
          legally binding obligations of the Company, enforceable in accordance
          with their terms, except as may be limited by bankruptcy, insolvency,
          reorganization, moratorium, fraudulent conveyance or transfer or other
          similar laws relating to or affecting the rights of creditors
          generally and except as the enforceability thereof is subject to the
          application of general principles of equity (regardless of whether
          considered in a proceeding in equity or at law), including, without
          limitation, (i) the possible unavailability of specific performance,
          injunctive relief or any other equitable remedy and (ii) concepts of
          materiality, reasonableness, good faith and fair dealing, and except
          as enforcement of remedial and procedural provisions thereof may be
          limited by state laws affecting the remedies for the enforcement of
          the security provided for in the First Mortgage Indenture; and that
          such Senior Note Mortgage Bonds will be entitled to the benefit of the
          First Mortgage Indenture, equally and ratably, with all other First
          Mortgage Bonds outstanding thereunder, except as to any sinking fund
          provisions; and

               (e) if prior to the Release Date, that the First Mortgage
          Indenture and any required financing statements have been duly filed
          and recorded in all places where such filing or recording is necessary
          for the perfection or preservation of the lien of the First Mortgage
          Indenture, and the First Mortgage Indenture constitutes a valid and
          perfected first lien upon the property purported to be covered
          thereby, subject only to permissible encumbrances (as defined in the
          First Mortgage Indenture);"

          3. The flush language following clause (e) is amended (1) by adding
          after the words "Opinion of Counsel" the words ", the Officers'
          Certificate, the certificate of an Expert and the Senior note Mortgage
          Bonds"; and (2) by replacing "clauses (b) and (c)" with "clauses (b),
          (c), (d) and (e)".

          4. The word "and" at the end of subclause (i) is deleted, and the
          following subclauses (iii) and (iv) are inserted after subclause (ii):

                                       4

 
                    "(iii) if prior to the Release Date, when the terms of the
               Senior Note Mortgage Bonds have been established in accordance
               with the instrument or instruments creating the series of which
               such Senior Note Mortgage Bonds are a part, that the Senior Note
               Mortgage Bonds to be delivered to the Trustee in connection with
               the issuance of such series of Securities will have been duly
               authorized, and that such Senior Note Mortgage Bonds, when
               authenticated and delivered by the First Mortgage Trustee and
               issued by the Company in accordance with the terms of the First
               Mortgage Indenture, will constitute valid and legally binding
               obligations of the Company, enforceable in accordance with their
               terms, except as may be limited by bankruptcy, insolvency,
               reorganization, moratorium, fraudulent conveyance or transfer or
               other similar laws relating to or affecting the rights of
               creditors generally and except as the enforceability thereof is
               subject to the application of general principles of equity
               (regardless of whether considered in a proceeding in equity or at
               law), including, without limitation, (i) the possible
               unavailability of specific performance, injunctive relief or any
               other equitable remedy and (ii) concepts of materiality,
               reasonableness, good faith and fair dealing, and except as
               enforcement of remedial and procedural provisions thereof may be
               limited by state laws affecting the remedies for the enforcement
               of the security provided for in the First Mortgage Indenture; and
               that such Senior Note Mortgage Bonds will be entitled to the
               benefit of the First Mortgage Indenture, equally and ratably,
               with all other First Mortgage Bonds outstanding thereunder,
               except as to any sinking fund provisions; and

                    (iv) if prior to the Release Date, that when the First
               Mortgage Indenture and any required financing statements have
               been duly filed and recorded in all places where such filing or
               recording is necessary for the perfection or preservation of the
               lien of the First Mortgage Indenture, the First Mortgage
               Indenture will constitute a valid and perfected first lien upon
               the property purported to be covered thereby, subject only to
               Permitted Encumbrances (as defined in the First Mortgage
               Indenture);"

     Section 3.6. Prior to the Release Date, Article 3 of the Original Indenture
is hereby amended by adding, after Section 3.12, the following Section 3.13:

          "Section 3.13. Payment of Securities. The Trustee shall receive the
     Senior Note Mortgage Bonds from the Company as provided in this Indenture
     and shall hold the Senior Note Mortgage Bonds, and any and all sums payable
     thereon or with respect thereto or realized therefrom, in trust for the
     benefit of the Holders of the Securities, as herein provided. Subject to
     Article Five hereof, all payments made by the Company to the Trustee on a
     series of Senior Note Mortgage Bonds, if any, shall be applied by the
     Trustee to pay, when due, principal of, premium, if any, and interest on
     the Related Series of Securities and, to the extent so applied, shall
     satisfy the Company's obligations on such Securities. Notwithstanding the
     foregoing, the Company's obligation to make payments of principal of,
     premium, if any, and interest on any series of Senior Note Mortgage Bonds
     shall be fully satisfied by making timely payments of principal of,
     premium, if any, and interest on the Related Series of Securities."

     Section 3.7. Prior to the Release Date, Article 4 of the Original Indenture
is hereby amended by adding, after Section 4.2, the following Section 4.3:

          "Section 4.3. Release of Related Series of Senior Note Mortgage Bonds.

          (a)  If the obligations of the Company to make payment with respect to
     any series of Securities are satisfied and discharged, in whole or in part,
     pursuant to this Article Four, the Related Series of Senior Note Mortgage
     Bonds shall be deemed to be paid and discharged in a principal amount equal
     to the principal amount of the Related Series of Securities paid and
     discharged pursuant hereto.

