WISCONSIN GAS CO
S-3/A, 1999-01-08
NATURAL GAS TRANSMISSION
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     As filed with the Securities and Exchange Commission on January 8, 1999
                                                              Reg. No. 333-68783

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                 --------------

                                 AMENDMENT NO. 1
                                       TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                              Wisconsin Gas Company
             (Exact name of registrant as specified in its charter)

                Wisconsin                                39-0476515   
     (State or other jurisdiction of                 (I.R.S. Employer
      incorporation or organization)                Identification No.)

                            626 East Wisconsin Avenue
                           Milwaukee, Wisconsin 53202
                                 (414) 385-7000
                        (Address, including zip code, and
                    telephone number, including area code, of
                    registrant's principal executive offices)

                                Joseph P. Wenzler
                            Senior Vice President and
                             Chief Financial Officer
                              Wisconsin Gas Company
                            626 East Wisconsin Avenue
                           Milwaukee, Wisconsin 53202
                                 (414) 385-7000
                       (Name, address, including zip code,
                      and telephone number, including area
                           code, of agent for service)

                                 with a copy to:
        Jere D. McGaffey, Esq.
         Jay O. Rothman, Esq.                      Wilbur C. Delp, Jr., Esq.
            Foley & Lardner                             Sidley & Austin
       777 East Wisconsin Avenue                   One First National Plaza
      Milwaukee, Wisconsin  53202                  Chicago, Illinois  60603

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

         Approximate  date of commencement of proposed sale to the public:  From
time to time after this registration statement becomes effective.
         If the only securities  being registered on this Form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. |_|
         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933,  other than  securities  offered only in connection with
dividend or interest reinvestment plans, please check the following box. |_|
         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. |_|
         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. |_|
         If delivery of the  prospectus  is expected to be made pursuant to Rule
434, please check the following box. |_| 
                               -----------------

         The Registrant hereby amends this  Registration  Statement on such date
or dates as may be necessary to delay its  effective  date until the  Registrant
shall file a further amendment which specifically  states that this Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the Securities  Act of 1933 or until this  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.


<PAGE>



THE  INFORMATION  IN  THIS  PROSPECTUS  SUPPLEMENT  IS NOT  COMPLETE  AND MAY BE
CHANGED. WE MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED
WITH THE  SECURITIES  AND EXCHANGE  COMMISSION  IS  EFFECTIVE.  THIS  PROSPECTUS
SUPPLEMENT  AND THE  ACCOMPANYING  PROSPECTUS  IS NOT AN  OFFER  TO  SELL  THESE
SECURITIES AND WE ARE NOT SOLICITING OFFERS TO BUY THESE SECURITIES IN ANY STATE
WHERE THE OFFER OR SALE IS NOT PERMITTED.



PROSPECTUS SUPPLEMENT Issued January   , 1999 (Subject to Completion)
(To Prospectus dated January   , 1999)

                                   $50,000,000

                              Wisconsin Gas Company

                                % Notes due 2009
                             ----------------------

                      Interest payable on January and July
                             ----------------------

     The Company may, at any time, redeem the notes, in whole or in part, at
                     the redemption prices described herein.

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

                     PRICE ___% AND ACCRUED INTEREST, IF ANY
                              ---------------------


                                     Underwriting     
                      Price          Discounts and          Proceeds to
                    to Public         Commissions             Company
               ----------------   --------------------   ------------------

Per Note.....                 %                     %                     %

Total........  $                  $                      $


The Securities and Exchange Commission and state securities  regulators have not
approved or  disapproved  these  securities,  or determined  if this  prospectus
supplement  or  the  accompanying   prospectus  is  truthful  or  complete.  Any
representation to the contrary is a criminal offense.

Morgan Stanley & Co. Incorporated  expects to deliver the notes to purchasers on
January , 1999.
                             ----------------------

MORGAN STANLEY DEAN WITTER

                 ROBERT W. BAIRD & CO.
                     INCORPORATED

                                   A.G. EDWARDS & SONS, INC.

January    , 1999


<PAGE>


         You should rely only on the information  contained,  or incorporated by
reference in, this prospectus  supplement and the  accompanying  prospectus.  We
have not authorized  anyone to provide you with information  different from that
contained in this prospectus supplement and the accompanying prospectus.  We are
offering  to  sell  the  Notes  and  seeking  offers  to buy the  Notes  only in
jurisdictions where offers and sales are permitted. The information contained or
incorporated  by reference in this  prospectus  supplement and the  accompanying
prospectus is accurate only as of the dates of this  prospectus  supplement  and
the  accompanying  prospectus,  regardless  of the  time  of  delivery  of  this
prospectus supplement and the accompanying  prospectus or any sale of the Notes.
In this prospectus  supplement and the accompanying  prospectus,  the "Company,"
"we," "us" and "our" refer to Wisconsin Gas Company.

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

                                TABLE OF CONTENTS

                              Prospectus Supplement
                                                                            Page

Forward Looking Statements................................................   S-3
Use of Proceeds...........................................................   S-3
Description of the Notes..................................................   S-4
Underwriting..............................................................   S-8
                                                     Prospectus              
Where You Can Find More Information.......................................     3
The Company...............................................................     4
Use of Proceeds...........................................................     4
Ratios to Earnings to Fixed Charges.......................................     4
Description of the Notes..................................................     5
Plan of Distribution......................................................    14
Legal Matters.............................................................    15
Experts...................................................................    15
                             ----------------------



                                       S-2

<PAGE>



                           FORWARD-LOOKING STATEMENTS

         Statements  made  in  this  prospectus  supplement,   the  accompanying
prospectus  or in the  documents  incorporated  by reference in this  prospectus
supplement or the  prospectus  that are not  statements  of historical  fact are
forward-looking  statements.  Such  statements  are subject to certain risks and
uncertainties  that could cause actual results to differ materially from current
expectations.  These  factors  include  but are not  limited  to the  risks  and
uncertainties  listed  below.  All of these factors are difficult to predict and
generally are beyond management's control.

         o        The  impact of warmer-  or  colder-than-normal  weather on the
                  energy business;

         o        Economic conditions,  including the availability of individual
                  discretionary income and changes in interest rates;

         o        Changes in natural gas prices and supply availability;

         o        Increased competition in deregulated energy markets;

         o        The pace and extent of energy industry deregulation;

         o        Regulatory, governmental and judicial decisions;

         o        Increases in costs to clean up environmental contamination;

         o        Our ability to increase rates;

         o        Market demand for our products and services; and

         o        Unanticipated  expenses or outcomes  associated with year 2000
                  date conversion.


                                 USE OF PROCEEDS

         The net proceeds from the sale of the Notes  (estimated to be $ , after
deduction of underwriting  discounts and commissions and expenses payable by the
Company) will be used to repay  commercial  paper  borrowings  used to retire at
maturity the entire $40,000,000  aggregate  principal amount of our 7 1/2% Notes
due 1998.  The 7 1/2% Notes were  retired on November  16,  1998.  As of January
_____,  1999, the average  weighted  interest rate on the short-term  debt to be
repaid was ____%.  The  remainder of the net  proceeds  will be used for working
capital and other general corporate purposes. Pending the application of the net
proceeds,  we expect to invest  such  proceeds  in  short-term  interest-bearing
instruments or other investment-grade securities.


                                       S-3

<PAGE>



                            DESCRIPTION OF THE NOTES

         This description of the particular  terms of the Notes  supplements and
should be read in conjunction  with the  statements  under  "Description  of the
Notes" in the accompanying  prospectus.  Additionally,  the statements regarding
certain  provisions of the Notes and the indenture under which the Notes will be
issued are summaries and do not purport to be complete.

General

         The Notes will be issued under an  indenture,  dated as of September 1,
1990, between us and Firstar Bank Milwaukee, N.A., as trustee.

         The Notes will be unsecured  obligations and will mature on January __,
2009.  The Notes will bear interest at the rate of ___ % per annum.  Interest on
the Notes will accrue  from  January  ___,  1999 or from the most recent date to
which interest has been paid or duly provided for. Interest on the Notes will be
payable semi-annually on January __ and July __ of each year, commencing on July
__, 1999.  Interest on each Note will be payable to the person in whose name the
Note (or any  predecessor  Note) is  registered  at the close of business on the
January __ or July __, as the case may be,  immediately  preceding  an  interest
payment  date.  Interest on the Notes will be computed on the basis of a 360-day
year of twelve 30-day  months.  The Notes are not entitled to the benefit of any
sinking  fund.  Principal  of and  interest  on the  Notes  will be  payable  in
Milwaukee, Wisconsin.

         If any interest  payment date,  redemption date or maturity date of the
Notes  is not a  business  day in  Milwaukee,  Wisconsin,  then the  payment  of
principal,  premium,  if any,  and interest may not be made on such date but may
instead be made on the next  business day. No interest will accrue on any amount
payable on an interest payment date, redemption date or maturity date after such
interest payment date, redemption date or maturity date, as the case may be.

Redemption At The Option Of The Company

         The Notes will be  redeemable,  in whole or in part, at our option,  on
any date at a redemption price equal to the greater of (a) 100% of the principal
amount of the Notes to be redeemed  or (b) the sum of the present  values of the
remaining  scheduled  payments of principal and interest on the Notes (exclusive
of interest  accrued to such redemption date) discounted to such redemption date
on a semiannual  basis  (assuming a 360-day  year  consisting  of twelve  30-day
months) at the  Treasury  Rate plus __ basis  points,  plus  accrued  and unpaid
interest  on the  principal  amount  being  redeemed  to such  redemption  date;
provided,  however,  that  installments  of  interest  on Notes that are due and
payable  on an  interest  payment  date  falling  on or  prior  to the  relevant
redemption date will be payable to the holders of such Notes, registered as such
at the close of business on the  relevant  record date  according to their terms
and the provisions of the indenture.

         "Treasury  Rate"  means,  with respect to any  redemption  date for the
Notes,  (a) the yield,  under the heading  that  represents  the average for the
immediately preceding week, appearing in the most recently published statistical
release  designated  "H.15(519)" or any successor  publication that is published
weekly  by the  Board  of  Governors  of the  Federal  Reserve  System  and that
establishes yields on actively traded United States Treasury securities adjusted
to constant maturity under the caption "Treasury  Constant  Maturities," for the
maturity  corresponding  to the  Comparable  Treasury  Issue (if no  maturity is
within  three  months  before or after the  maturity  date,  yields  for the two
published

                                       S-4

<PAGE>


maturities most closely  corresponding to the Comparable Treasury Issue shall be
determined and the Treasury Rate shall be interpolated or extrapolated from such
yields on a straight-line  basis,  rounding to the nearest month) or (b) if such
release (or any successor  release) is not published  during the week  preceding
the calculation  date or does not contain such yields,  the rate per annum equal
to the  semi-annual  equivalent  yield to  maturity of the  Comparable  Treasury
Issue,  calculated using a price for the Comparable Treasury Issue (expressed as
a percentage of its principal amount) equal to the Comparable Treasury Price for
such  redemption  date.  The  Treasury  Rate  shall be  calculated  on the third
business day preceding the redemption date.

         "Comparable  Treasury Issue" means the United States Treasury  security
selected by the Independent Investment Banker as having a maturity comparable to
the remaining  term of the Notes to be redeemed  that would be utilized,  at the
time of selection  and in  accordance  with  customary  financial  practice,  in
pricing new issues of corporate  debt  securities of comparable  maturity to the
remaining term of the Notes.

         "Independent Investment Banker" means Morgan Stanley & Co. Incorporated
or, if such firm is unwilling or unable to select the Comparable Treasury Issue,
an independent  investment banking institution of national standing appointed by
the trustee after consultation with us.

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

         "Reference Treasury Dealer" means (1) Morgan Stanley & Co. Incorporated
and its respective  successors;  provided however,  that if Morgan Stanley & Co.
Incorporated  shall cease to be a primary U.S.  Government  securities dealer in
New York City (a "Primary Treasury Dealer"),  we will substitute another Primary
Treasury Dealer, and (2) any other Primary Treasury Dealer selected by us.

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

         We will  mail  notice of any  redemption  at least 30 days but not more
than 60 days before any redemption  date to each holder of Notes to be redeemed.
If we choose to redeem less than all the Notes, the trustee will select, in such
manner as it deems fair and appropriate, the Notes of such series to be redeemed
in whole or in part.

         Unless we default in payment of the redemption  price, on and after any
redemption  date interest  will cease to accrue on the Notes or portion  thereof
called for redemption.


                                       S-5

<PAGE>


Permanent Global Securities

         The  Notes  will  be  represented  by one  or  more  global  securities
registered in the name of The  Depository  Trust  Company,  as  Depositary  (the
"Depositary"),  or a nominee  (we will  refer to the Notes  represented  by such
global note security as a "book-entry note security"). Each global note security
representing book-entry note securities will be deposited with, or on behalf of,
the Depositary, and registered in the name of the Depositary or a nominee of the
Depositary.

         The  Depositary  has  indicated  it  intends  to follow  the  following
procedures with respect to book-entry note securities.

         Ownership of beneficial interests in book-entry note securities will be
limited to persons that have accounts with the Depositary for the related global
note  security  ("participants")  or  persons  that may hold  interests  through
participants.  Upon the issuance of a global note security,  the Depositary will
credit,  on its book-entry  registration and transfer system,  the participants'
accounts with the respective principal amounts of the book-entry note securities
represented   by  such  global  note   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 the book-entry note
securities.  Ownership of book-entry  note  securities will be shown on, and the
transfer of such  ownership  interests  will be effected only  through,  records
maintained by the  Depositary for the related global note security (with respect
to interests of participants)  and on the records of participants  (with respect
to interests of persons holding through  participants).  The laws of some states
may require that certain purchasers of securities take physical delivery of such
securities  in  definitive  form.  These  laws may  impair  the  ability to own,
transfer or pledge beneficial interests in book-entry note securities.

         So long as the Depositary  for a global note security,  or its nominee,
is the  registered  owner of that global note  security,  the  Depositary or its
nominee,  as the case may be, will be considered the sole owner or holder of the
book-entry  note  securities  represented  by such global note  security for all
purposes under the indenture.  Except as described below,  beneficial  owners of
book-entry note securities will not be entitled to receive physical  delivery of
a certificate in definitive form  representing  Notes and will not be considered
the owners or holders of Notes  under the  indenture.  Accordingly,  each person
beneficially  owning  book-entry  note securities must rely on the procedures of
the Depositary for the related global note security and, if such person is not a
participant, on the procedures of the participant through which such person owns
its  interest,  to  exercise  any  rights of a holder  under the  indenture.  We
understand,  however, that under existing industry practice, the Depositary will
authorize  the  persons  on whose  behalf  it holds a global  note  security  to
exercise certain rights of holders of Notes.

