SOUTHERN UNION CO
424B5, 1994-01-19
NATURAL GAS DISTRIBUTION
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<PAGE>
PROSPECTUS SUPPLEMENT
   
(TO PROSPECTUS DATED JANUARY 18, 1994)
    

   
                                  $475,000,000
    

                             SOUTHERN UNION COMPANY

[LOGO]
   
                           7.60% SENIOR NOTES DUE 2024
    
                                ----------------

    Interest  on  the Senior  Notes is  payable semiannually  on February  1 and
August 1 of each year, commencing August  1, 1994. The Senior Notes will  mature
on  February 1, 2024, are not redeemable  prior to maturity and are not entitled
to any sinking fund.

    The sale of the Senior Notes is conditioned upon the closing of the Missouri
Acquisition. See "The Missouri Acquisition" in the Prospectus accompanying  this
Prospectus Supplement.

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

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.

<TABLE>
<CAPTION>
                                                  PRICE TO             UNDERWRITING            PROCEEDS TO
                                                 PUBLIC (1)            DISCOUNT (2)          COMPANY (1)(3)
<S>                                         <C>                    <C>                    <C>
Per Senior Note...........................          100%                   .875%                 99.125%
Total.....................................      $475,000,000            $4,156,250            $470,843,750
</TABLE>

   
(1) Plus accrued interest, if any, from January 31, 1994.
    

(2) The  Company  has  agreed  to indemnify  the  Underwriters  against  certain
    liabilities under the Securities Act of 1933.

   
(3) Before deducting expenses payable by the Company estimated to be $848,793.
    

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

    The  Senior Notes are offered by  the several Underwriters, subject to prior
sale, when, as and  if issued to  and accepted by  the Underwriters, subject  to
approval  of certain legal  matters by counsel for  the Underwriters and certain
other conditions.  The Underwriters  reserve the  right to  withdraw, cancel  or
modify  such offer and to reject orders in whole or in part. It is expected that
delivery of the Senior Notes initially offered hereby will be made in New  York,
New York on or about January 31, 1994.

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

MERRILL LYNCH & CO.                                   SMITH BARNEY SHEARSON INC.

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

   
          The date of this Prospectus Supplement is January 18, 1994.
    
<PAGE>
    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE  OR MAINTAIN  THE MARKET PRICE  OF THE  NOTES AT  A
LEVEL  ABOVE THAT WHICH  THEY MIGHT OTHERWISE  PREVAIL IN THE  OPEN MARKET. SUCH
TRANSACTIONS MAY BE EFFECTED ON THE OPEN MARKET OR OTHERWISE. SUCH  STABILIZING,
IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.

                                USE OF PROCEEDS

   
    The  net proceeds from the  sale of the Senior  Notes, together with the net
proceeds from  the  Rights  Offering  of  approximately  $49,500,000  and  funds
generated  from operations, will be used  to (i) fund the $360,000,000 estimated
purchase price  of  the Missouri  Acquisition,  (ii) refinance  the  $20,000,000
aggregate  principal amount  of the  Company's 10 1/8%  Notes due  May 15, 1994,
(iii)  repay  approximately  $59,300,000  of  borrowings  under  the   Company's
$100,000,000  revolving credit facility, which borrowings  were used to fund the
Rio Grande  Acquisition  and  repurchase all  of  Southern  Union's  outstanding
preferred  stock and bear interest at floating  rates ranging from 4.2% to 6.0%,
(iv) refinance the $10,000,000 aggregate principal amount of the Company's 9.45%
Senior Notes due January 31, 2004 and the $25,000,000 aggregate principal amount
of the Company's 10%  Senior Notes due  January 31, 2012  and (v) refinance  the
$50,000,000  aggregate  principal amount  of  the Company's  10.5%  Sinking Fund
Debentures due May 15, 2017.
    

                       RATIO OF EARNINGS TO FIXED CHARGES

    The following table sets  forth the ratio of  earnings to fixed charges  for
the  Company for each of  the five years in the  periods ended December 31, 1992
and for the nine  and twelve months  ended September 30,  1993 on an  historical
basis,  and for the year ended December 31,  1992 and the nine and twelve months
ended September 30, 1993 on  a pro forma basis.  For the purpose of  calculating
such  ratio,  "earnings" consist  of  income from  continuing  operations before
income  taxes  and   fixed  charges.  "Fixed   charges"  consist  of   interest,
amortization  of  debt issue  costs, and  the  portion of  rentals for  real and
personal properties in  an amount deemed  to be representative  of the  interest
factor.

<TABLE>
<CAPTION>
                                                                               PRO FORMA (A)
                                                                 ------------------------------------------
                                    NINE MONTHS   TWELVE MONTHS                 NINE MONTHS   TWELVE MONTHS
      YEAR ENDED DECEMBER 31,          ENDED          ENDED       YEAR ENDED       ENDED          ENDED
  -------------------------------  SEPTEMBER 30,  SEPTEMBER 30,  DECEMBER 31,  SEPTEMBER 30,  SEPTEMBER 30,
  1988 (B) 1989  1990  1991  1992      1993           1993           1992          1993           1993
  -------  ----  ----  ----  ----  -------------  -------------  ------------  -------------  -------------
  <S>      <C>   <C>   <C>   <C>   <C>            <C>            <C>           <C>            <C>
    --      1.16  1.11  1.84  1.80        1.44          1.78           1.17           1.15          1.42
<FN>
- ------------------------------
(a)   As  adjusted to give  effect to the increased  interest expense related to
      the issuance of $475.0  million of Senior Notes  which, together with  the
      proceeds  from  the Rights  Offering, will  be used  to fund  the Missouri
      Acquisition, refinance approximately $79.3 million of short-term debt  and
      current  maturities of long-term debt outstanding as of September 30, 1993
      and refinance $85.0 million  of long-term debt  at interest rates  ranging
      from  9.45% to  10.5% due 2004  through 2017.  See "Capitalization." These
      ratios and the pro forma financial information from which they are derived
      do not reflect  the financial impact,  if any, of  (i) the rate  increases
      granted  to Southern Union  Gas and the Missouri  Business during 1993 not
      yet earned and (ii) the pro forma  effect of the results of operations  of
      the  Rio  Grande  Acquisition.  See  "Business  --  Regulation"  and  "The
      Company."
(b)   In 1988 earnings were inadequate  to cover fixed charges by  approximately
      $6.9 million.
</TABLE>

                          DESCRIPTION OF SENIOR NOTES

   
    The  Senior Notes are to  be issued under the  Indenture dated as of January
15, 1994 (the "Indenture") between Southern  Union and The Chase Manhattan  Bank
(National   Association),  which  Indenture  is  more  fully  described  in  the
Prospectus accompanying this Prospectus Supplement. The following description of
the particular terms  of the 7.60%  Senior Notes due  2024 (the "Senior  Notes")
offered  hereby (referred to in the  Prospectus as the "Senior Debt Securities")
supplements, and to the extent inconsistent therewith replaces, the  description
of  the general terms and provisions of  the Senior Debt Securities set forth in
the Prospectus under the caption "Description of the Senior Debt Securities," to
which reference  is  hereby  made.  Whenever particular  defined  terms  of  the
    

                                      S-2
<PAGE>
   
Indenture  are  referred  to,  such defined  terms  are  incorporated  herein by
reference. The Senior Notes are  the $475,000,000 aggregate principal amount  of
Senior  Debt Securities of Southern Union registered under the Securities Act of
1933, as amended, in January  1994. The Indenture does  not limit the amount  of
debt that may be incurred by the Company.
    

GENERAL

   
    Interest  on each Senior Note is payable at the annual rate set forth on the
cover page of this Prospectus Supplement, will accrue from January 31, 1994  and
be  payable semiannually  on February  1 and August  1 of  each year, commencing
August 1, 1994, to the person in whose name the Senior Note (or any  predecessor
Senior  Note)  is registered  at the  close  of business  on the  next preceding
January 15  and July  15, respectively.  The  Senior Notes  will be  limited  to
$475,000,000  aggregate principal amount  and will mature  February 1, 2024. The
Senior Notes will be senior unsecured obligations of the Company.
    

    The defeasance and covenant defeasance provisions of the Indenture described
under "Description  of  the  Senior  Debt  Securities  Defeasance  and  Covenant
Defeasance" in the Prospectus accompanying this Prospectus Supplement will apply
to the Senior Notes.

CERTAIN COVENANTS

    In  addition to the  covenants contained in the  Indenture, the Senior Notes
will include the following additional covenants:

   
    LIMITATIONS ON  RESTRICTED PAYMENTS.   Southern  Union will  not (and,  with
respect to clause (ii) will not permit any Subsidiary to) directly or indirectly
(i)  declare or pay any dividend on or  make any distribution to the holders of,
any shares of its Capital Stock (other than dividends and distributions  payable
solely  in  shares of  its Capital  Stock  (other than  Redeemable Stock)  or in
options, warrants  or other  rights to  acquire its  Capital Stock  (other  than
Redeemable  Stock)) or (ii) purchase, redeem  or otherwise acquire or retire for
consideration any  shares  of  Southern  Union's  Capital  Stock  (each  of  the
foregoing  being referred  to herein as  a "Restricted Payment")  UNLESS, at the
time of and after giving  effect to such Restricted  Payment, (1) no Default  or
Event  of Default shall  have occurred and  be continuing and  (2) the aggregate
amount of all such  Restricted Payments at the  time of such Restricted  Payment
does  not exceed the sum of (A) 50% of the cumulative Consolidated Net Income of
Southern Union from the date of the Indenture through the last day (the "Cut-Off
Date") of the  second fiscal  quarter during  which Southern  Union's Equity  to
Funded  Indebtedness  Ratio exceeded  0.73 to  1 (or,  if such  Consolidated Net
Income is a loss during  such period, minus 100% of  such loss) and 100% of  the
cumulative Consolidated Net Income of Southern Union after the Cut-Off Date (or,
if such Consolidated Net Income is a loss during such period, minus 100% of such
loss),  plus (B) the aggregate net proceeds  to Southern Union from sales of its
Capital Stock  (other  than  Redeemable  Stock  and  Capital  Stock  sold  to  a
Subsidiary) after the date of the Indenture.
    

    "Capital  Stock"  of  any  Person  means  any  and  all  shares,  interests,
participations, or  other  equivalents  (however designated)  of  such  Person's
capital stock whether now outstanding or issued after the date of the Indenture.

    "Funded  Indebtedness" means  Indebtedness that  matures more  than one year
from the date of determination.

   
    "Equity to Funded Indebtedness  Ratio" means the  ratio of Southern  Union's
total  common  stockholders'  equity  to  Southern  Union's  consolidated Funded
Indebtedness.
    

   
    RESTRICTION ON TRANSFER OF  ASSETS.  Southern Union  will not sell,  convey,
transfer  or  otherwise  dispose  of  its  assets  or  property  to  any  of its
Subsidiaries,  except   for:  (i)   sales,  conveyances,   transfers  or   other
dispositions  of assets or property acquired by Southern Union after the date of
the Indenture;  (ii)  sales, conveyances,  transfers  or other  dispositions  of
Existing  Assets (a) with a net book  value that, when aggregated with all other
such transfers by Southern Union since the  date of the Indenture, less the  net
book   value  of  Existing  Assets  transferred   to  Southern  Union  from  its
Subsidiaries, would not
    

                                      S-3
<PAGE>
   
exceed 10% of the Consolidated Assets of Southern Union or (b) to any Subsidiary
if such Subsidiary  simultaneously with  such transfer executes  and delivers  a
supplemental  indenture to the Indenture providing  for the guarantee of payment
of the Senior Notes by such Subsidiary,  which guarantee shall be senior to  any
guarantee  of such Subsidiary of subordinated  Debt of Southern Union, and shall
be PARI PASSU with any other Debt of such Subsidiary (which is not  subordinated
to   any  other  Debt  or  guarantee  of  such  Subsidiary);  and  (iii)  sales,
conveyances, transfers or other dispositions of Disposable Assets that would not
exceed 10%  of  Consolidated  Assets  of  Southern  Union.  Notwithstanding  the
foregoing,  any such guarantee of a Subsidiary of the Senior Notes shall provide
by its terms  that it shall  be automatically and  unconditionally released  and
discharged  (i) on the date that the net  book value of the Existing Assets held
by Southern Union is greater  than 90% of Consolidated  Assets or (ii) upon  any
sale,  exchange or transfer to any Person  not an Affiliate of Southern Union of
all of Southern Union's  stock in, or  all or substantially  all the assets  of,
such Subsidiary.
    

   
    "Consolidated  Assets" means the net book value of the Existing Assets shown
on the balance sheet  of Southern Union, as  determined in accordance with  GAAP
consistently applied, as of the last day of Southern Union's last fiscal quarter
prior to the date of the Indenture.
    

    "Disposable  Assets" means General  Plant (as defined  below) and all assets
primarily used in the natural gas vehicular fuels business.

   
    "Existing Assets" means the assets and other property held by Southern Union
(and not its subsidiaries) as  of the last day  of Southern Union's last  fiscal
quarter  prior to the  date of the  Indenture, plus any  assets held by Southern
Union (and not  its subsidiaries) irrevocably  designated from time  to time  by
Southern Union as Existing Assets.
    

    "General  Plant" shall have the meaning  set forth under the "Uniform System
of Accounts  for  Class A  and  B Gas  Utilities  1976 National  Association  of
Regulatory  Utility Commissioners" Chapter 6; Accounts 389 through and including
398.

   
    LIMITATION ON TRANSACTIONS WITH  AFFILIATES.  Southern  Union will not,  and
will  not  permit  any  Subsidiary  to, enter  into  any  transactions  with any
Affiliate of Southern Union unless (i)  such transactions are between and  among
Southern  Union and  wholly owned  Subsidiaries or  (ii) (A)  the terms  of such
transactions are no less favorable to Southern Union or such Subsidiary, as  the
case  may be, then the  terms which could be obtained  by Southern Union or such
Subsidiary, as  the  case  may  be,  in a  comparable  transaction  made  on  an
arm's-length  basis  between  unaffiliated parties  and  (B) a  majority  of the
disinterested directors of  the Board of  Directors of Southern  Union shall  by
resolution  determine  that such  transactions meet  the  criteria set  forth in
clause (ii)(A) above.
    

   
    For additional covenants, see "Description of the Senior Debt Securities  --
Certain Covenants" in the Prospectus accompanying this Prospectus Supplement.
    

                                      S-4
<PAGE>
                                  UNDERWRITING

   
    The Underwriters named below have severally agreed, subject to the terms and
conditions  of the Underwriting Agreement with  Southern Union, to purchase from
Southern Union the principal amount of the Senior Notes set forth below opposite
their respective names. The  Underwriters are committed to  purchase all of  the
Senior Notes if any are purchased.
    

<TABLE>
<CAPTION>
               UNDERWRITER                                                    PRINCIPAL AMOUNT
- ----------------------------------------------------------------------------  ----------------
<S>                                                                           <C>
Merrill Lynch, Pierce, Fenner & Smith
           Incorporated.....................................................   $  237,500,000
Smith Barney Shearson Inc...................................................      237,500,000
                                                                              ----------------
            Total...........................................................   $  475,000,000
                                                                              ----------------
                                                                              ----------------
</TABLE>

   
    The  Underwriters have advised Southern Union that they propose initially to
offer the Notes  to the public  at the public  offering price set  forth on  the
cover  page of this Prospectus Supplement, and  to certain dealers at such price
less a concession not in excess of .5% of the principal amount of the Notes. The
Underwriters may allow, and such dealers  may reallow, a discount not in  excess
of .25% of the principal amount of the Notes to certain other dealers. After the
initial  public offering, the public offering price, concession and discount may
be changed.
    

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

   
    Southern Union does not intend to apply for listing of the Senior Notes on a
national  securities exchange, but has been advised by the Underwriters that the
Underwriters presently intend to make a market in the Senior Notes, as permitted
by applicable laws and regulations. The Underwriters are not obligated, however,
to make  a  market in  the  Senior  Notes and  any  such market  making  may  be
discontinued   at  any  time  at  the   sole  discretion  of  the  Underwriters.
Accordingly, no  assurance can  be given  as  to the  liquidity of,  or  trading
markets for, the Senior Notes.
    

                                      S-5
<PAGE>
PROSPECTUS

                             SOUTHERN UNION COMPANY

[LOGO]
                             SENIOR DEBT SECURITIES

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

    Southern   Union   Company  ("Southern   Union"   and,  together   with  its
subsidiaries, the "Company") will offer from  time to time its unsecured  senior
debt  securities (the "Senior Debt Securities") at an aggregate initial offering
price of up to $475,000,000 on terms to  be determined at the time of sale.  The
specific  designation, aggregate  principal amount,  maturity, rate  and time of
payment of any  interest, purchase  price, any  terms relating  to mandatory  or
optional  redemption  (including  any  sinking fund),  any  modification  of the
covenants and any other specific terms in connection with the sale of the Senior
Debt Securities in respect of which  this Prospectus is being delivered are  set
forth  in an accompanying Prospectus  Supplement. The Prospectus Supplement also
includes information concerning any listing of  the Senior Debt Securities on  a
stock exchange.

    The   Senior  Debt  Securities  may  be  offered  directly,  through  agents
designated from time to time, through  dealers or through underwriters that  may
include  Merrill Lynch,  Pierce, Fenner  & Smith  Incorporated and  Smith Barney
Shearson  Inc.  See  "Plan  of  Distribution."  Any  such  agents,  dealers   or
underwriters  are set  forth in  the accompanying  Prospectus Supplement.  If an
agent of the company or a dealer  or underwriter is involved in the offering  of
the  Senior Debt  Securities, the  agent's commission,  dealer's purchase price,
underwriter's discount and net proceeds to the Company will be set forth in  the
Prospectus  Supplement. Any agents, dealers or underwriters participating in the
offering may be deemed "underwriters" within  the meaning of the Securities  Act
of 1933, as amended.

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

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. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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

   
                The date of this Prospectus is January 18, 1994.
    
<PAGE>
    NO  DEALER,  SALESPERSON 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 OR  IN AN  APPLICABLE PROSPECTUS
SUPPLEMENT IN  CONNECTION  WITH ANY  OFFER  MADE  BY THIS  PROSPECTUS  AND  SUCH
PROSPECTUS SUPPLEMENT AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS
MUST  NOT  BE  RELIED UPON  AS  HAVING BEEN  AUTHORIZED  BY THE  COMPANY  OR ANY
UNDERWRITER, DEALER OR  AGENT. NEITHER THE  DELIVERY OF THIS  PROSPECTUS OR  ANY
PROSPECTUS  SUPPLEMENT NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES
CREATE AN  IMPLICATION  THAT THE  INFORMATION  CONTAINED HEREIN  OR  THEREIN  IS
CORRECT  AS  OF  ANY  TIME  SUBSEQUENT TO  ITS  DATE.  THIS  PROSPECTUS  AND ANY
PROSPECTUS SUPPLEMENT DO NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN
OFFER TO BUY ANY SECURITIES TO WHICH IT RELATES, OR AN OFFER TO OR  SOLICITATION
OF  ANY PERSON IN ANY JURISDICTION IN  WHICH SUCH OFFER OR SOLICITATION WOULD BE
UNLAWFUL.

                             AVAILABLE INFORMATION

    This Prospectus constitutes a part of  a registration statement on Form  S-3
(together  with all amendments and exhibits, the "Registration Statement") filed
by the Company with  the Securities and  Exchange Commission (the  "Commission")
under  the  Securities Act  of  1933, as  amended  (the "Securities  Act"). This
Prospectus does not contain all of the information included in the  Registration
Statement,  certain parts of which are omitted  in accordance with the rules and
regulations of the Commission. Reference  is made to the Registration  Statement
and to the exhibits relating thereto for further information with respect to the
Company and the Senior Debt Securities offered hereby.

    The  Company is subject to the  informational requirements of the Securities
Exchange Act of 1934, as amended (the "1934 Act"), and, in accordance therewith,
files reports, proxy statements and  other information with the Commission.  The
Registration  Statement  and  amendments  thereof,  and  the  exhibits  thereto,
reports, proxy statements and  other information filed by  the Company with  the
Commission  can  be  inspected and  copied  at the  public  reference facilities
maintained by the Commission  at Judiciary Plaza, 450  Fifth Street, N.W.,  Room
1024,  Washington, D.C. 20549, and at the Commission's New York Regional Office,
7 World Trade Center, 13th Floor, Room  1400, New York, New York 10048, and  its
Chicago  Regional Office, Northwestern  Atrium Center, 500  West Madison Street,
Suite 1400, Chicago,  Illinois 60661. Copies  of such material  may be  obtained
from  the Public Reference Section of the Commission, Washington, D.C. 20549, at
prescribed rates. In addition such materials may be inspected and copied at  the
offices  of the American  Stock Exchange, 86  Trinity Place, New  York, New York
10006-1881.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

    The following documents have been filed  by the Company with the  Commission
(File No. 1-6407) pursuant to the 1934 Act and are incorporated by reference and
made a part of this Prospectus.

    (1) The Company's Annual Report on Form 10-K for the year ended December 31,
       1992 (the "1992 Form 10-K");

    (2)  The Company's  Quarterly Reports  on Form  10-Q for  the quarters ended
       March 31,  1993 (the  "First  Quarter Form  10-Q"),  June 30,  1993  (the
       "Second  Quarter Form 10-Q")  and September 30,  1993 (the "Third Quarter
       Form 10-Q"); and

    (3) The Company's Current Reports on Form 8-K dated April 15, 1993, July 12,
       1993, October 13, 1993 and January 3, 1994.

    All documents filed by the Company  with the Commission pursuant to  Section
13(a),  13(c),  14 or  15(d)  of the  1934  Act on  or  after the  date  of this
Prospectus and prior to the termination of  this offering shall be deemed to  be
incorporated  by reference into 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 or contained in
this Prospectus shall be deemed to  be supplemented, 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  supplements,  modifies  or  supersedes such
statement. Any such statement so modified  or superseded shall not be deemed  to
constitute a part of this Prospectus.

    The  Company  will  provide  without  charge to  each  person  to  whom this
Prospectus is  delivered, on  written or  oral request  of such  person, a  copy
(without  exhibits) of any  and all documents  incorporated herein by reference.
Requests  for  such  copies  should  be  directed  to  Dennis  K.  Morgan,  Vice
President-Legal and Secretary, Southern Union Company, 504 Lavaca Street, Eighth
Floor, Austin, Texas 78701 (telephone number (512) 479-5981).

                                       2
<PAGE>
                                  THE COMPANY

    Southern   Union   Company  ("Southern   Union"   and,  together   with  its
subsidiaries, the  "Company") is  primarily engaged  in various  aspects of  the
natural   gas  business.  The  Company's  principal  line  of  business  is  the
distribution of  natural gas  as a  public utility  through Southern  Union  Gas
Company  ("Southern Union Gas"), a division  of the Company. Southern Union Gas,
which accounts for  approximately 88%  of the Company's  total revenues,  serves
approximately  475,000  residential,  commercial,  industrial,  agricultural and
other customers  in  the  States  of Texas  (including  the  cities  of  Austin,
Brownsville,  El Paso, Galveston and Port Arthur) and Oklahoma. See "Business --
Southern Union Gas." The Company's subsidiaries, which have been established  to
support  and expand  natural gas  sales and to  capitalize on  the Company's gas
energy expertise,  market  natural gas  to  end-users,  sell natural  gas  as  a
vehicular  fuel, convert vehicles to operate  on natural gas, operate intrastate
and interstate  natural  gas  pipeline  systems, and  sell  commercial  gas  air
conditioning  and other  gas-fired engine-driven applications.  See "Business --
Other Company Operations."  By providing  "one-stop shopping,"  the Company  can
serve   its  various   customers'  particular  energy   needs,  which  encompass
substantially all  of the  natural gas  distribution and  sales businesses  from
regulated  and unregulated  natural gas  sales to  specialized energy consulting
services.

    The Company is a sales and market-driven energy company whose management  is
committed to achieving profitable growth of its natural gas energy businesses in
an  increasingly competitive  business environment.  Management's strategies for
achieving these  objectives  principally consist  of:  (i) promoting  new  sales
opportunities  and  markets  for  natural  gas;  (ii)  enhancing  financial  and
operating performance;  and  (iii)  expanding  the  Company  through  developing
existing  natural gas distribution systems  and selectively acquiring additional
natural gas distribution systems. Management developed and continually evaluates
these strategies  and their  implementation by  analyzing the  energy  industry,
technological  advances, market opportunities and  general business trends. Each
of  these  strategies,  as  implemented  throughout  the  Company's  businesses,
reflects  the Company's  commitment to  its core  natural gas  utility business.
Central to  all of  the Company's  businesses  and strategies  is the  sale  and
transportation of natural gas. See "Business -- Business Strategy."

    Consistent  with this  strategy, the  Company has  actively pursued selected
acquisitions  in  the  natural   gas  distribution,  transportation  and   sales
industries  where  management believes  there are  opportunities to  promote new
sales of, and  markets for, natural  gas and/or synergies  that permit  enhanced
financial  and operating  performance. Since  1990, Southern  Union has acquired
seven gas distribution systems in Texas. Collectively, these systems have  added
nearly   115,000  of   Southern  Union   Gas'  present   customers  representing
approximately $47,700,000 of annual sales revenue to the Company. See  "Business
- -- Business Strategy" and "Acquisitions, Divestiture and Merger" in the Notes to
the  Company's Consolidated Financial Statements included  in the 1992 Form 10-K
that is incorporated by  reference into this  Prospectus. Southern Union's  most
recent  acquisition was on September 30, 1993 when it acquired Rio Grande Valley
Gas Company,  a subsidiary  of  Valero Energy  Corporation ("Rio  Grande"),  for
approximately  $31,050,000 (the "Rio Grande Acquisition"). See the Third Quarter
Form 10-Q that is  incorporated by reference into  this Prospectus. The  Company
has  also agreed to an acquisition that will add approximately 460,000 customers
in western Missouri. See "The Missouri Acquisition."

    Southern Union was incorporated under the  laws of the State of Delaware  in
1932.  The Company's  corporate headquarters are  located at  504 Lavaca Street,
Eighth Floor,  Austin, Texas  78701.  The Company's  telephone number  is  (512)
477-5981.

                                       3
<PAGE>
                            THE MISSOURI ACQUISITION

    On  July 9, 1993, Southern Union entered  into an Agreement for the Purchase
of Assets (the "Missouri Asset Purchase Agreement") with Western Resources, Inc.
("Western Resources"), pursuant to which  Southern Union has agreed to  purchase
from  Western Resources certain  Missouri natural gas  operations (the "Missouri
Acquisition"). These operations serve approximately 460,000 customers in western
Missouri, including the cities of Kansas  City, St. Joseph and Joplin,  Missouri
(the  "Missouri Business"). See "Business -- Missouri Business." If the Missouri
Acquisition occurs,  the Company  will  nearly double  the number  of  customers
served  by its natural gas distribution systems and become one of the top 15 gas
utilities in the United States, as measured by number of customers. In addition,
the Missouri Acquisition will lessen the sensitivity of the Company's operations
to weather risk and  local economic conditions  by diversifying operations  into
different  geographic areas. The  incurrence of additional  debt and issuance of
new equity in connection with the Missouri Acquisition will significantly change
the Company's capital structure. See "Capitalization," "Management's  Discussion
and  Analysis of Financial Condition and Results of Operations -- Future Capital
Needs and  Resources"  and "Unaudited  Pro  Forma Combined  Condensed  Financial
Information."  Southern  Union  intends  to  operate  the  Missouri  Business as
"Missouri Gas Energy," a separate division of Southern Union to be headquartered
in Kansas City, Missouri.

   
    On December 29,  1993 the  Missouri Public Service  Commission (the  "MPSC")
issued  all  MPSC approvals  necessary to  consummate the  Missouri Acquisition,
which approvals became  effective on  January 9,  1994. The  MPSC's approval  is
subject  to  the terms  of  a stipulation  and  settlement agreement  (the "MPSC
Stipulation") among Southern Union,  Western Resources, the  MPSC staff and  all
intervenors  in the MPSC  proceeding. Among other  things, the MPSC Stipulation:
(i) requires the Company  to attain, within  three years of  the closing of  the
Missouri  Acquisition, a total debt to total  capital ratio that does not exceed
Standard and  Poor's Corporation's  Utility Financial  Benchmark ratio  for  the
lowest  investment grade investor-owned natural gas distribution company (which,
at this time, would be  approximately 58%) or it will  not be able to  implement
any  general rate increase with respect to the Missouri Business; (ii) prohibits
Southern Union from  implementing a  general rate  increase in  Missouri for  at
least  three  years except  in certain  unusual  events; (iii)  requires Western
Resources to  contribute  an additional  $9,000,000  to the  Missouri  Business'
employees' qualified defined benefit plans to be transferred to the Company; and
(iv)  requires  the  Company to  contribute,  beginning in  1994,  an additional
$3,000,000 to the Missouri Business' employees' qualified defined benefit plans.
See the Company's  Current Report on  Form 8-K  dated January 3,  1994, that  is
incorporated by reference into this Prospectus.
    

   
    In  addition, on December 31, 1993 Southern Union successfully consummated a
rights offering  to its  existing  stockholders to  subscribe for  and  purchase
2,000,000  shares  of Southern  Union common  stock, par  value $1.00  per share
("Common Stock"), at $25.00 per share for aggregate proceeds of $50,000,000 (the
"Rights Offering").  The  proceeds  from  the  Rights  Offering,  together  with
proceeds  from the  sale of  Senior Debt  Securities, will  be used  to fund the
Missouri Acquisition.
    

    The following summary does  not purport to be  complete and is qualified  in
its  entirety by reference to the  Missouri Asset Purchase Agreement and related
agreements described  below  that are  exhibits  thereto, copies  of  which  are
attached as Exhibit 10.1 to the Company's Current Report on Form 8-K, dated July
12, 1993, that is incorporated by reference into this Prospectus.

    PURCHASE  PRICE.   The purchase price  payable by Southern  Union to Western
Resources for the Missouri Acquisition is  $327,940,000 in cash, to be  adjusted
as   of  the  closing  date  to   reflect  permitted  capital  expenditures  and
depreciation relating to the Missouri Business since March 31, 1993 and accounts
receivable net of accounts payable as of closing. At the closing, Southern Union
will pay Western Resources an estimate of this purchase price subject to a final
determination of the purchase  price and all adjustments  within 120 days  after
the  closing. Southern Union presently expects the Missouri Acquisition to close
during the  first  quarter  of 1994  and  the  aggregate purchase  price  to  be
approximately $360,000,000.

                                       4
<PAGE>
    LIABILITIES   ASSUMED.    Southern  Union   has  agreed  to  assume  certain
liabilities of  Western Resources  with respect  to the  assets being  acquired,
including liabilities arising from certain specified contracts to be assigned to
Southern  Union at closing,  including gas supply  and transportation contracts,
office equipment leases and real estate leases, liabilities arising from certain
contracts entered into by Western Resources in the ordinary course of  business,
certain  liabilities that  have arisen  or may arise  from the  operation of the
Missouri Business,  and  liabilities for  certain  accounts payable  of  Western
Resources pertaining to the Missouri Business.

    ENVIRONMENTAL.   Southern Union  and Western Resources  have agreed to enter
into an  Environmental  Liability  Agreement  at the  closing  of  the  Missouri
Acquisition.  Subject to the accuracy of certain representations made by Western
Resources in the Missouri Asset  Purchase Agreement, the agreement will  provide
for  a tiered approach to the  allocation of substantially all liabilities under
environmental laws that may exist or arise with respect to the Missouri Business
and the  assets  Southern  Union  acquires  in  the  Missouri  Acquisition.  The
agreement  contemplates Southern  Union first  seeking reimbursement  from other
potentially responsible parties, or  recovery of such  costs under insurance  or
through  rates  charged  to  customers.  To  the  extent  certain  environmental
liabilities are discovered by Southern Union prior to July 9, 1995, and are  not
so  reimbursed or  recovered, Southern Union  will be responsible  for the first
$3,000,000, if any, of out of pocket  costs and expenses incurred to respond  to
and  remediate any such environmental claim. Thereafter, Western Resources would
share one-half  of the  next $15,000,000  of any  such costs  and expenses,  and
Southern  Union would be solely liable for any such costs and expenses in excess
of $18,000,000. The Company believes that it will be able to obtain  substantial
if not complete reimbursement or recovery for any such environmental liabilities
from  other  potentially responsible  third  parties, under  insurance  or rates
charged to customers. See "Business -- Missouri Business -- Environmental."

    EMPLOYEES.  Southern Union has agreed, pursuant to the terms of an  Employee
Agreement  with Western Resources entered into on  July 9, 1993, to employ after
the closing of the Missouri  Acquisition certain employees of Western  Resources
involved  in the  operation of  the Missouri  Business ("Continuing Employees").
Under  the  terms  of  the  Employee  Agreement,  the  assets  and   liabilities
attributable  to  Continuing  Employees,  and  to  retired  employees  who  were
necessary to the operation of the Missouri Business ("Retired Employees"), under
Western Resources' qualified defined benefit plans,  are to be transferred to  a
qualified  defined benefit plan of Southern  Union that will provide benefits to
Continuing Employees  and  Retired  Employees  substantially  similar  to  those
provided  for under Western Resources' defined benefit plans. Southern Union has
also agreed  to establish  or  maintain a  defined  contribution plan  in  which
Continuing  Employees covered  by Western  Resources' defined  contribution plan
will be  eligible  to participate,  and  to provide  Continuing  Employees  with
certain  welfare, separation and other  benefits and arrangements. See "Business
- -- Missouri Business -- Employees."

