NORTHWESTERN PUBLIC SERVICE CO
424A, 1995-08-03
ELECTRIC & OTHER SERVICES COMBINED
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<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.   THIS  PRELIMINARY   PROSPECTUS  SUPPLEMENT   AND  THE  ACCOMPANYING
PRELIMINARY PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION
OF AN OFFER  TO BUY  NOR SHALL  THERE BE  ANY SALE  OF THESE  SECURITIES IN  ANY
JURISDICTION  IN WHICH SUCH OFFER, SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO  REGISTRATION  OR  QUALIFICATION  UNDER  THE  SECURITIES  LAWS  OF  ANY  SUCH
JURISDICTION.
<PAGE>
PROSPECTUS SUPPLEMENT (SUBJECT TO COMPLETION, ISSUED JULY 28, 1995)
(TO PROSPECTUS DATED              , 1995)

                                  $60,000,000
                      NORTHWESTERN PUBLIC SERVICE COMPANY

                      % MORTGAGE BONDS DUE              , 2005
                               -----------------

                        INTEREST PAYABLE      AND

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

   
THE  MORTGAGE  BONDS  OFFERED  HEREBY  (THE  "OFFERED  BONDS")  WILL  MATURE  ON
           , 2005.  THE OFFERED  BONDS  WILL NOT  BE REDEEMABLE  PRIOR  TO
      MATURITY.   THE  OFFERED  BONDS  WILL  BE  ISSUED  IN  THE  FORM  OF
      FULLY-REGISTERED  BOOK-ENTRY   OFFERED  BONDS   WHICH  WILL   BE
          DEPOSITED  WITH, AND REGISTERED IN THE NAME OF A NOMINEE OF,
          THE DEPOSITORY       TRUST COMPANY. SEE "CERTAIN TERMS
                         OF THE OFFERED BONDS" HEREIN.
    

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

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES  AND
   EXCHANGE  COMMISSION  OR ANY  STATE  SECURITIES COMMISSION  NOR  HAS THE
     SECURITIES  AND  EXCHANGE  COMMISSION   OR  ANY  STATE   SECURITIES
        COMMISSION  PASSED  UPON THE  ACCURACY  OR ADEQUACY  OF THIS
            PROSPECTUS SUPPLEMENT OR THE PROSPECTUS TO WHICH IT
                   RELATES.  ANY  REPRESENTATION  TO   THE
                         CONTRARY IS A CRIMINAL OFFENSE.

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

                    PRICE    % AND ACCRUED INTEREST, IF ANY

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

<TABLE>
<CAPTION>
                                                                       UNDERWRITING
                                                  PRICE TO             DISCOUNTS AND            PROCEEDS
                                                 PUBLIC (1)           COMMISSIONS (2)       TO COMPANY (1)(3)
                                            ---------------------  ---------------------  ---------------------
<S>                                         <C>                    <C>                    <C>
PER OFFERED BOND..........................            %                      %                      %
TOTAL.....................................            $                      $                      $
<FN>
- ---------
     (1)  PLUS ACCRUED INTEREST, IF ANY, FROM             , 1995.
     (2)  THE  COMPANY HAS AGREED TO  INDEMNIFY THE UNDERWRITERS AGAINST CERTAIN
          LIABILITIES, INCLUDING LIABILITIES UNDER  THE SECURITIES ACT OF  1933,
          AS AMENDED.
     (3)  BEFORE  DEDUCTING  EXPENSES  PAYABLE  BY  THE  COMPANY,  ESTIMATED  AT
          $700,000.
</TABLE>

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

    THE OFFERED  BONDS ARE  OFFERED, SUBJECT  TO  PRIOR SALE,  WHEN, AS  AND  IF
ACCEPTED BY THE UNDERWRITERS AND SUBJECT TO APPROVAL OF CERTAIN LEGAL MATTERS BY
WINTHROP,  STIMSON,  PUTNAM  &  ROBERTS, COUNSEL  FOR  THE  UNDERWRITERS.  IT IS
EXPECTED THAT DELIVERY OF THE OFFERED BONDS WILL BE MADE ON OR ABOUT AUGUST    ,
1995  THROUGH THE BOOK-ENTRY FACILITIES OF  THE DEPOSITORY TRUST COMPANY AGAINST
PAYMENT THEREFOR IN IMMEDIATELY AVAILABLE FUNDS.

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

MORGAN STANLEY & CO.                             NATWEST CAPITAL MARKETS LIMITED
       INCORPORATED

AUGUST   , 1995
<PAGE>
NO DEALER, SALESMAN OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY  INFORMATION
OR  TO MAKE ANY  REPRESENTATIONS, OTHER THAN THOSE  CONTAINED OR INCORPORATED BY
REFERENCE IN  THIS PROSPECTUS  SUPPLEMENT AND  THE ACCOMPANYING  PROSPECTUS,  IN
CONNECTION  WITH  THE  OFFERING  MADE  BY  THIS  PROSPECTUS  SUPPLEMENT  AND THE
ACCOMPANYING  PROSPECTUS,   AND  IF   GIVEN  OR   MADE,  SUCH   INFORMATION   OR
REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY
OR  THE UNDERWRITERS. THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS
DO NOT CONSTITUTE AN OFFER OR A  SOLICITATION BY ANY PERSON IN ANY  JURISDICTION
IN  WHICH IT IS UNLAWFUL FOR SUCH PERSON  TO MAKE SUCH AN OFFER OR SOLICITATION.
THE DELIVERY OF THIS  PROSPECTUS SUPPLEMENT AND  THE ACCOMPANYING PROSPECTUS  AT
ANY  TIME DOES NOT IMPLY  THAT THE INFORMATION HEREIN IS  CORRECT AS OF ANY TIME
SUBSEQUENT TO  THE  DATE  OF  THE PROSPECTUS  SUPPLEMENT  AND  THE  ACCOMPANYING
PROSPECTUS.

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

                               TABLE OF CONTENTS

   
<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                                                                                                          <C>
                                                PROSPECTUS SUPPLEMENT
Prospectus Supplement Summary..............................................................................        S-3
The Company................................................................................................        S-3
Summary Financial Information..............................................................................        S-5
Use of Proceeds............................................................................................        S-6
Certain Terms of the Offered Bonds.........................................................................        S-6
Underwriting...............................................................................................        S-9
                                                      PROSPECTUS
Available Information......................................................................................          1
Documents Incorporated by Reference........................................................................          1
The Company................................................................................................          2
Pending Acquisition of Synergy Group Incorporated..........................................................          5
Northwestern Public Service Company and Synergy Group Incorporated Pro Forma Financial Information.........         10
The NWPS Trusts............................................................................................         19
Use of Proceeds............................................................................................         20
Ratio of Earnings to Fixed Charges and Earnings to Combined Fixed Charges and Preferred Dividends..........         20
Description of the Mortgage Bonds..........................................................................         20
Description of the Subordinated Debt Securities............................................................         32
Description of the Preferred Securities....................................................................         40
Description of the Guarantees..............................................................................         41
Description of the Common Stock............................................................................         43
Legal Opinions.............................................................................................         45
Experts....................................................................................................         46
Plan of Distribution.......................................................................................         46
</TABLE>
    

    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE  MARKET PRICE OF THE OFFERED  BONDS
AT  LEVELS ABOVE  THAT WHICH  MIGHT OTHERWISE PREVAIL  IN THE  OPEN MARKET. SUCH
STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.

                                      S-2
<PAGE>
                         PROSPECTUS SUPPLEMENT SUMMARY

    THE  FOLLOWING  SUMMARY  IS QUALIFIED  IN  ITS  ENTIRETY BY,  AND  SHOULD BE
CONSIDERED  IN  CONJUNCTION  WITH,  THE  INFORMATION  AND  FINANCIAL  STATEMENTS
APPEARING   ELSEWHERE  IN  THIS  PROSPECTUS   SUPPLEMENT  AND  THE  ACCOMPANYING
PROSPECTUS AND THE DOCUMENTS INCORPORATED THEREIN BY REFERENCE.

                                  THE COMPANY

    The  principal  business  of   Northwestern  Public  Service  Company   (the
"Company") is energy distribution. The Company is engaged in providing regulated
electric  and natural  gas service  in South Dakota  and natural  gas service in
Nebraska. The Company serves approximately 54,900 electric customers and  75,000
gas  customers  representing  a  diverse  mix  of  residential,  commercial  and
industrial customers. In  addition, the  Company has  investments in  nonutility
businesses  and has  recently contracted  to acquire  Synergy Group Incorporated
("Synergy"), a  major  propane  distribution  company.  See  "The  Company"  and
"Pending   Acquisition  of  Synergy  Group  Incorporated"  in  the  accompanying
Prospectus.

    The  Company's  electric  business  generates,  transmits  and   distributes
electricity to over 100 communities in eastern South Dakota. In 1994, 46% of the
Company's  total operating  revenues were from  the sale of  electric energy. At
December  31,  1994,  the  aggregate  capacity  of  all  Company-owned  electric
generating  units was  309,000 kilowatts ("kw"),  consisting of  202,000 kw from
jointly-owned baseload plants  and 107,000 kw  from internal combustion  turbine
and  diesel  units used  primarily for  peaking purposes.  All of  the Company's
baseload plants  are fueled  by  coal. The  Company has  maintained  competitive
electric  rates when  compared to  neighboring utilities  and has  a competitive
electric baseload  generating production  cost, which  includes fuel  and  plant
operating expenses, of less than 1.5 CENTS per kilowatt hour.

    The  Company's natural  gas business  purchases, transports  and distributes
natural gas to over 50 communities in eastern South Dakota and 4 communities  in
central  Nebraska. In 1994,  40% of the Company's  total operating revenues were
from the sale of natural gas. The Company purchases gas supply from more than 20
domestic and Canadian suppliers and  transports natural gas supply through  five
pipelines.  Gas  agreements provide  for firm  deliverable pipeline  capacity of
approximately 98,900  million  british  thermal units  ("MMBTU"),  per  day.  To
supplement  firm gas supplies,  the Company owns six  propane-air plants and has
contracts for underground natural gas storage services. Over the last five years
the Company  has  expanded its  gas  distribution  operations to  serve  29  new
communities in South Dakota.

    The Company's business strategy is summarized by three primary objectives:

    - To  enhance the Company's competitive  position in its energy distribution
      businesses;

    - To  expand  energy  sales  and  markets  with  value-added  services   for
      customers; and

    - To  provide earnings and  dividend growth and  increased shareholder value
      through its energy distribution businesses and investment and  acquisition
      activities.

By  enhancing the competitive position of its core electric and gas distribution
businesses and expanding its energy sales  and markets, the Company believes  it
will  position itself to be successful  in the increasingly competitive electric
and gas  distribution businesses  anticipated over  the next  several years.  To
supplement  growth strategies  in its electric  and natural  gas businesses, the
Company also plans  to seek  new investment and  acquisition opportunities  that
have  demonstrable growth potential.  The primary focus  of these investment and
acquisition activities  is  targeted  in  energy  distribution  businesses.  The
Company  also  plans  to  pursue  opportunities  in  non-energy  businesses that
complement its  existing  operations  and  provide  the  capability  to  enhance
shareholder value.

    In  May 1995,  the Company contracted  to acquire Synergy,  a retail propane
distributor serving over 200,000  customers from 152 locations  in 23 states  in
the  eastern and south central  regions of the U.S.  See "Pending Acquisition of
Synergy   Group    Incorporated"   in    the   accompanying    Prospectus.    In

                                      S-3
<PAGE>
accordance  with  its  strategic plan,  the  Company believes  that  the Synergy
propane distribution operations are complementary to the Company's electric  and
natural  gas businesses.  Propane is the  nation's fourth  largest energy source
after electricity, natural gas  and fuel oil. The  acquisition price to be  paid
for  Synergy is $137.5 million cash (subject to certain adjustments) and certain
securities of the Company's acquisition subsidiary. The Company has entered into
an agreement with a third party for the sale of certain Synergy properties which
will reduce the  cash portion  of the  acquisition price  to approximately  $100
million.  The  Company  has  executed a  management  agreement  with  Empire Gas
Corporation ("Empire Gas") for the joint management of the properties after  the
acquisition.  Empire  Gas  is  the  nation's  eleventh  largest  retail  propane
distributor. Subsequent to the  acquisition and expected  third party sale,  the
Company's  total  assets  will consist  of  approximately 65%  electric  and gas
distribution, 25% propane distribution and  10% marketable securities and  other
diversified investments.

    The  Company's principal  executive offices are  located at  33 Third Street
S.E., Huron,  South  Dakota  57350.  The Company's  telephone  number  is  (605)
352-8411.

                                      S-4
<PAGE>
                         SUMMARY FINANCIAL INFORMATION
            (in thousands, except percentages and per share amounts)

    The financial information presented below should be read in conjunction with
the  Company's historical financial  statements and the  notes thereto which are
incorporated by reference herein and the pro forma financial statements and  the
notes  thereto included in the accompanying  Prospectus. The pro forma financial
information contained in the right column, reflecting the pending acquisition of
Synergy and related matters, was prepared  solely to comply with Regulation  S-X
of  the Securities and Exchange Commission.  The pro forma financial information
is based on the assumptions and adjustments set forth under "Northwestern Public
Service Company and Synergy Group Incorporated Pro Forma Financial  Information"
in the accompanying Prospectus.

<TABLE>
<CAPTION>
                                                                                                         PRO FORMA(1)
                                                                                                   ------------------------
                                                                                         THREE                      THREE
                                                                                        MONTHS         YEAR        MONTHS
                                                           YEAR ENDED DECEMBER 31,       ENDED        ENDED         ENDED
                                                         ----------------------------  MARCH 31,   DECEMBER 31,   MARCH 31,
                                                           1992      1993      1994      1995          1994        1995(2)
                                                         --------  --------  --------  ---------   ------------   ---------
<S>                                                      <C>       <C>       <C>       <C>         <C>            <C>
INCOME STATEMENT DATA:
  Revenues.............................................  $119,197  $153,257  $157,266   $50,754      $256,634      $82,612
  Operating income.....................................    24,809    27,246    30,368    12,882        37,985       20,088
  Net income...........................................    13,721    15,191    15,440     7,103        17,463       13,840
  Net income available for common stock................    13,578    15,070    15,320     7,073        15,300       13,299
  Earnings per share...................................      1.77      1.96      2.00      0.92          1.74         1.51
  Dividends paid per common share......................      1.59      1.63      1.67     0.425          1.67        0.425
  Weighted average shares outstanding..................     7,677     7,677     7,677     7,677         8,805        8,805
</TABLE>

<TABLE>
<CAPTION>
                                                                                     AS OF MARCH 31, 1995
                                                                             -------------------------------------
                                                                              ACTUAL            PRO FORMA
                                                                             --------           ---------
<S>                                                                          <C>       <C>      <C>         <C>
BALANCE SHEET DATA:
  Assets...................................................................  $363,432           $ 487,435
                                                                             --------           ---------
                                                                             --------           ---------
  Capitalization Summary
    Long-term debt
     (including current maturities)........................................  $129,888   51.6%   $ 181,592    50.7%
    Company-Obligated Mandatorily Redeemable Preferred Securities of
     Subsidiary Trust (3)..................................................     --      --         24,212     6.8
    Cumulative preferred stock (including portion to be redeemed within one
     year).................................................................     2,640    1.1        2,640     0.7
    Common Stock Equity
    Common stock...........................................................    26,870   --         31,179    --
    Additional paid-in capital.............................................    29,923   --         56,398    --
    Retained earnings......................................................    59,183   --         59,183    --
    Unrealized gain on investments, net....................................     3,181   --          3,181    --
                                                                             --------           ---------
                                                                             $119,157   47.3    $ 149,941    41.8
                                                                             --------  ------   ---------   ------
      Total................................................................  $251,685  100.0%   $ 358,385   100.0%
                                                                             --------  ------   ---------   ------
                                                                             --------  ------   ---------   ------
<FN>
- ----------
(1)  The  pro  forma  financial  information does  not  purport  to  present the
     financial position  or  results  of  operations  of  the  Company  had  the
     acquisition  of Synergy actually been completed  as of the dates indicated.
     In addition,  the  pro  forma  financial  information  is  not  necessarily
     indicative of future results of operations.
(2)  The  results of operations of Synergy for  the three months ended March 31,
     1995 are not indicative of a full year's results of operations.
(3)  As described in  the accompanying  Prospectus, all  of the  assets of  NWPS
     Capital,  the  subsidiary  trust,  will  be  approximately  $31  million of
     Subordinated Debt Securities of the Company  which will bear interest at  a
     rate  of     %  per annum, assuming  the issuance of  1.2 million Preferred
     Securities. Pro Forma amounts shown in the table reflect the portion of the
     estimated net proceeds of the offering  of Preferred Securities to be  used
     to fund the acquisition of Synergy.
</TABLE>

                                      S-5
<PAGE>
                                USE OF PROCEEDS

    The  net proceeds from the sale of  approximately $50 million of the Offered
Bonds will be  applied to  fund the  acquisition of  Synergy, including  certain
transaction  expenses. The additional net proceeds  from the sale of the Offered
Bonds will be  applied to  repay short  term debt of  the Company.  See "Use  of
Proceeds" in the accompanying Prospectus.

                       CERTAIN TERMS OF THE OFFERED BONDS

   
    GENERAL.   The  Offered Bonds are  being issued under  the Company's General
Mortgage Indenture  and Deed  of Trust  dated as  of August  1, 1993  (the  "New
Mortgage")   between  the  Company  and   The  Chase  Manhattan  Bank  (National
Association), as  trustee  (the  "New Mortgage  Trustee"),  as  supplemented  by
various  supplemental indentures, including the  Supplemental Indenture dated as
of         , 1995 relating to the Offered Bonds (the "Supplemental  Indenture").
The  Offered Bonds will be issued  on the basis of a  First Mortgage Bond in the
principal amount of $60,000,000 (the "Pledged Bond") issued to the New  Mortgage
Trustee  under  the  Company's  Indenture  dated  August  1,  1940  (the  "First
Mortgage")  between  the  Company  and   The  Chase  Manhattan  Bank   (National
Association)  and C. J.  Heinzelmann, as successor  Trustees, as supplemented by
various supplemental  indentures,  including the  supplemental  indenture  dated
        ,  1995 relating to the Pledged Bond.  The Offered Bonds will be secured
primarily by the First Mortgage Bonds  (including the Pledged Bond) held by  the
New  Mortgage  Trustee.  The  First  Mortgage  constitutes,  subject  to certain
exceptions, a first  lien on substantially  all properties of  the Company.  The
Offered  Bonds will  also be  secured by  the lien  of the  New Mortgage  on the
Company's  properties  used  in  the  generation,  production,  transmission  or
distribution  of electricity or the distribution of  gas in any form and for any
purpose in the States of South Dakota  or Nebraska, which lien is junior to  the
lien  of the  First Mortgage.  See "Description  of the  Mortgage Bonds"  in the
accompanying Prospectus.
    

   
    The Company  has  reached  an agreement  with  the  holders of  all  of  its
outstanding  First Mortgage Bonds  (other than the First  Mortgage Bonds held by
the New Mortgage Trustee) to exchange  the First Mortgage Bonds of such  holders
for  Mortgage Bonds issued under the New  Mortgage in the same principal amount,
bearing the same interest rate, maturing on the same maturity date and otherwise
containing financial terms  that are comparable  to the terms  contained in  the
existing  First Mortgage Bonds. The Company  has agreed that, upon completion of
such exchange (at which point  the only First Mortgage  Bonds will be the  First
Mortgage  Bonds (including the Pledged Bond)  held by the New Mortgage Trustee),
the Company will cause the New Mortgage Trustee to surrender for cancellation to
the Trustees under the First Mortgage all of the First Mortgage Bonds (including
the Pledged Bond) then held by the New Mortgage Trustee. The Company has further
agreed, promptly following  the surrender  by the  New Mortgage  Trustee of  the
First  Mortgage Bonds (including the Pledged Bond) then held by it, to cause the
Trustees to cancel and discharge the lien of the First Mortgage.
    

   
    As described under the  caption "Description of the  Mortgage Bonds" in  the
accompanying  Prospectus, if and when no Class  "A" Mortgages are in effect, the
New Mortgage  will constitute  a first  mortgage  lien on  all property  of  the
Company subject thereto. As also described under such caption, as of the date of
this  Prospectus Supplement, the First Mortgage  is the only Class "A" Mortgage.
Accordingly, upon the discharge of the  lien of the First Mortgage as  described
above,  the Offered Bonds will  be secured directly by  a first mortgage lien on
all property of the Company subject to the New Mortgage.
    

    The following  summaries of  certain  provisions of  the New  Mortgage,  the
Supplemental  Indenture and the Offered Bonds  (referred to in the Prospectus as
"Mortgage Bonds") hereby  supplement, and to  the extent inconsistent  therewith
replace,  the description  of the general  terms and provisions  of the Mortgage
Bonds set forth under "Description of the Mortgage Bonds" in the Prospectus,  to
which  description  reference is  hereby made.  The  following summaries  do not
purport to be complete and are

                                      S-6
<PAGE>
subject to, and are qualified in their entirety by reference to, the  provisions
of  the New Mortgage and the Supplemental  Indenture. The following makes use of
defined terms in the New Mortgage and the Supplemental Indenture.

   
    INTEREST RATE  AND MATURITY.   The  Offered Bonds  will bear  interest  from
           ,  1995  at  the rate  of    % per  annum,  payable  semi-annually on
           and             , beginning             . The interest so payable  on
any            or            will be paid to the person in whose name an Offered
Bond  is  registered  at the  close  of  business on  the  immediately preceding
           or            , as the case may be. The Offered Bonds will mature  on
            , 2005.
    

   
    REDEMPTION.  The Offered Bonds will not be redeemable prior to maturity.
    

    BOOK-ENTRY  SYSTEM.    The Offered  Bonds  will  be issued  in  the  form of
fully-registered book-entry Offered Bonds  which will be  deposited with, or  on
behalf of, The Depository Trust Company (the "Depositary") and registered in the
name  of the Depositary's nominee (each, a "Book-Entry Security"). Except as set
forth below, a Book-Entry Security may not  be transferred except as a whole  by
the Depositary or by a nominee of the Depositary to the Depositary, by a nominee
of  the Depositary to another nominee of  the Depositary or by the Depositary or
any such  nominee  to  a successor  of  the  Depositary or  a  nominee  of  such
successor.

    The  Depositary has advised  the Company and  the Underwriters that  it is a
limited-purpose trust company organized under the laws of the State of New York,
a "banking  organization" within  the meaning  of the  New York  banking law,  a
member  of  the  Federal Reserve  System,  a "clearing  corporation"  within the
meaning of  the  New  York  Uniform Commercial  Code  and  a  "clearing  agency"
registered  pursuant to the provisions of Section 17A of the Securities Exchange
Act of 1934, as amended.  The Depositary was created  to hold securities of  its
participants  and  to  facilitate  the clearance  and  settlement  of securities
transactions among  the  participants  in  such  securities  through  electronic
book-entry changes in accounts of the participants, thereby eliminating the need
for  physical movement of securities certificates. The Depositary's participants
include securities  brokers and  dealers  (including the  Underwriters),  banks,
trust  companies, clearing corporations and certain other organizations, some of
whom  (and/or  their  representatives)  own   the  Depositary.  Access  to   the
Depositary's  book-entry  system is  also available  to  others, such  as banks,
brokers, dealers and trust companies that clear through or maintain a  custodial
relationship  with a participant, either directly or indirectly. Persons who are
not participants may  beneficially own  securities held by  the Depositary  only
through  participants. The rules  applicable to the Depositary  are on file with
the Securities and Exchange Commission.

    Upon  the  issuance  by  the  Company  of  the  Book-Entry  Securities,  the
Depositary  will credit, on its book-entry registration and transfer system, the
principal amount of the Offered Bonds represented by such Book-Entry  Securities
to the accounts of participants. The accounts to be credited shall be designated
by the applicable Underwriter. Ownership of beneficial interests in a Book-Entry
Security  will be  limited to  participants or  persons that  may hold interests
through participants.  Beneficial interests  in a  Book-Entry Security  will  be
shown  on,  and the  transfer  thereof will  be  effected only  through, records
maintained  by  the  Depositary  (with   respect  to  beneficial  interests   of
participants)  or by  participants, or persons  that may  hold interests through
participants (with respect  to beneficial interests  to beneficial owners).  The
laws  of some states require that certain purchasers of securities take physical
delivery of such securities in certificated form. Such limits and such laws  may
impair the ability to transfer beneficial interests in a Book-Entry Security.

    For  a Book-Entry Security, so long as  the Depositary or its nominee is the
registered owner of a Book-Entry Security, the Depositary or its nominee, as the
case may be, will be  considered the sole owner or  holder of the Offered  Bonds
represented by such Book-Entry Security for all purposes under the New Mortgage.
Except  as  provided  below,  owners of  beneficial  interests  in  a Book-Entry
Security

                                      S-7
<PAGE>
will not  be entitled  to  have Offered  Bonds  represented by  such  Book-Entry
Security  registered in their names, will not  receive or be entitled to receive
physical delivery of  such Offered Bonds  in certificated form  and will not  be
considered the owners or holders thereof under the New Mortgage.

    Principal  and interest payments on Offered  Bonds issued in book-entry form
and represented by the Book-Entry Securities will be made by the Company to  the
Depositary  or its nominee, as  the case may be, as  the registered owner of the
related Book-Entry Securities. The Company  will not have any responsibility  or
liability  for any aspect of the records relating to or payments made on account
of  beneficial  ownership  interests  in  the  Book-Entry  Securities,  or   for
maintaining,  supervising or reviewing  any records relating  to such beneficial
ownership interests. The Company  expects that the  Depositary, upon receipt  of
any  payment of principal  or interest in respect  of any Book-Entry Securities,
will credit immediately the accounts of the related participants with payment in
amounts proportionate to their respective  beneficial interest in the  principal
amount  of such Book-Entry Securities as shown on the records of the Depositary.
The Company also expects  the payments by participants  to owners of  beneficial
interests  in the  Book-Entry Securities will  be governed  by standing customer
instructions and customary practices,  as is now the  case with securities  held
for the accounts of customers in bearer form or registered in "street name," and
will be the responsibility of such participants.

    If  the  Depositary  is at  any  time  unwilling or  unable  to  continue as
depositary and a successor depositary is not appointed by the Company within  90
days,  the Company will issue Offered Bonds in certificated form in exchange for
each Book-Entry Security. In addition, the Company may at any time determine not
to have Offered  Bonds represented  by the  Book-Entry Securities.  In any  such
instance,  owners of beneficial interests in  such Book-Entry Securities will be
entitled to physical  delivery of Offered  Bonds in certificated  form equal  in
principal  amount to  such beneficial interests  and to have  such Offered Bonds
registered in its  name. Offered Bonds  so issued in  certificated form will  be
issued  in denominations  of $1,000  or any  larger amount  that is  an integral
multiple thereof and will be issued in registered form only, without coupons.

    SAME-DAY PAYMENT AND SETTLEMENT.  All payments of principal of and  interest
on the Offered Bonds will be made by the Company in same-day funds.

   
    BASIS  OF ISSUANCE.   The Offered Bonds will  be issued on  the basis of the
Pledged Bond. The Pledged Bond will  be issued and delivered to, and  registered
in  the name of, the New  Mortgage Trustee or its nominee  and will be owned and
held by the New Mortgage Trustee, subject to the provisions of the New Mortgage,
for the benefit of  the Holders (as defined  in the accompanying Prospectus)  of
the  Offered Bonds and all other outstanding Mortgage Bonds issued under the New
Mortgage, and the Company will have no interest in the Pledged Bond. The Pledged
Bond will be issued in the principal  amount of $60,000,000 and, as is the  case
with  the Offered Bonds, will mature on             , 2005 will bear interest at
the rate of     % per annum, and will be payable  semi-annually on
and               , beginning                    . Any payment by the Company of
principal of, or  interest on,  the Pledged  Bond shall  be applied  by the  New
Mortgage  Trustee to the payment of any  principal, or interest, as the case may
be, in respect of the Offered Bonds which is then due and, to the extent of such
application, the obligation of the Company  under the New Mortgage to make  such
payment in respect of the Offered Bonds will be deemed satisfied and discharged.
Any  payment by the Company under the  New Mortgage of principal of, or interest
on, the Offered  Bonds will, to  the extent  thereof, be deemed  to satisfy  and
discharge  the obligation  of the  Company to  make a  payment of  principal, or
interest, as the case may be, in respect of the Pledged Bond which is then due.
    