         We will make  payments of  principal  of, and  premium and  interest on
book-entry note securities to the Depositary or its nominee, as the case may be,
as the  registered  holder of the related  global note  security.  (Section 307)
Wisconsin  Gas Company,  the trustee and any other agent of ours or agent of the
trustee  will not have any  responsibility  or  liability  for any aspect of the
records  relating  to or  payments  made  on  account  of  beneficial  ownership
interests in a global note security or for maintaining, supervising or reviewing
any records relating to beneficial ownership interests.

         We expect that the Depositary, upon receipt of any payment of principal
of, or premium or interest on, a global note security,  will immediately  credit
participants'  accounts with payments in amounts proportionate to the respective
amounts of book-entry note securities held by each participant

                                       S-6

<PAGE>


as shown on the records of such  Depositary.  We also  expect  that  payments by
participants  to owners of beneficial  interests in book-entry  note  securities
held  through  those   participants   will  be  governed  by  standing  customer
instructions  and customary  practices,  as is now the case with the  securities
held for the  accounts  of  customers  in bearer form or  registered  in "street
name," and will be the responsibility of those participants.

         We will issue  certificated  Notes in  exchange  for each  global  note
security if the  Depositary  is at any time  unwilling  or unable to continue as
Depositary  or  ceases  to be a  registered  clearing  agency  and  a  successor
Depositary registered as a clearing agency is not appointed. In addition, we may
at any time and in our sole discretion determine not to have the book-entry note
securities of the Notes  represented by one or more global note  securities and,
in that event,  will issue  certificated  Notes in exchange  for the global note
securities of the Notes. Global note securities will also be exchangeable by the
holders  for  certificated  Notes if an event of  default  with  respect  to the
book-entry note securities represented by those global Notes has occurred and is
continuing. Any certificated Notes issued in exchange for a global note security
will be registered in such name or names as the  Depositary  shall  instruct the
trustee. We expect that such instructions will be based upon directions received
by the  Depositary  from  participants  with respect to ownership of  book-entry
Notes relating to such global note security.

         The Depositary has further advised us that the Depositary's  management
is aware that some computer  applications,  systems, and the like for processing
data that are dependent upon calendar  dates,  including  dates before,  on, and
after January 1, 2000,  may encounter  "Year 2000  problems." The Depositary has
informed its participants  and other members of the financial  community that it
has developed  and is  implementing  a program so that its systems,  as the same
relate to the timely payment of distributions  (including principal and interest
payments) to securityholders,  book-entry  deliveries,  and settlement of trades
within the Depositary, continue to function appropriately. This program includes
a  technical  assessment  and a  remediation  plan,  each of which is  complete.
Additionally,  the Depositary's plan includes a testing phase, which is expected
to be completed within appropriate time frames.

         However,  the Depositary's  ability to perform properly its services is
also  dependent  upon other  parties,  including  but not limited to issuers and
their agents,  as well as third party vendors from whom the Depositary  licenses
software and hardware, and third party vendors on whom the Depositary relies for
information  or the  provision  of  services,  including  telecommunication  and
electrical utility service providers,  among others. The Depositary has informed
its  participants  and  other  members  of the  financial  community  that it is
contacting  (and will  continue to contact)  third party  vendors  from whom the
Depositary  acquires  services to: (1) impress upon them the  importance of such
services  being  Year 2000  compliant;  and (2)  determine  the  extent of their
efforts  for Year 2000  remediation  (and,  as  appropriate,  testing)  of their
services.  In addition,  the  Depositary  is in the process of  developing  such
contingency plans as it deems appropriate.

         We have obtained the foregoing  information  concerning  the Depositary
and the Depositary's  book-entry  system from sources we believe to be reliable,
but we take no responsibility for the accuracy of this information.

                                       S-7

<PAGE>



                                  UNDERWRITING

         Under  the  terms  and  subject  to  the  conditions  contained  in  an
underwriting agreement dated the date hereof (the "Underwriting Agreement"), the
underwriters named below (the "Underwriters") have severally agreed to purchase,
and we have agreed to sell to them, the respective principal amount of Notes set
forth opposite their respective names below.

                                                          Principal
                  Name                                 Amount of Notes
                  ----                              --------------------
Morgan Stanley & Co. Incorporated...................   $
Robert W. Baird & Co. Incorporated..................
A.G. Edwards & Sons, Inc............................      ____________    

         Total......................................      $50,000,000
                                                          ===========


         The Underwriting Agreement provides that the obligations of the several
Underwriters  to pay for and accept  delivery of the Notes are subject to, among
other things, the approval of certain legal matters by their counsel and certain
other  conditions.  The  Underwriters  are obligated to take and pay for all the
Notes if any are taken.

         The  Underwriters  propose  initially to offer part of the Notes to the
public at the public  offering  price set forth on the cover page  hereof and in
part to certain dealers at prices that represent a concession not in excess of %
of the  principal  amount of the Notes.  Any  Underwriter  may  allow,  and such
dealers may reallow,  a concession not in excess of % of the principal amount of
the Notes to certain other dealers. After the initial offering of the Notes, the
offering  price and other  selling  terms may from time to time be varied by the
Underwriters.

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

         In order to facilitate the offering of the Notes,  the Underwriters may
engage in transactions that stabilize, maintain or otherwise affect the price of
the Notes. Specifically, the Underwriters may over-allot in connection with this
offering,  creating  short  positions  in the Notes for  their own  account.  In
addition,  to cover  over-allotments or to stabilize the price of the Notes, the
Underwriters may bid for, and purchase,  Notes in the open market.  Finally, the
Underwriters may reclaim selling concessions allowed to an underwriter or dealer
for  distributing  Notes  in  this  offering,  if  the  Underwriters  repurchase
previously   distributed  Notes  in  transactions  that  cover  syndicate  short
positions, in stabilization  transactions or otherwise.  Any of these activities
may stabilize or maintain the market price of the Notes above independent market
levels. The Underwriters are not required to engage in these activities, and may
end any of these activities at any time.

         We  have  agreed  to  indemnify  the   Underwriters   against   certain
liabilities, including liabilities under the Securities Act of 1933, as amended.

                                       S-8

<PAGE>


         The  Underwriters  or their  affiliates  have  provided  and may in the
future continue to provide investment banking and other financial services to us
in the ordinary course of business for which they have received and will receive
customary compensation.


                                       S-9

<PAGE>



PROSPECTUS







                                   $50,000,000

                              Wisconsin Gas Company

                                      Notes
                                   -----------

Wisconsin Gas Company may offer from time to time unsecured  notes. The specific
terms of any notes offered will be included in a supplement to this  prospectus.
The prospectus  supplement will also describe the manner in which the notes will
be offered.

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

The Securities and Exchange Commission and state securities  regulators have not
approved or disapproved  these  securities,  or determined if this prospectus is
truthful or complete. Any representation to the contrary is a criminal offense.

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


MORGAN STANLEY DEAN WITTER

                  ROBERT W. BAIRD & CO.
                      INCORPORATED

                                  A.G. EDWARDS & SONS, INC.







January   , 1999


<PAGE>


         You should rely only on the  information  contained or  incorporated by
reference in this prospectus and the accompanying prospectus supplement. We have
not  authorized  anyone to  provide  you with  information  different  from that
contained in this prospectus and the accompanying prospectus supplement.  We are
offering  to  sell  the  notes  and  seeking  offers  to buy the  notes  only in
jurisdictions where offers and sales are permitted. The information contained in
this prospectus and the accompanying  prospectus  supplement is accurate only as
of the dates of this  prospectus  and the  accompanying  prospectus  supplement,
regardless  of the time of  delivery  of this  prospectus  and the  accompanying
prospectus  supplement  or any sale of the  notes.  In this  prospectus  and the
accompanying prospectus supplement, the "Company," "we," "us" and "our" refer to
Wisconsin Gas Company.
                            ------------------------

                                TABLE OF CONTENTS
                                                                           Page

WHERE YOU CAN FIND MORE INFORMATION............................................3

THE COMPANY....................................................................4

USE OF PROCEEDS................................................................4

RATIOS OF EARNINGS TO FIXED CHARGES............................................4

DESCRIPTION OF THE NOTES.......................................................5

PLAN OF DISTRIBUTION..........................................................14

LEGAL MATTERS.................................................................15

EXPERTS.......................................................................15


                                       -2-

<PAGE>



                       WHERE YOU CAN FIND MORE INFORMATION

         We file annual,  quarterly and special reports,  and other  information
with the Securities and Exchange Commission.  You may read and copy any reports,
statements  or  other  information  that  we file  with  the  Commission  at the
Commission's public reference rooms in Washington, D.C., New York, New York, and
Chicago,  Illinois.  Please call the Commission at 1-  800-SEC-0330  for further
information  on the public  reference  rooms.  Our  Commission  filings are also
available to the public from commercial  document  retrieval services and on the
Internet    world   wide   web   site    maintained   by   the   Commission   at
"http://www.sec.gov".

         We have filed with the Commission a registration  statement on Form S-3
under the Securities Act of 1933 with respect to the notes. This prospectus does
not contain all of the  information  set forth in such  registration  statement,
certain  parts of which  have  been  omitted  in  accordance  with the rules and
regulations of the  Commission.  For further  information,  reference is made to
such registration statement.

         The Commission  allows us to "incorporate by reference" the information
we file with them, which means we can disclose  important  information to you by
referring to those  documents.  The information  incorporated by reference is an
important part of this prospectus. The most recent information that we file with
the Commission  automatically  updates and supersedes any older information.  We
incorporate by reference the following  documents we have filed or may file with
the Commission pursuant to Section 13 of the Securities Exchange Act of 1934:

         o        Our Annual Report on Form 10-K for the year ended December 31,
                  1997; and

         o        Our  Quarterly  Reports  on Form 10-Q for the  quarters  ended
                  March 31, June 30 and September 30, 1998; and

         o        All documents filed by us pursuant to Section 13(a), 13(c), 14
                  or 15(d) of the Securities Exchange Act of 1934 after the date
                  of this  prospectus,  until all of the notes being  offered by
                  this prospectus are sold.

         You may request a copy of any or all of the  information  that has been
incorporated  by  reference  in this  prospectus  but not  delivered  with  this
prospectus  at no charge to you.  If you would like to obtain  this  information
from us, please direct your request, either in writing or by telephone to Robert
A.  Nuernberg at Wisconsin Gas Company,  626 East Wisconsin  Avenue,  Milwaukee,
Wisconsin 53202 (Telephone: (414) 385-7000).


                                       -3-

<PAGE>


                                   THE COMPANY

         Wisconsin  Gas Company is a Wisconsin  corporation  and a  wholly-owned
subsidiary  of WICOR,  Inc.  We are the  largest  distributor  of natural gas in
Wisconsin,  and conduct all of our business in Wisconsin.  At December 31, 1997,
we  distributed  gas  to  approximately  521,000  residential,   commercial  and
industrial customers in 521 communities throughout Wisconsin with an approximate
population  of  2,000,000  based  on 1997  estimates  provided  by the  State of
Wisconsin.  We are subject to the jurisdiction of the Public Service  Commission
of Wisconsin as to various phases of our operations,  including  rates,  service
and the issuance of securities.

         Our  principal  executive  offices  are  located at 626 East  Wisconsin
Avenue, Milwaukee, Wisconsin 53202, and our telephone number is (414) 385-7000.

         Wisconsin Gas Company's parent,  WICOR, Inc., is a diversified  holding
company with two principal  business groups.  WICOR's Energy Group is engaged in
natural gas distribution and related services,  and WICOR's  Manufacturing Group
is engaged in the  manufacture of pumps and  processing  equipment used to pump,
control,  transfer,  hold and  filter  water  and  other  fluids.  WICOR  has no
obligation with respect to and is not a guarantor of the notes.

                                 USE OF PROCEEDS

         The net  proceeds  from  the  sale of the  notes  will be  added to our
general  funds and used for general  corporate  purposes.  Net proceeds from the
sale of the notes may also, depending on market conditions, be used to discharge
a  portion  of our  outstanding  debt.  The debt to be  discharged,  if any,  is
described in the applicable prospectus supplement.

                       RATIOS OF EARNINGS TO FIXED CHARGES

         Set forth below are the ratios of earnings to fixed charges (unaudited)
for Wisconsin Gas Company for the twelve months ended September 30, 1998 and for
the last five years:




       Twelve Months     
           Ended                     Year Ended December 31,
    September 30, 1998   -------------------------------------------------
                           1997      1996      1995      1994      1993
                           ----      ----      ----      ----      ----

           3.67            4.54      4.90      3.96      2.89       2.92



         The  ratio of  earnings  to fixed  charges  for the nine  months  ended
September 30, 1998 was 2.77. For the purpose of computing the ratios of earnings
to fixed  charges,  earnings  have been  calculated  by adding to income  before
interest  expense,  federal and state  income taxes and the  estimated  interest
component of rentals. Fixed charges represent interest expense,  amortization of
debt  discount,  premium and expense and the  estimated  interest  component  of
rentals.


                                       -4-

<PAGE>



                            DESCRIPTION OF THE NOTES

         This prospectus  describes  certain general terms and provisions of the
notes.  When we offer to sell a particular series of notes, we will describe the
specific  terms  of  the  series  in  a  supplement  that  will  accompany  this
prospectus.  We will also  indicate  in the  prospectus  supplement  whether the
general terms and provisions  described in this prospectus apply to a particular
series of notes.

         We  may  offer  under  this  prospectus  up  to  $50,000,000  aggregate
principal amount of notes, or if notes are issued at a discount,  such principal
amount as may be sold for an initial public offering price of up to $50,000,000.
Unless otherwise specified in a supplement to this prospectus, the notes will be
our direct,  unsecured  obligations  and will rank equally with all of our other
unsecured and unsubordinated indebtedness.