   
    CONDITIONS  TO  CLOSING.    The  Missouri  Acquisition  is  subject  to  the
satisfaction  of certain  conditions to  closing. The  Federal Energy Regulatory
Commission ("FERC") must approve  the Missouri Acquisition  with respect to  the
transportation  of de minimis  volumes of gas  between Western Resources' Kansas
operations and the Missouri Business, which  approval was issued on January  12,
1994.   In  addition,  Southern  Union's  ability  to  consummate  the  Missouri
Acquisition is dependent upon  the receipt of proceeds  from the sale of  Senior
Debt Securities. See "Use of Proceeds" and "Management's Discussion and Analysis
of  Financial Condition  and Results of  Operations -- Future  Capital Needs and
Resources."
    

    There can be no assurance that all  of the conditions to the closing of  the
Missouri Acquisition that are contained in the Missouri Asset Purchase Agreement
will  be satisfied or waived,  or that, if all  such conditions are satisfied or
waived, the Missouri Acquisition will occur.

    SOUTHERN UNION  FINANCING  MATTERS.    Southern  Union  represented  in  the
Missouri  Asset Purchase Agreement  that, as of closing,  it will have available
sufficient funds with  which to pay  the adjusted purchase  price and the  other
costs    and    expenses    of   the    transactions    contemplated    by   the

                                       5
<PAGE>
Missouri Asset Purchase Agreement. Southern Union has agreed, subject to certain
conditions, to pay Western Resources $12,000,000  in cash if the Missouri  Asset
Purchase  Agreement is terminated (i) by  Western Resources due to the inability
of Southern Union to obtain funds sufficient to pay the adjusted purchase  price
available  to it on the date of closing or (ii) by Southern Union if it fails to
satisfy or agree to comply  with a condition or  provision contained in a  final
order  by  the MPSC  that  pertains either  to  the nature  of  Southern Union's
financing for the Missouri Acquisition  or the Company's capital structure  that
would result from the Missouri Acquisition.

    TERMINATION  PROVISIONS.  The Missouri Asset  Purchase Agreement also may be
terminated: (i) by either party if all conditions to such party's obligation  to
consummate   the  transactions  contemplated  by  the  Missouri  Asset  Purchase
Agreement are not satisfied by July 9,  1994, unless due to the failure of  such
party  to comply  fully with its  obligations under the  Missouri Asset Purchase
Agreement; (ii) by either party if a final order or injunction of a governmental
authority has  been  issued  restraining  or  prohibiting  consummation  of  the
transactions  contemplated  by  the  Missouri Asset  Purchase  Agreement  or any
material part thereof; (iii) by either party following a material breach by  the
other party of any representation, warranty, covenant or agreement of such other
party,  and such other party's failure to cure the same within 30 days of notice
thereof; or (iv) by the mutual consent of both parties.

                                USE OF PROCEEDS

    The net proceeds from the sale of  the Senior Debt Securities of any  series
will be specified in the Prospectus Supplement applicable to such series and are
expected  to be used to fund the  Missouri Acquisition, refinance certain of the
Company's existing debt or provide working capital for the Company's operations.
See "The Missouri Acquisition."

                       RATIO OF EARNINGS TO FIXED CHARGES

    The following table sets  forth the ratio of  earnings to fixed charges  for
the Company for each of the five years in the period ended December 31, 1992 and
for  the nine and twelve months ended September 30, 1993 on an historical basis,
and for the year ended  December 31, 1992 and the  nine and twelve months  ended
September  30, 1993 on  a pro forma  basis. For the  purpose of calculating such
ratio, "earnings" consist  of income  from continuing  operations before  income
taxes  and fixed charges.  "Fixed charges" consist  of interest, amortization of
debt issue costs and the portion of rentals for real and personal properties  in
an amount deemed to be representative of the interest factor.

<TABLE>
<CAPTION>
                                                                             PRO FORMA(A)
                                                               -----------------------------------------
                                  NINE MONTHS   TWELVE MONTHS                NINE MONTHS   TWELVE MONTHS
    YEAR ENDED DECEMBER 31,          ENDED          ENDED       YEAR ENDED      ENDED          ENDED
- -------------------------------  SEPTEMBER 30,  SEPTEMBER 30,  DECEMBER 31,   SEPTEMBER    SEPTEMBER 30,
1988(B)  1989  1990  1991  1992      1993           1993           1992        30, 1993        1993
- -------  ----  ----  ----  ----  -------------  -------------  ------------  ------------  -------------
<S>      <C>   <C>   <C>   <C>   <C>            <C>            <C>           <C>           <C>
   --    1.16  1.11  1.84  1.80        1.44            1.78         1.17          1.15            1.42
<FN>
- ------------------------------
(a) As  adjusted to give effect to the increased interest expense related to the
    issuance of $475.0 million  of Senior Debt  Securities which, together  with
    the  proceeds from the  Rights Offering, will  be used to  fund the Missouri
    Acquisition, refinance approximately  $79.3 million of  short-term debt  and
    current  maturities of long-term  debt outstanding as  of September 30, 1993
    and refinance $85.0 million of long-term debt at interest rates ranging from
    9.45% to 10.5% due 2004 through 2017. See "Capitalization." These ratios and
    the pro  forma financial  information from  which they  are derived  do  not
    reflect  the financial impact, if any, of  (i) the rate increases granted to
    Southern Union Gas and the Missouri Business during 1993 not yet earned  and
    (ii)  the pro forma  effect of the  results of operations  of the Rio Grande
    Acquisition. See "Business -- Regulation" and "The Company."
(b) In 1988 earnings  were inadequate  to cover fixed  charges by  approximately
    $6.9 million.
</TABLE>

                                       6
<PAGE>
                                 CAPITALIZATION

   
    The  following table sets forth (i) the  capitalization of the Company as of
September 30, 1993  and (ii) the  adjusted capitalization of  the Company as  of
such  date after giving effect to (a) the issuance of 2,000,000 shares of Common
Stock in the Rights  Offering, (b) the completion  of the Missouri  Acquisition,
including  the sale of Senior Debt Securities  to fund such Acquisition, and (c)
the sale of Senior Debt Securities to refinance certain short-term debt, current
maturities of  long-term  debt and  certain  long-term debt  outstanding  as  of
September 30, 1993. This capitalization table should be read in conjunction with
the  Company's Consolidated Financial  Statements and notes  thereto included in
the 1992 Form  10-K and the  Third Quarter  Form 10-Q that  are incorporated  by
reference  into this Prospectus  and the Historical  Financial Statements of the
Missouri Business  and  notes  thereto  and the  Unaudited  Pro  Forma  Combined
Financial  Statements  and notes  thereto that  are  included elsewhere  in this
Prospectus.
    

<TABLE>
<CAPTION>
                                                                              AS OF SEPTEMBER 30, 1993
                                                       -----------------------------------------------------------------------
                                                                                                                  AS ADJUSTED
                                                                                                                    FOR THE
                                                                                                                     RIGHTS
                                                                                                                   OFFERING,
                                                                                                                      THE
                                                                                                                    MISSOURI
                                                                                         AS                       ACQUISITION
                                                                                      ADJUSTED                    AND THE SALE
                                                                                      FOR THE                      OF SENIOR
                                                                      PRO FORMA        RIGHTS      PRO FORMA          DEBT
                                                       HISTORICAL    ADJUSTMENTS      OFFERING    ADJUSTMENTS      SECURITIES
                                                       ----------   -------------    ----------   ------------    ------------
                                                                               (DOLLARS IN THOUSANDS)
<S>                                                    <C>          <C>              <C>          <C>             <C>
Short-term debt, including current maturities of
 long-term debt......................................  $   90,947                    $  90,947    $(79,306)(b)    $   11,641
                                                       ----------                    ----------   ------------    ------------
Long-term debt:
  First mortgage bonds:
    11.5% due 2000 -- collateralized by utility plant
     in service......................................       2,700                        2,700                         2,700
  Sinking fund debentures:
    10.5% due 2017...................................      50,000                       50,000    (50,000)(c)          --
  Other long-term debt:
    9.45% notes due 2004.............................      10,000                       10,000    (10,000)(c)          --
    10% notes due 2012...............................      25,000                       25,000    (25,000)(c)          --
    Other............................................       1,422                        1,422                         1,422
  Senior Debt Securities:
    7.60% Senior Notes due 2024......................      --                           --        475,000(c)         475,000
                                                       ----------                    ----------   ------------    ------------
Total long-term debt.................................      89,122                       89,122    390,000            479,122
                                                       ----------                    ----------   ------------    ------------
Common stockholders' equity:
  Common stock, $1 par value; authorized 50,000,000
   shares; issued 5,252,110 shares (7,252,110 shares
   as adjusted for the Rights Offering)..............       5,304   $   2,000 (a)        7,304                         7,304
  Premium on capital stock...........................     144,925      47,500 (a)      192,425                       192,425
  Less treasury stock, 51,625 shares at cost.........        (794)                        (794 )                        (794 )
  Retained earnings..................................         492                          492                           492
                                                       ----------   -------------    ----------                   ------------
Total common stockholders' equity....................     149,927      49,500          199,427                       199,427
                                                       ----------   -------------    ----------   ------------    ------------
Total capitalization.................................  $  329,996   $  49,500        $ 379,496    $310,694        $  690,190
                                                       ----------   -------------    ----------   ------------    ------------
                                                       ----------   -------------    ----------   ------------    ------------
<FN>
- ------------------------
(a) Reflects the Company's receipt of $50.0  million in gross proceeds from  the
    completion  of  the  Rights  Offering, less  approximately  $0.5  million in
    estimated stock issuance costs.
(b) Reflects the use of the net proceeds from the Rights Offering together  with
    a  portion of the proceeds from the sale of Senior Debt Securities to retire
    approximately $59.3 million of borrowings on the Company's revolving  credit
    facility  and refinance $20.0 million of the Company's 10 1/8% notes due May
    15, 1994.
(c) Reflects the sale of Senior Debt Securities totalling $475.0 million  which,
    together  with the proceeds from  the Rights Offering, will  be used to fund
    the Missouri  Acquisition  and  refinance  approximately  $79.3  million  of
    short-term  debt and current maturities of  long-term debt and $85.0 million
    of long-term debt outstanding as of September 30, 1993.
</TABLE>

                                       7
<PAGE>
          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION

   
    The following unaudited pro  forma combined condensed financial  information
consists  of the Unaudited Pro Forma Combined Condensed Statements of Operations
for the nine months ended September 30, 1993, the twelve months ended  September
30,  1993 and  the year ended  December 31,  1992 (the "Pro  Forma Statements of
Operations") and the Unaudited Pro Forma Combined Condensed Balance Sheet as  of
September  30, 1993 (the  "Pro Forma Balance  Sheet," and together  with the Pro
Forma Statements of Operations, the  "Pro Forma Financial Statements"). The  Pro
Forma  Statements of Operations have been prepared by combining the consolidated
statements of operations of the Company with the statements of operations of the
Missouri Business for the periods indicated, adjusted to give effect to (i)  the
issuance  of 2,000,000 shares of  Common Stock in the  Rights Offering, (ii) the
completion of  the  Missouri Acquisition,  including  the sale  of  Senior  Debt
Securities to fund such Acquisition and (iii) the sale of Senior Debt Securities
to  refinance certain short-term debt, current  maturities of long-term debt and
certain  long-term  debt  outstanding  at   September  30,  1993,  as  if   such
transactions  had been consummated as of the  beginning of each such period. The
Pro Forma Balance Sheet has been prepared by combining the consolidated  balance
sheet  of the  Company as of  September 30, 1993  with the balance  sheet of the
Missouri Business as of September 30, 1993,  adjusted to give effect to (i)  the
issuance  of 2,000,000 shares of  Common Stock in the  Rights Offering, (ii) the
completion of  the  Missouri Acquisition,  including  the sale  of  Senior  Debt
Securities to fund such Acquisition and (iii) the sale of Senior Debt Securities
to  refinance certain short-term debt, current  maturities of long-term debt and
certain long-term  debt  outstanding  as  of September  30,  1993,  as  if  such
transactions had been consummated on September 30, 1993.
    

    The  Pro  Forma Financial  Statements are  based  on and  should be  read in
conjunction with  the  Company's  Consolidated Financial  Statements  and  notes
thereto, included in the 1992 Form 10-K and the Third Quarter Form 10-Q that are
incorporated  by reference  into this  Prospectus, and  the Historical Financial
Statements of  the  Missouri  Business  that  are  included  elsewhere  in  this
Prospectus.

    The Pro Forma Statements of Operations are not necessarily indicative of the
combined effects on the Company's results of operations that would have resulted
if  the  Rights  Offering and  the  Missouri Acquisition  had  actually occurred
earlier.

   
    The pro forma adjustments are based on preliminary assumptions and estimates
made by the  Company's management regarding  anticipated efficiencies  resulting
from  the  combined  operations,  reductions  in  costs  planned  by management,
purchase accounting  adjustments and  the fair  market value  of certain  assets
acquired in the Missouri Business. The Pro Forma Statements of Operations do not
reflect  the financial  impact, if  any, of  (i) the  rate increases  granted to
Southern Union Gas and the Missouri Business during 1993 not yet earned and (ii)
the pro forma effect of the results of operations of the Rio Grande Acquisition.
Gas service rates,  established by  regulatory authorities, are  based upon  the
utility's  costs  including  operating,  administrative  and  finance  costs and
include a return on  equity. As a  result, reductions in  a utility's costs  may
have  a direct impact  on the level of  rates it is allowed  to collect from its
customers in the future. See "Business -- Regulation." The actual allocation  of
the  consideration paid for the Missouri Business may differ from that reflected
in the Pro Forma Financial Statements after a more extensive review of the  fair
market  values of  the assets acquired  and liabilities assumed  in the Missouri
Acquisition has  been  completed.  Amounts  allocated will  be  based  upon  the
estimated  fair values at the time of the Missouri Acquisition, which could vary
significantly  from  the  amounts  as  of  September  30,  1993.  The   Missouri
Acquisition will be accounted for using the purchase method of accounting.
    

   
    The  following table sets forth  a summary of the  sources and uses of funds
resulting from  (i) the  issuance of  2,000,000 shares  of Common  Stock in  the
Rights  Offering, (ii) the completion of the Missouri Acquisition, including the
sale of Senior Debt Securities  to fund such Acquisition  and (iii) the sale  of
Senior  Debt Securities to refinance certain short-term debt, current maturities
of long-term debt  and certain long-term  debt outstanding as  of September  30,
1993,  as if such  transactions had been  consummated on September  30, 1993 (in
thousands):
    
<TABLE>
<CAPTION>
                                           SOURCES OF FUNDS
- ------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>
Gross Proceeds from Rights Offering........................................................  $  50,000
Sale of Senior Debt Securities.............................................................    475,000
                                                                                             ---------
                                                                                             $ 525,000
                                                                                             ---------
                                                                                             ---------

<CAPTION>
                                            USES OF FUNDS
- ------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>
Acquisition of Missouri Business...........................................................  $ 342,402
Refinancing of short-term borrowings used to fund the Rio Grande Acquisition...............     31,050
Refinancing of short-term debt.............................................................     28,256
Refinancing of current maturities of long-term debt........................................     20,000
Refinancing of long-term debt..............................................................     85,000
Stock and debt issuance costs and premiums on early extinguishment of debt (a).............     18,292
                                                                                             ---------
                                                                                             $ 525,000
                                                                                             ---------
                                                                                             ---------
<FN>
- ------------------------------
(a) Includes a $3.3 million premium on the $50.0 million of 10.5% debentures due
    2017 and a $10.4  million premium on  the $10.0 million  of 9.45% notes  due
    2004 and $25.0 million of 10% notes due 2012 for the early extinguishment of
    this debt.
</TABLE>

                                       8
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                  FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1993
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   135,868  $    233,291                   $   369,159
Gas purchase costs.....................................       67,866       141,241                       209,107
                                                         -----------  ------------                   -----------
  Operating margin.....................................       68,002        92,050                       160,052
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       35,289        53,117  $    (6,880)(a)       81,526
  Taxes, other than on income..........................        9,806        21,470                        31,276
  Amortization of acquisition adjustment...............        2,292                      1,111(b)         3,403
  Depreciation and amortization........................        7,968         9,347          460(c)        17,775
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       55,355        83,934       (5,309)         133,980
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       12,647         8,116        5,309           26,072
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................       (8,691)       (6,799)      15,371(d)       (24,648)
                                                                                        (24,529)(e)
  Other, net...........................................          861         2,268         (436)(f)        2,693
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (7,830)       (4,531)      (9,594)         (21,955)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............        4,817         3,585       (4,285)           4,117
Federal and state income taxes (benefit)...............        1,825           997       (1,733)(g)        1,089
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        2,992         2,588       (2,552)           3,028
Preferred dividends....................................          843                       (843)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     2,149  $      2,588  $    (1,709)     $     3,028
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $       .41                                 $       .42
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,243,934                  2,000,000(i)     7,243,934
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                       9
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                 FOR THE TWELVE MONTHS ENDED SEPTEMBER 30, 1993
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   201,408  $    330,240                   $   531,648
Gas purchase costs.....................................      107,943       203,112                       311,055
                                                         -----------  ------------                   -----------
  Operating margin.....................................       93,465       127,128                       220,593
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       47,206        69,710  $    (9,173)(a)      107,743
  Taxes, other than on income..........................       13,231        28,147                        41,378
  Amortization of acquisition adjustment...............        3,064                      1,481(b)         4,545
  Depreciation and amortization........................       10,169        12,803          614(c)        23,586
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       73,670       110,660       (7,078)         177,252
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       19,795        16,468        7,078           43,341
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................      (11,633)       (9,148)      20,400(d)       (33,086)
                                                                                        (32,705)(e)
  Other, net...........................................        3,105         2,764         (581)(f)        5,288
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (8,528)       (6,384)     (12,886)         (27,798)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............       11,267        10,084       (5,808)          15,543
Federal and state income taxes (benefit)...............        4,058         3,119       (2,421)(g)        4,756
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        7,209         6,965       (3,387)          10,787
Preferred dividends....................................        1,468                     (1,468)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     5,741  $      6,965  $    (1,919)     $    10,787
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $      1.10                                 $      1.49
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,242,340                  2,000,000(i)     7,242,340
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                       10
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1992
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   192,445  $    297,956                   $   490,401
Gas purchase costs.....................................      102,918       183,001                       285,919
                                                         -----------  ------------                   -----------
  Operating margin.....................................       89,527       114,955                       204,482
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       46,313        66,908  $    (9,173)(a)      104,048
  Taxes, other than on income..........................       13,115        25,038                        38,153
  Amortization of acquisition adjustment...............        2,958                      1,481(b)         4,439
  Depreciation and amortization........................        9,779        13,172          614(c)        23,565
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       72,165       105,118       (7,078)         170,205
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       17,362         9,837        7,078           34,277
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................      (12,459)       (8,831)      19,551(d)       (34,444)
                                                                                        (32,705)(e)
  Other, net...........................................        5,928         1,214         (581)(f)        6,561
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (6,531)       (7,617)     (13,735)         (27,883)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............       10,831         2,220       (6,657)           6,394
Federal and state income taxes (benefit)...............        4,440           705       (2,370)(g)        2,775
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        6,391         1,515       (4,287)           3,619
Preferred dividends....................................        2,500                     (2,500)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     3,891  $      1,515  $    (1,787)     $     3,619
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $       .74                                 $       .50
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,259,314                  2,000,000(i)     7,259,314
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                       11
<PAGE>
                             SOUTHERN UNION COMPANY
         NOTES TO PRO FORMA COMBINED CONDENSED STATEMENTS OF OPERATIONS

   
    The  following are adjustments to the  Pro Forma Statements of Operations to
reflect (i)  the issuance  of 2,000,000  shares of  Common Stock  in the  Rights
Offering, (ii) the completion of the Missouri Acquisition, including the sale of
Senior  Debt Securities to  fund such Acquisition  and (iii) the  sale of Senior
Debt Securities  to refinance  certain short-term  debt, current  maturities  of
long-term debt and certain long-term debt outstanding at September 30, 1993.
    

(a)  Reflects the adjustment to operations,  maintenance and general for certain
    anticipated cost savings resulting from the consolidation of operations  and
    corporate  functions,  the  integration  of  corporate  management  and  the
    elimination of certain other duplicate administrative functions.

(b) Reflects  amortization  of the  estimated  excess purchase  price  over  the
    historical  book  carrying  value of  the  assets acquired  of  the Missouri
    Business on a straight line basis over a 30 year period.

(c)  Reflects  depreciation  expense  related  to  the  purchase  of  additional
    equipment  over their estimated useful  lives. See note (a)  of Notes to Pro
    Forma Balance Sheet.

   
(d) Reflects  the  removal  of  historical  interest  expense  of  the  Missouri
    Business, the elimination of interest expense associated with the borrowings
    on  the revolving  credit facility used  for the purchase  and redemption of
    Southern Union  preferred  stock,  the elimination  of  historical  interest
    expense  associated with the  refinancing of $20.0 million  of 10 1/8% notes
    due 1994 and the elimination of historical interest expense associated  with
    the refinancing of $50.0 million of 10.5% debentures due 2017, $10.0 million
    of 9.45% notes due 2004 and $25.0 million of 10% notes due 2012.
    

   
(e)  Reflects interest expense on $430.3 million of the $475.0 million of Senior
    Debt Securities at an annual interest rate of 7.60%. The difference of $44.7
    million of Senior Debt Securities to  be sold and used to refinance  certain
    short-term   borrowings,  including  those  used  to  fund  the  Rio  Grande
    Acquisition (which transaction closed on  September 30, 1993), and  purchase
    estimated  net capital expenditures to be  incurred by the Missouri Business
    subsequent to September  30, 1993  and prior  to closing,  and related  debt
    issuance  costs were assumed  to have occurred  on September 30,  1993. As a
    result, interest expense associated with  these borrowings is not  reflected
    in the Pro Forma Statements of Operations.
    

   
(f)  Reflects  the amortization  of debt  issuance  costs of  approximately $4.2
    million  associated  with  the  sale  of  $475.0  million  of  Senior   Debt
    Securities,  a $3.3  million premium  on the  early extinguishment  of $50.0
    million of 10.5%  debentures due  2017 and a  $10.4 million  premium on  the
    early  extinguishment of  $10.0 million  of 9.45%  notes due  2004 and $25.0
    million of 10% notes due 2012 on a straight line basis over the life of  the
    new debt. See note (e) above.
    

                                       12
<PAGE>
                             SOUTHERN UNION COMPANY
   NOTES TO PRO FORMA COMBINED CONDENSED STATEMENTS OF OPERATIONS (CONTINUED)

(g)  Reflects the income  tax provision (benefit) associated  with the pro forma
    adjustments calculated using the applicable statutory state income tax rates
    and the statutory federal income tax rate  of 35% for the nine months  ended
    September  30, 1993, 34.75%  for the twelve months  ended September 30, 1993
    and 34% for the year ended December 31, 1992. The 34.75% rate for the twelve
    months ended September 30, 1993 is a weighted average of two statutory rates
    in effect during the twelve month period.

    Income tax expense, on a pro  forma combined basis, differs from the  amount
    computed  when applying the applicable statutory federal income tax rates to
    earnings before  income  taxes.  The  reasons for  the  differences  are  as
    follows:

<TABLE>
<CAPTION>
                                                                                        TWELVE MONTHS
                                                  YEAR ENDED      NINE MONTHS ENDED    ENDED SEPTEMBER
                                               DECEMBER 31, 1992  SEPTEMBER 30, 1993       30, 1993
                                               -----------------  ------------------  ------------------
                                                                (THOUSANDS OF DOLLARS)
<S>                                            <C>                <C>                 <C>
Computed "expected" tax expense..............      $   2,174          $    1,441          $    5,401
Items for which there are no tax
 consequences, principally amortization of
 additional purchase cost assigned to utility
 plant.......................................          1,025                 576                 809
Amortization of excess deferred income
 taxes.......................................            (55)               (233)               (300)
Flow through of depreciation expense.........            540                 (37)                150
Amortization of investment tax credit........           (457)               (249)               (332)
Adjustment of tax reserve....................                               (409)               (409)
Adjustment of prior year provision...........           (322)                                   (322)
Tax loss on sale of real estate in excess of
 book loss...................................           (322)                                   (322)
Other........................................            192                                      81
                                                     -------             -------             -------
                                                   $   2,775          $    1,089          $    4,756
                                                     -------             -------             -------
                                                     -------             -------             -------
</TABLE>

(h)  Reflects the  elimination of preferred  stock dividends  resulting from the
    purchase and redemption of all outstanding Southern Union preferred stock in
    March and June 1993.

(i) Reflects the  issuance of  2,000,000 shares of  Common Stock  in the  Rights
    Offering.

                                       13
<PAGE>
                             SOUTHERN UNION COMPANY

                   PRO FORMA COMBINED CONDENSED BALANCE SHEET

                               SEPTEMBER 30, 1993
                                  (UNAUDITED)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                        --------------------------            PRO FORMA
                                                          SOUTHERN      MISSOURI    ------------------------------
                                                           UNION        BUSINESS      ADJUSTMENTS       COMBINED
                                                        ------------  ------------  ----------------  ------------
                                                                          (THOUSANDS OF DOLLARS)
<S>                                                     <C>           <C>           <C>               <C>
Property, plant and equipment.........................  $    372,757  $    416,703  $     11,950(a)   $    811,410
                                                                                          10,000(b)
Less accumulated depreciation and amortization........      (141,546)     (125,460)                       (267,006)
                                                        ------------  ------------  ----------------  ------------
                                                             231,211       291,243        21,950           544,404
Additional purchase cost assigned to utility plant,
 net..................................................        92,645                      44,437(c)        137,082
                                                        ------------  ------------  ----------------  ------------
  Net property, plant and equipment...................       323,856       291,243        66,387           681,486
Current assets........................................        40,440        17,563                          58,003
Deferred charges and other assets.....................        34,751        10,398        17,792(d)        104,581
                                                                                          41,640(e)
                                                        ------------  ------------  ----------------  ------------
    Total.............................................  $    399,047  $    319,204  $    125,819      $    844,070
                                                        ------------  ------------  ----------------  ------------
                                                        ------------  ------------  ----------------  ------------

<CAPTION>
                                       STOCKHOLDERS' EQUITY AND LIABILITIES
<S>                                                     <C>           <C>           <C>               <C>
Common stockholders' equity:
  Common stock........................................  $      5,304                $      2,000(f)   $      7,304
  Premium on capital stock............................       144,925                      47,500(f)        192,425
  Retained earnings...................................           492                                           492
  Less treasury stock, at cost........................          (794)                                         (794)
  Equity in net assets acquired.......................                $    288,181      (288,181)(g)
                                                        ------------  ------------  ----------------  ------------
  Total common stockholders' equity...................       149,927       288,181      (238,681)          199,427
Long-term debt........................................        89,122                     475,000(h)        479,122
                                                                                         (50,000)(h)
                                                                                         (25,000)(h)
                                                                                         (10,000)(h)
Current liabilities and current maturities of
 long-term debt.......................................       128,399        25,174        15,166(i)         89,433
                                                                                         (28,256)(j)
                                                                                         (31,050)(j)
                                                                                         (20,000)(k)
Deferred credits and other liabilities................        10,384         5,849        38,640(l)         54,873
Accumulated deferred income taxes.....................        21,215                                        21,215
Commitments and contingencies.........................       --            --                              --
                                                        ------------  ------------  ----------------  ------------
    Total.............................................  $    399,047  $    319,204  $    125,819      $    844,070
                                                        ------------  ------------  ----------------  ------------
                                                        ------------  ------------  ----------------  ------------
</TABLE>

See accompanying notes to unaudited pro forma combined condensed balance sheet.

                                       14
<PAGE>
                             SOUTHERN UNION COMPANY

         NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET

   
    The following are adjustments to the Pro Forma Balance Sheet as of September
30,  1993 to reflect (i) the issuance of 2,000,000 shares of Common Stock in the
Rights Offering, (ii) the completion of the Missouri Acquisition, including  the
sale  of Senior Debt Securities to fund  such Acquisition, and (iii) the sale of
Senior Debt Securities to refinance certain short-term debt, current  maturities
of  long-term debt  and certain long-term  debt outstanding as  of September 30,
1993:
    

(a) Reflects  the purchase  accounting  adjustments of  $4.4 million  to  record
    acquired  assets  at  their  estimated  fair  market  value,  and  estimated
    additional expenditures to purchase  non-transferable leases on  automobiles
    of $4.3 million and data processing equipment and software of $3.3 million.

(b) Reflects the recording of the purchase of estimated net capital expenditures
    to be incurred by the Missouri Business subsequent to September 30, 1993 and
    prior to closing as per the Missouri Asset Purchase Agreement.

(c) Reflects the estimated excess of the purchase price over the historical book
    carrying  value of  the assets  acquired of  the Missouri  Business of $44.4
    million.

   
(d) Reflects the capitalization of estimated debt issuance costs associated with
    the sale of  $475.0 million of  Senior Debt Securities  and premiums on  the
    early extinguishment of $85.0 million of long-term debt to be amortized on a
    straight line basis over the life of the new debt. See note (h) below.
    

(e)  Reflects  the  recording  of  (i)  a  regulatory  asset  of  $38.6  million
    representing  the  deferral  of   the  actuarially  calculated   accumulated
    post-retirement  benefit obligation assumed in the  purchase and (ii) a $3.0
    million contribution to the Missouri Business' employees' qualified  defined
    benefit  plans  in excess  of the  minimum  required contribution  under the
    Internal Revenue  Code Section  412, as  determined by  the plans'  actuary,
    pursuant  to the  MPSC Stipulation. See  note (l) below  and the "Accounting
    Pronouncements" note included  in Notes  to the  Missouri Business'  Interim
    Financial Statements included elsewhere herein.

(f)  Reflects Southern Union's  receipt of $50.0 million  in gross proceeds from
    the completion of the  Rights Offering, less  approximately $0.5 million  in
    estimated  stock issuance costs,  assuming 2,000,000 shares  of Common Stock
    are issued in the Rights Offering at $25.00 per share.

(g) Reflects the elimination of the  equity in the Missouri Business net  assets
    acquired.

   
(h) Reflects the sale of Senior Debt Securities totalling $475.0 million and the
    refinancing  of $50.0 million of 10.5% debentures due 2017, $10.0 million of
    9.45% notes due 2004 and $25.0 million of 10% notes due 2012.
    

(i) Reflects the  recording of  certain liabilities of  $15.2 million  resulting
    from the acquisition transactions including the purchase of non-transferable
    leases  on  automobiles of  $4.3 million,  the  purchase of  data processing
    equipment and software of $3.3 million,  a $3.0 million contribution to  the
    Missouri  Business' employees' qualified defined benefit plans (see note (e)
    above), and  the  recording  of severance  accruals  of  approximately  $2.4
    million  and other  estimated liabilities and  contingencies associated with
    the acquisition of approximately $2.2 million.

   
(j)  Reflects  the utilization of  a portion of  the proceeds from  the sale  of
    Senior  Debt  Securities to  retire  borrowings on  the  Company's revolving
    credit facility, including borrowings  of $31.1 million  for the Rio  Grande
    Acquisition and borrowings used for the purchase and redemption of preferred
    stock.
    

(k)  Reflects the  utilization of  a portion  of the  proceeds from  the sale of
    Senior Debt Securities for  the repayment of  certain current maturities  of
    long-term debt.

(l)   Reflects  the   recording  of   the  actuarially   calculated  accumulated
    post-retirement benefit obligation of $38.6 million. See note (e) above.

                                       15
<PAGE>
                   SELECTED HISTORICAL FINANCIAL INFORMATION

THE COMPANY

    The  following table  sets forth  selected historical  financial information
with respect to the Company for  the periods indicated. This information  should
be  read in conjunction with the Company's Consolidated Financial Statements and
notes thereto included in  the 1992 Form  10-K and the  Third Quarter Form  10-Q
that are incorporated by reference into this Prospectus. The selected historical
financial  information for each of  the five years in  the period ended December
31, 1992 has been  derived from financial statements  that have been audited  by
the   Company's  independent  accountants.  The  selected  historical  financial
information for the  nine-month periods ended  September 30, 1993  and 1992  has
been  derived from  financial statements that  are unaudited, but  which, in the
opinion of management, include all adjustments necessary for a fair presentation
of the financial position and results of operations for such periods. Results of
the nine-month periods ended September 30,  1993 and 1992 are not indicative  of
results  for the full  year due to  the seasonal nature  of the gas distribution
business.

    During 1992, the Company acquired the natural gas distribution facilities in
Nixon, Texas. During  1991, the  Company acquired natural  gas distribution  and
transmission facilities serving: an area in south Texas, including the cities of
Lockhart,  Luling, Cuero,  Shiner, Yoakum and  Gonzales; the west  Texas city of
Andrews; and  the north  Texas  cities of  Mineral Wells,  Weatherford,  Graham,
Breckenridge,  Millsap,  Jacksboro  and surrounding  communities.  In  1991, the
Company sold the assets of its Arizona gas utility operations. Because of  these
acquisitions  and the divestiture in 1992 and 1991, the results of operations of
the Company for the years ended December 31, 1992 and 1991 are not comparable to
prior periods.

