WISCONSIN POWER & LIGHT CO
S-3/A, 1998-08-24
ELECTRIC & OTHER SERVICES COMBINED
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                                                   Registration No. 333-60375

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

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

                        WISCONSIN POWER AND LIGHT COMPANY
             (Exact name of registrant as specified in its charter)

             Wisconsin                                    39-0714890
  (State or other jurisdiction of                      (I.R.S. Employer
   incorporation or organization)                    Identification No.)

                           222 West Washington Avenue
                            Madison, Wisconsin  53703
                                 (608) 252-3311
                        (Address, including zip code, and
                    telephone number, including area code, of
                    registrant's principal executive offices)
                         ______________________________

                                Edward M. Gleason
                Vice President-Treasurer and Corporate Secretary
                        Wisconsin Power and Light Company
                           222 West Washington Avenue
                            Madison, Wisconsin  53703
                                 (608) 252-3311
                       (Name, address, including zip code,
                      and telephone number, including area
                           code, of agent for service)
                         ______________________________

                                 with a copy to:

   Benjamin F. Garmer, III, Esq.                   Barbara L. Becker, Esq.
          Foley & Lardner                           Chadbourne & Parke LLP
     777 East Wisconsin Avenue                       30 Rockefeller Plaza
     Milwaukee, Wisconsin 53202                      New York, NY  10112
           (414) 271-2400                               (212) 408-5100

                            ________________________

        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. [X]

        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) of 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>

                  SUBJECT TO COMPLETION, DATED AUGUST 24, 1998

   PROSPECTUS SUPPLEMENT
   (To Prospectus dated August   , 1998)

                                   $60,000,000

                        Wisconsin Power and Light Company

                          % Debentures due             , 
                              ____________________

             Interest on the    % Debentures due            ,     (the
   "Debentures") is payable semi-annually on              and              of
   each year, commencing           , 199 .  The Debentures will be general
   unsecured obligations of Wisconsin Power and Light Company (the "Company")
   and will rank on a parity with all other unsecured and unsubordinated debt
   of the Company.  The Debentures are not redeemable prior to maturity and
   will not be subject to any sinking fund.

             The Debentures will be represented by one or more global
   securities registered in the name of the nominee of The Depository Trust
   Company ("DTC"), as depositary.  Book-Entry Interests (as defined in the
   accompanying Prospectus) in such global securities will be shown on, and
   transfers thereof will be effected only through, records maintained by DTC
   or its nominee for such global securities and on the records of DTC and
   its participants.  Except as described herein and in the accompanying
   Prospectus, Debentures in definitive form will not be issued.  See
   "Certain Terms of the Debentures" herein and "Description of the
   Debentures" and "Book-Entry Only System" in the accompanying Prospectus.

                                                             

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

                            Price to     Underwriting    Proceeds to
                            Public(1)    Discount(2)    Company (1)(3)

   Per Debenture . . . .           %              %                %   
   Total . . . . . . . .      $            $                $          


   (1)  Plus accrued interest, if any, from the date of issuance.
   (2)  The Company has agreed to indemnify the Underwriters against certain
        liabilities, including liabilities under the Securities Act of 1933,
        as amended.  See "Underwriting."
   (3)  Before deduction of expenses payable by the Company estimated at
        $140,000.

                                                             

      The Debentures are being offered by the several Underwriters, subject
   to prior sale, when, as and if issued to and accepted by them, subject to
   approval of certain legal matters by counsel for the Underwriters and to
   certain other conditions.  The Underwriters reserve the right to withdraw,
   cancel or modify such offer and to reject orders in whole or in part.  It
   is expected that delivery of the Debentures will be made through the book-
   entry facilities of DTC on or about               , 1998 against payment
   therefor in immediately available funds.

   INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT.  A
   REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH
   THE SECURITIES AND EXCHANGE COMMISSION.  THESE SECURITIES MAY NOT BE SOLD
   NOR MAY OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION
   STATEMENT BECOMES EFFECTIVE.  THIS PROSPECTUS AND PROSPECTUS SUPPLEMENT
   SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO
   BUY NOR SHALL THERE BY ANY SALE OF THESE SECURITIES IN ANY STATE IN WHICH
   SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR TO REGISTRATION
   OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY STATE.

                                                             
                          Merrill Lynch & Co.

   Robert W. Baird & Co.                     Legg Mason Wood Walker
       Incorporated                                Incorporated    

                                                             

          The date of this Prospectus Supplement is             , 1998.

   <PAGE>

      CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN
   TRANSACTIONS THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE MARKET PRICE
   OF THE DEBENTURES OFFERED HEREBY.  SUCH TRANSACTIONS MAY INCLUDE
   STABILIZING AND THE PURCHASE OF DEBENTURES TO COVER SHORT POSITIONS.  FOR
   A DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."


                                 USE OF PROCEEDS

      The net proceeds from the sale of the Debentures will be used to repay
   short-term debt which was incurred by the Company to (i) retire at
   maturity $8,899,000 aggregate principal amount of the Company's First
   Mortgage Bonds, Series L, 61/4%, due August 1, 1998 and (ii) finance
   utility construction expenditures and other general corporate
   expenditures.  As of August 15, 1998, the average weighted interest rate
   on the short-term debt to be repaid was approximately 5.569% per annum.

   <PAGE>

                         SELECTED FINANCIAL INFORMATION

        Set forth below is selected financial information for the Company for
   the twelve months ended June 30, 1998 and the years ended December 31,
   1997, 1996 and 1995.

                         Selected Financial Information

                           Twelve Months
                          Ended June 30,              Year Ended
                               1998                  December 31,
                            (Unaudited)    1997           1996           1995
                                                (Thousands of Dollars)
   Income Statement Data:
   Operating Revenues  .      $ 762,960  $794,717      $759,275       $689,672
   Income Before Interest
    Expense  . . . . . .      $  89,296  $103,841      $113,957       $112,473
   Net Income for Common 
    Stock  . . . . . . .      $  49,894  $ 67,924      $ 79,175       $ 75,342
   Ratio of Earnings to
    Fixed Charges       
    (unaudited) (1)  . .           3.12      4.13          4.81           4.23

                                             At June 30, 1998 (Unaudited)   
                                                                Percent of
                                                     As       Capitalization
                                       Actual    Adjusted(2)   As Adjusted
                                      (Thousands of Dollars)
    Capitalization (3):
    Current maturities of
     long-term debt . . . . . . .  $   8,899     $        0            0.0%
    First mortgage bonds, net (4)    249,854        249,854           23.9
    Debentures, net (5) . . . . .    104,732        164,732           15.8
    Preferred stock without
     mandatory redemption . . . .     59,963         59,963            5.7
    Common shareowners'
     investment . . . . . . . . .    571,442        571,442           54.6
                                     -------      ---------          -----
      Total   . . . . . . . . . .  $ 994,890     $1,045,991          100.0%
                                     =======      =========          =====
   _________________
   (1)  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.