         The notes will be issued under an indenture,  dated  September 1, 1990,
between us and Firstar Bank  Milwaukee,  N.A., as trustee.  There is no limit on
the aggregate  principal amount of notes that may be issued under the indenture.
The indenture provides that notes may be issued from time to time in one or more
series  pursuant  to  the  terms  of  one  or  more  officers'  certificates  or
supplemental  indentures creating the series. As of the date of this prospectus,
there are two series of notes with an aggregate principal amount of $110,000,000
outstanding under the indenture.

         We have  summarized  selected  portions  of the  indenture  below.  The
summary is not  complete.  The form of the indenture  has been  incorporated  by
reference as an exhibit to the  registration  statement  and you should read the
indenture for provisions  that may be important to you. In the summary below, we
have included references to the section numbers of the indenture so that you can
easily locate these  provisions.  Capitalized terms used in the summary have the
meaning specified in the indenture.

General

         The terms of each series of notes will be established by or pursuant to
a resolution of our Board of Directors and set forth or determined in the manner
provided in an officers'  certificate or by a supplemental  indenture.  (Section
301)  The  particular  terms of each  series  of notes  will be  described  in a
prospectus   supplement   relating  to  such  series   (including   any  pricing
supplement).

         We can issue an unlimited  amount of notes under the indenture that may
be in one or more  series  with the same or  various  maturities,  at par,  at a
premium,  or at a  discount.  We  will  set  forth  in a  prospectus  supplement
(including  any  pricing  supplement)  relating  to any  series  of notes  being
offered,  the initial  offering price,  the aggregate  principal  amount and the
following terms of the notes:

         o        the title of the notes;

         o        any limit on the  aggregate  principal  amount of the notes of
                  the series;

         o        the person to whom interest on the notes of the series will be
                  payable if other than the registered holder;


                                       -5-

<PAGE>


         o        the date or dates  on which we will pay the  principal  on the
                  notes of the series;

         o        the rate or rates (which may be fixed or  variable)  per annum
                  (or the method used to  determine  the rate or rates) at which
                  the notes of the series will bear interest,  the date or dates
                  from which  interest  will accrue,  the date or dates on which
                  interest will  commence and be payable and any regular  record
                  date for the interest payable on any interest payment date (or
                  the method for establishing such date or dates);

         o        the place or places where  principal of (and premium,  if any)
                  and interest on the notes of the series will be payable;

         o        the terms and conditions upon which we may redeem the notes of
                  the series;

         o        any  obligation we have to redeem or purchase the notes of the
                  series pursuant to any sinking fund or analogous provisions or
                  at the option of a holder of the notes of the series;

         o        the  dates on which  and the  price or prices at which we will
                  repurchase notes of the series at the option of the holders of
                  notes of the series and other detailed terms and provisions of
                  these repurchase obligations;

         o        the  denominations  in which the notes of the  series  will be
                  issued, if other than denominations of $1,000 and any integral
                  multiple thereof;

         o        the  portion  of  principal  amount of the notes of the series
                  payable upon declaration of acceleration of the maturity date,
                  if other than the principal amount;

         o        the currency of denomination of the notes of the series;

         o        if payments of principal of (and premium,  if any) or interest
                  on the notes of the series are to be payable,  at our election
                  or a holder's election,  in one or more currencies or currency
                  units  other  than  that or those in  which  the  notes of the
                  series are  denominated,  the period or periods  within which,
                  and the terms and conditions  upon which,  the election may be
                  made;

         o        the manner in which the  amounts of  payment of  principal  of
                  (and  premium,  if any) or interest on the notes of the series
                  will be  determined,  if these  amounts may be  determined  by
                  reference to an index;

         o        the manner in which a temporary  global note  representing all
                  the  notes  of the  series  will be  issued  and  subsequently
                  exchanged for definitive notes of the series;

         o        whether  the notes of the series will be issued in the form of
                  certificated note securities or global note securities; and


                                       -6-

<PAGE>



         o        any other terms of the notes of the series which terms may not
                  be inconsistent  with,  modify or delete any provisions of the
                  indenture. (Sections 301 and 901)

         We may issue notes that  provide  for an amount less than their  stated
principal amount to be due and payable upon declaration of acceleration of their
maturity  pursuant  to the  terms of the  indenture.  We will  provide  you with
information  on  the  federal  income  tax   considerations  and  other  special
considerations  applicable  to any of these notes in the  applicable  prospectus
supplement.

         If we  denominate  the purchase  price of any of the notes in a foreign
currency or currencies or a foreign  currency unit or units, or if the principal
of (and  premium,  if any) and  interest  on any series of notes is payable in a
foreign  currency or  currencies or a foreign  currency  unit or units,  we will
provide  you  with  information  on the  restrictions,  elections,  general  tax
considerations,  specific terms and other information with respect to that issue
of notes and such foreign  currency or  currencies  or foreign  currency unit or
units in the applicable prospectus supplement.

         Unless otherwise indicated in the prospectus supplement, the notes will
be issued in fully registered form, without coupons,  in denominations of $1,000
or any  multiple  of  $1,000.  At any time and from time to time we may  deliver
executed notes to the trustee for authentication  and, subject to the conditions
set forth in the  indenture,  the trustee  shall  authenticate  and deliver such
notes as  provided  in the  indenture.  No note shall be entitled to any benefit
under the  indenture  or be valid or  obligatory  for any purpose  unless  there
appears on such note a certificate of  authentication  substantially in the form
provided  for in the  indenture.  All  notes  will be  dated  the  date of their
authentication. (Sections 301 and 303)

         Unless otherwise indicated in the prospectus  supplement,  principal of
(and  premium,  if any) and  interest  on the notes will be payable at an office
maintained  by the trustee for such purpose in New York,  New York and the notes
will be exchangeable and transfers thereof will be registerable at the principal
corporate trust office of the trustee in Milwaukee, Wisconsin, provided that, at
our option,  payment of interest  may be made by check  mailed to the address of
the person entitled  thereto as it appears in the note register.  (Sections 202,
305 and 1002)

         Notes may be exchanged for an equal aggregate principal amount of notes
of other authorized  denominations without service charge, except for any tax or
other  governmental  charge that may be imposed.  (Section 305) Interest on each
note (with limited  exceptions as provided in the indenture) will be paid to the
person in whose name such note is  registered  at the close of  business  on the
applicable  record date  specified in the note.  (Section  307) The notes of any
series,  if so specified with respect to a particular  series,  may be issued in
permanent global form.

         The notes will be unsecured  and  unsubordinated  obligations  and will
rank as to  priority  of payment  equally  with all of our other  unsecured  and
unsubordinated indebtedness.  Substantially all of our properties and franchises
are subject to the lien of an Indenture of Mortgage and Deed of Trust,  dated as
of  November  1, 1950 (the  "First  Mortgage  Indenture"),  between us and Chase
Manhattan  Trust Company and Theodore  Kravits,  as trustees.  As of the date of
this prospectus, one series of first mortgage bonds (the "First Mortgage Bonds")
is outstanding under the First Mortgage  Indenture.  The final principal payment
on the  outstanding  series of First Mortgage Bonds is due on February 15, 1999.
We anticipate terminating the First Mortgage Indenture and

                                       -7-

<PAGE>


obtaining a release of the lien against our properties and franchises as soon as
practicable  after the  repayment  at  maturity of the First  Mortgage  Bonds on
February 15, 1999.

         The notes may be sold at a  substantial  discount  below  their  stated
principal amount, bearing no interest or interest at a rate which at the time of
issuance is below market rates.  Certain  federal  income tax  consequences  and
special  considerations  applicable  to any such notes will be  described in the
applicable prospectus supplement. (Section 101)

Permanent Global Notes

         If any notes of a series are  issuable in permanent  global  form,  the
applicable prospectus supplement will describe the circumstances,  if any, under
which  beneficial  owners of  interests  in any such  permanent  global note may
exchange such interests for notes of such series.  Principal of (and premium, if
any) and  interest  on a  permanent  global  note will be  payable in the manner
described in the prospectus  supplement  relating to such global note.  (Section
203)

Restrictive Covenants

         The indenture  does not limit the amount of unsecured  debt that we can
incur.  The  indenture  also does not  expressly  address the effect of a highly
leveraged transaction, however structured, on the holders of notes. As discussed
below,  however,  the  limitations  on our  ability  to create  liens,  to issue
additional   First   Mortgage  Bonds  and  to  enter  into  sale  and  leaseback
transactions provide some protection to note holders in such an event.

         Limitations  on  Liens.  So  long as the  notes  of any  series  remain
outstanding,  we will not,  and will not permit any  subsidiary  to,  create any
mortgage  on,  pledge of, or other lien on or security  interest  in, any of our
properties or assets to secure any indebtedness,  unless we also make all of the
notes of that series equally and ratably secured, except for the following:

         o        the First  Mortgage  Indenture  securing  the  First  Mortgage
                  Bonds;

         o        mortgages on property  existing at the time of  acquisition or
                  construction  of such  property  (or  created  within one year
                  after completion of such acquisition or construction), whether
                  by purchase,  merger,  construction  or  otherwise  (or on the
                  property of a subsidiary at the date it became a  subsidiary),
                  or to secure the  payment  of all or any part of the  purchase
                  price or  construction  cost of such  property,  including the
                  extension  of  any  such   mortgages  to  repairs,   renewals,
                  replacements,  substitutions,  additions and improvements made
                  on such property;

         o        any  extensions,   renewals  or  replacements  (or  successive
                  extensions, renewals or replacements), in whole or in part, of
                  mortgages otherwise permitted by the indenture;

         o        the pledge of any bonds or other securities at any time issued
                  under  any  of  the  mortgages   otherwise  permitted  by  the
                  indenture; or

         o        certain permitted  encumbrances under the indenture.  (Section
                  1004)

                                       -8-

<PAGE>


         Permitted  encumbrances  under the indenture  include (a) the pledge or
assignment  in the  ordinary  course  of  business  of gas  inventory,  accounts
receivable or customers'  installment  paper, and (b) encumbrances not otherwise
permitted  if  the  aggregate  of  all  of  our  obligations   secured  by  such
encumbrances, together with the aggregate net proceeds received by us in respect
of certain  outstanding  sale and  leaseback  transactions  permitted  under the
indenture,  does not exceed 10% of our consolidated tangible net worth. (Section
101)

         Limitation on First Mortgage  Bonds. So long as any notes of any series
remain outstanding,  we will not issue any additional First Mortgage Bonds under
the First Mortgage  Indenture,  except in connection with transfers,  exchanges,
replacements,  substitutions  or reissues of First  Mortgage Bonds of any series
that are already outstanding. (Section 1006)

         Limitations on Sales and Leasebacks.  So long as there are notes of any
series outstanding,  we will not enter into a sale and leaseback transaction for
a term  (including  renewals)  of more than  three  years  with  respect  to any
principal property acquired or placed into service more than 180 days before the
effective date of such lease arrangement unless:

         o        we  would  be  entitled  to incur  indebtedness  secured  by a
                  mortgage on such  principal  property  in a  principal  amount
                  equal to the net  proceeds we received in respect of such sale
                  and leaseback transaction without equally and ratably securing
                  the notes; or

         o        we  retire,  or cause to be  retired,  within  120 days of the
                  effective date of the sale and leaseback  transaction,  funded
                  debt  which is  senior  to or on  parity  with the notes in an
                  amount equal to the net  proceeds we received  with respect to
                  such sale and leaseback transaction. (Section 1005)

Modification and Waiver

         We and the trustee may modify and amend the indenture  with the consent
of the holders of at least a majority  in  principal  amount of the  outstanding
notes of each series affected by the  modifications or amendments.  However,  we
and the trustee may not make any  modification or amendment  without the consent
of the holders of each affected note then outstanding if that amendment will:

         o        change the fixed  maturity or reduce the  principal  amount of
                  any note;

         o        reduce the rate or change the time of payment of  interest  on
                  any note, or reduce any premium payable upon redemption of any
                  note;

         o        reduce the amount of principal of an original  issue  discount
                  note payable upon acceleration of the maturity of such note;

         o        impair the right to  institute  suit on the note or change any
                  place of payment  where,  or  currency  in which,  the note or
                  interest on the note is payable; or

         o        reduce  the  amount  of debt  securities  whose  holders  must
                  consent to an amendment or waiver. (Section 902)

                                       -9-

<PAGE>


         Except for  certain  specified  provisions,  the  holders of at least a
majority  in  principal  amount of the  outstanding  notes of any  series may on
behalf of the  holders of all notes of that  series  waive our  compliance  with
certain restrictive covenants of the indenture.  (Section 1009) The holders of a
majority  in  principal  amount of the  outstanding  notes of any  series may on
behalf of the  holders of all the notes of such  series  waive any past  default
under the indenture with respect to that series and its  consequences,  except a
default in the payment of the principal of (and premium, if any) or any interest
on any note of that series or in respect of a covenant or provision which cannot
be  modified or amended  without  the consent of the holder of each  outstanding
note of the series affected;  provided,  however, that the holders of a majority
in  principal  amount of the  outstanding  notes of any  series  may  rescind an
acceleration  and its  consequences,  including any related payment default that
resulted from the acceleration. (Section 513)

Consolidation, Merger and Sale of Assets

         We may consolidate  with or merge with or into, or convey,  transfer or
lease all or  substantially  all of our  properties and assets to, any person (a
"successor person") provided:

         o        we are the surviving corporation,  or the successor person (if
                  other than  Wisconsin Gas Company) is a corporation  organized
                  and  validly  existing  under  the laws of any  U.S.  domestic
                  jurisdiction  and  expressly  assumes our  obligations  on the
                  notes and under the indenture;

         o        immediately  after giving effect to the transaction,  no Event
                  of Default, and no event which, after notice or lapse of time,
                  or both, would become an Event of Default, shall have occurred
                  and be continuing under the indenture; and

         o        certain other conditions are met. (Section 801)

Events of Default

         "Event of Default" means with respect to any series of notes any of the
following:

         o        default in the payment of any  interest  upon any note of that
                  series when it becomes due and  payable,  and  continuance  of
                  that default for a period of 30 days;

         o        default in the payment of  principal of (or premium if any on)
                  any note of the series when due and payable;

         o        default in the payment of any sinking  fund payment or similar
                  payment with respect to the notes of that series,  when and as
                  due in respect of any note of that series and  continuance  of
                  such default for a period of 30 days;

         o        default in the  performance or breach of any other covenant or
                  warranty  by us in the  indenture  (other  than a covenant  or
                  warranty that has been  included in the  indenture  solely for
                  the  benefit  of a series of notes  other  than that  series),
                  which default  continues uncured for a period of 90 days after
                  we  receive  written  notice  from the  trustee  or we and the
                  trustee receive written notice

                                      -10-

<PAGE>


                  from the holders of not less than 25% in  principal  amount of
                  the  outstanding  notes  of that  series  as  provided  in the
                  indenture;

         o        certain  events of bankruptcy,  insolvency or  reorganization;
                  and

         o        any other Event of Default  provided  with respect to notes of
                  that series. (Section 501)

         No Event of  Default  with  respect  to a  particular  series  of notes
(except  as to  certain  events of  bankruptcy,  insolvency  or  reorganization)
necessarily  constitutes an Event of Default with respect to any other series of
notes.  The occurrence of an Event of Default may constitute an event of default
under our bank credit  agreements  in existence  from time to time. In addition,
the  occurrence  of  certain  Events of  Default  or an  acceleration  under the
indenture  may  constitute  an event  of  default  under  certain  of our  other
indebtedness outstanding from time to time.