<TABLE>
<CAPTION>
                                                                                                             NINE MONTHS
                                                                                                                ENDED
                                                                 YEAR ENDED DECEMBER 31,                  SEPTEMBER 30, (A)
                                                  -----------------------------------------------------  --------------------
                                                    1988       1989       1990       1991       1992       1992       1993
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                      (PRE-MERGER)          (DOLLARS IN THOUSANDS)
<S>                                               <C>        <C>        <C>        <C>        <C>        <C>        <C>
Income statement data:
  Operating revenues............................  $ 191,428  $ 197,460  $ 199,865  $ 200,261  $ 192,445  $ 126,904  $ 135,868
  Gas purchase costs............................    110,076    115,921    118,551    109,238    102,918     62,840     67,866
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Operating margin..............................     81,352     81,539     81,314     91,023     89,527     64,064     68,002
  Total operating expenses......................     78,524     65,381     70,242     77,179     72,165     53,849     55,355
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Net operating revenues......................  $   2,828  $  16,158  $  11,072  $  13,844  $  17,362  $  10,215  $  12,647
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Earnings (loss) before income taxes and
   discontinued operation.......................  $  (9,427) $   2,379  $   1,413  $  11,308  $  10,831  $   4,380  $   4,817
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Earnings (loss) from continuing operations
   available for common stock...................  $  (8,266) $  (1,649) $  (3,668) $   2,173  $   3,891  $     298  $   2,149
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Net earnings (loss) available for common
   stock........................................  $ (12,564) $  (1,649) $  (3,668) $     987  $   1,445  $   1,686  $   2,149
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>

<TABLE>
<CAPTION>
                                                                      DECEMBER 31,                        SEPTEMBER 30, (B)
                                                  -----------------------------------------------------  --------------------
                                                    1988       1989       1990       1991       1992       1992       1993
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                      (PRE-MERGER)          (DOLLARS IN THOUSANDS)
<S>                                               <C>        <C>        <C>        <C>        <C>        <C>        <C>
Balance sheet data:
  Property, plant and equipment, net............  $ 213,207  $ 219,027  $ 323,187  $ 278,881  $ 285,505  $ 281,498  $ 323,856
  Total assets..................................    341,108    316,186    379,856    369,783    377,167    360,116    399,047
  Short-term debt and current maturities of
   long-term debt...............................     32,172      9,239     10,098      2,385     14,360      9,672     90,947
  Long-term debt, less current maturities.......    106,061    104,922    103,783    110,482    109,464    109,743     89,122
  Preferred stock...............................     25,000     25,000     25,000     25,000     24,900     25,000         --
  Common stockholders' equity...................     85,452     83,207    146,332    147,356    148,003    148,249    149,927
<FN>
- ------------------------------
(a)   The Company's  operations  are  seasonal in  nature,  with  a  significant
      percentage  of  its  annual  revenues and  earnings  occurring  during the
      traditional heating-load months.  Results of  operations historically  are
      most  favorable in the first quarter (the  three months ended March 31) of
      the Company's  fiscal year  with  results of  operations being  next  most
      favorable in the fourth quarter. Results for the second and third quarters
      are typically less favorable. Accordingly, the results of operations of an
      interim period are not necessarily indicative of results of operations for
      an  annual period. Earnings from  continuing operations for the nine-month
      periods ended September  30, 1993 and  1992 reflect certain  non-recurring
      income  items. In  addition, earnings  from continuing  operations for the
      nine months ended September  30, 1993 were  negatively impacted by  warmer
      than normal weather during the 1993 winter months in those areas served by
      Southern Union Gas.
(b)   The  balance  sheet information  at September  30,  1993 reflects  the Rio
      Grande Acquisition. Rio Grande was acquired for approximately  $31,050,000
      on   September  30,  1993.  See  the  Third  Quarter  Form  10-Q  that  is
      incorporated by reference into this Prospectus.
</TABLE>

                                       16
<PAGE>
MISSOURI BUSINESS

    The following  table sets  forth selected  historical financial  information
with   respect  to  the  Missouri  Business  for  the  periods  indicated.  This
information  should  be  read  in  conjunction  with  the  Historical  Financial
Statements of the Missouri Business and notes thereto included elsewhere in this
Prospectus.  The selected historical financial information for each of the three
years in the  period ended  December 31, 1992  has been  derived from  financial
statements  that have been audited by the Company's independent accountants. The
selected historical  financial  information  for the  nine-month  periods  ended
September  30, 1993 and 1992 has been derived from financial statements that are
unaudited, but which, in the opinion  of management of the Company, include  all
adjustments,  consisting of normal  recurring adjustments, necessary  for a fair
presentation of the financial position and operations for such periods.  Results
for  the nine-month periods ended September 30, 1993 and 1992 are not indicative
of results for the full year due to the seasonal nature of the gas  distribution
business.

<TABLE>
<CAPTION>
                                                                                               NINE MONTHS
                                                         YEAR ENDED DECEMBER 31,         ENDED SEPTEMBER 30, (A)
                                                  -------------------------------------  ------------------------
                                                     1990         1991         1992         1992         1993
                                                  -----------  -----------  -----------  -----------  -----------
                                                                      (DOLLARS IN THOUSANDS)
<S>                                               <C>          <C>          <C>          <C>          <C>
Income statement data:
  Operating revenues............................  $   302,163  $   307,667  $   297,956  $   201,007  $   233,291
  Gas purchase costs............................      202,229      193,510      183,001      121,130      141,241
                                                  -----------  -----------  -----------  -----------  -----------
  Operating margin..............................       99,934      114,157      114,955       79,877       92,050
  Total operating expenses......................       94,639      102,334      105,118       78,392       83,934
                                                  -----------  -----------  -----------  -----------  -----------
    Net operating revenues......................  $     5,295  $    11,823  $     9,837  $     1,485  $     8,116
                                                  -----------  -----------  -----------  -----------  -----------
                                                  -----------  -----------  -----------  -----------  -----------
  Earnings (loss) before income taxes...........  $    (2,543) $     1,833  $     2,220  $    (4,279) $     3,585
                                                  -----------  -----------  -----------  -----------  -----------
                                                  -----------  -----------  -----------  -----------  -----------
  Net earnings (loss)...........................  $      (950) $     1,310  $     1,515  $    (2,862) $     2,588
                                                  -----------  -----------  -----------  -----------  -----------
                                                  -----------  -----------  -----------  -----------  -----------
</TABLE>

<TABLE>
<CAPTION>
                                                              DECEMBER 31,                    SEPTEMBER 30,
                                                  -------------------------------------  ------------------------
                                                     1990         1991         1992         1992         1993
                                                  -----------  -----------  -----------  -----------  -----------
                                                                      (DOLLARS IN THOUSANDS)
<S>                                               <C>          <C>          <C>          <C>          <C>
Balance sheet data:
  Acquired assets...............................  $   299,777  $   311,635  $   344,136  $   290,013  $   319,204
  Assumed liabilities...........................       85,934       76,129       68,635       40,589       31,023
<FN>
- ------------------------
(a)   The  operations of  the Missouri Business  are seasonal in  nature, with a
      significant percentage  of  its  annual revenues  and  earnings  occurring
      during the traditional heating-load months. Accordingly, the operations of
      an  interim period  are not  necessarily indicative  of operations  for an
      annual period. Net earnings for the  nine months ended September 30,  1993
      were positively impacted by the colder than normal weather during the 1993
      winter heading-load months in those areas served by the Missouri Business.
</TABLE>

                                       17
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

BACKGROUND

    The  Company  is primarily  engaged in  various aspects  of the  natural gas
business. The  Company's  principal line  of  business is  the  distribution  of
natural  gas as a public  utility through Southern Union  Gas, a division of the
Company. Southern  Union  Gas,  which  accounts for  approximately  88%  of  the
Company's  total revenues,  presently serves  approximately 475,000 residential,
commercial, industrial, agricultural and other customers in the States of  Texas
(including  the  cities  of Austin,  Brownsville,  El Paso,  Galveston  and Port
Arthur) and  Oklahoma.  See  "Business  -- Southern  Union  Gas."  The  Missouri
Acquisition  will  add approximately  460,000  customers in  147  communities in
western Missouri.  See  "The Missouri  Acquisition"  and "Business  --  Missouri
Business."  The Company (through the Southern Union subsidiaries indicated) also
markets natural gas to end-users through Mercado Gas Services, Inc. ("Mercado"),
sells natural  gas as  a vehicular  fuel  and converts  vehicles to  operate  on
natural  gas through  Southern Union  Econofuel Company  ("Econofuel"), operates
natural gas pipeline systems through Southern Transmission Company  ("Southern")
and  Western  Gas  Interstate  Company  ("WGI")  and  sells  commercial  gas air
conditioning and  other gas-fired  engine-driven applications  through  Southern
Union  Energy  Products  and  Services  Company  ("SUEPASCO").  Southern Union's
subsidiary, Lavaca Realty Company ("Lavaca"),  holds investments in real  estate
that  primarily relate to the Company's  energy business. See "Business -- Other
Company Operations."

    The Company's revenues and earnings  are primarily dependent upon gas  sales
volumes  and gas service rates.  Gas purchase costs generally  do not affect the
Company's earnings because such costs  are passed through to customers  pursuant
to  purchase gas adjustment  clauses. Accordingly, while changes  in the cost of
gas may cause the  Company's operating revenues  to fluctuate, operating  margin
(defined  as  operating  revenues  less gas  purchase  costs)  is  generally not
affected  by  gas  purchase  cost  increases  or  decreases.  See  "Business  --
Regulation."

    Gas sales volumes fluctuate as a function of seasonal weather impact and the
size of the Company's customer base, which is affected by competitive factors in
the  industry  as well  as economic  development and  residential growth  in its
service areas. Gas service rates, which consist of a monthly fixed charge and  a
gas  usage charge, are established by regulatory authorities and are intended to
permit utilities to recover operating, administrative and finance costs, and  to
earn a return on equity. The monthly fixed charge provides a base revenue stream
while  the usage charge increases the  Company's revenues and earnings in colder
weather when natural gas usage increases. See "Business -- Regulation."

    In recent years weather variances have significantly impacted the  Company's
results  of operations. Average temperatures in the Company's service areas have
remained above the 30 year normal temperature during the peak heating season. To
mitigate the  impact  of  these  seasonal  variances,  Southern  Union  Gas  has
requested   and  received   approval  for   weather  normalization   clauses  in
jurisdictions amounting to approximately half of its present utility  investment
in  Texas  and Oklahoma.  These  clauses allow  for  rate adjustments  that help
stabilize the utility's customers' monthly bill and the Company's earnings  from
the varying effects of weather.

                                       18
<PAGE>
    The  following table  summarizes the weather  conditions as  a percentage of
normal, based on a 30-year average, during the last three years and for the nine
months ended September 30, 1993.

<TABLE>
<CAPTION>
                                                                                                  NINE MONTHS
                                                               YEAR ENDED DECEMBER 31,               ENDED
                                                        -------------------------------------    SEPTEMBER 30,
                                                           1990         1991         1992            1993
                                                           -----        -----        -----     -----------------
<S>                                                     <C>          <C>          <C>          <C>
Southern Union Gas....................................         87%          95%          91%             83%
Missouri Business.....................................         89%          95%          90%            108%
- ------------------------
Information  with  respect  to  weather  conditions  is  provided  by  the  National  Oceanic  and   Atmospheric
Administration.  Percentages of normal are based on the weighted  averages (based on number of customers) of the
weather conditions in the service areas indicated.
</TABLE>

    Revenues from residential customers are  stable. Over the last three  years,
an  average  of 59%  of  Southern Union  Gas' revenues  came  from sales  to its
residential customers while  an average  of 70% of  Missouri Business'  revenues
came  from  sales  to its  residential  customers. The  Company's  revenues from
residential customers have grown as a result of its acquisitions. The growth  of
its residential base combined with marketing efforts aimed at large volume users
have  provided overall gains in sales volumes in recent years. The Company plans
to continue these marketing efforts.

THE COMPANY -- RESULTS OF OPERATIONS

    The following discussion of  the Company's results  of operations should  be
read  in conjunction  with the  Company's Consolidated  Financial Statements and
notes thereto included in  the 1992 Form  10-K and the  Third Quarter Form  10-Q
that are incorporated by reference into this Prospectus.

NINE MONTHS ENDED SEPTEMBER 30, 1993 AND 1992

    NET EARNINGS AVAILABLE FOR COMMON STOCK

    The  Company recorded net earnings available  for common stock of $2,149,000
for the  nine  months ended  September  30, 1993  compared  to net  earnings  of
$1,686,000 for the nine months ended September 30, 1992, an increase of $463,000
or  27%.  The increase  in net  earnings is  due principally  to the  receipt of
several rate  increases during  the past  year including  a $372,000  annualized
increase  in Galveston effective August 12, 1992, a $777,000 annualized increase
in the Company's  South Texas service  area effective February  10, 1993, and  a
$1,700,000 annualized increase in Austin effective July 1, 1993.

    The Company also recorded a non-recurring accounting adjustment, net of tax,
in  the  third quarter  of 1993  of  approximately $1,168,000  to reverse  a tax
reserve upon the final settlement of prior period federal income tax audits.  In
July  1993, the Company paid the  Internal Revenue Service ("IRS") approximately
$1,266,000 in settlement for  federal income taxes and  interest related to  the
tax years 1984 through 1989. The Company had previously estimated and accrued an
amount  for the tax  deficiencies and related  interest and, as  a result of the
settlement with the  IRS for  a lesser  amount, a  non-recurring adjustment  was
recorded to reverse the tax reserve in excess of the payment made.

    Net  earnings  for  the  nine  months ended  September  30,  1993  were also
positively impacted  by  the  reduction of  payroll  expenses  of  approximately
$762,000  resulting from the  Company's 1993 early  retirement program which was
finalized during the second quarter of  1993 and the reduction of  approximately
$1,032,000  of preferred dividends due to the retirement of the Company's Series
A 10% Cumulative Preferred Stock  in March and June  1993. The net earnings  for
the nine months ended September 30, 1993 were negatively impacted by warmer than
normal  weather during the 1993 winter heating  season, which was 83% of normal,
and by  an increase  in operating,  maintenance and  general expense  reflecting
severance  costs  of  $597,000  from  the  Company's  early  retirement  program
described above. Net earnings for the nine months ended September 30, 1992  were
positively  impacted  by  a  nonrecurring  gain  of  $950,000  resulting  from a
litigation settlement.

                                       19
<PAGE>
    Earnings  from  continuing  operations  available  for  common  stock   were
$2,149,000 for the nine months ended September 30, 1993 compared to $298,000 for
the  nine  months  ended  September  30,  1992.  Earnings  from  Southern  Union
Exploration Company, a  discontinued operation sold  effective January 1,  1993,
were  $1,388,000 for the nine months ended September 30, 1992 compared to nil in
1993.

    OPERATING REVENUES

    Operating revenues were $135,868,000 for the nine months ended September 30,
1993, an increase of 7% compared to operating revenues of $126,904,000 in  1992.
Gas   purchase  costs  for  the  nine  months  ended  September  30,  1993  were
$67,866,000, an  increase of  8%,  compared to  $62,840,000 in  1992.  Operating
margin increased approximately $3,938,000 or 6% in 1993. Both operating revenues
and  gas purchase costs  increased in the  nine months ended  September 30, 1993
primarily as a result of  a 26% increase in the  average cost of gas from  $2.04
per Mcf in 1992 to $2.58 in 1993 which was partially offset by a 16% decrease in
gas  sales volumes from 35,007 MMcf in 1992  to 29,360 MMcf in 1993. The decline
in gas sales volumes reflected a decline of 5,270 MMcf in gas sales by  Mercado,
the  Company's marketing  subsidiary, as a  result of the  Company's decision to
reduce sales to off system markets because of low margins.

YEARS ENDED DECEMBER 31, 1992, 1991 AND 1990

    NET EARNINGS AVAILABLE FOR COMMON STOCK

    The Company's net  earnings available for  common stock for  the year  ended
December 31, 1992 increased 46% to $1,445,000 compared to $987,000 in 1991 and a
net  loss of  $2,150,000 in  1990. The Company's  1992 increase  in net earnings
available for common stock was primarily  due to reductions in operating  costs,
which  significantly  impacted net  operating  revenues. Other  positive factors
affecting net earnings included approximately  $6,900,000 of increases in  rates
and  changes in rate designs  effected during 1992 and  subsequent to the winter
heating season  of  1991,  the  reversal  of  certain  contingency  accruals  of
$2,200,000  recorded in 1990 at the time of the merger, and the recognition of a
gain of approximately  $950,000 resulting  from a  litigation settlement.  These
increases  in  earnings  were  partially  offset  by  warmer  weather  in  1992,
approximately 4% warmer than  1991 and 9% warmer  than normal. In addition,  the
Company recorded a loss from a discontinued operation of $2,446,000 for the year
ended December 31, 1992, which included net earnings from oil and gas operations
of  $1,954,000  offset  by an  estimated  loss  on disposal  of  $4,400,000. See
"Business Held for Sale"  in the Notes to  the Company's Consolidated  Financial
Statements included in the 1992 Form 10-K that is incorporated by reference into
this Prospectus.

    The  Company's net  earnings available  for common  stock in  1991 increased
$3,137,000 compared  to 1990.  This  increase was  due principally  to  improved
operating margins resulting from the impact of increases in rates and changes in
rate  design effected during 1991 and subsequent to the winter heating season in
1990; colder weather in  1991, which was approximately  7% colder than 1990  but
approximately 5% warmer than normal; and the recognition of a tax benefit on the
sale  of real  estate of approximately  $1,300,000. These  positive factors were
partially offset  by  increased  depreciation  and  operating,  maintenance  and
general expenses resulting from the acquisition of several distribution systems.
In  1991  the Company  also recorded  a  loss from  a discontinued  operation of
$1,186,000, which included net earnings from operations of $1,064,000 offset  by
a valuation adjustment of $2,250,000.

    OPERATING REVENUES

    Total   operating  revenues  in  1992,  1991  and  1990  were  $192,445,000,
$200,261,000 and $199,865,000, respectively. Revenues are affected by the  level
of  Southern Union Gas'  sales volumes and  by the pass-through  of increases or
decreases in  gas  purchase costs  through  Southern Union  Gas'  purchased  gas
adjustment  clauses, as  well as through  rate increases.  Revenues decreased in
1992 due to the sale of the Arizona system in November 1991, warmer than  normal
weather  in  1992, and  a 19%  decrease in  the gas  cost billed  to residential
customers. These negative factors were partially offset by an increase in  sales
in  1992 of  approximately $16,400,000  due to  Mercado's expanding  markets, an

                                       20
<PAGE>
increase in rates  of approximately  $6,900,000, both described  above, and  the
first  full year of operations  provided by the acquisition  of the Brazos River
Gas  Company  and  the   Andrews  Gas  Company   which  increased  revenues   by
approximately  $6,400,000. The  sale of  the Arizona  system decreased operating
revenues by  approximately $29,000,000  in  1992 as  compared to  1991.  Weather
during  the winter heating season of 1992 was  81% of normal and was also one of
the warmest winter seasons in the Company's history.

    The increase  in  operating  revenues  in  1991  as  compared  to  1990  was
negligible  after  consideration of  the impact  of several  offsetting factors.
Operating revenues increased due to changes in rate design and rate increases in
the Austin, Texas and Arizona service areas, colder weather experienced in  1991
and  an increase in  the average customer  base. In addition,  the effect of the
acquisition of the South Texas properties, Andrews Gas Company and Brazos  River
Gas  Company  during  1991  contributed an  additional  $7,400,000  to operating
revenues during the year ended December 31, 1991. Offsetting factors included  a
decrease  of approximately $5,700,000 in operating  revenues as compared to 1990
as a result  of the sale  of the Arizona  system and a  decrease in the  average
price per Mcf of gas sales billed.

    GAS SALES AND TRANSPORTATION VOLUMES

    Gas sales volumes billed in 1992, 1991, and 1990 totaled 51,147 MMcf, 44,942
MMcf  and 43,599 MMcf at  an average Mcf sales price  of $3.58, $4.39 and $4.41,
respectively. Gas sales volumes fluctuate as a function of weather and  customer
base. The increase in gas sales volumes was due in part to the expanding markets
of  Mercado to  off-system customers  during 1992.  This increase  was partially
offset by  the weather  patterns  in Southern  Union  Gas' service  areas  which
averaged  9% warmer than normal in 1992, 5%  warmer than normal in 1991, and 13%
warmer than normal in 1990. The average customer bases served in 1992, 1991  and
1990 were approximately 394,000, 428,000 and 407,000, respectively.

    Gas transportation volumes in 1992, 1991 and 1990 totaled 25,438 MMcf, 8,608
MMcf  and 5,592 MMcf at an average transportation rate per Mcf of $.23, $.66 and
$.80, respectively. Transportation  volumes increased significantly  in 1992  as
compared  to  1991 as  a  result of  WGI's  transported volumes  into  Mexico of
approximately 15,000 MMcf during 1992. Volumes  also increased in response to  a
decrease in the average transportation rate per Mcf in 1992 and 1991 as compared
to  1990 as the Company increased sales  to existing customers and attracted new
customers. The Company's transportation rate per Mcf decreased due to  increased
competition in pipeline transportation services.

    GAS PURCHASE COSTS

    Gas  purchase costs in  1992, 1991 and  1990 were $102,918,000, $109,238,000
and $118,551,000,  respectively. The  decrease in  costs in  1992 was  due to  a
decrease  in the  average spot market  price of  natural gas, a  decrease in the
customer base resulting from  the sale of the  Arizona system in November,  1991
and gas sales customers switching to transportation service, thereby essentially
reducing  the cost of  gas. The average  gas purchase cost  incurred by Southern
Union Gas was $2.01 per Mcf in 1992, $2.43 in 1991 and $2.72 in 1990. The impact
of the decrease in 1992 and 1991 gas prices was partially offset by an  increase
in volumes described above.

    OPERATING, MAINTENANCE AND GENERAL EXPENSES

    Operating,  maintenance and  general expenses  were $46,313,000, $49,022,000
and $45,683,000 in 1992, 1991 and 1990, respectively. During 1992 these expenses
decreased $2,709,000  compared  to 1991  due  to the  cost  containment  efforts
implemented  by the Company throughout  1992 as well as  the sale of the Arizona
system in  November  1991.  See  "Business --  Business  Strategy  --  Enhancing
Financial  and Operating  Performance." These  factors were  partially offset by
increases in  medical  and  hospitalization expenses.  During  1991,  operating,
maintenance  and general expenses  increased $3,339,000 compared  to 1990 due to
the acquisition  of  gas distribution  systems  and increases  in  employee  and
insurance costs.

                                       21
<PAGE>
    TAXES

    Taxes  other than income taxes reflect  various state and local business and
payroll related taxes. The state and local business taxes are generally based on
gross receipts and investments  in property, plant  and equipment and  fluctuate
accordingly.

    Federal  and state income tax expense in 1992, 1991 and 1990 was $4,440,000,
$6,635,000 and  $1,026,000,  respectively. The  decrease  in taxes  in  1992  as
compared  to 1991  is due principally  to the  sale of the  Arizona system which
occurred in  1991. This  decrease was  partially offset  by the  achievement  of
better overall operating results in 1992. The increase in tax expense in 1991 as
compared  to 1990 was, likewise,  due to the $4,800,000  tax expense incurred in
the sale of the Arizona  system for which a corresponding  gain on the sale  was
also  recognized. See "Taxes  on Income" in the  Notes to Consolidated Financial
Statements included in the 1992 Form 10-K that is incorporated by reference into
this Prospectus.

    DEPRECIATION AND AMORTIZATION EXPENSE

    Depreciation  and  amortization   expense  in  1992,   1991  and  1990   was
$12,737,000,   $13,317,000  and  $10,502,000,   respectively.  The  decrease  in
depreciation expense of $580,000 in 1992 compared to 1991 was due principally to
the sale of the Arizona  system in November 1991 and  was partially offset by  a
full year of depreciation on the acquired gas distribution systems. The increase
of  $2,815,000 in depreciation and amortization expense in 1991 compared to 1990
was due  primarily to  the  increase in  amortization expense  of  approximately
$1,400,000  resulting  from  a  full  year  of  amortization  of  the  amount of
additional purchase  cost  assigned  to utility  plant,  approximately  $450,000
resulting  from  the acquisition  of several  gas distribution  and transmission
facilities, and approximately $500,000 resulting  from a regulatory increase  in
the  depreciation rate. Amortization of the additional purchase cost assigned to
utility plant  has  not been  included  in rates  in  the Company's  major  rate
jurisdictions.

    NET OPERATING REVENUES

    Net  operating  revenues  in  1992,  1991,  and  1990  totaled  $17,362,000,
$13,844,000 and $11,072,000 respectively. The  increase of $3,518,000 or 25%  in
1992  compared to 1991 is  due to increases in rates  and changes in rate design
effected during 1992 and 1991, described above, as well as decreases in each  of
operating,  maintenance and general expenses, taxes  other than income taxes and
depreciation and  amortization.  The  increase  of $2,772,000  or  25%  in  1991
compared  to 1990 is due to the  increase in operating margins resulting from an
increase in revenues and a decrease in gas purchase costs, also described above.

    OTHER INCOME (EXPENSES), NET

    Other income  (expenses), net  in  1992, 1991  and 1990  were  ($6,531,000),
($2,536,000)  and  ($9,659,000),  respectively.  Other  income  (expenses),  net
consists  principally  of  interest   expense  on  the  Company's   consolidated
indebtedness.  The  increase  in other  expenses  in  1992 compared  to  1991 of
$3,995,000 as well as the decrease in expenses from 1991 compared to 1990 is due
principally to the recognition of  the gain of $4,800,000  from the sale of  the
Arizona system in 1991.

    Other  income  items  recorded in  1992  included a  $2,200,000  reversal of
certain contingency accruals recorded at the  time of the 1990 merger that  were
subsequently resolved or settled and a $950,000 gain resulting from a litigation
settlement.  Other income items  recorded in 1991 included  the recognition of a
pre-tax gain on the sale of the Arizona system of $4,800,000.

    Interest expense on short-term debt was $384,000, $697,000, and $594,000  in
1992,  1991 and 1990,  respectively. Average short-term  debt outstanding during
1992, 1991 and 1990 of $5,912,000, $9,184,000 and $4,898,000, respectively,  was
at  an average interest rate of 6.3%, 8.1% and 10.3%, respectively. The variance
in the average amounts outstanding coupled with reduced interest rates  resulted
in the fluctuation in other interest expense in each of the years.

                                       22
<PAGE>
THE MISSOURI BUSINESS -- RESULTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30, 1993 AND 1992

    NET EARNINGS

    The Missouri Business recorded net earnings of $2,588,000 for the nine month
period  ended September 30,  1993 compared to  a net loss  of $2,862,000 for the
nine month  period ended  September  30, 1992.  Net  earnings in  1993  improved
compared  to 1992 primarily  as a result of  significantly colder weather during
the 1993 winter heating season (January through April), which was 108% of normal
compared to 81% of normal in 1992.

    OPERATING REVENUES

    Revenues were $233,291,000 for the nine months ended September 30, 1993,  an
increase of 16% compared to revenues of $201,007,000 in 1992. Gas purchase costs
for  the nine months ended September 30,  1993 were $141,241,000, an increase of
17% compared  to $121,130,000  in 1992.  Both revenues  and gas  purchase  costs
increased in the nine months ended September 30, 1993 primarily as a result of a
21% increase in gas sales volumes due to the significantly colder winter weather
in  1993 described above.  The impact of  the increase in  volumes was partially
offset by a decrease in average purchase  gas costs which were $2.93 per Mcf  in
the  first nine months of 1993 compared to $3.09 in 1992. Gas purchase costs are
passed through to  the customers  through the Missouri  Business' purchased  gas
adjustment ("PGA") clauses.

YEARS ENDED DECEMBER 31, 1992, 1991 AND 1990

    NET EARNINGS

    Missouri  Business'  net  earnings  for the  year  ended  December  31, 1992
increased 16% to $1,515,000  compared to $1,310,000  in 1991 and  a net loss  of
$950,000  in 1990. Net earnings in 1992  improved compared to 1991 primarily due
to the effects  of a $7,300,000  annualized rate increase  effected in  February
1992  in the Missouri Business' service areas. Increased earnings were partially
offset by warmer weather in 1992, which  was 90% of normal and approximately  3%
warmer than 1991.

    Net  earnings in 1991 increased $2,260,000  compared to 1990 due principally
to colder weather in 1991  which was 95% of  normal and approximately 7%  colder
than  1990. Increased  earnings in  1991 were  partially offset  by increases in
interest expense allocated  to the  Missouri Business by  Western Resources  and
increases   in  operating,   maintenance  and   general  and   depreciation  and
amortization expenses.

    OPERATING REVENUES

    Revenues  in  1992,  1991  and  1990  were  $297,956,000,  $307,667,000  and
$302,163,000,  respectively. Revenues are affected by the level of sales volumes
and by the pass-through of increases or decreases in gas purchase costs  through
the  Missouri Business' PGA  clauses. Revenues decreased 3%  in 1992 compared to
1991 due to a reduction in sales volumes of approximately 4% resulting from  the
warmer  than normal  weather in  1992 described above.  The effect  of the sales
volume decrease in 1992  was partially offset by  the rate increase effected  in
February 1992, also described above.

    Revenues  increased  approximately 2%  in 1991  compared to  1990 due  to an
increase in sales volumes of approximately 7% resulting from the colder  weather
in  1991 described above.  The effect of  the sales volume  increase in 1991 was
partially offset by an 11% decrease in the average gas purchase cost per Mcf.

    GAS PURCHASE COSTS

    Gas purchases in  1992, 1991  and 1990 were  $183,001,000, $193,510,000  and
$202,229,000, respectively. Gas purchase costs are a function of weather related
volumes and the average purchase gas cost per Mcf incurred. Average purchase gas
costs incurred by the Missouri Business was $2.97 per Mcf in 1992, $3.00 in 1991
and  $3.39  in 1990.  Gas purchases  decreased  in 1992  due principally  to the
effects of warmer than normal weather, described  above, and as a result of  the
decrease in average gas

                                       23
<PAGE>
costs  per Mcf. Gas purchase costs also decreased in 1991 as compared to 1990 as
a result of  an 11%  decrease in  the average purchase  gas cost  per Mcf.  This
decrease  was partially  offset by a  weather related increase  in sales volumes
described above.

    OPERATING, MAINTENANCE AND GENERAL EXPENSES

    Operating, maintenance and  general expenses  were $66,908,000,  $64,829,000
and $59,311,000 in 1992, 1991 and 1990, respectively. Expenses increased in 1992
compared  to 1991  by approximately 3%  due mainly to  inflationary increases in
operating costs and  salaries. Expenses increased  in 1991 compared  to 1990  by
approximately 9% due to increases in rental expenses as a result of added office
space, cast iron main line repairs, and employee benefits.

    DEPRECIATION AND AMORTIZATION EXPENSES

    Depreciation   and  amortization  expense   in  1992,  1991   and  1990  was
$13,172,000,  $11,628,000  and   $9,730,000,  respectively.   The  increase   in
depreciation  expense of  $1,544,000 or  13% in  1992 compared  to 1991  and the
increase of $1,898,000 or 20% in 1991  compared to 1990 was due to increases  in
plant  resulting from the effects of  capital expenditures including the capital
expenditures incurred  for the  service line  replacement program  initiated  in
1989.  Service line replacement capital expenditures in 1992, 1991 and 1990 were
approximately $22,200,000, $19,000,000, and $14,200,000, respectively.

    OTHER INCOME (EXPENSES), NET

    Other income  (expenses), net  in  1992, 1991  and 1990  were  ($7,617,000),
($9,990,000)  and ($7,838,000),  respectively. Other  income (expenses) consists
principally of interest expense allocated  by Western Resources to the  Missouri
Business  based on  its consolidated interest  expense. The  variance in Western
Resources average debt balance outstanding coupled with fluctuations in  average
interest  rates resulted in fluctuations in interest expense incurred by Western
Resources and ultimately allocated to the Missouri Business. Western  Resources'
weighted average interest rate was 7.6% in 1992, 8.0% in 1991 and 8.4% in 1990.

    Other,  net  includes  the  deferral  and  amortization  of  interest  costs
associated with the  service line  replacement program.  Pursuant to  accounting
orders issued by the MPSC, the Missouri Business was authorized to defer service
line  replacement program costs including  depreciation expense, property taxes,
and related  interest charges  for subsequent  recovery in  future rates.  Costs
incurred  from November 1989 through May 1990 were deferred and amortized over a
three year period from May 1990 through April 1993. Additionally, costs incurred
from July 1991 through September 1993 were also deferred and will be included in
rate base and  amortized in the  cost of  service beginning October  1993 for  a
period  of 20 years. Other, net in 1992, 1991 and 1990 includes the net deferral
(amortization) of interest  costs incurred  in connection with  this program  of
approximately $1,388,000, ($630,000), and $604,000, respectively. The accounting
treatment  described above, in effect, matches  the costs incurred in connection
with the service line replacement  program with related revenues collected  from
customers as a result of approved increases in rates.

FUTURE CAPITAL NEEDS AND RESOURCES

    The  Company  has needs  for new  funds  beyond those  required to  fund the
pending Missouri Acquisition and desires  to refinance certain short-term  debt.
The Company also intends to refinance certain of its outstanding debt securities
which  mature  in  June  1994  in  order  to  extend  the  maturity  date. While
management's decision  not to  pay cash  dividends is  a significant  source  of
capital for the Company's present and future operations, the Company may require
additional  financing to fund  the seasonal nature of  the Company's gas utility
operations and the future growth of its businesses.