                                       5

 
          (b)  If the Company shall have paid or caused to be paid the principal
     of and premium, if any, and interest on any Security (or portion thereof),
     as and when the same shall have become due and payable or the Company shall
     have delivered to the Trustee for cancellation any Outstanding Security (or
     portion thereof), such Security (or portion thereof) shall cease to be
     entitled to any lien, benefit or security under this Indenture. Upon a
     Security of any series (or portion thereof) ceasing to be entitled to any
     lien, benefit or security under this Indenture, the obligation of the
     Company to make payment with respect to principal of and premium, if any,
     and interest on a principal amount of the Related Series of Senior Note
     Mortgage Bonds equal to the principal amount of such Security (or portion
     thereof) shall be satisfied and discharged and such Senior Note Mortgage
     Bonds (or portion thereof) shall cease to secure the Securities in any
     manner, and the Trustee shall release and deliver to the Company such
     Senior Note Mortgage Bonds (or portion thereof).

          (c)  Upon the satisfaction and discharge of this Indenture, the
     Trustee shall at the request of the Company return to the Company all
     Senior Note Mortgage Bonds and all other property and money held by it
     under this Indenture and determined by it to be in excess of the amount
     required to be held under Section 4.1 hereof."

     Section 3.8. Prior to the Release Date, Sections 5.1 of the Original
Indenture is hereby amended by replacing the "." at the end of clause (h) with
"; or" and by adding, after such clause (h), the following clauses (i) and (j):

               "(i) a "default" as defined in the First Mortgage Indenture has
          occurred and is continuing, and the First Mortgage Trustee, the
          Company or Holders of at least 33% in aggregate principal amount of
          the Securities at the time outstanding shall have given written notice
          thereof to the Trustee; or

               (j) any Event of Default under any series of Securities issued
          pursuant to this Indenture or any event of default, as defined in any
          other indenture, mortgage or instrument under which there may be
          issued, or by which there may be secured or evidenced, any
          Indebtedness of the Company (whether such Indebtedness now exists or
          shall hereafter be created or incurred) shall occur and shall consist
          of default in the payment of such Indebtedness at the maturity thereof
          (after giving effect to any applicable grace period) or shall result
          in Indebtedness becoming or being declared due and payable prior to
          the date on which it would otherwise become due and payable, and such
          default in payment is not cured or such acceleration shall not be
          rescinded or annulled within 10 days after written notice to the
          Company from the Trustee or to the Company and to the Trustee from the
          Holders of at least 10% in aggregate principal amount of the
          Securities of that series at the time Outstanding; provided that if,
          prior to the declaration of acceleration of the maturity of the
          Securities of that series or the entry of judgment in favor of the
          Trustee in a suit pursuant to Section 5.3, such default shall be
          remedied or cured by the Company or waived by the holders of such
          Indebtedness, then the Event of Default hereunder by reason thereof
          shall be deemed likewise to have been thereupon remedied, cured or
          waived without further action on the part of either the Trustee or any
          of the Holders of the Securities of that series, and provided further,
          that, subject to Section 6.1 and 6.2, the Trustee shall not be charged
          with knowledge of any such default unless written notice of such
          default shall have been given to the Trustee by the Company, by a
          holder or an agent of a holder of any such Indebtedness, by the
          trustee then acting under any indenture or other instrument under
          which such default shall have occurred, or by the Holders of at least
          five percent in aggregate principal amount of the Securities of that
          series at the time Outstanding."

     Section 3.9. Prior to the Release Date, Section 5.2 of the Original
Indenture is hereby amended as follows:

     1. A new paragraph is added, to follow the first paragraph of Section 5.2,
as follows:

                                       6

 
          "Upon the Securities being declared to be or becoming due and payable,
     the Trustee can immediately file with the First Mortgage Trustee a written
     demand for redemption of all Senior Note Mortgage Bonds pursuant to the
     applicable provisions of the supplemental indenture to the First Mortgage
     Indenture."

     2. The paragraph following the new second paragraph of Section 5.2 is
     amended (i) by adding after the word "provided," the words "and prior to
     the mailing to the Trustee by the First Mortgage Trustee of a firm, valid
     and unconditional notice to the Trustee of the acceleration of all of the
     First Mortgage Bonds issued and outstanding under the First Mortgage
     Indenture," and (ii) by adding after the word "consequences" the words
     "(including if given the written demand for redemption of all Senior Note
     Mortgage Bonds)".

     3. Clause (b) of Section 5.2 is amended by deleting the "." at the end of
     such clause (b) and replacing it with "(including any defaults under the
     First Mortgage Indenture, as evidenced by notice thereof from the First
     Mortgage Trustee to the Trustee).".

     Section 3.10. Prior to the Release Date, Section 5.3 of the Original
Indenture is hereby amended in the following manner:

     1. By adding after the word "unpaid" in the second paragraph of Section 5.3
     the following words: "(including, prior to the Release Date, to exercise
     any rights to that end it may have as holder of the Senior Note Mortgage
     Bonds)".

     2. By adding after the first occurrence of the word "rights" in the third
     paragraph of Section 5.3 the following words: "(including, prior to the
     Release Date, its rights as holder of the Senior Note Mortgage Bonds)".

     Section 3.11. Prior to the Release Date, subclause (a) of the first
paragraph of Section 5.4 of the Original Indenture is hereby amended by adding,
after the word "(including" the words ", prior to the Release Date, any claims
of the Trustee as holder of Senior Note Mortgage Bonds and including".