                                      S-8
<PAGE>
                                  UNDERWRITING

    Under the terms and subject to the conditions contained in the  Underwriting
Agreement  dated the  date hereof, the  Underwriters named  below have severally
agreed to purchase,  and the  Company has agreed  to sell  to the  Underwriters,
severally, the following respective principal amounts of the Offered Bonds:

<TABLE>
<CAPTION>
                                                                                    PRINCIPAL
                                                                                  AMOUNT OF THE
UNDERWRITERS                                                                      OFFERED BONDS
- --------------------------------------------------------------------------------  --------------
<S>                                                                               <C>
Morgan Stanley & Co. Incorporated...............................................  $
NatWest Capital Markets Limited.................................................
    Total.......................................................................
                                                                                  --------------
                                                                                  --------------
</TABLE>

    The  Underwriting  Agreement provides  that the  obligations of  the several
Underwriters to pay for and accept delivery of the Offered Bonds are subject  to
approval  of certain legal  matters by counsel and  to certain other conditions.
The Underwriters are  committed to pay  for and  accept delivery of  all of  the
Offered  Bonds  if  any are  taken;  provided that  under  certain circumstances
involving a default of Underwriters, less than  all of the Offered Bonds may  be
purchased.

    The  Underwriters  initially  propose to  offer  part of  the  Offered Bonds
directly to the public at the public offering price set forth on the cover  page
of  this Prospectus  Supplement and  part to  certain dealers  at a  price which
represents a concession not  in excess of     % of  the principal amount of  the
Offered  Bonds.  The  Underwriters may  allow  and  such dealers  may  reallow a
concession of    % of the principal amount of the Offered Bonds to certain other
dealers. After the initial  public offering, the public  offering price and  the
other selling items may be changed.

    Each series of Offered Bonds will be a new issue of securities and will have
no  established trading  market. Any  Underwriter to  whom Offered  Bonds of any
series are sold for public offering and sale may make a market in such series of
Offered Bonds, but  such Underwriters will  not be  obligated to do  so and  may
discontinue  any market making at  any time without notice.  No assurance can be
given as to the liquidity of, or trading market for, any Offered Bonds.

    The Company  has  agreed  to  indemnify  the  Underwriters  against  certain
liabilities, including liabilities under the Securities Act of 1933, as amended.

    The  Underwriters engage  in (or in  the future may  engage in) transactions
with, and perform services  for, the Company or  its affiliates in the  ordinary
course  of business.  Morgan Stanley  & Co.  Incorporated represents  Synergy in
connection with  the pending  acquisition of  Synergy by  the Company  described
under  "Pending Acquisition of  Synergy Group Incorporated"  in the accompanying
Prospectus. National Westminster Bank  P l c. is  the parent of NatWest  Capital
Markets Limited and is serving as the managing agent for the short-term loan for
the Synergy acquisition.

    NatWest  Capital Markets Limited ("NatWest"), a United Kingdom broker-dealer
and a member of  the Securities Futures Authority  Limited, has agreed that,  as
part of the distribution of the Offered Bonds and subject to certain exceptions,
it  will  not offer  or sell  any Offered  Bonds within  the United  States, its
territories or possessions or to persons  who are citizens thereof or  residents
therein.  The Underwriting  Agreement does not  limit sale of  the Offered Bonds
offered hereby outside the United States.

    NatWest has further represented  and agreed that (i)  it has not offered  or
sold and will not offer or sell prior to the date six months after their date of
issue  any Offered  Bonds to  persons in the  United Kingdom,  except to persons
whose ordinary  activities  involve  them in  acquiring,  holding,  managing  or
disposing  of  investments (as  principal or  agent) for  the purposes  of their
businesses or otherwise in  circumstances which have not  resulted and will  not
result in an offer to the public in the United Kingdom within the meaning of the
Public Offers of Securities Regulations 1995, (ii) it has complied with and will
comply  with all applicable  provisions of the Financial  Services Act 1986 with
respect to

                                      S-9
<PAGE>
anything done by  it in  relation to  the Offered  Bonds in,  from or  otherwise
involving the United Kingdom, and (iii) it has only issued or passed on and will
only  issued or  pass on in  the United Kingdom  any document received  by it in
connection with the issue of  the Offered Bonds to a  person who is of the  kind
described  in  Article  11(3) of  the  Financial Services  Act  1986 (Investment
Advertisements) (Exemptions) Order 1995 or is a person to whom such document may
otherwise lawfully be issued or passed on.

                                      S-10
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BY ANY SALE OF THESE  SECURITIES
IN  ANY JURISDICTION IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL
PRIOR TO REGISTRATION  OR QUALIFICATION UNDER  THE SECURITIES LAWS  OF ANY  SUCH
JURISDICTION.
<PAGE>
   
PROSPECTUS (SUBJECT TO COMPLETION, ISSUED JULY 28, 1995)
    

                                  $200,000,000
                      NORTHWESTERN PUBLIC SERVICE COMPANY
                                 MORTGAGE BONDS
                          SUBORDINATED DEBT SECURITIES
                                  COMMON STOCK
                            NWPS CAPITAL FINANCING I
                           NWPS CAPITAL FINANCING II
                           NWPS CAPITAL FINANCING III
                              PREFERRED SECURITIES
                  GUARANTEED TO THE EXTENT SET FORTH HEREIN BY
                      NORTHWESTERN PUBLIC SERVICE COMPANY
                               -----------------

    NORTHWESTERN PUBLIC SERVICE COMPANY, A DELAWARE CORPORATION (THE "COMPANY"),
MAY  OFFER  FROM  TIME  TO  TIME, TOGETHER  OR  SEPARATELY,  (I)  MORTGAGE BONDS
("MORTGAGE  BONDS");  (II)  SUBORDINATED  DEBT  SECURITIES  ("SUBORDINATED  DEBT
SECURITIES");  AND  (III)  COMMON  STOCK, PAR  VALUE  $3.50  PER  SHARE ("COMMON
STOCK").

    NWPS CAPITAL  FINANCING  I,  NWPS  CAPITAL FINANCING  II  AND  NWPS  CAPITAL
FINANCING  III (EACH,  A "NWPS TRUST"),  EACH A STATUTORY  BUSINESS TRUST FORMED
UNDER THE LAWS OF THE STATE OF DELAWARE, MAY OFFER, FROM TIME TO TIME, PREFERRED
SECURITIES REPRESENTING  UNDIVIDED BENEFICIAL  INTERESTS IN  THE ASSETS  OF  THE
RESPECTIVE  NWPS TRUSTS ("PREFERRED  SECURITIES"). THE PAYMENT  OF PERIODIC CASH
DISTRIBUTIONS ("DISTRIBUTIONS")  WITH  RESPECT  TO  PREFERRED  SECURITIES  OF  A
PARTICULAR  NWPS TRUST OUT  OF MONEYS HELD  BY THAT NWPS  TRUST, AND PAYMENTS ON
LIQUIDATION, REDEMPTION OR OTHERWISE WITH RESPECT TO SUCH PREFERRED  SECURITIES,
WILL  BE GUARANTEED BY THE COMPANY TO THE EXTENT DESCRIBED HEREIN ("GUARANTEE").
SEE "DESCRIPTION OF THE GUARANTEES" BELOW. THE COMPANY'S OBLIGATIONS UNDER  EACH
GUARANTEE  ARE  SUBORDINATE  AND  JUNIOR  IN  RIGHT  OF  PAYMENT  TO  ALL  OTHER
LIABILITIES OF THE COMPANY  AND RANK PARI PASSU  WITH THE MOST SENIOR  PREFERRED
STOCK  ISSUED FROM TIME TO TIME BY THE COMPANY. THE SUBORDINATED DEBT SECURITIES
MAY BE ISSUED AND SOLD FROM TIME TO TIME IN ONE OR MORE SERIES BY THE COMPANY TO
A NWPS TRUST, OR A TRUSTEE OF  SUCH TRUST, IN CONNECTION WITH THE INVESTMENT  OF
THE PROCEEDS FROM THE OFFERING OF PREFERRED SECURITIES AND COMMON SECURITIES (AS
DEFINED  HEREIN) OF SUCH NWPS TRUST.  THE SUBORDINATED DEBT SECURITIES PURCHASED
BY A NWPS TRUST MAY BE SUBSEQUENTLY DISTRIBUTED PRO RATA TO HOLDERS OF PREFERRED
SECURITIES AND COMMON SECURITIES IN CONNECTION WITH THE DISSOLUTION OF SUCH NWPS
TRUST UPON  THE  OCCURRENCE  OF  CERTAIN  EVENTS  AS  MAY  BE  DESCRIBED  IN  AN
ACCOMPANYING  PROSPECTUS SUPPLEMENT.  THE SUBORDINATED  DEBT SECURITIES  WILL BE
UNSECURED AND  SUBORDINATE AND  JUNIOR  IN RIGHT  OF  PAYMENT TO  CERTAIN  OTHER
INDEBTEDNESS  OF THE COMPANY AS MAY  BE DESCRIBED IN THE ACCOMPANYING PROSPECTUS
SUPPLEMENT.

    THE MORTGAGE BONDS,  SUBORDINATED DEBT  SECURITIES AND COMMON  STOCK OF  THE
COMPANY,  AND  THE  PREFERRED SECURITIES  OF  ANY NWPS  TRUST,  ARE COLLECTIVELY
REFERRED TO HEREIN AS THE "OFFERED SECURITIES."

   
    THE OFFERED SECURITIES MAY BE ISSUED IN  ONE OR MORE SERIES OR ISSUANCES  IN
AN  AMOUNT NOT  TO EXCEED  IN THE AGGREGATE  $200,000,000, BASED  ON THE INITIAL
OFFERING PRICE, WITH THE AMOUNTS, PRICES AND TERMS TO BE DETERMINED AT OR  PRIOR
TO  THE TIME OF SALE AND SET FORTH IN ONE OR MORE SUPPLEMENTS TO THIS PROSPECTUS
(EACH, A "PROSPECTUS SUPPLEMENT").
    
   
                                                   (CONTINUED ON FOLLOWING PAGE)
    

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

THESE SECURITIES HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE SECURITIES  AND
  EXCHANGE  COMMISSION OR  BY ANY  STATE SECURITIES  COMMISSION NOR  HAS THE
    SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR ADEQUACY  OF  THIS  PROSPECTUS. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                              -------------------

    THE OFFERED SECURITIES WILL BE  SOLD DIRECTLY, THROUGH AGENTS,  UNDERWRITERS
AND  DEALERS, INCLUDING  MORGAN STANLEY &  CO. INCORPORATED,  AS DESIGNATED FROM
TIME  TO  TIME,  OR  THROUGH  A  COMBINATION  OF  SUCH  METHODS.  SEE  "PLAN  OF
DISTRIBUTION."  THE  NAMES  OF  SUCH AGENTS,  UNDERWRITERS  OR  DEALERS  AND ANY
APPLICABLE COMMISSIONS OR DISCOUNTS WILL BE  SET FORTH IN, OR MAY BE  CALCULATED
FROM, THE PROSPECTUS SUPPLEMENT. SEE "PLAN OF DISTRIBUTION" FOR A DESCRIPTION OF
ANY  INDEMNIFICATION ARRANGEMENTS BETWEEN  THE COMPANY, EACH  OF THE NWPS TRUSTS
AND ANY UNDERWRITERS, DEALERS OR AGENTS.

    THIS PROSPECTUS MAY NOT  BE USED TO CONSUMMATE  SALES OF OFFERED  SECURITIES
UNLESS ACCOMPANIED BY A PROSPECTUS SUPPLEMENT.

                              MORGAN STANLEY & CO.
       INCORPORATED

   
          , 1995
    
<PAGE>
   
(CONTINUED FROM PREVIOUS PAGE)
    

   
    CERTAIN  SPECIFIC TERMS OF  THE PARTICULAR OFFERED  SECURITIES IN RESPECT OF
WHICH THIS PROSPECTUS IS  BEING DELIVERED WILL BE  SET FORTH IN AN  ACCOMPANYING
PROSPECTUS  SUPPLEMENT, INCLUDING, WHERE APPLICABLE, THE INITIAL PUBLIC OFFERING
PRICE OF THE OFFERED SECURITIES,  THE NET PROCEEDS THEREOF  TO THE COMPANY OR  A
NWPS  TRUST,  AS  APPLICABLE,  ANY  LISTING  OF  SUCH  OFFERED  SECURITIES  ON A
SECURITIES EXCHANGE AND ANY OTHER SPECIAL TERMS. THE PROSPECTUS SUPPLEMENT  WILL
ALSO SET FORTH CERTAIN OTHER INFORMATION WITH REGARD TO OFFERED SECURITIES BEING
OFFERED,  INCLUDING  WITHOUT  LIMITATION,  THE FOLLOWING:  (I)  IN  THE  CASE OF
MORTGAGE BONDS, THE SERIES  DESIGNATION, AGGREGATE PRINCIPAL AMOUNT,  AUTHORIZED
DENOMINATIONS,  MATURITY,  INTEREST RATE  (WHICH MAY  BE  FIXED OR  VARIABLE) OR
METHOD OF CALCULATION OF INTEREST AND DATE  OF PAYMENT OF ANY INTEREST, AND  ANY
EXCHANGE, CONVERSION, REDEMPTION, SINKING FUND, OR CREDIT ENHANCEMENT PROVISIONS
AND  OTHER SPECIAL TERMS OF  EACH SERIES; (II) IN  THE CASE OF SUBORDINATED DEBT
SECURITIES, THE  SPECIFIC DESIGNATION,  AGGREGATE PRINCIPAL  AMOUNT,  AUTHORIZED
DENOMINATION, MATURITY, INTEREST RATE (WHICH MAY BE FIXED OR VARIABLE) OR METHOD
OF  CALCULATION OF INTEREST, DATE  OF PAYMENT OF ANY  INTEREST, ANY PREMIUM, THE
PLACE OR PLACES WHERE PRINCIPAL  OF, PREMIUM, IF ANY,  AND ANY INTEREST ON  SUCH
SUBORDINATED  DEBT SECURITIES WILL BE PAYABLE, THE RIGHT OF THE COMPANY, IF ANY,
TO DEFER PAYMENT OF INTEREST ON THE SUBORDINATED DEBT SECURITIES AND THE MAXIMUM
LENGTH OF SUCH DEFERRAL PERIOD, ANY EXCHANGE, CONVERSION, REDEMPTION OR  SINKING
FUND  PROVISIONS, AND ANY  SECURITY, SUBORDINATION OR  OTHER TERMS IN CONNECTION
WITH THE OFFERING  AND SALE OF  THE SUBORDINATED DEBT  SECURITIES IN RESPECT  OF
WHICH  THIS PROSPECTUS  IS DELIVERED;  (III) IN  THE CASE  OF COMMON  STOCK, THE
NUMBER OF SHARES  AND THE TERMS  OF OFFERING THEREOF;  AND (IV) IN  THE CASE  OF
PREFERRED   SECURITIES,  THE  DESIGNATION,  NUMBER  OF  SECURITIES,  LIQUIDATION
PREFERENCE PER SECURITY, DISTRIBUTION RATE  (OR METHOD OF CALCULATION  THEREOF),
DATES ON WHICH DISTRIBUTIONS SHALL BE PAYABLE AND DATES FROM WHICH DISTRIBUTIONS
SHALL ACCRUE, ANY VOTING RIGHTS, ANY EXCHANGE, CONVERSION, REDEMPTION OR SINKING
FUND  PROVISIONS,  ANY  OTHER RIGHTS,  PREFERENCES,  PRIVILEGES,  LIMITATIONS OR
RESTRICTIONS RELATING TO THE PREFERRED SECURITIES  AND THE TERMS UPON WHICH  THE
PROCEEDS  OF THE SALE  OF THE PREFERRED  SECURITIES SHALL BE  USED TO PURCHASE A
SPECIFIC SERIES OF SUBORDINATED DEBT SECURITIES OF THE COMPANY. IF SO  SPECIFIED
IN  THE APPLICABLE  PROSPECTUS SUPPLEMENT, OFFERED  SECURITIES MAY  BE ISSUED IN
WHOLE OR IN PART IN THE FORM OF ONE OR MORE TEMPORARY OR GLOBAL SECURITIES.
    

   
    THE PROSPECTUS SUPPLEMENT WILL  ALSO CONTAIN INFORMATION, WHERE  APPLICABLE,
ABOUT  CERTAIN UNITED STATES  FEDERAL INCOME TAX  CONSIDERATIONS RELATING TO THE
OFFERED SECURITIES COVERED BY THE PROSPECTUS SUPPLEMENT.
    
<PAGE>
   
    For United Kingdom Purchasers: The Offered Securities may not be sold in the
United  Kingdom other than to persons whose  ordinary business is to buy or sell
securities, whether as principal or agent  (except in circumstances that do  not
constitute  an offer to  the public within  the meaning of  the Companies Act of
1985), and this Prospectus may only be issued or passed on to any person in  the
United  Kingdom if  that person is  of a kind  described in Article  9(3) of the
Financial Services  Act of  1986 (Investment  Advertisements) (Exemption)  Order
1988, as amended.
    

   
                             AVAILABLE INFORMATION
    

    The  Company and the NWPS Trusts have filed with the Securities and Exchange
Commission (the "Commission")  a Registration Statement  on Form S-3  (including
any  amendments thereto, the "Registration  Statement") under the Securities Act
of 1933,  as  amended  (the  "Securities Act"),  with  respect  to  the  Offered
Securities. This Prospectus does not contain all of the information set forth in
the  Registration  Statement and  the  exhibits and  schedules  thereto, certain
portions of which  have been omitted  pursuant to the  rules of the  Commission.
Statements made in this Prospectus as to the contents of any contract, agreement
or  other  document are  not  necessarily complete.  With  respect to  each such
contract, agreement or other document filed  or incorporated by reference as  an
exhibit  to the Registration Statement, reference is  made to such exhibit for a
more complete description  of the matter  involved, and each  such statement  is
qualified in its entirety by such reference.

   
    The  Company and Synergy Group Incorporated ("Synergy"), a corporation which
the Company  proposes to  acquire  (see "Pending  Acquisition of  Synergy  Group
Incorporated"),  are subject to the informational requirements of the Securities
Exchange Act  of  1934, as  amended  (the  "Exchange Act"),  and  in  accordance
therewith  file  reports and  other information  with the  Commission, including
proxy statements in  the case of  the Company, but  not Synergy. Reports,  proxy
statements  and  other information  filed by  the Company  and Synergy  with the
Commission may  be  inspected and  copied  at the  public  reference  facilities
maintained  by the Commission at Room  1024, 450 Fifth Street, N.W., Washington,
D.C. 20549, and  at the  Commission's Regional  Offices located  at Suite  1400,
Northwestern Atrium Center, 500 West Madison Street, Chicago, Illinois 60661 and
at  Seven World Trade  Center, 13th Floor,  New York, New  York 10048. Copies of
such materials  may  be  obtained  from the  Public  Reference  Section  of  the
Commission, 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.
Such  reports, proxy statements and other information concerning the Company may
also be  inspected at  the offices  of the  New York  Stock Exchange,  20  Broad
Street,  New York, New  York 10005, on  which exchange certain  of the Company's
securities are listed.  Information in  this Prospectus  concerning Synergy  has
been  obtained  from reports  and other  information filed  by Synergy  with the
Commission.
    

   
    No separate  financial  statements of  any  of  the NWPS  Trusts  have  been
included  herein. The  Company and  the NWPS  Trusts do  not consider  that such
financial statements would be  material to holders  of the Preferred  Securities
because  (i) all  of the  common securities  of the  NWPS Trusts  will be owned,
directly or indirectly, by the Company,  a reporting company under the  Exchange
Act,  (ii) each of the NWPS Trusts  is a newly organized special purpose entity,
has no operating history  and has no independent  operations but exists for  the
sole  purpose of issuing securities  representing undivided beneficial interests
in the assets of such NWPS Trust, investing the proceeds thereof in Subordinated
Debt Securities issued by  the Company and engaging  in activities necessary  or
incidental  thereto, and (iii) the obligations of  each of the NWPS Trusts under
the  Trust  Securities  (as  defined  herein)  are  fully  and   unconditionally
guaranteed  by the Company to the extent  that such NWPS Trust has funds legally
available to meet such  obligations. See "Description  of the Subordinated  Debt
Securities" and "Description of the Guarantees."
    

                      DOCUMENTS INCORPORATED BY REFERENCE

    The  following  documents  filed  by the  Company  with  the  Commission are
incorporated herein by reference:

        (a) The Company's Annual Report on Form 10-K for the year ended December
    31, 1994;

        (b) The Company's Quarterly  Report on Form 10-Q  for the quarter  ended
    March 31, 1995;

                                       1
<PAGE>
   
        (c) The Company's Current Report on Form 8-K filed May 26, 1995;
    

   
        (d) The Company's Current Report on Form 8-K filed June 21, 1995; and
    

   
        (e) The Company's Current Report on Form 8-K filed July 27, 1995.
    

    All  documents subsequently filed by the  Company pursuant to Section 13(a),
13(c), or 14 or 15(d) of the Exchange Act after the date of this Prospectus  and
prior  to the  termination of  the offering of  the Offered  Securities shall be
deemed to be  incorporated by  reference in  this Prospectus  and to  be a  part
hereof  from the date of filing of  such documents. Any statement contained in a
document incorporated or deemed to be incorporated by reference herein shall  be
deemed  to be  modified or  superseded for  purposes of  this Prospectus  to the
extent that a  statement contained  herein or  in any  other subsequently  filed
document  which also is or is deemed  to be incorporated by reference herein, or
in the  Prospectus  Supplement  for  the  offering  of  the  particular  Offered
Securities,  modifies  or  supersedes  such  statement.  Any  such  statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Prospectus.

    THE COMPANY  WILL  PROVIDE WITHOUT  CHARGE  TO EACH  PERSON,  INCLUDING  ANY
BENEFICIAL  OWNER, TO WHOM A COPY OF  THIS PROSPECTUS HAS BEEN DELIVERED, ON THE
WRITTEN OR ORAL REQUEST OF  SUCH PERSON, A COPY OF  ANY OR ALL OF THE  DOCUMENTS
REFERRED  TO ABOVE WHICH HAVE BEEN OR  MAY BE INCORPORATED IN THIS PROSPECTUS BY
REFERENCE, OTHER  THAN EXHIBITS  TO SUCH  DOCUMENTS WHICH  ARE NOT  SPECIFICALLY
INCORPORATED BY REFERENCE INTO THE INFORMATION THAT THE PROSPECTUS INCORPORATES.
REQUESTS  FOR SUCH  COPIES SHOULD BE  DIRECTED TO MS.  ROGENE THADEN, TREASURER,
NORTHWESTERN PUBLIC SERVICE COMPANY, 33  THIRD STREET S.E., HURON, SOUTH  DAKOTA
57350-1318, TELEPHONE NUMBER 605-353-8320.

                                  THE COMPANY

    The  Company's  principal business  is energy  distribution. The  Company is
engaged  as  an   electric  and   gas  utility   in  generating,   transmitting,
distributing,  and selling  electric energy  in eastern  South Dakota,  where it
furnishes electric service to  approximately 54,900 customers  in more than  100
communities  and adjacent rural areas  and in purchasing, distributing, selling,
and  transporting  natural  gas  to  approximately  75,000  customers  in   four
communities in Nebraska and 56 communities in eastern South Dakota. The Company,
through  its subsidiaries, is  also engaged in  certain nonutility operations as
more fully discussed under the caption "Nonutility Operations" and has  recently
contracted  to acquire Synergy Group  Incorporated, a major propane distribution
company. See "Pending  Acquisition of Synergy  Group Incorporated." The  Company
was  incorporated under the  laws of the State  of Delaware in  1923 and has its
principal office at  33 Third  Street SE,  Huron, South  Dakota 57350-1318.  Its
telephone number is 605-352-8411.

ELECTRIC BUSINESS

    On  a fully consolidated basis, 46% of the Company's 1994 operating revenues
were from the sale  of electric energy. All  of the Company's electric  revenues
are derived from customers in South Dakota.

   
    By customer category, 33% of 1994 total electric sales were from residential
sales,  50%  were  from commercial  and  industrial  sales, 2%  was  from street
lighting and sales to  public authorities, and 15%  were from sales for  resale.
The Company has relatively few large customers in its service territory.
    

    Sales  for resale  primarily include  power pool  sales to  other utilities.
Power pool sales fluctuate from  year to year depending  on a number of  factors
including  the Company's  availability of  excess short-term  generation and the
ability to sell  the excess  power to  other utilities  in the  power pool.  The
Company  also sells power and energy  at wholesale to certain municipalities for
resale and to various governmental agencies.

    The Company shares in the ownership of the Big Stone Generating Plant  ("Big
Stone"),  located near Big Stone City in northeastern South Dakota, the Coyote I
Electric Generating Plant ("Coyote"), located near Beulah, North Dakota, and the
Neal Electric Generating Unit #4 ("Neal"), located near Sioux City.

    At December  31, 1994,  the aggregate  net summer  peaking capacity  of  all
Company owned electric generating units was 309,480 kw, consisting of 105,711 kw
from Big Stone (the Company's 23.4% share),

                                       2
<PAGE>
42,600  kw from  Coyote (the  Company's 10.0% share),  54,169 kw  from Neal (the
Company's 8.7% share), and 107,000 kw from internal combustion turbine units and
small diesel units, used primarily for peaking purposes.

    The Company is a summer peaking utility. The 1994 peak demand of 229,922  kw
occurred  on July  18, 1994.  Total system  capability at  the time  of peak was
309,480 kw. The  reserve margin  for 1994 was  35%. The  minimum reserve  margin
requirement  as determined by the members  of the Mid-Continent Area Power Pool,
of which the Company is a member, is 15%.

    The Company has  an integrated  resource plan to  identify how  to meet  the
energy needs of its customers. The plan includes estimates of customer usage and
programs  to provide for economic, reliable,  and timely supplies of energy. The
plan does not anticipate  the need for  additional baseload generating  capacity
for the Company for at least the next 10 years.

    All  of the Company's  baseload plants are  fueled by coal.  The Company has
maintained competitive electric rates when compared to neighboring utilities and
has a competitive electric baseload  generating production cost, which  includes
fuel  and plant operating  expenses, of less  than 1.5 CENTS  per kilowatt hour.
Lignite and  sub-bituminous  coal were  utilized  by  the Company  as  fuel  for
virtually  all  of  the electric  energy  generated during  1994.  The continued
delivery of lignite and sub-bituminous coal to the three large steam  generating
units  in which  the Company  is part owner  is reasonably  assured by contracts
covering various periods of the operating lives of these units.

GAS BUSINESS

    On a fully consolidated basis, 40% of the Company's 1994 operating  revenues
were  from the sale of  gas energy. During 1994, the  Company derived 56% of its
gas revenues from South Dakota and  44% from Nebraska. The Company's peak  daily
sendout was 128,700 MMBTU.

    For  the year ended December 1994, 44%  of the Company's gas sales were from
residential customers  and 56%  of  sales were  from commercial  and  industrial
sales.  During the last five years the Company has expanded its gas distribution
operations to serve 29 new communities in South Dakota.

    The Company  owns  and operates  natural  gas distribution  systems  serving
approximately  36,000 customers in eastern South  Dakota, for which it purchases
gas from various gas marketing firms under gas transportation service agreements
with various gas marketing firms. These agreements provide for firm  deliverable
pipeline  capacity of  approximately 49,300 MMBTU  per day in  South Dakota. The
Company has  service  agreements  with  Northern  Natural  Gas  Company  ("NNG")
providing  for  firm transportation  of natural  gas.  While NNG  has eliminated
nearly all of  its gas supply  activities, the Company  has supply contracts  in
place and peak shaving capacity to meet its peak day system needs.

    In  Nebraska, the Company owns and operates natural gas distribution systems
serving approximately 39,000  retail customers in  the village of  Alda and  the
cities  of  Grand  Island,  Kearney, and  North  Platte,  Nebraska.  The Company
purchases much of its natural gas for these systems from KN Gas Supply Co. under
a seven-year service agreement entered into in 1993. The Company also  purchases
certain  quantities of gas for its Nebraska customers from various gas marketing
firms. These  agreements  provide  for firm  deliverable  pipeline  capacity  of
approximately 49,600 MMBTU per day in Nebraska.