    The Company has  used its  revolving credit  facility, internally  generated
funds,  and long-term debt to provide  funding for its seasonal working capital,
continuing construction programs,  operational requirements, preferred  dividend
requirements,  and periodic acquisitions. During  the three years ended December
31, 1992, Southern Union spent approximately $77,000,000 on capital projects. Of
that total, approximately $59,000,000  was incurred on  normal expansion of  its
distribution  system  as well  as relocation  and replacement  and approximately
$18,000,000 was incurred for the acquisition

                                       24
<PAGE>
of distribution operations. In  addition, approximately $6,500,000 was  incurred
for  the purchase  of real  estate. For  the year  ended December  31, 1993, the
Company spent approximately $16,000,000  for capital expenditures, exclusive  of
any  acquisitions of other natural  gas distribution properties, which primarily
has been used to fund normal distribution system replacement and expansion.  For
the year ended December 31, 1993, capital expenditures for the Missouri Business
were  approximately $38,000,000.  See "Management's  Discussion and  Analysis of
Financial Condition and Results  of Operations --  Investing Activities" in  the
1992 Form 10-K that is incorporated by reference in this Prospectus.

    On  September 30, 1993,  Southern Union entered into  a new revolving credit
facility with  a three  year term  (the "Revolving  Credit Facility")  initially
underwritten by Texas Commerce Bank, N.A. for $80,000,000. On November 15, 1993,
the  Revolving Credit Facility  was syndicated to five  additional banks and the
aggregate amount  available  to  be  borrowed  was  increased  to  $100,000,000.
Borrowings  under  the  Revolving  Credit Facility  are  available  for Southern
Union's working capital and letter of credit requirements. The Revolving  Credit
Facility  can  also be  used in  part, but  not to  exceed $40,000,000,  to fund
acquisitions and capital expenditures and it provided the funds to complete  the
Rio Grande Acquisition. The Revolving Credit Facility contains certain financial
covenants  that, among  other things, restrict  cash and  asset dividends, share
repurchases, certain  investments  and  additional debt.  The  Revolving  Credit
Facility is currently unsecured. Under certain conditions involving the issuance
of  secured debt of Southern Union,  the Revolving Credit Facility automatically
would become collateralized by a first priority lien on substantially all of the
accounts receivable,  inventory  and  certain related  contract  rights  of  the
Company.

    On  July  9,  1993 the  Company  entered  into the  Missouri  Asset Purchase
Agreement with Western Resources,  pursuant to which the  Company has agreed  to
purchase  certain  Missouri natural  gas  distribution operations.  The purchase
price payable at  closing is  $327,940,000 in  cash, to  be adjusted  as of  the
closing date to reflect permitted capital expenditures and depreciation relating
to  the Missouri Business  since March 31,  1993 and accounts  receivable net of
accounts payable as  of closing. The  actual purchase price  will be based  upon
Western  Resources' books  and records  as of the  closing date  of the Missouri
Acquisition. Pursuant  to the  MPSC Stipulation,  the additional  purchase  cost
assigned  to  utility  plant  totalling  approximately  $44,000,000  may  not be
included in rate base nor its amortization in cost of service. In addition,  the
Missouri  Business' rate base included in any  filing for an increase in non-gas
rates completed in the next ten years will be reduced initially by  $30,000,000.
This  rate  base adjustment  will be  reduced annually  by $3,000,000  over this
ten-year period. Based  on the  March 31, 1993  unaudited financial  information
provided  to the  Company prior  to the signing  of the  Agreement, the adjusted
purchase price  for  the  Missouri Acquisition  would  have  been  approximately
$360,000,000.  The Company presently  expects the Missouri  Acquisition to close
during the first quarter of 1994. See "The Missouri Acquisition."

   
    On December 31, 1993 the Company completed the sale of $50,000,000 of Common
Stock in the Rights Offering. The net proceeds from the sale of Common Stock  in
the  Rights Offering were used to  repay borrowings from the Company's Revolving
Credit Facility used  to purchase Rio  Grande and subsequently  will be used  to
partially  fund  the  Missouri  Acquisition  and  provide  working  capital  for
operations. Proceeds from the sale of Senior Debt Securities, when added to  the
proceeds  of  the  Rights Offering,  will  be  sufficient to  fund  the Missouri
Acquisition, refinance a  portion of  the Company's outstanding  balance on  its
Revolving  Credit  Facility,  and  refinance  the  $20,000,000  balance  of  the
Company's 10 1/8% notes due 1994, the $50,000,000 aggregate principal amount  of
10.5%  debentures due 2017, the $10,000,000  aggregate principal amount of 9.45%
notes due 2004 and the $25,000,000  aggregate principal amount of 10% notes  due
2012.
    
FINANCIAL CONDITION
    The  discussions of the Company's financial condition, liquidity and capital
resources contained in the 1992 Form 10-K and the Third Quarter Form 10-Q,  that
are  incorporated  by  reference  into  this  Prospectus,  do  not  reflect  the
significant impact that the Missouri Acquisition  will have on the Company  (see
"The  Missouri Acquisition" and  "Business -- Missouri  Business") and should be
read only in light of the information contained in this Prospectus.

                                       25
<PAGE>
                                    BUSINESS

    The  Company  is primarily  engaged in  various aspects  of the  natural gas
business. The  Company's  principal line  of  business is  the  distribution  of
natural  gas as a public  utility through Southern Union  Gas, a division of the
Company. Southern  Union  Gas,  which  accounts for  approximately  88%  of  the
Company's  total revenues, serves approximately 475,000 residential, commercial,
industrial, agricultural and other customers  in the states of Texas  (including
the  cities  of Austin,  Brownsville, El  Paso, Galveston  and Port  Arthur) and
Oklahoma. The Company's subsidiaries, which have been established to support and
expand natural  gas  sales  and  to  capitalize  on  the  Company's  gas  energy
expertise,  market natural  gas to  end-users, sell  natural gas  as a vehicular
fuel, convert  vehicles  to  operate  on natural  gas,  operate  intrastate  and
interstate natural gas pipeline systems and sell commercial gas air conditioning
and  other gas-fired engine-driven applications. The primary factors that affect
the distribution and sale  of natural gas  are the seasonal  nature of gas  use,
adequate  and timely rate  relief from regulatory  authorities, competition from
alternative fuels, competition within the gas business for industrial  customers
and volatility in the supply and price of natural gas. Southern Union has agreed
to  purchase certain Missouri natural gas operations that will nearly double the
number of customers served by the Company's natural gas distribution systems and
make the  Company one  of the  top 15  gas utilities  in the  United States,  as
measured by number of customers. See "The Missouri Acquisition."

BUSINESS STRATEGY
    The  Company is a sales and market-driven energy company whose management is
committed to achieving profitable growth of its natural gas energy businesses in
an increasingly competitive  business environment.  Management's strategies  for
achieving  these  objectives principally  consist  of: (i)  promoting  new sales
opportunities  and  markets  for  natural  gas;  (ii)  enhancing  financial  and
operating  performance;  and  (iii)  expanding  the  Company  through developing
existing natural gas distribution  systems and selectively acquiring  additional
natural gas distribution systems. Management developed and continually evaluates
these  strategies  and their  implementation by  analyzing the  energy industry,
technological advances, market opportunities and general business trends.

    PROMOTING NEW SALES OPPORTUNITIES  AND MARKETS FOR NATURAL  GAS.  The  sales
profile  for a typical natural gas distribution system displays peak utilization
in the winter months and relatively low utilization during the rest of the year.
The  Company  has  identified  natural  gas  uses  that  should  diminish  these
utilization  gaps, as well as improve  operational and financial efficiencies of
the gas distribution system. Technologies  such as natural gas driven  chillers,
air  conditioners,  water  pumps, electric  power  co-generators  and compressed
natural gas fueled vehicles provide the Company with sales opportunities in  and
beyond  its utility  service areas without  requiring substantial infrastructure
investments.

    The benefits to  the Company of  successful execution of  this strategy  are
beginning  to be realized in increased natural gas sales in its existing service
areas. Through  shared  savings  and  direct sales  programs,  the  Company  has
assisted  customers in the replacement of electric powered air conditioners with
new  gas  driven  air  conditioners  in  six  commercial  sites.  The   superior
performance  demonstrated by these applications is providing additional data for
use in marketing new sales and installations.

    Some states,  including  Texas  and Oklahoma,  have  clean  air  legislation
requiring  alternative fuel usage  in public fleets. Natural  gas as a vehicular
fuel is a viable ecological solution to attain the clean air standards  mandated
by  such legislation. The Company  is a 50% partner  in the "Natural Gas Vehicle
Technology Center" in Austin,  Texas, which opened in  1991. Since opening,  the
center has converted approximately 1,300 vehicles, including those of government
fleets,  public transportation systems and  private commercial fleets, which add
approximately $850,000 in gas sales revenue on an annualized basis. Through  its
Econofuel subsidiary, the Company has opened eight public refueling stations and
five private refueling stations throughout its Texas service areas.

                                       26
<PAGE>
    Water pumping for crop irrigation provides spring, summer and fall loads for
the  gas system and unregulated sales  opportunities in and beyond the Company's
regulated service areas  in Texas  and additional regulated  sales in  Oklahoma.
Since  the beginning of 1991, the Company has increased its annual sales revenue
by more than $600,000 as a result  of unregulated natural gas sales to over  278
newly  connected water  wells. The  Company expects  this market  to continue to
increase, particularly when approximately  140,000 acres of farmland  throughout
Texas,  460,000 acres throughout Oklahoma  and 500,000 acres throughout Missouri
begin to be systematically removed  from the Conservation Reserve Program  (CRP)
in 1995.

    These  developing  markets  for  natural  gas  use  offer  additional  sales
opportunities that  can  result  in  profitable growth  for  the  Company.  This
strategy  will be continued in the Company's  existing service areas and will be
initiated in the service areas of systems acquired by the Company.

    ENHANCING FINANCIAL AND OPERATING PERFORMANCE.   Rather than relying  solely
on  rate increases to enhance its financial performance, Southern Union seeks to
enhance its financial performance through improved and more cost effective  ways
to  serve the customer and through increases in  its sales base. In an effort to
reduce  costs  and  increase  customer  service,  the  Company  has   eliminated
management   layers   through  early   retirement  programs,   computerized  the
dispatching of its  customer service  personnel, reduced  overhead, lowered  the
cost  of its  maintenance and  capital improvement  programs through  the use of
outside contractors and reduced post-retirement and other employee benefits.  In
addition,  since  1990, the  Company has  pushed  decision-making down  into the
organization. Empowered employee teams examine  the total process of their  work
and  change or eliminate those  steps that are inefficient  or do not add value.
The Company has  developed recognition programs  to reward employee  innovation.
The  B.E.S.T.  program  (Building  Employee  Strategic  Thinking)  combines with
programs for top performers, community service and safety to provide  incentives
to employees to enhance the Company's performance.

    Southern  Union has worked with its regulators to implement progressive rate
tariffs and has successfully implemented  sales and transportation rate  tariffs
that provide the flexibility needed to compete by allowing it to negotiate rates
to  attract  new load  or to  retain  large customers.  Southern Union  has also
received  approval   for  weather   normalization  tariffs   in  service   areas
representing  almost half of the Company's investment. These progressive tariffs
help stabilize the customer's bill and  the Company's earnings from the  varying
effects  of  weather. Southern  Union's local  utility  service areas  have also
approved cost of service  indexing tariffs that are  designed to adjust  billing
rates  for annual changes  in operating and  administrative expenses without the
high costs associated with a full regulatory hearing.

    Through the  Company's acquisitions,  management  believes the  Company  has
been,  and  expects it  to continue  to be,  able to  realize benefits  from the
Company's expanded operations.  Management believes  that further  opportunities
for overhead and operational savings with respect to the combined operations are
achievable.

    The  Company works  with local  Chambers of  Commerce and  public officials,
helps cities obtain  state and federal  projects, and strives  to provide  safe,
environmentally  clean natural gas at competitive prices in order to financially
enhance both the  community and the  Company. Attracting new  businesses to  and
promoting  expansion of existing  businesses in the  Company's service areas can
strengthen the local economy and create new sales opportunities for the Company.
Employees are also encouraged to actively participate in community work. Company
sponsorship  of  local  charities,  city  projects  and  community  causes   are
objectively evaluated and pursued.

    EXPANDING  THE COMPANY  THROUGH DEVELOPING EXISTING  SYSTEMS AND SELECTIVELY
ACQUIRING ADDITIONAL SYSTEMS.  The Company has experienced steady annual  growth
in  the residential utility customer base in each of its existing service areas.
The stability of this  market segment and increasingly  active marketing in  the
commercial and industrial market segments in the communities it presently serves
have  permitted  the  Company  to expand  its  systems  through  normal mainline
extensions and programs designed to increase large volume sales load on existing
mainlines.

                                       27
<PAGE>
    To complement this  system development  strategy, the  Company has  actively
pursued acquisitions that management believes could profitably contribute to the
Company's  growth. Since 1990,  the Company has  acquired seven gas distribution
systems in  Texas. Collectively,  these  systems have  added nearly  115,000  of
Southern  Union Gas' present customers representing approximately $47,700,000 of
annual sales revenue to the Company. See "Acquisitions, Divestitures and Merger"
in the Notes to the Company's Consolidated Financial Statements included in  the
1992  Form 10-K that is incorporated by reference into this Prospectus. Southern
Union's most recent acquisition was on  September 30, 1993 when it acquired  Rio
Grande  for approximately $31,050,000. Rio Grande presently serves approximately
75,000 customers in the  south Texas counties of  Willacy, Cameron and  Hidalgo.
Rio Grande's service areas include 32 towns and cities along the Mexican border,
including  Brownsville, Harlingen and McAllen, Texas. See the Third Quarter Form
10-Q that is incorporated by reference into this Prospectus.

    On July 9, 1993, Southern Union agreed to acquire the Missouri Business. The
Missouri Business will add approximately 460,000 customers in western  Missouri.
If the Missouri Acquisition occurs, the Company will nearly double the number of
customers  served by its natural gas distribution  systems and become one of the
top 15 gas utilities in the United  States, as measured by number of  customers.
In  addition,  the  Missouri  Acquisition will  lessen  the  sensitivity  of the
Company's  operations  to  weather  risk   and  local  economic  conditions   by
diversifying  operations  into  different geographic  areas.  See  "The Missouri
Acquisition." The incurrence of  additional debt and issuance  of new equity  in
connection with the Missouri Acquisition will significantly change the Company's
capital  structure.  See  "Capitalization"  and  "Unaudited  Pro  Forma Combined
Condensed Financial Information."

REGULATION

    The Company's  rates  and operations,  as  well  as those  of  the  Missouri
Business,  are subject to regulation by federal, state and local authorities. In
Texas,  municipalities  have  primary  jurisdiction  over  rates  within   their
respective  incorporated areas. Rates  in adjacent environs  areas and appellate
matters are the  responsibility of the  Railroad Commission of  Texas. Rates  in
Oklahoma  are subject to regulation by  the Oklahoma Corporation Commission. The
FERC and the Texas Railroad Commission have jurisdiction over rates,  facilities
and  services  of  WGI  and  Southern,  respectively.  In  Missouri,  rates  are
established by  the MPSC  on a  system  wide basis.  The Missouri  Business  has
non-exclusive  franchises granted  by the cities  it serves  and certificates of
public convenience granted by the MPSC.  The MPSC also must approve  encumbrance
of any assets necessary or useful in the performance of the Missouri Business.

    Gas  service rates are established by regulatory authorities to collectively
permit utilities to recover operating, administrative and finance costs, and  to
earn  a return on equity. Gas costs are billed to customers through purchase gas
adjustment clauses which permit the Company and the Missouri Business to  adjust
its sales price as the cost of purchased gas changes. The appropriate regulatory
authority  must receive  notice of,  and in  Missouri approve,  such adjustments
prior to billing implementation. This is  important because the cost of  natural
gas accounts for a significant portion of the Company's total expenses.

    The  monthly customer bill  contains a fixed service  charge, a usage charge
for service to deliver  gas, and a  charge for the amount  of natural gas  used.
While the monthly fixed charge provides an even revenue stream, the usage charge
increases  the Company's annual revenue and  earnings in the traditional heating
load months when usage of natural  gas increases. The majority of the  Company's
rate  increases in  Texas and  Oklahoma in recent  years have  been reflected in
increased monthly fixed charges which help stabilize earnings.

    The Company and the Missouri Business must support any service rate  changes
to  its regulators using an historic test  year of operating results adjusted to
normal conditions and for any known  and measurable revenue or expense  changes.
Because  the  rate regulatory  process has  certain  inherent time  delays, rate
orders may not reflect the  operating costs at the time  new rates are put  into
effect.

                                       28
<PAGE>
    On  February 10,  1993 the  Company's South  Texas service  area received an
annualized rate increase of $777,000. On  June 10, 1993 the Austin City  Council
approved  an  ordinance reflecting  (i) an  approximate $1,700,000  base revenue
increase, (ii)  new and  increased  fees that  will add  approximately  $250,000
annually,  and  (iii) weather  normalization clause  revisions. The  Austin rate
increase became effective as of  July 1, 1993. On October  12, 1993 the El  Paso
City Council approved an ordinance reflecting an approximate revenue increase of
$463,000.  The El  Paso rate increase  became effective November  1, 1993. These
rate increases should contribute significantly  to Southern Union Gas'  earnings
in 1994. On October 5, 1993 the MPSC issued a rate order increasing the Missouri
Business'  natural gas rates by $9,750,000  annually. The MPSC rate order became
effective on October 15, 1993.

    The following table  summarizes the  rate increases that  have been  granted
over the last three years:

<TABLE>
<CAPTION>
                                                                        1991       1992       1993
                                                                      ---------  ---------  ---------
                                                                          (THOUSANDS OF DOLLARS)
<S>                                                                   <C>        <C>        <C>
Southern Union Gas
  Austin, Texas.....................................................  $   3,311             $   1,948
  El Paso, Texas....................................................             $   1,741        463
  All other.........................................................        244      1,001        981
                                                                      ---------  ---------  ---------
                                                                          3,555      2,742      3,392
Missouri Business...................................................                 7,300      9,750
                                                                      ---------  ---------  ---------
                                                                      $   3,555  $  10,042  $  13,142
                                                                      ---------  ---------  ---------
                                                                      ---------  ---------  ---------
</TABLE>

    The  Missouri Business  is required, pursuant  to an MPSC  order, to replace
certain service  and  main  lines.  This  has  amounted  to  an  annual  capital
expenditure  of approximately $20,000,000. The MPSC has issued accounting orders
in the past  to allow the  deferral for  future recovery in  rates of  financing
costs,  depreciation and  taxes. The  Company believes  the MPSC  will allow the
Company to continue such deferral and recovery.

                                       29
<PAGE>
SOUTHERN UNION GAS

    STATISTICS OF GAS UTILITY AND RELATED OPERATIONS.  The following table shows
certain operating statistics of Southern Union Gas for the periods indicated:

<TABLE>
<CAPTION>
                                                                                                      NINE MONTHS
                                                                      YEAR ENDED DECEMBER 31, (A)        ENDED
                                                                    -------------------------------  SEPTEMBER 30,
                                                                      1990       1991       1992       1993 (B)
                                                                    ---------  ---------  ---------  -------------
<S>                                                                 <C>        <C>        <C>        <C>
Average number of gas sales customers served:
  Residential.....................................................    374,990    394,508    365,187      372,350
  Commercial......................................................     28,784     30,132     25,853       26,050
  Industrial and irrigation.......................................        895        861        796          767
  Public authorities and other....................................      2,415      2,521      2,206        2,213
  Pipeline and marketing..........................................         55         55        157          184
                                                                    ---------  ---------  ---------  -------------
    Total average customers served................................    407,139    428,077    394,199      401,564
                                                                    ---------  ---------  ---------  -------------
                                                                    ---------  ---------  ---------  -------------
Gas sales in millions of cubic feet (MMcf):
  Residential.....................................................     22,147     23,102     21,356       15,642
  Commercial......................................................     10,294     10,466      9,059        6,855
  Industrial and irrigation.......................................      4,692      2,880      2,881        1,960
  Public authorities and other....................................      3,838      3,545      3,002        2,040
  Pipeline and marketing..........................................      2,628      4,949     14,849        4,987
                                                                    ---------  ---------  ---------  -------------
    Gas sales billed..............................................     43,599     44,942     51,147       31,484
  Net change in unbilled gas sales................................       (304)    (1,263)       (43)      (2,124)
                                                                    ---------  ---------  ---------  -------------
    Total gas sales...............................................     43,295     43,679     51,104       29,360
                                                                    ---------  ---------  ---------  -------------
                                                                    ---------  ---------  ---------  -------------
Gas sales revenues (thousands of dollars):
  Residential.....................................................  $ 113,432  $ 119,604  $ 102,028    $  81,319
  Commercial......................................................     43,329     44,011     34,261       28,885
  Industrial and irrigation.......................................     14,473      9,519      8,655        6,770
  Public authorities and other....................................     13,674     12,409      9,437        7,265
  Pipeline and marketing..........................................      7,515     11,817     28,793       11,630
                                                                    ---------  ---------  ---------  -------------
    Gas revenues billed...........................................    192,423    197,360    183,174      135,869
  Net change in unbilled gas sales revenues.......................        482     (7,499)       214       (8,000)
                                                                    ---------  ---------  ---------  -------------
    Total gas sales revenues......................................  $ 192,905  $ 189,861  $ 183,388    $ 127,869
                                                                    ---------  ---------  ---------  -------------
                                                                    ---------  ---------  ---------  -------------
Gas sales margin (thousands of dollars)(c)........................  $  74,354  $  80,623  $  80,470    $  60,003
                                                                    ---------  ---------  ---------  -------------
                                                                    ---------  ---------  ---------  -------------
Gas sales revenue per thousand cubic feet (Mcf) billed:(d)
  Residential.....................................................  $   5.121  $   5.177  $   4.777  $     5.199
  Commercial......................................................      4.209      4.205      3.782        4.214
  Industrial and irrigation.......................................      3.084      3.305      3.004        3.454
  Public authorities and other....................................      3.563      3.500      3.144        3.561
  Pipeline and marketing..........................................      2.860      2.388      1.939        2.332
Weather effect:
  Degree days(e)..................................................      2,348      2,439      2,020        1,108
  Percent of normal, based on 30-year average.....................         87%        95%        91%          83  %
Gas transported in millions of cubic feet (MMcf)..................      5,592      8,608     25,438       17,728
Gas transportation revenues (thousands of dollars)................  $   4,460  $   5,686  $   5,943  $     4,623
<FN>
- ------------------------------
(a)   Includes the Andrews, South Texas, Nixon and Brazos River operations  that
      were  acquired since  1990 and  the Arizona  operations that  were sold in
      1991, for the time periods they were owned.
(b)   The Company's  operations  are  seasonal in  nature,  with  a  significant
      percentage  of  its  annual  revenues and  earnings  occurring  during the
      traditional heating-load months.  Results of  operations historically  are
      more  favorable in the first quarter (the  three months ended March 31) of
      the Company's  fiscal year  with  results of  operations being  next  most
      favorable in the fourth quarter. Results for the second and third quarters
      are typically less favorable. Accordingly, the results of operations of an
      interim period are not necessarily indicative of results of operations for
      an annual period.
(c)   Gas sales revenues less purchased gas costs is equal to gas sales margin.
(d)   Gas  price billed in 1992  was lower than amounts  billed in 1991 and 1990
      due to lower gas costs.
(e)   "Degree days" are a measure of the coldness of the weather experienced.  A
      Degree  day is equivalent  to each degree that  the daily mean temperature
      for a day falls below 65 degrees Fahrenheit.
</TABLE>

                                       30
<PAGE>
     COMPETITION.  Southern  Union Gas  is not currently  in significant  direct
competition  with any other distributors of natural gas to residential and small
commercial customers within its  service areas. In  recent years, certain  large
volume  customers,  primarily industrial  and significant  commercial customers,
have had opportunities to access alternative  natural gas supplies and, in  some
instances,  delivery  service from  pipeline  systems. The  Company  has offered
transportation arrangements  to customers  who secure  their own  gas  supplies.
These  transportation arrangements,  coupled with  the efforts  of the Company's
marketing subsidiary,  Mercado,  enable  the Company  to  provide  competitively
priced  gas  service to  these large  volume customers.  See "Business  -- Other
Company Operations." In  addition, the  Company has  successfully used  flexible
rate  provisions, when needed, to prevent  by-pass of the Company's distribution
system.

    As an energy  provider, Southern  Union Gas also  competes with  alternative
energy  sources, particularly  electricity and  also propane,  coal, natural gas
liquids and other refined products available in the Company's service areas.  At
present  rates, the cost of electricity  to residential and commercial customers
in Southern Union Gas' service areas generally is higher than the effective cost
of Southern Union Gas' natural gas service. There can be no assurances, however,
that future fluctuations  in gas  and electric costs  will not  reduce the  cost
advantage of natural gas service.

    The  following operating cost  analysis provides a  comparison of annual gas
and electric costs for  two typical residential energy  applications in the  two
largest cities (which represent approximately 62% of Southern Union Gas' present
customers) served by Southern Union Gas:

<TABLE>
<CAPTION>
                                                                   AUSTIN, TEXAS               EL PASO, TEXAS
                                                             --------------------------  --------------------------
APPLICATION                                                    GAS (A)    ELECTRIC (B)     GAS (A)    ELECTRIC (B)
- -----------------------------------------------------------  -----------  -------------  -----------  -------------
<S>                                                          <C>          <C>            <C>          <C>
Water Heater (c)...........................................   $     102     $     280     $      76     $     292
Furnace
  Gas......................................................   $     105        --         $     124        --
  Electric Heat Pump.......................................      --         $     261        --         $     492
  Electric Resistance......................................      --         $     480        --         $     904
<FN>
- ------------------------
(a)   Gas prices contain the (i) cost of service rates effective since July 1993
      for  Austin, Texas and since January 1992 for El Paso, Texas and (ii) cost
      of gas rates  based on  average area prices  for the  twelve months  ended
      September  1993. The combined  service and gas rates  amount to $.4110 per
      hundred cubic feet (CCF) of gas in Austin, Texas and $.3071 per CCF of gas
      in El Paso, Texas.
(b)   Annual average electric rates were used to calculate electric water heater
      costs. Winter average electric rates were used to calculate furnace costs.
      The Austin  annual average  electric  rate was  $.0933 per  kilowatt  hour
      (KWH),  and the winter average rate was $.0833 per KWH. The El Paso annual
      average electric rate was $.09744 per KWH, and the winter average rate was
      $.09952 per KWH.
(c)   Based on Department of Energy first hour rating test procedure, an average
      family uses 64.3 gallons of hot water per day.
</TABLE>

Although commercial and industrial customers typically pay lower prices for  gas
and  electric services, the  Company believes that  similar gas price advantages
exist for  commercial and  industrial  applications. In  addition, the  cost  of
expansion  for peak load  requirements of electricity in  some of Southern Union
Gas' service  areas has  provided  opportunities to  allow energy  switching  to
natural  gas  pursuant  to  integrated  resource  planning  techniques. Electric
competition has responded by offering equipment rebates and incentive rates.

    Competition between the  use of fuel  oil and natural  gas, particularly  by
industrial, electric generation and agricultural customers, has increased as oil
prices  have decreased. While  competition between such  fuels is generally more
intense outside Southern Union Gas' service areas, this competition affects  the
nationwide market for natural gas. Additionally, the general economic conditions
in its service areas continue to affect certain customers and market areas, thus
impacting the results of Southern Union Gas' operations.

                                       31
<PAGE>
    GAS  SUPPLY.   The  low  cost for  natural  gas service  is  attributable to
efficient operations and the Company's ability to contract for natural gas using
favorable mixes of  long-term and short-term  supply arrangements and  favorable
transportation  contracts.  The  Company  has been  directly  acquiring  its gas
supplies since  the mid  1980s  when interstate  pipeline systems  opened  their
systems  for transportation service. The Company has the organization, personnel
and equipment necessary to dispatch and monitor gas volumes on a daily and  even
hourly basis to ensure reliable service to customers.

    This  experience will be  of major significance  in the post  FERC Order 636
procurement environment. FERC  Order 636 promotes  the "unbundling" of  services
offered  by interstate pipeline companies and allows  them to sell gas at market
based rates. As a result, gas purchase decisions and associated risks now  shift
from  the pipeline companies  to the gas distributors.  The increased demands on
distributors to  manage  effectively  their  gas supply  in  an  environment  of
volatile  gas prices will provide an advantage to distribution companies such as
Southern Union Gas that have demonstrated a history of contracting favorable and
efficient gas supply arrangements in an open market system.

    The majority  of  Southern Union  Gas'  1992 gas  requirements  for  utility
operations  were delivered under long-term transportation contracts through five
major pipeline companies. These contracts have various expiration dates  ranging
from 1995 through 2011. Southern Union Gas also purchases significant volumes of
gas  under long-term and short-term arrangements  with suppliers. The amounts of
such short-term purchases are contingent upon price. Southern Union Gas has firm
supply commitments for  all areas  that are  supplied with  gas purchased  under
short-term arrangements.

    CURTAILMENT  EXPERIENCE.   Gas  sales  and/or transportation  contracts with
interruption provisions,  whereby  large  volume users  purchase  gas  with  the
understanding  that  they may  be forced  to  shut down  or switch  to alternate
sources of energy at times when the gas is needed for higher priority customers,
have been  utilized  for load  management  by Southern  Union  Gas and  the  gas
industry  as a whole for many years. In addition, during times of special supply
problems, curtailments of  deliveries to  customers with firm  contracts may  be
made  in accordance with guidelines established by appropriate federal and state
regulatory  agencies.  There  have   been  no  supply-related  curtailments   of
deliveries  to any of Southern Union Gas'  utility customers during the last ten
years.

    The following table  shows, for  each Southern Union  Gas principal  service
area,  the percentage  of gas  utility revenues and  sales volume  for 1992, the
average cost per Mcf of gas in 1992, and the primary delivery systems:

<TABLE>
<CAPTION>
                                   PERCENT OF      PERCENT OF
                                   GAS UTILITY     GAS UTILITY        1992              PRIMARY DELIVERY SYSTEMS
                                    REVENUES      SALES VOLUME    AVERAGE COST   --------------------------------------
SERVICE AREA                         IN 1992         IN 1992         PER MCF                MAJOR PIPELINES
- --------------------------------  -------------  ---------------  -------------  --------------------------------------
<S>                               <C>            <C>              <C>            <C>
El Paso, Texas..................          32%             32%       $1.89        El Paso Natural Gas Company
Austin, Texas...................          27               20             1.99   Valero Transmission Company
Port Arthur, Texas..............           6                4             2.56   Midcon Texas Pipeline Company
Galveston, Texas................           4                3             2.33   Houston Pipeline Company
                                         ---              ---
                                          69               59

<CAPTION>
                                                                                            LOCAL PIPELINES
                                                                                 --------------------------------------
<S>                               <C>            <C>              <C>            <C>
Pipeline and marketing..........          16              29            1.80     Various
Panhandle.......................          10               9            2.49     Various
West Texas......................           3               2            2.05     Various
South Texas.....................           2               1            3.28     Valero Transmission Company
                                         ---             ---
                                          31              41
                                         ---             ---
                                         100%            100%
                                         ---             ---
                                         ---             ---
</TABLE>

                                       32
<PAGE>
MISSOURI BUSINESS

    STATISTICAL INFORMATION.   The  Missouri Business  that Southern  Union  has
agreed   to  acquire  serves   approximately  460,000  residential,  commercial,
industrial and public authority customers  in western Missouri. These  customers
are  located in  approximately 147 communities,  including the  cities of Kansas
City, St. Joseph and Joplin, Missouri. See "The Missouri Acquisition."

    The following  table  shows certain  operating  statistics of  the  Missouri
Business for the periods indicated:

<TABLE>
<CAPTION>
                                                                                                     NINE MONTHS
                                                                    YEAR ENDED DECEMBER 31,             ENDED
                                                             -------------------------------------  SEPTEMBER 30,
                                                                1990         1991         1992        1993 (A)
                                                             -----------  -----------  -----------  -------------
<S>                                                          <C>          <C>          <C>          <C>
Average number of gas sales customers served:
  Residential..............................................      404,542      397,447      399,421       393,489
  Commercial...............................................       38,200       50,609       57,615        57,093
  Industrial...............................................          234          238          249           259
                                                             -----------  -----------  -----------  -------------
    Total average customers served.........................      442,976      448,294      457,285       450,841
                                                             -----------  -----------  -----------  -------------
                                                             -----------  -----------  -----------  -------------
Gas sales in millions of cubic feet (MMcf):
  Residential..............................................       41,763       43,506       39,839        35,197
  Commercial...............................................       17,731       20,962       19,450        17,080
  Industrial...............................................        1,577        1,062        1,254           295
                                                             -----------  -----------  -----------  -------------
    Gas sales billed.......................................       61,071       65,530       60,543        52,572
  Net change in unbilled gas sales.........................       (1,271)      (1,688)       1,043        (4,838)
                                                             -----------  -----------  -----------  -------------
    Total gas sales........................................       59,800       63,842       61,586        47,734
                                                             -----------  -----------  -----------  -------------
                                                             -----------  -----------  -----------  -------------
Gas sales revenues (thousands of dollars):
  Residential..............................................  $   211,052  $   207,448  $   195,073   $   167,002
  Commercial...............................................       79,370       88,267       84,995        75,795
  Industrial...............................................        7,214        4,479        4,406         1,773
                                                             -----------  -----------  -----------  -------------
    Gas revenues billed....................................      297,636      300,194      284,474       244,570
  Net change in unbilled gas sales revenues................       (6,216)      (5,668)       3,618       (16,612)
                                                             -----------  -----------  -----------  -------------
    Total gas sales revenues...............................  $   291,420  $   294,526  $   288,092   $   227,958
                                                             -----------  -----------  -----------  -------------
                                                             -----------  -----------  -----------  -------------
Gas sales margin (thousands of dollars) (b)................  $    89,191  $   101,016  $   105,091   $    86,717
                                                             -----------  -----------  -----------  -------------
                                                             -----------  -----------  -----------  -------------
Gas sales revenue per thousand cubic feet (Mcf) billed:
  Residential..............................................  $     5.054  $     4.768  $     4.897  $      4.745
  Commercial...............................................        4.476        4.211        4.369         4.438
  Industrial...............................................        4.575        4.218        3.514         6.009
Weather effect:
  Degree days (c)..........................................        4,686        5,017        4,852         3,656
  Percent of normal, based on 30-year average..............           89%          95%          90%          108 %
Gas transported in millions of cubic feet (MMcf)...........       25,094       27,720       26,381        20,227
Gas transportation revenues (thousands of dollars).........  $     8,908  $    11,063  $     7,888  $      4,757
<FN>
- ------------------------
(a)   The  operations of  the Missouri Business  are seasonal in  nature, with a
      significant percentage  of  its  annual revenues  and  earnings  occurring
      during the traditional heating-load months. Accordingly, the operations of
      an  interim period  are not  necessarily indicative  of operations  for an
      annual period. Net earnings for the  nine months ended September 30,  1993
      were positively impacted by the colder than normal weather during the 1993
      winter heating-load months.
(b)   Gas sales revenues less purchased gas costs is equal to gas sales margin.
(c)   "Degree  days" are a measure of the coldness of the weather experienced. A
      Degree day is equivalent  to each degree that  the daily mean  temperature
      for a day falls below 65 degrees Fahrenheit.
</TABLE>

                                       33
<PAGE>
    GAS  SUPPLY.   Natural gas  is delivered  under long-term  contracts through
three pipeline companies. These contracts have various expiration dates  ranging
from  1995 through 2009. Natural gas  supplies are purchased under long-term and
short-term arrangements with suppliers.  The amounts purchased under  short-term
arrangements  are contingent upon  price. The Missouri  Business has firm supply
commitments for all areas that are supplied with gas purchased under  short-term
arrangements.  Recent curtailments in Missouri have  been the result of the 1993
flooding of the Missouri River.