         If an Event of Default  with respect to notes of any series at the time
outstanding occurs and is continuing (except as to certain events of bankruptcy,
insolvency or reorganization),  then the trustee or the holders of not less than
25% in principal amount of the outstanding notes of that series may, by a notice
in writing to us (and to the trustee if given by the holders), declare to be due
and  payable  immediately  the  principal  (or,  if the notes of that series are
original issue discount  notes,  that portion of the principal  amount as may be
specified  in the terms of that series) of and accrued and unpaid  interest,  if
any, on all notes of that series.  In the case of an Event of Default  resulting
from certain events of bankruptcy,  insolvency or reorganization,  the principal
(or such specified  amount) of and accrued and unpaid  interest,  if any, on all
outstanding  notes will become and be  immediately  due and payable  without any
declaration or other act on the part of the trustee or any holder of outstanding
notes. At any time after a declaration of acceleration  with respect to notes of
any  series has been made,  but before a judgment  or decree for  payment of the
money due has been  obtained  by the  trustee,  the  holders  of a  majority  in
principal  amount of the outstanding  notes of that series may rescind and annul
the  acceleration  if all  Events of  Default,  other  than the  non-payment  of
accelerated  principal  and  interest,  if any,  with  respect  to notes of that
series,  have been cured or waived as provided in the  indenture.  (Section 502)
For  information  as to waiver of defaults  see the  discussion  set forth under
"--Modification and Waiver." We refer you to the prospectus  supplement relating
to any series of notes that are original issue discount notes for the particular
provisions relating to acceleration of a portion of the principal amount of such
original issue discount notes upon the occurrence of an Event of Default.

         The indenture  provides that the trustee will be under no obligation to
exercise any of its rights or powers  under the  indenture at the request of any
holder of outstanding notes, unless the trustee receives indemnity  satisfactory
to it against any loss,  liability or expense.  (Section 603) Subject to certain
rights of the  trustee,  the  holders of a majority in  principal  amount of the
outstanding  debt  securities  of any  series  will have the right to direct the
time,  method and place of conducting any proceeding for any remedy available to
the trustee or  exercising  any trust or power  conferred  on the  trustee  with
respect to the debt securities of that series. (Section 512)

         No holder of any note of any  series  will have any right to  institute
any proceeding,  judicial or otherwise, with respect to the indenture or for the
appointment  of a receiver or trustee,  or for any remedy  under the  indenture,
unless:


                                      -11-

<PAGE>


         o        that holder has previously given to the trustee written notice
                  of a continuing Event of Default with respect to notes of that
                  series; and

         o        the holders of at least a majority in principal  amount of the
                  outstanding  debt  securities of that series have made written
                  request and offered  reasonable  indemnity,  to the trustee to
                  institute the  proceeding as trustee,  and the trustee has not
                  received  from the  holders of not less than 25% in  principal
                  amount of the  outstanding  notes of that  series a  direction
                  inconsistent with that request and has failed to institute the
                  proceeding within 90 days. (Section 507)

         Notwithstanding  the  foregoing,  the  holder  of any note will have an
absolute and unconditional right to receive payment of the principal of, premium
and any  interest on that note on or after the due dates  expressed in that note
and to institute suit for the enforcement of payment. (Section 507)

         The indenture  requires us, within 120 days after the end of our fiscal
year, to furnish to the trustee a statement as to compliance with the indenture.
(Section  1007) The indenture  provides that the trustee may withhold  notice to
the holders of notes of any series of any Event of Default (except in payment on
any notes of that  series)  with  respect to notes of that  series if it in good
faith  determines that  withholding  notice is in the interest of the holders of
those notes. (Section 602)

Concerning the Trustee

         It is expected  that the trustee  will act as paying agent with respect
to the notes. We have a borrowing arrangement with the trustee.

Defeasance of Notes and Certain Covenants in Certain Circumstances

         Legal  Defeasance.   The  indenture  provides  that,  unless  otherwise
provided by the terms of the  applicable  series of notes,  we may be discharged
from any and all  obligations  in respect of the notes of any series (except for
certain  obligations  to  register  the  transfer  or  exchange of notes of such
series,  to replace  stolen,  lost or  mutilated  notes of such  series,  and to
maintain  paying  agencies and certain  provisions  relating to the treatment of
funds held by paying agents). We will be so discharged upon the deposit with the
trustee, in trust, of money and/or U.S. Government Obligations that, through the
payment of interest and principal in accordance  with their terms,  will provide
money in an amount sufficient in the opinion of a nationally  recognized firm of
independent  public  accountants  to  pay  and  discharge  each  installment  of
principal of (and  premium,  if any) and interest on and any  mandatory  sinking
fund  payments  in respect of the notes of the series on the stated  maturity of
those payments in accordance with the terms of the indenture and those notes.

         This discharge may occur only if, among other things, we have delivered
to the trustee an opinion of counsel  stating  that we have  received  from,  or
there has been published by, the United States Internal Revenue Service a ruling
or, since the date of execution of the indenture, there has been a change in the
applicable  United States  federal  income tax law, in either case to the effect
that,  and based thereon such opinion  shall  confirm  that,  the holders of the
notes of that series will not recognize  income,  gain or loss for United States
federal income tax purposes as a result of the deposit, defeasance and discharge
and will be subject to United States federal income tax on the same

                                      -12-

<PAGE>


amounts and in the same manner and at the same times as would have been the case
if the deposit, defeasance and discharge had not occurred. (Section 401)

         Defeasance of Certain  Covenants.  The indenture  provides that, unless
otherwise  provided  by the  terms  of the  applicable  series  of  notes,  upon
compliance with certain conditions:

         o        we may omit to comply with the covenants  described  under the
                  heading "Restrictive  Covenants,"  "Consolidation,  Merger and
                  Sale of Assets" and certain  other  covenants set forth in the
                  indenture,  as well as any additional  covenants  which may be
                  set forth in the applicable prospectus supplement; and

         o        any  omission  to  comply  with  those   covenants   will  not
                  constitute  an Event of Default  with  respect to the notes of
                  that series ("covenant defeasance").

The conditions include:

         o        depositing  with the  trustee  money  and/or  U.S.  Government
                  Obligations   that,   through  the  payment  of  interest  and
                  principal in accordance  with their terms,  will provide money
                  in  an  amount  sufficient  in  the  opinion  of a  nationally
                  recognized  firm of  independent  public  accounts  to pay and
                  discharge each  installment  of principal of (and premium,  if
                  any) and interest on and any  mandatory  sinking fund payments
                  in respect of the notes of that series on the stated  maturity
                  of  those  payments  in  accordance  with  the  terms  of  the
                  indenture and those notes; and

         o        no Event of Default or event  which with  notice or passage of
                  time  would  become  an  Event of  Default  has  occurred  and
                  continues. (Section 402)

         Covenant Defeasance and Events of Default. In the event we exercise our
option to effect covenant defeasance with respect to any series of notes and the
notes of that series are declared due and payable  because of the  occurrence of
any Event of Default, the amount of money and/or U.S. Government  Obligations on
deposit with the trustee will be  sufficient  to pay amounts due on the notes of
that series at the time of their stated  maturity but may not be  sufficient  to
pay  amounts  due on the notes of that  series  at the time of the  acceleration
resulting from the Event of Default.  However,  we shall remain liable for those
payments.

         The  applicable   prospectus   supplement  may  further   describe  the
provisions,  if any,  permitting  or  restricting  such  defeasance  or covenant
defeasance with respect to the notes of a particular series.

         Federal Income Tax Consequences.  Under current Federal income tax law,
the  deposit  and  defeasance  described  above  under  "Defeasance  of  Certain
Covenants"  will  not  result  in a  taxable  event  to any  holder  of notes or
otherwise  affect the federal  income tax  consequences  of an investment in the
notes of any series.

         The federal income tax treatment of the deposit and discharge described
above under "Legal  Defeasance"  is not clear.  A deposit and  discharge  may be
treated as a taxable  exchange  of such notes for  beneficial  interests  in the
trust consisting of the deposited money or securities. In that

                                      -13-

<PAGE>


event,  a holder of notes may be required to recognize gain or loss equal to the
difference between the holder's adjusted basis for the notes and the fair market
value of the holder's beneficial interest in such trust. Thereafter, such holder
may be required to include in income a share of the income, gain and loss of the
trust.  As  described  above,  it is generally a condition to such a deposit and
discharge  to  obtain  an  opinion  of tax  counsel,  or our  receipt  from,  or
publication  of a ruling by, the Internal  Revenue  Service,  to the effect that
such deposit and  discharge  will not alter the holders' tax  consequences  that
would  have  been  applicable  in the  absence  of the  deposit  and  discharge.
Purchasers  of the notes should  consult  their own advisors with respect to the
tax  consequences  to  them  of  such  deposit  and  discharge,   including  the
applicability and effect of tax laws other than federal income tax law.

                              PLAN OF DISTRIBUTION

         We may,  from time to time,  sell  notes (1)  through  underwriters  or
dealers,  (2)  directly  to one or more  purchasers,  or (3) through  agents.  A
prospectus  supplement  will set forth the terms of the  offering  of the notes,
including  the name or  names of any  underwriters,  the  purchase  price of the
notes, our proceeds from the sale, any  underwriting  discounts and commissions,
any initial  public  offering  price,  any discounts or  concessions  allowed or
reallowed or paid to dealers, and any securities exchange or market on which the
notes may be listed.  Only underwriters named in such prospectus  supplement are
deemed to be underwriters in connection with the offering of such notes.

         If underwriters are used in the sale, the notes will be acquired by the
underwriters for their own account and may be resold from time to time in one or
more transactions, including negotiated transactions, at a fixed public offering
price or at varying prices  determined at the time of sale.  The  obligations of
the  underwriters  to purchase  the notes will be subject to certain  conditions
precedent,  and the underwriters  will be obligated to purchase all the notes of
the  series  offered  by the  prospectus  supplement  if any  of the  notes  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.

         We may also sell notes  directly or through  agents we  designate  from
time to time. Any agent involved in the offering and sale of notes in respect of
which this prospectus is delivered will be named,  and any commissions we pay to
such agent will be set  forth,  in the  related  prospectus  supplement.  Unless
otherwise indicated in the related prospectus supplement, any such agent will be
acting on a reasonable efforts basis for the period of its appointment.

         If a dealer is utilized in the sale of the notes, the Company will sell
such notes to the dealer, as principal. The dealer may then resell such notes to
the  public at varying  prices to be  determined  by such  dealer at the time of
resale.  Dealers  may be  entitled to  indemnification  by the  Company  against
certain liabilities,  including liabilities under the Securities Act, and may be
customers of, engage in transactions  with, or perform  services for the Company
in the ordinary course of business.

         The place and time of  delivery  for the notes in respect of which this
Prospectus is delivered are set forth in the accompanying prospectus supplement.

                                      -14-

<PAGE>



                                  LEGAL MATTERS

         Foley & Lardner of  Milwaukee,  Wisconsin  will issue an opinion  about
certain legal matters with respect to the notes for us. Any underwriters will be
advised  about the other  issues  relating  to any  offering  by their own legal
counsel.  Jere D.  McGaffey,  a partner  of Foley & Lardner,  is a  director  of
Wisconsin Gas Company and its parent WICOR, Inc.. As of December 10, 1998, Foley
& Lardner  attorneys who  participated  in the  preparation of this  prospectus,
including  Mr.  McGaffey,  beneficially  owned an  aggregate  of 6,747 shares of
WICOR, Inc. common stock.

                                     EXPERTS

         The  financial  statements  included in our Annual Report on Form 10-K,
for the  year  ended  December  31,  1997,  incorporated  by  reference  in this
prospectus  and in the  registration  statement,  have  been  audited  by Arthur
Andersen LLP, independent public accountants,  as indicated in their report with
respect to said financial statements,  and are incorporated by reference in this
prospectus  in reliance  upon the  authority of said firm as experts in auditing
and accounting in giving said reports.

                                      -15-

<PAGE>


                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS



Item 14. Other Expenses of Issuance and Distribution.

         The expenses in connection  with the issuance and  distribution  of the
securities  covered hereby,  other than underwriting  discounts and commissions,
are, subject to future contingencies, estimated to be as follows:

                       Securities and Exchange Commission
                          Filing Fee .......................  $  13,900
                       Public Service Commission of
                          Wisconsin ........................      1,000
                       Legal Fees and Expenses..............     50,000
                       Blue Sky Fees and Expenses...........      5,000
                       Accounting Fees and Expenses.........     12,000
                       Printing Expenses....................      5,000
                       Trustee Fees and Expenses............      4,000
                       Rating Agencies' Fees................     25,000
                       Miscellaneous .......................      9,100
                                                               --------

                                    Total...................   $125,000
                                                               ========

Item 15. Indemnification of Directors and Officers.