   (2)  As adjusted for the issuance of the Debentures and the application of
        the net proceeds as described under "Use of Proceeds."

   (3)  For the purpose of this presentation, capitalization includes current
        maturities of long-term debt.

   (4)  Excludes variable rate demand bonds in the amount of $56.975 million
        and unamortized discount relating to outstanding First Mortgage Bonds
        in the amount of $1.147 million.

   (5)  Excludes unamortized discount relating to outstanding Debentures in
        the amount of $0.268 million.

   <PAGE>

                         CERTAIN TERMS OF THE DEBENTURES

        The following description of the particular terms of the Debentures
   supplements, and to the extent inconsistent therewith replaces, the
   description of the general terms and provisions of the Debentures set
   forth in the accompanying Prospectus under "Description of the
   Debentures," to which description reference is hereby made.

   General

        The Debentures will be unsecured general obligations of the Company
   and will be issued as a separate series of securities under the Indenture,
   dated as of June 20, 1997 (the "Unsecured Debt Indenture"), between the
   Company and Firstar Trust Company, as Trustee.  As of the date hereof, the
   Company had $105,000,000 of Securities (as defined in the accompanying
   Prospectus) outstanding under the Indenture and $307,976,000 of secured
   debt outstanding under its First Mortgage Indenture (as defined in the
   accompanying Prospectus).  The Unsecured Debt Indenture does not limit the
   Company's ability to issue additional First Mortgage Bonds or to enter
   into sale and leaseback transactions.  

   Maturity and Interest

        The Debentures will be limited to $60,000,000 aggregate principal
   amount and will mature on            ,     .  Each Debenture will bear
   interest from            , 199   or from the most recent interest payment
   date to which interest has been paid, at the rate per annum specified on
   the cover page hereof, payable semi-annually on            and           ,
   commencing               , 199  , to the person in whose name such
   Debenture is registered at the close of business on the preceding          
    and            , respectively.

   No Redemption Prior to Maturity

        The Debentures will not be redeemable prior to maturity.

   Other Terms

        The covenant described in the accompanying Prospectus under
   "Description of the Debentures--Certain Covenants--Limitations on Liens"
   will apply to the Debentures.  Future series of Securities issued under
   the Unsecured Debt Indenture may or may not have different covenants.

        The Debentures will be subject to defeasance under the conditions
   described in the accompanying Prospectus.  The Unsecured Debt Indenture is
   governed by the laws of the State of Wisconsin.

   Book-Entry Procedures

        The Debentures will be represented by one or more global securities
   registered in the name of DTC or its nominee.  Book-Entry Interests in
   such global securities will be shown on, and transfers thereof will be
   effected only through, records maintained by DTC or its nominee for such
   global securities and on the records of DTC Participants (as defined in
   the accompanying Prospectus).  Except as described below and in the
   accompanying Prospectus, Debentures in definitive form will not be issued
   and owners of Book-Entry Interests will not be considered the holders
   thereof.

        The laws of some states require that certain purchasers of securities
   take physical delivery of such securities in definitive form.  Such limits
   and such laws may impair the ability to transfer beneficial interests in
   the global securities.

        In the event that the book-entry system is discontinued, or DTC is at
   any time unwilling or unable to continue as depositary, and a successor
   depositary is not appointed by the Company within 90 days, the Company
   will issue individual Debentures in certificated form to owners of Book-
   Entry Interests in exchange for the Debentures held by DTC or its nominee,
   as the case may be.

        Settlement for the Debentures will be made by the Underwriters in
   immediately available funds.  All payments of principal and interest on
   global securities will be made by the Company in immediately available
   funds.

        See "Book-Entry Only System" in the accompanying Prospectus.

                                  UNDERWRITING

        Subject to the terms and conditions set forth in a purchase agreement
   (the "Purchase Agreement") among the Company and Merrill Lynch, Pierce,
   Fenner & Smith Incorporated, acting on behalf of itself, Robert W. Baird &
   Co. Incorporated and Legg Mason Wood Walker, Incorporated (collectively,
   the "Underwriters"), the Company has agreed to sell to the Underwriters,
   and the Underwriters have severally agreed to purchase, the respective
   principal amounts of the Debentures set forth after their names below.

                                                       Principal
           Underwriters                                  Amount  

    Merrill Lynch, Pierce, Fenner & Smith
         Incorporated . . . . . . . . . . . . . .     $           
    Robert W. Baird & Co. Incorporated  . . . . .                 
    Legg Mason Wood Walker, Incorporated  . . . .

         Total  . . . . . . . . . . . . . . . . .      $60,000,000
                                                        ==========

        The Purchase Agreement provides that the obligations of the
   Underwriters are subject to certain conditions precedent and that the
   Underwriters will be obligated to purchase all of the Debentures if any
   are purchased.

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

        The Debentures are a new issue of securities with no established
   trading market.  The Company does not intend to list the Debentures on any
   securities exchange.  The Underwriters have advised the Company that they
   currently intend to make a market in the Debentures; however, the
   Underwriters are not obligated to do so, and any Underwriter may
   discontinue any such market making at any time without notice.  No
   assurance can be given as to the liquidity of the trading market for the
   Debentures.

        Until the distribution of the Debentures is completed, rules of the
   Securities and Exchange Commission may limit the ability of the
   Underwriters to bid for and purchase the Debentures.  As an exception to
   these rules, Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill
   Lynch"), as representative, will be permitted to engage in certain
   transactions that stabilize the price of the Debentures.  Such
   transactions consist of bids or purchases for the purpose of setting,
   fixing or maintaining the price of the Debentures.

        If the Underwriters create a short position in the Debentures in
   connection with the Offering, i.e., if they sell more of the Debentures
   than are set forth on the cover page of this Prospectus Supplement,
   Merrill Lynch may reduce that short position by purchasing Debentures in
   the open market.