    The average cost per Mcf of gas in 1992 was $2.79 in the areas served by the
Missouri Business. The  primary source of  gas supply during  1992 was  Williams
Natural  Gas Company ("WNG"), which provided approximately 37% of the gas supply
requirements. Effective October 1,  1993, pursuant to FERC  Order 636, WNG  will
provide transportation services only. Gas supply services previously provided by
WNG  are  provided  by  other  suppliers  including  Amoco  Production  Company,
Occidental Petroleum Corporation and GPM Gas Services Company.

    COMPETITION.    The  Missouri  Business  is  not  currently  in  significant
competition  with any other distributors of natural gas to residential and small
commercial customers within its  service areas. In  recent years, certain  large
volume  customers,  primarily industrial  and significant  commercial customers,
have had opportunities to access alternative  natural gas supplies and, in  some
instances,  delivery from pipeline systems. As  an energy provider, the Missouri
Business also competes with alternative energy sources, particularly electricity
and also propane, coal, natural gas liquids and other refined products available
in the Company's  service areas. At  present rates, the  cost of electricity  to
residential  and commercial customers  in the Missouri  Business's service areas
generally is higher than the effective  cost of the Missouri Business's  natural
gas service.

    The  following operating cost  analysis provides a  comparison of annual gas
and electric costs  for two  typical residential energy  applications in  Kansas
City,  Missouri,  the  largest  city  served  by  the  Missouri  Business (which
represents approximately 85% of the Missouri Business' present customers):

<TABLE>
<CAPTION>
                                                                       KANSAS CITY, MISSOURI
                                                                      ------------------------
APPLICATION                                                             GAS (A)    ELECTRIC (A)
- --------------------------------------------------------------------  -----------  -----------
<S>                                                                   <C>          <C>
Water Heater (b)....................................................   $      97    $     225
Furnace
  Gas...............................................................   $     275       --
  Electric Heat Pump................................................      --        $     604
  Electric Resistance...............................................      --        $   1,110
<FN>
- ------------------------
(a)   Gas prices are based on  the average gas bills  for the last twelve  month
      period. This amounts to $.39239 per CCF of gas in Missouri. Average annual
      electric  rates (used to calculate water heater costs) were $.075 per KWH.
      Winter average electric rates (used to calculate furnace costs) were $.070
      per KWH. Furnace consumption is based  on normal heating loads for  Kansas
      City, Missouri.
(b)   Based on Department of Energy first hour rating test procedure, an average
      family uses 64.3 gallons of hot water per day.
</TABLE>

    EMPLOYEES.  Southern Union has agreed to employ certain employees of Western
Resources involved in the Missouri Business. See "The Missouri Acquisition." The
Company  presently expects  that the  number of  such employees  will not exceed
1,144, of which presently 842 are paid on an hourly basis and 302 are paid on  a
salary  basis. Approximately  80% of the  hourly paid employees  of the Missouri
Business are represented  by unions.  If the Missouri  Acquisition occurs,  then
Southern  Union  will become  subject  to the  collective  bargaining agreements
relating to  those  employees. The  Company  believes that  the  relations  that
Western  Resources has  had with these  employees are good.  Although there have
been and may be disputes with such collective bargaining units, no such disputes
have disrupted the Missouri Business for at least 20 years.

                                       34
<PAGE>
    PROPERTIES.  The Missouri Business'  system consists of approximately  6,900
miles  of  mains and  approximately 3,100  miles of  service lines.  The Company
considers this system to be in good condition and to be well maintained.

    LEGAL PROCEEDINGS.    The Missouri  Business  is subject  to  various  legal
proceedings  that management of the Company considers  to be the normal kinds of
actions to which  an enterprise of  its size  and nature might  be subject,  and
which  management considers  not to be  material to the  operations or financial
condition either to the Missouri Business or the Company as a whole.

    ENVIRONMENTAL.  The Missouri Business owns or is otherwise associated with a
number of sites where  manufactured gas plants  were previously operated.  These
plants  were commonly used to supply gas service in the late 19th and early 20th
centuries, in  certain cases  by corporate  predecessors to  Western  Resources.
By-products  and residues from manufactured gas  could be located at these sites
and at some time in the future may require remediation by the U.S. Environmental
Protection Agency ("EPA") or delegated state regulatory authority. By virtue  of
notice  under  the  Missouri  Asset  Purchase  Agreement  and  its  preliminary,
non-invasive review, the Company  is aware of eleven  such sites in the  service
territory  of the Missouri Business. Based  on information reviewed thus far, it
appears that  neither Western  Resources nor  any predecessor  in interest  ever
owned  or operated at least three of those sites. Western Resources has informed
the Company that it was notified in 1991 by the EPA that the EPA was  evaluating
one  of the sites  (in St. Joseph,  Missouri) for any  potential threat to human
health and the environment. Western Resources has also advised the Company  that
to  date, the EPA has  not notified it that any  further action may be required.
Evaluation of  the remainder  of  the sites  by  appropriate federal  and  state
regulatory  authorities may occur in  the future. At the  present time and based
upon the preliminary information available to it, the Company believes that  the
costs  of any remediation efforts that may be required for these sites for which
it may  ultimately have  responsibility  will not  exceed the  aggregate  amount
subject   to  substantial   sharing  by   Western  Resources   pursuant  to  the
Environmental Liability  Agreement to  be entered  into at  the closing  of  the
Missouri  Acquisition.  See  "The  Missouri  Acquisition  --  Environmental." In
addition, the Company is aware of the existence of other significant potentially
responsible parties from whom contribution for remediation would be sought,  and
would  expect to  make claims upon  its insurers (Western  Resources has already
done so on its own behalf)  and institute appropriate requests for rate  relief.
The  Company is not  presently aware of  any other environmental  matters in the
Missouri Business which could reasonably be  expected to have a material  impact
on its operations or financial position.

OTHER COMPANY OPERATIONS

    Southern  Union's subsidiaries, which  have been established  to support and
expand natural  gas  sales  and  to  capitalize  on  the  Company's  gas  energy
expertise,  market natural  gas to  end-users, sell  natural gas  as a vehicular
fuel, convert  vehicles  to  operate  on natural  gas,  operate  intrastate  and
interstate natural gas pipeline systems and sell commercial gas air conditioning
and other gas-fired engine-driven applications.

    WGI,  a  wholly  owned  subsidiary of  Southern  Union,  operates interstate
pipeline systems principally serving  the Company's gas distribution  properties
in  the El  Paso, Texas area  and in  the Texas and  Oklahoma panhandles. During
1992, the FERC implemented new regulations  under Order 636 that provided for  a
restructuring  of the pipeline industry. Pursuant to these regulations, WGI will
provide unbundled transportation service for  those gas volumes which enter  the
pipeline's  transmission system. The new regulations provide the opportunity for
WGI to  move  toward  being  a pure  transporter,  to  eliminate  gas  gathering
functions, and to depreciate investments in production and gathering plant on an
accelerated  basis. In November 1991,  WGI commenced transportation service into
Juarez, Mexico via the Company's Del Norte interconnect with Petroleos Mexicanos
("PEMEX"). This service is authorized  pursuant to a Presidential Permit  issued
by   the  FERC.  Total   volumes  transported  into   Mexico  during  1992  were
approximately 15,000 MMcf.

                                       35
<PAGE>
    Southern, a wholly owned subsidiary of Southern Union, owns and operates  an
intrastate pipeline that connects the cities of Lockhart, Luling, Cuero, Shiner,
Yoakum  and Gonzales, Texas  as well as  an industrial customer  in Port Arthur,
Texas. Southern  also  owns  a  transmission line  which  supplies  gas  to  the
community of Sabine Pass, Texas.

    Mercado, a wholly owned subsidiary of Southern Union, markets natural gas to
various large volume customers. Mercado's sales and purchase activities are made
through  short-term contracts. These  contracts and business  activities are not
subject to direct rate regulation.

    Econofuel, a wholly owned subsidiary of  Southern Union, was formed in  1990
to  market  and  sell  natural  gas for  natural  gas  vehicles  ("NGVs")  as an
alternative fuel  to  gasoline.  Econofuel owns  fuel  dispensing  equipment  in
Austin,  El Paso, Port Arthur and Galveston, Texas located at independent retail
fuel stations for  NGVs. These stations  serve fleet and  other public  vehicles
which have been converted to operate on natural gas. In 1991, Econofuel together
with  Natural Gas Development Company, Inc. formed a joint venture and, in 1992,
opened the Natural Gas Vehicle Technology Centers, L.L.P. in Austin, Texas which
converts gasoline-driven vehicles to operate using natural gas.

    SUEPASCO, a wholly  owned subsidiary  of Southern Union,  was formed  during
1992  to market and  sell commercial gas air  conditioning, irrigation pumps and
other gas-fired engine driven applications and related services.

    Southern Union  Energy International,  Inc., a  wholly owned  subsidiary  of
Southern  Union, was  also formed during  1992 to participate  in energy related
projects internationally.

    The Company also holds investments in commercially developed real estate  as
well  as undeveloped tracts of land  through its wholly owned subsidiary, Lavaca
Realty Company. Most of these properties are related primarily to the  Company's
energy  business  operations. The  Company intends  to  sell the  properties not
primarily related  to the  Company's energy  business if  and when  commercially
reasonable and practicable.

                                       36
<PAGE>
                   DESCRIPTION OF THE SENIOR DEBT SECURITIES

    The  Senior  Debt  Securities  are  to  be  issued  under  an  indenture  as
supplemented from time  to time (the  "Indenture"), to be  executed by  Southern
Union  and  The Chase  Manhattan Bank  (National  Association), as  trustee (the
"Trustee"), as  shall be  set forth  in the  Prospectus Supplement  relating  to
Senior Debt Securities being offered thereby. The form of the Indenture is filed
as  an exhibit  to the  Registration Statement.  The statements  made under this
heading relating to the Senior Debt  Securities and the Indenture are  summaries
of  the  provisions thereof  and do  not purport  to be  complete. Parenthetical
references below are to the Indenture or to sections of the Trust Indenture  Act
of 1939, as amended (the "TIA") (certain provisions of which govern the terms of
the  Indenture), and, whenever any particular  provision of the Indenture or the
TIA or any defined term used therein  is referred to, such provision or  defined
term  is incorporated by reference as a part of the statement in connection with
which such reference is  made, and the statement  in connection with which  such
reference  is made is  qualified in its entirety  by such reference. Capitalized
terms used herein but not otherwise  defined shall have the meaning assigned  to
them in the Indenture.

GENERAL

    The Senior Debt Securities will be direct, unsecured obligations of Southern
Union  and  will  rank  equally  with  all  other  unsecured  and unsubordinated
indebtedness of Southern Union. The Senior Debt Securities may be issued in  one
or  more series. The particular terms of  each series of Senior Debt Securities,
as well as any modifications of or additions to the general terms of the  Senior
Debt  Securities as  described herein that  may be  applicable in the  case of a
particular series of Senior Debt Securities, will be described in the Prospectus
Supplement relating to such series of Senior Debt Securities. Accordingly, for a
description of  the terms  of a  particular series  of Senior  Debt  Securities,
reference  must be made  to both the Prospectus  Supplement relating thereto and
the description of Senior Debt Securities set forth in this Prospectus.

    Reference is made to  the Prospectus Supplement for  the following terms  of
the  Senior Debt Securities being offered thereby:  (1) the title of such Senior
Debt Securities; (2) any limit on the aggregate principal amount of such  Senior
Debt Securities; (3) the percentage of the principal amount at which such Senior
Debt  Securities will be issued and, if other than the principal amount thereof,
the portion  of  the  principal  amount  thereof  payable  upon  declaration  of
acceleration  of the maturity thereof or the  method by which such portion shall
be determined; (4) the date or dates, or the method by which such date or  dates
will  be determined  or extended,  on which  the principal  of such  Senior Debt
Securities will be  payable; (5) the  rate or  rates at which  such Senior  Debt
Securities will bear interest, if any, or the method by which such rate or rates
shall  be determined; (6) the date or dates from which interest, if any, on such
Senior Debt Securities shall accrue  or the method by  which such date or  dates
shall  be determined, the dates on which  such interest, if any, will be payable
and the Regular Record Date, if any, for the interest payable on any  Registered
Security  of the series on any Interest Payment Date, or the method by which any
such date  shall  be  determined, and  the  basis  on which  interest  shall  be
calculated if other than on the basis of a 360-day year of twelve 30-day months;
(7)  the  period or  periods within  which, the  price or  prices at  which, the
Currency in which, and  the other terms and  conditions upon which, such  Senior
Debt  Securities may be redeemed in whole or  in part, at the option of Southern
Union; (8)  the  obligation, if  any,  of Southern  Union  to redeem,  repay  or
purchase  such Senior Debt Securities pursuant  to any sinking fund or analogous
provision or at the option of a Holder thereof and the period or periods  within
which  or the date or dates on which, the price or prices at which, the Currency
in which,  and the  other terms  and  conditions upon  which, such  Senior  Debt
Securities shall be redeemed, repaid or purchased, in whole or in part, pursuant
to  such obligation; (9) whether such Senior  Debt Securities are to be issuable
as Registered Securities or Bearer Securities  or both, and whether such  Senior
Debt Securities are to be issuable, either temporarily or permanently, in global
form  and, if so, whether  beneficial owners of interests  in any such permanent
global security may exchange such interests  for Senior Debt Securities of  such
series  and  of like  tenor  of any  authorized  form and  denomination  and the
circumstances under which  any such exchanges  may occur, if  other than in  the
manner  provided  in  the  Indenture,  and,  if  Registered  Securities  of  the

                                       37
<PAGE>
series are to be issuable as a  global security, the identity of the  depository
for  such series; (10)  if other than  U.S. dollars, the  Currency in which such
Senior Debt Securities will  be denominated and in  which the principal of  (and
premium,  if  any) and  any  interest on  such  Senior Debt  Securities  will be
payable; (11) whether the  amount of payments of  principal of (and premium,  if
any)  or interest, if any, on such Senior Debt Securities may be determined with
reference to an index, formula or  other method (which index, formula or  method
may  be based on  one or more  Currencies, commodities, equity  indices or other
indices) and the manner in which such amounts shall be determined; (12)  whether
Southern  Union or Holder may elect payment of the principal of (and premium, if
any) or  interest,  if any,  on  such Senior  Debt  Securities in  one  or  more
Currencies  other than that in which such Senior Debt Securities are denominated
or stated to be payable, the period  or periods within which, and the terms  and
conditions  upon which, such  election may be  made, and the  time and manner of
determining the exchange  rate between the  Currency in which  such Senior  Debt
Securities  are denominated or  stated to be  payable and the  Currency in which
such Senior Debt Securities are to be  so payable; (13) the place or places,  if
any, other than or in addition to New York, New York where the principal of (and
premium,  if  any) and  any interest  on  such Senior  Debt Securities  shall be
payable, any  Registered  Securities  of  the  series  may  be  surrendered  for
registration  of transfer,  such Senior Debt  Securities may  be surrendered for
exchange and notice  or demands to  or upon  Southern Union in  respect of  such
Senior  Debt Securities  and the  Indenture may  be served;  (14) if  other than
denominations of $1,000 and any integral multiple thereof, the denominations  in
which  any Registered Securities of  the series shall be  issuable and, if other
than the denomination of $5,000, the denomination or denominations in which  any
Bearer  Securities of  the series  shall be issuable;  (15) the  identity of the
Trustee for such  Senior Debt  Securities and, if  other than  the Trustee,  the
Security  Registrar and/or the Paying Agent;  (16) the applicability, if at all,
to such Senior  Debt Securities  of the provisions  of Article  Fourteen of  the
Indenture   described  under  "Defeasance  and   Covenant  Defeasance"  and  any
provisions in  modification  of,  in addition  to  or  in lieu  of  any  of  the
provisions  of  such  Article; (17)  the  Person  to whom  any  interest  on any
Registered Security of the series shall be payable, if other than the Person  in
whose  name that Security (or one  or more Predecessor Securities) is registered
at the close  of business  on the  Regular Record  Date for  such interest,  the
manner  in which, or the Person to whom,  any interest on any Bearer Security of
the series shall be payable, if  otherwise than upon presentation and  surrender
of  the coupons appertaining thereto as they severally mature, and the extent to
which, or  the manner  in which,  any  interest payable  on a  temporary  global
security  on an Interest Payment  Date will be paid if  other than in the manner
provided in the Indenture;  (18) whether and  under what circumstances  Southern
Union  will  pay  Additional Amounts  as  contemplated  by Section  1005  of the
Indenture on such  Senior Debt  Securities to  any Holder  who is  not a  United
States  person (including  any modification  to the  definition of  such term as
contained in  the Indenture  as  originally executed)  in  respect of  any  tax,
assessment  or governmental charge and, if  so, whether Southern Union will have
the option to redeem such Senior Debt Securities rather than pay such Additional
Amounts (and the terms  of any such option);  (19) provisions, if any,  granting
special rights to the Holders of such Senior Debt Securities upon the occurrence
of such events as may be specified; (20) any deletions from, modifications of or
additions  to the Events of Default or  covenants of Southern Union with respect
to such  Senior  Debt Securities,  whether  or not  such  Events of  Default  or
covenants  are  consistent with  the Events  of Default  or covenants  set forth
herein; (21) the date as  of which any Bearer Securities  of the series and  any
temporary  global security  shall be  dated if other  than the  date of original
issuance of the first of such Senior  Debt Securities; (22) if such Senior  Debt
Securities are to be issuable in definitive form (whether upon original issue or
upon  exchange of  a temporary  security of  such series)  only upon  receipt of
certain certificates or  other documents  or satisfaction  of other  conditions,
then  the form and/or terms of  such certificates, documents or conditions; (23)
the designation of the initial Exchange Rate  Agent, if any; and (24) any  other
terms of such Senior Debt Securities.

    The  Indenture does not contain any  provisions which may afford the Holders
of Senior Debt  Securities of any  series protection  in the event  of a  highly
leveraged transaction or other transaction

                                       38
<PAGE>
which  may occur in connection with a takeover attempt resulting in a decline in
the credit rating of the Senior Debt Securities. Any provision that does provide
such protection, if applicable to the Senior Debt Securities, will be  described
in the Prospectus Supplement relating thereto.

    The  Indenture provides that  the Senior Debt Securities  referred to on the
cover page  of this  Prospectus and  additional unsubordinated,  unsecured  debt
securities  of Southern Union unlimited as  to aggregate principal amount may be
issued in one or more series thereunder, in each case as authorized from time to
time by the Board of Directors of Southern Union. (Section 301) The Senior  Debt
Securities  referred  to on  the  cover page  of  this Prospectus  and  any such
additional debt securities so issued under the Indenture are herein collectively
referred to,  when  a  single Trustee  is  acting  for all,  as  the  "Indenture
Securities." The Indenture also provides that there may be more than one Trustee
under  the  Indenture, each  with respect  to  one or  more different  series of
Indenture Securities. See also "Resignation of  Trustee" herein. At a time  when
two  or more Trustees are acting, each  with respect to only certain series, the
term "Indenture Securities"  as used herein  shall mean the  one or more  series
with respect to which each respective Trustee is acting. In the event that there
is  more than one Trustee under the  Indenture, the powers and trust obligations
of each Trustee as described herein shall extend only to the one or more  series
of  Indenture Securities for  which it is  Trustee. If more  than one Trustee is
acting under the  Indenture, then the  Indenture Securities (whether  of one  or
more  than  one series)  for which  each Trustee  is acting  shall in  effect be
treated as if issued under separate indentures.

    Some or all of the Senior Debt Securities may be issued under the  Indenture
as  original  issue  discount Senior  Debt  Securities (bearing  no  interest or
interest at a rate  that at the time  of issuance is below  market rates) to  be
issued  at  prices  below their  stated  principal amounts.  Federal  income tax
consequences and other  special considerations applicable  to any such  original
issue  discount  Senior  Debt Securities  will  be described  in  the Prospectus
Supplement relating thereto.

   
    The Indenture does not contain any  provisions that would limit the  ability
of  the  Company to  incur  indebtedness. Reference  is  made to  the Prospectus
Supplement related to the series of  Senior Debt Securities offered thereby  for
information with respect to any deletions from, modifications of or additions to
the  Events of Default or covenants of  Southern Union applicable to such Senior
Debt Securities that are described herein.
    

    Under the Indenture, Southern  Union will have the  ability to issue  Senior
Debt  Securities  with  terms different  from  those of  Senior  Debt Securities
previously issued, without  the consent  of the  Holders, to  reopen a  previous
issue  of a series  of Senior Debt  Securities and issue  additional Senior Debt
Securities of  such  series, in  an  aggregate principal  amount  determined  by
Southern Union. (Section 301)

DENOMINATIONS, REGISTRATION AND TRANSFER

    Senior  Debt Securities  of a  series may  be issuable  solely as Registered
Securities, solely as  Bearer Securities  or as both  Registered Securities  and
Bearer  Securities. Registered Securities  will be issuable  in denominations of
$1,000 and integral multiples of $1,000  and Bearer Securities will be  issuable
in  the denomination of $5,000 or, in  each case, in such other denominations as
may be in the terms of the Senior Debt Securities of any particular series.  The
Indenture  also provides that Senior Debt Securities of a series may be issuable
in global  form. (Section  302)  Unless otherwise  indicated in  the  Prospectus
Supplement, Bearer Securities will have interest coupons attached. (Section 201)

    Registered   Securities  of  any  series  will  be  exchangeable  for  other
Registered Securities  of the  same series  and of  a like  aggregate  principal
amount  and  tenor  of  different authorized  denominations.  If  (but  only if)
provided in the  Prospectus Supplement,  Bearer Securities  (with all  unmatured
coupons,  except as provided below,  and all matured coupons  in default) of any
series may be  exchanged for  Registered Securities of  the same  series of  any
authorized  denominations and of a like aggregate principal amount and tenor. In
such event, Bearer Securities surrendered in a permitted exchange for Registered
Securities between  a Regular  Record Date  or  a Special  Record Date  and  the
relevant date

                                       39
<PAGE>
for payment of interest shall be surrendered without the coupon relating to such
date  for payment of interest, and interest will not be payable on such date for
payment of interest in respect of the Registered Security issued in exchange for
such Bearer Security, but will be payable only to the holder of such coupon when
due in accordance with the terms of the Indenture. Unless otherwise specified in
the Prospectus Supplement, Bearer Securities will not be issued in exchange  for
Registered Securities. (Section 305)

    The Senior Debt Securities may be presented for exchange as described above,
and  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 Trustee  in New  York, New  York or  at the  office of any
transfer agent designated by Southern Union for such purpose with respect to any
series of Senior Debt Securities and  referred to in the Prospectus  Supplement.
No  service charge  will be  made for  any transfer  or exchange  of Senior Debt
Securities, but Southern Union may require payment of a sum sufficient to  cover
any  tax or other governmental charge  payable in connection therewith. (Section
305) If a Prospectus Supplement refers to any transfer agent (in addition to the
Trustee) initially designated by  Southern Union with respect  to any series  of
Senior  Debt Securities, Southern Union may  at any time rescind the designation
of any such transfer agent or approve a change in the location through which any
such transfer agent acts, except that, if Senior Debt Securities of a series are
issuable solely as  Registered Securities,  Southern Union will  be required  to
maintain  a transfer  agent in  each Place  of Payment  for such  series and, if
Senior Debt Securities of a series may be issuable both as Registered Securities
and as  Bearer Securities,  Southern  Union will  be  required to  maintain  (in
addition  to the Trustee) a transfer agent in a Place of Payment for such series
located outside the  United States.  Southern Union  may at  any time  designate
additional transfer agents with respect to any series of Senior Debt Securities.
(Section 1002)

    Southern  Union shall not be required to (i) issue, register the transfer of
or exchange Senior Debt  Securities of any series  during a period beginning  at
the  opening of business 15 days before  any selection of Senior Debt Securities
of that series  to be redeemed  and ending at  the close of  business on (A)  if
Senior Debt Securities of the series are issuable only as Registered Securities,
the  day of mailing of the relevant notice  of redemption and (B) if Senior Debt
Securities of the series are issuable as Bearer Securities, the day of the first
publication of the relevant notice of  redemption or, if Senior Debt  Securities
of  the  series are  also  issuable as  Registered  Securities and  there  is no
publication, the mailing of the relevant notice of redemption; (ii) register the
transfer of or exchange any Registered Security, or portion thereof, called  for
redemption,  except  the unredeemed  portion  of any  Registered  Security being
redeemed in part; (iii)  exchange any Bearer  Security selected for  redemption,
except to exchange such Bearer Security for a Registered Security of that series
and  like  tenor which  is simultaneously  surrendered  for redemption;  or (iv)
issue, register the transfer of or exchange any Senior Debt Securities which has
been surrendered for repayment at the option of the Holder, except the  portion,
if any, thereof not to be so repaid. (Section 305)

GLOBAL SECURITIES

   
    The  registered Senior Debt Securities of a series may be issued in the form
of one or  more fully registered  global Senior Debt  Securities (a  "Registered
Global  Security") that will be deposited  with a depositary (a "Depositary") or
with a nominee for a Depositary identified in the Prospectus Supplement relating
to such  series and  registered  in the  name of  the  Depositary or  a  nominee
thereof.  In such case, one or more  Registered Global Securities will be issued
in a  denomination  or aggregate  denominations  equal  to the  portion  of  the
aggregate  principal amount of outstanding  registered Senior Debt Securities of
the series to be  represented by such Registered  Global Security or  Registered
Global  Securities. Unless  and until it  is exchanged  in whole or  in part for
Senior Debt  Securities  in  definitive registered  form,  a  Registered  Global
Security  may not be  transferred except as  a whole by  the Depositary for such
Registered Global Security to a  nominee of such Depositary  or by a nominee  of
such  Depositary to such Depositary or another  nominee of such Depositary or by
such Depositary or  any such  nominee to  a successor  of such  Depositary or  a
nominee of such successor.
    

                                       40
<PAGE>
    The specific terms of the depositary arrangement with respect to any portion
of  a series of Senior Debt Securities  to be represented by a Registered Global
Security will be described in the Prospectus Supplement relating to such series.
The Company  anticipates  that  the  following  provisions  will  apply  to  all
depositary arrangements.

    Ownership  of beneficial interests  in a Registered  Global Security will be
limited to persons that  have accounts with the  Depositary for such  Registered
Global  Security  ("participants") or  persons that  may hold  interests through
participants ("indirect participants"). Upon the issuance of a Registered Global
Security, the Depositary for such Registered Global Security will credit, on its
book-entry registration and transfer system, the participants' accounts with the
respective principal amounts of the  Senior Debt Securities represented by  such
Registered Global Security beneficially owned by such participants. The accounts
to  be  credited  will be  designated  by  any dealers,  underwriters  or agents
participating in the distribution of  such Senior Debt Securities. Ownership  of
beneficial  interests in such  Registered Global Security will  be shown on, and
the transfer of such ownership interests will be effected only through,  records
maintained  by the Depositary for such  Registered Global Security (with respect
to interests of participants) and on  the records of participants (with  respect
to  indirect participants).  The laws  of some  states may  require that certain
purchasers of securities take physical delivery of such securities in definitive
form. Such limits  and such  laws may  impair the  ability to  own, transfer  or
pledge beneficial interest in Registered Global Securities.

    So  long as the Depositary for a Registered Global Security, or its nominee,
is the registered owner of such  Registered Global Security, such Depositary  or
such nominee, as the case may be, will be considered the sole owner or holder of
the  Senior Debt Securities  represented by such  Registered Global Security for
all purposes  under  the  Indenture.  Except  as  set  forth  below,  owners  of
beneficial  interests in  a Registered Global  Security will not  be entitled to
have the Senior Debt Securities  represented by such Registered Global  Security
registered  in  their names,  and will  not  receive or  be entitled  to receive
physical delivery of such Senior Debt Securities in definitive form and will not
be considered the owners  or holders thereof  under the Indenture.  Accordingly,
each  person owning a  beneficial interest in a  Registered Global Security must
rely on the  procedures of the  Depositary for such  Registered Global  Security
and,  if  such person  is  an indirect  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 if  any
owner  of a beneficial interest in a  Registered Global Security desires to give
or take  any action  which  a holder  is  entitled to  give  or take  under  the
Indenture,  the Depositary for  such Registered Global  Security would authorize
the participants holding the relevant beneficial interests to give or take  such
action,  and such participants would  authorize beneficial owners owning through
such participants to give or  take such action or  would otherwise act upon  the
instruction of beneficial owners holding through them.

    Payments  of principal of, premium, if any,  and any interest on Senior Debt
Securities represented by a Registered Global Security registered in the name of
a Depositary or its nominee will be  made to such Depositary or its nominee,  as
the  case may be,  as the registered  owner of such  Registered Global Security.
None of the Company, the Trustee or any  other agent of the Company or agent  of
the  Trustee will  have any  responsibility or liability  for any  aspect of the
records relating  to  or  payments  made  on  account  of  beneficial  ownership
interests  in such Registered Global Security or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests.

    The Company  expects that  the  Depositary for  any Senior  Debt  Securities
represented  by a  Registered Global  Security, upon  receipt of  any payment of
principal, premium, if any, or any interest in respect of such Registered Global
Security, will  immediately  credit  participants'  accounts  with  payments  in
amounts   proportionate  to  their  respective   beneficial  interests  in  such
Registered Global  Security as  shown on  the records  of such  Depositary.  The
Company  also  expects that  payments by  participants  to owners  of beneficial
interests   in   such   Registered    Global   Security   held   through    such

                                       41
<PAGE>
participants  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 for any Senior Debt Securities represented by a Registered
Global Security notifies the Company that it is at any time unwilling or  unable
to continue as Depositary or ceases to be a clearing agency registered under the
Exchange  Act, a successor Depositary registered  as a clearing agency under the
Exchange Act is not appointed  by the Company within  90 days, the Company  will
issue  such  Senior Debt  Securities  in definitive  form  in exchange  for such
Registered Global Security. In addition, the Company may at any time and in  its
sole  discretion determine not  to have any  of the Senior  Debt Securities of a
series represented by  one or  more Registered  Global Securities  and, in  such
event,  will issue Senior Debt  Securities of such series  in definitive form in
exchange for  all  of  the  Registered  Global  Security  or  Registered  Global
Securities  representing such Senior Debt Securities. Any Senior Debt Securities
issued in definitive form in exchange  for a Registered Global Security will  be
registered  in such name or names as  the Depositary shall instruct the Trustee.
It is expected that such instructions will be based upon directions received  by
the  Depositary  from  participants  with  respect  to  ownership  of beneficial
interests in such Registered Global Security.