     Section 3.12. Prior to the Release Date, Section 5.5 of the Original
Indenture is hereby amended by adding, after the words "Securities of any
series" on the second line of such Section 5.5, the words "(including, prior to
the Release Date, its rights as holder of the Senior Note Mortgage Bonds),".

     Section 3.13. Prior to the Release Date, Section 7.3 of the Original
Indenture is hereby amended as follows:

     1. The word "and" at the end of Section 7.3(a)(6) is deleted.

     2. The "." at the end of Section 7.3(a)(7) is replaced with "; and".

     3. The following Section 7.3(a)(8) is added after Section 7.3(a)(7):

               "(8) any release, or release and substitution, of property
          subject to the lien of this Indenture (and the consideration therefor,
          if any) which it has not previously reported."

     4. Section 7.3(b) is amended by adding, before the words "the character" on
     the [third] line of such Section 7.3, the words "(1) the release, or
     release and substitution, of property subject to the lien of this Indenture
     (and the consideration therefor, if any) unless the fair value of such
     property, as set forth in the certificate required by Section 14.6 hereof,
     is less than 10% of the principal amount of Securities outstanding at the
     time of such release, or release and substitution, and".

                                       7

 
     Section 3.14. Prior to the Release Date, Section 8.1(a) of the Original
Indenture is hereby amended in the following manner:

     1. The letter "(i)" is added after the word "assume,".

     2. The ";" at the end of Section 8.1(a) is replaced by "," followed by the
     words: "and (ii) if such consolidation, merger, conveyance, sale or other
     transfer occurs prior to the Release Date, by an indenture supplemental to
     the First Mortgage Indenture, executed and delivered to the Trustee and the
     First Mortgage Trustee, in form satisfactory to the Trustee and the First
     Mortgage Trustee, the due and punctual payment of the principal of (and
     premium, if any) and interest on all of the Senior Note Mortgage Bonds and
     the performance of every covenant of the First Mortgage Indenture on the
     part of the Company to be performed or observed;".

     Section 3.15. Section 9.1(j) of Article 9 of the Indenture is hereby
amended by deleting the "." after the words "fully registered form" and
inserting in its place the word "; and" and by adding the following new
paragraph (k) after paragraph (j):

          "(k)  after the Release Date, to amend this Indenture to eliminate any
     provisions related to the Senior Note Mortgage Bonds which are no longer
     applicable."

     Section 3.16. Prior to the Release Date, Section 9.2(l) of the Original
Indenture is hereby amended by replacing the ";" at the end of such Section with
"," followed by the words: "or impair the interest hereunder of the Trustee in
the Senior Note Mortgage Bonds, or prior to the Release Date, reduce the
principal amount of any series of Senior Note Mortgage Bonds to an amount less
than the principal amount of the Related Series of Securities or alter the
payment provisions of such Senior Note Mortgage Bonds in a manner adverse to the
Holders of the Securities;".

     Section 3.17. Prior to the Release Date, Article 10 of the Original
Indenture is hereby amended by adding, after Section 10.13, the following
Section 10.14:

          "Section 10.14. Opinions of Counsel. The Company shall deliver to the
     Trustee:

          (a) promptly after the execution and delivery of this Indenture and of
     any indenture supplemental to this Indenture but prior to the Release Date,
     an Opinion of Counsel either stating that, in the opinion of such counsel,
     this Indenture or such supplemental indenture and any financing or
     continuation statements have been properly recorded and filed so as to make
     effective and to perfect the security interest of the Trustee intended to
     be created by this Indenture for the benefit of the Holders from time to
     time of the Securities in the Senior Note Mortgage Bonds, and reciting the
     details of such action, or stating that, in the opinion of such counsel, no
     such action is necessary to perfect or make such security interest
     effective and stating what, if any, action of the foregoing character may
     reasonably be expected to become necessary prior to the next succeeding
     March 1 to maintain, perfect and make such security interest effective; and

          (b) on or before March 1 of each year, beginning in 1999, and prior to
     the Release Date, an Opinion of Counsel either stating that in the opinion
     of such counsel such action has been taken, since the date of the most
     recent Opinion of Counsel furnished pursuant to this Section 10.12(b) or
     the first Opinion of Counsel furnished pursuant to Section 10.12(a) hereof,
     with respect to the recording, filing, rerecording, or refiling of this
     Indenture, each supplemental indenture and any financing or continuation
     statements, as is necessary to maintain and perfect the security interest
     of the Trustee intended to be created by this Indenture for the benefit of
     the Holders from time to time of the Securities in the Senior Note Mortgage
     Bonds, and reciting the details of such action, or stating that in the
     opinion of such counsel no such action is necessary to maintain and perfect
     such security interest and stating what, if any, action of the foregoing

                                       8

 
     character may reasonably be expected to become necessary prior to the next
     succeeding March 1 to maintain, perfect and make such security interest
     effective."

     Section 3.18. Prior to the Release Date, Section 13.2 of the Original
Indenture is hereby amended by replacing the "." after the word "Defeasance")"
in the first sentence of such Section with the following words: "and the
obligation of the Company to make payment with respect to the principal of and
premium, if any, and interest on the Senior Note First Mortgage Bonds shall be
satisfied and discharged, as provided in the supplemental indenture or
indentures to the First Mortgage creating such Senior Note First Mortgage Bonds
and the Senior Note First Mortgage Bonds shall cease to secure the related
Securities in any manner.".