         Pursuant to the provisions of the Wisconsin  Business  Corporation  Law
and the  Registrant's  By-Laws,  directors  and officers of the  Registrant  are
entitled  to  mandatory  indemnification  from the  Registrant  against  certain
liabilities (which may include liabilities under the Securities Act of 1933) and
expenses (i) to the extent such  officers or  directors  are  successful  in the
defense  of a  proceeding;  and (ii) in  proceedings  in which the  director  or
officer is not successful in defense  thereof,  unless it is determined that the
director  or  officer  breached  or failed to  perform  his or her duties to the
Registrant and such breach or failure constituted: (a) a willful failure to deal
fairly with the Registrant or its  shareholders  in connection  with a matter in
which the  director  or  officer  had a material  conflict  of  interest;  (b) a
violation  of the  criminal  law unless the  director or officer had  reasonable
cause to believe  his or her conduct  was lawful or had no  reasonable  cause to
believe  his or her  conduct  was  unlawful;  (c) a  transaction  from which the
director  or  officer  derived  an  improper  personal  profit;  or (d)  willful
misconduct.   Additionally,   under  the  Wisconsin  Business  Corporation  Law,
directors  of the  Registrant  are not  subject  to  personal  liability  to the
Registrant,  its  shareholders or any person asserting rights on behalf thereof,
for certain breaches or failures to perform any duty resulting solely from their
status as directors, except in circumstances paralleling those outlined above.

         Expenses for the defense of any action for which indemnification may be
available may be advanced by the Registrant under certain circumstances.


                                      II-1

<PAGE>


         The indemnification  provided by the Wisconsin Business Corporation Law
is not  exclusive  of any other  rights to which a  director  or  officer of the
Registrant may be entitled.  The Registrant also maintains a liability insurance
policy for its  directors  and officers as permitted by Wisconsin  law which may
extend to, among other things,  liability  arising under the  Securities  Act of
1933.

         The proposed  form of  Underwriting  Agreement  for the Notes  contains
provisions  under which the  Underwriters  agree to indemnify  the directors and
officers of the Registrant against certain  liabilities,  including  liabilities
under the Securities Act of 1933.

Item 16. Exhibits.

         The exhibits filed  herewith or  incorporated  by reference  herein are
specified on the Exhibit Index included herein.

Item 17. Undertakings.

(a)      The undersigned Registrant hereby undertakes:

         (1)      To file,  during any period in which offers or sales are being
                  made,  a   post-effective   amendment  to  this   Registration
                  Statement:

                  (i)      To  include  any   prospectus   required  by  Section
                           10(a)(3) of the Securities Act of 1933;

                  (ii)     To  reflect  in the  prospectus  any  facts or events
                           arising after the effective date of the  Registration
                           Statement   (or  the   most   recent   post-effective
                           amendment  thereof)  which,  individually  or in  the
                           aggregate,  represent  a  fundamental  change  in the
                           information set forth in the Registration  Statement.
                           Notwithstanding   the  foregoing,   any  increase  or
                           decrease  in volume  of  securities  offered  (if the
                           total dollar value of  securities  offered  would not
                           exceed that which was  registered)  and any deviation
                           from  the low or high  end of the  estimated  maximum
                           offering  range  may  be  reflected  in the  form  of
                           prospectus filed with the Commission pursuant to Rule
                           424(b) if, in the  aggregate,  the  changes in volume
                           and price  represent no more than a 20% change in the
                           maximum  aggregate  offering  price  set forth in the
                           "Calculation  of  Registration   Fee"  table  in  the
                           effective Registration Statement; and

                  (iii)    To include any material  information  with respect to
                           the plan of distribution not previously  disclosed in
                           the Registration  Statement or any material change to
                           such information in the Registration Statement;

provided,  however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
information  required  to be  included in a  post-effective  amendment  by those
paragraphs is contained in periodic reports filed

                                      II-2

<PAGE>


by the  Registrant  pursuant  to Section 13 or Section  15(d) of the  Securities
Exchange Act of 1934 that are  incorporated  by  reference  in the  Registration
Statement.

         (2)      That, for the purpose of determining  any liability  under the
                  Securities  Act of 1933,  each such  post-effective  amendment
                  shall be deemed to be a new Registration Statement relating to
                  the securities offered therein, and the offering of securities
                  at that  time  shall be  deemed  to be the  initial  bona fide
                  offering thereof.

         (3)      To  remove  from  registration  by means  of a  post-effective
                  amendment any of the securities  being registered which remain
                  unsold at the termination of the offering.

(b)      The  undersigned  Registrant  hereby  undertakes  that, for purposes of
         determining any liability under the Securities Act of 1933, each filing
         of the Registrant's  annual report pursuant to Section 13(a) or Section
         15(d) of the Securities  Exchange Act of 1934 that is  incorporated  by
         reference  in the  Registration  Statement  shall be deemed to be a new
         Registration  Statement relating to the securities offered therein, and
         the offering of such  securities at that time shall be deemed to be the
         initial bona fide offering thereof.


(c)      The undersigned Registrant hereby undertakes that:

         (1)      For purposes of determining any liability under the Securities
                  Act  of  1933,  the  information  omitted  from  the  form  of
                  prospectus  filed as part of this  Registration  Statement  in
                  reliance  upon Rule 430A and contained in a form of prospectus
                  filed by the  Registrant  pursuant to Rule 424(b)(1) or (4) or
                  497(h) under the  Securities Act shall be deemed to be part of
                  this  Registration  Statement  as of the time it was  declared
                  effective.

         (2)      For  the  purpose  of  determining  any  liability  under  the
                  Securities  Act of 1933,  each  post-effective  amendment that
                  contains  a form of  prospectus  shall be  deemed  to be a new
                  registration  statement  relating  to the  securities  offered
                  therein,  and the  offering  of such  securities  at that time
                  shall be deemed to be the initial bona fide offering thereof.

(d)      Insofar as indemnification for liabilities arising under the Securities
         Act of 1933 may be permitted  to  directors,  officers and  controlling
         persons of the Registrant  pursuant to the provisions set forth in Item
         15 hereof,  or otherwise,  the  Registrant has been advised that in the
         opinion of the Securities and Exchange Commission such  indemnification
         is against  public  policy as expressed  in the Act and is,  therefore,
         unenforceable.  In the event that a claim for  indemnification  against
         such liabilities  (other than the payment by the Registrant of expenses
         incurred or paid by a director,  officer or  controlling  person of the
         Registrant in the successful defense of any action, suit or proceeding)
         is  asserted  by  such  director,  officer  or  controlling  person  in
         connection with the securities being  registered,  the Registrant will,
         unless in the  opinion of its  counsel  the matter has been  settled by
         controlling  precedent,  submit to a court of appropriate  jurisdiction
         the  question  whether  such  indemnification  by it is against  public
         policy  as  expressed  in the Act and  will be  governed  by the  final
         adjudication of such issue.

                                      II-3

<PAGE>


                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the  requirements  for filing on Form S-3 and has duly caused this  Amendment
No.  1 to  the  Registration  Statement  to be  signed  on  its  behalf  by  the
undersigned,  thereunto  duly  authorized,  in the City of  Milwaukee,  State of
Wisconsin, on January 8, 1999.

                                 WISCONSIN GAS COMPANY



                                 By:  /s/ Joseph P. Wenzler      
                                      Joseph P. Wenzler
                                      Senior Vice President and Chief Financial
                                      Officer

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Amendment No. 1 to the  Registration  Statement has been signed below as of this
8th day of January, 1999 by the following persons in the capacities indicated.

           Signature                                     Title



Bronson J. Haase*                                President and Chief Executive
                                                 Officer
                                                 (Principal Executive Officer)

/s/ Joseph P. Wenzler                            Senior Vice President and Chief
Joseph P. Wenzler                                Financial Officer (Principal
                                                 Financial Officer and Principal
                                                 Accounting Officer)

Wendell F. Bueche*                                      Director



Willie D. Davis*                                        Director



Jere D. McGaffey*                                       Director



Daniel F. McKeithan, Jr.*                               Director



                                      II-4

<PAGE>







Guy A. Osborn*                                          Director



Thomas F. Schrader*                                     Director



Stuart W. Tisdale*                                      Director



George E. Wardeberg*                                    Director



Essie M. Whitelaw*                                      Director



William B. Winter*                                      Director


By /s/ Joseph P. Wenzler            
   Joseph P. Wenzler
   Attorney-in-Fact


         Pursuant to  Transaction  Requirement  B.2 of Form S-3, the  Registrant
reasonably  believes that the security  rating to be assigned to the  securities
registered  hereunder will make the  securities  "investment  grade  securities"
prior to sale.

                                      II-5
<PAGE>


                                  EXHIBIT INDEX


                                     Exhibit

(1)        Form of Underwriting Agreement for the Notes.

(4.1)      Indenture  of  Mortgage  and Deed of Trust,  dated as of  November 1,
           1950, between Wisconsin Gas Company, successor to Milwaukee Gas Light
           Company, and Chase Manhattan Trust Company, N.A., successor to Mellon
           National Bank and Trust Company, and Theodore Kravis, successor to D.
           A. Hazlett, Trustees (incorporated by reference to Exhibit 7-E to the
           Company's Registration Statement (No. 2-8631)).

(4.2)      Eleventh  Supplemental  Indenture,  dated as of  February  15,  1982,
           between  Wisconsin  Gas Company and Chase  Manhattan  Trust  Company,
           N.A.,  successor  to Mellon  Bank,  N.A.,  and N. R. Smith,  Trustees
           (incorporated   by  reference   to  Exhibit  4.5  to  the   Company's
           Registration Statement on Form S- 3 (No. 33-43729)).

(4.3)      Bond Purchase  Agreement,  dated December 31, 1981, between Wisconsin
           Gas Company and Teachers Insurance and Annuity Association of America
           relating to the issuance and sale of $30 million  principal amount of
           First Mortgage Bonds,  Adjustable Rate Series due 2002  (incorporated
           by reference to Exhibit 4.6 to the Company's  Registration  Statement
           on Form S-3 (No.
           33-43729)).

(4.4)      Indenture,  dated as of  September  1, 1990,  between  Wisconsin  Gas
           Company  and  Firstar  Bank  Milwaukee,   N.A.,  successor  to  First
           Wisconsin  Trust  Company,  Trustee  (incorporated  by  reference  to
           Exhibit 4.11 to the Company's Registration Statement on Form S-3 (No.
           33-36639)).

(4.5)      Officers' Certificate,  dated as of September 15, 1993, setting forth
           the terms of the Company's 6.60% Debentures due 2013 (incorporated by
           reference to Exhibit 4.1 to the Company's  Current Report on Form 8-K
           dated September 15, 1993).

(4.6)      Officers'  Certificate,  dated as of November 7, 1995,  setting forth
           the terms of the  Company's  6 3/8% Notes due 2005  (incorporated  by
           reference to Exhibit 4.1 to the Company's  Current Report on Form 8-K
           dated November 7, 1995).

(4.7)      Revolving  Credit  Agreement,  dated  as of  August  6,  1997,  among
           Wisconsin  Gas Company and  Citibank,  N.A.,  as Agent,  Firstar Bank
           Milwaukee,  N.A.,  Harris  Trust & Savings  Bank and M&I  Marshall  &
           Ilsley  Bank  (incorporated  by  reference  to  Exhibit  4.1  to  the
           Company's  Quarterly  Report  on  Form  10- Q for the  quarter  ended
           September 30, 1997).

(5)        Opinion of Foley & Lardner.*

(12)       Statement re:  computation of ratios.*

(23.1)     Consent of Arthur Andersen LLP.



<PAGE>




(23.2)     Consent of Foley & Lardner (included in Exhibit 5).*

(24)       Powers of Attorney relating to subsequent amendments (included on the
           signature page to the Registration Statement).*

(25)       Form T-1 Statement of Eligibility and  Qualification  under the Trust
           Indenture Act of 1939 of Firstar Bank Milwaukee, N.A.*

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

*         Previously filed.

























                                                                 Draft of 1/7/98









                                   $50,000,000


                              WISCONSIN GAS COMPANY

                               __% Notes Due 2009







                             UNDERWRITING AGREEMENT


















                                                                January __, 1999




                                      
<PAGE>
                                                                January __, 1999





Morgan Stanley & Co. Incorporated
Robert W. Baird & Co. Incorporated
A.G. Edwards & Sons, Inc.
c/o Morgan Stanley & Co. Incorporated
    1585 Broadway
    New York, New York  10036

Dear Sirs and Mesdames:

         Wisconsin  Gas  Company,  a  Wisconsin   corporation  (the  "Company"),
proposes  to issue and sell to the  several  Underwriters  named in  Schedule  I
hereto (the "Underwriters")  $50,000,000 principal amount of its ____% Notes Due
2009 (the  "Securities") to be issued pursuant to the provisions of an Indenture
dated as of September 1, 1990 (the "Indenture")  between the Company and Firstar
Bank Milwaukee, N.A., as Trustee (the "Trustee").

         The Company has filed with the Securities and Exchange  Commission (the
"Commission") a registration statement, including a prospectus,  relating to the
Securities.  The  registration  statement  as  amended  at the  time  it  became
effective,  including  the  information  (if  any)  deemed  to be  part  of  the
registration  statement at the time of effectiveness pursuant to Rule 430A under
the Securities Act of 1933, as amended (the  "Securities  Act"),  is hereinafter
referred to as the  "Registration  Statement";  the  prospectus,  including  any
supplement  thereto,  in the form first used to confirm  sales of  Securities is
hereinafter referred to as the "Prospectus."

         1.  Representations  and  Warranties.  (A) The Company  represents  and
warrants to and agrees with each of the Underwriters that:

         (a) The  Registration  Statement  has become  effective;  no stop order
suspending the effectiveness of the Registration  Statement is in effect, and no
proceedings for such purpose are pending before or threatened by the Commission.

         (b) (i) Each  document,  if any,  filed or to be filed  pursuant to the
Securities   Exchange  Act  of  1934,  as  amended  (the  "Exchange   Act")  and
incorporated by reference in the Prospectus complied or will or will comply when
so filed in all material respects with the Exchange Act and the applicable rules
and  regulations  of the Commission  thereunder  and the Trust  Indenture Act of
1939, as amended (the "Trust Indenture Act"), (ii) each part of the Registration
Statement,  when such part became effective, did not contain and each such part,
as amended or supplemented, if applicable, will not contain any untrue statement
of a  material  fact or omit to state a  material  fact  required  to be  stated
therein or necessary to make the statements  therein not  misleading,  (iii) the
Registration


                                      - 2 -

<PAGE>


Statement  and the  Prospectus  comply  and,  as  amended  or  supplemented,  if
applicable, will comply in all material respects with the Securities Act and the
applicable  rules and  regulations  of the Commission  thereunder,  and (iv) the
Prospectus does not contain and, as amended or supplemented, if applicable, will
not contain any untrue  statement of a material fact or omit to state a material
fact necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading,  except that the representations and
warranties  set forth in this  Section  1(b) do not apply (A) to  statements  or
omissions in the Registration Statement or the Prospectus based upon information
relating  to any  Underwriter  furnished  to the  Company  in  writing  by  such
Underwriter  through  you  expressly  for use therein or (B) to that part of the
Registration  Statement that constitutes the Statement of Eligibility (Form T-1)
under the Trust Indenture Act of the Trustee.