   
CERTAIN COVENANTS
    
   
    The Indenture contains, among others, the following covenants:
    

   
    LIMITATION ON  LIENS.   Southern Union  will not,  and will  not permit  any
Subsidiary  to, directly or indirectly, create,  incur, issue or assume any Debt
secured by any Lien  on any property  or assets owned by  Southern Union or  any
Subsidiary,  and Southern Union will not, and will not permit any Subsidiary to,
create, incur, issue or  assume any Debt  secured by any Lien  on any shares  of
stock  or Debt of any Subsidiary (such shares of stock or Debt of any Subsidiary
being called "Restricted Securities"), unless (i)  in the case of Debt which  is
expressly  by  its  terms subordinate  or  junior  in right  of  payment  to the
applicable series  of  Senior  Debt  Securities,  such  Senior  Debt  Securities
(together with, if Southern Union shall so determine, any other Debt of Southern
Union  or  such Subsidiary  then  existing or  thereafter  created which  is not
subordinate to  the  Senior Debt  Securities)  are secured  by  a Lien  on  such
property  or assets  that is senior  to such  other Lien with  the same relative
priority as such subordinated Debt has with respect to the applicable series  of
Senior  Debt Securities or (ii) in the case of Liens securing Debt which is PARI
PASSU with the  applicable series of  Senior Debt Securities,  such Senior  Debt
Securities  are secured by a  Lien on such property or  assets that is equal and
ratable with (or prior to) such other  Lien, except that any Lien securing  such
applicable  series  of Senior  Debt  Securities may  be  junior to  any  Lien on
Southern Union's  accounts receivable,  inventory  and related  contract  rights
securing  Debt under Southern  Union's Bank Credit  Facility; PROVIDED, HOWEVER,
that nothing contained in Section 1009 shall prevent, restrict or apply to,  and
there shall be excluded from secured Debt in any computation under that Section,
Debt secured by:
    

        (a) Liens on any property or assets or Restricted Securities of Southern
    Union  or any Subsidiary  existing as of  the date of  the first issuance by
    Southern Union of the applicable  Senior Debt Securities issued pursuant  to
    the  Indenture  or such  other  date as  may  be specified  in  a Prospectus
    Supplement for  an  applicable  series  of  Senior  Debt  Securities  issued
    pursuant  to  the Indenture,  subject to  the  provisions of  subsection (h)
    below;

   
        (b) Liens on  any property  or assets  or Restricted  Securities of  any
    corporation  existing at the time such  corporation becomes a Subsidiary, or
    arising thereafter (i) otherwise  than in connection  with the borrowing  of
    money  arranged  thereafter  and (ii)  pursuant  to  contractual commitments
    entered into prior to and not in contemplation of such corporation  becoming
    a Subsidiary;
    

        (c) Liens on any property or assets or Restricted Securities of Southern
    Union  or  any  Subsidiary  existing  at  the  time  of  acquisition thereof
    (including acquisition through merger or  consolidation or by a sale,  lease
    or  other disposition of the  properties of a corporation  as an entirety or
    substantially as an entirety to Southern Union or a Subsidiary) or  securing
    the

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<PAGE>
    payment  of  all or  any part  of  the purchase  price or  construction cost
    thereof or securing any Debt incurred prior to, at the time of or within 120
    days after,  the  acquisition  of  such property  or  assets  or  Restricted
    Securities  or the completion of any  such construction, whichever is later,
    for the  purpose of  financing all  or any  part of  the purchase  price  or
    construction  cost thereof (PROVIDED such Liens are limited to such property
    or assets or Restricted Securities, to improvements on such property and  to
    any  other  property or  assets  not then  owned  by Southern  Union  or any
    Subsidiary or constituting Restricted Securities);

        (d) Liens on any  property or assets  to secure all or  any part of  the
    cost   of  development,  operation,   construction,  alteration,  repair  or
    improvement of all or any part of such property or assets, or to secure Debt
    incurred by Southern Union  or any Subsidiary  prior to, at  the time of  or
    within  120  days  after,  the completion  of  such  development, operation,
    construction, alteration, repair or improvement, whichever is later, for the
    purpose of financing all or any part  of such cost (PROVIDED such Liens  are
    limited  to  such property  or assets,  improvements  thereon and  any other
    property or assets not then owned by Southern Union or a Subsidiary);

        (e) Liens in favor  of the Trustee  for the benefit  of the Holders  and
    subsequent  holders of the  Senior Debt Securities  securing the Senior Debt
    Securities;

        (f) Liens  secured  by property  or  assets  of Southern  Union  or  any
    Subsidiary  that  comprise no  more than  20%  of Consolidated  Net Tangible
    Assets (as defined below);

        (g) Liens which secure Debt owing  by a Subsidiary to Southern Union  or
    to another Subsidiary; and

        (h)  any extension, renewal, substitution  or replacement (or successive
    extensions, renewals, substitutions or replacements), as a whole or in part,
    of any of the Liens referred to  in paragraphs (a) through (g) above or  the
    Debt   secured  thereby;   PROVIDED  that   (1)  such   extension,  renewal,
    substitution or replacement Lien shall be limited to all or any part of  the
    same  property  or assets  or Restricted  Securities  that secured  the Lien
    extended, renewed,  substituted  or  replaced  (plus  improvements  on  such
    property,  and plus any other property or  assets not then owned by Southern
    Union or a Subsidiary or constituting Restricted Securities) and (2) in  the
    case  of paragraphs (a) through (c) above,  the Debt secured by such Lien at
    such time is not increased.

    For the purposes of Section 1009, the giving of a guarantee which is secured
by a Lien on any property or  assets or Restricted Securities, and the  creation
of  a Lien  on any property  or assets  or Restricted Securities  to secure Debt
which existed prior to the creation of such Lien, shall be deemed to involve the
creation of  Debt in  an amount  equal  to the  principal amount  guaranteed  or
secured  by such Lien;  but the amount of  Debt secured by  Liens on property or
assets and  Restricted  Securities  shall be  computed  without  cumulating  the
underlying  indebtedness with any  guarantee thereof or  Lien securing the same.
(Section 1009)

    LIMITATION ON SALE AND  LEASEBACK TRANSACTIONS.  The  Company will not,  and
will  not permit any Subsidiary to, enter into any arrangement after the date of
the original issuance  by the Company  of the applicable  series of Senior  Debt
Securities  issued  pursuant to  the Indenture,  or  such other  date as  may be
specified in a  Prospectus Supplement for  an applicable series  of Senior  Debt
Securities  issued pursuant  to the Indenture,  with any Person  (other than the
Company or another Subsidiary) providing for  the leasing by the Company or  any
such  Subsidiary of any property  (except a lease for  a temporary period not to
exceed three years  by the  end of which  it is  intended that the  use of  such
property  by the lessee will be discontinued) that  was or is owned or leased by
the Company or a Subsidiary and that has been or is to be sold or transferred by
the Company or such Subsidiary to such Person (herein referred to as a "sale and
leaseback transaction") unless either:

        (a) after giving PRO FORMA effect to such transaction, the  Attributable
    Debt  (as defined below) of  the Company and its  Subsidiaries in respect of
    such sale  and  leaseback  transaction  and all  other  sale  and  leaseback
    transactions  entered  into after  the  date of  the  first issuance  by the

                                       43
<PAGE>
    Company of Senior Debt  Securities issued pursuant  to the Indenture  (other
    than  such sale and leaseback transactions as are permitted by paragraph (b)
    below) would not exceed 20% of Consolidated Net Tangible Assets, or

        (b)  the  Company,  within  180  days  after  the  sale  and   leaseback
    transaction,  applies or causes a Subsidiary to apply an amount equal to the
    greater of the net  proceeds from the  sale of the  property subject to  the
    sale  and leaseback transaction or the fair  market value of the property so
    sold and leased back at the time  of the sale and leaseback transaction  (in
    either  case as determined  by any two  of the following:  the Chairman, the
    President, any  Vice President,  the  Treasurer and  the Controller  of  the
    Company)  to the retirement of  Senior Debt Securities of  any series or any
    other Debt of the Company (other  than Debt subordinated to the Senior  Debt
    Securities)  or Debt of a  Subsidiary having a stated  maturity more than 12
    months from  the date  of such  application or  which is  extendible at  the
    option of the obligor thereon to a date more than 12 months from the date of
    such  application (and, unless otherwise  expressly provided with respect to
    any one or more series of  Senior Debt Securities, any redemption of  Senior
    Debt Securities pursuant to this provision shall not be deemed to constitute
    a refunding operation or anticipated refunding operation for the purposes of
    any  provision limiting the Company's right to redeem Senior Debt Securities
    of any one  or more such  series when such  redemption involves a  refunding
    operation  or anticipated refunding operation);  PROVIDED that the amount to
    be so applied shall be  reduced by (i) the  principal amount of Senior  Debt
    Securities  delivered within  180 days  after such  sale or  transfer to the
    Trustee for retirement and cancellation and (ii) the principal amount of any
    such Debt of the Company or a Subsidiary, other than Senior Debt Securities,
    voluntarily retired by  the Company or  a Subsidiary within  180 days  after
    such sale or transfer. Notwithstanding the foregoing, no retirement referred
    to  in this paragraph (b) may be effected by payment at maturity or pursuant
    to any mandatory sinking fund payment or any mandatory prepayment provision.

    Notwithstanding the foregoing, where  the Company or  any Subsidiary is  the
lessee  in  any  sale and  leaseback  transaction, Attributable  Debt  shall not
include any  Debt resulting  from the  guarantee  by the  Company or  any  other
Subsidiary of the lessee's obligation thereunder.

   
CERTAIN DEFINITIONS
    
   
    "Attributable  Debt" means, as to any specified lease under which any Person
is at the time liable for a term of more than 12 months, at any date as of which
the amount thereof is to be determined, the total net amount of rent required to
be paid  by such  Person under  such  lease during  the remaining  term  thereof
(excluding  any  subsequent  renewal  or other  extension  options  held  by the
lessee), discounted from the respective due dates thereof to such date at a rate
equal to the  weighted average of  the interest rates  borne by the  Outstanding
Senior  Debt Securities, compounded monthly. The  net amount of rent required to
be paid under any such lease for  any such period shall be the aggregate  amount
of  the rent payable by  the lessee with respect  to such period after excluding
any amounts required to be paid on account of maintenance and repairs, services,
insurance, taxes, assessments,  water rates and  similar charges and  contingent
rents  (such  as those  based  on sales).  In  the case  of  any lease  which is
terminable by the lessee upon the payment of a penalty, such net amount of  rent
shall include the lesser of (i) the total discounted net amount of rent required
to  be paid from  the later of  the first date  upon which such  lease may be so
terminated or the date of the determination  of such net amount of rent, as  the
case  may be, and (ii) the amount of  such penalty (in which event no rent shall
be considered as required to  be paid under such  lease subsequent to the  first
date upon which it may be so terminated).
    

   
    "Bank  Credit Facility" means the  revolving credit facility dated September
30, 1993, as amended on November 15, 1993, between Southern Union and the  Banks
as  in effect on the date of the  Indenture and as such Facility may be amended,
restated, refinanced, supplemented or otherwise modified from time to time.
    

   
    "Banks" means the  lenders from time  to time  who are parties  to the  Bank
Credit Facility.
    

                                       44
<PAGE>
   
    "Consolidated  Net Tangible Assets"  means the total  amount of assets (less
applicable reserves and other properly deductible items) of the Company and  its
consolidated  Subsidiaries after deducting therefrom (i) all current liabilities
(excluding any  current  liabilities which  are  by their  terms  extendible  or
renewable  at the option  of the obligor thereon  to a time  more than 12 months
after the time as of  which the amount thereof is  being computed) and (ii)  all
goodwill,  trade  names,  trademarks,  patents,  unamortized  debt  discount and
expense and other like intangibles, all as set forth on the most recent  balance
sheet  of  the  Company  and  its  consolidated  Subsidiaries  and  computed  in
accordance with generally accepted accounting principles.
    

EVENTS OF DEFAULT

    The Indenture provides, with respect to any series of Senior Debt Securities
outstanding thereunder, that the following  shall constitute Events of  Default:
(i)  default  in the  payment of  any  interest upon  or any  Additional Amounts
payable in  respect of  any  Debt Security  of that  series,  or of  any  coupon
appertaining  thereto, when the  same becomes due and  payable, continued for 30
days; (ii) default in the payment of the principal of or any premium on any Debt
Security of that series  at its Maturity;  (iii) default in  the deposit of  any
sinking fund payment, when and as due by the terms of any Senior Debt Securities
of  that series; (iv) default in the  performance, or breach, of any covenant or
agreement of Southern Union in the  Indenture with respect to any Debt  Security
of  that series, continued for  60 days after written  notice to Southern Union;
(v) cross-acceleration  of  other  Debt of  the  Company  in excess  of  10%  of
Consolidated  Net  Worth;  (vi)  certain  events  in  bankruptcy,  insolvency or
reorganization; and (vii) any  other Event of Default  provided with respect  to
Senior  Debt Securities of that series. (Section 501) Southern Union is required
to file with  the Trustee,  annually, an  officer's certificate  as to  Southern
Union's  compliance  with  all  conditions and  covenants  under  the Indenture.
(Section 1004) The Indenture  provides that the Trustee  may withhold notice  to
the Holders of Senior Debt Securities of any default (except payment defaults on
the Senior Debt Securities) if it considers it in the interest of the Holders of
Senior Debt Securities to do so. (Section 601)

    If  an  Event  of  Default,  other  than  certain  events  with  respect  to
bankruptcy, insolvency and reorganization of  Southern Union or any  significant
Subsidiary,  with respect to Senior Debt Securities of a particular series shall
occur and be  continuing, the Trustee  or the Holders  of not less  than 25%  in
principal  amount  of  Outstanding Senior  Debt  Securities of  that  series may
declare the Outstanding Senior  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 Southern  Union or any  Significant
Subsidiary  with respect to Senior Debt  Securities of a particular series shall
occur and be continuing, then the  principal of all the Outstanding Senior  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 Trustee  or
any Holders. (Section 502)

    Subject  to the provisions relating to the duties of the Trustee, in case an
Event of Default with respect to  Senior Debt Securities of a particular  series
shall  occur and  be continuing,  the Trustee  shall be  under no  obligation to
exercise any of its rights or powers  under the Indenture at the request,  order
or  direction of any  of the Holders  of Senior Debt  Securities of such series,
unless such Holders shall have offered  to the Trustee reasonable indemnity  and
security  against the costs, expenses and liabilities which might be incurred by
it in compliance with such request. (Section 507 and TIA Section 315) Subject to
such provisions  for  the indemnification  of  the  Trustee, the  Holders  of  a
majority  in principal amount of the  Outstanding Senior 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 Trustee under the Indenture, or
exercising any  trust or  power conferred  on the  Trustee with  respect to  the
Senior Debt Securities of that series. (Section 512)

    The  Holders  of  not  less  than a  majority  in  principal  amount  of the
Outstanding Senior Debt Securities of any series may on behalf of the Holders of
all the Senior 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

                                       45
<PAGE>
or Additional Amounts payable in respect of any Debt Security of such series, or
(ii)  in respect of a  covenant or provision that  cannot be modified or amended
without the consent  of the  Holder of each  Outstanding Debt  Security of  such
series affected thereby. (Section 513)

MERGER OR CONSOLIDATION

   
    The  Indenture provides that Southern Union  may not consolidate with, merge
into any other corporation, or convey, transfer or lease, or permit one or  more
of  its Subsidiaries to convey,  transfer or lease, all  or substantially all of
the property and assets of  the Company, on a  consolidated basis to any  Person
unless  either Southern Union is the  continuing corporation or such corporation
or Person  assumes by  supplemental indenture  all the  obligations of  Southern
Union  under the Indenture and the Senior Debt Securities, immediately after the
transaction no  default  or event  of  default  shall exist  and  the  surviving
corporation  or such Person is a corporation, partnership or trust organized and
validly existing  under the  laws of  the United  States of  America, any  state
thereof or the District of Columbia. (Section 801)
    

MODIFICATION OR WAIVER

    Modification  and amendment of  the Indenture may be  made by Southern Union
and the Trustee with the consent of the  Holders of not less than a majority  in
principal  amount of all Outstanding Indenture 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
Indenture 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  Indenture 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
Indenture Security of such series; (iii) change any obligation of Southern Union
to  pay Additional Amounts in respect of  any Indenture Security of such series;
(iv) reduce the  amount of  principal of  an original  issue discount  Indenture
Security  of such  series that 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 Indenture Security of such series;
(vi) change the place or currency of payment of principal of, or any premium  or
interest  on, any Indenture 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   Indenture
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
Indenture Securities  of  such  series  necessary to  waive  any  past  default.
(Section 902)

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

                                       46
<PAGE>
any of the  provisions of the  Indenture to  the extent necessary  to permit  or
facilitate  defeasance  and discharge  of  any series  of  Indenture Securities,
provided such action shall not adversely affect the interests of the Holders  of
any Indenture Securities in any material respect. (Section 901)

    The  Indenture contains provisions for convening  meetings of the Holders of
Indenture Securities of  a series  if Indenture  Securities of  that series  are
issuable  as Bearer Securities.  (Section 1501) A  meeting may be  called at any
time by the Trustee, and also, upon request, by Southern Union or the Holders of
at least 10%  in principal  amount of the  Indenture Securities  of such  series
Outstanding,  in any such case  upon notice given as  provided in the Indenture.
(Section 1502) Except for any consent that  must be given by the Holder of  each
Indenture   Security  affected  thereby,  as  described  above,  any  resolution
presented at a meeting or adjourned meeting at which a quorum is present may  be
adopted by the affirmative vote of the Holders of a majority in principal amount
of  the Indenture Securities of that series Outstanding; PROVIDED, HOWEVER, that
any resolution with  respect to any  request, demand, authorization,  direction,
notice,  consent, waiver or other action that may be made, given or taken by the
Holders of a specified percentage, which  is less than a majority, in  principal
amount  of Indenture  Securities of  a series  Outstanding may  be adopted  at a
meeting or adjourned meeting duly reconvened at which a quorum is present by the
affirmative vote of the Holders of such specified percentage in principal amount
of the Indenture Securities of that series Outstanding. Any resolution passed or
decision taken at any meeting of  Holders of Indenture Securities of any  series
duly  held in accordance  with the Indenture  will be binding  on all Holders of
Indenture Securities of that series and  the related coupons. The quorum at  any
meeting called to adopt a resolution, and at any reconvened meeting, will be the
persons  entitled  to  vote a  majority  in  principal amount  of  the Indenture
Securities of a series Outstanding; PROVIDED, HOWEVER, that if any action is  to
be  taken at such meeting with respect to a consent or waiver which may be given
by the Holders of not  less than a specified  percentage in principal amount  of
the  Indenture Securities of a series  Outstanding, the Persons entitled to vote
such specified percentage  in principal  amount of the  Indenture Securities  of
such  series Outstanding will constitute a quorum. Notwithstanding the foregoing
provisions, if any action is  to be taken at a  meeting of Holders of  Indenture
Securities  of any  series with respect  to any  request, demand, authorization,
direction, notice, consent, waiver or other action that the Indenture  expressly
provides may be made, given or taken by the Holders of a specified percentage in
principal amount of all Outstanding Indenture Securities affected thereby, or of
the Holders of such series and one or more additional series: (i) there shall be
no minimum quorum requirement for such meeting; and (ii) the principal amount of
the  Outstanding Indenture Securities of such series  that vote in favor of such
request, demand,  authorization, direction,  notice,  consent, waiver  or  other
action  shall be taken into account in determining whether such request, demand,
authorization, direction, notice, consent, waiver or other action has been made,
given or taken under the Indenture. (Section 1504)

DEFEASANCE AND COVENANT DEFEASANCE

   
    The Indenture provides that, if the provisions of Article Fourteen are  made
applicable to the Senior Debt Securities of or within any series and any related
coupons  pursuant  to Section  301 of  the Indenture,  Southern Union  may elect
either (a)  to defease  and be  discharged  from any  and all  obligations  with
respect  to such Senior Debt Securities and  any related coupons (except for the
obligation to pay  Additional Amounts, if  any, upon the  occurrence of  certain
events  of tax,  assessment or governmental  charge with respect  to payments on
such Senior Debt  Securities and  the obligations  to register  the transfer  or
exchange  of such  Senior Debt  Securities and  any related  coupons, to replace
temporary or mutilated, destroyed, lost or stolen Senior Debt Securities and any
related coupons, to maintain an office or agency in respect of such Senior  Debt
Securities  and any  related coupons  and to hold  moneys for  payment in trust)
("defeasance") (Section 1402) or  (b) to be released  from its obligations  with
respect  to such Senior  Debt Securities and any  related coupons under Sections
1009 and 1010 (being the restriction  described under "Limitation on Liens"  and
"Limitations  on Sale and  Leaseback Transactions") or,  if provided pursuant to
Section 301  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 Senior Debt Securities and
any related coupons ("covenant defeasance") (Section 1403), in either case  upon
the irrevocable deposit by Southern
    

                                       47
<PAGE>
Union with the Trustee (or other qualifying trustee), in trust, of an amount, in
such  Currency in which such Senior Debt  Securities and any related coupons are
then specified  as payable  at Stated  Maturity, or  Government Obligations  (as
defined  below),  or both,  applicable to  such Senior  Debt Securities  and any
related coupons (with such  applicability being determined on  the basis of  the
currency,  currency  unit  or  composite  currency  in  which  such  Senior 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  Senior Debt  Securities and  any related
coupons, 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, Southern Union
has delivered  to  the  Trustee an  Opinion  of  Counsel (as  specified  in  the
Indenture) to the effect that the Holders of such Senior Debt Securities and any
related  coupons  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, and  such Opinion  of
Counsel,  in the case of defeasance under clause (a) above, must refer to and be
based upon a ruling of  the Internal Revenue Service  or a change in  applicable
United  States federal income tax law occurring after the date of the Indenture.
(Section 1404)

    "Government Obligations" means securities  which are (i) direct  obligations
of  the government which issued the Currency in which the Senior 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 which issued  the
Currency  in which the  Senior 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 on or principal  of the Government  Obligation
evidenced by such depository receipt. (Section 101)

    Unless  otherwise provided in the  Prospectus Supplement, if, after Southern
Union has deposited funds and/or Government Obligations to effect defeasance  or
covenant  defeasance with respect  to Senior Debt Securities  of any series, (a)
the Holder of a  Debt Security of  such series is entitled  to, and does,  elect
pursuant  to the terms  of such Debt  Security to receive  payment in a Currency
other than that  in which such  deposit has been  made in respect  of such  Debt
Security,  or (b) the currency in which such deposit has been made in respect of
any Debt  Security  of such  series  ceases to  be  used by  its  government  of
issuance,  the indebtedness represented by such 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 Debt
Security as they become due out of the proceeds yielded by converting the amount
so deposited in respect of  such Debt Security into  the Currency in which  such
Debt  Security becomes payable as a result of such election or such cessation of
usage based  on  the applicable  Market  Exchange Rate.  (Section  1405)  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  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. (Section 312)

    In the event Southern Union effects covenant defeasance with respect to  any
Senior  Debt Securities and any related  coupons and such Senior Debt Securities
and any related coupons 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  (vi) under  "Events of  Default"  with respect  to any  covenant  with
respect to

                                       48
<PAGE>
which  there has  been defeasance,  the Currency  and Government  Obligations on
deposit with the Trustee will  be sufficient to pay  amounts due on such  Senior
Debt Securities and any related coupons at the time of their Stated Maturity but
may  not be sufficient to pay amounts due on such Senior Debt Securities and any
related coupons at  the time of  the acceleration resulting  from such Event  of
Default.  However, Southern  Union 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 Senior Debt Securities of
or within a particular series and any related coupons.

FINANCIAL INFORMATION

   
    So long as any of the Senior Debt Securities are outstanding, Southern Union
will file, to the extent permitted under  the 1934 Act, with the Commission  the
annual  reports, quarterly reports and other  documents otherwise required to be
filed with the Commission pursuant to Section 13(a) or 15(d) of the 1934 Act  as
if  Southern Union were  subject to such  Sections and will  also provide to all
Holders and file with the Trustee copies of such reports and documents within 15
days after it  files them with  the Commission  or, if filing  such reports  and
documents  by Southern Union with the Commission is not permitted under the 1934
Act, within 15 days  after it would  otherwise have been  required to file  such
reports  and  documents if  permitted, in  each case  at Southern  Union's cost.
(Section 1011)
    

RESIGNATION OF TRUSTEE

    The Trustee may resign or be removed  with respect to one or more series  of
Indenture  Securities  and a  successor  Trustee may  be  appointed to  act with
respect to such series. (Section 608) In the event that two or more persons  are
acting as Trustee with respect to different series of Indenture Securities, each
such  Trustee shall  be a Trustee  of a  trust under the  Indenture separate and
apart from the trust administered by  any other such Trustee (Section 609),  and
any  action described herein to  be taken by the "Trustee"  may then be taken by
each such Trustee with  respect to, and  only with respect to,  the one or  more
series of Indenture Securities for which it is Trustee.

THE TRUSTEE

    The  Company may  from time  to time maintain  bank accounts  and have other
customary banking relationships with and  obtain credit facilities and lines  of
credit from the Trustee in the ordinary course of business. The Trustee may also
serve  as trustee under  other indentures covering other  debt securities of the
Company.

PAYMENT AND PAYING AGENTS

    Unless otherwise provided in the Prospectus Supplement, principal,  premium,
if  any,  and  interest, if  any,  and  Additional Amounts,  if  any,  on Bearer
Securities will be payable, subject to  any applicable laws and regulations,  at
the  offices of such Paying  Agents outside the United  States as Southern Union
may designate from time to time. (Section 1002) Unless otherwise provided in the
Prospectus Supplement, payment  of interest  and certain  Additional Amounts  on
Bearer  Securities  on  any Interest  Payment  Date  will be  made  only against
presentation and surrender of the coupon relating to such Interest Payment Date.
(Section 1001)  Unless  otherwise  provided in  the  Prospectus  Supplement,  no
payment with respect to any Bearer Security will be made at any office or agency
of  Southern Union in the United States or by check mailed to any address in the
United States or by transfer to an account maintained with a bank located in the
United States. Notwithstanding the foregoing, payments of principal, premium, if
any, and interest, if any, and Additional Amounts, if any, in respect of  Bearer
Securities  payable  in U.S.  dollars will  be  made at  the office  of Southern
Union's Paying Agent in New York, New York if (but only if) payment of the  full
amount  thereof in U.S.  dollars at all  offices or agencies  outside the United
States is illegal or effectively precluded by exchange controls or other similar
restrictions. (Section 1002)

    Unless otherwise provided in the Prospectus Supplement, principal,  premium,
if  any, and  interest, if  any, and Additional  Amounts, if  any, on Registered
Securities will be payable at any office or

                                       49
<PAGE>
agency to be maintained by Southern Union in New York, New York, except that  at
the  option of Southern  Union, interest (including  additional Amounts, if any)
may be paid (i) by check mailed to the address of the Person entitled thereto as
such address shall appear  in the Security  Register or (ii)  by transfer to  an
account maintained by the payee located inside the United States. (Sections 307,
1001  and 1002) Unless otherwise provided  in the Prospectus Supplement, payment
of any installment  of interest  on Registered Securities  will be  made to  the
Person  in whose  name such  Registered Security is  registered at  the close of
business on the Regular Record Date for such interest. (Section 307)

    Any Paying Agents outside the United  States and any other Paying Agents  in
the  United States  initially designated by  Southern Union for  the Senior Debt
Securities will be named in the Prospectus Supplement. Southern Union may at any
time designate additional Paying Agents or rescind the designation of any Paying
Agent or approve a  change in the  office through which  any Paying Agent  acts,
except  that,  if  Senior Debt  Securities  of  a series  are  issuable  only as
Registered Securities,  Southern Union  will be  required to  maintain a  Paying
Agent in each Place of Payment for such series and, if Senior Debt Securities of
a series are also issuable as Bearer Securities, Southern Union will be required
to  maintain (i) a Paying Agent in New  York, New York for payments with respect
to any Registered  Securities of the  series (and for  payments with respect  to
Bearer  Securities of the  series in the circumstances  described above, but not
otherwise), and (ii) a Paying  Agent in a Place  of Payment located outside  the
United  States  where Senior  Debt  Securities of  such  series and  any coupons
appertaining thereto may be presented and surrendered for payment; PROVIDED that
if the Senior Debt Securities  of such series are  listed on any stock  exchange
located  outside the  United States  and such  stock exchange  shall so require,
Southern Union will maintain a Paying  Agent in any other required city  located
outside the United States, as the case may be, for the Senior Debt Securities of
such series. (Section 1002)

                                       50
<PAGE>
                              PLAN OF DISTRIBUTION

    Southern   Union  may  sell  the  Senior   Debt  Securities  to  or  through
underwriters or dealers, and also may  sell the Senior Debt Securities  directly
to one or more other purchasers or through agents.

    The  Prospectus  Supplement sets  forth  the terms  of  the offering  of the
particular series of Senior Debt Securities to which such Prospectus  Supplement
relates, including (i) the name or names of any underwriters or agents with whom
Southern  Union has entered into  arrangements with respect to  the sale of such
series of Senior Debt Securities, (ii)  the initial public offering or  purchase
price  of  such  series  of  Senior  Debt  Securities,  (iii)  any  underwriting
discounts, commissions and other  items constituting underwriters'  compensation
from  Southern Union and any other discounts, concessions or commissions allowed
or reallowed or paid by any underwriters to other dealers, (iv) any  commissions
paid  to  any  agents, (v)  the  net proceeds  to  Southern Union  and  (vi) the
securities exchange, if any, on which such series of Senior Debt Securities will
be listed.

    Unless otherwise  set  forth in  the  Prospectus Supplement  relating  to  a
particular series of Senior Debt Securities, the obligations of the underwriters
to  purchase such series  of Senior Debt  Securities will be  subject to certain
conditions precedent and each of the underwriters with respect to such series of
Senior Debt Securities  will be  obligated to purchase  all of  the Senior  Debt
Securities of such series allocated to it if any such Senior Debt Securities are
purchased.  Any initial public  offering price and  any discounts or concessions
allowed or reallowed or paid to dealers may be changed from time to time.

    The Senior  Debt  Securities may  be  offered  and sold  by  Southern  Union
directly  or  through agents  designated by  Southern Union  from time  to time.
Unless otherwise  indicated in  the  Prospectus Supplement,  any such  agent  or
agents  will be acting  on a best efforts  basis for the period  of its or their
appointment.  Any  agent  participating  in  the  distribution  of  Senior  Debt
Securities  may be deemed to be an "underwriter," as that term is defined in the
Securities Act, of the  Senior Debt Securities so  offered and sold. The  Senior
Debt  Securities also  may be  sold to  dealers at  the applicable  price to the
public set forth in the Prospectus Supplement relating to a particular series of
Senior Debt Securities who later resell to investors. Such dealers may be deemed
to be "underwriters" within the meaning of the Securities Act.

    As one  of the  means of  direct  issuance, Southern  Union may  conduct  an
electronic  auction  of the  Senior Debt  Securities  to purchasers  eligible to
participate in  such auctions.  All participants  in any  such auction  will  be
required  to be  parties to  agreements containing  rules which  provide for the
manner of  conduct of  the  auction and  the  obligations of  the  participants.
Certain  information concerning the Senior Debt  Securities to be offered in any
such auction, including the amount of Senior Debt Securities offered therein and
any previously undisclosed commercial terms other than price and coupon, may  be
communicated  to participants  in such auction  at or  prior to the  time of the
conduct thereof through  the auction system.  An independent agent  will act  in
connection  with such auction  solely as the provider  of the electronic auction
system. The independent agent may be deemed an "underwriter" of the Senior  Debt
Securities offered through the system for the purposes of the Securities Act. If
Southern  Union elects  to conduct any  such auction, Southern  Union will enter
into an agreement with the independent agent for the conduct of such auction.

    Purchasers of the Senior Debt Securities through electronic auction that are
broker-dealers may purchase the  Senior Debt Securities  for their own  account,
for   resale   to  customers   or  for   further  distribution   (through  other
broker-dealers or otherwise), and in connection with any such resale or  further
distribution  may receive  or pay  compensation in  an amount  determined by the
difference between the resale price of the Senior Debt Securities and the  price
reflected  in the Prospectus Supplement. Any such broker-dealer purchaser may be
deemed an "underwriter" of the Senior Debt Securities offered through the system
for purposes of  the Securities Act.  Any agreement with  the independent  agent
will  contain an indemnification,  under certain circumstances,  of such broker-
dealer  purchasers  with  respect  to  certain  liabilities,  including  certain
liabilities that may arise under the Securities Act.

                                       51
<PAGE>
    Underwriters,  dealers and agents may  be entitled, under agreements entered
into with Southern Union, to  indemnification by Southern Union against  certain
civil liabilities, including liabilities under the Securities Act.

    If so indicated in the Prospectus Supplement relating to a particular series
of  Senior Debt Securities, Southern  Union will authorize underwriters, dealers
or agents to  solicit offers  by certain  institutions to  purchase Senior  Debt
Securities  of  such series  from Southern  Union  pursuant to  delayed delivery
contracts providing for payment  and delivery at a  future date. Such  contracts
will  be subject only to those conditions set forth in the Prospectus Supplement
and the  Prospectus  Supplement  will  set  forth  the  commission  payable  for
solicitation of such contracts.

                                 LEGAL MATTERS

   
    The  validity of  the Senior Debt  Securities offered hereby  will be passed
upon for Southern Union  by Fleischman and Walsh,  Washington, D.C. and for  the
Underwriters  by Shearman &  Sterling, New York, New  York. Aaron I. Fleischman,
Senior Partner of  Fleischman and Walsh,  is a director  of Southern Union.  Mr.
Fleischman  and other attorneys  in that firm beneficially  own shares of Common
Stock that, in the aggregate, represent less than one percent (1%) of the shares
of Common Stock outstanding.
    

                                    EXPERTS

    The financial statements of the Missouri Business of Gas Service, a division
of Western Resources as of December 31, 1992 and 1991 and for each of the  three
years  in the period ended December 31, 1992 that are included elsewhere in this
Prospectus, and the financial statements of the Company as of December 31,  1992
and  1991 and for each of the three  years in the period ended December 31, 1992
that are incorporated by  reference into this Prospectus,  have been audited  by
Coopers  & Lybrand, independent public accountants, as indicated in their report
with respect thereto, and are included  in this Prospectus in reliance upon  the
authority  of said  firm as  experts in accounting  and auditing  in giving said
report.