     Section 3.19. The Original Indenture is hereby amended by adding, after
Section 13.6, the following Article 14:


                                  ARTICLE 14

                          Senior Note Mortgage Bonds

          Section 14.1. Delivery of Senior Note Mortgage Bonds to the Trustee.

          Subject to the provisions of Section 4.1 and Section 14.10 hereof, the
     Company (a) shall, from time to time prior to the Release Date, deliver to
     the Trustee, upon the issuance of a series of Securities hereunder, Senior
     Note Mortgage Bonds conforming to the requirements of Section 14.9 hereof,
     fully registered in the name of the Trustee, in trust for the benefit of
     the Holders from time to time of the Securities issued under this Indenture
     as security for any and all obligations of the Company under the
     Securities, including, but not limited to, (1) the full and prompt payment
     of the principal of the Securities when and as the same shall become due
     and payable in accordance with the terms and provisions of this Indenture
     or the Securities, either at the stated maturity thereof, upon acceleration
     of the maturity thereof or upon redemption, and (2) the full and prompt
     payment of any interest on the Securities when and as the same shall become
     due and payable in accordance with the terms and provisions of this
     Indenture or the Securities and (b) shall deliver concurrently therewith to
     the Trustee the certificate of the Expert required by Section 14.6 hereof.

          Section 14.2. Receipt.

          The Trustee shall accept and acknowledge receipt of the Senior Note
     Mortgage Bonds and Expert certificate described in Section 14.1 hereof upon
     the delivery thereof in accordance with said Section 14.1.

          Section 14.3. Senior Note Mortgage Bonds Held by the Trustee.

          The Trustee, as holder of the Senior Note Mortgage Bonds, shall attend
     any meeting of bondholders under the First Mortgage Indenture as to which
     it receives due notice, or, at its option, shall deliver its proxy in
     connection therewith. Either at such meeting, or otherwise where consent of
     holders of first mortgage bonds issued under the First Mortgage Indenture
     is sought without a meeting, the Trustee shall vote all of the Senior Note
     Mortgage Bonds held by it, or shall consent or withhold its consent with
     respect thereto, as directed by the Holders of not less than a majority in
     the aggregate principal amount of the outstanding Securities; provided,
     however, the Trustee shall not vote as such holder of any particular series
     of Senior Note Mortgage Bonds in favor of, or give its consent to, any
     action which, in the Trustee's opinion, would materially adversely affect
     such series of Senior Note Mortgage Bonds in a manner not shared generally
     by all other Senior Note Mortgage Bonds, except upon notification by the
     Trustee to the Holders of the Related Series of Securities of such proposal
     and consent thereto of 

                                       9

 
     the Holders of not less than a majority in aggregate principal amount of
     the outstanding Securities of such series.

          Section 14.4. No Transfer of Senior Note Mortgage Bonds; Exception.

          Except as required to effect an assignment to a successor trustee
     under this Indenture or pursuant to Section 14.5 or Section 14.8 hereof,
     the Trustee shall not sell, assign or transfer the Senior Note Mortgage
     Bonds and the Company shall issue stop transfer instructions to the First
     Mortgage Trustee and any transfer agent under the First Mortgage Indenture
     to effect compliance with this Section 14.4.

          Section 14.5. Delivery to the Company of All Senior Note Mortgage
     Bonds.

          When the obligation of the Company to make payment with respect to the
     principal of and premium, if any, and interest on the Senior Note Mortgage
     Bonds shall be satisfied or deemed satisfied pursuant to Section 4.1 or
     Section 14.10 hereof, the Trustee shall, upon written request of the
     Company and receipt of the certificate of the Expert described in Section
     14.6(b) hereof (if such certificate is then required by Section 14.6(b)
     hereof), deliver to the Company without charge therefor all of the Senior
     Note Mortgage Bonds, together with such appropriate instruments of transfer
     or release as may be reasonably requested by the Company. All Senior Note
     Mortgage Bonds delivered to the Company in accordance with this Section
     14.5 shall be delivered by the Company to the First Mortgage Trustee for
     cancellation.

          Section 14.6. Fair Value Certificate.

          (a) Upon the delivery by the Company to the Trustee of Senior Note
     Mortgage Bonds pursuant to Section 14.1 hereof and subject to Section 3.3
     hereof, the Company shall simultaneously therewith deliver to the Trustee a
     certificate of an Expert (1) stating that it is familiar with the
     provisions of such Senior Note Mortgage Bonds and of this Indenture, (2)
     stating the principal amount of such Senior Note Mortgage Bonds so
     delivered, the stated interest rate (or method of calculation of interest)
     of such Senior Note Mortgage Bonds and the stated maturity date of such
     Senior Note Mortgage Bonds, (3) identifying the Securities being issued
     contemporaneously therewith, and (4) stating the fair value to the Company
     of such Senior Note Mortgage Bonds. If the fair value to the Company of the
     Senior Note Mortgage Bonds so delivered, as described in the certificate to
     be delivered pursuant to this Section 14.6(a), both (l) is equal to or
     exceeds (A) $25,000 and (B) 1% of the principal amount of the Securities
     outstanding at the date of delivery of such Senior Note Mortgage Bonds and
     (2) together with the fair value to the Company, as described in the
     certificates to be delivered pursuant to this Section 14.6(a), of all other
     Senior Note Mortgage Bonds delivered to the Trustee since the commencement
     of the then current calendar year, is equal to or exceeds 10% of the
     principal amount of the Securities outstanding at the date of delivery of
     such Senior Note Mortgage Bonds, then the certificate required by this
     Section 14.6(a) shall (1) be delivered by an Expert who shall be
     independent of the Company and satisfactory to the Trustee in its
     reasonable judgment and (2) shall, in addition to the certifications
     described above, state the fair value to the Company of all Senior Note
     Mortgage Bonds delivered to the Trustee pursuant to Section 14.1 hereof
     since the commencement of the then current year as to which a certificate
     was not delivered by an Expert independent of the Company.