   
    To  supplement firm gas supplies, the  Company has contracts for underground
natural  gas  storage  services  to  meet  the  heating  season  and  peak   day
requirements  of its gas  customers. In addition, the  Company owns and operates
six propane-air plants with a total rated  capacity of 18,000 MMBTU per day,  or
approximately  14% of peak  day requirements. The  propane-air plants provide an
economic alternative  to pipeline  transportation charges  to meet  the  extreme
peaks caused by customer demand on extremely cold days.
    

    A  few  of the  Company's industrial  customers  purchase their  natural gas
requirements directly from gas marketing  firms for transportation and  delivery
through  the Company's distribution  system. The transportation  rates have been
designed to make the Company economically indifferent as to whether the  Company
sells and transports gas or only transports gas.

                                       3
<PAGE>
COMPETITION

    Although  the Company's electric service  territory is assigned according to
the South Dakota Public Utilities Act, and the Company has the right to  provide
electric  service  to  present and  future  electric customers  in  its assigned
service area for so long as the service provided is deemed adequate, the  energy
industry  in general has become  increasingly competitive. Electric service also
competes with other forms of energy and the degree of competition may vary  from
time to time depending on relative costs and supplies of other forms of energy.

    The  National  Energy Policy  Act  of 1992  was  designed to  promote energy
efficiency and increased competition in the electric wholesale markets. Such Act
also allows the Federal Energy Regulatory Commission ("FERC") to order wholesale
wheeling by public utilities to provide utility and nonutility generators access
to public utility transmission facilitates. The FERC is currently  investigating
a  restructuring of  the electric  utility industry.  Many states  are currently
considering retail wheeling, which aims to provide all customers with the  right
to  choose their  electricity supplier.  No regulatory  proposals have  yet been
formally introduced in South Dakota.

    FERC Order 636  requires, among  other provisions, that  all companies  with
natural  gas pipelines separate  natural gas supply  or production services from
transportation service  and storage  businesses.  This allows  gas  distribution
companies,  such  as  the  Company, and  individual  customers  to  purchase gas
directly from producers, third parties,  and various gas marketing entities  and
transport  it through  the suppliers'  pipelines. While  Order 636  had positive
aspects by providing for  more diversified supply and  storage options, it  also
required   the   Company   to  assume   responsibility   for   the  procurement,
transportation, and storage of natural gas. The alternatives now available under
Order 636 create additional pressure on  all distribution companies to keep  gas
supply and transportation pricing competitive, particularly for large customers.

WEATHER

    Weather  fluctuations  in  the  Company's  service  area  have  the greatest
influence on the Company's revenues from year to year. Typically gas sales  peak
when  colder winter weather patterns create increased winter heating needs while
sales decline during warmer  winter periods. Electric  sales peak during  warmer
summer  periods  due to  increased air  conditioning  sales while  cooler summer
weather patterns produce less sales of electric energy.

REGULATION

    The Company is a  "public utility" within the  meaning of the Federal  Power
Act  and the South Dakota  Public Utilities Act and, as  such, is subject to the
jurisdiction of, and regulation by, FERC with respect to issuance of securities,
the South Dakota Public  Utilities Commission ("PUC")  with respect to  electric
service  territories, and both FERC and the  PUC with respect to rates, service,
accounting records,  and  in  other  respects. The  State  of  Nebraska  has  no
centralized   regulatory  agency  which  has  jurisdiction  over  the  Company's
operations in that state; however, the  Company's natural gas rates are  subject
to regulation by the municipalities in which it operates.

    Under  the South Dakota  Public Utilities Act, enacted  in 1975, a requested
rate increase may be implemented  by the Company 30 days  after the date of  its
filing  unless its effectiveness is suspended by the PUC and, in such event, can
be implemented subject  to refund  with interest six  months after  the date  of
filing,  unless  sooner  authorized  by the  PUC.  The  Company's  electric rate
schedules provide that it may pass  along to all classes of customers  qualified
increases  or decreases in the cost of  fuel used in its generating stations and
in the cost  of fuel  included in purchased  power. A  purchased gas  adjustment
provision  in its gas  rate schedules permits  the company to  pass along to gas
customers increases or decreases in the cost of purchased gas.

    The Company's last electric rate increase  amounted to less than 1% in  May,
1985.  On May 26, 1994,  the Company filed for a  $2.4 million increase in South
Dakota natural gas revenues. As a result of a negotiated settlement with the PUC
on  November  15,  1994,  the  Company  implemented  rates  which  will  produce
additional annual natural gas revenues of $2.1 million, assuming normal weather,
representing an overall

                                       4
<PAGE>
   
increase  of 6.2%. On  December 30, 1994,  the Company filed  for a $2.7 million
increase in rates applicable to its Nebraska natural gas service area. Following
a  negotiated  settlement,  an  annual  increase  of  $2.275  million  has  been
implemented, effective July 1, 1995, an overall increase of 8.7%.
    

CAPITAL SPENDING AND FINANCING

    The  Company's  primary  capital  requirements include  the  funding  of its
utility construction and expansion programs,  the funding of debt and  preferred
stock  retirements  and  sinking  fund  requirements,  and  the  funding  of its
corporate development and investment activities.

    Expenditures for regulated utility  construction activities for 1994,  1993,
and  1992 were  $22.7 million,  $20.0 million,  and $18.5  million. Construction
expenditures during the last  three years included  expenditures related to  the
installation  of an additional 43 mw  of internal electric peaking capacity, the
expansion of the Company's natural gas system into 29 additional communities  in
eastern  South Dakota,  and to construction  of an operations  center which will
provide future cost savings and operating efficiencies through consolidation  of
activities.  Construction  expenditures  for  the  Company's  regulated  utility
businesses are estimated  to be  $19.3 million in  1995. The  majority of  these
projected  expenditures will  be spent on  enhancements of the  electric and gas
distribution  systems  and  completion  of  the  operations  center.   Estimated
construction expenditures for the Company's regulated utility businesses for the
years 1995 through 1999 are expected to be approximately $69 million.

    Capital  requirements for the mandatory retirement of long-term debt and the
mandatory preferred stock  sinking fund redemption  totaled $600,000,  $180,000,
and $513,000, for the years ended 1994, 1993, and 1992. It is expected that such
mandatory  retirements will be $600,000 in 1995, $1,080,000 in 1996, $570,000 in
1997, $20.6 million in 1998, and $13.5 million in 1999.

NONUTILITY OPERATIONS

   
    NORTHWESTERN GROWTH CORPORATION ("NGC"). NGC was incorporated under the laws
of South  Dakota  in  1994  to pursue  and  manage  nonutility  investments  and
development  activities. Although the primary  focus of NGC's investment program
will be to seek growth opportunities in the energy, energy equipment, and energy
services industries, NGC is also pursuing opportunities in existing and emerging
growth entities  in  nonenergy industries  that  meet return  and  capital  gain
requirements.  Along  with a  portfolio of  marketable securities,  NGC's assets
include the  investments of  three  subsidiaries: Northwestern  Networks,  Inc.,
Northwestern Systems, Inc., and SYN Inc.
    

    NORTHWESTERN NETWORKS, INC. ("NNI"). NNI was incorporated in South Dakota in
1986. NNI holds a common stock investment in LodgeNet Entertainment Corporation,
a  provider of  television entertainment and  information systems  to hotels and
motels.

    NORTHWESTERN SYSTEMS, INC. ("NSI"). NSI was incorporated in South Dakota  in
1986.  NSI owns all  of the common stock  ownership in Lucht,  Inc., a firm that
develops, manufactures, and markets multi-image photographic printers and  other
related equipment.

    SYN INC. ("SYN"). SYN, a Delaware corporation, was formed for the purpose of
acquiring  Synergy Group Incorporated, a major propane distributor. See "Pending
Acquisition of Synergy Group Incorporated."

    GRANT, INC.  Grant, Inc.,  which holds  title to  property not  used in  the
Company's utility business, was incorporated in South Dakota in 1972.

               PENDING ACQUISITION OF SYNERGY GROUP INCORPORATED

GENERAL

    On  May  17, 1995,  SYN  entered into  a  Purchase and  Sale  Agreement (the
"Acquisition Agreement") with Synergy Group Incorporated, a Delaware corporation
("Synergy"), S &  J Investments and  the stockholders of  Synergy (the  "Synergy
Stockholders"),  providing  for  the  acquisition  by  SYN  of  Synergy  and its

                                       5
<PAGE>
subsidiaries and of certain operating  equipment which Synergy has been  leasing
from   S  &  J  Investments  (the  "Acquisition").  NGC,  the  immediate  parent
corporation of  SYN, joined  in  the Acquisition  Agreement to  guarantee  SYN's
performance thereof.

   
    Under  the terms of the Acquisition Agreement, the Acquisition is subject to
various  conditions   and  approvals,   including   the  accuracy   of   various
representations  and warranties made by the  sellers as to the business, assets,
financial condition and results of  operations of Synergy and its  subsidiaries,
the  obtaining of financing needed  by SYN for the  Acquisition, the issuance of
orders by the FERC authorizing the Company's issuance of the securities  offered
under  this Prospectus, the  net proceeds from  which are to  be used to provide
such  financing  for  SYN  (see  "Use  of  Proceeds"),  and  the  expiration  or
termination   of   the   waiting   period   for   the   Acquisition   under  the
Hart-Scott-Rodino Antitrust Improvements Act of 1976. On June 19, 1995 the  FERC
issued  the  required  orders and  on  July  6, 1995  early  termination  of the
Hart-Scott-Rodino waiting period was granted.
    

   
    The Acquisition will be  an expansion of  the Company's energy  distribution
business,  which  currently  is  primarily regulated  electric  and  gas utility
distribution. See "The Company". Two  of the Company's corporate objectives  are
intended  to be accomplished through the Acquisition. The immediate objective is
to expand the Company's energy distribution business. The second objective is to
use the business acquired from Synergy as a base for additional acquisitions  in
the  propane distribution industry which, unlike  the Company's electric and gas
public utility business, is not regulated  as to rates or territory served.  The
Company is currently considering the acquisition of a small propane distributor.
The  propane  distribution industry  currently  consists of  approximately 8,000
retail propane  marketing  companies  in the  continental  United  States,  with
propane  being the  fourth largest  source of energy  marketed at  retail in the
United States, following electricity, natural gas and fuel oil.
    

    As a result of  the factors affecting Synergy's  business, see "Business  of
Synergy", the Company expects that its consolidated revenues and earnings may be
subject to increased variability following consummation of the Acquisition.

BUSINESS OF SYNERGY

   
    Synergy,  headquartered in Farmingdale, New  York, is a multi-state marketer
principally engaged in the  retail distribution of propane  and other fuels  for
residential,  commercial,  industrial,  agricultural and  other  uses. Synergy's
propane sales during the past  three fiscal years represented approximately  83%
of its annual revenues, of which the major portion (approximately 50% of propane
sales in the fiscal year ending March 31, 1995) resulted from sales to customers
who  utilize propane for residential purposes, primarily for home heating, water
heating and cooking. The balance of propane sales are primarily for  commercial,
industrial  and agricultural use.  Synergy also sells propane  for use as engine
fuel for forklifts and over-the-road  vehicles. Synergy currently maintains  152
retail  branches  which service  approximately 200,000  customers in  23 states,
primarily in rural and suburban areas of the Northeast, Mid-Atlantic,  Southeast
and  Southcentral regions of the United  States. According to available industry
data, Synergy  is,  based upon  volume  sold, one  of  the nation's  10  largest
retailers of propane.
    

    Synergy  also sells gasoline,  diesel and aviation  fuel, and appliances and
equipment which use propane, and is engaged  in the sale, repair and leasing  of
forklift trucks.

   
    Synergy  purchases  propane from  major domestic  oil  companies as  well as
independent oil and liquid gas producers.  These producers ship the propane  via
pipeline to immediate supply terminals at which Synergy's large transport trucks
take  delivery and transport the propane  to bulk storage tanks. Synergy's fleet
of approximately 500 tank  trucks delivers the propane  from these bulk  storage
facilities  to approximately 193,000 propane storage tanks or cylinders which it
leases to its customers and which are located at customer premises. These  tanks
are  used exclusively to hold propane  purchased from Synergy, thereby promoting
the stability of Synergy's  customer base. While the  cost and inconvenience  of
switching  tanks tends to minimize switching by customers among suppliers on the
basis of minimal price variations, it also makes it more difficult to obtain new
customers, other than through  acquisitions, in areas  where there are  existing
relationships between potential customers and other distributors.
    

                                       6
<PAGE>
    The  retail propane  industry is mature,  with only limited  growth in total
demand for the  product foreseen.  The Company  expects the  overall demand  for
propane  to  remain  relatively  constant  over  the  next  several  years, with
year-to-year industry  volumes being  impacted  primarily by  weather  patterns.
Therefore,  Synergy's ability to  grow within the industry  will be dependent on
its ability to acquire other retail distributors, on the success of opening  new
district  locations and on the  success of its marketing  efforts to acquire new
customers.

    Synergy competes with other distributors of propane, including several major
companies and several thousand small independent operators. Synergy's ability to
compete  effectively   depends  on   the  reliability   of  its   service,   its
responsiveness  to  customers and  its  ability to  maintain  competitive retail
prices.

   
    Synergy competes for  customers against suppliers  of electricity, fuel  oil
and  natural gas. In the last two decades,  many new homes were built, and older
homes converted to use electrical heating systems and appliances. Electricity is
a major  competitor  of propane,  but  propane generally  enjoys  a  substantial
competitive price advantage over electricity. The Company believes that fuel oil
does  not present a significant competitive  threat in Synergy's primary service
areas because:  (i)  propane is  a  residue-free, cleaner  energy  source,  (ii)
environmental concerns make fuel oil relatively unattractive, and (iii) fuel oil
appliances  generally are not  as efficient as  propane appliances. Furnaces and
appliances that  burn propane  will not  operate on  fuel oil,  and therefore  a
conversion  from  one  fuel  to  the  other  requires  the  installation  of new
equipment. Synergy's customers will have an incentive to switch to fuel oil only
if fuel oil becomes significantly less expensive than propane. Synergy generally
does not attempt  to sell propane  in areas served  by natural gas  distribution
systems,  except sales for specialized industrial applications because the price
per equivalent energy unit of propane is, and has historically been, higher than
that of natural  gas. To use  natural gas,  however, a retail  customer must  be
connected  to a distribution system provided by  a local utility. Natural gas is
not expected by management of the Company to create significant competition  for
Synergy  in  areas that  are not  currently served  by natural  gas distribution
systems because of the costs involved in building or connecting to a natural gas
distribution system.
    

   
    The propane  gas distribution  business is  affected by  economic and  other
factors,  some of which are  beyond the control of  the Synergy, such as weather
conditions. Synergy's business is highly seasonal, with a substantial portion of
its revenues  customarily being  generated during  the six  month winter  period
ending  in March.  Synergy's business was  adversely affected  by unusually warm
winter conditions in fiscal 1995. Warm  winter conditions in the future  periods
may  adversely affect Synergy's revenues, operating income and cash flow in such
years.
    

   
    The retail  propane business  is a  "margin-based" business  in which  gross
profits are dependent upon the excess of the sales price over the propane supply
costs.  Propane  is a  commodity, and,  as such,  its unit  price is  subject to
changes  in  response  to  changes   in  supply  or  other  market   conditions.
Consequently,  the unit price of propane purchased  by Synergy, as well as other
marketers, can change rapidly  over a short period.  In general, product  supply
contracts  permit suppliers to charge  posted prices at the  time of delivery or
the current prices established  at major storage points.  If rapid increases  in
the  wholesale  cost  of  propane  cannot be  immediately  passed  on  to retail
customers, such  increases may  reduce margins  on retail  sales.  Consequently,
Synergy's  profitability  will  be  sensitive to  changes  in  wholesale propane
prices.
    

   
    According to public reports  filed by Synergy  with the Commission,  Synergy
incurred  substantial net  losses in each  of its  last five fiscal  years. As a
result of such net losses, Synergy has been in default under certain of its debt
covenants and the  audit report  prepared by  Synergy's independent  accountants
relating  to Synergy's financial statements for  the last two fiscal years noted
that Synergy's  recurring losses  from operations,  net capital  deficiency  and
default  on  certain of  its debt  "raise substantial  doubt about  the entity's
ability to  continue as  a going  concern." Although  Synergy has  recorded  net
losses  during each of the  last five years, its  operating income for the years
ended March  31, 1995  and  1994 was  approximately $6,492,000  and  $4,090,000,
respectively.  See "Management  of Synergy" for  a description  of the Company's
financing  plans  and  anticipated  operating  efficiencies  which  the  Company
believes  will substantially  improve Synergy's results  of operations following
the Acquisition.
    

                                       7
<PAGE>
ACQUISITION CONSIDERATION

   
    The consideration to  be paid  by SYN for  the Acquisition,  in addition  to
assuming  various liabilities of  Synergy and its  subsidiaries, consists of (i)
cash in the amount of $137,500,000,  which amount will be subject to  adjustment
upward  or  downward according  to whether  the working  capital of  Synergy (as
specifically defined  in the  Acquisition  Agreement) exceeds  or is  less  than
$21,042,000  at the time of  closing of the Acquisition,  (ii) a promissory note
payable by SYN in the principal amount of $1,250,000, and (iii) the issuance  to
the  Synergy Stockholders of 17,500 shares of  the Common Stock of SYN (17.5% of
the total  that will  be  outstanding) and  2,500 shares  of  the 15%  Series  A
Cumulative  Preferred  Stock  of  SYN (valued  at  $2,500,000),  such  shares of
preferred stock being part of a series  of preferred stock of SYN for which  the
remaining 50,000 shares are expected to be issued to the Company in exchange for
a  $50,000,000 portion of  the long-term financing which  the Company expects to
provide to SYN. Substantially all of Synergy's loan indebtedness ($88.2 million)
will be paid from the cash portion of the consideration for the Acquisition.
    

MANAGEMENT OF SYNERGY

    The Acquisition  will be  made in  association with  Empire Gas  Corporation
("Empire  Gas"), a large propane  distribution company headquartered in Lebanon,
Missouri, which has a management experienced in the retail propane  distribution
business.  NGC and SYN have entered into a management agreement (the "Management
Agreement") with Empire Gas,  pursuant to which Empire  Gas has been engaged  to
perform the planning and management of the assets and business operations of SYN
and its subsidiaries, subject to the direction of the Board of Directors of SYN,
following the Acquisition (the "Management Services").

   
    It  is planned that,  immediately upon the  consummation of the Acquisition,
substantial changes will be made in the management and operation of the acquired
business in order  to achieve improvement  in the results  of operations of  the
business. NGC and Empire Gas will implement significant cost efficiency measures
to  reduce Synergy's operating, selling and general and administrative expenses.
These measures include the elimination of employee positions, corporate overhead
and  field  location  operating   expenses.  The  Synergy  headquarters   office
operations  will  be  consolidated  with the  Empire  Gas  corporate  offices in
Lebanon, Missouri, resulting in substantial expense savings. Another significant
portion  of  the  expense  reductions  is  represented  by  the  elimination  of
compensation   and  vehicle  lease  expenses  previously  paid  to  the  Synergy
Stockholders. In  addition  to operating  cost  reductions, the  Company's  post
acquisition  financing and capitalization  plan for Synergy  will reduce overall
financing expenses and provide capital for  growth that was not available  prior
to  the acquisition. See "Northwestern Public  Service Company and Synergy Group
Incorporated Pro Forma Financial Information."
    

   
    As compensation for the Management Services, SYN will pay Empire Gas a Fixed
Fee and  a Management  Fee.  The Fixed  Fee is  intended  to cover  Empire  Gas'
operating  overhead in performing the Management  Services and initially will be
$3,250,000 per annum, subject to adjustment annually based upon increases in the
Consumer Price Index. The  Management Fee will  be at the  rate of $500,000  per
annum  plus 10%  of the  amount by  which the  earnings before  interest, taxes,
depreciation and amortization  of SYN  and its subsidiaries,  on a  consolidated
basis, exceed certain threshold amounts.
    

    At  the time of the Acquisition, Empire  Gas will purchase 10% of the common
stock of SYN for $10,000 and will have an ongoing option to purchase from NGC an
additional 20% of the common stock of SYN for $20,000. However, according to the
formula stated in another agreement among SYN,  Empire Gas and NGC, NGC will  be
allowed  to reacquire from Empire Gas up to 7,500 shares of such common stock of
SYN, without payment, if Empire Gas fails to achieve certain cumulative  results
from  the management of SYN and  its subsidiaries while the Management Agreement
remains in effect.

   
    The term of the Management Agreement extends to June 30, 2000 and  continues
year  to year  thereafter unless  terminated earlier by  SYN or  Empire Gas. The
Management Agreement may be terminated by  either party prior to the  expiration
of  the  term on  any one  of several  grounds specified  in the  Agreement. The
Management Agreement includes  a right of  termination by SYN  if its  operating
results do not exceed prescribed thresholds which increase annually as specified
therein. In the event the Company receives notice
    

                                       8
<PAGE>
   
that  the Management  Agreement will  be terminated by  Empire Gas,  SYN has the
right to the use of the personnel and  facilities of Empire Gas for a period  of
up  to  18 months  following  such notice  by  Empire Gas,  while  developing an
alternative for Empire Gas' services.
    

   
THIRD PARTY SALE
    

   
    NGC and SYN have entered into a purchase agreement with an unrelated  party,
granting  that party the right to purchase  certain of the retail branches to be
acquired by SYN from Synergy (the "Third Party Sale"). The third party  purchase
must  occur immediately  after the closing  of the Acquisition  and the purchase
price is payable in cash and will be  based on the price paid by SYN to  Synergy
for  such outlets. Such cash price is estimated to be approximately $40 million,
which would decrease  SYN's cash  payment for the  Acquisition to  approximately
$100  million,  which  reduction  would  be  applied  to  reduce  the  long-term
investment in securities to be issued by SYN to NGC or the Company and the  loan
to be made by NGC to SYN.
    

CAPITALIZATION OF SYN

   
    The  capitalization of SYN, taking into account the financing intended to be
provided to SYN by the Company and NGC  from the net proceeds of certain of  the
securities being offered pursuant to this Prospectus (see "Use of Proceeds"), is
planned  to  be as  follows at  the  time of  the Acquisition  closing, assuming
consummation of the third party sale:
    

   
<TABLE>
<S>                                                                     <C>
Common Stock (100,000 shares outstanding):
  NGC (72,500 shares) (1).............................................  $     72,500
  Empire Gas (10,000 shares) (1)......................................        10,000
  Former Synergy Stockholders (17,500 shares) (2).....................        17,500
                                                                        $    100,000
15% Series A Cumulative Preferred Stock (52,500 shares outstanding):
  NGC (50,000 shares).................................................  $ 50,000,000
  Former Synergy Stockholders (2,500 shares) (2)......................     2,500,000
                                                                        $ 52,500,000
Long Term Debt:
  Secured Term Loan from NGC (3)......................................  $ 52,500,000
    Total Capitalization..............................................  $105,100,000
<FN>
- ------------------------

(1)  Empire Gas has an option to purchase 20,000 of the shares owned by NGC  for
     a price of $1 per share.

(2)  Issued to Former Synergy Stockholders as part of Acquisition consideration.

(3)  The  Company anticipates that SYN will  obtain a bank borrowing facility to
     fund SYN's working capital needs.
</TABLE>
    

                                       9
<PAGE>
                    NORTHWESTERN PUBLIC SERVICE COMPANY AND
                           SYNERGY GROUP INCORPORATED
                        PRO FORMA FINANCIAL INFORMATION
   
    Set forth  below  are summary  financial  data extracted  from  the  audited
consolidated  statement of operations of the Company for the year ended December
31, 1994, the unaudited consolidated financial  statements of the Company as  of
March  31, 1995, and for the three months then ended; the summary financial data
extracted from  the unaudited  statement of  operations of  Synergy for  the  12
months  ended December 31, 1994  and for the three  months ended March 31, 1995,
and balance sheet information as of March 31, 1995; and the pro forma  financial
information for the Company ("the Pro Forma Financial Information") for the year
ended  December 31, 1994, for  the three months ended March  31, 1995, and as of
March 31, 1995, based on such historical financial statements, to illustrate the
effects of the Acquisition. The Pro Forma Financial Information illustrates  the
effects  of the Acquisition as adjusted to  give effect to the Third Party Sale.
(See "Pending Acquisition of Synergy Group Incorporated.")
    
   
    The  Acquisition  will  be  accounted  for  using  the  purchase  method  of
accounting.  After the Acquisition, the total  purchase price of the Acquisition
will be allocated to  Synergy's tangible and  intangible assets and  liabilities
based  upon  their  respective  fair values.  The  allocation  of  the aggregate
purchase price included in the  Pro Forma Financial Information is  preliminary,
but  the  final allocation  of  the purchase  price  is not  expected  to differ
materially from the preliminary  allocation. The financing  plan to be  executed
for  the funding of  the Acquisition is expected  to be as  presented in the Pro
Forma Financial  Information.  Although  market conditions  may  impact  certain
financing options and assumptions as to interest and dividend rates, the overall
financing plan is not expected to vary materially from that presented.
    
   
    The  pro forma statements of operations for the year ended December 31, 1994
and for the three months ended March  31, 1995, give effect to the  Acquisition,
and the related transactions as if they had occurred on January 1, 1994. The pro
forma balance sheet as of March 31, 1995 has been prepared as if the transaction
had  occurred on that date. The pro forma financial information does not purport
to present the financial  position or results of  operations of the Company  had
the  Acquisition actually been completed as of the dates indicated. In addition,
the pro  forma financial  information is  not necessarily  indicative of  future
results  of operations  and should  be read  in conjunction  with the historical
consolidated financial  statements  of  the Company  incorporated  by  reference
herein.
    