        In general, purchases of a security for the purpose of stabilization
   or to reduce a short position could cause the price of the security to be
   higher than it might be in the absence of such purchases.

        Neither the Company nor the Underwriters make any representation or
   prediction as to the direction or magnitude of any effect that the
   transactions described above may have on the prices of the Debentures.  In
   addition, neither the Company nor the Underwriters make any representation
   that Merrill Lynch will engage in such transactions or that such
   transactions, once commenced, will be discontinued without notice.

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

   <PAGE>

   PROSPECTUS
                                   $60,000,000

                        Wisconsin Power and Light Company

                                   Debentures
                              ____________________

        Wisconsin Power and Light Company (the "Company") may from time to
   time offer up to $60 million aggregate principal amount of its unsecured
   debt securities consisting of notes, debentures or other evidences of
   indebtedness (the "Debentures").  The Debentures will be offered to the
   public on terms determined at the time or times of sale.  An accompanying
   supplement to this Prospectus (the "Prospectus Supplement") will set forth
   the specific terms and conditions of the Debentures offered thereby,
   including, without limitation, the title, aggregate principal amount,
   denominations, maturity, rate (which may be fixed or variable) and time of
   payment of interest, any terms for redemption or conversion, any terms for
   sinking or analogous fund payment(s), any listing on a registered national
   securities exchange and the initial public offering price.

        The Company may sell the Debentures to or through underwriters (which
   may include Merrill Lynch, Pierce, Fenner & Smith Incorporated, Robert W.
   Baird & Co. Incorporated and Legg Mason Wood Walker, Incorporated) or
   dealers, and may also sell Debentures directly to other purchasers or
   through agents designated from time to time by the Company.  See "Plan of
   Distribution."  The names of such underwriters, dealers or agents, any
   applicable commissions or discounts and the net proceeds to the Company
   from the sale of the Debentures will be set forth in the accompanying
   Prospectus Supplement.

        No Debentures may be sold without delivery of a Prospectus Supplement
   describing such issue of such Debentures and the method and terms of
   offering thereof.

        The issue and sale of the Debentures are subject to the prior
   approval and authorization of the Public Service Commission of Wisconsin,
   which has been or will be obtained prior to the sale of the Debentures.
                                                             

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


                               Merrill Lynch & Co.
   Robert W. Baird & Co.                               Legg Mason Wood Walker
        Incorporated                                         Incorporated    

                                                             

                 The date of this Prospectus is August   , 1998

   <PAGE>

                              AVAILABLE INFORMATION

   The Company is subject to the informational requirements of the Securities
   Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
   therewith files reports, proxy statements and other information with the
   Securities and Exchange Commission (the "Commission").  Reports, proxy
   statements and other information filed by the Company can be inspected and
   copied at the public reference facilities maintained by the Commission at
   Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C.
   20549, and at the following Regional Offices of the Commission:  Midwest
   Regional Office, Citicorp Center, 500 West Madison Street, Suite 1400,
   Chicago, Illinois 60661; and Northeast Regional Office, 7 World Trade
   Center, Suite 1300, New York, New York 10048.  Copies of such material can
   be obtained from the Public Reference Section of the Commission at 450
   Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.  In
   addition, such reports, proxy statements and other information concerning
   the Company can be inspected at the offices of the American Stock
   Exchange, 86 Trinity Place, New York, New York 10006.  Certain securities
   of the Company are listed on such exchange.

             In addition, the Commission maintains a Web site that contains
   reports, proxy and information statements and other information regarding
   registrants that file electronically with the Commission.  The address of
   such Web site is http://www.sec.gov.

             The Company has filed with the Commission a Registration
   Statement on Form S-3 (together with all amendments, schedules and
   exhibits thereto referred to herein as the "Registration Statement") under
   the Securities Act of 1933, as amended, with respect to the Debentures
   offered hereby.  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
   which may be inspected and copied in the manner and at the sources
   described above.


                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE 

             The following documents heretofore filed by the Company (under
   File No. 0-337) with the Commission pursuant to the Exchange Act (to the
   extent disclosures therein relate to the Company) are hereby incorporated
   herein by reference:

          1.  The Company's Annual Report on Form 10-K for the year ended
     December 31, 1997.

          2.  The Company's Quarterly Reports on Form 10-Q for the quarters
     ended March 31, 1998 and June 30, 1998.

          3.  The Company's Current Reports on Form 8-K dated April 21 and
          June 10, 1998.

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

          The Company will provide without charge to each person, including
   any beneficial owner, to whom this Prospectus is delivered, upon written
   or oral request of such person, a copy of any or all of the documents that
   have been or may be incorporated by reference in this Prospectus (not
   including exhibits to such documents unless such exhibits are specifically
   incorporated by reference into such documents).  Requests should be
   directed to Edward M. Gleason, Vice President-Treasurer and Corporate
   Secretary, Wisconsin Power and Light Company, 222 West Washington Avenue,
   Madison, Wisconsin 53703 (Telephone:  (608) 252-3311).

                                  THE COMPANY 

          The Company, a Wisconsin corporation and a subsidiary of Interstate
   Energy Corporation (f/k/a WPL Holdings, Inc.) d/b/a Alliant Corporation
   ("IEC"), is a public utility engaged primarily in generating, purchasing,
   distributing and selling electric energy in portions of southern and
   central Wisconsin.  The Company also purchases, distributes, transports
   and sells natural gas in parts of such areas and supplies water in two
   communities.  A wholly owned subsidiary of the Company supplies electric,
   gas and water service principally in Winnebago County, Illinois.

          The Company provides electricity in a service territory of
   approximately 16,000 square miles.  As of December 31, 1997, the Company
   furnished retail electric service to approximately 393,000 customers in
   615 cities, villages and towns, and wholesale electric service to 25
   municipal utilities, one privately owned utility, three rural electric
   cooperatives, one Native American nation and one municipal electric
   utility which provides retail service to 14 communities.  During 1997, the
   Company's electric operating revenues were derived from the following
   types of customers:  residential--31.5%, commercial--16.9%,
   industrial--24.0%, sales for resale--25.4%, and other--2.3%.

          The maximum net hourly peak load on the Company's electric system
   in 1997 was 2,253 megawatts.  During 1997, the Company's net kilowatt-hour
   generation of electricity was derived from the following fuel sources: 
   86% coal, 10% nuclear and 4% hydroelectric, oil and natural gas.