          (b) If Senior Note Mortgage Bonds are delivered or surrendered to the
     Company pursuant to Section 14.5 or 14.8 hereof, the Company shall
     simultaneously therewith deliver to the Trustee a certificate of an Expert
     (1) stating that it is familiar with the provisions of such Senior Note
     Mortgage Bonds and of this Indenture, (2) stating the principal amount of
     such Senior Note Mortgage Bonds so delivered, the stated interest rate (or
     method of calculation of interest) of such Senior Note Mortgage Bonds and
     the stated maturity date of such Senior Note Mortgage Bonds, (3) if
     applicable, identifying the Securities, the payment of the interest on and
     principal of which has been discharged hereunder, and (4) stating that such
     delivery and release 

                                       10

 
     will not impair the lien of this Indenture in contravention of the
     provisions of this Indenture. If, prior to the Release Date, the fair value
     of the Senior Note Mortgage Bonds so delivered and released, as described
     in the certificate to be delivered pursuant to this Section 14.6(b), both
     (l) is equal to or exceeds (A) $25,000 and (B) 1% of the principal amount
     of the outstanding Securities at the date of release of such Senior Note
     Mortgage Bonds and (2) together with the fair value, as described in the
     certificates to be delivered pursuant to this Section 14.6(b), of all other
     Senior Note Mortgage Bonds released from the lien of this Indenture since
     the commencement of the then current calendar year, is equal to or exceeds
     10% of the principal amount of the Securities outstanding at the date of
     release of such Senior Note Mortgage Bonds, then the certificate required
     by this Section 14.6(b) shall be delivered by an Expert who shall be
     independent of the Company and satisfactory to the Trustee in its
     reasonable judgment.

          If, in connection with a delivery or release of outstanding Senior
     Note Mortgage Bonds, the Company provides to the Trustee an Opinion of
     Counsel stating that the certificate described by this Section 14.6 is not
     required by law, such certificate shall not be required to be delivered
     hereunder in connection with such delivery or release.

          Section 14.7. Further Assurances.

          The Company shall cause this Indenture, any indentures supplemental to
     this Indenture, and any financing or continuation statements to be promptly
     recorded and filed and rerecorded and refiled in such a manner and in such
     places, as may be required by law in order fully to preserve, protect and
     perfect the security of the Holders and all rights of the Trustee, and, at
     its own expense, shall do such further lawful acts and things, and execute
     and deliver such additional conveyances, assignments, assurances,
     agreements, financing statements and instruments, as may be necessary in
     order to better assign, assure, perfect and confirm to the Trustee its
     security interest in the Senior Note Mortgage Bonds and for maintaining,
     protecting and preserving such security interest.

          Section 14.8. Exchange and Surrender of Senior Note Mortgage Bonds.

          At any time at the written direction of the Company, the Trustee shall
     surrender to the Company all or part of the Senior Note Mortgage Bonds in
     exchange for Senior Note Mortgage Bonds equal in aggregate outstanding
     principal amounts to, in different denominations than but of the same
     series and with all other terms identical to, the Senior Note Mortgage
     Bonds so surrendered to the Company. In addition, at any time a Security
     shall cease to be entitled to any lien, benefit or security under this
     Indenture pursuant to Section 4.4 hereof, the Trustee shall surrender
     Senior Note Mortgage Bonds as provided in this Section to the Company for
     cancellation. The Trustee shall, together with such Senior Note Mortgage
     Bonds, deliver to the Company such appropriate instruments of transfer or
     release as the Company may reasonably request. Prior to the surrender
     required by this paragraph, the Trustee shall receive from the Company the
     following, and (subject to Section 6.1 hereof) shall be fully protected in
     relying upon, (a) an Officers' Certificate stating (i) the aggregate
     outstanding principal amount of the Senior Note Mortgage Bonds of the
     series surrendered by the Trustee, after giving effect to such surrender,
     (ii) the aggregate outstanding principal amount of the Related Series of
     Securities, (iii) that the surrender of the Senior Note Mortgage Bonds will
     not result in any default under this Indenture, and (iv) that any Senior
     Note Mortgage Bonds to be received in exchange for the Senior Note Mortgage
     Bonds being surrendered comply with the provisions of this Section 14.8.

          The Company shall not be permitted to cause the surrender or exchange
     of all or any part of a series of Senior Note Mortgage Bonds contemplated
     in this Section 14.8, if, after such surrender or exchange, the aggregate
     outstanding principal amount of the Related Series of Securities would
     exceed the aggregate outstanding principal amount of such series of Senior
     Note Mortgage Bonds held by the Trustee. Any Senior Note Mortgage Bonds
     received by the Company pursuant to this Section 14.8 shall be delivered to
     the First Mortgage Trustee for cancellation.

                                       11

 
          Section 14.9. Terms of Senior Note Mortgage Bonds.