                                       52
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                                                                                     PAGE(S)
                                                                                                ------------------
<S>                                                                                             <C>
MISSOURI BUSINESS OF GAS SERVICE:
  Audited Financial Statements:
    Report of Independent Accountants.........................................................         F-2
    Balance Sheet at December 31, 1992 and 1991...............................................         F-3
    Statement of Operations for the years ended December 31, 1992, 1991 and 1990..............         F-4
    Notes to Financial Statements.............................................................     F-5 to F-12
  Unaudited Interim Financial Statements:
    Balance Sheet at September 30, 1993.......................................................         F-13
    Statement of Operations for the nine months ended September 30, 1993 and 1992.............         F-14
    Notes to Unaudited Interim Financial Statements...........................................     F-15 to F-16
UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS:
  Unaudited Pro Forma Combined Condensed Financial Information................................         PF-1
  Pro Forma Combined Condensed Statement of Operations for the nine months ended September 30,
   1993.......................................................................................         PF-2
  Pro Forma Combined Condensed Statement of Operations for the twelve months ended September
   30, 1993...................................................................................         PF-3
  Pro Forma Combined Condensed Statement of Operations for the year ended December 31, 1992...         PF-4
  Notes to Unaudited Pro Forma Combined Condensed Statements of Operations....................     PF-5 to PF-6
  Pro Forma Combined Condensed Balance Sheet at September 30, 1993............................         PF-7
  Notes to Unaudited Pro Forma Combined Condensed Balance Sheet...............................         PF-8
</TABLE>

                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The Board of Directors
Southern Union Company

    We have audited the balance sheet of the Missouri Business of Gas Service, a
division  of Western Resources, Inc., pursuant  to the Agreement for Purchase of
Assets between  Western  Resources,  Inc.  and Southern  Union  Company,  as  of
December  31, 1992 and 1991 and the  related statement of operations for each of
the three  years  in  the  period  ended  December  31,  1992.  These  financial
statements   are   the   responsibility  of   the   Company's   management.  Our
responsibility is to express an opinion  on these financial statements based  on
our audit.

    We  conducted  our  audit  in accordance  with  generally  accepted auditing
standards. Those standards require that we plan and perform the audit to  obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also  includes
assessing  the  accounting principles  used  and significant  estimates  made by
management, as well as evaluating the overall financial statement  presentation.
We believe that our audit provides a reasonable basis for our opinion.

    In  our opinion, the financial statements  referred to above present fairly,
in all material respects, the financial position of the Missouri Business of Gas
Service, a division  of Western  Resources, Inc., as  of December  31, 1992  and
1991,  and  its operations  for  each of  the three  years  in the  period ended
December 31, 1992 in conformity with generally accepted accounting principles.

                                                    COOPERS & LYBRAND

Austin, Texas
September 24, 1993

                                      F-2
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                                 BALANCE SHEET

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                               DECEMBER 31,
                                                                                        --------------------------
                                                                                            1991          1992
                                                                                        ------------  ------------
                                                                                          (THOUSANDS OF DOLLARS)
<S>                                                                                     <C>           <C>
Property, plant and equipment.........................................................  $    361,849  $    393,376
  Less accumulated depreciation and amortization......................................      (108,225)     (117,925)
                                                                                        ------------  ------------
                                                                                             253,624       275,451
                                                                                        ------------  ------------
Current assets:
  Cash................................................................................             8             9
  Accounts receivable, billed and unbilled............................................        49,117        57,942
  Materials and supplies..............................................................         4,467         4,764
  Other current assets................................................................            35            35
                                                                                        ------------  ------------
                                                                                              53,627        62,750
                                                                                        ------------  ------------
Deferred charges and other............................................................         4,384         5,935
                                                                                        ------------  ------------
    Total assets......................................................................  $    311,635  $    344,136
                                                                                        ------------  ------------
                                                                                        ------------  ------------
                                              EQUITY AND LIABILITIES
Equity in net assets acquired.........................................................  $    235,506  $    275,501
                                                                                        ------------  ------------
Current liabilities -- accounts payable and accrued liabilities.......................        71,277        64,608
Deferred credits and other............................................................         4,852         4,027
                                                                                        ------------  ------------
    Total liabilities.................................................................        76,129        68,635
Contingencies.........................................................................       --            --
                                                                                        ------------  ------------
    Total equity and liabilities......................................................  $    311,635  $    344,136
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>

                See accompanying notes to financial statements.

                                      F-3
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                            STATEMENT OF OPERATIONS

<TABLE>
<CAPTION>
                                                                                   YEARS ENDED DECEMBER 31,
                                                                             -------------------------------------
                                                                                1990         1991         1992
                                                                             -----------  -----------  -----------
                                                                                    (THOUSANDS OF DOLLARS)
<S>                                                                          <C>          <C>          <C>
Revenues...................................................................  $   302,163  $   307,667  $   297,956
                                                                             -----------  -----------  -----------
Cost and expenses:
  Gas purchase costs.......................................................      202,229      193,510      183,001
  Operating, maintenance and general.......................................       59,311       64,829       66,908
  Taxes, other than on income..............................................       25,598       25,877       25,038
  Depreciation and amortization............................................        9,730       11,628       13,172
                                                                             -----------  -----------  -----------
  Total costs and expenses.................................................      296,868      295,844      288,119
                                                                             -----------  -----------  -----------
Net operating revenue......................................................        5,295       11,823        9,837
                                                                             -----------  -----------  -----------
Other income (expenses):
  Interest expense.........................................................       (8,342)      (9,294)      (8,831)
  Other, net...............................................................          504         (696)       1,214
                                                                             -----------  -----------  -----------
  Total other income (expenses), net.......................................       (7,838)      (9,990)      (7,617)
                                                                             -----------  -----------  -----------
Earnings (loss) before income taxes........................................       (2,543)       1,833        2,220
Income tax provision (benefit).............................................       (1,593)         523          705
                                                                             -----------  -----------  -----------
Net earnings (loss)........................................................  $      (950) $     1,310  $     1,515
                                                                             -----------  -----------  -----------
                                                                             -----------  -----------  -----------
</TABLE>

                See accompanying notes to financial statements.

                                      F-4
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                         NOTES TO FINANCIAL STATEMENTS

1.  BASIS OF PRESENTATION
    The  Missouri Business of Gas Service  (the "Missouri Business"), a division
of  Western  Resources,   Inc.,  ("Western  Resources"),   is  engaged  in   the
distribution  and  sale of  natural  gas as  a public  utility  in the  state of
Missouri. On  July 9,  1993, Southern  Union Company  ("Southern Union"  or  the
"Company")  entered into  a purchase and  sale agreement  with Western Resources
(the  "Agreement")  to  purchase  the  Missouri  Business  subject  to   certain
conditions  including  the regulatory  approval of  the Missouri  Public Service
Commission ("MPSC" or the "Commission").

    The Missouri Business  has no separate  legal status or  existence, and  its
activities  are controlled by Western Resources. Historically, the operations of
the  Missouri  Business  have  been  included  in  the  consolidated   financial
statements of Western Resources and were not accounted for as a separate entity.
In the normal course of business, the Missouri Business has various transactions
with  Western  Resources,  including  various  expense  allocations,  which  are
material in amount.

    The accompanying  historical  balance  sheet  and  statement  of  operations
consists  of the  assets acquired  and liabilities assumed  as set  forth in the
Agreement and the operations related  to the Missouri Business. These  financial
statements  have been prepared from records maintained by Western Resources, and
may not necessarily be indicative of the conditions which would have existed  if
the Missouri Business had been operated as an independent entity.

2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
    GENERAL.  The accounting policies of the Missouri Business are in accordance
with  generally accepted  accounting principles  as applied  to regulated public
utilities. The Missouri Business rates and operations are subject to  regulation
by the MPSC and the Federal Energy Regulatory Commission ("FERC"). The principal
accounting  policies used in the preparation  of the financial statements of the
Missouri Business are described below.

    UTILITY PLANT.   Utility plant  is stated  at cost.  For constructed  plant,
costs  include contracted services, direct labor and materials, indirect charges
for engineering, supervision, general and administrative costs, and an allowance
for funds used during  construction (AFUDC). The AFUDC  rate was 6.07% in  1992,
6.25%  in 1991, and  8.25% in 1990. The  cost of additions  to utility plant and
replacement units of property is capitalized. Maintenance costs and  replacement
of  minor items of  property are charged  to expense as  incurred. When units of
depreciable property are retired, they are  removed from the plant accounts  and
the  original cost plus removal charges  less salvage are charged to accumulated
depreciation. Significant software development costs are capitalized.

    DEPRECIATION.  Depreciation is provided on the straight-line method based on
the estimated  useful  lives  of property.  Composite  provisions  for  Missouri
Business' book depreciation approximated 3.38% in 1992, 3.40% in 1991, and 3.37%
in 1990 of the average original cost of depreciable property.

    REVENUES  AND GAS  PURCHASE COSTS.   Gas utility  customers are  billed on a
monthly-cycle basis.  The related  cost  of gas  is  matched with  cycle  billed
revenue  through  the  operation  of  purchased  gas  adjustment  provisions. An
estimate of  unbilled revenues  is  recognized on  a monthly-cycle  basis  which
includes  sales from the cycle-billing  dates to the end  of the month, unbilled
gas purchase costs and revenue related taxes. The accrual for unbilled  revenues
is included in revenues in the statement of operations.

    TAXES  ON INCOME.   The Missouri Business is  included in Western Resources'
consolidated federal and state income tax returns. The Missouri Business' annual
provision  for  income  taxes  included  in  the  statement  of  operations  was
determined  as if the Missouri  Business had filed a  separate federal and state
income tax return but may include benefits from deductions and tax credits  that
are

                                      F-5
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
realizable only on a consolidated basis. Deferred income taxes are not presented
in the accompanying balance sheet as the pending purchase transaction is taxable
and  the deferred income  taxes pertaining to the  Missouri Business will remain
with Western Resources.

    The  Financial  Accounting  Standards  Board  (FASB)  issued  Statement   of
Financial  Accounting Standard  ("SFAS") No.  109, ACCOUNTING  FOR INCOME TAXES,
which is  effective for  fiscal years  beginning after  December 15,  1992.  The
statement  provides for the replacement of  the "deferred method" of interperiod
income tax allocation  with the "liability  method" which bases  the amounts  of
current  and future assets and liabilities on events recognized in the financial
statements and on income tax laws and rates existing at the balance sheet  date.
Western  Resources adopted the provisions of SFAS  No. 109 as of January 1, 1992
for which  there  was no  material  impact on  the  operations of  the  Missouri
Business.

3.  AFFILIATE TRANSACTIONS
    The Missouri Business engages in various transactions with Western Resources
and  its affiliates that are characteristic of a consolidated group under common
control. Western Resources has historically provided the Missouri Business  with
various  financial  and  administrative  functions and  services  for  which the
Missouri Business is charged associated direct costs and expenses. In  addition,
certain  indirect  administrative costs  are allocated  to the  various business
divisions of  Western Resources,  including the  Missouri Business,  principally
based  on  formulas which  consider such  proportionate  variables as  number of
customers, number of employees and property balances. The methods utilized  are,
in the opinion of the management of Western Resources, reasonable.

    Direct  and  indirect  corporate  administrative  costs  including  employee
benefits, information systems support, accounting and office services and  other
general  and administrative  costs charged to  the Missouri  Business by Western
Resources approximated $26.9 million  in 1992, $23.2 million  in 1991 and  $19.5
million in 1990. Amounts are included in "operating, maintenance and general" in
the statement of operations.

    Western  Resources provides financing  and cash management  for the Missouri
Business through a centralized treasury system. Western Resources also  provides
cash needs not generated internally by the Missouri Business operations. Western
Resources'  consolidated interest expense is, in turn, allocated to its business
units, including the Missouri Business, based on  a pro rata formula of its  net
investment in the Missouri Business. Historically, the weighted average interest
rate of Western Resources was 7.6% in 1992, 8.0% in 1991 and 8.4% in 1990.

4.  RATE MATTERS AND REGULATION
    The  Missouri  Business, pursuant  to rate  orders  from the  MPSC, recovers
increases in natural gas costs through various purchased gas adjustment  clauses
(PGA). The annual difference between actual gas cost incurred and cost recovered
through  the application of the PGA are  deferred and amortized through rates in
subsequent periods.

    MPSC RATE PROCEEDINGS.  On February 5, 1993, the Missouri Business filed  an
application  with the MPSC requesting  an increase in natural  gas rates for the
Missouri Business of $20.8 million or seven percent.

    On January  22, 1992,  the MPSC  issued an  order authorizing  the  Missouri
Business  to increase natural gas rates by $7.3 million annually. On February 5,
1992, the  Missouri  Business  filed  an application  for  the  issuance  of  an
accounting  order for  the Missouri Business  to defer  service line replacement
program costs  incurred  since July  1,  1991, including  depreciation  expense,
property

                                      F-6
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

4.  RATE MATTERS AND REGULATION (CONTINUED)
taxes,  and carrying costs for recovery in  the next general rate case. The MPSC
subsequently issued an accounting  order allowing the  deferral of service  line
replacement  program costs. At December 31,  1992, approximately $3.1 million of
these deferrals have been included in deferred charges and other.

    On April 27,  1990, the MPSC  approved an agreement  among Gas Service,  the
MPSC  staff,  and  intervenors  to  increase  natural  gas  rates  $18.5 million
annually, effective May 1, 1990. The Missouri Business discontinued the deferral
of accelerated line  surveys and  carrying charges  on plant  investment in  new
service  lines on April  30, 1990, and  began amortizing the  balance to expense
over a three-year period which began May 1, 1990.

    FERC ORDER NO. 528.  In 1990, the FERC issued Order No. 528 which authorized
new methods for the allocation and  recovery of take-or-pay settlement costs  by
natural gas pipelines from their customers. Negotiation and litigation continues
between  Western Resources and suppliers concerning  the amount of such costs to
be allocated to  the Missouri Business.  Due to the  present uncertainty of  the
outcome  of  the litigation  and negotiations,  the  management of  the Missouri
Business is unable to estimate any further liability for take-or-pay  settlement
costs  incurred by its pipeline suppliers. The  MPSC has approved a mechanism to
recover these take-or-pay costs from the Missouri customers.

    FERC ORDER NO. 636.  On April 8,  1992, the FERC issued Order No. 636  which
is  intended  to  complete  the  deregulation  of  natural  gas  production  and
facilitate competition in the gas transportation industry. Order 636 is expected
to affect  the Missouri  Business in  several ways.  The rules  provide  greater
protection  for pipeline companies by providing  for recovery of all fixed costs
through contracts with local distribution companies and other customers choosing
to transport gas on a firm  (non-interruptable) basis. The order also  separates
the  purchase of natural gas from the transportation and storage of natural gas,
shifting additional responsibility to  distribution companies for the  provision
of  long-term gas supply and transportation to distribution points. The Missouri
Business may  be liable  to one  or more  of its  pipeline suppliers  for  costs
associated  with any reduction in firm  service demands. However, the management
of the Company believes substantially all of these costs will be recovered  from
its  customers and additional transition costs will be immaterial to the results
of operations  of the  Missouri  Business. Moreover,  the Missouri  Business  is
participating  in  pipeline  restructuring negotiations  and  management  of the
Company does not anticipate any material difficulty in it continuing the service
provided in the past.

    TIGHT SANDS.  In December 1991,  the MPSC approved an agreement  authorizing
the  Missouri Business to refund to its customers approximately $20.1 million of
certain anti-trust litigation settlement proceeds  to be collected on behalf  of
the  customers  of the  Missouri Business.  To secure  the refund  of settlement
proceeds, the MPSC authorized the establishment of an independently administered
trust to  collect and  maintain cash  receipts received  under the  Tight  Sands
settlement agreements, and provide for the refunds made. The trust has a term of
10 years.

5.  INTEREST EXPENSE
    Allocated  interest expense  is presented  in the  accompanying statement of
operations net of AFUDC as follows (in thousands of dollars):

<TABLE>
<CAPTION>
                                                                               YEAR ENDED DECEMBER 31,
                                                                           -------------------------------
                                                                             1990       1991       1992
                                                                           ---------  ---------  ---------
<S>                                                                        <C>        <C>        <C>
Interest expense allocated...............................................  $   8,432  $   9,314  $   8,864
Less AFUDC...............................................................        (90)       (20)       (33)
                                                                           ---------  ---------  ---------
                                                                           $   8,342  $   9,294  $   8,831
                                                                           ---------  ---------  ---------
                                                                           ---------  ---------  ---------
</TABLE>

                                      F-7
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  TAXES ON INCOME
    The components of the tax provision (benefit) on income were as follows  (in
thousands of dollars):

<TABLE>
<CAPTION>
                                                                      YEAR ENDED DECEMBER 31,
                                                            --------------------------------------------
                                                                                1992
                                                            --------------------------------------------
                                                             CURRENT   DEFERRED   INVESTMENT
                                                               TAX        TAX     TAX CREDIT     TOTAL
                                                            ---------  ---------  -----------  ---------
<S>                                                         <C>        <C>        <C>          <C>
Federal...................................................  $  (5,762) $   6,669   $    (296)  $     611
State.....................................................       (589)       683      --              94
                                                            ---------  ---------  -----------  ---------
                                                            $  (6,351) $   7,352   $    (296)  $     705
                                                            ---------  ---------  -----------  ---------
                                                            ---------  ---------  -----------  ---------
</TABLE>

<TABLE>
<CAPTION>
                                                                                1991
                                                            --------------------------------------------
                                                             CURRENT   DEFERRED   INVESTMENT
                                                               TAX        TAX     TAX CREDIT     TOTAL
                                                            ---------  ---------  -----------  ---------
<S>                                                         <C>        <C>        <C>          <C>
Federal...................................................  $   2,529  $  (1,815)  $    (299)  $     415
State.....................................................        345       (237)     --             108
                                                            ---------  ---------  -----------  ---------
                                                            $   2,874  $  (2,052)  $    (299)  $     523
                                                            ---------  ---------  -----------  ---------
                                                            ---------  ---------  -----------  ---------
</TABLE>

<TABLE>
<CAPTION>
                                                                                1990
                                                            --------------------------------------------
                                                             CURRENT   DEFERRED   INVESTMENT
                                                               TAX        TAX     TAX CREDIT     TOTAL
                                                            ---------  ---------  -----------  ---------
<S>                                                         <C>        <C>        <C>          <C>
Federal...................................................  $   7,336  $  (8,478)  $    (307)  $  (1,449)
State.....................................................        989     (1,133)     --            (144)
                                                            ---------  ---------  -----------  ---------
                                                            $   8,325  $  (9,611)  $    (307)  $  (1,593)
                                                            ---------  ---------  -----------  ---------
                                                            ---------  ---------  -----------  ---------
</TABLE>

    The  sources of timing differences and the related deferred tax effects were
as follows (in thousands of dollars):

<TABLE>
<CAPTION>
                                                                             YEAR ENDED DECEMBER 31,
                                                                         -------------------------------
                                                                           1990       1991       1992
                                                                         ---------  ---------  ---------
<S>                                                                      <C>        <C>        <C>
Difference between book and tax depreciation...........................  $     989  $   2,910  $   2,381
Insurance reserves.....................................................       (210)       585        601
Pension plan cost accruals and other employee related..................       (679)      (364)       388
Deferred charges.......................................................     (2,060)    (2,395)     1,635
Purchased gas costs....................................................     (2,786)      (915)     2,344
Unbilled revenues......................................................     (5,166)    (3,456)    --
Software development costs.............................................        251      1,574          3
Customer deposits......................................................         50          9     --
                                                                         ---------  ---------  ---------
  Total................................................................  $  (9,611) $  (2,052) $   7,352
                                                                         ---------  ---------  ---------
                                                                         ---------  ---------  ---------
</TABLE>

                                      F-8
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  TAXES ON INCOME (CONTINUED)
    Total income tax expense differed from  the amount computed by applying  the
applicable  federal income tax rate  of 34% to earnings  before taxes on income.
The reasons for the differences for each of the years were as follows:

<TABLE>
<CAPTION>
                                                                              YEAR END DECEMBER 31,
                                                                         -------------------------------
                                                                           1990       1991       1992
                                                                         ---------  ---------  ---------
                                                                            (IN THOUSANDS OF DOLLARS)
<S>                                                                      <C>        <C>        <C>
Computed "expected" tax expense (benefit)..............................  $    (865) $     623  $     755
Flow-through of depreciation expense...................................        174        146        540
Reduction in excess deferred income taxes..............................       (272)        (3)       (55)
State income taxes.....................................................        (95)        72         62
Amortization of investment tax credit..................................       (307)      (299)      (296)
Permanent differences..................................................         62         27         21
Adjustment of prior year provision.....................................       (290)       (43)      (322)
                                                                         ---------  ---------  ---------
Actual tax expense (benefit)...........................................  $  (1,593) $     523  $     705
                                                                         ---------  ---------  ---------
                                                                         ---------  ---------  ---------
</TABLE>

7.  PROPERTY, PLANT AND EQUIPMENT
    The components of  property, plant and  equipment at December  31, 1991  and
1992 were as follows:

<TABLE>
<CAPTION>
                                                                                  1991          1992
                                                                              ------------  ------------
                                                                              (IN THOUSANDS OF DOLLARS)
<S>                                                                           <C>           <C>
Property, plant and equipment:
  Distribution facilities...................................................  $    335,821  $    364,812
  Intangible................................................................         5,579         4,865
  General...................................................................        17,922        19,221
  Construction work in progress.............................................         2,527         4,478
                                                                              ------------  ------------
                                                                                   361,849       393,376
Less accumulated depreciation and amortization..............................      (108,225)     (117,925)
                                                                              ------------  ------------
  Total property, plant and equipment.......................................  $    253,624  $    275,451
                                                                              ------------  ------------
                                                                              ------------  ------------
</TABLE>

8.  EMPLOYEE BENEFIT PLANS
    PENSION.  The employees and retirees of the Missouri Business participate in
Western  Resources'  pension  plans (the  "Plans"),  which  are non-contributory
defined benefit plans  covering substantially all  of Western Resources'  active
and retired employees. The Plans provide benefits based on a participant's years
of service and compensation during the last ten years before retirement. Western
Resources' policy is to fund pension costs accrued subject to limitations set by
the  Employee Retirement  Income Security Act  of 1974 and  the Internal Revenue
Code.

                                      F-9
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

8.  EMPLOYEE BENEFIT PLANS (CONTINUED)
    The following table provides information on the components of pension  cost,
funded status and actuarial assumptions for Western Resources' Plans:

<TABLE>
<CAPTION>
                                                                          YEAR END DECEMBER 31,
                                                                 ---------------------------------------
                                                                     1990         1991          1992
                                                                 ------------  -----------  ------------
                                                                        (IN THOUSANDS OF DOLLARS)
<S>                                                              <C>           <C>          <C>
Pension Cost:
  Service cost.................................................  $      6,345  $     6,589  $      9,847
  Interest cost on projected benefit obligations...............        18,729       20,985        29,457
  Return on plan assets........................................        (3,819)     (59,161)      (38,967)
  Deferred gain (loss) on plan assets..........................       (15,721)      38,015         7,705
  Net amortization.............................................           242         (131)         (948)
                                                                 ------------  -----------  ------------
    Net pension cost...........................................  $      5,776  $     6,297  $      7,094
                                                                 ------------  -----------  ------------
                                                                 ------------  -----------  ------------
Funded Status:
  Actuarial present value of benefit obligations:
  Vested.......................................................  $    183,262  $   200,435  $    316,100
  Non-vested...................................................        12,790       13,935        19,331
                                                                 ------------  -----------  ------------
    Total......................................................  $    196,052  $   214,370  $    335,431
                                                                 ------------  -----------  ------------
                                                                 ------------  -----------  ------------
  Plan assets (principally debt and equity securities) at fair
   value.......................................................  $    274,622  $   324,780  $    452,372
  Projected benefit obligation.................................       262,831      282,062       424,232
                                                                 ------------  -----------  ------------
  Plan assets in excess of projected benefit obligation........        11,791       42,718        28,140
  Unrecognized transition asset................................        (1,370)      (1,253)       (3,092)
  Unrecognized prior service costs.............................        29,321       27,216        55,886
  Unrecognized net gain........................................       (40,198)     (69,494)     (106,486)
                                                                 ------------  -----------  ------------
  Accrued pension costs........................................  $       (456) $      (813) $    (25,552)
                                                                 ------------  -----------  ------------
                                                                 ------------  -----------  ------------
</TABLE>

<TABLE>
<S>                                                         <C>        <C>        <C>
Actuarial Assumptions:
  Discount rate...........................................       8.0%       8.0%   8.0%-8.5%
  Annual salary increase rate.............................       6.0%       6.0%        6.0%
  Long-term rate of return................................       8.0%       8.0%   8.0%-8.5%
</TABLE>

    The  employees and retirees of  the Missouri Business comprise approximately
30% of total active employees and retirees of Western Resources at December  31,
1992.  As provided in the Agreement, Western Resources will transfer to Southern
Union the assets and liabilities of  the Western Resources' Plans applicable  to
the  employees and retirees of the Missouri Business, which based on a projected
benefit obligation actuarial calculation at December 31, 1992 approximates  $100
million.

    POST-RETIREMENT.   Western Resources provides health care and life insurance
benefits to its  retired employees.  The cost of  retiree health  care and  life
insurance  benefits is recognized  as expense when claims  and premiums for life
insurance policies  are  paid.  The  cost of  providing  health  care  and  life
insurance  benefits for active employees and associated retirees of the Missouri
Business was approximately $6.1 million in  1992, $5.9 million in 1991 and  $5.3
million in 1990. Western Resources' cost of providing benefits for 2,928, 1,911,
and  1,886 retirees is not separable from the cost of providing benefits for the
5,138, 4,474, and 4,614 active employees in 1992, 1991 and 1990 respectively.

    In December  1990 the  Financial Accounting  Standards Board  (FASB)  issued
Statement  of  Financial  Accounting  Standard  ("SFAS")  No.  106,  "EMPLOYERS'
ACCOUNTING FOR POST-RETIREMENT BENEFITS

                                      F-10
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

8.  EMPLOYEE BENEFIT PLANS (CONTINUED)
OTHER THAN  PENSIONS."  Western Resources  implemented  SFAS No.  106  effective
January 1, 1993. SFAS 106 requires the accrual of post-retirement benefits other
than  pensions, primarily medical  benefits costs, during  the years an employee
provides services.

    The Missouri  Business  annual  expense under  SFAS  106,  commencing  after
adoption  is  approximately  $5.9  million and  its  total  unfunded accumulated
post-retirement benefit obligation is approximately $41 million which obligation
will be amortized over 20 years.  These costs historically have been allowed  in
rates  when paid. To mitigate the impact of SFAS 106 expenses, Western Resources
has implemented programs to reduce health  care costs and has received  approval
from  the MPSC to permit initial deferral of  SFAS 106 expense and include it in
the computation  of cost  of service  net  of an  income stream  generated  from
Western Resources' corporate-owned life insurance (COLI). If the Commission were
to  recognize post-retirement benefit  costs under a  different method, earnings
could be impacted  negatively. The  cash surrender value  of Western  Resources'
COLI is not included in the assets acquired pursuant to the Agreement.

    POST-EMPLOYMENT.   The FASB has issued  SFAS 112, "EMPLOYERS' ACCOUNTING FOR
POST-EMPLOYMENT BENEFITS." The  new statement  requires the  recognition of  the
liability  to  provide  post-employment  benefits when  the  liability  has been
incurred. Adoption  of SFAS  112 is  required  no later  than January  1,  1994.
Although  the effect of adoption  has not been determined,  the Company does not
expect adoption to have a material effect on the Missouri Business operations.

    EARLY RETIREMENT AND VOLUNTARY SEPARATION  PLANS.  In January 1992,  Western
Resources  initiated early  retirement plans and  voluntary separation programs.
The voluntary early retirement plans were offered to all vested participants  in
Western  Resources' pension plan who reached the age of 55 with 10 or more years
of service on or before May 1, 1992. Costs associated with the early  retirement
plans  and voluntary separation  programs attributable to  the Missouri Business
totaled approximately $2.6 million, and are reflected in "operating, maintenance
and general" in  the accompanying  statement of  operations for  the year  ended
December 31, 1992.

    SAVINGS.     Western  Resources  also   maintains  savings  plans  in  which
substantially all  of  its  employees  participate.  Western  Resources  matches
employees'  contributions up to specified maximum limits. The funds of the plans
are deposited with a trustee  and invested at each  employee's option in one  or
more  investment funds,  including holding  stock in  a Western  Resources, Inc.
fund. Western Resources's contributions on  behalf of employees of the  Missouri
Business  were $0.9 million  in 1992, $0.9  million in 1991  and $0.8 million in
1990.

9.  COMMITMENTS AND CONTINGENCIES
    GAS PURCHASE COMMITMENTS.  The  Missouri Business has commitments under  gas
purchase  contracts which  contain certain  minimum purchase  provisions for the
firm supply  of  quantities of  natural  gas.  In general,  these  gas  purchase
contracts  provide for  the make-up  of volumes which  are not  purchased by the
Missouri Business and take  requirements that are  substantially lower than  the
total  end  use  demand serviced  by  the  Missouri Business.  In  addition, the
Missouri  Business  has  contractual  access  to  substantial  pipeline  storage
capacity which significantly minimizes the risk that the Missouri Business would
be susceptible to take-or-pay provisions contained in certain of its contracts.

    LEASE  COMMITMENTS.    At  December  31,  1992,  the  Missouri  Business had
operating leases covering  various property  and equipment.  Rent expense  under
those  leases was $1.2 million in 1992, $1.3 million in 1991 and $0.8 million in
1990. Future estimated rental commitments are $0.3 million in 1993, $0.3 million
in 1994, $0.2 million in 1995, $0.1 million in 1996 and $0.1 million in 1997. In

                                      F-11
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

9.  COMMITMENTS AND CONTINGENCIES (CONTINUED)
addition, the Missouri Business  entered into a  building lease commencing  July
1993  which includes a rent holiday through November 1995. Lease commitments are
$0.03 million in 1995, $0.4 million in 1996 and $0.4 million in 1997.

    ENVIRONMENTAL.  The Missouri Business owns or is otherwise associated with a
number of sites where  manufactured gas plants  were previously operated.  These
plants  were commonly used to supply gas service in the late 19th and early 20th
centuries, in  certain cases  by corporate  predecessors to  Western  Resources.
By-products  and residues from manufactured gas  could be located at these sites
and at some time in the future may require remediation by the U.S. Environmental
Protection Agency ("EPA") or delegated state regulatory authority. By virtue  of
notice  under the Purchase and Sale  Agreement and its preliminary, non-invasive
review, the Company is aware  of eleven such sites  in the service territory  of
the  Missouri Business. Based on information  reviewed thus far, it appears that
neither Western Resources nor any predecessor in interest ever owned or operated
at least three of those sites.  Western Resources has informed the Company  that
it  was notified in 1991 by the EPA that the EPA was evaluating one of the sites
(in St.  Joseph, Missouri)  for any  potential threat  to human  health and  the
environment.  Western Resources has  also advised the Company  that to date, the
EPA has not notified it that any  further action may be required. Evaluation  of
the  remainder  of  the  sites  by  appropriate  federal  and  state  regulatory
authorities may occur  in the future.  At the  present time and  based upon  the
preliminary  information available to it, the Company believes that the costs of
any remediation efforts that may  be required for these  sites for which it  may
ultimately  have responsibility will not exceed  the aggregate amount subject to
substantial sharing by Western Resources pursuant to the Environmental Liability
Agreement to be  entered into at  the closing of  the Missouri Acquisition.  See
"The  Missouri Acquisition -- Environmental." In  addition, the Company is aware
of the existence of other significant potentially responsible parties from  whom
contribution  for remediation would  be sought, and would  expect to make claims
upon its insurers (Western Resources has already done so on its own behalf)  and
institute  appropriate requests  for rate relief.  The Company  is not presently
aware of any other  environmental matters in the  Missouri Business which  could
reasonably  be expected to have a material impact on its operations or financial
position.

    LEGAL PROCEEDINGS.  The Missouri Business  is involved in various legal  and
environmental  proceedings that management of the Company considers to be normal
kinds of actions  to which  an enterprise  of its  size and  nature is  subject.
Management  of the Company believes that adequate provision has been made within
the financial  statements  for  these matters  and  accordingly  believes  their
ultimate dispositions will not have a material adverse effect upon the business,
operations or financial position of the Missouri Business.

                                      F-12
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                                 BALANCE SHEET
                                  (UNAUDITED)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                                SEPTEMBER 30, 1993
                                                                                                ------------------
                                                                                                  (THOUSANDS OF
                                                                                                     DOLLARS)
<S>                                                                                             <C>
Property, plant and equipment.................................................................     $    416,703
  Less accumulated depreciation and amortization..............................................         (125,460)
                                                                                                     ----------
                                                                                                        291,243
                                                                                                     ----------
Current assets:
  Cash........................................................................................                8
  Accounts receivable, billed and unbilled....................................................           10,816
  Materials and supplies......................................................................            4,338
  Other current assets........................................................................            2,401
                                                                                                     ----------
                                                                                                         17,563
                                                                                                     ----------
Deferred charges and other....................................................................           10,398
                                                                                                     ----------
  Total assets................................................................................     $    319,204
                                                                                                     ----------
                                                                                                     ----------
                                              EQUITY AND LIABILITIES
Equity in net assets acquired.................................................................     $    288,181
                                                                                                     ----------
Current liabilities -- accounts payable and accrued liabilities...............................           25,174
Deferred credits and other....................................................................            5,849
                                                                                                     ----------
  Total liabilities...........................................................................           31,023
Contingencies.................................................................................          --
                                                                                                     ----------
  Total equity and liabilities................................................................     $    319,204
                                                                                                     ----------
                                                                                                     ----------
</TABLE>

            See accompanying notes to interim financial statements.