          As of December 31, 1997, the Company provided retail natural gas
   service to approximately 155,000 customers in 243 cities, villages and
   towns.  During 1997, the Company's gas operating revenues were derived
   from the following types of customers:  residential--54.2%,
   commercial--29.2%, industrial--5.4%, transportation and other--11.2%.

          The Company is subject to the jurisdiction of, among other
   regulatory agencies, the Public Service Commission of Wisconsin as to
   various phases of its operations, including rates, service and issuance of
   securities.  The Company's Illinois subsidiary is subject to the
   jurisdiction of the Illinois Commerce Commission with respect to such
   matters.  The Company and its Illinois subsidiary also are subject to the
   jurisdiction of the Federal Energy Regulatory Commission.  The Company's
   parent corporation, IEC, is a registered public utility holding company
   under (and IEC and, with respect to certain matters, the Company, are
   subject to the requirements of) the Public Utility Holding Company Act of
   1935, as amended.

          The principal executive offices of the Company are located at 222
   West Washington Avenue, Madison, Wisconsin 53703 and its telephone number
   is (608) 252-3311.

                                 USE OF PROCEEDS

          The Company intends to use the net proceeds from the sale of the
   Debentures offered hereby to repay indebtedness, including the retirement,
   redemption or refinancing of existing series of the Company's First
   Mortgage Bonds.  Unless otherwise specified in the Prospectus Supplement,
   any proceeds not used for the foregoing purpose will be added to the
   general funds of the Company and used for general corporate purposes.

                       RATIOS OF EARNINGS TO FIXED CHARGES

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

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

        3.12         4.13      4.81       4.23      4.29      3.74

          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.


                          DESCRIPTION OF THE DEBENTURES

          The Debentures will be issued in one or more series under the
   Indenture, dated as of June 20, 1997 (the "Unsecured Debt Indenture"),
   between the Company and Firstar Trust Company, as Trustee (the "Trustee"),
   which is included as an exhibit to the Registration Statement for the
   Debentures.  The following summaries of certain provisions of the
   Unsecured Debt Indenture and the Debentures do not purport to be complete
   and are subject to, and qualified in their entirety by reference to, all
   of the provisions of the Unsecured Debt Indenture and any Officers'
   Certificates or supplemental indentures relating thereto, including the
   definitions therein of certain terms.  Whenever particular Sections or
   defined terms of the Unsecured Debt Indenture are referred to herein or in
   a Prospectus Supplement, such Sections or defined terms are incorporated
   by reference herein or therein, as the case may be.

          The term "Securities," as used under this heading, refers to all
   Securities issued under the Unsecured Debt Indenture and includes the
   Debentures.

   General

          The Unsecured Debt Indenture does not limit the amount of
   Securities that can be issued thereunder and provides that the Securities
   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 such series.  As of the date of this Prospectus, the only
   Securities outstanding under the Unsecured Debt Indenture are $105 million
   aggregate principal amount of the Company's 7% Debentures due June 15,
   2007.  The Debentures will be unsecured and will rank on a parity with all
   other unsecured and unsubordinated debt of the Company.  Although the
   Unsecured Debt Indenture provides for the possible issuance of Securities
   in other forms or currencies, the only Securities covered by this
   Prospectus will be Securities denominated in U.S. dollars in registered
   form without coupons.

          Substantially all of the permanent fixed properties of the Company
   are subject to the lien of the Indenture of Mortgage or Deed of Trust,
   dated August 1, 1941, executed by the Company to First Wisconsin Trust
   Company (now known as Firstar Trust Company) and George B. Luhman (Gene E.
   Ploeger being now the individual trustee under said Indenture), as
   Trustees, as amended by the several indentures supplemental thereto
   heretofore executed (said Indenture, as so amended, being herein called
   the "First Mortgage Indenture"), under which the Company's First Mortgage
   Bonds are outstanding.

   Terms

          Reference is made to the Prospectus Supplement relating to any
   series of the Debentures for the following terms thereof, among others: 
   (a) the title or designation, aggregate principal amount and denominations
   of the Debentures; (b) the price at which the Debentures will be issued
   and, if an index formula or other method is used, the method for
   determining amounts of principal or interest; (c) the maturity date and
   other dates, if any, on which principal will be payable; (d) the rate or
   rates (which may be fixed or variable) per annum at which the Debentures
   will bear interest, if any; (e) the date or dates from which interest will
   accrue and on which interest will be payable, and the record dates for the
   payment of interest; (f) the manner of paying principal and interest; (g)
   the place or places where principal and interest will be payable; (h) the
   terms of any mandatory or optional redemption by the Company; (i) the
   terms of any redemption at the option of Holders; (j) whether the
   Debentures are to be issuable as registered Securities, bearer Securities,
   or both, and whether and upon what terms any registered Securities may be
   exchanged for bearer Securities and vice versa; (k) whether the Debentures
   are to be represented in whole or in part by a Security in global form
   and, if so, the terms thereof and the identity of the depositary for any
   global Security; (l) any tax indemnity provisions; (m) if the Debentures
   provide that payments of principal or interest may be made in a currency
   other than that in which Debentures are denominated, the manner for
   determining such payments; (n) the portion of principal payable upon
   acceleration of a Discounted Security (as defined below); (o) whether and
   upon what terms Debentures may be defeased; (p) whether the covenant
   referred to below under "Certain Covenants--Limitations on Liens" applies,
   and any events of default or restrictive covenants in addition to or in
   lieu of those set forth in the Unsecured Debt Indenture; (q) provisions
   for electronic issuance of Debentures or for Debentures in uncertificated
   form; and (r) any additional provisions or other special terms not
   inconsistent with the provisions of the Unsecured Debt Indenture,
   including any terms that may be required or advisable under United States
   or other applicable laws or regulations, or advisable in connection with
   the marketing of the Debentures.  (Section 2.01)

          The Securities of a series may be issued in whole or in part in the
   form of one or more global Securities that will be deposited with, or on
   behalf of, a depositary identified in the Prospectus Supplement relating
   to the series.  Global Securities may be issued in registered, bearer or
   uncertificated form and in either temporary or permanent form.  Unless and
   until it is exchanged in whole or in part for Securities in definitive
   form, a global Security may not be transferred except as a whole by the
   depositary to a nominee or a successor depositary.  (Section 2.12)  The
   specific terms of the depositary arrangement with respect to any
   Securities of a series will be described in the Prospectus Supplement
   relating to the series.  See "Book-Entry Only System."