                                       10
<PAGE>
   
                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
    

   
<TABLE>
<CAPTION>
                                                                           ESTIMATED
                                                                           EFFECTS OF
                                                                          PARTIAL SALE
                                                                          OF ASSETS TO
                                                  NPS        SYNERGY       UNRELATED                 PRO FORMA
                                               HISTORICAL   HISTORICAL   THIRD PARTY(A)   SUBTOTAL  ADJUSTMENT    PRO FORMA
                                               ----------   ----------   --------------   --------  -----------   ---------
<S>                                            <C>          <C>          <C>              <C>       <C>           <C>
Operating Revenue............................   $ 157,266    $ 128,182      $(28,814)     $256,634     --         $256,634
Cost of Product Sold.........................      80,457       62,242       (14,748)      127,951     --          127,951
                                               ----------   ----------   --------------   --------  -----------   ---------
Gross Profit.................................      76,809       65,940       (14,066)      128,683     --          128,683
                                               ----------   ----------   --------------   --------  -----------   ---------
Operating Costs and Expenses
  Operating and maintenance expenses.........      18,191       44,663       (10,046)       52,808    $(4,181)(B)   48,627
  General and administrative.................       9,707       14,239       --             23,946     (4,944)(B)   19,002
  Depreciation and amortization..............      12,439        4,983          (905)       16,517        448(C)    16,965
  Property and other taxes...................       6,104       --           --              6,104     --            6,104
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   46,441       63,885       (10,951)       99,375     (8,677)      90,698
                                               ----------   ----------   --------------   --------  -----------   ---------
Operating Income.............................      30,368        2,055        (3,115)       29,308      8,677       37,985
                                               ----------   ----------   --------------   --------  -----------   ---------
Other Income (Expense)
  Investment income and other................       2,611        1,185       --              3,796     --            3,796
  Interest expense...........................      (9,670)     (11,994)      --            (21,664)     7,504(D)   (14,160)
  Debt restructuring costs...................      --           (2,976)(G)     --           (2,976)    --           (2,976)
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   (7,059)     (13,785)      --            (20,844)     7,504      (13,340)
                                               ----------   ----------   --------------   --------  -----------   ---------
Income (Loss) Before Income Taxes............      23,309      (11,730)       (3,115)        8,464     16,181       24,645
Provision (Credit) for Income Taxes..........       7,869         (324)          (94)        7,451       (269)(E)    7,182
                                               ----------   ----------   --------------   --------  -----------   ---------
  Net Income.................................      15,440      (11,406)       (3,021)        1,013     16,450       17,463
Dividends on Preferred Stock.................        (120)      --           --               (120)    (2,043)(F)   (2,163)
                                               ----------   ----------   --------------   --------  -----------   ---------
  Net Income Available for Common............   $  15,320    $ (11,406)     $ (3,021)     $    893    $14,407     $ 15,300(G)
                                               ----------   ----------   --------------   --------  -----------   ---------
                                               ----------   ----------   --------------   --------  -----------   ---------
Net Income per Share.........................   $    2.00                                                         $   1.74(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Weighted Average Shares Outstanding..........       7,677                                                            8,805
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Selected Financial Ratios
  Interest coverage..........................        5.14(H)                                                          4.65
                                               ----------                                                         ---------
                                               ----------                                                         ---------
  Ratio of earnings to fixed charges.........        3.39(H)                                                          2.73(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
  Ratio of earnings to fixed charges,
   including preferred dividends.............        3.33(H)                                                          2.25(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
</TABLE>
    

                                       11
<PAGE>
   
                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                       THREE MONTHS ENDED MARCH 31, 1995
                (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
    

   
<TABLE>
<CAPTION>
                                                                           ESTIMATED
                                                                           EFFECTS OF
                                                                          PARTIAL SALE
                                                                          OF ASSETS TO
                                                  NPS        SYNERGY       UNRELATED                 PRO FORMA
                                               HISTORICAL   HISTORICAL   THIRD PARTY(A)   SUBTOTAL  ADJUSTMENT    PRO FORMA
                                               ----------   ----------   --------------   --------  -----------   ---------
<S>                                            <C>          <C>          <C>              <C>       <C>           <C>
Operating Revenue............................   $  50,754    $  42,816      ($10,958)     $ 82,612    $--         $ 82,612
Cost of Product Sold.........................      26,185       20,907        (6,001)       41,091     --           41,091
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   24,569       21,909        (4,957)       41,521     --           41,521
                                               ----------   ----------   --------------   --------  -----------   ---------
Operating Costs and Expenses
  Operating and maintenance expenses.........       4,210       11,889        (2,819)       13,280        197(B)    13,477
  General and administrative.................       2,594         (159)(G)     --            2,435       (690)(B)    1,745
  Depreciation and amortization..............       3,210        1,476          (220)        4,466         72(C)     4,538
  Property and other taxes...................       1,673       --           --              1,673     --            1,673
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   11,687       13,206        (3,039)       21,854       (421)      21,433
                                               ----------   ----------   --------------   --------  -----------   ---------
Operating Income.............................      12,882        8,703        (1,918)       19,667        421       20,088
                                               ----------   ----------   --------------   --------  -----------   ---------
Other Income (Expense)
  Investment income and other................         565          172       --                737     --              737
  Interest expense...........................      (2,590)      (2,390)      --             (4,980)     1,267(D)    (3,713)
  Debt restructuring costs...................      --              (24)      --                (24)    --              (24)
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   (2,025)      (2,242)      --             (4,267)     1,267       (3,000)
                                               ----------   ----------   --------------   --------  -----------   ---------
Income (Loss) Before Income Taxes............      10,857        6,461        (1,918)       15,400      1,688       17,088
Provision (Credit) for Income Taxes..........       3,754         (224)      --              3,530       (282)(E)    3,248
                                               ----------   ----------   --------------   --------  -----------   ---------
Net Income...................................       7,103        6,685        (1,918)       11,870      1,970       13,840
Dividends on Preferred Stock.................         (30)      --           --                (30)      (511)(F)     (541)
                                               ----------   ----------   --------------   --------  -----------   ---------
Net Income Available for Common..............   $   7,073    $   6,685      ($ 1,918)     $ 11,840    $ 1,459     $ 13,299(G)
                                               ----------   ----------   --------------   --------  -----------   ---------
                                               ----------   ----------   --------------   --------  -----------   ---------
Net Income per Share.........................   $    0.92                                                         $   1.51(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Weighted Average Shares Outstanding..........       7,677                                                            8,805
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Selected Financial Ratios
  Interest coverage..........................        7.53(H)                                                          6.68
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Ratio of earnings to fixed charges...........        5.09(H)                                                          5.52(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
Ratio of earnings to fixed charges, including
 preferred dividends.........................        5.00(H)                                                          4.69(G)
                                               ----------                                                         ---------
                                               ----------                                                         ---------
<FN>
- ------------------------
Note:   The results of  operations for Synergy for  the three months ended March
       31, 1995 are not indicative of a full year's results of operations.
</TABLE>
    

                                       12
<PAGE>
                       UNAUDITED PRO FORMA BALANCE SHEET
                                 MARCH 31, 1995
                             (DOLLARS IN THOUSANDS)

   
<TABLE>
<CAPTION>
                                                                         ESTIMATED SALE
                                                                           OF CERTAIN
                                                                           ASSETS TO
                                                  NPS        SYNERGY       UNRELATED                 PRO FORMA
                                               HISTORICAL   HISTORICAL   THIRD PARTY(I)   SUBTOTAL  ADJUSTMENT    PRO FORMA
                                               ----------   ----------   --------------   --------  -----------   ---------
<S>                                            <C>          <C>          <C>              <C>       <C>           <C>
Current Assets
  Cash.......................................   $   3,338    $   4,117      $ 40,000      $ 47,455   ($40,000)(J) $  7,455
  Trade receivables..........................      13,890       16,677        (4,598)       25,969       (990)(K)   24,979
  Inventories................................      13,332       10,607        (2,393)       21,546     (1,500)(K)   20,046
  Prepaid expenses...........................      --            1,137       --              1,137     --            1,137
  Other......................................       5,765       --           --              5,765     --            5,765
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   36,325       32,538        33,009       101,872    (42,490)      59,382
                                               ----------   ----------   --------------   --------  -----------   ---------
Property and Equipment
  At cost, net of accumulated depreciation...     252,806       70,045       (13,685)      309,166      7,140(K)   316,306
                                               ----------   ----------   --------------   --------  -----------   ---------
Other Assets (net)
  Goodwill and other intangibles.............      --            2,348       (19,324)      (16,976)    54,422(K)    37,446
  Other......................................      74,301        1,014       --             75,315     (1,014)(K)   74,301
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   74,301        3,362       (19,324)       58,339     53,408      111,747
                                               ----------   ----------   --------------   --------  -----------   ---------
  Total Assets...............................   $ 363,432    $ 105,945      $--           $469,377   $ 18,058     $487,435
                                               ----------   ----------   --------------   --------  -----------   ---------
                                               ----------   ----------   --------------   --------  -----------   ---------
Current Liabilities
  Commercial paper...........................   $   6,000    $  --          $--           $  6,000   $ --         $  6,000
  Current maturities of long-term debt.......         570       88,387       --             88,957    (88,387)(L)      570
  Accounts payable and accrued expenses......      29,699       10,540       --             40,239      5,455(K)    45,694
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   36,269       98,927       --            135,196    (82,932)      52,264
                                               ----------   ----------   --------------   --------  -----------   ---------
Other Liabilities
  Deferred income taxes......................      37,742        2,093       --             39,835     (1,720)(L)   38,115
  Unamortized investment tax credits.........      10,444       --           --             10,444     --           10,444
  Deferred interest payable..................      --            1,030       --              1,030     (1,030)(L)    --
  Other......................................      27,862          935       --             28,797     --           28,797
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                   76,048        4,058       --             80,106     (2,750)      77,356
                                               ----------   ----------   --------------   --------  -----------   ---------
Long Term Debt...............................     129,318        4,330       --            133,648     47,374(M)   181,022
                                               ----------   ----------   --------------   --------  -----------   ---------
Company-Obligated Mandatorily Redeemable
 Preferred Securities of Subsidiary Trust....      --           --           --              --        24,212(N)    24,212
                                               ----------   ----------   --------------   --------  -----------   ---------
Cumulative Preferred Stock...................       2,640       41,700       --             44,340    (41,700)(Q)    2,640
                                               ----------   ----------   --------------   --------  -----------   ---------
Common Stock Equity (Deficit)
  Common stock...............................      26,870           41       --             26,911      4,268(O)    31,179
Additional paid-in capital...................      29,923        5,284       --             35,207     21,191(P)    56,398
  Retained earnings..........................      59,183      (48,395)      --             10,788     48,395(Q)    59,183
  Unrealized gain on investments, net........       3,181       --           --              3,181     --            3,181
                                               ----------   ----------   --------------   --------  -----------   ---------
                                                  119,157      (43,070)      --             76,087     73,854      149,941
                                               ----------   ----------   --------------   --------  -----------   ---------
  Total Liabilities & Stockholders Equity....   $ 363,432    $ 105,945       --           $469,377   $ 18,058     $487,435
                                               ----------   ----------   --------------   --------  -----------   ---------
                                               ----------   ----------   --------------   --------  -----------   ---------
</TABLE>
    

                                       13
<PAGE>
                    NOTES TO PRO FORMA FINANCIAL INFORMATION

   
A) Represents all relevant statement of operations effects, net of income taxes,
    generated by the expected sale of certain Synergy properties to an unrelated
    third party. Although a  purchase agreement to  sell certain properties  has
    been   executed  and  it  is  anticipated  that  such  transaction  will  be
    consummated, in the event the Third Party Sale is not closed, pro forma  net
    income available for common would have been $15,343,000 and $14,040,000; and
    pro  forma net income per  common share would have  been $1.73 and $1.58 for
    the year ended December 31,  1994 and for the  three months ended March  31,
    1995,  respectively. The  following represents  the estimated  impact on pro
    forma net income  available for  common as presented  if the  sale does  not
    occur (in thousands):
    

   
<TABLE>
<CAPTION>
                                                                                     YEAR        THREE
                                                                                     ENDED      MONTHS
                                                                                   12/31/94      ENDED
                                                                                   ---------    3/31/95
                                                                                   INCREASE   -----------
                                                                                              (DECREASE)
<S>                                                                                <C>        <C>
Pro forma net income available for common as presented...........................  $  15,300   $  13,299
                                                                                   ---------  -----------
        1)  Operating income retained............................................      3,115       1,918
        2)  Additional reductions in operating costs and expenses................        610         153
        3)  Increased general and administrative charge..........................       (750)       (188)
        4)  Increased interest expense...........................................     (1,934)       (483)
        5)  Increased income tax expense.........................................       (180)       (455)
        6)  Increased dividends on preferred stock...............................       (818)       (204)
                                                                                   ---------  -----------
              Subtotal...........................................................         43         741
                                                                                   ---------  -----------
Pro forma net income available for common without sale to third party............  $  15,343   $  14,040
                                                                                   ---------  -----------
                                                                                   ---------  -----------
</TABLE>
    

    The following represents the estimated impact on the pro forma balance sheet
    at March 31, 1995 as presented if the sale does not occur (in thousands):

   
<TABLE>
<CAPTION>
                                                                                    3/31/95
                                                                                  -----------
                                                                                   INCREASE
                                                                                  (DECREASE)
<S>                                                                               <C>
        1)  Trade receivables...................................................   $   4,598
        2)  Inventories.........................................................       2,393
        3)  Property and equipment, net.........................................      13,685
        4)  Goodwill............................................................      19,324
                                                                                  -----------
              Total Assets......................................................   $  40,000
                                                                                  -----------
                                                                                  -----------
        1)  Long-term debt......................................................      28,000
        2)  Common stock........................................................       2,000
        3)  Preferred stock.....................................................      10,000
                                                                                  -----------
              Total Liabilities & Equity........................................   $  40,000
                                                                                  -----------
                                                                                  -----------
</TABLE>
    

                                       14
<PAGE>
                    NOTES TO PRO FORMA FINANCIAL INFORMATION

   
B)  Represents  the following  breakdown of  reductions  in operating  costs and
    expenses principally related to employee positions, corporate administrative
    expenses  and  certain  other  specifically  identified  cost  savings   (in
    thousands):
    

   
<TABLE>
<CAPTION>
                                                                                  YEAR ENDED      THREE
                                                                                   12/31/94      MONTHS
                                                                                  -----------     ENDED
                                                                                                 3/31/95
                                                                                   INCREASE    -----------
                                                                                               (DECREASE)

<S>                                                                               <C>          <C>
Operating expenses --

1)  Employee related expenses...................................................   $  (1,834)   $    (458)
2)  Vehicle lease expenses......................................................      (2,047)         730
3)  Store consolidations........................................................        (300)         (75)
                                                                                  -----------  -----------
      Total.....................................................................   $  (4,181)   $     197
                                                                                  -----------  -----------
                                                                                  -----------  -----------
General and administrative expenses --

1)  Employee related expenses...................................................   $  (7,863)   $  (1,431)
2)  Occupancy costs.............................................................        (643)        (151)
3)  Bank account charges........................................................        (188)         (45)
4)  Empire Gas general and administrative charge................................       3,250          812
5)  Empire Gas management fee...................................................         500          125
                                                                                  -----------  -----------
      Total.....................................................................   $  (4,944)   $    (690)
                                                                                  -----------  -----------
                                                                                  -----------  -----------
</TABLE>
    

    All  general and  administrative functions  previously performed  at Synergy
    headquarters would  be undertaken  by Empire  Gas, Inc.  under a  management
    agreement  governing the operation of  the Synergy properties. (See "Pending
    Acquisition  of  Synergy  Group  Incorporated.")  Under  the  terms  of  the
    management  agreement, Empire Gas will be  compensated through a general and
    administrative charge and a management fee arrangement.

   
    The vehicle lease expenses are  primarily attributable to property owned  by
    affiliates of existing Synergy shareholders. Such property will be purchased
    as  a part of the acquisition transaction. The increase in lease expense for
    the three  months  ended March  31,  1995 reflects  the  net effect  of  the
    elimination  of such lease expense  and a reversal of  the credit to expense
    created by  a $1,328,000  forgiveness by  these same  affiliates of  accrued
    rental  obligations. In addition, general and administrative expense savings
    include shareholder compensation.
    

C) Represents  additional  depreciation and  amortization  of fixed  assets  and
    intangibles  related to  the adjustment  of assets  to fair  market value in
    accordance with the purchase method of accounting.

D) Represents  interest  expense  savings  associated  with  the  retirement  of
    Synergy's  debt as  a result of  the Acquisition net  of additional interest
    expense related to NPS issuing new debt securities.

                                       15
<PAGE>
                    NOTES TO PRO FORMA FINANCIAL INFORMATION

    The following  table presents  a reconciliation  of the  pro forma  interest
    expense  to the historical interest expense  for the year ended December 31,
    1994, and the three months ended March 31, 1995 (in thousands):

   
<TABLE>
<CAPTION>
                                                                                                            THREE
                                                                                                           MONTHS
                                                                                              YEAR ENDED    ENDED
                                                                                               12/31/94    3/31/95
                                                                                              ----------  ---------
<S>                                                                                           <C>         <C>
Historical interest expense --
  NPS.......................................................................................  $    9,670  $   2,590
  Synergy...................................................................................      11,994      2,390
                                                                                              ----------  ---------
                                                                                                  21,664      4,980
                                                                                              ----------  ---------
Add:  Interest on short-term bridge financing at an assumed rate of 7.5%....................         649        162
      Interest on new debt securities issued for permanent financing at an assumed rate of
      7.5%..................................................................................       3,639        910
      Less:  Interest on retired long-term debt of Synergy..................................     (11,792)    (2,339)
                                                                                              ----------  ---------
Pro forma adjustment........................................................................      (7,504)    (1,267)
                                                                                              ----------  ---------
Pro forma interest expense..................................................................  $   14,160  $   3,713
                                                                                              ----------  ---------
                                                                                              ----------  ---------
</TABLE>
    

E) Represents income tax effect of  all pro forma adjustments. Such  adjustments
    assume Synergy will be a separate income tax filing and reporting entity.

F)  Represents preferred stock dividend requirements  related to the issuance of
    new securities as part of the permanent financing. This dividend requirement
    is based on an 8.5% pretax rate.

   
G) The net income  of Synergy for  the year ended December  31, 1994 includes  a
    nonrecurring  charge of $2,976,000 for debt  restructing costs. Had the debt
    restructuring not occurred, pro forma net income available for common  would
    have been $18,276,000; pro forma net income per common share would have been
    $2.08;  ratio of earnings to fixed charges  would have been 2.94x; and ratio
    of fixed charges, including  preferred dividends would  have been 2.42x  for
    the year ended December 31, 1994.
    

   
    The net income of Synergy for the three months ended March 31, 1995 includes
    a  nonrecurring credit to  general and administrative  expense of $4,326,000
    for the reversal of previously accrued shareholders' compensation. Had  this
    compensation  adjustment not been  made, pro forma  net income available for
    common would have  been $8,973,000; pro  forma net income  per common  share
    would  been $1.02; ratio of earnings to  fixed charges would have been 4.38x
    and ratio of earnings to fixed charges, including preferred dividends  would
    have been 3.68x for the three months ended March 31, 1995.
    

    In  accordance with the current guidelines  of the SEC, no minority interest
    has been recognized even though NPS  will initially own 72.5% of the  common
    stock of SYN.

H)  The  Company has  calculated  the interest  coverage  ratio pursuant  to the
    Company's general  mortgage  indenture  and  has  calculated  the  ratio  of
    earnings  to  fixed  charges  pursuant  to  Item  503  of  the  Commission's
    Regulation S-K.

I)  Represents  the sale  of certain  assets to an  unrelated third  party in  a
    separate transaction.

J)  Represents cash purchase price from the unrelated third party sale proceeds.

K)  Represents various  purchase accounting adjustments  to be  accounted for in
    accordance with the purchase method of accounting.

                                       16
<PAGE>
                    NOTES TO PRO FORMA FINANCIAL INFORMATION

    The following is a detailed allocation  of the purchase price and source  of
    funds,  net of underwriting fees, related to the acquisition transaction (in
    thousands):

   
<TABLE>
<S>                                                                       <C>
Purchase price..........................................................  $ 140,000
Add:  Debt, acquisition, and transition costs...........................      5,000
                                                                          ---------
    Total...............................................................    145,000
Less:  Sale to an unrelated third party.................................     40,000
                                                                          ---------
Adjusted purchase price.................................................  $ 105,000
                                                                          ---------
                                                                          ---------
Allocation of purchase price --
  Cash..................................................................  $   4,117
  Trade receivables.....................................................     11,089
  Inventories...........................................................      6,714
  Prepaid expenses and other............................................      1,137
  Property, plant, and equipment........................................     63,500
  Goodwill and other intangibles........................................     37,446
  Accounts payable and accrued expenses.................................    (15,995)
  Customer deposits.....................................................       (935)
  Deferred income tax...................................................       (373)
  Long-term debt........................................................     (1,700)
                                                                          ---------
    Net assets acquired.................................................  $ 105,000
                                                                          ---------
                                                                          ---------
Source of funds, net --
  Long-term debt........................................................  $  50,004
  Company-Obligated Mandatorily Redeemable Preferred Securities of Trust
   Subsidiary...........................................................     24,212
  Common stock..........................................................     30,784
                                                                          ---------
    Total...............................................................  $ 105,000
                                                                          ---------
                                                                          ---------
</TABLE>
    

L) Represents liabilities  and other deferred  credits that would  be paid  with
    proceeds of the transaction.

M)  Represents the  following debt restructuring  of the  combined companies (in
    thousands):

   
<TABLE>
<S>                                                                       <C>
Historical long-term debt --
  NPS...................................................................  $ 129,318
  Synergy...............................................................      4,330
                                                                          ---------
    Total...............................................................    133,648
                                                                          ---------
Add:  New debt offering.................................................     50,004
Less:  Retirement of Synergy long-term debt.............................     (2,630)
                                                                          ---------
  Pro forma adjustment..................................................     47,374
                                                                          ---------
  Pro forma long-term debt..............................................  $ 181,022
                                                                          ---------
                                                                          ---------
</TABLE>
    

   
N) Represents the net proceeds expected  to be generated by a  Company-Obligated
    Mandatorily  Redeemable  Preferred Securities  of Trust  Subsidiary offering
    that is part of the permanent financing. All of the assets of NWPS  Capital,
    the subsidiary trust, will be approximately $31 million of Subordinated Debt
    Securities  of the Company which  will bear interest at  a rate of     % per
    annum, assuming the issuance of 1.2 million Preferred Securities. Pro  Forma
    amounts shown in the table reflect the portion of the estimated net proceeds
    of the offering of Preferred Securities to be used to fund the Acquisition.
    

O)  Represents the  combination of  purchase accounting  adjustments eliminating
    Synergy's common stock investment of $41,000 against the par value of shares
    expected to be sold in a common stock offering that is part of the permanent
    financing.

                                       17
<PAGE>
                    NOTES TO PRO FORMA FINANCIAL INFORMATION

    The following provides a summary of the net adjustment (in thousands):

   
<TABLE>
<S>                                                                         <C>
Par value of shares generated from NPS common stock offering..............  $   4,309
Less:  elimination of Synergy common stock................................        (41)
                                                                            ---------
  Net.....................................................................  $   4,268
                                                                            ---------
                                                                            ---------
</TABLE>
    

P)  Represents  the combination of  purchase accounting adjustments  eliminating
    Synergy's  additional paid-in capital of $5,284,000 against the net proceeds
    expected to be allocated  to NPS additional paid-in  capital as a result  of
    the common stock offering that is part of the permanent financing.

    The following provides a summary of the net adjustment (in thousands):

   
<TABLE>
<S>                                                                        <C>
Net allocation to additional paid-in capital from NPS common stock
 offering................................................................  $  26,475
Less:  elimination of Synergy additional paid-in capital.................     (5,284)
                                                                           ---------
  Net....................................................................  $  21,191
                                                                           ---------
                                                                           ---------
</TABLE>
    

Q) Represents the elimination of Synergy's remaining equity accounts.

                                       18
<PAGE>
                                THE NWPS TRUSTS

    Each of NWPS Capital Financing I, NWPS Capital Financing II and NWPS Capital
Financing  III is a statutory business  trust formed under Delaware law pursuant
to (i) a separate declaration of trust ( each, a "Declaration") executed by  the
Company,  as sponsor for such  trust (the "Sponsor"), and  the NWPS Trustees (as
defined below) of such trust  and (ii) the filing  of a separate certificate  of
trust  with the Secretary  of State of the  State of Delaware  on June 19, 1995.
Each NWPS Trust exists for the  exclusive purposes of (i) issuing the  Preferred
Securities  and common securities representing undivided beneficial interests in
the assets of such  NWPS Trust (the "Common  Securities" and, together with  the
Preferred Securities, the "Trust Securities"), (ii) investing the gross proceeds
from the sale of the Trust Securities in the Subordinated Debt Securities of the
Company  and  (iii)  engaging  in  only  those  other  activities  necessary  or
incidental thereto. All of the Common Securities will be directly or  indirectly
owned  by the Company. The Common Securities  will rank pari passu, and payments
will be made thereon pro rata, with the Preferred Securities, except that,  upon
an  event of  default under the  Declaration, the  rights of the  holders of the
Common Securities  to payment  in  respect of  distributions and  payments  upon
liquidation,  redemption and otherwise will be subordinated to the rights of the
holders of the  Preferred Securities.  The Company will  directly or  indirectly
acquire  Common Securities in an aggregate liquidation amount equal to 3% of the
total capital of each NWPS Trust. Each NWPS Trust has a term of approximately 55
years but may terminate earlier, as  provided in each Declaration. The  business
and  affairs of  each NWPS Trust  will be  conducted by the  trustees (the "NWPS
Trustees") appointed by the Company as the direct or indirect holder of all  the
Common  Securities.  The holder  of the  Common Securities  will be  entitled to
appoint, remove or replace any of, or increase or reduce the number of, the NWPS
Trustees of a NWPS Trust.  The duties and obligations  of the NWPS Trustees  for
each  NWPS Trust shall be governed by the Declaration for such trust. A majority
of the NWPS Trustees will be persons who are employees or officers of or who are
affiliated with  the  Company  (the  "Regular  Trustees").  In  certain  limited
circumstances   set  forth  in  the  Prospectus  Supplement  for  the  Preferred
Securities, the holders  of a majority  in liquidation amount  of the  Preferred
Securities  will be entitled to appoint  one additional Regular Trustee who need
not be an employee or officer of  or otherwise affiliated with the Company.  One
NWPS  Trustee of  each NWPS Trust  will be  a financial institution  that is not
affiliated with the  Company and  has a  specified minimum  amount of  aggregate
capital,  surplus, and  undivided profits  of not  less than  $50,000,000, which
shall act as property trustee and as  indenture trustee for the purposes of  the
Trust Indenture Act of 1939, as amended (the "Trust Indenture Act"), pursuant to
the  terms set forth  in the Prospectus Supplement  for the Preferred Securities
(the "Property Trustee"). In addition,  unless the Property Trustee maintains  a
principal  place of business  in the State  of Delaware and  otherwise meets the
requirements of applicable law, one NWPS Trustee of each NWPS Trust will have  a
principal  place of business or  reside in the State  of Delaware (the "Delaware
Trustee"). The Company will pay all fees and expenses related to the NWPS Trusts
and the  offering  of  the  Trust  Securities, the  payment  of  which  will  be
guaranteed  by the  Company as described  under "Description  of the Guarantees"
herein. The Delaware Trustee  for each NWPS Trust  is Wilmington Trust  Company,
Rodney  Square North, 1100 North Market  Street, Wilmington, Delaware 19890. The
principal place of  business of each  NWPS Trust  is c/o the  Company, 33  Third
Street S.E., Huron, South Dakota, 57350-1318, telephone (605) 352-8411.

                                       19
<PAGE>
                                USE OF PROCEEDS

   
    If  the Third Party Sale  is consummated, the net  proceeds from the sale of
$102.5  million  of  the  Offered  Securities  will  be  applied  to  fund   the
Acquisition,  including certain transaction  expenses. The Company  will use $50
million of  the net  proceeds to  purchase 50,000  shares of  the 15%  Series  A
Cumulative  Preferred  Stock of  SYN, the  subsidiary of  the Company  formed to
effect the Acquisition, and $52.5 million of the net proceeds will be loaned  by
the Company to SYN. If the Third Party Sale is not consummated, the net proceeds
from  the sale of $142,500,000 of the Offered Securities will be applied to fund
the Acquisition,  including  certain  transaction expenses.  In  that  case  the
Company  will use $68 million  of the net proceeds  to purchase 68,000 shares of
the 15% Series A Cumulative Preferred Stock of SYN and $74.5 million of the  net
proceeds will be loaned by NGC to SYN.
    

    Each  NWPS Trust will use all of the  proceeds received from the sale of its
Preferred Securities to purchase Subordinated Debt Securities from the  Company.
The  Company intends to add  the net proceeds from  the sale of the Subordinated
Debt Securities to its  general funds, to  be used to  fund the Acquisition,  as
described above, and for other general corporate purposes, as described below.

   
    The  net proceeds from the sale of any other Offered Securities will be used
for general corporate purposes, which may include the repayment of indebtedness,
working capital  expenditures  and other  investments  in, or  acquisitions  of,
businesses  and assets.  Pending application of  such net  proceeds for specific
purposes, such proceeds may be invested in short-term or marketable  securities.
Specific  allocations of proceeds to a particular purpose that have been made at
the date of any Prospectus Supplement will be described therein.
    

   
    In the event the Acquisition is  not consummated, the net proceeds from  the
sale  of the  Offered Securities will  be used  to redeem or  acquire and retire
outstanding First Mortgage Bonds (as defined under "Description of the  Mortgage
Bonds"),  repay short  term debt, and  for other general  corporate purposes, as
described above.
    

                RATIO OF EARNINGS TO FIXED CHARGES AND EARNINGS
               TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS

    The following table sets forth the  ratios of earnings to fixed charges  and
earnings to combined fixed charges and preferred dividends for the Company on an
historical  basis for the fiscal years ended December 31, 1994, 1993, 1992, 1991
and 1990, and for the three-month period  ended March 31, 1995. Such ratios  are
also presented on a pro forma basis for the year ended December 31, 1994 and the
three-month  period ended  March 31, 1995.  For the purpose  of calculating such
ratios, "earnings" consist  of income from  continuing operations before  income
taxes,  "fixed charges" consist of interest on all indebtedness, amortization of
debt expense and  the percentage of  rental expense on  operating leases  deemed
representative  of  the  interest  factor  and  "preferred  dividends" represent
dividends paid  on all  preferred  shares outstanding  during the  periods.  See
"Northwestern  Public Service Company  and Synergy Group  Incorporated Pro Forma
Financial Information" for the assumptions upon  which the pro forma ratios  are
based.
   