          Each series of Senior Note Mortgage Bonds delivered to the Trustee
     pursuant to Section 14.1 hereof shall have the same stated rate or rates of
     interest (or interest calculated in the same manner), Interest Payment
     Dates, Stated Maturity, and redemption provisions, and shall be in the same
     aggregate principal amount, as the Related Series of Securities being
     issued.

          Section 14.10. Senior Note Mortgage Bonds as Security for Securities.

          Until the Release Date and subject to Article Four hereof, Senior Note
     Mortgage Bonds delivered to the Trustee, for the benefit of the Holders of
     the Securities, shall serve as security for any and all obligations of the
     Company under the Securities, including, but not limited to (1) the full
     and prompt payment of the principal of such Securities when and as the same
     shall become due and payable in accordance with the terms and provisions of
     this Indenture or the Securities, either at the Stated Maturity thereof,
     upon acceleration of the maturity thereof or upon redemption, and (2) the
     full and prompt payment of any interest on such Securities when and as the
     same shall become due and payable in accordance with the terms and
     provisions of this Indenture or the Securities.

          Notwithstanding anything in this Indenture to the contrary, from and
     after the Release Date, the obligation of the Company to make payment with
     respect to the principal of and premium, if any, and interest on the Senior
     Note Mortgage Bonds shall be deemed satisfied and discharged as provided in
     the supplemental indenture or indentures to the First Mortgage Indenture
     creating such Senior Note Mortgage Bonds and the Senior Note Mortgage Bonds
     shall cease to secure in any manner Securities theretofore or subsequently
     issued. From and after the Release Date, all Senior Notes, whether
     theretofore or subsequently issued, shall be unsecured, and any conditions
     to the issuance of Securities that refer or relate to Senior Note Mortgage
     Bonds or the First Mortgage Indenture shall be inapplicable. From and after
     the Release Date, the Company shall cause the First Mortgage Indenture to
     be closed and the Company shall not issue any additional First Mortgage
     Bonds or Senior Note Mortgage Bonds under the First Mortgage Indenture.
     Notice of the occurrence of the Release Date shall be given by the Trustee
     to the Holders of the Securities in the manner provided in Section 1.6
     hereof not later than 30 days after the Company notifies the Trustee of the
     occurrence of the Release Date."


                                 ARTICLE FOUR

                                 Miscellaneous

     Section 4.1. Execution as Supplemental Indenture. This First Supplemental
Indenture is executed and shall be construed as an indenture supplemental to the
Original Indenture and, as provided in the Original Indenture, this First
Supplemental Indenture forms a part thereof.

     Section 4.2. Conflict with Trust Indenture Act. If any provision hereof
limits, qualifies or conflicts with another provision hereof, or with a
provision of the Original Indenture, which is required to be included in this
First Supplemental Indenture, or in the Original Indenture, respectively, by any
of the provisions of the Trust Indenture Act, such required provision shall
control.

     Section 4.3. Effect of Headings. The Article and Section headings herein
are for convenience only and shall not affect the construction hereof.

     Section 4.4. Successors and Assigns. All covenants and agreements by the
Company in this First Supplemental Indenture shall bind its successors and
assigns, whether so expressed or not.

                                       12

 
     Section 4.5. Separability Clause. In case any provision in this First
Supplemental Indenture or in the Senior Notes shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining
provisions shall not in any way be affected or impaired thereby.

     Section 4.6. Benefits of First Supplemental Indenture. Nothing in this
First Supplemental Indenture or in the Senior Notes, express or implied, shall
give to any person, other than the parties hereto and their successors hereunder
and the Holders, any benefit or any legal or equitable right, remedy or claim
under this First Supplemental Indenture.

     Section 4.7. Execution and Counterparts. This First Supplemental Indenture
may be executed in any number of counterparts, each of which shall be deemed to
be an original, but all such counterparts shall together constitute but one and
the same instrument.

                                       13

 
     IN WITNESS WHEREOF, the parties hereto have caused this First Supplemental
Indenture to be duly executed and their respective corporate seals to be
hereunto affixed and attested, all as of the day and year first above written.

[CORPORATE SEAL]

                                        TEXAS-NEW MEXICO POWER COMPANY

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


                                        Attest:

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



[SEAL]                                  CHASE BANK OF TEXAS, N.A.,
                                        As Trustee

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


                                        Attest:

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

                                       14

 
STATE OF NEW YORK)
                     :ss
COUNTY OF NEW YORK)

    
          On this     day of                  , 1999, before me personally
came                 , to me known, who, being by me duly sworn, did depose and
say that he is a                of Texas-New Mexico Power Company, one of the
corporations described in and which executed the foregoing instrument; that he
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.     

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


STATE OF NEW YORK)
                     :ss
COUNTY OF NEW YORK)

    
          On this     day of                  , 1999 before me personally came
                , to me known, who, being by me duly sworn, did depose and say
that he is a                of                         , one of the
corporations described in and which executed the foregoing instrument; that he
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.     

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

                                       15

 
                                                                       EXHIBIT A

          [If the Security is to be a Global Security, insert -- Unless this
certificate is presented by an authorized representative of The Depository Trust
Company, a New York corporation ("DTC"), to the issuer 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 since the registered owner hereof, Cede & Co., has an interest
herein.

THIS SECURITY IS A GLOBAL SECURITY AS REFERRED TO IN THE INDENTURE HEREINAFTER
REFERENCED AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE OF A
DEPOSITARY. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR THE
INDIVIDUAL SECURITIES REPRESENTED HEREBY, THIS GLOBAL SECURITY 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 OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR
A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.]