          Securities of any series may be issued as registered Securities,
   bearer Securities or uncertificated Securities, as specified in the terms
   of the series.  (Section 2.01)  Unless otherwise indicated in the
   Prospectus Supplement, registered Securities will be issued in
   denominations of $1,000 and whole multiples thereof and bearer Securities
   will be issued in denominations of $5,000 and whole multiples thereof. 
   One or more global Securities will be issued in a denomination or
   aggregate denominations equal to the aggregate principal amount of
   outstanding Securities of the series to be represented by such global
   Security or Securities.  (Section 2.12)

          In connection with its original issuance, no bearer Security will
   be offered, sold, resold, or mailed or otherwise delivered to any location
   in the United States and a bearer Security in definitive form may be
   delivered in connection with its original issuance only if the person
   entitled to receive the bearer Security furnishes certification as
   described in United States Treasury regulation section
   1.163-5(c)(2)(i)(D)(3).  (Section 2.04)

          For purposes of this Prospectus, unless otherwise indicated,
   "United States" means the United States of America (including the States
   thereof and the District of Columbia), its territories and possessions and
   all other areas subject to its jurisdiction.  "United States person" means
   a citizen or resident of the United States, any corporation, partnership
   or other entity created or organized in or under the laws of the United
   States or a political subdivision thereof or any estate or trust the
   income of which is subject to United States Federal income taxation
   regardless of its source.  Any special United States Federal income tax
   considerations applicable to bearer Securities will be described in the
   Prospectus Supplement relating thereto.

          To the extent set forth in the Prospectus Supplement, except in
   special circumstances set forth in the Unsecured Debt Indenture, principal
   and interest on bearer Securities will be payable only upon surrender of
   bearer Securities and coupons at a paying agency of the Company located
   outside of the United States.  During any period thereafter for which it
   is necessary in order to conform to United States tax law or regulations,
   the Company will maintain a paying agent outside the United States to
   which the bearer Securities and coupons may be presented for payment and
   will provide the necessary funds therefor to the paying agent upon
   reasonable notice.  (Section 2.04)

          Registration of transfer of registered Securities may be requested
   upon surrender thereof at any agency of the Company maintained for that
   purpose and upon fulfillment of all other requirements of the agent. 
   (Sections 2.03 and 2.07)  Bearer Securities and the coupons related
   thereto will be transferable by delivery.

          Securities may be issued under the Unsecured Debt Indenture as
   Discounted Securities to be offered and sold at a substantial discount
   from the principal amount thereof.  Special United States Federal income
   tax and other considerations applicable thereto will be described in the
   Prospectus Supplement relating to such Discounted Securities.  "Discounted
   Security" means a Security where the amount of principal due upon
   acceleration is less than the stated principal amount of such Security.

   Certain Covenants

          The Debentures will not be secured by any properties or assets and
   will represent unsecured debt of the Company.  The Unsecured Debt
   Indenture does not limit the amount of unsecured debt that the Company can
   incur.  As indicated under "General" above, substantially all of the
   permanent fixed properties of the Company are subject to the lien of the
   First Mortgage Indenture securing the Company's First Mortgage Bonds.

          As discussed below, the Unsecured Debt Indenture includes certain
   limitations on the Company's ability to create liens.  Such limitations
   will apply if the Officers' Certificate or supplemental indenture
   establishing the terms of a series so provides.  If applicable, the
   limitations are subject to a number of qualifications and exceptions.  The
   Unsecured Debt Indenture does not limit the Company's ability to issue
   additional First Mortgage Bonds or to enter into sale and leaseback
   transactions.

          The covenant described below will apply if so indicated in a
   Prospectus Supplement.  Any obligations under the Unsecured Debt Indenture
   are subject to termination upon defeasance.  See "Legal Defeasance and
   Covenant Defeasance" below.  Also, unless otherwise indicated in a
   Prospectus Supplement, the Unsecured Debt Indenture does not afford
   holders of the Securities protection in the event of a highly leveraged or
   other transaction involving the Company that may adversely affect holders
   of the Securities.

          Limitations on Liens.  The Unsecured Debt Indenture provides that,
   so long as there remain outstanding any Securities of any series to which
   this limitation applies, and subject to termination as referred to above,
   the Company will not, and will not permit any Subsidiary to, create or
   suffer to be created or to exist any mortgage, pledge, security interest,
   or other lien (collectively, "Lien") on any of its properties or assets
   now owned or hereafter acquired to secure any indebtedness, without making
   effective provision whereby the Securities of such series shall be equally
   and ratably secured with (or prior to) any and all such indebtedness and
   with any other indebtedness similarly entitled to be equally and ratably
   secured.  This restriction does not apply to or prevent the creation or
   existence of (a) the First Mortgage Indenture securing the Company's First
   Mortgage Bonds or any indenture supplemental thereto subjecting any
   property to the Lien thereof or confirming the Lien thereof upon any
   property, whether owned before or acquired after the date of the Unsecured
   Debt Indenture; (b) Liens 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 thereof, including the
   extension of any such Liens to repairs, renewals, replacements,
   substitutions, betterments, additions, extensions and improvements then or
   thereafter made on the property subject thereto; (c) any extensions,
   renewals or replacements (or successive extensions, renewals or
   replacements), in whole or in part, of Liens (including, without
   limitation, the First Mortgage Indenture) permitted by the foregoing
   clauses (a) and (b); (d) the pledge of any bonds or other securities at
   any time issued under any of the Liens permitted by clauses (a), (b) or
   (c) above; or (e) Permitted Encumbrances.  (Section 4.07)