<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31,                      QUARTER ENDED
                                           ---------------------------------------------------------------    MARCH 31,
                                              1990         1991         1992         1993         1994          1995
                                              -----        -----        -----        -----        -----     -------------
<S>                                        <C>          <C>          <C>          <C>          <C>          <C>
Ratio of Earnings to Fixed Charges.......        4.61         4.09         3.42         3.52         3.39          5.09
Ratio of Earnings to Combined Fixed
 Charges and Preferred Dividends.........        4.28         3.79         3.33         3.45         3.33          5.00

<CAPTION>
                                                      PRO FORMA
                                           --------------------------------
                                              YEAR ENDED      QUARTER ENDED
                                             DECEMBER 31,       MARCH 31,
                                                 1994             1995
                                           -----------------  -------------
<S>                                        <C>                <C>
Ratio of Earnings to Fixed Charges.......           2.73             5.52
Ratio of Earnings to Combined Fixed
 Charges and Preferred Dividends.........           2.25             4.69
</TABLE>
    

                       DESCRIPTION OF THE MORTGAGE BONDS

GENERAL

    The  Mortgage Bonds will be bonds,  notes or other evidences of indebtedness
authenticated and  delivered under  a  General Mortgage  Indenture and  Deed  of
Trust, between the Company and The Chase

                                       20
<PAGE>
   
Manhattan  Bank (N.A.) (the "New Mortgage Trustee"), dated as of August 1, 1993.
The New Mortgage Trustee shall act as indenture trustee for the purposes of  the
Trust  Indenture Act  of 1939,  as amended.  Such General  Mortgage and  Deed of
Trust, as supplemented by various supplemental indentures, including one or more
supplemental indentures relating to the Mortgage Bonds, is hereinafter  referred
to  as the "New Mortgage." The summaries under this heading do not purport to be
complete and  are  subject to  the  detailed  provisions of  the  New  Mortgage.
Capitalized  terms used  under this heading  which are not  otherwise defined in
this Prospectus shall have  the meanings ascribed thereto  in the New  Mortgage.
Wherever  particular provisions of the New Mortgage or terms defined therein are
referred to, such provisions or definitions  are incorporated by reference as  a
part  of the statements made  herein and such statements  are qualified in their
entirety by such reference.  References to article and  section numbers in  this
description of the Mortgage Bonds, unless otherwise indicated, are references to
article and section numbers of the New Mortgage.
    

    The  New Mortgage provides that additional bonds may be issued thereunder on
the basis of Pledged Bonds (as hereinafter defined), property additions, retired
bonds and  cash.  (See  "Issuance  of Additional  Mortgage  Bonds"  below.)  The
Mortgage  Bonds and all other bonds heretofore or hereafter issued under the New
Mortgage are collectively referred to herein as the "Mortgage Bonds."

    Reference is made to the Prospectus Supplement for the Mortgage Bonds for  a
description of the following terms of the series of Mortgage Bonds in respect of
which  this Prospectus is being delivered: (i) the title (series designation) of
such Mortgage Bonds; (ii) the limit, if any, upon the aggregate principal amount
of such Mortgage Bonds, (iii) the date  or dates on which the principal of  such
Mortgage  Bonds is payable; (iv) the rate  or rates at which such Mortgage Bonds
will bear interest,  if any; the  date or  dates from which  such interest  will
accrue;  the dates  on which  such interest  will be  payable ("Interest Payment
Dates") and the regular record dates  for the interest payable on such  Interest
Payment  Dates; (v) the bases  on which the Mortgage  Bonds will be issued; (vi)
the option, if any, of the Company to redeem such Mortgage Bonds and the periods
within which  or the  dates on  which, the  prices at  which and  the terms  and
conditions upon which, such Mortgage Bonds may be redeemed, in whole or in part,
upon  the exercise of such option; (vii)  the obligation, if any, of the Company
to redeem  or purchase  such Mortgage  Bonds  pursuant to  any sinking  fund  or
analogous provisions or at the option of the Holder and the periods within which
or  the dates on  which, the prices at  which and the  terms and conditions upon
which such Mortgage Bonds  will be redeemed,  in whole or  in part, pursuant  to
such  obligation; (viii) the denominations in  which such Mortgage Bonds will be
issuable; and (ix) any other terms of such Mortgage Bonds not inconsistent  with
the provisions of the New Mortgage.

    While  the  New  Mortgage contains  provisions  for the  maintenance  of the
Mortgaged Property, it  does not  contain any  provisions for  a maintenance  or
sinking  fund and, except  as may be  provided in a  Supplemental Indenture (and
described in the applicable Prospectus Supplement), there will be no  provisions
for any such funds for the Mortgage Bonds.

REDEMPTION OF THE MORTGAGE BONDS

    Any terms for the optional or mandatory redemption of Mortgage Bonds will be
set forth in the Prospectus Supplement. Except as shall otherwise be provided in
the  applicable Prospectus Supplement with  respect to Mortgage Bonds redeemable
at the option of the Holder, Mortgage Bonds will be redeemable only upon  notice
by  mail not less than 30  days prior to the date  fixed for redemption, and, if
less than all the Mortgage Bonds of a series, or any tranche thereof, are to  be
redeemed,  the particular Mortgage Bonds to be redeemed will be selected by such
method as shall  be provided for  the particular  series or tranche,  or in  the
absence  of any such provision, by such  method as the Bond Registrar deems fair
and appropriate. (See Sections 5.03 and 5.04.)

    Any notice of redemption at  the option of the  Company may state that  such
redemption  shall be conditioned upon receipt by the New Mortgage Trustee, on or
prior to the dated  fixed for such  redemption, of money  sufficient to pay  the
principal  of and premium, if any, and  interest, if any, on such Mortgage Bonds
and that if such money has not been so received, such notice will be of no force
and effect and the Company will not  be required to redeem such Mortgage  Bonds.
(See Section 5.04.)

                                       21
<PAGE>
SECURITY

    GENERAL.   Except as discussed below, Mortgage Bonds now or hereafter issued
under the New Mortgage will be secured primarily by:

        (a) bonds ("First Mortgage Bonds") issued under the Company's  Indenture
    dated  August 1,  1940 (the "First  Mortgage"), to The  Chase Manhattan Bank
    (National Association), successor by  merger to The  Chase National Bank  of
    the  City of New York, as trustee  (the "First Mortgage Trustee"), and C. J.
    Heinzelmann, successor  to  Carl  E. Buckley,  as  individual  trustee,  and
    delivered  to the New  Mortgage Trustee under the  New Mortgage, which First
    Mortgage Bonds will  be secured, equally  and ratably with  all other  bonds
    issued  under the First Mortgage, by a valid first lien on substantially all
    of the fixed property, franchises and  rights of the Company of a  character
    not  expressly  excepted from  the  lien (which  excepted  property consists
    principally of  cash, securities,  receivables, personal  property held  for
    sale  or lease or consumable in operations, and certain real estate held for
    resale and  not  used  or useful  in  the  public utility  business  of  the
    Company),  subject to  permitted encumbrances  and liens  as defined  in the
    First Mortgage; and

        (b) the lien of the New Mortgage on the Company's properties used in the
    generation, production, transmission or  distribution of electricity or  the
    distribution  of gas in any form and for  any purpose in the States of South
    Dakota or Nebraska, together with the properties owned by the Company as  of
    August  1, 1993 located in the States of North Dakota and Iowa which consist
    principally of shared ownership interests in electric generating  facilities
    (the  Company does  not serve  customers in the  States of  North Dakota and
    Iowa), but not,  unless the  Company otherwise elects,  any future  acquired
    properties  in the States of North Dakota  and Iowa, which lien is junior to
    the lien of the First Mortgage.

    As  discussed  below   under  "Pledged   Bonds,"  following   a  merger   or
consolidation of another corporation into the Company, the Company could deliver
to  the New  Mortgage Trustee  bonds issued  under an  existing mortgage  on the
properties of such other corporation in lieu  of or in addition to bonds  issued
under  the First Mortgage. In  such event, the Mortgage  Bonds would be secured,
additionally, by  such  bonds  and by  the  lien  of the  New  Mortgage  on  the
properties of such other corporation, which would be junior to the liens of such
existing  mortgage and the First Mortgage. The First Mortgage and all such other
mortgages are hereinafter, collectively, called  the "Class "A" Mortgages,"  and
all bonds issued under the Class "A" Mortgages and delivered to the New Mortgage
Trustee  are hereinafter collectively called the "Pledged Bonds." If and when no
Class "A" Mortgages  are in  effect, the New  Mortgage will  constitute a  first
mortgage lien on all property of the Company subject thereto.

    PLEDGED  BONDS.   The Pledged  Bonds will  be issued  and delivered  to, and
registered in the name of, the New  Mortgage Trustee or its nominee and will  be
owned and held by the New Mortgage Trustee, subject to the provisions of the New
Mortgage,  for the benefit of the Holders of all Mortgage Bonds Outstanding from
time to time,  and the  Company will  have no  interest in  such Pledged  Bonds.
Except  as may be otherwise set forth  in the supplemental indenture pursuant to
which any Mortgage Bonds are to be issued, Pledged Bonds issued as the basis for
the authentication and delivery  of such Mortgage Bonds  (a) will mature on  the
same  dates, and in the same principal  amounts, as such Mortgage Bonds, and (b)
will contain, in addition to  any mandatory redemption provisions applicable  to
all  Pledged Bonds Outstanding  under the related  Class "A" Mortgage, mandatory
redemption provisions correlative to provisions for mandatory redemption, or for
redemption at the option  of the Holder, of  such Mortgage Bonds. Pledged  Bonds
issued  as the basis for  authentication and delivery of  a series or tranche of
Mortgage Bonds (x) may,  but need not,  bear interest, any  such interest to  be
payable  at the same times  as interest on the Mortgage  Bonds of such series or
tranche, and  (y) may,  but  need not,  contain  provisions for  the  redemption
thereof  at the  option of  the Company,  any such  redemption to  be made  at a
redemption price or prices  not less than the  principal amount of such  Pledged
Bonds. (See Sections 4.02 and 7.01.)

    Any  payment by the  Company of principal  of or premium  or interest on the
Pledged Bonds  held by  the New  Mortgage Trustee  will be  applied by  the  New
Mortgage  Trustee to the payment  of any principal, premium  or interest, as the
case may be, in  respect of the Mortgage  Bonds which is then  due, and, to  the
extent of such application, the obligation of the Company under the New Mortgage
to make such payment in

                                       22
<PAGE>
respect  of the Mortgage Bonds  will be deemed satisfied  and discharged. If, at
the time of any such  payment of principal of Pledged  Bonds, there shall be  no
principal  then  due in  respect to  the  Mortgage Bonds,  the proceeds  of such
payment will be deemed  to constitute Funded  Cash and will be  held by the  New
Mortgage Trustee as part of the New Mortgaged Property, to be withdrawn, used or
applied  as provided in the New Mortgage. If, at the time of any such payment of
premium or interest on Pledged Bonds, there shall be no premium or interest,  as
the case may be, then due in respect of the Mortgage Bonds, the proceeds of such
payment  will be remitted to  the Company at its  request. (See Section 7.02 and
"Withdrawal of  Cash" below.)  Any payment  by the  Company of  principal of  or
premium  or interest on Mortgage Bonds  authenticated and delivered on the basis
of the deposit with  the New Mortgage  Trustee of Pledged  Bonds (other than  by
application  of the  proceeds in  respect of  such Pledged  Bonds) will,  to the
extent thereof,  be  deemed to  satisfy  and  discharge the  obligation  of  the
Company,  if any, to  make a payment  of principal, premium  or interest, as the
case may be, in respect of such Pledged Bonds which is then due.

    The New Mortgage  Trustee may  not sell,  assign or  otherwise transfer  any
Pledged Bonds except to a successor trustee under the New Mortgage. (See Section
7.04.)  At the time any Mortgage Bonds of  any series or tranche which have been
authenticated and  delivered  upon  the  basis of  Pledged  Bonds  cease  to  be
Outstanding  (other than as a  result of the application  of the proceeds of the
payment or redemption  of such Pledged  Bonds), the New  Mortgage Trustee  shall
surrender  to or upon the order of the Company an equal principal amount of such
Pledged  Bonds  having  the  same  Stated  Maturity  and  mandatory   redemption
provisions as such Mortgage Bonds. (See Section 7.03.)

    At  the date of  this Prospectus, the  only Class "A"  Mortgage is the First
Mortgage and the  only Pledged Bonds  issuable at this  time are First  Mortgage
Bonds  issuable thereunder. The New  Mortgage provides that in  the event of the
merger or consolidation of another company with or into the Company, an existing
mortgage constituting a lien  on properties of such  other company prior to  the
lien of the New Mortgage may be designated by the Company as an additional Class
"A"  Mortgage. Bonds thereafter  issued under such  additional mortgage would be
Pledged Bonds and could provide the basis for the authentication and delivery of
Mortgage Bonds under the New Mortgage. (See Section 7.06.) When no Pledged Bonds
are Outstanding under a Class "A" Mortgage except for Pledged Bonds held by  the
New  Mortgage  Trustee, then,  at  the request  of  the Company  and  subject to
satisfaction of certain conditions, the New Mortgage Trustee will surrender such
Pledged Bonds  for cancellation,  and the  related Class  "A" Mortgage  will  be
satisfied  and discharged, the lien of such  Class "A" Mortgage on the Company's
property will cease to exist  and the priority of the  lien of the New  Mortgage
will be increased. (See Section 7.07.)

   
    The  New Mortgage  contains no restrictions  on the issuance  of bonds under
Class "A" Mortgages  in addition  to Pledged Bonds  issued to  the New  Mortgage
Trustee  as the  basis for  the authentication  and delivery  of Mortgage Bonds.
First Mortgage Bonds  may currently be  issued under the  First Mortgage on  the
basis  of property additions,  retirements of bonds  previously issued under the
First Mortgage and cash  deposited with the First  Mortgage Trustee. As of  July
27,  1995, $47,500,000 of  First Mortgage Bonds (other  than Pledged Bonds) were
outstanding.
    

    LIEN OF  THE NEW  MORTGAGE.   The  properties of  the  Company used  in  the
generation,  production, transmission  and distribution  of electricity  and the
distribution of gas  in any  form and  for any purpose  in the  States of  South
Dakota or Nebraska together with properties owned by the Company as of August 1,
1993 located in the States of North Dakota and Iowa (but not, unless the Company
otherwise  elects, any future acquired properties  in the States of North Dakota
and Iowa) are subject to the lien of the New Mortgage. Substantially all of such
property, while subject to the lien of the New Mortgage, will be also subject to
the prior lien of the First Mortgage.  The Mortgage Bonds will have the  benefit
of the prior lien of the First Mortgage on such property, and the benefit of the
prior lien of any additional Class "A" Mortgage on any property subject thereto,
to  the extent of the aggregate principal  amount of Pledged Bonds, issued under
the respective Class "A" Mortgages, held by the New Mortgage Trustee.

    The lien of the New Mortgage is subject to Permitted Liens which include tax
liens and other  governmental charges  which are  not delinquent  and which  are
being  contested, construction and materialmen's  liens, certain judgment liens,
easements, reservations and rights  of others (including governmental  entities)

                                       23
<PAGE>
in,  and defects of title in, certain property of the Company, certain leasehold
interests, liens on the Company's pollution  control and sewage and solid  waste
facilities and certain other liens and encumbrances. (See Section 1.01.)

    There  are excepted from the  lien of the New  Mortgage, among other things,
cash and securities  not paid to,  deposited with  or held by  the New  Mortgage
Trustee  under the New  Mortgage; contracts, leases and  other agreements of all
kinds, contract rights, bills, notes and other instruments, accounts receivable,
claims, certain  intellectual property  rights  and other  general  intangibles;
permits,   licenses  and   franchises;  automobiles,   other  vehicles,  movable
equipment, aircraft and vessels; all goods, wares and merchandise held for  sale
in  the ordinary  course of business  or for  use by or  for the  benefit of the
Company; fuel, materials, supplies and other personal property consumable in the
operations of the Company's business; computers, machinery and equipment;  coal,
ore,  gas,  oil, minerals  and  timber mined  or  extracted from  the  land; gas
transmission lines connecting  wells with main  or branch trunk  lines or  field
gathering  lines  connecting wells  with main  or  branch trunk  lines; electric
energy, gas, steam, water and  other products generated, produced or  purchased;
leasehold  interests; and  all books  and records.  (See Granting  Clauses.) The
First Mortgage contains similar, but not identical, exceptions.

    Without the consent of the Holders, the Company and the New Mortgage Trustee
may enter  into  supplemental indentures  to  subject to  the  lien of  the  New
Mortgage additional property, whether or not used in the electric or gas utility
businesses  (including  property which  would  otherwise be  excepted  from such
lien). (See Section 14.01.) Such property,  so long as the same would  otherwise
constitute  Property Additions (as described  below), would thereupon constitute
Property Additions and  be available  as a basis  for the  issuance of  Mortgage
Bonds. (See "Issuance of Additional Mortgage Bonds" below.)

    The  New Mortgage contains provisions  subjecting after-acquired property to
the lien  thereof,  subject to  the  prior lien  of  the First  Mortgage.  These
provisions  are limited in the  case of consolidation or  merger (whether or not
the Company is the  surviving corporation) or sale  of substantially all of  the
Company's assets. In the event of consolidation or merger or the transfer of all
the mortgaged property as or substantially as an entirety, the New Mortgage will
not be required to be a lien upon any of the properties then owned or thereafter
acquired  by  the successor  corporation,  except properties  acquired  from the
Company in or as a result  of such transaction and improvements, extensions  and
additions  to such properties and renewals, replacements and substitutions of or
for  any  part  or  parts  of   such  properties.  (See  Article  Thirteen   and
"Consolidation,  Merger,  Conveyance, Transfer  or  Lease" below.)  In addition,
after-acquired property  may  be  subject  to  vendors'  liens,  purchase  money
mortgages  and other liens thereon at the time of acquisition thereof, including
the lien of any Class "A" Mortgage.

    The New Mortgage provides  that the New Mortgage  Trustee will have a  lien,
prior  to the lien  on behalf of  the holders of  Mortgage Bonds, upon Mortgaged
Property and any money collected by the New Mortgage Trustee as proceeds of  the
Mortgaged  Property, for the payment of its reasonable compensation and expenses
and for indemnity against certain liabilities. (See Section 11.07.)

ISSUANCE OF ADDITIONAL MORTGAGE BONDS

    The maximum principal amount of Mortgage Bonds which may be issued under the
New Mortgage is limited to $500,000,000,  provided that, without the consent  of
the   Holders,  the  Company  and  the  New  Mortgage  Trustee  may  enter  into
supplemental indentures to increase such amount. (See Sections 3.01 and  14.01.)
Mortgage  Bonds of any series may be issued from time to time under Article Four
of the New Mortgage on  the basis of, and in  an aggregate principal amount  not
exceeding:

        (1) the aggregate principal amount of Pledged Bonds issued and delivered
    to the Trustee;

        (2)  75%  of the  Cost or  Fair  Value (whichever  is less)  of Property
    Additions (as  described  below) which  do  not constitute  Bonded  Property
    Additions  (being, generally,  Property Additions  which have  been made the
    basis of the authentication and delivery  of Mortgage Bonds, the release  of
    mortgaged  property  or  cash  withdrawals)  after  certain  deductions  and
    additions, primarily including adjustments to offset property retirements;

                                       24
<PAGE>
        (3) the aggregate principal  amount of Retired  Bonds (which consist  of
    Mortgage  Bonds  no longer  Outstanding  under the  New  Mortgage (including
    Mortgage Bonds deposited under  any sinking or  analogous funds) which  have
    not  been used for certain  other purposes under the  New Mortgage and which
    are not to  be paid,  redeemed or otherwise  retired by  the application  of
    Funded  Cash),  but  if Pledged  Bonds  have  been made  the  basis  for the
    authentication and delivery of such Retired Bonds, only if the related Class
    "A" Mortgage has been discharged; and

        (4) an amount of cash deposited with the Trustee.

    In general,  the issuance  of  Mortgage Bonds  is  subject to  Adjusted  New
Earnings of the Company for 12 consecutive months within the preceding 18 months
being  at least  one and three-fourths  the Annual Interest  Requirements on all
Mortgage Bonds at  the time Outstanding,  Mortgage Bonds then  applied for,  all
outstanding  Pledged Bonds  other than  Pledged Bonds  held by  the New Mortgage
Trustee under  the  New  Mortgage,  and all  other  indebtedness  (with  certain
exceptions) secured by a lien prior to the lien of the New Mortgage, except that
no such net earnings requirement need be met if the additional Mortgage Bonds to
be  issued are to have no Stated Interest Rate prior to Maturity. The Company is
not required  to satisfy  the  net earnings  requirement  prior to  issuance  of
Mortgage  Bonds  as  provided in  (1)  above  if the  Pledged  Bonds  issued and
delivered to the New Mortgage Trustee as  the basis for such issuance have  been
authenticated and delivered under the related Class "A" Mortgage on the basis of
retired  Pledged Bonds  unless (a) the  Stated Maturity of  such retired Pledged
Bonds is  a date  more than  five  years after  the date  of the  Company  Order
requesting  the authentication and  delivery of such Mortgage  Bonds and (b) the
Stated Interest Rate, if any, on such retired Pledged Bonds immediately prior to
Maturity is less than the Stated Interest  Rate, if any, on such Mortgage  Bonds
to  be  in  effect upon  the  initial  authentication and  delivery  thereof. In
addition, the Company is  not required to satisfy  the net earnings  requirement
prior  to issuance  of Mortgage Bonds  as provided  in (3) above  unless (a) the
Stated Maturity of the Retired  Bonds is a date more  than five years after  the
date  of the  Company Order requesting  the authentication and  delivery of such
Mortgage Bonds and (b) the Stated Interest  Rate, if any, on such Retired  Bonds
immediately  prior to Maturity is less than the Stated Interest Rate, if any, on
such Mortgage Bonds to be in effect upon the initial authentication and delivery
of such Mortgage  Bonds. In general,  the interest requirement  with respect  to
variable interest rate indebtedness, if any, is determined with reference to the
rate  or rates in effect on the date immediately preceding such determination or
the rate to  be in  effect upon initial  authentication. (See  Section 1.03  and
Article Four).

    Adjusted  Net Earnings are calculated before, among other things, provisions
for income  taxes; depreciation  or amortization  of property;  interest on  any
indebtedness  and amortization of  debt discount and  expense; any non-recurring
charge to income of  whatever kind or nature  (including without limitation  the
recognition  of expense or impairment due to the non-recoverability of assets or
expense), whether or not recorded as a non-recurring item in the Company's books
of account; and any  refund of revenues previously  collected or accrued by  the
Company  subject to possible refund. With respect  to Mortgage Bonds of a series
subject to a  Periodic Offering (such  as a medium-term  note program), the  New
Mortgage Trustee will be entitled to receive a certificate evidencing compliance
with  the net earnings  requirements only once, at  or prior to  the time of the
first authentication and delivery of the  Mortgage Bonds of such series  (unless
the  Company Order requesting  the authentication and  delivery of such Mortgage
Bonds is delivered on or after the date which is two years after the most recent
Net Earnings Certificate  was delivered,  in which case  an updated  certificate
would be required to be delivered). (See Sections 1.03 and 4.01.)

    Property  Additions generally  include any  property which  is owned  by the
Company and is subject to the lien of the New Mortgage, except any property  the
cost  of  acquisition or  construction  of which  is  properly chargeable  to an
operating expense account of the Company. (See Section 1.04.)

    Unless otherwise  provided  in  the applicable  Prospectus  Supplement,  the
Company will issue the Mortgage Bonds on the basis of Pledged Bonds (I.E., First
Mortgage Bonds) issued under its First Mortgage.

                                       25
<PAGE>
RELEASE OF PROPERTY

    The  Company may obtain the release from the lien of the New Mortgage of any
Mortgaged Property if the Fair Value of all of the Mortgaged Property (excluding
the Mortgaged Property to be released but including any Mortgaged Property to be
acquired by the Company with the  proceeds of, or otherwise in connection  with,
such  release) equals or exceeds an amount equal to twenty-fifteenths (20/15ths)
of the aggregate principal amount of Mortgage Bonds Outstanding and bonds issued
under Class "A" Mortgages outstanding (other than Pledged Bonds).

    The New Mortgage provides simplified procedures for the release of  property
which  has been released from the lien of a Class "A" Mortgage, minor properties
and property taken by eminent domain,  and provides for dispositions of  certain
obsolete  property and grants or surrender of certain rights without any release
or consent by the New Mortgage Trustee.

    If any property released from the lien  of the New Mortgage continues to  be
owned by the Company after such release, the New Mortgage will not become a lien
on  any  improvement,  extension  or  addition  to  such  property  or renewals,
replacements or substitutions of or for any part or parts of such property. (See
Article Eight.)

WITHDRAWAL OF CASH

    Subject to certain  limitations, cash  held by the  New Trustee  may (1)  be
withdrawn  by the Company (a) to the extent of the Cost or Fair Value (whichever
is less) of Unbonded Property Additions, after certain deductions and  additions
primarily including adjustments to offset retirements, or (b) in an amount equal
to  twenty-fifteenths (20/15ths) of  the aggregate principal  amount of Mortgage
Bonds that the Company would be entitled to issue on the basis of Retired  Bonds
(with  the  entitlement  to such  issuance  being  waived by  operation  of such
withdrawal), or (c) in  an amount equal to  twenty-fifteenths (20/15ths) of  the
aggregate  principal amount of  any Outstanding Mortgage  Bonds delivered to the
New Trustee, or  (2) upon  the request  of the Company,  be applied  to (a)  the
purchase of Mortgage Bonds (at prices not exceeding twenty-fifteenths (20/15ths)
of  the principal  amount thereof)  or (b) the  redemption or  payment at Stated
Maturity of Mortgage Bonds (with any Mortgage Bonds received by the New  Trustee
pursuant  to these  provisions being canceled  by the New  Trustee) (see Section
8.06); provided, however, that cash deposited  with the New Mortgage Trustee  as
the basis for the authentication and delivery of Mortgage Bonds, as well as cash
representing  a payment of principal of Pledged  Bonds, may only be withdrawn in
an amount equal to the aggregate principal amount of Mortgage Bonds the  Company
would  be entitled to issue on any  basis (with the entitlement to such issuance
being waived by operation of such withdrawal),  or may, upon the request of  the
Company,  be applied to the purchase, redemption or payment of Mortgage Bonds at
prices not  exceeding,  in the  aggregate,  the principal  amount  thereof  (See
Sections 4.05 and 7.02).

CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

    The  Company may not consolidate with or merge into any other corporation or
convey, transfer  or lease  the Mortgaged  Property as  or substantially  as  an
entirety  to any  person unless (a)  such transaction  is on such  terms as will
fully preserve the  lien and security  of the  New Mortgage and  the rights  and
powers  of the New Mortgage  Trustee and Holders, (b)  the corporation formed by
such consolidation  or into  which the  Company is  merged or  the person  which
acquires  by conveyance or transfer, or  which leases, the Mortgaged Property as
or substantially as an  entirety is a corporation  organized and existing  under
the  laws of the United  States of America or any  state or territory thereof or
the District of Columbia, and such corporation executes and delivers to the  New
Mortgage  Trustee a supplemental indenture, which contains an assumption by such
corporation of the due and punctual payment of the principal of and premium,  if
any,  and interest, if any, on the Mortgage  Bonds and the performance of all of
the covenants of the Company under the New Mortgage and which contains a  grant,
conveyance,  transfer and mortgage by the corporation confirming the lien of the
New Mortgage on the Mortgaged Property and subjecting to such lien all  property
thereafter  acquired by the  corporation which shall  constitute an improvement,
extension or addition  to the Mortgaged  Property or a  renewal, replacement  or
substitution  of  or  for  any  part  thereof,  and,  at  the  election  of  the
corporation, subjecting to the lien of the New Mortgage such other property then
owned or thereafter acquired by the

                                       26
<PAGE>
corporation as the corporation shall  specify, and (c) in  the case of a  lease,
such  lease will be made expressly subject  to termination by the Company or the
New Mortgage Trustee at any time during the continuance of an Event of  Default.
(See Section 13.01.)