         (c) The Company is validly  existing as a corporation  in good standing
under the laws of the  jurisdiction of its  incorporation  and has the corporate
power and authority to own its property and to conduct its business as described
in the  Prospectus;  the Company is in possession of and operating in compliance
with all  franchises,  grants,  authorizations,  licenses,  permits,  easements,
consents,  certificates and orders required for the conduct of its business, all
of which are valid and in full force and effect  (except where any failure to do
so would not result in a material adverse change in the condition  (financial or
otherwise), business or results of operations of the Company).

         (d) The Company has no subsidiaries.

         (e) This Agreement has been duly authorized,  executed and delivered by
the Company.

         (f) The Indenture has been duly qualified under the Trust Indenture Act
and has been duly  authorized,  executed  and  delivered by the Company and is a
valid and binding  agreement of the Company,  enforceable in accordance with its
terms  except  as the  enforceability  thereof  may be  limited  by  bankruptcy,
insolvency or similar laws  affecting  creditors'  rights  generally and general
principles of equity and subject to the  qualification  that certain  provisions
thereof may be  unenforceable in whole or in part under the laws of the State of
Wisconsin,  but inclusion of such provisions does not affect the validity of the
Indenture  and  the  Indenture  contains  legally  adequate  provisions  for the
realization of the principal legal right and benefits afforded thereby;  and the
Indenture conforms,  in all material respects, to the description thereof in the
Prospectus.

         (g) The  Securities  have been duly  authorized  and, when executed and
authenticated  in accordance  with the provisions of the Indenture and delivered
to and  paid  for by the  Underwriters  in  accordance  with  the  terms of this
Agreement,  will be entitled to the benefits of the  Indenture and will be valid
and binding  obligations of the Company,  enforceable  in accordance  with their
terms  except  as the  enforceability  thereof  may be  limited  by  bankruptcy,
insolvency or similar laws  affecting  creditors'  rights  generally and general
principles of equity and subject to the  qualification  that certain  provisions
thereof may be  unenforceable  in whole or in part under he laws of the State of
Wisconsin,  but inclusion of such provisions does not affect the validity of the
Securities  and the  Securities  contain  legally  adequate  provisions  for the
realization of the principal legal rights and benefits afforded thereby; and the
Securities will conform, at the time of their issuance, in all material respects
with the description thereof in the Prospectus.


                                      - 3 -

<PAGE>


         (h)  The  Company  is not in  violation  of its  Restated  Articles  of
Incorporation  or in default in the  performance  or  observance of any material
obligation, agreement, covenant or condition contained in any statute, contract,
indenture,  mortgage,  deed of  trust,  loan  agreement,  note,  lease  or other
material  agreement or  instrument  to which it is a party or by which it or its
property may be bound, which violations or defaults would individually or in the
aggregate  result in a material  adverse  change in the condition  (financial or
otherwise),  business  or results of  operations  of the  Company;  no  consent,
approval,  authorization  or order of any  court or  governmental  authority  or
agency  is  required  in  connection  with  the  sale of the  Securities  to the
Underwriters,  except such as may be required under the Securities Act and state
securities  laws;  and the  execution  and  delivery of this  Agreement  and the
consummation  of the  transactions  contemplated  herein  and  therein  will not
conflict  with or  constitute  a breach of, or default  under,  or result in the
creation or imposition of any lien,  charge or encumbrance  upon any property or
assets of the Company  pursuant  to, any  contract,  indenture,  mortgage,  loan
agreement,  note,  lease or other  instrument known to such counsel to which the
Company is a party or by which it is bound,  nor will such action  result in any
violation of the  provisions  of the charter or by-laws of the  Company,  or any
law, administrative regulation, or administrative or court decree known to them,
other than in each case  (except  with respect to the charter and by-laws of the
Company to which this qualification shall not apply) such breaches,  defaults or
violations which individually or in the aggregate would not result in a material
adverse change in the condition (financial or otherwise), business or results of
operations of the Company;

         (i) Subsequent to the respective dates as of which information is given
in the  Registration  Statement  and  Prospectus,  and  except  as set  forth or
contemplated   thereby,   the  Company  has  not  incurred  any  liabilities  or
obligations,  direct or contingent, nor entered into any transactions not in the
ordinary  course of business  which in either case are  material to the Company;
there has not occurred any material  adverse change in the condition  (financial
or otherwise),  business or operations of the Company, whether or not arising in
the ordinary  course;  and there has not been any material change in the capital
stock or long-term  debt of the Company,  except for payments  upon maturity [or
the  payment of sinking  fund  obligations  (whether  required  or  pursuant  to
optional provisions)] on outstanding first mortgage bonds];

         (j)  There  are  no  legal  or  governmental   proceedings  pending  or
threatened to which the Company is a party or to which any of the  properties of
the Company is subject that are  required to be  described  in the  Registration
Statement or the  Prospectus and are not so described,  or which,  if determined
adversely to the Company,  the Company reasonably believes would individually or
in the aggregate result in a material adverse change in the condition (financial
or  otherwise),  business or results of operations of the Company or which would
materially  and  adversely   affect  the   consummation   of  the   transactions
contemplated  by this Agreement;  and to the best of the Company's  knowledge no
such  proceedings are threatened or contemplated by governmental  authorities or
threatened by others; and there are no statutes, regulations, contracts or other
documents that are required to be described in the Registration Statement or the
Prospectus or to be filed as exhibits to the Registration Statement that are not
described or filed as required.

         (k)  Each  preliminary  prospectus  filed  as part of the  registration
statement as  originally  filed or as part of any  amendment  thereto,  or filed
pursuant to Rule 424 under the Securities Act,


                                      - 4 -

<PAGE>



complied when so filed in all material  respects with the Securities Act and the
applicable rules and regulations of the Commission thereunder.

         (l) The Company has obtained a certificate of authority from the Public
Service Commission of Wisconsin (the "Wisconsin Commission") with respect to the
Securities  authorizing  the issue and sale of the  Securities by the Company on
the terms set forth or  contemplated  in this Agreement and in the  Registration
Statement;  the Company will make such additional  filings as are required under
said certificate of authority in a timely fashion.

         (m) Other  than  WICOR,  Inc.  and  Citibank,  N.A.,  as trustee of the
Wisconsin Gas Company Employees'  Savings Plan, no person or corporation,  which
is a holding company" or a "subsidiary  company" of a "holding company",  within
the meaning of such terms as defined in the Public Utility  Holding  Company Act
of 1935,  directly or indirectly owns, controls or holds with power to vote, 10%
or more of the  outstanding  voting  securities of the Company;  and each of the
Company and WICOR,  Inc. is presently  exempt from the  provisions of the Public
Utility  Holding  Company  Act  of  1935  which  would  require  it to  register
thereunder.

         (n)  The  Company  is  not  an   "investment   company"  or  an  entity
"controlled"  by an  "investment  company"  as such  terms  are  defined  in the
Investment Company Act of 1940, as amended.

         (B) Any  certificate  signed by an officer of the Company and delivered
to you or counsel for the  Underwriters  at the Closing Time in connection  with
the  offering  of Notes  shall be deemed a  representation  and  warranty of the
Company, as to the matters covered thereby, to each Underwriter participating in
the offering.

         2.  Agreements to Sell and Purchase.  The Company hereby agrees to sell
to the  several  Underwriters,  and  each  Underwriter,  upon  the  basis of the
representations  and warranties herein contained,  but subject to the conditions
hereinafter  stated,  agrees,  severally  and not jointly,  to purchase from the
Company the respective  principal  amounts of Securities set forth in Schedule I
hereto  opposite  its name at  _____% of their  principal  amount  plus  accrued
interest, if any, from January __, 1999 to the date of payment and delivery.

         3.  Terms of Public  Offering.  The  Company is advised by you that the
Underwriters  propose to make a public offering of their respective  portions of
the Securities as soon after the Registration  Statement and this Agreement have
become  effective  as in your  judgment  is  advisable.  The  Company is further
advised by you that the Securities are to be offered to the public  initially at
____% of their  principal  amount (the  "Public  Offering  Price")  plus accrued
interest,  if any, from January __, 1999 to the date of payment and delivery and
to certain  dealers  selected by you at a price that represents a concession not
in excess of ____% of their  principal  amount under the Public  Offering Price,
and that any Underwriter may allow, and such dealers may reallow,  a concession,
not in excess  of ____% of their  principal  amount,  to any  Underwriter  or to
certain other dealers.

         4. Payment and Delivery.  Payment for the  Securities  shall be made by
wire  transfer  payable to the order of the  Company  in Federal or other  funds
immediately available at the office


                                      - 5 -

<PAGE>



Foley & Lardner, 777 East Wisconsin Avenue,  Milwaukee,  Wisconsin 53202-5367 at
10:00 A.M.,  local time, on January __, 1999.  The time and date of such payment
are hereinafter referred to as the "Closing Date."

         Payment for the  Securities  shall be made against  delivery to you for
the  respective  accounts  of the  several  Underwriters  of one or more  global
certificates  representing  the Securities  registered in the name of Cede & Co.
with  any  transfer  taxes  payable  in  connection  with  the  transfer  of the
Securities to the Underwriters duly paid.

         5. Conditions to the Underwriters' Obligations.  The obligations of the
Company to sell the Securities to the Underwriters  and the several  obligations
of the  Underwriters  to purchase and pay for the  Securities are subject to the
condition that the  Registration  Statement  shall have become  effective on the
date hereof.

         In addition, the several obligations of the Underwriters are subject to
the accuracy of the  representations  and  warranties on the part of the Company
herein  contained,  to the accuracy of the statements of the Company's  officers
made in any  certificate  furnished  pursuant to the provisions  hereof,  to the
performance  by  the  Company  of all of its  covenants  and  other  obligations
hereunder and to the following further conditions:

         (a) at the Closing Time

                  (i)  no  stop  order  suspending  the   effectiveness  of  the
         Registration Statement shall have been issued under the Securities Act,
         no order  suspending  trading or striking or withdrawing any Securities
         to be  listed  on a  national  securities  exchange  from  listing  and
         registration  under  the  Exchange  Act  shall  be in  effect,  and  no
         proceedings under the Securities Act or the Exchange Act therefor shall
         have been  initiated or threatened by the  Commission,  (ii) the rating
         assigned   by   any   "nationally    recognized    statistical   rating
         organization",  as such term is defined for purposes of Rule  436(g)(2)
         under the Securities  Act, to any debt  securities,  preferred stock or
         other obligations of the Company as of the date of this Agreement shall
         not have been  lowered  since the  execution of this  Agreement  and no
         notice  indicating  an intended or  potential  downgrading  of any such
         securities shall have been given by any such rating  organization since
         the date of this Agreement, and (iii) there shall not have come to your
         attention any facts that would reasonably cause you to believe that the
         Prospectus  at the time it was  required to be delivered to a purchaser
         of the Securities,  contained an untrue statement of a material fact or
         omitted  to  state a  material  fact  necessary  in  order  to make the
         statements therein, in the light of the circumstances  existing at such
         time, not misleading.

         (b) The Underwriters shall have received on the Closing Date an opinion
of Foley & Lardner,  outside counsel for the Company, dated the Closing Date, in
form and substance satisfactory to you, to the effect that:

                  (i) the Company is validly  existing as a corporation  in good
         standing under the laws of the jurisdiction of its  incorporation,  and
         has the  corporate  power  and  authority  to own its  property  and to
         conduct its business as described in the Prospectus;


                                      - 6 -

<PAGE>


                  (ii) this  Agreement  has been duly  authorized,  executed and
         delivered by the Company;

                  (iii) the  Indenture has been duly  qualified  under the Trust
         Indenture Act and has been duly  authorized,  executed and delivered by
         the  Company  and is a valid  and  binding  agreement  of the  Company,
         enforceable in accordance  with its terms except as the  enforceability
         thereof  may be  limited by  bankruptcy,  insolvency  or  similar  laws
         affecting  creditors'  rights  generally  and by general  principles of
         equity and subject to the qualification that certain provisions thereof
         may be unenforceable in whole or in part under the laws of the State of
         Wisconsin,  but  inclusion  of such  provisions  does  not  affect  the
         validity of the Indenture and the Indenture  contains  legally adequate
         provisions  for the  realization  of the  principal  legal  rights  and
         benefits afforded thereby;

                  (iv) the  Securities  have  been  duly  authorized  and,  when
         executed and  authenticated  in accordance  with the  provisions of the
         Indenture  and  delivered  to  and  paid  for by  the  Underwriters  in
         accordance  with the terms of this  Agreement,  will be entitled to the
         benefits of the Indenture and will be valid and binding  obligations of
         the Company,  enforceable in accordance  with their terms except as the
         enforceability  thereof  may be limited by  bankruptcy,  insolvency  or
         similar  laws  affecting  creditors'  rights  generally  and by general
         principles  of equity and  subject to the  qualification  that  certain
         provisions  thereof may be  unenforceable in whole or in part under the
         laws of the State of Wisconsin,  but inclusion of such  provisions does
         not affect the validity of the Securities  and the  Securities  contain
         legally adequate  provisions for the realization of the principal legal
         rights and benefits afforded thereby;

                  (v) The Indenture and the  Securities  conform in all material
         respects  to  the  descriptions  thereof  in  the  Prospectus  and  the
         applicable Prospectus Supplement;

                  (vi)  The  Registration   Statement  is  effective  under  the
         Securities Act and, to the best of their knowledge and information,  no
         stop order suspending the  effectiveness of the Registration  Statement
         has been  issued  under  the  Securities  Act or  proceedings  therefor
         initiated or threatened by the Commission;

                  (vii)  The  Registration  Statement,  at the  time  it  became
         effective and as of the date of this Agreement, and the Prospectus,  as
         of the date  thereof,  as of the date of this  Agreement  and as of the
         Closing  Date,  (in each case other than the financial  statements  and
         other financial or statistical  information included or incorporated by
         reference therein, as to which no opinion need be rendered) complied as
         to  form  in  all  material  respects  with  the  requirements  of  the
         Securities  Act, the Trust Indenture Act, and the rules and regulations
         thereunder;