          "Permitted Encumbrances" include, among other items, (a) the pledge
   or assignment in the ordinary course of business of electricity, gas
   (either natural or artificial) or steam, accounts receivable or customers'
   installment paper, (b) Liens affixing to property of the Company or a
   Subsidiary at the time a Person consolidates with or merges into, or
   transfers all or substantially all of its assets to, the Company or a
   Subsidiary, provided that in the opinion of the Board of Directors of the
   Company or Company management (evidenced by a certified Board resolution
   or an Officers' Certificate delivered to the Trustee) the property
   acquired pursuant to the consolidation, merger or asset transfer is
   adequate security for the Lien; and (c) Liens or encumbrances not
   otherwise permitted if, at the incurrence of and after giving effect
   thereto, the aggregate of all obligations of the Company and its
   Subsidiaries secured thereby does not exceed 10% of Tangible Net Worth. 
   "Tangible Net Worth" means (i) common stockholders' equity appearing on
   the most recent balance sheet of the Company (or consolidated balance
   sheet of the Company and its Subsidiaries if the Company then has one or
   more consolidated Subsidiaries) prepared in accordance with generally
   accepted accounting principles less (ii) intangible assets (excluding
   intangible assets recoverable through rates as prescribed by applicable
   regulatory authorities).  (Section 4.06)

          Further, this restriction will not apply to or prevent the creation
   or existence of leases made, or existing on property acquired, in the
   ordinary course of business.  (Section 4.07)

          Other Covenants.  Any other restrictive covenants which may apply
   to a particular series of Securities will be described in the Prospectus
   Supplement relating thereto.

   Successor Obligor

          The Unsecured Debt Indenture provides that, unless otherwise
   specified in the Officers' Certificate or supplemental indenture
   establishing a series of Securities, the Company will not consolidate
   with, or sell or convey all or substantially all of its assets to, or
   merge with or into any other Person unless (i) either the Company will be
   the continuing corporation, or the Person will be a Person organized and
   existing under the laws of the United States of America or a state thereof
   and the Person will expressly assume the due and punctual payment of the
   principal of and interest on all the Securities and any coupons and the
   due and punctual performance and observance of all of the covenants and
   conditions of the Company under the Unsecured Debt Indenture by
   supplemental indenture satisfactory to the Trustee, executed and delivered
   to the Trustee by such Person; (ii) the Company or the Person, as the case
   may be, will not, immediately after the merger or consolidation, or the
   sale or conveyance, be in default in the performance of any such covenant
   or condition; and (iii) after giving effect to the transaction, no event
   which, after notice or lapse of time, would become a Default (as defined)
   will have occurred or be continuing.  (Section 5.01)  The successor will
   be substituted for the Company, and thereafter all obligations of the
   Company under the Unsecured Debt Indenture, the Securities and any coupons
   shall terminate.  (Section 5.02)

   Exchange of Securities

          Registered Securities may be exchanged for an equal aggregate
   principal amount of registered Securities of the same series and date of
   maturity in such authorized denominations as may be requested upon
   surrender of the registered Securities at an agency of the Company
   maintained for such purpose and upon fulfillment of all other requirements
   of the agent.  (Section 2.07)

          To the extent permitted by the terms of a series of Securities
   authorized to be issued in registered form and bearer form, bearer
   Securities may be exchanged for an equal aggregate principal amount of
   registered or bearer Securities of the same series and date of maturity in
   such authorized denominations as may be requested upon surrender of the
   bearer Securities with all unpaid coupons relating thereto (except as may
   otherwise be provided in the Securities) at an agency of the Company
   maintained for such purpose and upon fulfillment of all other requirements
   of the agent.  (Section 2.07)  As of the date of this Prospectus, it is
   expected that the terms of a series of Securities will not permit
   registered Securities to be exchanged for bearer Securities.

   Defaults and Remedies

          Unless the Officers' Certificate or supplemental indenture
   establishing the series otherwise provides, an "Event of Default" with
   respect to a series of Securities will occur if:

          (1)  the Company defaults in any payment of interest on any
     Securities of the series when the same becomes due and payable and the
     Default continues for a period of 60 days;

          (2)  the Company defaults in the payment of the principal of any
     Securities of the series when the same becomes due and payable at
     maturity or upon redemption, acceleration or otherwise;

          (3)  the Company defaults in the payment or satisfaction of any
     sinking fund obligation with respect to any Securities of a series as
     required by the Officers' Certificate or supplemental indenture
     establishing such series and the Default continues for a period of 60
     days;

          (4)  the Company defaults in the performance of any of its other
     agreements applicable to the series and the Default continues for 90
     days after the notice specified below;

          (5)  the Company pursuant to or within the meaning of any
     Bankruptcy Law:

               (a)  commences a voluntary case,

               (b)  consents to the entry of an order for relief against it
          in an involuntary case,

               (c)  consents to the appointment of a Custodian for it or for
          all or substantially all of its property, or

               (d)  makes a general assignment for the benefit of its
          creditors;

          (6)  a court of competent jurisdiction enters an order or decree
     under any Bankruptcy Law that:

               (a)  is for relief against the Company in an involuntary case,

               (b)  appoints a Custodian for the Company or for all or
          substantially all of its property, or

               (c)  orders the liquidation of the Company, and the order or
          decree remains unstayed and in effect for 60 days; or

          (7)  there occurs any other Event of Default provided for in the
     series.  (Section 6.01)

          The term "Bankruptcy Law" means Title 11, U.S. Code or any similar
   Federal or State law for the relief of debtors.  The term "Custodian"
   means any receiver, trustee, assignee, liquidator or a similar official
   under any Bankruptcy Law.  (Section 6.01)

          "Default" means any event which is, or after notice or passage of
   time would be, an Event of Default.  A Default under subparagraph (4)
   above is not an Event of Default until the Trustee or the Holders of at
   least 25% in principal amount of the series notify the Company of the
   Default and the Company does not cure the Default within the time
   specified after receipt of the notice.  (Section 6.01)  The Trustee may
   require indemnity reasonably satisfactory to it before it enforces the
   Unsecured Debt Indenture or the Securities of the series.  (Section 7.01) 
   Subject to certain limitations, Holders of a majority in principal amount
   of the Securities of the series may direct the Trustee in its exercise of
   any trust or power.  (Section 6.05)  The Trustee may withhold from the
   Holder of the Security notice of any continuing Default (except a Default
   in payment of principal or interest) if it in good faith determines that
   withholding notice is in their interest.  (Section 7.04)  The Company is
   required to furnish the Trustee, not less than annually, a brief
   certificate as to the Company's compliance with all conditions and
   covenants under the Unsecured Debt Indenture.  (Section 4.04)

          The failure to redeem any Securities subject to a Conditional
   Redemption (as defined) is not an Event of Default if any event on which
   such redemption is so conditioned does not occur before the redemption
   date.  (Section 6.01)

          The Unsecured Debt Indenture does not have a cross-default
   provision.  Thus, a default by the Company on any other debt would not
   constitute an Event of Default.