   
    Other  than the security afforded by the  lien of the First Mortgage and the
New Mortgage and the restrictions on  the issuance of additional First  Mortgage
Bonds  and New Mortgage Bonds, there are  no provisions of the First Mortgage or
the New Mortgage which afford the holders of the Offered Bonds protection in the
event of a highly  leveraged transaction, reorganization, restructuring,  merger
or similar transaction involving the Company. Neither the First Mortgage nor the
New  Mortgage contain provisions  requiring the repurchase  of the Offered Bonds
upon a change in control of the Company.
    

MODIFICATION OF NEW MORTGAGE
    Without the consent of any Holders, the Company and the New Mortgage Trustee
may enter into  one or  more supplemental indentures  for any  of the  following
purposes:

        (a)  to evidence the succession of another person to the Company and the
    assumption by any such successor of the covenants of the Company in the  New
    Mortgage and in the Mortgage Bonds; or

        (b)  to add one or more covenants of the Company or other provisions for
    the benefit of  all Holders  or for  the benefit of  the Holders  of, or  to
    remain  in effect only so long as there shall be Outstanding, Mortgage Bonds
    of one or  more specified series,  or one  or more tranches  thereof, or  to
    surrender any right or power conferred upon the Company by the New Mortgage;
    or

        (c)  to correct or amplify  the description of any  property at any time
    subject to the lien  of the New  Mortgage, or better  to assure, convey  and
    confirm  to the New Mortgage Trustee any  property subject or required to be
    subjected to the lien of the New Mortgage, or to subject to the lien of  the
    New Mortgage additional property; or

        (d)  to convey, transfer and  assign to the New  Mortgage Trustee and to
    subject to the lien of the New Mortgage with the same force and effect as if
    included in the New Mortgage, property  of subsidiaries of the Company  used
    or  to be used for one or more  purposes which if owned by the Company would
    constitute property  used or  to be  used for  one or  more of  the  Primary
    Purposes of the Company's Business, which property shall for all purposes of
    the New Mortgage be deemed to be property of the Company, together with such
    other  provisions as may be appropriate  to express the respective rights of
    the New Mortgage Trustee and the Company in regard thereto; or

        (e) to change or eliminate any provision  of the New Mortgage or to  add
    any  new  provision  to the  New  Mortgage,  provided that  if  such change,
    elimination or addition adversely  affects the interests  of the Holders  of
    the  Mortgage Bonds of any  series or tranche in  any material respect, such
    change, elimination or addition will  become effective with respect to  such
    series  or tranche  only when  no Mortgage  Bond of  such series  or tranche
    remains outstanding under the New Mortgage; or

        (f) to establish the form or terms  of the Mortgage Bonds of any  series
    or tranche as permitted by the New Mortgage; or

        (g)  to provide for the authentication and delivery of bearer securities
    and coupons appertaining thereto representing interest, if any, thereon  and
    for  the procedures for  the registration, exchange  and replacement thereof
    and for the giving of notice to, and the solicitation of the vote or consent
    of, the  holders thereof,  and  for any  and  all other  matters  incidental
    thereto; or

        (h)  to  evidence and  provide for  the acceptance  of appointment  by a
    successor trustee or by a co-trustee or separate trustee; or

        (i) to provide  for the  procedures required  to permit  the Company  to
    utilize, at its option, a noncertificated system of registration for all, or
    any series or tranche of, the Mortgage Bonds; or

        (j)  to change any place where (1) the principal of and premium, if any,
    and interest, if any, on  the Mortgage Bonds of  any series, or any  tranche
    thereof,  will be  payable, (2)  any Mortgage  Bonds of  any series,  or any
    tranche thereof, may be  surrendered for registration  of transfer, (3)  any
    Mortgage Bonds

                                       27
<PAGE>
    of  any series, or any tranche thereof, may be surrendered for exchange, and
    (4) notices and demands to  or upon the Company  in respect of the  Mortgage
    Bonds  of any series,  or any tranche  thereof, and the  New Mortgage may be
    served; or

        (k) to  cure  any ambiguity,  to  correct or  supplement  any  provision
    therein  which may  be defective  or inconsistent  with any  other provision
    therein, or to make any  changes to the provisions  thereof or to add  other
    provisions  with  respect to  matters and  questions  arising under  the New
    Mortgage, so long as such other changes or additions do not adversely affect
    the interests of the Holders of Mortgage  Bonds of any series or tranche  in
    any material respect; or

        (l) to reflect changes in Generally Accepted Accounting Principles; or

        (m)  to provide the terms and  conditions of the exchange or conversion,
    at the  option of  the  holders of  Mortgage Bonds  of  any series,  of  the
    Mortgage  Bonds of such series for or into Mortgage Bonds of other series or
    stock or other securities of the Company or any other corporation; or

        (n) to change the  words "Mortgage Bonds" to  "First Mortgage Bonds"  in
    the  descriptive  title  of all  Outstanding  Bonds  at any  time  after the
    discharge of the First Mortgage; or

        (o) to comply with the rules  or regulations of any national  securities
    exchange on which any of the Mortgage Bonds may be listed; or

        (p) to modify Section 3.01(a) to increase the aggregate principal amount
    of  Mortgage Bonds  which may be  authenticated and delivered  under the New
    Mortgage. (See Section 14.01.)

    Without limiting the generality of the foregoing, if the Trust Indenture Act
is amended after  the date  of the  New Mortgage  in such  a way  as to  require
changes  to  the  New  Mortgage  or  the  incorporation  therein  of  additional
provisions or so  as to  permit changes to,  or the  elimination of,  provisions
which,  at the date of the New Mortgage or at any time thereafter, were required
by the Trust Indenture Act to be contained in the New Mortgage, the Company  and
the New Mortgage Trustee may, without the consent of any Holders, enter into one
or  more  supplemental indentures  to evidence  or  effect such  amendment. (See
Section 14.01.)

   
    Except as provided  above, the consent  of the  Holders of not  less than  a
majority  in aggregate principal amount of the Mortgage Bonds of all series then
Outstanding, considered as one class, is required for the purpose of adding  any
provisions  to, or changing in any manner,  or eliminating any of the provisions
of, the New Mortgage pursuant to one or more supplemental indentures;  provided,
however,  if  less than  all of  the  series of  Mortgage Bonds  Outstanding are
directly affected by a proposed supplemental indenture, then the consent only of
the Holders of a majority in aggregate principal amount of Outstanding  Mortgage
Bonds  of all  series so  directly affected,  considered as  one class,  will be
required; and provided, further, that if  the Mortgage Bonds of any series  have
been  issued in more than one tranche and if the proposed supplemental indenture
directly affects the rights of  the Holders of one or  more, but less than  all,
such  tranches, then the consent only of  the Holders of a majority in aggregate
principal amount of the Outstanding Mortgage  Bonds of all tranches so  directly
affected, considered as one class, will be required; and provided, further, that
no such amendment or modification may, without the consent of each Holder of the
Outstanding  New Mortgage of  each series or  tranche directly affected thereby,
(a) change  the Stated  Maturity of  the  principal of,  or any  installment  of
principal  of or interest on, any Mortgage  Bond, or reduce the principal amount
thereof or the rate  of interest thereon  (or the amount  of any installment  of
interest  thereon) or change the  method of calculating such  rate or reduce any
premium payable  upon  the redemption  thereof,  or  reduce the  amount  of  the
principal of a Discount Bond that would be due and payable upon a declaration of
acceleration  of maturity or change the coin  or currency (or other property) in
which any Mortgage Bond or  any premium or the  interest thereon is payable,  or
impair the right to institute suit for the enforcement of any such payment on or
after  the Stated Maturity thereof  (or, in the case  of redemption, on or after
the redemption date), (b) permit the creation  of any lien ranking prior to  the
lien  of  the New  Mortgage  with respect  to all  or  substantially all  of the
Mortgaged Property  or  terminate  the  lien  of the  New  Mortgage  on  all  or
substantially  all  of the  Mortgaged Property,  or deprive  such Holder  of the
benefit of  the  security of  the  lien of  the  New Mortgage,  (c)  reduce  the
percentage  in principal amount of the Outstanding Mortgage Bonds of such series
or tranche,  the consent  of  the Holders  of which  is  required for  any  such
supplemental
    

                                       28
<PAGE>
   
indenture,  or the consent of the Holder of  which is required for any waiver of
compliance with any provision of the New Mortgage or any default thereunder  and
its consequences, or reduce the requirements for quorum or voting, or (d) modify
certain  of  the  provisions  of  the  New  Mortgage  relating  to  supplemental
indentures, waiver  of  certain  covenants  and  waivers  of  past  defaults.  A
supplemental  indenture  which  changes  or  eliminates  any  covenant  or other
provision of the New Mortgage which  has expressly been included solely for  the
benefit of the Holders of, or which is to remain in effect only so long as there
shall  be Outstanding Mortgage Bonds of one  or more specified series, or one or
more tranches thereof, or modifies the  rights of the Holders of Mortgage  Bonds
of  such series or  tranches with respect  to such covenant  or other provision,
will be deemed not to affect the rights under the New Mortgage of the Holders of
the Mortgage Bonds of any other series or tranche. (See Section 14.02.)
    

WAIVER

    The Holders of  at least  a majority in  aggregate principal  amount of  all
Mortgage  Bonds  may  waive the  Company's  obligations to  comply  with certain
covenants,  including  the  Company's  obligation  to  maintain  its   corporate
existence  and  properties,  pay  taxes and  discharge  liens,  maintain certain
insurance and to make  such recordings and filings  as are necessary to  protect
the security of the Holders and the rights of the New Mortgage Trustee, provided
that such waiver occurs before the time such compliance is required. The Holders
of at least a majority of the aggregate principal amount of Outstanding Mortgage
Bonds  of all affected series  or tranches, considered as  one class, may waive,
before the time for such compliance, compliance with the Company's obligation to
maintain an office or agency where the Mortgage Bonds of such series or tranches
may  be  surrendered  for  payment,  registration,  transfer  or  exchange,  and
compliance  with  any  other  covenant  specified  in  a  supplemental indenture
respecting such series or tranches. (See Section 6.09.)

EVENTS OF DEFAULT

    Each of the following events constitutes  an Event of Default under the  New
Mortgage:

        (1)  failure to pay interest  on any Mortgage Bond  within 60 days after
    the same becomes due;

        (2) failure to pay  principal or premium, if  any, on any Mortgage  Bond
    within 15 days after its Maturity;

        (3)  failure to  perform or  breach of any  covenant or  warranty of the
    Company in the New Mortgage (other than  a covenant or a warranty a  default
    in the performance of which or breach of which is dealt with elsewhere under
    this  paragraph) for a period  of 60 days after there  has been given to the
    Company by the New Mortgage Trustee, or to the Company and the New  Mortgage
    Trustee  by the Holders of  at least 50% in  principal amount of Outstanding
    Mortgage Bonds,  a written  notice  specifying such  default or  breach  and
    requiring  it to be  remedied and stating  that such notice  is a "Notice of
    Default," unless the New Mortgage Trustee,  or the New Mortgage Trustee  and
    the  Holders  of a  principal amount  of  Mortgage Bonds  not less  than the
    principal amount of Mortgage Bonds the Holders of which gave such notice, as
    the case may be, agree  in writing to an extension  of such period prior  to
    its expiration; provided, however, that the New Mortgage Trustee, or the New
    Mortgage  Trustee and such  Holders, as the  case may be,  will be deemed to
    have agreed to  an extension of  such period if  corrective action has  been
    initiated by the Company within such period and is being diligently pursued;

        (4) certain events relating to reorganization, bankruptcy and insolvency
    of the Company and appointment of a receiver or trustee for its property; or

        (5)  the occurrence of  a Matured Event  of Default under  any Class "A"
    Mortgage; provided that  the waiver  or cure of  any such  Matured Event  of
    Default  and the rescission and annulment  of the consequences thereof shall
    constitute a waiver  of the  corresponding Event  of Default  under the  New
    Mortgage  and a rescission  and annulment of  the consequences thereof. (See
    Section 10.01.)

REMEDIES

    If an  Event of  Default occurs  and is  continuing, then  the New  Mortgage
Trustee  or  the Holders  of not  less than  a majority  in principal  amount of
Mortgage Bonds then Outstanding may declare the principal

                                       29
<PAGE>
amount (or  if  the Mortgage  Bonds  are Discount  Bonds,  such portion  of  the
principal  amount as  may be  provided for such  Discount Bonds  pursuant to the
terms of the New Mortgage) of all  of the Mortgage Bonds together with  premium,
if any, and interest accrued, if any, thereon to be immediately due and payable.
At  any time after such  declaration of the maturity  of the Mortgage Bonds then
Outstanding, but before the sale of any  of the Mortgaged Property and before  a
judgment  or decree  for payment of  money shall  have been obtained  by the New
Mortgage Trustee as provided in the New Mortgage, the Event or Events of Default
giving rise to such  declaration of acceleration will,  without further act,  be
deemed  to have  been waived,  and such  declaration and  its consequences will,
without further act, be deemed to have been rescinded and annulled, if:

        (a) the Company has  paid or deposited with  the New Mortgage Trustee  a
    sum sufficient to pay:

           (1)  all  overdue  interest,  if  any,  on  all  Mortgage  Bonds then
       Outstanding;

           (2) the principal of and premium, if any, on any Mortgage Bonds  then
       Outstanding  which have become due otherwise  than by such declaration of
       acceleration and  interest  thereon  at  the  rate  or  rates  prescribed
       therefor in such Mortgage Bonds; and

           (3)  all amounts due to the  New Mortgage Trustee as compensation and
       reimbursement as provided in the New Mortgage; and

        (b) any other Event or Events  of Default other than the non-payment  of
    the  principal of Mortgage Bonds which shall  have become due solely by such
    declaration of acceleration, shall have been cured or waived as provided  in
    the New Mortgage. (See Sections 10.02 and 10.17.)

    The  New  Mortgage provides  that, under  certain  circumstances and  to the
extent permitted by law, if  an Event of Default  occurs and is continuing,  the
New  Mortgage Trustee has the power to  take possession of, and to hold, operate
and manage, the Mortgaged Property, or with or without entry, sell the Mortgaged
Property. If the Mortgaged Property is sold, whether by the New Mortgage Trustee
or pursuant to judicial proceedings,  the principal of the Outstanding  Mortgage
Bonds,  if  not  previously  due, will  become  immediately  due,  together with
premium, if  any, and  any  accrued interest.  (See  Sections 10.03,  10.04  and
10.05.)

    If  an Event of Default occurs and  is continuing, the Holders of a majority
in principal amount of the Mortgage  Bonds then Outstanding will have the  right
to  direct the  time, method  and place  of conducting  any proceedings  for any
remedy available to the  New Mortgage Trustee or  exercising any trust or  power
conferred on the New Mortgage Trustee, provided that (a) such direction does not
conflict  with any rule of  law or with the New  Mortgage, and could not involve
the New Mortgage Trustee in personal liability in circumstances where  indemnity
would  not, in the New Mortgage Trustee's sole discretion, be adequate, (b) such
direction is not unduly prejudicial to  the rights of the nonassenting  Holders,
and  (c) the New Mortgage Trustee may take any other action deemed proper by the
New Mortgage  Trustee  which is  not  inconsistent with  such  discretion.  (See
Section 10.16.)

    The  New Mortgage provides that no Holder of any Mortgage Bond will have any
right to institute any  proceeding, judicial or otherwise,  with respect to  the
New  Mortgage, or for the appointment of a receiver or trustee, or for any other
remedy thereunder,  unless (a)  such  Holder has  previously  given to  the  New
Mortgage  Trustee  written notice  of  a continuing  Event  of Default;  (b) the
Holders of  not  less than  a  majority in  aggregate  principal amount  of  the
Mortgage  Bonds then Outstanding  have made written request  to the New Mortgage
Trustee to institute proceedings  in respect of such  Event of Default and  have
offered   the  New  Mortgage  Trustee  reasonable  indemnity  against  cost  and
liabilities incurred in complying with such  request; and (c) for 60 days  after
receipt  of such notice,  the New Mortgage  Trustee has failed  to institute any
such proceeding and no direction inconsistent  with such request has been  given
to  the  New Mortgage  Trustee during  such 60-day  period by  the Holders  of a
majority in  aggregate  principal amount  of  Mortgage Bonds  then  Outstanding.
Furthermore,  no Holder will be entitled to  institute any such action if and to
the extent  that such  action would  disturb or  prejudice the  rights of  other
Holders.  (See Section  10.11.) Notwithstanding  that the  right of  a Holder to
institute a proceeding with  respect to the New  Mortgage is subject to  certain
conditions  precedent, each Holder  of a Mortgage  Bond has the  right, which is
absolute and unconditional, to receive payment of the principal of and  premium,
if    any,   and    interest,   if   any,    on   such    Mortgage   Bond   when

                                       30
<PAGE>
due and to  institute suit for  the enforcement  of any such  payment, and  such
rights  may not  be impaired  without the consent  of such  Holder. (See Section
10.12.) The New Mortgage provides that the New Mortgage Trustee give the Holders
notice of any default under the New Mortgage to the extent required by the Trust
Indenture Act, unless such default shall have been cured or waived, except  that
no  such notice to Holders of a  default of the character described in paragraph
(3) under "Events of Default"  shall be given until at  least 45 days after  the
occurrence  thereof.  (See Section  11.02.)  The Trust  Indenture  Act currently
permits the  New Mortgage  Trustee to  withhold notice  of default  (except  for
certain  payment defaults) if the New  Mortgage Trustee in good faith determines
the withholding of such notice to be in the interests of the Holders.

    As a condition precedent to certain  actions by the New Mortgage Trustee  in
the enforcement of the lien of the New Mortgage and institution of action on the
Mortgage  Bonds, the New Mortgage Trustee may require adequate indemnity against
costs, expense  and liabilities  to be  incurred in  connection therewith.  (See
Sections 10.11 and 11.01.)

    In  addition to every other  right and remedy provided  in the New Mortgage,
the New Mortgage Trustee may exercise any  right or remedy available to the  New
Mortgage  Trustee in  its capacity  as owner and  holder of  Pledged Bonds which
arises as a result of a default or Matured Event of Default under any Class  "A"
Mortgage,  whether or not  an Event of  Default under the  New Mortgage has then
occurred and is continuing. (See Section 10.20.)

DEFEASANCE

    Any Mortgage Bond or Bonds, or any portion of the principal amount  thereof,
will  be deemed  to have  been paid for  purposes of  the New  Mortgage, and the
entire indebtedness of  the Company in  respect thereof will  be deemed to  have
been  satisfied and discharged, if there has been irrevocably deposited with the
New Mortgage Trustee, in trust: (a) money (including Funded Cash) in the  amount
which  will be  sufficient, or  (b) Eligible  Obligations (as  described below),
which do not contain  provisions permitting the  redemption or other  prepayment
thereof  at the option of the issuer  thereof, the principal of and the interest
on which when  due, without  any regard  to reinvestment  thereof, will  provide
monies  which will be sufficient, or (c) a combination of (a) and (b) which will
be sufficient,  to pay  when  due the  principal of  and  premium, if  any,  and
interest,  if any,  due and  to become  due on  such Mortgage  Bond or  Bonds or
portions thereof. (See  Section 9.01.)  For this  purpose, Eligible  Obligations
include direct obligations of, or obligations unconditionally guaranteed by, the
United  States of America, entitled to the  benefit of the full faith and credit
thereof, and  certificates,  depositary  receipts  or  other  instruments  which
evidence  a direct  ownership interest  in such  obligations or  in any specific
interest or principal payments due in respect thereof.

    While there is no  legal precedent directly on  point, it is possible  that,
for  federal  income tax  purposes, any  deposit  contemplated in  the preceding
paragraph could be treated as a  taxable exchange of the related Mortgage  Bonds
for  an issue of obligations of  the trust or a direct  interest in the cash and
securities held in the trust. In that case, Holders of such Mortgage Bonds would
recognize gain or loss  as if the  trust obligations or  the cash or  securities
deposited,  as the case may  be, had actually been  received by them in exchange
for their Mortgage Bonds. Such Holders  thereafter would be required to  include
in  income a  share of  the income,  gain or  loss of  the trust.  The amount so
required to be included in income could be different from the amount that  would
be includible in the absence of such deposit. Prospective investors are urged to
consult  their own tax advisors as to  the specific consequences to them of such
deposit.

RESIGNATION OF THE NEW MORTGAGE TRUSTEE

    The New Mortgage  Trustee may resign  at any time  by giving written  notice
thereof  to the Company or may be removed at any time by Act of the Holders of a
majority in principal amount of Mortgage Bonds then Outstanding delivered to the
New Mortgage  Trustee and  the Company.  No resignation  or removal  of the  New
Mortgage Trustee and no appointment of a successor trustee will become effective
until  the acceptance of  appointment by a successor  trustee in accordance with
the requirements  of the  New Mortgage.  In addition,  so long  as no  Event  of
Default  or event which, after notice or lapse of time, or both, would become an
Event of Default has occurred and is continuing, under certain circumstances, if
the Company has delivered to the New Mortgage Trustee a resolution of its  Board
of Directors appointing a successor trustee

                                       31
<PAGE>
and such successor has accepted such appointment in accordance with the terms of
the  New Mortgage, the New Mortgage Trustee  will be deemed to have resigned and
the successor will  be deemed to  have been appointed  as trustee in  accordance
with the New Mortgage. (See Section 11.10.)

CONCERNING THE NEW MORTGAGE TRUSTEE

    The  Chase Manhattan  Bank (N.A.), the  Trustee under the  New Mortgage, has
been a regular depositary of funds of the Company. As trustee under both the New
Mortgage and the First  Mortgage, The Chase Manhattan  Bank (N.A.) would have  a
conflicting  interest for  purposes of  the Trust Indenture  Act if  an Event of
Default were to  occur under  either mortgage. In  that case,  the New  Mortgage
Trustee  may be  required to  eliminate such  conflicting interest  by resigning
either as New  Mortgage Trustee or  as First Mortgage  Trustee. There are  other
instances  under the Trust Indenture Act  which would require the resignation of
the New  Mortgage Trustee,  such as  an affiliate  of the  New Mortgage  Trustee
acting as underwriter with respect to any of the Mortgage Bonds.

TRANSFER

    The transfer of the Mortgage Bonds may be registered, and Mortgage Bonds may
be  exchanged  for other  Mortgage  Bonds of  the  same series  and  tranche, of
authorized denominations and of  like tenor and  aggregate principal amount,  at
the  office  of The  Chase  Manhattan Bank  (N.A.),  as Bond  Registrar  for the
Mortgage Bonds, in  Brooklyn, New  York. The Company  may change  the place  for
registration  of  transfer  of  the  Mortgage Bonds,  may  appoint  one  or more
additional Bond  Registrars (including  the  Company) and  may remove  any  Bond
Registrar,  all at its discretion. (See Section 6.02.) The applicable Prospectus
Supplement will  identify  any  new  place  for  registration  of  transfer  and
additional  Bond Registrar appointed, and will  disclose the removal of any Bond
Registrar effected, prior to the date  of such Prospectus Supplement. Except  as
otherwise  provided in the  applicable Prospectus Supplement,  no service charge
will be made for any transfer or exchange of the Mortgage Bonds, but the Company
may require payment of a sum sufficient  to cover any tax or other  governmental
charge  that may be imposed  in connection with any  registration of transfer or
exchange of the Mortgage Bonds. The Company  will not be required to issue,  and
no  Bond Registrar will be required to  register, the transfer of or to exchange
(a) Mortgage Bonds of any series (including the Mortgage Bonds) during a  period
of  15 days prior to  giving any notice of redemption,  or (b) any Mortgage Bond
selected for redemption in  whole or in part,  except the unredeemed portion  of
any Mortgage Bond being redeemed in part. (See Section 3.05.)

                DESCRIPTION OF THE SUBORDINATED DEBT SECURITIES

    The following description sets forth certain general terms and provisions of
the  Subordinated Debt Securities to which any Prospectus Supplement may relate.
The particular  terms  of  the  Subordinated  Debt  Securities  offered  by  any
Prospectus  Supplement and the extent,  if any, to which  such general terms and
provisions may apply  to the  Subordinated Debt  Securities so  offered will  be
described in the Prospectus Supplement relating to such Debt Securities.

   
    The  Subordinated Debt Securities may be issued, in one or more series, from
time to time  under an  Indenture dated  as of                      , 1995  (the
"Indenture"),  between the Company and The Chase Manhattan Bank N.A., as trustee
(the "Indenture Trustee"), which shall act as indenture trustee for the purposes
of the Trust Indenture  Act of 1939,  as amended. The form  of the Indenture  is
filed  as an  exhibit to the  Registration Statement. Capitalized  terms used in
this section which are not otherwise  defined in this Prospectus shall have  the
meanings set forth in the Indenture.
    

    The  following  summaries of  certain  provisions of  the  Subordinated Debt
Securities and the Indenture do not purport  to be complete and are subject  to,
and  are qualified in their entirety by  express reference to all the provisions
of the Indenture, including the definitions therein of certain terms.

GENERAL

    The Subordinated  Debt Securities  will be  direct, unsecured,  subordinated
obligations of the Company.

    The  Indenture does not limit the aggregate principal amount of Subordinated
Debt Securities that  may be  issued thereunder and  provides that  Subordinated
Debt Securities may be issued thereunder from time to

                                       32
<PAGE>
time in one or more series. The Subordinated Debt Securities are issuable in one
or  more  series pursuant  to  an indenture  supplement  to the  Indenture  or a
resolution of the Company's  Board of Directors or  a special committee  thereof
(each, a "Supplemental Indenture").

    The  Restated Certificate of Incorporation of the Company limits, subject to
certain exceptions, the amount  of unsecured indebtedness  that the Company  may
issue  or assume, without the consent of the  holders of a majority of the total
number of shares of preferred stock then outstanding, to 25% of the aggregate of
(i) the total  principal amount  of all  outstanding bonds  or other  securities
representing  secured indebtedness  of the  Company, and  (ii) the  total of the
capital stocks  and premiums  thereon and  the surplus  of the  Company as  then
stated  on the Company's books. At March 31, 1995, the Company could have issued
approximately $57 million  of unsecured indebtedness  (such as the  Subordinated
Debt Securities) without violating this provision.

   
    Reference  is made to the Prospectus Supplement relating to any Subordinated
Debt Securities  being offered  for,  among other  things, the  following  terms
thereof: (1) the title of the Subordinated Debt Securities; (2) any limit on the
aggregate  principal  amount  of  such  Subordinated  Debt  Securities;  (3) the
percentage of the principal  amount at which  such Subordinated Debt  Securities
will  be issued and, if other than  the principal amount thereof, the portion of
the principal amount thereof payable upon acceleration of the maturity  thereof,
or  the method by which such portion shall  be determined; (4) the date or dates
on which the principal of such Subordinated Debt Securities will be payable; (5)
the rights,  if any,  to defer  payments of  interest on  the Subordinated  Debt
Securities  by extending the  interest payment period, and  the duration of such
extensions; (6) the subordination terms  of the Subordinated Debt Securities  of
such  series; (7) the rate  or rates at which  such Subordinated Debt Securities
will bear  interest,  or  the method  by  which  such rate  or  rates  shall  be
determined,  and the date or dates from which such interest shall accrue, or the
method by which such date or dates  shall be determined; (8) the dates on  which
such  interest will  be payable  and the Regular  Record Dates  for any Interest
Payment Dates  and the  basis on  which interest  shall be  calculated; (9)  the
dates,  if any,  on which, the  price or  prices at which  the Subordinated Debt
Securities may, pursuant to any  mandatory or optional sinking fund  provisions,
be  redeemed by  the Company  and other  detailed terms  and provisions  of such
sinking funds; (10) the date,  if any, after which, and  the price or prices  at
which, the Subordinated Debt Securities may, pursuant to any optional redemption
provisions,  be redeemed at the option of  the Company or of the Holder thereof,
and other  detailed  terms and  provisions  of such  optional  redemption;  (11)
whether  and under what circumstances the Company will pay Additional Amounts as
contemplated by  Section  1005  of  the  Indenture  on  such  Subordinated  Debt
Securities  to  any Holder  who is  not  a United  States person  (including any
modification to the definition of such term as provided for in the Indenture  as
originally  executed) in respect  to any tax,  assessment or governmental charge
and, if so, whether the Company will have the option to redeem such Subordinated
Debt Securities rather than  pay such Additional Amounts  (and the terms of  any
such  option); (12)  any deletions  from, modifications  of or  additions to the
Events of Default or covenants of the Company with respect to such  Subordinated
Debt  Securities,  whether  or  not  such Events  of  Default  or  covenants are
consistent with the Events  of Default or covenants  set forth herein; (13)  any
security for such Subordinated Debt Securities; and (14) any other terms of such
Subordinated  Debt Securities. For a  description of the terms  of any series of
the Subordinated Debt Securities, reference must be made to both the  Prospectus
Supplement  relating  thereto  and  to  the  description  of  Subordinated  Debt
Securities set forth herein.
    