                        TEXAS-NEW MEXICO POWER COMPANY
    
                            % SENIOR NOTES DUE    

                                                              $                 
 
No.                                                      CUSIP                  
     
    
          TEXAS-NEW MEXICO POWER COMPANY, a corporation duly organized and
existing under the laws of the State of Texas (herein called the "Company,"
which term includes any successor under the Indenture hereinafter referred to),
for value received, hereby promises to pay to                      or registered
assigns, the principal sum of $                 on              , and to pay
interest thereon from         , or from the most recent Interest Payment Date to
which interest has been paid or duly provided for, semi-annually on             
and             in each year, commencing         , at the rate per annum
provided in the title hereof, until the principal hereof is paid or made
available for payment [if applicable, insert -- , and, subject to the terms of
the Indenture, at the rate of       % per annum on any overdue principal and
premium and (to the extent that the payment of such interest shall be legally
enforceable) on any overdue installment of interest, 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 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         or          (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 will
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 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 said Indenture.     
    
          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         , in such coin or currency of the United States of America as
at the time of payment is legal tender for the payment of public and private
debts; [if this Security is not a Global Security, insert -- provided, however,
that at the option of the Company      

 
payment of interest may be made by check mailed to the address of the Person
entitled thereto as such address 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 manually
executed by or on behalf of the Trustee under the Indenture, this Security shall
not be entitled to any benefits under the Indenture, or be valid or obligatory
for any purpose.

          IN WITNESS WHEREOF, TEXAS-NEW MEXICO POWER COMPANY has caused this
Security to be duly executed.

Dated:                        TEXAS-NEW MEXICO POWER COMPANY

                              BY  
                                  ----------------------------------
                                  Name:
                                  Title:

                                      A-2

 
                    TRUSTEE'S CERTIFICATE OF AUTHENTICATION

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

Date:                         
                              --------------------,
                                    as Trustee,

                              by

                              
                              -------------------------
                              Authorized Signatory

                                      A-3

 
                               [REVERSE OF NOTE]
    
          This Security is one of the duly authorized issue of debentures,
notes, bonds or other evidences of indebtedness of the Company (hereinafter
called the "Securities"), of the series hereinafter specified, all issued or to
be issued under and pursuant to the Indenture dated as of January 1,
supplemented by the First Supplemental Indenture, dated as of              ,
1999 (as so supplemented, the "Indenture"), duly executed and delivered by the
Company and                      , as Trustee (herein called the "Trustee",
which term includes any successor trustee under the Indenture), to which
Indenture and any other indentures supplemental thereto reference is hereby made
for a statement of the respective rights, obligations, duties and immunities
thereunder of the Trustee and any agent of the Trustee, any Paying Agent, the
Company and the Holders of the Securities and of the terms upon which the
Securities are issued and are to be authenticated and delivered. This Security
is one of the series designated on the face hereof, which series is limited in
aggregate principal amount to $        . By the terms of the Indenture,
additional Securities of other separate series, which may vary as to date,
aggregate principal amount, Stated Maturity, interest rate or method of
calculating the interest rate, redemption provisions and in other respects as
therein provided, may be issued in an unlimited amount.     
    
          Prior to the Release Date (as hereinafter defined), the Securities of
this series will be secured by first mortgage bonds (the "Senior Note Mortgage
Bonds") delivered by the Company to the Trustee for the benefit of the Holders
of the Securities, issued under the Indenture of Mortgage and Deed of Trust,
dated November 1, 1944, by and between the Company and U.S. Bank Trust, National
Association (which is successor trustee to First Trust of Illinois, National
Association, which is successor trustee to Bank of America, Illinois, a banking
corporation organized under the laws of Illinois, which was formerly known, at
various times, as Continental Bank, a banking corporation organized under the
laws of Illinois, Continental Bank, National Association, and Continental
Illinois National Bank and Trust Company of Chicago (the "First Mortgage
Trustee"), as supplemented and modified (the "First Mortgage Indenture")
pursuant to the                  Supplemental Indenture dated               ,
1999. Reference is made to the First Mortgage Indenture and the Indenture for a
description of property mortgaged and pledged, the nature and extent of the
security, the rights of the holders of the first mortgage bonds under the First
Mortgage Indenture and of the First Mortgage Trustee in respect thereof, the
duties and immunities of the First Mortgage Trustee and the terms and conditions
upon which the Senior Note Mortgage Bonds are secured and the circumstances
under which additional first mortgage bonds may be issued.     