   Amendments and Waivers

          The Unsecured Debt Indenture and the Securities or any coupons of
   the series may be amended, and any default may be waived as follows:  the
   Holders of a majority in principal amount of a series by notice to the
   Trustee may waive an existing Default on the series and its consequences
   except: (a) a Default in the payment of the principal of or interest on
   the series, or (b) a Default in respect of a provision described in this
   paragraph that cannot be amended without the consent of the Holder of each
   Security affected thereby.  (Section 6.04)  The Securities and the
   Unsecured Debt Indenture may be amended with the consent of the Holders of
   not less than a majority in aggregate principal amount of the Securities
   of all series affected voting as one class.  (Section 9.02)  However,
   without the consent of each Holder of Security affected thereby, no
   amendment or waiver may (a) extend the stated maturity of the principal
   of, or any installment or principal of or interest on, any such Security,
   or reduce the principal amount thereof or the rate of interest thereon or
   premium (if any), payable upon the redemption thereof, or reduce the
   obligation of the Company to pay principal amounts, or reduce the amount
   of the principal of a Discounted Security that would be due and payable
   upon a declaration of acceleration of the maturity or change the coin or
   currency in which, any such Security of such series or any principal,
   premium (if any), or interest thereon is payable or impair the right to
   institute suit for the enforcement of any such payment on or after the due
   date thereof (or, in the case of redemption, on or after the redemption
   date), or (b) reduce the percentage in principal amount of the outstanding
   Securities of any series, the consent of whose Holders is required for any
   modifications or amendments to the Unsecured Debt Indenture or to the
   terms and conditions of that series of Securities, or to approve any
   supplemental indenture relating to such series, or the consent of whose
   Holders is required for any waiver with respect to such series (of
   compliance with certain provisions of the Unsecured Debt Indenture or
   certain default thereunder and their consequences) provided for in the
   Unsecured Debt Indenture, or (c) modify any of the provisions described
   under this paragraph, except to increase any such percentage or to provide
   that certain other provisions of the Unsecured Debt Indenture cannot be
   modified or waived without the consent of the Holder of each Security
   affected thereby.  (Section 9.02)

          Without the consent of any Holders, the Company may enter into one
   or more supplemental indentures, in order among other things (a) to
   evidence the succession of another Person to the Company and the
   assumption by any such successor of the covenants of the Company contained
   in the Unsecured Debt Indenture and in the Securities; (b) to add to,
   change or eliminate any of the provisions of the Unsecured Debt Indenture
   in respect of one or more series of Securities; provided, however, that
   any such addition, change or elimination shall either (i) not adversely
   affect the rights of the Holders of series in any material respect, or
   (ii) not apply to any series of Securities created prior to the execution
   of such supplemental indenture where such addition, change or elimination
   has an adverse effect on the right of the Holders of such Securities in
   any material respect; (c) to establish the form or terms of Securities of
   any series as permitted pursuant to the Unsecured Debt Indenture; (d) to
   evidence and provide for the acceptance of appointment under the Unsecured
   Debt Indenture by a successor Trustee with respect to the Securities of
   one or more series and to add to or change any of the provisions of the
   Unsecured Debt Indenture as shall be necessary to provide for or
   facilitate the administration of the trusts thereunder by more than one
   Trustee; or (e) to cure any ambiguity or defect in and to correct or
   supplement any provision in the Unsecured Debt Indenture or any Security
   of any series that may be inconsistent with any other provision in the
   Unsecured Debt Indenture or in the Security of such series, or to make any
   other provisions with respect to matters or questions arising under the
   Unsecured Debt Indenture; provided, however, that any such action pursuant
   to this clause (e) shall not adversely affect the rights of the Holders of
   Securities of any series in any material respect.  (Section 9.01)

   Legal Defeasance and Covenant Defeasance

          Securities of a series may be defeased in accordance with their
   terms and, unless the Officers' Certificate or supplemental indenture
   establishing the terms of the series otherwise provides, as set forth
   below.  The Company at any time may terminate as to a series all of its
   obligations (except for certain obligations, including obligations with
   respect to the defeasance trust and obligations to register the transfer
   or exchange of a Security, to replace destroyed, lost or stolen Securities
   and coupons and to maintain agencies in respect of the Securities) with
   respect to the Securities of the series and any related coupons and the
   Unsecured Debt Indenture ("legal defeasance").  The Company at any time
   may terminate as to a series its obligations with respect to the
   Securities and coupons of the series under the covenant described under
   "Certain Covenants--Limitations on Liens" and any other restrictive
   covenants which may be applicable to a particular series ("covenant
   defeasance").

          The Company may exercise its legal defeasance option
   notwithstanding its prior exercise of its covenant defeasance option.  If
   the Company exercises its legal defeasance option, a series may not be
   accelerated because of an Event of Default.  If the Company exercises its
   covenant defeasance option, a series may not be accelerated by reference
   to the covenant described under "Certain Covenants--Limitations on Liens"
   or any other restrictive covenants which may be applicable to a particular
   series.  (Section 8.01)

          To exercise either defeasance option as to a series, the Company
   must deposit in trust (the "defeasance trust") with the Trustee money or
   U.S. Government Obligations for the payment of principal, premium, if any,
   and interest on the Securities of the series to redemption or maturity and
   must comply with certain other conditions.  In particular, the Company
   must obtain an opinion of tax counsel that the defeasance will not result
   in recognition of any gain or loss to Holders for Federal income tax
   purposes.  "U.S. Government Obligations" are direct obligations of the
   United States of America which have the full faith and credit of the
   United States of America pledged for payment and which are not callable at
   the issuer's option, or certificates representing an ownership interest in
   such obligations.  (Section 8.02)

   Regarding the Trustee

          Firstar Trust Company will act as Trustee and Registrar for
   Securities issued under the Unsecured Debt Indenture and, unless otherwise
   indicated in a Prospectus Supplement, the Trustee will also act as
   Transfer Agent and Paying Agent with respect to the Securities.  (Section
   2.03)  The Company may remove the Trustee with or without cause if the
   Company so notifies the Trustee six months in advance and if no Default
   occurs or is continuing during the six-month period.  (Section 7.07)  The
   Trustee is also one of the trustees under the First Mortgage Indenture for
   the Company's First Mortgage Bonds.  