    Unless otherwise indicated  in the Prospectus  Supplement relating  thereto,
the  Subordinated Debt  Securities will  be issued  in United  States dollars in
fully registered form, without coupons, in denominations of $25 or any  integral
multiple thereof. No service charge will be made for any transfer or exchange of
the  Subordinated Debt Securities, but the Company  may require payment of a sum
sufficient to cover any tax or  other governmental charge payable in  connection
therewith.

    Unless  otherwise indicated  in the Prospectus  Supplement relating thereto,
the principal  of,  and  any  premium or  interest  on,  the  Subordinated  Debt
Securities  will  be  payable,  and the  Subordinated  Debt  Securities  will be
exchangeable and transfers thereof will be registrable, at the Place of Payment;
provided 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 it appears in the
Security Register.

                                       33
<PAGE>
    The Indenture does not contain any provisions that may afford the Holders of
Subordinated  Debt  Securities protection  in the  event  of a  highly leveraged
transaction or  other  transaction  involving  the Company  that  may  occur  in
connection  with a takeover attempt resulting in  a decline in the credit rating
of the Subordinated  Debt Securities. The  Indenture also does  not contain  any
provisions that would limit the ability of the Company to incur indebtedness.

REGISTRATION AND TRANSFER

    Subordinated  Debt Securities  will be  issued as  Registered Securities and
either will be in certificated form or will be represented by Global Securities.
Registered Securities  will be  issuable in  denominations of  $25 and  integral
multiples  of $25 or in such  other denominations as may be  in the terms of the
Subordinated Debt Securities.

    Registered Securities will be  exchangeable for other Registered  Securities
of  the  same series  and  of a  like aggregate  principal  amount and  tenor of
different authorized denominations. Registered  Securities may be presented  for
registration  of transfer (duly endorsed or  accompanied by a written instrument
of transfer), at  the corporate  trust office of  the Indenture  Trustee in  New
York, New York, or at the office of any transfer agent designated by the Company
for  such purpose with respect to any series of Subordinated Debt Securities and
referred to in any Prospectus Supplement. No service charge will be made for any
transfer or  exchange  of Subordinated  Debt  Securities, but  the  Company  may
require  payment of  a sum  sufficient to  cover any  tax or  other governmental
charge payable in connection therewith.  If any Prospectus Supplement refers  to
any  transfer agent (in addition to  the Indenture Trustee) initially designated
by the Company with respect to  any series of Subordinated Debt Securities,  the
Company  may at any time  rescind the designation of  any such transfer agent or
approve a change in the location at  which any such transfer agent acts,  except
that,  if  Subordinated  Debt Securities  of  a  series are  issuable  solely as
Registered Securities, the Company will be required to maintain a transfer agent
in each Place of Payment for such series. The Company may at any time  designate
additional  transfer  agents with  respect to  any  series of  Subordinated Debt
Securities.

    In the event  of any  redemption of  any Subordinated  Debt Securities,  the
Company  shall  not be  required  to: (i)  issue,  register the  transfer  of or
exchange any  Subordinated Debt  Securities  during a  period beginning  at  the
opening of business 15 days before any selection of Subordinated Debt Securities
of  that series to be redeemed and ending at the close of business on the day of
mailing of the relevant notice of  redemption; (ii) register the transfer of  or
exchange  any  Subordinated  Debt  Securities, or  portion  thereof,  called for
redemption, except  the unredeemed  portion of  any Subordinated  Debt  Security
being redeemed in part; or (iii) issue, register the transfer of or exchange any
Subordinated  Debt Securities  that has  been surrendered  for repayment  at the
option of the Holder, except the portion if any, thereof not to be so repaid.

GLOBAL SECURITIES

    The Subordinated Debt Securities of  a series may be  issued in whole or  in
part  in the  form of  one or more  Global Securities  (as such  term is defined
below), which  will  be deposited  with,  or on  behalf  of, a  depositary  (the
"Depositary") or its nominee identified in the applicable Prospectus Supplement.
In  such case, one or more Global Securities will be issued in a denomination or
aggregate denomination equal to the portion of the aggregate principal amount of
outstanding Subordinated Debt Securities of the series to be represented by such
Global Security or Global Securities. Unless and until it is exchanged in  whole
or  in  part  for Subordinated  Debt  Securities  in registered  form,  a Global
Security may not be registered for transfer or exchange except as (i) a whole by
the Depositary for such Global  Security to a nominee  of such Depositary, by  a
nominee  of  such  Depositary to  such  Depositary  or another  nominee  of such
Depositary or by such Depositary, or by any nominee to a successor Depositary or
a nominee of such successor Depositary, and (ii) in the circumstances  described
in  the applicable Prospectus Supplement. The  term "Global Security," when used
with respect  to  any series  of  Subordinated  Debt Securities,  means  a  Debt
Security  that is executed by the Company and authenticated and delivered by the
Indenture Trustee to the Depositary or pursuant to the Depositary's instruction,
which shall be registered in the name of the Depositary or its nominee and which
shall represent, and shall  be denominated in an  amount equal to the  aggregate
principal amount of, all

                                       34
<PAGE>
of  the Outstanding Subordinated  Debt Securities of such  series or any portion
thereof, in either case  having the same  terms, including, without  limitation,
the  same original  issue date,  date or  dates on  which principal  is due, and
interest rate or method of determining the interest rate.

    The specific terms of the depositary arrangement with respect to any portion
of a  series of  Subordinated Debt  Securities  to be  represented by  a  Global
Security  will be described in the applicable Prospectus Supplement. The Company
expects that the following provisions will apply to depositary arrangements.

    Unless  otherwise  specified  in   the  applicable  Prospectus   Supplement,
Subordinated  Debt Securities that are to be represented by a Global Security to
be deposited with or on behalf of  a Depositary will be represented by a  Global
Security  registered in  the name  of such Depositary  or its  nominee. Upon the
issuance of such Global Security, and  the deposit of such Global Security  with
or  on behalf of  the Depositary for  such Global Security,  the Depositary will
credit on  its  book-entry  registration  and  transfer  system  the  respective
principal amounts of the Subordinated Debt Securities represented by such Global
Security to the accounts of institutions that have accounts with such Depositary
or  its nominee ("participants"). The accounts to be credited will be designated
by the underwriters or agents of  such Subordinated Debt Securities or, if  such
Subordinated  Debt Securities are  offered and sold directly  by the Company, by
the Company. Ownership of beneficial interests  in such Global Security will  be
limited to participants or persons that may hold interests through participants.
Ownership  of beneficial interests by participants  in such Global Security will
be shown on, and the transfer of  that ownership interest will be effected  only
through,  records maintained  by the Depositary  or its nominee  for such Global
Security. Ownership of beneficial interests  in such Global Security by  persons
that  hold  through participants  will be  shown  on, and  the transfer  of that
ownership interest  within  such  participant will  be  effected  only  through,
records  maintained by such participant. The  laws of some jurisdictions require
that certain purchasers of securities take physical delivery of such  securities
in  certificated form.  The foregoing limitations  and such laws  may impair the
ability to transfer beneficial interests in such Global Securities.

    So long as  the Depositary for  a Global  Security, or its  nominee, is  the
registered  owner of such  Global Security, such Depositary  or such nominee, as
the case may be, will be considered the sole owner or Holder of the Subordinated
Debt Securities represented by such Global  Security for all purposes under  the
Indenture.  Unless otherwise specified in  the applicable Prospectus Supplement,
owners of beneficial interests in such  Global Security will not be entitled  to
have  Subordinated  Debt Securities  of the  series  represented by  such Global
Security registered in their names, will  not receive or be entitled to  receive
physical delivery of Subordinated Debt Securities of such series in certificated
form  and will not be considered the  Holders thereof for any purposes under the
Indenture. Accordingly, each person owning a beneficial interest in such  Global
Security  must rely on the  procedures of the Depositary  and, if such person is
not a  participant, on  the procedures  of the  participant through  which  such
person owns its interest to exercise any rights of a Holder under the Indenture.
The  Company understands that under existing  industry practices, if the Company
requests any action  of Holders or  an owner  of a beneficial  interest in  such
Global  Security  desires to  give any  notice or  take any  action a  Holder is
entitled to  give  or  take  under the  Indenture,  then  the  Depositary  would
authorize  the  participants  to  give  such notice  or  take  such  action, and
participants would authorize beneficial owners owning through such  participants
to  give  such  notice or  take  such action  or  would otherwise  act  upon the
instructions of beneficial owners owning through them.

    Principal of  and any  premium and  interest on  a Global  Security will  be
payable in the manner described in the applicable Prospectus Supplement.

CONSOLIDATION, MERGER AND SALE

    The  Indenture does not  contain any covenant  which restricts the Company's
ability to merge  or consolidate  with or into  any other  corporation, sell  or
convey all or substantially all of its assets to any person, firm or corporation
or otherwise engage in restructuring transactions.

EVENTS OF DEFAULT

    The  Indenture provides,  with respect  to any  series of  Subordinated Debt
Securities outstanding thereunder, that any one or more of the following  events
that has occurred and is continuing shall constitute an

                                       35
<PAGE>
Event  of  Default: (i)  default  in the  payment of  any  interest upon  or any
Additional Amounts payable in respect of any Subordinated Debt Security of  that
series,  or of any  coupon appertaining thereto,  when the same  becomes due and
payable and continues for 30 days; provided, however, that, a valid extension of
the interest payment period by the Company for the Subordinated Debt  Securities
shall  not constitute a default in the payment of interest for this purpose, and
provided further that,  if Subordinated  Debt Securities  are issued  to a  NWPS
Trust,  or a  trustee of such  trust, in  connection with the  issuance of Trust
Securities by such NWPS Trust, said 30-day period will be replaced by a  ten-day
period;  (ii) default in the  payment of the principal of  or any premium on any
Subordinated Debt Security of  that series when due,  whether at maturity,  upon
redemption,  by  declaration  or  otherwise; provided,  however,  that,  a valid
extension of  the  maturity  of  the  Subordinated  Debt  Securities  shall  not
constitute  a default  for this  purpose; (iii)  default in  the deposit  of any
sinking fund payment,  when and as  due by  the terms of  any Subordinated  Debt
Securities  of that  series; (iv)  default in the  performance or  breach of any
covenant or  agreement of  the Company  in  the Indenture  with respect  to  any
Subordinated  Debt Security of that series,  continued for 60 days after written
notice to the Company from the Indenture Trustee or from the holders of at least
25% of the outstanding Subordinated Debt Securities of that series; (v)  certain
events  in bankruptcy,  insolvency or  reorganization of  the Company;  (vi) the
voluntary or involuntary dissolution, winding-up or termination of a NWPS  Trust
to  which (or to a trustee of  such trust to which) Subordinated Debt Securities
were issued in  connection with the  issuance of Trust  Securities by such  NWPS
Trust,   except  in  connection  with  the  distribution  of  Subordinated  Debt
Securities to the holders of Trust Securities in liquidation of such NWPS Trust,
the redemption of all  of the Trust  Securities of such  NWPS Trust, or  certain
mergers,  consolidations or amalgamations, each  as permitted by the Declaration
of such NWPS Trust; and (vii) any  other Event of Default provided with  respect
to  Subordinated Debt Securities of that series. The Company is required to file
annually with the Indenture Trustee an officer's certificate as to the Company's
compliance with all conditions and covenants under the Indenture. The  Indenture
provides  that  the Indenture  Trustee  may withhold  notice  to the  Holders of
Subordinated Debt Securities of any default, except in the case of a default  on
the  payment  of the  principal  of (or  premium), if  any,  or interest  on any
Subordinated Debt Securities or the payment of any sinking fund installment with
respect to such Subordinated Debt Securities if it considers it in the  interest
of the Holders of Subordinated Debt Securities to do so.

    If  an  Event  of  Default,  other  than  certain  events  with  respect  to
bankruptcy, insolvency  and reorganization  of the  Company or  any  Significant
Subsidiary,   occurs  and  is  continuing  with  respect  to  Subordinated  Debt
Securities of a particular series, the  Indenture Trustee or the Holders of  not
less than 25% in principal amount of Outstanding Subordinated Debt Securities of
that  series may  declare the Outstanding  Subordinated Debt  Securities of that
series due  and payable  immediately. If  an Event  of Default  with respect  to
certain events of bankruptcy, insolvency or reorganization of the Company or any
Significant  Subsidiary  with  respect  to  Subordinated  Debt  Securities  of a
particular series shall occur and be  continuing, then the principal of all  the
Outstanding  Subordinated Debt Securities of that series, and accrued and unpaid
interest thereon, shall automatically be due and payable without any act on  the
part of the Indenture Trustee or any Holder.

    Subject  to the provisions relating to  the duties of the Indenture Trustee,
if an  Event  of Default  with  respect to  Subordinated  Debt Securities  of  a
particular series occurs and is continuing, the Indenture Trustee shall be under
no obligation to exercise any of its rights or powers under the Indenture at the
request  or direction of any  of the Holders of  Subordinated Debt Securities of
such series, unless  such Holders shall  have offered to  the Indenture  Trustee
reasonable  indemnity and security  against the costs,  expenses and liabilities
that might be incurred by  it in compliance with  such request. Subject to  such
provisions  for the indemnification  of the Indenture Trustee,  the Holders of a
majority in principal amount of the Outstanding Subordinated Debt Securities  of
such  series  shall have  the  right to  direct the  time,  method and  place of
conducting any  proceeding for  any remedy  available to  the Indenture  Trustee
under the Indenture, or exercising any trust or power conferred on the Indenture
Trustee  with respect  to the Subordinated  Debt Securities of  that series. The
Indenture Trustee may refuse  to follow directions in  conflict with law or  the
Indenture that may involve the Indenture Trustee in personal liability or may be
unduly prejudicial to Holders not joining therein.

                                       36
<PAGE>
    The  Holders  of  not  less  than a  majority  in  principal  amount  of the
Outstanding Subordinated Debt  Securities of any  series may, on  behalf of  the
Holders  of all the Subordinated Debt Securities  of such series and any related
coupons, waive any past default under the Indenture with respect to such  series
and  its consequences, except a  default (i) in the  payment of the principal of
(or premium, if any) or interest on or Additional Amounts payable in respect  of
any Subordinated Debt Security of such series unless such default has been cured
and  a sum sufficient to pay all  matured installments of interest and principal
due otherwise than by acceleration and any applicable premium has been deposited
with the Indenture Trustee or  (ii) in respect of  a covenant or provision  that
cannot  be  modified  or amended  without  the  consent of  the  Holder  of each
Outstanding Subordinated Debt Security of such series affected thereby.

MODIFICATION OR WAIVER

   
    Modification and amendment of the Indenture  may be made by the Company  and
the  Indenture  Trustee with  the  consent of  the Holders  of  not less  than a
majority in principal amount of all Outstanding Subordinated Debt Securities  or
any  series that are affected by  such modification or amendment; provided that,
no such modification or amendment may, without the consent of the Holder of each
Outstanding Subordinated Debt Security of  such series, among other things,  (i)
change  the Stated Maturity of the principal of  (or premium, if any, on) or any
installment of principal  of or interest  on any Subordinated  Debt Security  of
such  series, (ii) reduce the principal amount or the rate of interest on or any
Additional Amounts  payable in  respect  of, or  any  premium payable  upon  the
redemption  of, any  Subordinated Debt  Security of  such series,  or change the
redemption provisions  of  any Subordinated  Debt  Securities (iii)  change  any
obligation  of  the  Company  to  pay  Additional  Amounts  in  respect  of  any
Subordinated Debt Security of such series,  (iv) reduce the amount of  principal
of  a  Subordinated Debt  Security  of such  series  that is  an  Original Issue
Discount  Security  and  would  be  due  and  payable  upon  a  declaration   of
acceleration  of  the  Maturity  thereof,  (v)  adversely  affect  any  right of
repayment at the option of the Holder of any Subordinated Debt Security of  such
series,  (vi) change the  place or currency  of payment of  principal of, or any
premium or interest  on, any Subordinated  Debt Security of  such series,  (vii)
impair the right to institute suit for the enforcement of any such payment on or
after  the  Stated Maturity  thereof or  any Redemption  Date or  Repayment Date
therefor, (viii) reduce  the above-stated percentage  of Holders of  Outstanding
Subordinated  Debt Securities  of such series  necessary to modify  or amend the
Indenture or to consent to any waiver thereunder or reduce the requirements  for
voting  or quorum described below, (ix) modify the change of control provisions,
if any, or  (x) modify the  foregoing requirements or  reduce the percentage  of
Outstanding  Subordinated Debt Securities of such  series necessary to waive any
past default.
    

   
    Modification and amendment of the Indenture  may be made by the Company  and
the  Indenture  Trustee  without the  consent  of  any Holder,  for  any  of the
following purposes: (i)  to evidence  the succession  of another  person to  the
Company  as obligor  under the Indenture;  (ii) to  add to the  covenants of the
Company for the benefit of the Holders of all or any series of Subordinated Debt
Securities; (iii) to add Events of Default for the benefit of the Holders of all
or any series of Subordinated Debt  Securities; (iv) to change or eliminate  any
provisions  of the Indenture, provided that any such change or elimination shall
become effective only when there are no Outstanding Subordinated Debt Securities
of any series created  prior thereto that  are entitled to  the benefit of  such
provision; (v) to establish the form or terms of Subordinated Debt Securities of
any  series; (vi) to  secure the Subordinated Debt  Securities; (vii) to provide
for the acceptance of appointment by a successor Indenture Trustee or facilitate
the administration of the trusts under the Indenture by more than one  Indenture
Trustee;  and (viii) to  close the Indenture with  respect to the authentication
and delivery of additional  series of Subordinated Debt  Securities, or to  cure
any  ambiguity, defect or  inconsistency in the  Indenture, provided such action
does  not  adversely  affect  the  interest  of  Holders  of  Subordinated  Debt
Securities of any series.
    

CERTAIN COVENANTS

    If  Subordinated Debt Securities are issued to  a NWPS Trust or a trustee of
such trust in  connection with  the issuance of  Trust Securities  by such  NWPS
Trust and (i) there shall have occurred any event that would constitute an Event
of  Default or (ii) the Company shall be  in default with respect to its payment
of any obligations under the  related Guarantee or Common Securities  Guarantee,
then  (a)  the  Company  shall  not  declare or  pay  dividends  on,  or  make a
distribution with  respect  to  or  redeem,  purchase  or  acquire,  or  make  a

                                       37
<PAGE>
liquidation  payment with  respect to,  any of  its capital  stock, and  (b) the
Company shall not make any payment of interest, principal or premium, if any, on
or repay, repurchase or  redeem any debt securities  issued by the Company  that
rank  pari passu with or junior  to such Subordinated Debt Securities; provided,
however, that, restriction (a) above does not apply to any stock dividends  paid
by  the Company where the dividend stock is  the same stock as that on which the
dividend is being paid.

    If Subordinated Debt Securities are issued to  a NWPS Trust or a trustee  of
such  trust in  connection with  the issuance of  Trust Securities  by such NWPS
Trust, and the Company shall have given notice of its election to defer payments
of interest  on such  Subordinated  Debt Securities  by extending  the  interest
payment  period as provided in  the Indenture and such  period, or any extension
thereof, shall  be continuing  then (a)  the Company  shall not  declare or  pay
dividends  on, or  make a  distribution with respect  to or  redeem, purchase or
acquire, or  make a  liquidation payment  with respect  to, any  of its  capital
stock,  and (b) the Company shall not make any payment of interest, principal or
premium, if any, on or repay, repurchase or redeem any debt securities issued by
the Company  that rank  pari passu  with  or junior  to such  Subordinated  Debt
Securities; provided, however, that, the restriction (a) above does not apply to
any stock dividends paid by the Company, where the dividend stock is the same as
that on which the dividend is being paid.

    If  Subordinated Debt Securities are issued to  a NWPS Trust or a trustee of
such trust in  connection with  the issuance of  Trust Securities  by such  NWPS
Trust, for so long as such Trust Securities remain outstanding, the Company will
covenant  (i) to  directly or indirectly  maintain 100% ownership  of the Common
Securities of such NWPS Trust;  provided, however, that any permitted  successor
of  the Company under  the Indenture may  succeed to the  Company's ownership of
such Common Securities and (ii) to use its reasonable efforts to cause such NWPS
Trust (a) to remain  a statutory business trust,  except in connection with  the
distribution  of Subordinated Debt Securities to the holders of Trust Securities
in liquidation of such NWPS Trust, the redemption of all of the Trust Securities
of such NWPS Trust, or certain mergers, consolidations or amalgamations, each as
permitted by the Declaration of such  NWPS Trust, and (b) to otherwise  continue
to  be  classified as  a  grantor trust  for  United States  federal  income tax
purposes.

SECURITY AND SUBORDINATION

    Any security for the Subordinated Debt  Securities will be described in  the
Prospectus Supplement that will accompany this Prospectus. The Subordinated Debt
Securities  will be subordinated and junior in right of payment to certain other
indebtedness of the Company to the extent set forth in the Prospectus Supplement
that will accompany this Prospectus.

GOVERNING LAW

    The Indenture and the Subordinated Debt Securities will be governed by,  and
construed in accordance with, the internal laws of the State of New York.

INFORMATION CONCERNING THE INDENTURE TRUSTEE

    The  Indenture Trustee,  prior to default,  undertakes to  perform only such
duties as are specifically set forth in the Indenture and, after default,  shall
exercise  the same degree of care as  a prudent individual would exercise in the
conduct of his  or her  own affairs. Subject  to such  provision, the  Indenture
Trustee is under no obligation to exercise any of the powers vested in it by the
Indenture  at the request of any  holder of Subordinated Debt Securities, unless
offered reasonable  indemnity by  such holder  against the  costs, expenses  and
liabilities  that  might  be  incurred thereby.  The  Indenture  Trustee  is not
required to expand or risk its  own funds or otherwise incur personal  financial
liability  in the performance of its  duties if the Indenture Trustee reasonably
believes that repayment or adequate indemnity is not reasonably assured to it.

DEFEASANCE

   
    The Indenture provides  that, except as  may be provided  in respect of  any
series of Subordinated Debt Securities, the provisions of Article Fourteen shall
apply  to the  Subordinated Debt  Securities of any  series and  the Company may
elect either to  (a) except in  respect of any  Subordinated Debt Securities  to
which  a NWPS Trust  or a trustee  of such trust  is the holder,  defease and be
discharged from any and all obligations  with respect to such Subordinated  Debt
Securities  (except for the obligation  to pay Additional Amounts,  if any, to a
holder who is not a United States  person upon the occurrence of certain  events
of tax, assessment or
    

                                       38
<PAGE>
governmental   charge  with  respect  to  payments  on  such  Subordinated  Debt
Securities and the  obligations to  register the  transfer or  exchange of  such
Subordinated Debt Securities, to replace temporary or mutilated, destroyed, lost
or  stolen  Subordinated Debt  Securities, to  maintain an  office or  agency in
respect of such Subordinated Debt Securities, and to hold moneys for payment  in
trust)  ("Defeasance") or (b)  be released from its  obligations with respect to
such Subordinated Debt Securities under Section 1402 or, if provided pursuant to
Section 1403  of  the Indenture,  its  obligations  with respect  to  any  other
covenant,  and any omission to comply with such obligations shall not constitute
a default  or  an  Event of  Default  with  respect to  such  Subordinated  Debt
Securities ("covenant defeasance"), in either case, upon the irrevocable deposit
by  the Company  with the  Indenture Trustee  (or other  qualifying trustee), in
trust, of an amount, in such Currency in which such Subordinated Debt Securities
are then specified as payable at Stated Maturity, or Government Obligations  (as
defined  below), or both, applicable to  such Subordinated Debt Securities (with
such applicability being determined on the basis of the currency, currency  unit
or  composite  currency  in which  such  Subordinated Debt  Securities  are then
specified as payable at Stated Maturity) which through the scheduled payment  of
principal  and interest in accordance with their  terms will provide money in an
amount sufficient to pay the principal of (and premium, if any) and interest, if
any, on such  Subordinated Debt Securities,  and any mandatory  sinking fund  or
analogous payments thereon, on the scheduled due dates therefor.

    Such a trust may only be established if, among other things, the Company has
delivered  to the Indenture Trustee  an Opinion of Counsel  (as specified in the
Indenture) to the effect that the  Holders of such Subordinated Debt  Securities
will  not recognize income,  gain or loss  for United States  federal income tax
purposes as  a result  of such  defeasance or  covenant defeasance  and will  be
subject  to United States  federal income tax  on the same  amounts, in the same
manner and at the same times as would  have been the case if such defeasance  or
covenant defeasance had not occurred; provided that, such Opinion of Counsel, in
the case of defeasance under clause (a) above, must refer to and be based upon a
revenue  ruling of the Internal Revenue Service or a change in applicable United
States federal income tax law occurring after the date of the Indenture.

    "Government Obligations" means securities that are (i) direct obligations of
the  government  that  issued  the  Currency  in  which  the  Subordinated  Debt
Securities of a particular series are payable, for the payment of which its full
faith  and credit  is pledged,  or (ii)  obligations of  a person  controlled or
supervised by and acting as an agency or instrumentality of the government  that
issued the Currency in which the Subordinated Debt Securities of such series are
payable,  the payment of which is unconditionally guaranteed as a full faith and
credit obligation by  the United  States of  America or  such other  government,
which,  in either  case, are  not callable  or redeemable  at the  option of the
issuer thereof, and shall also include a depository receipt issued by a bank  or
trust  company as custodian with respect to  any such Government Obligation or a
specific payment of interest on or  principal of any such Government  Obligation
held  by such custodian for  the account of the  holder of a depository receipt;
provided that (except as  required by law) such  custodian is not authorized  to
make  any deduction  from the  amount payable to  the holder  of such depository
receipt from any amount received by  the custodian in respect of the  Government
Obligation or the specific payment of interest in or principal of the Government
Obligation evidenced by such depository receipt.

    Unless  otherwise  provided  in  the Prospectus  Supplement,  if,  after the
Company has deposited funds and/or  Government Obligations to effect  defeasance
or  covenant  defeasance  relating  thereto with  respect  to  Subordinated Debt
Securities of any series, (a) the Holder of a Subordinated Debt Security of such
series is entitled to and does elect, pursuant to the terms of such Subordinated
Debt Security, to receive payment  in a currency other  than that in which  such
deposit  has been made in respect of  such Subordinated Debt Security or (b) the
currency in which such deposit has been made in respect of any Subordinated Debt
Security of such series ceases  to be used by  its government of issuance,  then
the  indebtedness represented by such Subordinated Debt Security shall be deemed
to have been, and will be, fully discharged and satisfied through the payment of
the  principal  of  (and  premium,  if  any)  and  interest,  if  any,  on  such
Subordinated  Debt Security as  they become due  out of the  proceeds yielded by
converting the amount so deposited in respect of such Subordinated Debt Security
into  the   Currency  in   which  such   Subordinated  Debt   Security   becomes

                                       39
<PAGE>
payable  as a result  of such election or  such cessation of  usage based on the
applicable Market Exchange  Rate. Unless  otherwise provided  in the  Prospectus
Supplement,  all payments of principal of (and premium, if any) and interest, if
any, and Additional Amounts, if any,  on any Subordinated Debt Security that  is
payable  in  a Foreign  Currency that  ceases to  be used  by its  government of
issuance shall be made in U. S. Dollars.