          FROM AND AFTER THE DATE CHOSEN BY THE COMPANY WHICH IS NOT EARLIER
THAN THE LATER OF (I) SUCH TIME AS ALL FIRST MORTGAGE BONDS (OTHER THAN SENIOR
NOTE MORTGAGE BONDS) ISSUED UNDER THE FIRST MORTGAGE INDENTURE HAVE BEEN RETIRED
THROUGH PAYMENT, REDEMPTION OR OTHERWISE (INCLUDING THOSE FIRST MORTGAGE BONDS
"DEEMED TO BE PAID" OR AS TO WHICH THE ENTIRE INDEBTEDNESS IS PAID AND
DISCHARGED WITHIN THE MEANING USED IN ARTICLE 18 OF THE FIRST MORTGAGE
INDENTURE) AT, BEFORE OR AFTER THE MATURITY THEREOF AND (II) THE DATE AS OF
WHICH NO LIENS ON ANY PROPERTY OF THE COMPANY OR ANY SUBSIDIARY EXISTS (WHETHER
SUCH LIENS SECURE INDEBTEDNESS OF THE COMPANY OR ANY SUBSIDIARY OR ANY OTHER
PERSON), EXCEPT THAT THIS CLAUSE (II) SHALL NOT APPLY TO ANY LIEN TO THE EXTENT
DESCRIBED IN CLAUSES (A) THROUGH (K) OF SECTION 10.10 OF THE ORIGINAL INDENTURE
OR I THE LAST PARAGRAPH OF SUCH SECTION 10.10 (THE "RELEASE DATE"), THE SENIOR
NOTE MORTGAGE BONDS SHALL, AT THE OPTION OF THE COMPANY, CEASE TO SECURE THE
SECURITIES OF THIS SERIES IN ANY MANNER; PROVIDED THAT NO DEFAULT OR EVENT OF
DEFAULT HAS OCCURRED AND AT SUCH TIME IS CONTINUING UNDER THE INDENTURE. IN
CERTAIN CIRCUMSTANCES PRIOR TO THE RELEASE DATE AS PROVIDED IN THE INDENTURE,
THE COMPANY IS PERMITTED TO REDUCE THE AGGREGATE PRINCIPAL AMOUNT OF A SERIES OF
SENIOR NOTE MORTGAGE BONDS HELD BY THE TRUSTEE, BUT IN NO EVENT PRIOR TO THE
RELEASE DATE TO AN AMOUNT LESS THAN THE AGGREGATE OUTSTANDING PRINCIPAL AMOUNT
OF THE SERIES OF SECURITIES INITIALLY ISSUED CONTEMPORANEOUSLY WITH SUCH SENIOR
NOTE MORTGAGE BONDS.

                                      A-4

 
          These Securities will be redeemable, in whole or in part, at the
option of the Company, upon not less than 30 or more than 60 days' notice by
mail to the Holders of such Securities at their addresses in the Security
Register for such series, on any date (a "Redemption Date") at a redemption
price equal to the greater of (a) 100% of their principal amount of the
Securities to be redeemed and (b) the sum of the present values of the remaining
scheduled payments of principal and interest thereon (exclusive of interest
accrued to such Redemption Date) discounted to such Redemption Date on a
semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at
the Treasury Rate plus [__] basis points, plus accrued and unpaid interest on
the principal amount being redeemed to such Redemption Date; provided, however,
that installments of interest on Securities that are due and payable on an
Interest Payment Date falling on or prior to the relevant Redemption Date shall
be payable to the holders of such Securities, registered as such at the close of
business on the relevant Record Date according to their terms and provisions of
the Indenture.

          "Treasury Rate" means, with respect to any Redemption Date for the
Securities, (a) the yield, under the heading that represents the average for the
immediately preceding week, appearing in the most recently published statistical
release designated "H.15(519)" or any successor publication that is published
weekly by the Board of Governors of the Federal Reserve System and that
establishes yields on actively traded United States Treasury securities adjusted
to constant maturity under the caption "Treasury Constant Maturities" for the
maturity corresponding to the Comparable Treasury Issue (if no maturity is
within three months before or after the Maturity Date, yields for the two
published maturities most closely corresponding to the Comparable Treasury Issue
shall be determined and the Treasury Rate shall be interpolated or extrapolated
from such yields on a straight-line basis, rounding to the nearest month) or (b)
if such release (or any successor release) is not published during the week
preceding the calculation date or does not contain such yields, the rate per
annum equal to the semi-annual equivalent yield to maturity of the Comparable
Treasury Issue, calculated using 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. The Treasury Rate shall be calculated
on the third Business Day preceding the Redemption Date.

          "Comparable Treasury Issue" means, the United States Treasury security
selected by the Independent Investment Banker as having a maturity comparable to
the remaining term of the Securities to be redeemed that would be utilized, at
the time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the
remaining term of the Securities.
    
          "Independent Investment Banker" means                           
or, if such firms are unwilling or unable to select the Comparable Treasury
Issue, an independent investment banking institution of national standing
appointed by the Company.     

          "Comparable Treasury Price" means, with respect to any Redemption
Date, (a) the average of four Reference Treasury Dealer Quotations for such
Redemption Date, after excluding the highest and lowest such Reference Treasury
Dealer Quotations, or (b) if the Trustee obtains fewer than four such Reference
Treasury Dealer Quotations, the average of all such Quotations.
    
          "Reference Treasury Dealer" means each of 
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.     

          "Reference Treasury Dealer Quotations" means, with respect to the
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.

                                      A-5

 
          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.

          The Indenture contains provisions for defeasance of (a) the entire
indebtedness of this Security and (b) certain restrictive covenants upon
compliance by the Company with certain conditions set forth therein.

          If an Event of Default with respect to Securities of this series shall
occur and be continuing, the unpaid principal of the Securities of this series
may be declared due and payable in the manner and with the effect provided in
the Indenture and, upon such declaration, the Trustee can demand the redemption
of the Senior Note Mortgage Bonds as 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
Securities at the time Outstanding of all series to be affected (voting as a
class). 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.

          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 premium, if any) and
interest, if any, on this Security at the time, 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
premium, if any) and interest, if any, 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.
    
          The Securities of this series are issuable only in registered form
without coupons in denominations of $           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.     

          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.

                                      A-6

 
          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