                  (viii) Each  document,  if any, filed pursuant to the Exchange
         Act  (other  than the  financial  statements  and  other  financial  or
         statistical  information  included therein, as to which no opinion need
         be rendered) and  incorporated by reference in the Prospectus  complied
         when so filed as to form in all material respects with the Exchange Act
         and the rules and regulations thereunder;


                                      - 7 -

<PAGE>



                  (ix) The Wisconsin  Commission  has  authorized  the issue and
         sale of the  Securities;  such  authorization,  to the  best  of  their
         knowledge,  is still in full force and effect and no stay with  respect
         thereto is pending or in effect and such  authorization  is  sufficient
         for the  issue  and sale of the  Securities;  the issue and sale of the
         Securities as described in the  Prospectus  are in conformity  with the
         terms  of  such   authorization;   and  no  other  consent,   approval,
         authorization or order of any court or governmental authority or agency
         is  required  in  connection  with  the sale of the  Securities  to the
         Underwriters,  except such as may be required  under the Securities Act
         and  state  securities  laws;  and to the best of their  knowledge  and
         information,  the  execution  and  delivery of this  Agreement  and the
         consummation of the transactions  contemplated  herein and therein will
         not  conflict  with or  constitute  a breach of, or default  under,  or
         result in the creation or imposition of any lien, charge or encumbrance
         upon any property or assets of the Company  pursuant to, any  contract,
         indenture,  mortgage,  loan agreement,  note, lease or other instrument
         known to such counsel to which the Company is a party or by which it is
         bound,  nor will such action result in any violation of the  provisions
         of the charter or by-laws of the  Company,  or any law,  administrative
         regulation, or administrative or court decree known to them, other than
         in each case  (except  with  respect to the  charter and by-laws of the
         Company  to which this  qualification  shall ot apply)  such  breaches,
         defaults or violations which individually or in the aggregate would not
         result in a material  adverse  change in the  condition  (financial  or
         otherwise), business or results of operations of the Company;

                  (x) after due inquiry, such counsel does not know of any legal
         or governmental  proceedings pending or threatened to which the Company
         is a party or to which any of the  properties of the Company is subject
         that are required to be described in the Registration  Statement or the
         Prospectus  and are not so described or of any  statutes,  regulations,
         contracts or other  documents  that are required to be described in the
         Registration  Statement or the Prospectus or to be filed as exhibits to
         the Registration Statement that are not described or filed as required;

                  (xi) the statements  (A) in the Prospectus  under the captions
         "Description  of  Notes"  and  "Plan  of  Distribution"  and (B) in the
         Registration  Statement  in Item  15,  in  each  case  insofar  as such
         statements  constitute  summaries  of the legal  matters,  documents or
         proceedings referred to therein,  fairly present the information called
         for with respect to such legal matters,  documents and  proceedings and
         fairly summarize the matters referred to therein;

                  You  shall  also  have  received  from  such  counsel a letter
         advising that nothing has come to such  counsel's  attention that would
         lead such counsel to believe that the  Registration  Statement,  at the
         time  it  became  effective,  or if an  amendment  to the  Registration
         Statement  or an  annual  report  on Form  10-K has  been  filed by the
         Company with the  Commission  subsequent  to the  effectiveness  of the
         Registration   Statement  (other  than  the  financial  statements  and
         supporting schedules and other financial or statistical information set
         forth therein, as to which no advice is given), then at the time of the
         most  recent  such  filing,  and  as of the  date  of  this  Agreement,
         contained any untrue statement of a material fact or omitted to state a
         material  fact  required to be stated  herein or  necessary to make the
         statements


                                      - 8 -

<PAGE>



         therein  not  misleading  or  that  the   Prospectus,   as  amended  or
         supplemented  at the date of this  Agreement  and at the Closing  Time,
         contained or contains an untrue statement of a material fact or omitted
         or omits to state any material  fact  necessary to make the  statements
         therein,  in the light of the circumstances under which they were made,
         not misleading.

                  The opinion of Foley & Lardner described in this paragraph (b)
         shall be rendered to the Underwriters at the request of the Company and
         shall so state therein.

         (c) The Underwriters shall have received on the Closing Date an opinion
of Sidley & Austin,  counsel  for the  Underwriters,  dated  the  Closing  Date,
covering the matters referred to in subparagraphs  (ii), (iii), (iv), and (x) of
paragraph (b) above and in the unnumbered subparagraph in paragraph (b).

         With respect to the  unnumbered  subparagraph  of paragraph  (b) above,
Foley & Lardner and Sidley & Austin may state that their  opinion and belief are
based upon their participation in the preparation of the Registration  Statement
and  Prospectus  and any  amendments  or  supplements  thereto  and  review  and
discussion  of the  contents  thereof,  but are  without  independent  check  or
verification, except as specified.

         (d) At the Closing Time there shall not have been, since the respective
dates  as of which  information  is given  in the  Registration  Statement,  any
material adverse change in the condition, financial or otherwise, of the Company
or in the  earnings,  business  affairs or business  prospects  of the  Company,
whether or not arising in the ordinary course of business,  and the Underwriters
shall have received a certificate of the President and Chief  Executive  Officer
and Chief Financial Officer of the Company, dated as of the Closing Time, to the
effect that there has been no such material  adverse change,  to the effect that
the  representations  and  warranties of the Company  contained in Section 1 are
true and  correct  with the same force and effect as though  made on the Closing
Date, and to the effect that the Company has complied with all of the agreements
and  satisfied  all of the  conditions  on its part to be performed or satisfied
hereunder on or before the Closing Date.

         (e) The  Underwriters  shall have received,  on each of the date hereof
and the Closing Date, a letter dated the date hereof or the Closing Date, as the
case may be, in form and substance satisfactory to the Underwriters, from Arthur
Anderson  LLP,  independent  public  accountants,   containing   statements  and
information of the type ordinarily included in accountants' "comfort letters" to
underwriters  with respect to the  financial  statements  and certain  financial
information contained in the Registration Statement and the Prospectus.

         (f) At the Closing Time,  counsel for the Underwriters  shall have been
furnished with such  documents and opinions as they may  reasonably  require for
the purpose of enabling  them to pass upon the issuance and sale of the Notes as
herein contemplated and related proceedings or in order to evidence the accuracy
and  completeness  of  any  of  the  representations  and  warranties,   or  the
fulfillment of any of the  conditions,  herein  contained;  and all  proceedings
taken by the Company in  connection  with the  issuance and sale of the Notes as
herein contemplated shall be satisfactory in form and substance to you.


                                      - 9 -

<PAGE>


         If any  condition  specified  in  this  Section  shall  not  have  been
fulfilled when and as required to be fulfilled, this Agreement may be terminated
by you by notice to the Company at any time at or prior to the Closing Time, and
such  termination  shall be without  liability  of any party to any other  party
except as provided in Sections 7(f) and 9.

         6. Covenants of the Company. In further consideration of the agreements
of  the  Underwriters   herein  contained,   the  Company  covenants  with  each
Underwriter as follows:

         (a) To deliver to you one  signed and as many  conformed  copies of the
Registration  Statement  (as  originally  filed) and of each  amendment  thereto
(including  exhibits filed therewith or  incorporated  by reference  therein and
documents  incorporated  by reference in the  Prospectus)  as you may reasonably
request  and will  also  deliver  to you a  conformed  copy of the  Registration
Statement and each amendment thereto for each of the Underwriters.

         (b) Before amending or supplementing the Registration  Statement or the
Prospectus,  whether  pursuant  to  the  Exchange  Act,  the  Securities  Act or
otherwise,  to  furnish  to  you a copy  of  each  such  proposed  amendment  or
supplement  and not to file any such  proposed  amendment or supplement to which
you reasonably object.

         (c) If, during such period after the first date of the public  offering
of  the  Securities  the  Prospectus  is  required  by law  to be  delivered  in
connection  with sales by an  Underwriter  or dealer,  any event  shall occur or
condition  exist as a  result  of  which  it is  necessary,  in the view of your
counsel and counsel for the Company,  to amend or supplement  the  Prospectus in
order to make the statements therein, in the light of the circumstances when the
Prospectus is delivered to a purchaser, not misleading, or if, in the opinion of
both such  counsel,  it is necessary to amend or  supplement  the  Prospectus to
comply with  applicable law,  promptly to prepare,  file with the Commission and
furnish, at its own expense, to the Underwriters and to the dealers (whose names
and addresses you will furnish to the Company) to which Securities may have been
sold by you on behalf of the Underwriters and to any other dealers upon request,
either amendments or supplements to the Prospectus,  whether by filing documents
pursuant  to the  Exchange  Act or  otherwise,  so that  the  statements  in the
Prospectus  as so  amended  or  supplemented  will  not,  in  the  light  of the
circumstances when the Prospectus is delivered to a purchaser,  be misleading or
so that the Prospectus, as amended or supplemented, will comply with law.

         (d) To  notify  each of you  immediately,  and  confirm  the  notice in
writing,  (i)  of  the  effectiveness  of  any  amendment  to  the  Registration
Statement,  (ii) of the mailing or the delivery to the  Commission for filing of
any supplement to the Prospectus or, pending  completion of the  distribution of
the Securities by the Underwriters  pursuant to this Agreement,  any document to
be filed  pursuant to the Exchange Act and  incorporated  by reference  into the
Prospectus,  (iii) of the  receipt  of any  comments  from the  Commission  with
respect  to  the  Registration  Statement,  the  Prospectus  or  any  prospectus
supplement,  (iv) of any  request by the  Commission  for any  amendment  to the
Registration  Statement or any amendment or supplement to the  Prospectus or for
additional  information,  and (v) of the issuance by the  Commission of any stop
order  suspending  the  effectiveness  of  the  Registration  Statement  or  the
initiation of any proceedings for that purpose. The Company


                                     - 10 -

<PAGE>



will make every reasonable effort to prevent the issuance of any stop order and,
if any stop  order is  issued,  to obtain the  lifting  thereof at the  earliest
possible moment.

         (e) The Company,  during the period when the  Prospectus is required to
be delivered under the Securities Act, will file promptly all documents required
to be filed with the  Commission  pursuant  to Section 13 or 14 of the  Exchange
Act.

         (f) To endeavor to qualify the  Securities for offer and sale under the
securities  or Blue Sky laws of such  jurisdictions  of the United States as you
shall reasonably request and maintain such  qualifications in effect for as long
as may be required for the  distribution of the Securities;  provided,  however,
that the  Company  shall not be  required to qualify to do business or to file a
general  consent to service of  process in any such  jurisdiction.  The  Company
will, from time to time,  prepare and file such statements and reports as are or
may be required by the laws of each  jurisdiction  in which the Securities  have
been qualified as above provided.

         (g) To make generally  available to the Company's  security holders and
to you as soon as practicable an earnings  statement  covering the  twelve-month
period  beginning  on the first day of the first full fiscal  quarter  after the
date of this  Agreement  that  satisfies the  provisions of Section 11(a) of the
Securities Act and the rules and regulations of the Commission thereunder.

         (h) During the period  beginning on the date hereof and  continuing  to
and  including  the  Closing  Date,  not to  offer,  sell,  contract  to sell or
otherwise  dispose of any debt securities of the Company or warrants to purchase
debt securities of the Company  substantially  similar to the Securities  (other
than (i) the Securities and (ii) commercial  paper issued in the ordinary course
of  business),  without  the  prior  written  consent  of  Morgan  Stanley & Co.
Incorporated.

         (i) The Company will use the net proceeds  received by it from the sale
of the Notes in the manner specified in the Prospectus under "Use of Proceeds."

         (j) To pay all expenses  incident to the performance of its obligations
under  this  Agreement,  including:  (i)  the  preparation  and  filing  of  the
Registration  Statement and the Prospectus  and all  amendments and  supplements
thereto;  (ii) the preparation,  issuance and delivery of the Securities;  (iii)
the fees and  disbursements of the Company's  counsel and accountants and of the
Trustee and its counsel;  (iv) the  qualification  of the Securities under state
securities or Blue Sky laws in accordance  with the  provisions of Section 6(f),
including  filing fees and the reasonable fees and  disbursements of counsel for
the Underwriters in connection  therewith and in connection with the preparation
of any Blue Sky  Memoranda,  provided that the fees of such counsel for the Blue
Sky  Memorandum  shall not exceed  $5,000;  (v) the printing and delivery to the
Underwriters in quantities as hereinabove  stated of copies of the  Registration
Statement and all amendments thereto and of each preliminary  prospectus and the
Prospectus  and any  amendments or  supplements  thereto;  (vi) the printing and
delivery  to the  Underwriters  of  copies  of the  Indenture  and any  Blue Sky
Memoranda;  (vii) any fees  charged  by rating  agencies  for the  rating of the
Securities; and (viii) the costs and fees of any registrar or transfer agent.



                                     - 11 -

<PAGE>



         7. Indemnity and Contribution.  (a) The Company agrees to indemnify and
hold harmless each Underwriter,  each of its employees,  officers, directors and
agents, and each person, if any, who controls any Underwriter within the meaning
of either  Section 15 of the  Securities  Act or Section 20 of the Exchange Act,
from and against any and all losses, claims,  damages,  liabilities and expenses
(including,  without limitation, any legal or other expenses reasonably incurred
by any Underwriter or any such  controlling  person in connection with defending
or investigating any such action or claim) joint or several, as incurred, caused
by any untrue statement or alleged untrue statement of a material fact contained
in  the  Registration  Statement  or  any  amendment  thereof,  any  preliminary
prospectus or the  Prospectus (as amended or  supplemented  if the Company shall
have furnished any amendments or supplements thereto), or caused by any omission
or alleged  omission  to state  therein a material  fact  required  to be stated
therein or  necessary  to make the  statements  therein not  misleading,  except
insofar as such losses,  claims,  damages or liabilities  are caused by any such
untrue  statement or omission or alleged untrue statement or omission based upon
information  relating to any Underwriter  furnished to the Company in writing by
such Underwriter through you expressly for use therein.

         (b) Each Underwriter  agrees,  severally and not jointly,  to indemnify
and  hold  harmless  the  Company,  its  directors,  its  officers  who sign the
Registration  Statement,  each of its employees  and agents and each person,  if
any,  who controls  the Company  within the meaning of either  Section 15 of the
Securities  Act or  Section  20 of the  Exchange  Act to the same  extent as the
foregoing  indemnity  from  the  Company  to such  Underwriter,  but  only  with
reference to information  relating to such Underwriter  furnished to the Company
in writing by such Underwriter through you expressly for use in the Registration
Statement,  any  preliminary  prospectus,  the  Prospectus or any  amendments or
supplements thereto.