   
    In the event the Company effects covenant defeasance with respect to (i) any
Subordinated Debt Securities and any related coupons and (ii) such  Subordinated
Debt  Securities are declared due  and payable because of  the occurrence of any
Event of Default, other than the Event  of Default described in clause (iii)  or
(v)  under "Events of Default," with respect to any covenant for which there has
been defeasance, the Currency and/or Government Obligations on deposit with  the
Indenture  Trustee will  be sufficient to  pay amounts due  on such Subordinated
Debt Securities at the time of their  Stated Maturity but may not be  sufficient
to  pay amounts  due on  such Subordinated  Debt Securities  at the  time of the
acceleration resulting from such  Event of Default.  However, the Company  would
remain liable to make payment of such amounts due at the time of acceleration.
    

    The  Prospectus  Supplement may  further  describe the  provisions,  if any,
permitting such defeasance or  covenant defeasance, including any  modifications
to  the  provisions  described  above, with  respect  to  the  Subordinated Debt
Securities of or within a particular series and any related coupons.

MISCELLANEOUS

    The Company will have the right at all times to assign any of its respective
rights or obligations under the Indenture  to a direct or indirect  wholly-owned
subsidiary  of the Company; provided, that, in the event of any such assignment,
the Company will remain liable for all of their respective obligations.  Subject
to the foregoing, the Indenture will be binding upon and inure to the benefit of
the  parties thereto and their respective  successors and assigns. The Indenture
provides that it may not otherwise be assigned by the parties thereto.

                    DESCRIPTION OF THE PREFERRED SECURITIES

    Each NWPS Trust may issue, from time  to time, only one series of  Preferred
Securities having terms described in the Prospectus Supplement relating thereto.
The  Declaration of each NWPS Trust authorizes the Regular Trustees of such NWPS
Trust to issue on behalf of such NWPS Trust one series of Preferred  Securities.
The Declaration will be qualified as an indenture under the Trust Indenture Act.
The   Preferred  Securities  will  have  such  terms,  including  distributions,
redemption, voting, liquidation  rights and  such other  preferred, deferred  or
other  special  rights  or  such  restrictions as  shall  be  set  forth  in the
Declaration or made part of the Declaration by the Trust Indenture Act.

    Reference is made  to the  Prospectus Supplement relating  to the  Preferred
Securities  of a  NWPS Trust for  specific terms, including  (i) the distinctive
designation  of  such  Preferred  Securities,  (ii)  the  number  of   Preferred
Securities  issued by  such NWPS Trust,  (iii) the annual  distribution rate (or
method of determining such  rate) for Preferred Securities  issued by such  NWPS
Trust  and the  date or  dates upon  which such  distributions shall  be payable
(provided, however, that,  distributions on such  Preferred Securities shall  be
payable  on a quarterly  basis to holders  of such Preferred  Securities as of a
record  date  in  each  quarter  during  which  such  Preferred  Securities  are
outstanding),  (iv) whether distributions on Preferred Securities issued by such
NWPS Trust shall be cumulative, and, in the case of Preferred Securities  having
such  cumulative distribution rights, the date or dates or method of determining
the date or  dates from which  distributions on Preferred  Securities issued  by
such  NWPS Trust shall be  cumulative, (v) the amount  or amounts which shall be
paid out of the assets of such NWPS Trust to the holders of Preferred Securities
of such  NWPS Trust  upon voluntary  or involuntary  dissolution, winding-up  or
termination  of such NWPS Trust, (vi) the obligation, if any, of such NWPS Trust
to purchase or  redeem Preferred Securities  issued by such  NWPS Trust and  the
price  or prices at which, the period or  periods within which and the terms and
conditions upon which Preferred  Securities issued by such  NWPS Trust shall  be
purchased  or redeemed, in whole or in  part, pursuant to such obligation, (vii)
the voting rights, if any, of Preferred Securities issued by such NWPS Trust  in
addition  to those required by law, including  the number of votes per Preferred
Security and any

                                       40
<PAGE>
requirement for  the approval  by the  holders of  Preferred Securities,  or  of
Preferred  Securities  issued  by one  or  more NWPS  Trusts  or of  both,  as a
condition to specified  action or  amendments to  the Declaration  of such  NWPS
Trust,   and  (viii)   any  other  relevant   rights,  preferences,  privileges,
limitations or restrictions of  Preferred Securities issued  by such NWPS  Trust
consistent  with the Declaration of such NWPS Trust, or with applicable law. All
Preferred Securities offered  hereby will be  guaranteed by the  Company to  the
extent  set forth  below under "Description  of the  Guarantees." Certain United
States federal income tax considerations applicable to any offering of Preferred
Securities will be described in the Prospectus Supplement relating thereto.

    In connection with  the issuance  of Preferred Securities,  each NWPS  Trust
will  issue one series of Common Securities.  The Declaration of each NWPS Trust
authorizes the Regular Trustees of  each trust to issue  on behalf of such  NWPS
Trust one series of Common Securities having such terms including distributions,
redemption,  voting, liquidation  rights or  such restrictions  as shall  be set
forth therein. The terms of the Common Securities issued by a NWPS Trust will be
substantially identical to the terms of the Preferred Securities issued by  such
NWPS  Trust and the Common Securities will rank pari passu, and payments will be
made thereon pro rata with the  Preferred Securities except that, upon an  event
of  default  under the  Declaration, the  rights  of the  holders of  the Common
Securities to payment in respect of distributions and payments upon liquidation,
redemption and otherwise will  be subordinated to the  rights of the holders  of
the  Preferred Securities. Except  in certain limited  circumstances, the Common
Securities will also carry the right to  vote and to appoint, remove or  replace
any of the NWPS Trustees of a NWPS Trust. All of the Common Securities of a NWPS
Trust will be directly or indirectly owned by the Company.

                         DESCRIPTION OF THE GUARANTEES

    Set  forth below is a summary  of information concerning the Guarantees that
will be executed and delivered  by the Company for  the benefit of the  holders,
from  time to time, of Preferred Securities. Each Guarantee will be qualified as
an indenture under the Trust Indenture Act. Wilmington Trust Company will act as
indenture trustee under each Guarantee  (the "Guarantee Trustee"). The terms  of
each  Guarantee will be those set forth in each Guarantee and those made part of
each Guarantee by the Trust  Indenture Act. The summary  does not purport to  be
complete  and is subject in all respects  to the provisions of, and is qualified
in its entirety by  reference to, the  form of Guarantee, which  is filed as  an
exhibit to the Registration Statement of which this Prospectus forms a part, and
the  Trust Indenture Act. Each  Guarantee will be held  by the Guarantee Trustee
for the benefit  of the holders  of the Preferred  Securities of the  applicable
NWPS Trust.

GENERAL

   
    Pursuant to each Guarantee, the Company will irrevocably and unconditionally
agree,  to the extent  set forth herein,  to pay in  full to the  holders of the
Preferred Securities issued by a NWPS Trust, the Guarantee Payments (as  defined
herein)  (except  to the  extent  paid by  such NWPS  Trust),  as and  when due,
regardless of any  defense, right  of set-off  or counterclaim  which such  NWPS
Trust  may  have or  assert. The  following payments  with respect  to Preferred
Securities issued by a NWPS Trust (the "Guarantee Payments"), to the extent  not
paid  by such NWPS Trust will be subject to the Guarantee (without duplication):
(i) any accrued and unpaid  distributions that are required  to be paid on  such
Preferred  Securities, to the extent the Company  has made a payment of interest
or principal on  the Subordinated  Debt Securities, (ii)  the redemption  price,
including  all accrued and  unpaid distributions to the  date of redemption (the
"Redemption Price"), to the extent the Company has made a payment of interest or
principal on the  Subordinated Debt  Securities, with respect  to any  Preferred
Securities  called for redemption by such NWPS Trust, and (iii) upon a voluntary
or involuntary dissolution, winding-up or termination of such NWPS Trust  (other
than  in connection with the distribution of Subordinated Debt Securities to the
holders of  Preferred Securities  or  the redemption  of  all of  the  Preferred
Securities  upon the maturity or redemption of the Subordinated Debt Securities)
the lesser of (a) the  aggregate of the liquidation  amount and all accrued  and
unpaid  distributions on such Preferred Securities to the date of payment to the
extent such NWPS Trust has funds  legally available therefor and (b) the  amount
of   assets  of  such  NWPS  Trust   remaining  available  for  distribution  to
    

                                       41
<PAGE>
holders of such  Preferred Securities  in liquidation  of such  NWPS Trust.  The
Company's  obligation to  make a  Guarantee Payment  may be  satisfied by direct
payment of  the required  amounts by  the Company  to the  holders of  Preferred
Securities or by causing such NWPS Trust to pay such amounts to such holders.

   
    Each  Guarantee will be  a full and unconditional  guarantee with respect to
the Preferred Securities issued  by the applicable NWPS  Trust from the time  of
issuance  of such  Preferred Securities  but will  not apply  to any  payment of
distributions due  to  the extent  such  NWPS  Trust shall  lack  funds  legally
available  therefor as a result of a failure  by the Company to make payments of
interest or principal on the Subordinated  Debt Securities. If the Company  does
not make interest payments on the Subordinated Debt Securities purchased by such
NWPS  Trust,  such  NWPS  Trust  will not  pay  distributions  on  the Preferred
Securities issued by  a NWPS  Trust and will  not have  funds legally  available
therefor. See "Description of the Subordinated Debt Securities."
    

   
    The  Company  and  NWPS  Capital  believe  that  the  above  mechanisms  and
obligations,  taken  together,  are  substantially  equivalent  to  a  full  and
unconditional  guarantee  by  the  Company  of  payments  due  on  the Preferred
Securities.
    

    The Company has also agreed to irrevocably and unconditionally guarantee the
obligations of  the NWPS  Trusts  with respect  to  the Common  Securities  (the
"Common  Securities Guarantee")  to the  same extent  as the  Guarantees, except
that, upon  an  event of  default  under  the Indenture,  holders  of  Preferred
Securities  under  the Guarantees  shall have  priority  over holders  of Common
Securities under the Common Securities Guarantees with respect to  distributions
and payments on liquidation, redemption or otherwise.

CERTAIN COVENANTS OF THE COMPANY

    In  each Guarantee, the Company will covenant that, so long as any Preferred
Securities issued  by the  applicable NWPS  Trust remain  outstanding, if  there
shall  have occurred any event  that would constitute an  event of default under
such Guarantee or the Declaration of such NWPS Trust, then (a) the Company shall
not declare or pay any dividend on, or make any distribution with respect to, or
redeem, purchase, acquire or make a liquidation payment with respect to, any  of
its  capital stock and (b)  the Company shall not  make any payment of interest,
principal or  premium,  if any,  on  or repay,  repurchase  or redeem  any  debt
securities  issued by the Company  which rank pari passu  with or junior to such
Subordinated Debt  Securities.  However, each  Guarantee  will except  from  the
foregoing any stock dividends paid by the Company where the dividend stock is of
the same as that on which the dividend is being paid.

MODIFICATION OF THE GUARANTEES; ASSIGNMENT

   
    Except  with respect to any changes  that do not materially adversely affect
the rights of holders  of Preferred Securities  (in which case  no vote will  be
required),  each Guarantee may  be amended only  with the prior  approval of the
holders of  not less  than 66  2/3%  in liquidation  amount of  the  outstanding
Preferred  Securities  issued  by  the  applicable  NWPS  Trust.  The  manner of
obtaining any such approval of holders of such Preferred Securities will be  set
forth  in an accompanying  Prospectus Supplement. All  guarantees and agreements
contained in  a  Guarantee  shall bind  the  successors,  assignees,  receivers,
trustees  and representatives of the  Company and shall inure  to the benefit of
the holders  of the  Preferred  Securities of  the  applicable NWPS  Trust  then
outstanding.
    

EVENTS OF DEFAULT

    An  Event of Default under the Guarantee  will occur upon the failure of the
Company to perform  any of  its payments  or other  obligations thereunder.  The
holders of a majority in liquidation amount of the Preferred Securities to which
a  Guarantee relates  have the  right to  direct the  time, method  and place of
conducting any proceeding for any remedy  available to the Guarantee Trustee  in
respect  of  the Guarantee  or  to direct  the exercise  of  any trust  or power
conferred upon the Guarantee Trustee under the Guarantee.

   
    If the Guarantee  Trustee fails  to enforce  such Guarantee,  any holder  of
Preferred Securities relating to such Guarantee may, after such holder's written
request  to the  Guarantee Trustee to  enforce the Guarantee,  institute a legal
proceeding directly  against  the Company  to  enforce the  Guarantee  Trustee's
rights under such Guarantee without first instituting a legal proceeding against
the relevant NWPS Trust, the Guarantee Trustee or any other person or entity.
    

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    The  Company will be required to provide annually to the Guarantee Trustee a
statement as to  the performance by  the Company of  certain of its  obligations
under each of the Guarantees and as to any default in such performance.

    The  Company  is required  to file  annually with  the Guarantee  Trustee an
officer's certificate as to the  Company's compliance with all conditions  under
each of the Guarantees.

INFORMATION CONCERNING THE GUARANTEE TRUSTEE

    The  Guarantee Trustee, prior to the  occurrence of a default, undertakes to
perform only such  duties as are  specifically set forth  in the Guarantee  and,
after  default with respect  to a Guarantee,  shall exercise the  same degree of
care as a prudent  individual would exercise  in the conduct of  his or her  own
affairs. Subject to such provision, the Guarantee Trustee is under no obligation
to  exercise any  of the  powers vested in  it by  a Guarantee  Agreement at the
request of any holder  of Preferred Securities unless  it is offered  reasonable
indemnity  against the  costs, expenses and  liabilities that  might be incurred
thereby.

TERMINATION OF THE GUARANTEES

    Each Guarantee will terminate as to  the Preferred Securities issued by  the
applicable NWPS Trust upon full payment of the Redemption Price of all Preferred
Securities  of  the  NWPS  Trust, upon  distribution  of  the  Subordinated Debt
Securities held by the NWPS Trust to the holders of the Preferred Securities  of
such  NWPS Trust, or upon full payment of the amounts payable in accordance with
the Declaration of  such NWPS Trust  upon liquidation of  such NWPS Trust.  Each
Guarantee  will continue to be effective or  will be reinstated, as the case may
be, if at any time any holder  of Preferred Securities issued by the  applicable
NWPS Trust must restore payment of any sums paid under such Preferred Securities
or such Guarantee.

STATUS OF THE GUARANTEES

    Each  Guarantee will constitute  an unsecured obligation  of the Company and
will rank  (i)  subordinate  and  junior  in  right  of  payment  to  all  other
liabilities  of the Company, (ii)  pari passu with the  most senior preferred or
preference stock now or hereafter issued  by the Company and with any  guarantee
now  or hereafter  entered into by  the Company  in respect of  any preferred or
preference stock  of any  affiliate of  the  Company, and  (iii) senior  to  the
Company's  common stock. The terms of the Preferred Securities provide that each
holder of Preferred  Securities issued  by a  NWPS Trust  by acceptance  thereof
agrees  to  the  subordination  provisions and  other  terms  of  the applicable
Guarantee.

    Each Guarantee will constitute a guarantee of payment and not of  collection
(allowing  the guaranteed party to institute a legal proceeding directly against
the guarantor to  enforce its  rights under  a Guarantee  without instituting  a
legal proceeding against any other person or entity).

GOVERNING LAW

    The  Guarantee  will be  governed by  and construed  in accordance  with the
internal laws of the State of New York.

                        DESCRIPTION OF THE COMMON STOCK

GENERAL

   
    Under the Company's Restated Certificate  of Incorporation, as amended  (the
"Charter"),  the Company is authorized to  issue three classes of capital stock:
300,000 shares of Cumulative Preferred Stock, par value $100 per share, of which
26,000 shares of 4 1/2% Cumulative Preferred  Stock and 40,000 shares of 5  1/4%
Cumulative  Preferred Stock are outstanding; 200,000 shares of Preference Stock,
par value $50 per share, none of which are outstanding; and 20,000,000 shares of
Common Stock, par value $3.50 per share, 7,677,232 of which were outstanding  as
of  June 8, 1995. The Cumulative Preferred Stock and the Preference Stock may be
issued at any time by the Board of  Directors in such series with such terms  as
it may fix in resolutions providing for the issuance thereof.
    

    The following statements are summaries of certain provisions relating to the
Common  Stock  contained  in  the Charter,  the  Company's  First  Mortgage Bond
Indenture, as supplemented to date (the "1940 Indenture"), and the Company's New
Mortgage  (the   1940   Indenture   and   the   New   Mortgage   Indenture   are

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<PAGE>
referred  to together as the "Bond Indentures"). Such summaries are not complete
descriptions of the provisions  of the Charter and  the Bond Indentures and  are
qualified  in  their entirety  by reference  thereto. The  Charter and  the Bond
Indentures are  contained in  exhibits to  reports and  registration  statements
which have been filed with the Commission (see "Available Information").

DIVIDEND RIGHTS

    Subject  to  the limitations  described in  the following  three paragraphs,
dividends may be paid  on the Common  Stock out of  funds legally available  for
that purpose, when and as declared by the Company's Board of Directors.

   
    The Company may not declare or pay cash dividends on the Common Stock unless
full  dividends on  all Cumulative Preferred  Stock and on  any Preference Stock
then outstanding for the  current and all past  quarterly dividend periods  have
been  paid or provided for. Also, dividends on  the Common Stock may not be paid
unless the Company  has complied with  all sinking fund  requirements for  those
series  of the  Cumulative Preferred Stock  and any Preference  Stock which have
such requirements.
    

   
    Under the  terms  of  the Charter,  for  so  long as  shares  of  Cumulative
Preferred  Stock are outstanding, the following  dividend limitations may not be
exceeded unless  authorized by  the  holders of  two-thirds of  the  outstanding
shares  of such stock: dividends (other  than dividends payable in Common Stock)
and other distributions on, or acquisitions by the Company for value of,  Common
Stock  (a) may not exceed  50% of the Company's  Net Income Available for Common
Stock for the preceding  12-months' period if the  "common stock equity" of  the
Company  is less than 20% of "total capitalization" (each calculated as required
by the  Charter)  and  (b) may  not  exceed  75%  of such  Net  Income  if  such
capitalization  ratio is 20% or  more but less than  25%. If such capitalization
ratio is 25%  or more, no  such dividend, distribution  or acquisition shall  be
declared,  paid or  effected which  would reduce  such ratio  to less  than 25%,
except to  the  extent permitted  by  clauses (a)  and  (b). Pursuant  to  these
provisions,  at  March 31,  1995, retained  earnings were  not restricted  as to
availability for cash dividends  on the Common Stock  and the Company's  "common
stock equity" was 47% of its "total capitalization".
    

   
    The  Bond Indentures and  certain purchase agreements  relating to presently
outstanding Cumulative  Preferred Stock  contain  covenants limiting  the  funds
available  for payment of  cash dividends and other  distributions on the Common
Stock (for payment as well as purchases  of Common Stock by the Company).  Under
the  most restrictive of  existing covenants in  the Bond Indentures  or in such
purchase agreements, at March 31, 1995, a total of approximately $46,271,000 was
available for cash dividends  on the Common Stock.  In addition, under the  1940
Indenture  cash dividends on the Common Stock  and purchases of Common Stock may
be made only if the aggregate  amount expended for maintenance and provided  for
depreciation  by  the Company  subsequent to  January 1,  1946, plus  Net Income
Available for Common Stock earned after  December 31, 1945, which remains  after
such dividend (or purchase) is equal to not less than the total of 3 1/2% of the
fixed  tangible property, plant and equipment of the Company for each full year,
and a proportionate percentage for any fractional year, which shall have elapsed
between January 1, 1946, and the date of such proposed action.
    

VOTING RIGHTS

    Of the three classes of the  Company's authorized capital stock, the  Common
Stock  is the general voting stock. Holders  of Common Stock are entitled to one
vote for each share held. Except in  the case of certain dividend arrearages  on
the Cumulative Preferred Stock or Preference Stock, the Common Stock is the only
class of stock entitled to be voted for the election of directors.

LIQUIDATION RIGHTS

    In  the  event  of  a  liquidation  (whether  voluntary  or  involuntary) or
reduction in the Company's  capital resulting in any  distribution of assets  to
its  stockholders, the holders of the Common  Stock are entitled to receive, pro
rata according to the number  of shares held by each,  all of the assets of  the
Company  remaining  for  distribution  after  payment  to  the  holders  of  the
Cumulative Preferred Stock and Preference Stock of the full preferential amounts
to which they are entitled.

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<PAGE>
CERTAIN OTHER FEATURES

    Holders of Common Stock do not have any preemptive right to subscribe to  or
acquire any additional stock or other securities issued by the Company.

TRANSFER AGENTS AND REGISTRARS

    The  Transfer Agent  and Registrars for  the Common Stock  are Norwest Bank,
Minnesota, and the Company.

PROVISIONS WITH POSSIBLE ANTI-TAKEOVER EFFECTS

    The Company's Charter currently provides for the classification of the Board
of Directors into three classes. The Charter limits the number of directors that
may be elected to  not less than  nine nor more than  twelve (exclusive of  such
number  of Directors  as may be  elected by any  class of shares  of the Company
other than  the Common  Stock on  account of  specified dividend  arrearages  in
accordance  with  the  Charter) and  provides  that  vacancies on  the  Board of
Directors are to be filled by a majority vote of directors and that directors so
chosen shall hold office until  the end of the full  term of the class in  which
the  vacancy occurred. A vote of the holders of 75% of the Company's outstanding
voting stock  is required  to amend  these provisions.  In addition,  under  the
Charter  and the Delaware General Corporation  Law, directors of the Company may
only be  removed for  cause. Removal  for cause  must be  approved by  either  a
majority  vote  of directors  (excluding the  director  or directors  subject to
removal) or by a  vote of the holders  of at least a  majority of the  Company's
outstanding voting stock.

    In  addition, the  "fair price provisions"  of Charter  require that certain
proposed business combinations  between the Company  and any person  who is  the
beneficial  owner  of more  than 10%  of  the outstanding  voting shares  of the
Company (an "interested party") must  be approved by the  holders of 75% of  the
voting  shares, unless certain fair price and procedural requirements are met or
the business combination is  approved by a  majority of "Continuing  Directors,"
those directors who were elected prior to the time a person became an interested
person  and any other  director so designated  by such directors.  A vote of the
holders of 75% of  the Company's outstanding voting  stock is required to  amend
the fair price provisions.

                                 LEGAL OPINIONS

   
    The  validity of the  Offered Securities offered hereby  will be passed upon
for the Company and the NWPS Trusts by Schiff Hardin & Waite, 7200 Sears  Tower,
233  South Wacker Drive, Chicago, Illinois  60606. Certain legal matters will be
passed upon for any underwriters, dealers or agents by Winthrop, Stimson, Putnam
& Roberts, One Battery Park Plaza, New York, New York 10004. Certain matters  of
Delaware law relating to the validity of the Preferred Securities will be passed
upon  by  Richards,  Layton  & Finger,  Wilmington,  Delaware,  special Delaware
counsel to the Company and  the NWPS Trusts. Schiff Hardin  & Waite may rely  on
the  opinion of Richards, Layton & Finger as to certain matters of Delaware law.
Legal opinions relating to the  Company's franchises, titles to its  properties,
the  lien of the  New Mortgage and the  lien of the  First Mortgage (and certain
other matters)  will be  given as  to South  Dakota law  by Churchill,  Manolis,
Freeman, Kludt & Kaufman, Huron, South Dakota, local counsel for the Company, as
to  Nebraska law by  Shamberg, Wolf, McDermott &  Depue, Grand Island, Nebraska,
local counsel for  the Company, as  to North  Dakota law by  Pearce and  Durick,
Bismarck,  North Dakota, local  counsel for the  Company, and as  to Iowa law by
Nymann & Kohl, Sioux City, Iowa, local counsel for the Company.
    

    The statements  made in  this Prospectus  as  to matters  of law  and  legal
conclusions  under the captions "The NWPS  Trusts", "Description of the Mortgage
Bonds", "Description of the Subordinated  Debt Securities", "Description of  the
Preferred  Securities", "Description of the  Guarantees" and "Description of the
Common Stock" have  been prepared  under the  supervision of,  and reviewed  by,
Schiff  Hardin & Waite, counsel for the Company, and such statements are made on
the authority of that firm.

                                       45
<PAGE>
                                    EXPERTS

   
    The audited financial statements of the Company incorporated by reference in
this Prospectus have  been audited  by Arthur Andersen  LLP, independent  public
accountants   as  indicated  in  their  report  with  respect  thereto  and  are
incorporated by reference herein in reliance upon the authority of said firm  as
experts in auditing and accounting in giving such report.
    

                              PLAN OF DISTRIBUTION

    The  Company may sell the  Offered Securities in any  of the following ways:
(i) through  underwriters, dealers  or agents,  including Morgan  Stanley &  Co.
Incorporated;  (ii) directly to  a limited number  of purchasers or  to a single
purchaser; (iii) through agents  or (iv) through any  combination of the  above.
The  Prospectus Supplement,  with respect  to the  respective Offered Securities
will set forth the  terms of the offering  of the Offered Securities,  including
the  name or  names of  any underwriters,  dealers or  agents, the  price to the
public of the Offered Securities and the proceeds to the Company from such sale,
any  underwriting   discounts  and   other  items   constituting   underwriters'
compensation, any initial public offering price and any discounts or concessions
allowed  or reallowed or paid to dealers.  Any initial public offering price and
any discounts or  concessions allowed  or reallowed or  paid to  dealers may  be
changed from time to time.

    If  underwriters  are  used in  the  sale,  the Offered  Securities  will be
acquired by the underwriters for their own  account and may be resold from  time
to  time in  one or more  transactions, including negotiated  transactions, at a
fixed public offering price or at varying prices determined at the time of sale.
The Offered Securities may be offered to the public either through  underwriting
syndicates  represented by one or more  managing underwriters or directly by one
or more  underwriters.  The  underwriter  or  underwriters  with  respect  to  a
particular  underwritten offering  of Offered  Securities will  be named  in the
Prospectus  Supplement  relating  to  such  offering  and,  if  an  underwriting
syndicate is used, the managing underwriter or underwriters will be set forth on
the  cover page of such Prospectus Supplement. Unless otherwise set forth in the
Prospectus Supplement relating  hereto, the obligations  of the underwriters  to
purchase  the Offered Securities will be subject to certain conditions precedent
and the underwriters will be obligated to purchase all the Offered Securities if
any are purchased.

    If dealers are utilized in the sale of the Offered Securities in respect  of
which  this  Prospectus  is  delivered,  the  Company  will  sell  such  Offered
Securities to  the dealers  as  principals. The  dealers  may then  resell  such
Offered  Securities to  the public  at varying prices  to be  determined by such
dealers at the time  of resale. The names  of the dealers and  the terms of  the
transaction will be set forth in the Prospectus Supplement relating thereto.

    The Offered Securities may be sold directly by the Company or through agents
designated  by the Company from time to time. Any agent involved in the offer or
sale of the Offered Securities in respect to which this Prospectus is  delivered
will  be named, and any commissions payable by the Company to such agent will be
set forth  in  the  Prospectus Supplement  relating  thereto.  Unless  otherwise
indicated  in the  Prospectus Supplement,  any such  agent will  be acting  on a
reasonable efforts basis for the period of its appointment.

   
    The Offered Securities may be sold directly by the Company to  institutional
investors  or others, who may be deemed to be underwriters within the meaning of
the Securities Act with  respect to any  resale thereof. The  terms of any  such
sales will be described in the Prospectus Supplement relating thereto.
    

    Agents,  dealers and underwriters  may be entitled  under agreements entered
into with the Company  to indemnification by the  Company against certain  civil
liabilities,  including liabilities under the Securities Act, or to contribution
with respect  to payments  which such  agents, dealers  or underwriters  may  be
required  to make  in respect thereof.  Agents, dealers and  underwriters may be
customers of, engage in transactions with,  or perform services for the  Company
in the ordinary course of business.

    Each  series of Offered  Securities will be  a new issue  of securities and,
unless listed  on  a national  securities  exchange, will  have  no  established
trading    market.   Any    underwriter   to   whom    Offered   Securities   of

                                       46
<PAGE>
any series are  sold for  public offering  and sale may  make a  market in  such
series  of Offered Securities, but such underwriters will not be obligated to do
so and may  discontinue any  market making  at any  time without  notice. If  so
indicated in the Prospectus Supplement for any series of Offered Securities, the
Offered  Securities  of  such series  may  be  listed on  a  national securities
exchange. No assurance  can be  given as  to the  liquidity of,  or the  trading
market for, any Offered Securities.

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