                                      F-13
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                            STATEMENT OF OPERATIONS
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                             NINE MONTHS ENDED
                                                                                               SEPTEMBER 30,
                                                                                          ------------------------
                                                                                             1992         1993
                                                                                          -----------  -----------
                                                                                           (THOUSANDS OF DOLLARS)
<S>                                                                                       <C>          <C>
Revenues................................................................................  $   201,007  $   233,291
                                                                                          -----------  -----------
Cost and expenses:
  Gas purchase costs....................................................................      121,130      141,241
  Operating, maintenance and general....................................................       50,315       53,117
  Taxes, other than on income...........................................................       18,361       21,470
  Depreciation and amortization.........................................................        9,716        9,347
                                                                                          -----------  -----------
  Total costs and expenses..............................................................      199,522      225,175
                                                                                          -----------  -----------
Net operating revenue...................................................................        1,485        8,116
                                                                                          -----------  -----------
Other income (expenses):
  Interest expense......................................................................       (6,482)      (6,799)
  Other, net............................................................................          718        2,268
                                                                                          -----------  -----------
  Total other income (expenses), net....................................................       (5,764)      (4,531)
                                                                                          -----------  -----------
Earnings (loss) before income taxes.....................................................       (4,279)       3,585
Income tax provision (benefit)..........................................................       (1,417)         997
                                                                                          -----------  -----------
Net earnings (loss).....................................................................  $    (2,862) $     2,588
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>

            See accompanying notes to interim financial statements.

                                      F-14
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

                     NOTES TO INTERIM FINANCIAL STATEMENTS
                                  (UNAUDITED)

FINANCIAL STATEMENTS

    The  interim  financial  statements are  unaudited  but, in  the  opinion of
management of  the  Company,  reflect  all  adjustments  (consisting  of  normal
recurring  accruals) necessary for a fair presentation of the financial position
and operations for such periods in conformity with generally accepted accounting
principles. The operations for any interim period are not necessarily indicative
of operations for the  full year. These financial  statements should be read  in
conjunction  with  the audited  financial statements  and  notes thereto  of the
Missouri Business of  Gas Service ("Missouri  Business") contained elsewhere  in
this Registration Statement.

ACCOUNTING PRONOUNCEMENTS

    Western   Resources  adopted  the  provisions   of  Statement  of  Financial
Accounting Standard ("SFAS") No. 106, EMPLOYER'S ACCOUNTING FOR  POST-RETIREMENT
BENEFITS OTHER THAN PENSIONS, as of January 1, 1993. This statement requires the
accrual  of  post-retirement  benefits other  than  pensions,  primarily medical
benefit costs, during the years an employee provides service.

    Based on  actuarial projections  and an  adoption of  the transition  method
allowing  a  20-year amortization  of  the accumulated  benefit  obligation, the
annual expense attributable to the employees of the Missouri Business under SFAS
No. 106 will be approximately $5.9 million in 1993 (as compared to approximately
$2.9 million on a cash basis) of which $5.1 million relates to medical  benefits
and  $0.8 million  relates to  life insurance  benefits. Annual  expense in 1993
under SFAS 106 includes $0.5 million  service cost, $3.4 million interest  cost,
and  $2.0  million amortization  of the  transition obligation.  The accumulated
benefit obligation calculated at January 1, 1993 is approximately $41 million of
which $34.9 million relates to medical benefits and $6.1 million relates to life
insurance benefits.  The  actuarial computations  for  post-retirement  benefits
assumed a discount rate of 8.5%. Health care costs were assumed to be increasing
at an initial rate of 14%, gradually reducing by 1% per year to a long term rate
of  6% for purposes  of calculating the post-retirement  benefits. If the health
care costs increased at a  rate of 1%, the combined  effect on the 1993  service
and  interest cost components would be a 2% increase and the accumulated benefit
obligation would  increase 2%.  These costs  have historically  been allowed  in
rates when paid.

    To  mitigate  the impact  of  SFAS No.  106  expense, Western  Resources has
implemented programs to reduce health care costs. In addition, Western Resources
filed an application with the Missouri Public Service Commission ("MPSC") for an
order permitting the initial deferral of  SFAS No. 106 expense. To mitigate  the
impact  SFAS  No. 106  expense will  have on  rate increases,  Western Resources
proposed inclusion in the future computation of cost of service the actual  SFAS
No.  106  expense  and  an  income  stream  generated  from  Western  Resources'
corporate-owned life  insurance  (COLI). To  the  extent SFAS  No.  106  expense
exceeds  income from the COLI program, this  excess will be deferred (as allowed
by the FASB Emerging  Issues Task Force  Issue No. 92-12)  and offset by  income
generated  through the deferral period by the  COLI program. The MPSC has issued
an order approving the Western  Resources application. Should the income  stream
generated  by the  COLI program  not be  sufficient to  offset the  SFAS No. 106
expense through the  deferral period,  the MPSC  order allows  recovery of  such
deficit  through  the rate  making process.  Included  in "Deferred  charges and
other" in the balance sheet at September 30, 1993 is a deferral of $2.2  million
representing  the SFAS No. 106  costs deferred pursuant to  the above noted MPSC
order. The cash surrender  value of Western Resources'  COLI is not included  in
the  assets acquired  pursuant to the  Agreement for Purchase  of Assets between
Western Resources and Southern Union Company (the "Agreement").

                                      F-15
<PAGE>
                        MISSOURI BUSINESS OF GAS SERVICE
                    (A DIVISION OF WESTERN RESOURCES, INC.)

               NOTES TO INTERIM FINANCIAL STATEMENTS (CONTINUED)
                                  (UNAUDITED)

CONTINGENCIES

    ENVIRONMENTAL.  The Missouri Business owns or is otherwise associated with a
number of sites where  manufactured gas plants  were previously operated.  These
plants  were commonly used to supply gas service in the late 19th and early 20th
centuries, in  certain cases  by corporate  predecessors to  Western  Resources.
By-products  and residues from manufactured gas  could be located at these sites
and at some time in the future may require remediation by the U.S. Environmental
Protection Agency ("EPA") or delegated state regulatory authority. By virtue  of
notice  under the Purchase and Sale  Agreement and its preliminary, non-invasive
review, the Company is aware  of eleven such sites  in the service territory  of
the  Missouri Business. Based on information  reviewed thus far, it appears that
neither Western Resources nor any predecessor in interest ever owned or operated
at least three of those sites.  Western Resources has informed the Company  that
it  was notified in 1991 by the EPA that the EPA was evaluating one of the sites
(in St.  Joseph, Missouri)  for any  potential threat  to human  health and  the
environment.  Western Resources has  also advised the Company  that to date, the
EPA has not notified it that any  further action may be required. Evaluation  of
the  remainder  of  the  sites  by  appropriate  federal  and  state  regulatory
authorities may occur  in the future.  At the  present time and  based upon  the
preliminary  information available to it, the Company believes that the costs of
any remediation efforts that may  be required for these  sites for which it  may
ultimately  have responsibility will not exceed  the aggregate amount subject to
substantial sharing by Western Resources pursuant to the Environmental Liability
Agreement to be  entered into at  the closing of  the Missouri Acquisition.  See
"The  Missouri Acquisition -- Environmental." In  addition, the Company is aware
of the existence of other significant potentially responsible parties from  whom
contribution  for remediation would  be sought, and would  expect to make claims
upon its insurers (Western Resources has already done so on its own behalf)  and
institute  appropriate requests  for rate relief.  The Company  is not presently
aware of any other  environmental matters in the  Missouri Business which  could
reasonably  be expected to have a material impact on its operations or financial
position.

    LEGAL PROCEEDINGS.  The Missouri Business  is involved in various legal  and
environmental  proceedings that  the management of  the Company  considers to be
normal kinds  of actions  to  which an  enterprise of  its  size and  nature  is
subject.  Management of  the Company believes  that adequate  provision has been
made within the financial statements for these matters and accordingly  believes
their  ultimate dispositions  will not have  a material adverse  effect upon the
business, operations or financial position of the Missouri Business.

OTHER MATTERS

    On July 9, 1993,  Western Resources reached a  definitive agreement to  sell
the  Missouri Business to Southern Union Company for approximately $360 million,
to be adjusted at the time of closing.

    On August 10,  1993, the United  States Congress passed,  and the  President
signed  into law,  the Omnibus  Budget Reconciliation  Act of  1993 (the "Act").
Among other provisions  in the  Act, effective  January 1,  1993, the  corporate
federal  income tax  rate was  increased to 35%  on corporate  taxable income in
excess of $10 million.

    On October 5,  1993, the MPSC  issued a rate  order increasing the  Missouri
Business  natural gas  rates by  approximately $9.8  million annually, effective
beginning October 15, 1993.

                                      F-16
<PAGE>
          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION

   
    The  following unaudited pro forma  combined condensed financial information
consists of the Unaudited Pro Forma Combined Condensed Statements of  Operations
for  the nine months ended September 30, 1993, the twelve months ended September
30, 1993 and  the year ended  December 31,  1992 (the "Pro  Forma Statements  of
Operations")  and the Unaudited Pro Forma Combined Condensed Balance Sheet as of
September 30, 1993  (the "Pro Forma  Balance Sheet," and  together with the  Pro
Forma  Statements of Operations, the "Pro  Forma Financial Statements"). The Pro
Forma Statements of Operations have been prepared by combining the  consolidated
statements of operations of the Company with the statements of operations of the
Missouri  Business for the periods indicated, adjusted to give effect to (i) the
issuance of 2,000,000 shares  of Common Stock in  the Rights Offering, (ii)  the
completion  of  the  Missouri Acquisition,  including  the sale  of  Senior Debt
Securities to fund such Acquisition and (iii) the sale of Senior Debt Securities
to refinance certain short-term debt,  current maturities of long-term debt  and
certain   long-term  debt  outstanding  at  September   30,  1993,  as  if  such
transactions had been consummated as of  the beginning of each such period.  The
Pro  Forma Balance Sheet has been prepared by combining the consolidated balance
sheet of the  Company as of  September 30, 1993  with the balance  sheet of  the
Missouri  Business as of September 30, 1993,  adjusted to give effect to (i) the
issuance of 2,000,000 shares  of Common Stock in  the Rights Offering, (ii)  the
completion  of  the  Missouri Acquisition,  including  the sale  of  Senior Debt
Securities to fund such Acquisition and (iii) the sale of Senior Debt Securities
to refinance certain short-term debt,  current maturities of long-term debt  and
certain  long-term  debt  outstanding  as  of September  30,  1993,  as  if such
transactions had been consummated on September 30, 1993.
    

    The Pro  Forma Financial  Statements are  based  on and  should be  read  in
conjunction  with  the  Company's Consolidated  Financial  Statements  and notes
thereto, included in the 1992 Form 10-K and the Third Quarter Form 10-Q that are
incorporated by reference  into this  Prospectus, and  the Historical  Financial
Statements  of  the  Missouri  Business  that  are  included  elsewhere  in this
Prospectus.

    The Pro Forma Statements of Operations are not necessarily indicative of the
combined effects on the Company's results of operations that would have resulted
if the  Rights  Offering and  the  Missouri Acquisition  had  actually  occurred
earlier.

   
    The pro forma adjustments are based on preliminary assumptions and estimates
made  by the  Company's management regarding  anticipated efficiencies resulting
from the  combined  operations,  reductions  in  costs  planned  by  management,
purchase  accounting adjustments  and the  fair market  value of  certain assets
acquired in the Missouri Business. The Pro Forma Statements of Operations do not
reflect the  financial impact,  if any,  of (i)  the rate  increases granted  to
Southern Union Gas and the Missouri Business during 1993 not yet earned and (ii)
the pro forma effect of the results of operations of the Rio Grande Acquisition.
Gas  service rates,  established by regulatory  authorities, are  based upon the
utility's costs  including  operating,  administrative  and  finance  costs  and
include  a return on  equity. As a  result, reductions in  a utility's costs may
have a direct impact  on the level of  rates it is allowed  to collect from  its
customers  in the future. See "Business -- Regulation." The actual allocation of
the consideration paid for the Missouri Business may differ from that  reflected
in  the Pro Forma Financial Statements after a more extensive review of the fair
market values of  the assets acquired  and liabilities assumed  in the  Missouri
Acquisition  has  been  completed.  Amounts allocated  will  be  based  upon the
estimated fair values at the time of the Missouri Acquisition, which could  vary
significantly   from  the  amounts  as  of  September  30,  1993.  The  Missouri
Acquisition will be accounted for using the purchase method of accounting.
    

   
    The following table sets forth  a summary of the  sources and uses of  funds
resulting  from (i)  the issuance  of 2,000,000  shares of  Common Stock  in the
Rights Offering, (ii) the completion of the Missouri Acquisition, including  the
sale  of Senior Debt Securities  to fund such Acquisition  and (iii) the sale of
Senior Debt Securities to refinance certain short-term debt, current  maturities
of  long-term debt  and certain long-term  debt outstanding as  of September 30,
1993, as if  such transactions had  been consummated on  September 30, 1993  (in
thousands):
    
<TABLE>
<CAPTION>
                                           SOURCES OF FUNDS
- ------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>
Gross Proceeds from Rights Offering........................................................  $  50,000
Sale of Senior Debt Securities.............................................................    475,000
                                                                                             ---------
                                                                                             $ 525,000
                                                                                             ---------
                                                                                             ---------

<CAPTION>
                                            USES OF FUNDS
- ------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>
Acquisition of Missouri Business...........................................................  $ 342,402
Refinancing of short-term borrowings used to fund the Rio Grande Acquisition...............     31,050
Refinancing of short-term debt.............................................................     28,256
Refinancing of current maturities of long-term debt........................................     20,000
Refinancing of long-term debt..............................................................     85,000
Stock and debt issuance costs and premiums on early extinguishment of debt (a).............     18,292
                                                                                             ---------
                                                                                             $ 525,000
                                                                                             ---------
                                                                                             ---------
<FN>
- ------------------------------
(a) Includes a $3.3 million premium on the $50.0 million of 10.5% debentures due
    2017  and a $10.4  million premium on  the $10.0 million  of 9.45% notes due
    2004 and $25.0 million of 10% notes due 2012 for the early extinguishment of
    this debt.
</TABLE>

                                      PF-1
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                  FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1993
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   135,868  $    233,291                   $   369,159
Gas purchase costs.....................................       67,866       141,241                       209,107
                                                         -----------  ------------                   -----------
  Operating margin.....................................       68,002        92,050                       160,052
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       35,289        53,117  $    (6,880)(a)       81,526
  Taxes, other than on income..........................        9,806        21,470                        31,276
  Amortization of acquisition adjustment...............        2,292                      1,111(b)         3,403
  Depreciation and amortization........................        7,968         9,347          460(c)        17,775
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       55,355        83,934       (5,309)         133,980
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       12,647         8,116        5,309           26,072
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................       (8,691)       (6,799)      15,371(d)       (24,648)
                                                                                        (24,529)(e)
  Other, net...........................................          861         2,268         (436)(f)        2,693
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (7,830)       (4,531)      (9,594)         (21,955)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............        4,817         3,585       (4,285)           4,117
Federal and state income taxes (benefit)...............        1,825           997       (1,733)(g)        1,089
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        2,992         2,588       (2,552)           3,028
Preferred dividends....................................          843                       (843)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     2,149  $      2,588  $    (1,709)     $     3,028
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $       .41                                 $       .42
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,243,934                  2,000,000(i)     7,243,934
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                      PF-2
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                 FOR THE TWELVE MONTHS ENDED SEPTEMBER 30, 1993
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   201,408  $    330,240                   $   531,648
Gas purchase costs.....................................      107,943       203,112                       311,055
                                                         -----------  ------------                   -----------
  Operating margin.....................................       93,465       127,128                       220,593
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       47,206        69,710  $    (9,173)(a)      107,743
  Taxes, other than on income..........................       13,231        28,147                        41,378
  Amortization of acquisition adjustment...............        3,064                      1,481(b)         4,545
  Depreciation and amortization........................       10,169        12,803          614(c)        23,586
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       73,670       110,660       (7,078)         177,252
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       19,795        16,468        7,078           43,341
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................      (11,633)       (9,148)      20,400(d)       (33,086)
                                                                                        (32,705)(e)
  Other, net...........................................        3,105         2,764         (581)(f)        5,288
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (8,528)       (6,384)     (12,886)         (27,798)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............       11,267        10,084       (5,808)          15,543
Federal and state income taxes (benefit)...............        4,058         3,119       (2,421)(g)        4,756
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        7,209         6,965       (3,387)          10,787
Preferred dividends....................................        1,468                     (1,468)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     5,741  $      6,965  $    (1,919)     $    10,787
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $      1.10                                 $      1.49
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,242,340                  2,000,000(i)     7,242,340
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                      PF-3
<PAGE>
                             SOUTHERN UNION COMPANY

              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1992
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                         -------------------------           PRO FORMA
                                                          SOUTHERN      MISSOURI    ----------------------------
                                                            UNION       BUSINESS      ADJUSTMENTS     COMBINED
                                                         -----------  ------------  ---------------  -----------
                                                           (THOUSANDS OF DOLLARS, EXCEPT SHARES AND PER SHARE
                                                                                AMOUNTS)
<S>                                                      <C>          <C>           <C>              <C>
Operating revenues.....................................  $   192,445  $    297,956                   $   490,401
Gas purchase costs.....................................      102,918       183,001                       285,919
                                                         -----------  ------------                   -----------
  Operating margin.....................................       89,527       114,955                       204,482
                                                         -----------  ------------                   -----------
Operating expenses:
  Operating, maintenance and general...................       46,313        66,908  $    (9,173)(a)      104,048
  Taxes, other than on income..........................       13,115        25,038                        38,153
  Amortization of acquisition adjustment...............        2,958                      1,481(b)         4,439
  Depreciation and amortization........................        9,779        13,172          614(c)        23,565
                                                         -----------  ------------  ---------------  -----------
    Total operating expenses...........................       72,165       105,118       (7,078)         170,205
                                                         -----------  ------------  ---------------  -----------
    Net operating revenue..............................       17,362         9,837        7,078           34,277
                                                         -----------  ------------  ---------------  -----------
Other income (expenses):
  Interest.............................................      (12,459)       (8,831)      19,551(d)       (34,444)
                                                                                        (32,705)(e)
  Other, net...........................................        5,928         1,214         (581)(f)        6,561
                                                         -----------  ------------  ---------------  -----------
    Total other income (expenses), net.................       (6,531)       (7,617)     (13,735)         (27,883)
                                                         -----------  ------------  ---------------  -----------
    Earnings before income taxes (benefit).............       10,831         2,220       (6,657)           6,394
Federal and state income taxes (benefit)...............        4,440           705       (2,370)(g)        2,775
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations before preferred
 dividends.............................................        6,391         1,515       (4,287)           3,619
Preferred dividends....................................        2,500                     (2,500)(h)
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations available for
 common stock..........................................  $     3,891  $      1,515  $    (1,787)     $     3,619
                                                         -----------  ------------  ---------------  -----------
                                                         -----------  ------------  ---------------  -----------
Earnings from continuing operations per common share...  $       .74                                 $       .50
                                                         -----------                                 -----------
                                                         -----------                                 -----------
Weighted average shares outstanding....................    5,259,314                  2,000,000(i)     7,259,314
                                                         -----------                ---------------  -----------
                                                         -----------                ---------------  -----------
</TABLE>

 See accompanying notes to unaudited pro forma combined condensed statements of
                                  operations.

                                      PF-4
<PAGE>
                             SOUTHERN UNION COMPANY
         NOTES TO PRO FORMA COMBINED CONDENSED STATEMENTS OF OPERATIONS

   
    The following are adjustments to the  Pro Forma Statements of Operations  to
reflect  (i) the  issuance of  2,000,000 shares  of Common  Stock in  the Rights
Offering, (ii) the completion of the Missouri Acquisition, including the sale of
Senior Debt Securities  to fund such  Acquisition and (iii)  the sale of  Senior
Debt  Securities  to refinance  certain short-term  debt, current  maturities of
long-term debt and certain long-term debt outstanding at September 30, 1993.
    

(a) Reflects the adjustment to  operations, maintenance and general for  certain
    anticipated  cost savings resulting from the consolidation of operations and
    corporate  functions,  the  integration  of  corporate  management  and  the
    elimination of certain other duplicate administrative functions.

(b)  Reflects  amortization  of the  estimated  excess purchase  price  over the
    historical book  carrying  value of  the  assets acquired  of  the  Missouri
    Business on a straight line basis over a 30 year period.

(c)  Reflects  depreciation  expense  related  to  the  purchase  of  additional
    equipment over their estimated  useful lives. See note  (a) of Notes to  Pro
    Forma Balance Sheet.

   
(d)  Reflects  the  removal  of  historical  interest  expense  of  the Missouri
    Business, the elimination of interest expense associated with the borrowings
    on the revolving  credit facility used  for the purchase  and redemption  of
    Southern  Union  preferred  stock, the  elimination  of  historical interest
    expense associated with the  refinancing of $20.0 million  of 10 1/8%  notes
    due  1994 and the elimination of historical interest expense associated with
    the refinancing of $50.0 million of 10.5% debentures due 2017, $10.0 million
    of 9.45% notes due 2004 and $25.0 million of 10% notes due 2012.
    

   
(e) Reflects interest expense on $430.3 million of the $475.0 million of  Senior
    Debt Securities at an annual interest rate of 7.60%. The difference of $44.7
    million  of Senior Debt Securities to be  sold and used to refinance certain
    short-term  borrowings,  including  those  used  to  fund  the  Rio   Grande
    Acquisition  (which transaction closed on  September 30, 1993), and purchase
    estimated net capital expenditures to  be incurred by the Missouri  Business
    subsequent  to September  30, 1993  and prior  to closing,  and related debt
    issuance costs were  assumed to have  occurred on September  30, 1993. As  a
    result,  interest expense associated with  these borrowings is not reflected
    in the Pro Forma Statements of Operations.
    

   
(f) Reflects  the amortization  of  debt issuance  costs of  approximately  $4.2
    million   associated  with  the  sale  of  $475.0  million  of  Senior  Debt
    Securities, a  $3.3 million  premium on  the early  extinguishment of  $50.0
    million  of 10.5%  debentures due  2017 and a  $10.4 million  premium on the
    early extinguishment of  $10.0 million  of 9.45%  notes due  2004 and  $25.0
    million  of 10% notes due 2012 on a straight line basis over the life of the
    new debt. See note (e) above.
    

                                      PF-5
<PAGE>
                             SOUTHERN UNION COMPANY
   NOTES TO PRO FORMA COMBINED CONDENSED STATEMENTS OF OPERATIONS (CONTINUED)

(g) Reflects the income  tax provision (benefit) associated  with the pro  forma
    adjustments calculated using the applicable statutory state income tax rates
    and  the statutory federal income tax rate  of 35% for the nine months ended
    September 30, 1993, 34.75%  for the twelve months  ended September 30,  1993
    and 34% for the year ended December 31, 1992. The 34.75% rate for the twelve
    months ended September 30, 1993 is a weighted average of two statutory rates
    in effect during the twelve month period.

    Income  tax expense, on a pro forma  combined basis, differs from the amount
    computed when applying the applicable statutory federal income tax rates  to
    earnings  before  income  taxes.  The reasons  for  the  differences  are as
    follows:

<TABLE>
<CAPTION>
                                                                                        TWELVE MONTHS
                                                  YEAR ENDED      NINE MONTHS ENDED    ENDED SEPTEMBER
                                               DECEMBER 31, 1992  SEPTEMBER 30, 1993       30, 1993
                                               -----------------  ------------------  ------------------
                                                                (THOUSANDS OF DOLLARS)
<S>                                            <C>                <C>                 <C>
Computed "expected" tax expense..............      $   2,174          $    1,441          $    5,401
Items for which there are no tax
 consequences, principally amortization of
 additional purchase cost assigned to utility
 plant.......................................          1,025                 576                 809
Amortization of excess deferred income
 taxes.......................................            (55)               (233)               (300)
Flow through of depreciation expense.........            540                 (37)                150
Amortization of investment tax credit........           (457)               (249)               (332)
Adjustment of tax reserve....................                               (409)               (409)
Adjustment of prior year provision...........           (322)                                   (322)
Tax loss on sale of real estate in excess of
 book loss...................................           (322)                                   (322)
Other........................................            192                                      81
                                                     -------             -------             -------
                                                   $   2,775          $    1,089          $    4,756
                                                     -------             -------             -------
                                                     -------             -------             -------
</TABLE>

(h) Reflects the  elimination of  preferred stock dividends  resulting from  the
    purchase and redemption of all outstanding Southern Union preferred stock in
    March and June 1993.

(i)  Reflects the  issuance of  2,000,000 shares of  Common Stock  in the Rights
    Offering.

                                      PF-6
<PAGE>
                             SOUTHERN UNION COMPANY

                   PRO FORMA COMBINED CONDENSED BALANCE SHEET

                               SEPTEMBER 30, 1993
                                  (UNAUDITED)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                HISTORICAL
                                                        --------------------------            PRO FORMA
                                                          SOUTHERN      MISSOURI    ------------------------------
                                                           UNION        BUSINESS      ADJUSTMENTS       COMBINED
                                                        ------------  ------------  ----------------  ------------
                                                                          (THOUSANDS OF DOLLARS)
<S>                                                     <C>           <C>           <C>               <C>
Property, plant and equipment.........................  $    372,757  $    416,703  $     11,950(a)   $    811,410
                                                                                          10,000(b)
Less accumulated depreciation and amortization........      (141,546)     (125,460)                       (267,006)
                                                        ------------  ------------  ----------------  ------------
                                                             231,211       291,243        21,950           544,404
Additional purchase cost assigned to utility plant,
 net..................................................        92,645                      44,437(c)        137,082
                                                        ------------  ------------  ----------------  ------------
  Net property, plant and equipment...................       323,856       291,243        66,387           681,486
Current assets........................................        40,440        17,563                          58,003
Deferred charges and other assets.....................        34,751        10,398        17,792(d)        104,581
                                                                                          41,640(e)
                                                        ------------  ------------  ----------------  ------------
    Total.............................................  $    399,047  $    319,204  $    125,819      $    844,070
                                                        ------------  ------------  ----------------  ------------
                                                        ------------  ------------  ----------------  ------------

<CAPTION>
                                       STOCKHOLDERS' EQUITY AND LIABILITIES
<S>                                                     <C>           <C>           <C>               <C>
Common stockholders' equity:
  Common stock........................................  $      5,304                $      2,000(f)   $      7,304
  Premium on capital stock............................       144,925                      47,500(f)        192,425
  Retained earnings...................................           492                                           492
  Less treasury stock, at cost........................          (794)                                         (794)
  Equity in net assets acquired.......................                $    288,181      (288,181)(g)
                                                        ------------  ------------  ----------------  ------------
  Total common stockholders' equity...................       149,927       288,181      (238,681)          199,427
Long-term debt........................................        89,122                     475,000(h)        479,122
                                                                                         (50,000)(h)
                                                                                         (25,000)(h)
                                                                                         (10,000)(h)
Current liabilities and current maturities of
 long-term debt.......................................       128,399        25,174        15,166(i)         89,433
                                                                                         (28,256)(j)
                                                                                         (31,050)(j)
                                                                                         (20,000)(k)
Deferred credits and other liabilities................        10,384         5,849        38,640(l)         54,873
Accumulated deferred income taxes.....................        21,215                                        21,215
Commitments and contingencies.........................       --            --                              --
                                                        ------------  ------------  ----------------  ------------
    Total.............................................  $    399,047  $    319,204  $    125,819      $    844,070
                                                        ------------  ------------  ----------------  ------------
                                                        ------------  ------------  ----------------  ------------
</TABLE>

See accompanying notes to unaudited pro forma combined condensed balance sheet.

                                      PF-7
<PAGE>
                             SOUTHERN UNION COMPANY

         NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET

   
    The following are adjustments to the Pro Forma Balance Sheet as of September
30, 1993 to reflect (i) the issuance of 2,000,000 shares of Common Stock in  the
Rights  Offering, (ii) the completion of the Missouri Acquisition, including the
sale of Senior Debt Securities to fund  such Acquisition, and (iii) the sale  of
Senior  Debt Securities to refinance certain short-term debt, current maturities
of long-term debt  and certain long-term  debt outstanding as  of September  30,
1993:
    

(a)  Reflects  the purchase  accounting adjustments  of  $4.4 million  to record
    acquired  assets  at  their  estimated  fair  market  value,  and  estimated
    additional  expenditures to purchase  non-transferable leases on automobiles
    of $4.3 million and data processing equipment and software of $3.3 million.

(b) Reflects the recording of the purchase of estimated net capital expenditures
    to be incurred by the Missouri Business subsequent to September 30, 1993 and
    prior to closing as per the Missouri Asset Purchase Agreement.

(c) Reflects the estimated excess of the purchase price over the historical book
    carrying value of  the assets  acquired of  the Missouri  Business of  $44.4
    million.

   
(d) Reflects the capitalization of estimated debt issuance costs associated with
    the  sale of $475.0  million of Senior  Debt Securities and  premiums on the
    early extinguishment of $85.0 million of long-term debt to be amortized on a
    straight line basis over the life of the new debt. See note (h) below.
    

(e)  Reflects  the  recording  of  (i)  a  regulatory  asset  of  $38.6  million
    representing   the  deferral  of   the  actuarially  calculated  accumulated
    post-retirement benefit obligation assumed in  the purchase and (ii) a  $3.0
    million  contribution to the Missouri Business' employees' qualified defined
    benefit plans  in excess  of  the minimum  required contribution  under  the
    Internal  Revenue Code  Section 412,  as determined  by the  plans' actuary,
    pursuant to the  MPSC Stipulation. See  note (l) below  and the  "Accounting
    Pronouncements"  note included  in Notes  to the  Missouri Business' Interim
    Financial Statements included elsewhere herein.

(f) Reflects Southern Union's  receipt of $50.0 million  in gross proceeds  from
    the  completion of the  Rights Offering, less  approximately $0.5 million in
    estimated stock issuance  costs, assuming 2,000,000  shares of Common  Stock
    are issued in the Rights Offering at $25.00 per share.

(g)  Reflects the elimination of the equity  in the Missouri Business net assets
    acquired.

   
(h) Reflects the sale of Senior Debt Securities totalling $475.0 million and the
    refinancing of $50.0 million of 10.5% debentures due 2017, $10.0 million  of
    9.45% notes due 2004 and $25.0 million of 10% notes due 2012.
    

(i)  Reflects the  recording of certain  liabilities of  $15.2 million resulting
    from the acquisition transactions including the purchase of non-transferable
    leases on  automobiles of  $4.3  million, the  purchase of  data  processing
    equipment  and software of $3.3 million,  a $3.0 million contribution to the
    Missouri Business' employees' qualified defined benefit plans (see note  (e)
    above),  and  the  recording  of severance  accruals  of  approximately $2.4
    million and other  estimated liabilities and  contingencies associated  with
    the acquisition of approximately $2.2 million.

   
(j)   Reflects  the utilization of  a portion of  the proceeds from  the sale of
    Senior Debt  Securities  to retire  borrowings  on the  Company's  revolving
    credit  facility, including borrowings  of $31.1 million  for the Rio Grande
    Acquisition and borrowings used for the purchase and redemption of preferred
    stock.
    

(k) Reflects the  utilization of  a portion  of the  proceeds from  the sale  of
    Senior  Debt Securities for  the repayment of  certain current maturities of
    long-term debt.

(l)  Reflects   the  recording   of  the   actuarially  calculated   accumulated
    post-retirement benefit obligation of $38.6 million. See note (e) above.

                                      PF-8
<PAGE>
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    NO  DEALER,  SALESPERSON 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 OR  THE ACCOMPANYING
PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST  NOT
BE  RELIED UPON  AS HAVING BEEN  AUTHORIZED. THIS PROSPECTUS  SUPPLEMENT AND THE
ACCOMPANYING PROSPECTUS DO NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION  OF
AN  OFFER  TO  BUY  ANY SECURITIES  TO  WHICH  IT  RELATES, OR  AN  OFFER  TO OR
SOLICITATION  OF  ANY  PERSON  IN  ANY  JURISDICTION  IN  WHICH  SUCH  OFFER  OR
SOLICITATION  WOULD  BE  UNLAWFUL.  NEITHER  THE  DELIVERY  OF  THIS  PROSPECTUS
SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS  NOR ANY SALE MADE THEREUNDER  SHALL,
UNDER  ANY CIRCUMSTANCES, CREATE  AN IMPLICATION THAT  THE INFORMATION CONTAINED
HEREIN OR THEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.

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

                               TABLE OF CONTENTS

                             PROSPECTUS SUPPLEMENT

<TABLE>
<CAPTION>
                                                    PAGE
                                                   -----
<S>                                              <C>
Use of Proceeds................................     S-2
Ratio of Earnings to Fixed Charges.............     S-2
Description of the Senior Notes................     S-2
Underwriting...................................     S-5
                        PROSPECTUS
Available Information..........................      2
Incorporation of Certain Documents by
 Reference.....................................      2
The Company....................................      3
The Missouri Acquisition.......................      4
Use of Proceeds................................      6
Ratio of Earnings to Fixed Charges.............      6
Capitalization.................................      7
Unaudited Pro Forma Combined Condensed
 Financial Information.........................      8
Selected Historical Financial Information......      16
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations....................................      18
Business.......................................      26
Description of the Senior Debt Securities......      37
Plan of Distribution...........................      51
Legal Matters..................................      52
Experts........................................      52
Index to Financial Statements..................     F-1
</TABLE>

   
                                  $475,000,000
    

                             SOUTHERN UNION COMPANY

   
                          7.60% SENIOR NOTES DUE 2024
    
                               -----------------
                             PROSPECTUS SUPPLEMENT

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

                              MERRILL LYNCH & CO.

                           SMITH BARNEY SHEARSON INC.
   
                                JANUARY 18, 1994
    

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