         (c) In case any proceeding  (including any governmental  investigation)
shall be instituted  involving  any person in respect of which  indemnity may be
sought  pursuant to either  paragraph  (a) or (b) of this Section 7, such person
(the  "indemnified  party") shall  promptly  notify the person against whom such
indemnity  may  be  sought  (the  "indemnifying   party")  in  writing  and  the
indemnifying  party, upon request of the indemnified party, shall retain counsel
reasonably  satisfactory to the  indemnified  party to represent the indemnified
party and any others the indemnifying party may designate in such proceeding and
shall pay the fees and disbursements of such counsel related to such proceeding.
In any such proceeding, any indemnified party shall have the right to retain its
own counsel,  but the fees and expenses of such counsel  shall be at the expense
of such indemnified party unless (i) the indemnifying  party and the indemnified
party shall have  mutually  agreed to the  retention of such counsel or (ii) the
named parties to any such proceeding  (including any impleaded  parties) include
both the indemnifying party and the indemnified party and representation of both
parties by the same counsel  would be  inappropriate  due to actual or potential
differing  interests between them. It is understood that the indemnifying  party
shall  not,  in  respect  of the  legal  expenses  of any  indemnified  party in
connection with any proceeding or related  proceedings in the same jurisdiction,
be liable for the fees and expenses of more than one separate  firm (in addition
to any local  counsel) for all such  indemnified  parties and that all such fees
and  expenses  shall be  reimbursed  as they are  incurred.  Such firm  shall be
designated  in  writing  by Morgan  Stanley & Co.  Incorporated,  in the case of
parties  indemnified  pursuant to paragraph (a) above and by the Company, in the
case of parties  indemnified  pursuant to paragraph (b) above.  The indemnifying
party shall not be liable for any


                                     - 12 -

<PAGE>



settlement of any proceeding effected without its written consent but if settled
with  such  consent  or if  there be a final  judgment  for the  plaintiff,  the
indemnifying  party agrees to indemnify the  indemnified  party from and against
any loss or liability by reason of such settlement or judgment.  Notwithstanding
the foregoing sentence, if at any time an indemnified party shall have requested
an indemnifying  party to reimburse the indemnified  party for fees and expenses
of counsel as  contemplated by the second and third sentences of this paragraph,
the indemnifying  party agrees that it shall be liable for any settlement of any
proceeding  effected  without  its  written  consent if (i) such  settlement  is
entered into more than 30 days after receipt by such  indemnifying  party of the
aforesaid request and (ii) such indemnifying party shall not have reimbursed the
indemnified  party in  accordance  with such  request  prior to the date of such
settlement.  No indemnifying  party shall,  without the prior written consent of
the  indemnified  party,  effect any  settlement  of any  pending or  threatened
proceeding  in  respect of which any  indemnified  party is or could have been a
party and indemnity could have been sought hereunder by such indemnified  party,
unless such settlement  includes an  unconditional  release of such  indemnified
party  from  all  liability  on  claims  that  are the  subject  matter  of such
proceeding.

         (d) To the extent the indemnification  provided for in paragraph (a) or
(b) of this Section 7 is unavailable to an indemnified  party or insufficient in
respect of any losses,  claims,  damages,  liabilities  or expenses  referred to
therein,  then  each  indemnifying  party  under  such  paragraph,  in  lieu  of
indemnifying such indemnified  party thereunder,  shall contribute to the amount
paid or payable by such  indemnified  party as a result of such losses,  claims,
damages,  liabilities  or expenses (i) in such  proportion as is  appropriate to
reflect the  relative  benefits  received by the Company on the one hand and the
Underwriters  on the other hand from the offering of the  Securities  or (ii) if
the allocation  provided by clause (i) above is not permitted by applicable law,
in such  proportion as is appropriate to reflect not only the relative  benefits
referred  to in clause (i) above but also the  relative  fault of the Company on
the one hand and of the  Underwriters  on the other hand in connection  with the
statements  or  omissions  that  resulted  in such  losses,  claims,  damages or
liabilities,  as  well  as any  other  relevant  equitable  considerations.  The
relative  benefits  received by the Company on the one hand and the Underwriters
on the other hand in  connection  with the offering of the  Securities  shall be
deemed to be in the same  respective  proportions  as the net proceeds  from the
offering of the Securities  (before deducting  expenses) received by the Company
and  the  total   underwriting   discounts  and  commissions   received  by  the
Underwriters,  in each  case as set  forth  in the  table  on the  cover  of the
Prospectus,  bear to the aggregate Public Offering Price of the Securities.  The
relative fault of the Company on the one hand and the  Underwriters on the other
hand shall be determined by reference to, among other things, whether the untrue
or alleged  untrue  statement  of a  material  fact or the  omission  or alleged
omission to state a material fact relates to information supplied by the Company
or by the Underwriters and the parties'  relative intent,  knowledge,  access to
information  and  opportunity  to correct or prevent such statement or omission.
The Underwriters'  respective obligations to contribute pursuant to this Section
7 are several in proportion to the  respective  principal  amounts of Securities
they have purchased hereunder, and not joint.

         (e) The Company and the Underwriters agree that it would not be just or
equitable if contribution pursuant to this Section 7 were determined by pro rata
allocation  (even  if the  Underwriters  were  treated  as one  entity  for such
purpose) or by any other method of allocation  that does not take account of the
equitable considerations referred to in paragraph (d) of this Section 7.


                                     - 13 -

<PAGE>



The amount  paid or payable by an  indemnified  party as a result of the losses,
claims,  damages,  liabilities  or  expenses  referred  to  in  the  immediately
preceding  paragraph shall be deemed to include,  subject to the limitations set
forth above, any legal or other expenses reasonably incurred by such indemnified
party in connection  with  investigating  or defending any such action or claim.
Notwithstanding  the  provisions  of this  Section  7, no  Underwriter  shall be
required  to  contribute  any  amount in excess of the amount by which the total
price at which the Securities  underwritten  by it and distributed to the public
were  offered  to the  public  exceeds  the  amount  of any  damages  that  such
Underwriter  has  otherwise  been  required  to pay by reason of such  untrue or
alleged untrue  statement or omission or alleged  omission.  No person guilty of
fraudulent  misrepresentation  (within  the  meaning  of  Section  11(f)  of the
Securities  Act) shall be entitled to  contribution  from any person who was not
guilty of such fraudulent  misrepresentation.  The remedies provided for in this
Section 7 are not exclusive and shall not limit any rights or remedies which may
otherwise be available to any indemnified party at law or in equity.

         (f) The indemnity and contribution provisions contained in this Section
7 and the  representations,  warranties  and  other  statements  of the  Company
contained  in this  Agreement  or made by it  pursuant to this  Agreement  shall
remain operative and in full force and effect  regardless of (i) any termination
of  this  Agreement,  (ii)  any  investigation  made  by or  on  behalf  of  any
Underwriter or any person  controlling any Underwriter or by or on behalf of the
Company,  its officers or directors  or any person  controlling  the Company and
(iii) acceptance of and payment for any of the Securities.

         8.  Termination.  This  Agreement  shall be subject to  termination  by
notice given by you to the Company at or prior to the Closing,  if (a) after the
execution  and  delivery of this  Agreement  and prior to the  Closing  Date (i)
trading  generally shall have been suspended or materially  limited on or by, as
the case may be,  either  the New York  Stock  Exchange  or the  American  Stock
Exchange,  (ii)  trading  of any  securities  of the  Company  shall  have  been
suspended on any  exchange or in any  over-the-counter  market,  (iii) a general
moratorium on commercial banking activities in the United States generally or in
New  York  shall  have  been  declared  by  either  Federal  or New  York  State
authorities  or (iv) there shall have  occurred  any outbreak or  escalation  of
hostilities  or any change in financial  markets or any calamity or crisis that,
in your  judgment,  is  material  and  adverse and (b) in the case of any of the
events specified in clauses (a)(i) through (iv), such event,  singly or together
with any other such event,  makes it, in your judgment,  impracticable to market
the Securities on the terms and in the manner contemplated in the Prospectus.

         9. Effectiveness;  Defaulting Underwriters. This Agreement shall become
effective upon the execution and delivery hereof by the parties hereto.

         If, on the Closing Date, any one or more of the Underwriters shall fail
or refuse to  purchase  Securities  that it has or they have  agreed to purchase
hereunder on such date, and the aggregate  principal  amount of Securities which
such  defaulting  Underwriter  or  Underwriters  agreed but failed or refused to
purchase is not more than  one-tenth of the  aggregate  principal  amount of the
Securities  to be  purchased  on such  date,  the  other  Underwriters  shall be
obligated  severally in the proportions  that the principal amount of Securities
set forth opposite their  respective  names in Schedule I bears to the principal
amount of Securities set forth opposite the names of all such


                                     - 14 -

<PAGE>



non-defaulting Underwriters, or in such other proportions as you may specify, to
purchase the Securities which such defaulting Underwriter or Underwriters agreed
but failed or refused to purchase on such date;  provided that in no event shall
the principal  amount of Securities  that any Underwriter has agreed to purchase
pursuant to this Agreement be increased  pursuant to this Section 9 by an amount
in excess of  one-ninth  of such  principal  amount of  Securities  without  the
written consent of such Underwriter. If, on the Closing Date, any Underwriter or
Underwriters  shall  fail or refuse to  purchase  Securities  and the  aggregate
principal amount of Securities with respect to which such default occurs is more
than one-tenth of the aggregate  principal  amount of Securities to be purchased
on such date,  and  arrangements  satisfactory  to you and the  Company  for the
purchase of such  Securities  are not made  within 36 hours after such  default,
this  Agreement   shall  terminate   without   liability  on  the  part  of  any
non-defaulting  Underwriter  or the Company.  In any such case either you or the
Company shall have the right to postpone the Closing  Date,  but in no event for
longer  than seven  days,  in order that the  required  changes,  if any, in the
Registration  Statement  and in the  Prospectus  or in any  other  documents  or
arrangements  may be effected.  Any action taken under this paragraph  shall not
relieve any defaulting  Underwriter  from liability in respect of any default of
such Underwriter under this Agreement.

         If this Agreement  shall be terminated by the  Underwriters,  or any of
them,  because of any  failure  or refusal on the part of the  Company to comply
with the terms or to fulfill any of the conditions of this Agreement,  or if for
any reason the  Company  shall be unable to perform its  obligations  under this
Agreement,  the Company will reimburse the Underwriters or such  Underwriters as
have so terminated this Agreement with respect to themselves, severally, for all
out-of-pocket  expenses  (including the fees and disbursements of their counsel)
reasonably  incurred by such  Underwriters  in connection with this Agreement or
the offering contemplated hereunder.

         10.  Counterparts.  This  Agreement  may  be  signed  in  two  or  more
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

         11.  Applicable  Law. This Agreement shall be governed by and construed
in accordance with the internal laws of the State of New York.

         12. Headings.  The headings of the sections of this Agreement have been
inserted for  convenience  of  reference  only and shall not be deemed a part of
this Agreement.

         13. Notices. All notices and other communications hereunder shall be in
writing and shall be deemed to have been duly given if mailed or  transmitted by
any standard form of  telecommunication.  Notices to the  Underwriters  shall be
directed to you c/o Morgan  Stanley & Co.  Incorporated  at 1585  Broadway,  New
York,  New York,  attention Debt  Syndicate  Department;  notices to the Company
shall be  directed  to it at 626 East  Wisconsin  Avenue,  Milwaukee,  Wisconsin
53202,  attention of Chief  Financial  Officer (with a copy  addressed to Jay O.
Rothman,  Foley &  Lardner,  777 East  Wisconsin  Avenue,  Milwaukee,  Wisconsin
53202).

         14.  Parties.  This  Agreement  shall  inure to the  benefit  of and be
binding  upon you and the  Company,  and their  respective  successors.  Nothing
expressed or mentioned in this


                                     - 15 -

<PAGE>



Agreement  is  intended  or  shall be  construed  to give  any  person,  firm or
corporation,  other  than the  parties  hereto or thereto  and their  respective
successors and the controlling persons and officers and directors referred to in
Section 7 and their  heirs and  legal  representatives,  any legal or  equitable
right,  remedy or claim under or in respect of this  Agreement or any  provision
herein  contained.  This Agreement and all conditions and provisions  hereof are
intended  to be for the sole and  exclusive  benefit  of the  parties  and their
respective  successors and said  controlling  persons and officers and directors
and their  heirs  and legal  representatives,  and for the  benefit  of no other
person,  firm or  corporation.  No purchaser of Securities  from any Underwriter
shall be deemed to be a successor by reason merely of such purchase.




                                     - 16 -

<PAGE>



         If  the  foregoing  correctly  sets  forth  our  understanding,  please
indicate the  Underwriters'  acceptance  thereof in the space provided below for
that  purpose,  whereupon  this letter and the  Underwriters'  acceptance  shall
constitute a binding agreement between us.


                                            Very truly yours,

                                            WISCONSIN GAS COMPANY




                                              By                  
                                                  Name:
                                                  Title:



Accepted as of the date hereof
Morgan Stanley & Co. Incorporated
Robert W. Baird & Co. Incorporated
A.G. Edwards & Sons, Inc.


Acting severally on behalf
of themselves and the
several Underwriters named
herein.


By Morgan Stanley & Co.
          Incorporated



By                                                   
    Name:
    Title:



                                                      - 17 -

<PAGE>


                                                    SCHEDULE I




                                                         Principal Amount
                                                          of Securities
Underwriter                                              To Be Purchased
- ----------                                               ---------------
Morgan Stanley & Co. Incorporated
Robert W. Baird & Co. Incorporated
A.G. Edwards & Sons, Inc.


                                                         -------------------
                           Total....................     ===================







                                                      - 18 -




                                                                    Exhibit 23.1

                  CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS




As independent  public  accountants,  we hereby consent to the  incorporation by
reference in this  registration  statement of our report dated  January 26, 1998
included in Wisconsin  Gas Company's  Form 10-K for the year ended  December 31,
1997 and to all references to our firm included in this registration statement.


                                    /s/ ARTHUR ANDERSON LLP
                                    ARTHUR ANDERSEN LLP

Milwaukee, Wisconsin
January 8, 1999


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