          The Company maintains general checking accounts with several banks
   which are affiliates of the Trustee.  The Company's parent, IEC, has $3.6
   million in lines of credit with Firstar Bank Milwaukee, N.A., an affiliate
   of the Trustee, which are part of $150 million in lines of credit
   maintained by IEC with various banks.  In addition, the Company and IEC
   each maintain short-term borrowing agreements with the Trustee pursuant to
   which the Company and IEC may borrow up to $50 million and $50 million,
   respectively.  Judith D. Pyle, a director of the Company, is a director of
   the Trustee's parent corporation, Firstar Corporation.

                             BOOK-ENTRY ONLY SYSTEM

          The Debentures may be issued initially in the form of one or more
   global securities under a book-entry only system operated by a securities
   depositary.  Unless otherwise specified in the Prospectus Supplement, the
   Depository Trust Company ("DTC") will act as securities depositary for the
   Debentures, which would be registered in the name of CEDE & Co., as
   registered securityholder and nominee for DTC.  Individual purchases of
   Book-Entry Interests (as defined below) in any such Debentures will be
   made in book-entry form.  Purchasers of Book-Entry Interests in such
   Debentures will not receive certificates representing their interests in
   such Debentures.  So long as CEDE & Co., as nominee of DTC, is the
   securityholder, references herein to holders of the Debentures or
   registered owners will mean CEDE & Co., rather than the owners of Book-
   Entry Interests in Debentures.

          DTC is a limited-purpose trust company organized under the New York
   Banking Law, a "banking organization" within the meaning of the New York
   Banking Law, a member of the Federal Reserve System, a "clearing
   corporation" within the meaning of the New York Uniform Commercial Code
   and a "clearing agency" registered pursuant to the provisions of Section
   17A of the Exchange Act.  DTC holds securities deposited by its
   participants (the "DTC Participants") and facilitates the settlement of
   securities transactions among DTC Participants in such securities through
   electronic computerized book-entry changes in accounts of the DTC
   Participants, thereby eliminating the need for physical movement of
   securities certificates.  Direct DTC Participants include securities
   brokers and dealers, banks, trust companies, clearing corporations and
   certain other organizations, some of whom (including, possibly, the
   underwriters with respect to the Debentures), together with the New York
   Stock Exchange, Inc., the American Stock Exchange, Inc. and the National
   Association of Securities Dealers, Inc., own DTC.  Access to the DTC
   system is also available to others such as securities brokers and dealers,
   banks and trust companies that clear through or maintain a custodial
   relationship with a DTC Participant, either directly or indirectly (the
   "Indirect Participants").

          DTC Participants purchasing Book-Entry Interests in any Debentures
   will not receive certificates.  Each DTC Participant will receive a credit
   balance in the records of DTC in the amount of such DTC Participant's
   interest in such Debentures, which will be confirmed in accordance with
   DTC's standard procedures.  The ownership interest of each actual
   purchaser of a Book-Entry Interest in Debentures (the "Book-Entry
   Interests") will be recorded through the records of the DTC Participant or
   through the records of the Indirect Participant.  Owners of Book-Entry
   Interests should receive from the DTC Participant or Indirect Participant
   a written confirmation of their purchase providing details of the Book-
   Entry Interests acquired.  Transfers of Book-Entry Interests will be
   accomplished by book entries made by the DTC Participants or Indirect
   Participants who act on behalf of the owners of Book-Entry Interests. 
   Owners of Book-Entry Interests will not receive certificates representing
   their ownership of Book-Entry Interests with respect to any Debentures
   except as described below upon the resignation of DTC.

          Under the Unsecured Debt Indenture, payments made by the Trustee to
   DTC or its nominee will satisfy the Company's obligations under the
   Unsecured Debt Indenture to the extent of the payments so made.  Owners of
   Book-Entry Interests will not be or be considered by the Company or the
   Trustee to be, and will not have any rights as, holders of Debentures
   under the Unsecured Debt Indenture.

          NEITHER THE COMPANY NOR THE TRUSTEE UNDER THE UNSECURED DEBT
   INDENTURE WILL HAVE ANY RESPONSIBILITY OR OBLIGATION TO ANY DTC
   PARTICIPANT, INDIRECT PARTICIPANT OR ANY OWNER OF A BOOK-ENTRY INTEREST OR
   ANY OTHER PERSON NOT SHOWN ON THE REGISTRATION BOOKS OF SUCH TRUSTEE AS
   BEING A HOLDER OF DEBENTURES WITH RESPECT TO:  (1) ANY DEBENTURES; (2) THE
   ACCURACY OF ANY RECORDS MAINTAINED BY DTC OR ANY DTC PARTICIPANT OR
   INDIRECT PARTICIPANT; (3) THE PAYMENT BY DTC OR ANY DTC PARTICIPANT OR
   INDIRECT PARTICIPANT OF ANY AMOUNT DUE TO ANY OWNER OF A BOOK-ENTRY
   INTEREST IN RESPECT OF THE PRINCIPAL OR REDEMPTION PRICE OF OR INTEREST ON
   SUCH DEBENTURES; (4) THE DELIVERY BY DTC OR ANY DTC PARTICIPANT OR
   INDIRECT PARTICIPANT OF ANY NOTICE TO ANY OWNER OF A BOOK-ENTRY INTEREST
   WHICH IS REQUIRED OR PERMITTED UNDER THE TERMS OF THE UNSECURED DEBT
   INDENTURE TO BE GIVEN TO HOLDERS OF DEBENTURES; (5) THE SELECTION OF THE
   OWNERS OF A BOOK-ENTRY INTEREST TO RECEIVE PAYMENT IN THE EVENT OF ANY
   PARTIAL REDEMPTION OF ANY DEBENTURES; OR (6) ANY CONSENT GIVEN OR OTHER
   ACTION TAKEN BY DTC OR ITS NOMINEE AS HOLDER OF DEBENTURES.

          Principal and redemption price of, and interest payments on,
   Debentures registered in the name of DTC or its nominee will be made to
   DTC or such nominee, as registered owner of such Debentures.  DTC is
   responsible for disbursing such payments to the appropriate DTC
   Participants and such DTC Participants, and any Indirect Participants, are
   in turn responsible for disbursing the same to the owners of Book-Entry
   Interests.  Unless it has reason to believe it will not receive payment,
   DTC's current practice is to credit the accounts of the DTC Participants
   on a payment date in accordance with their respective holdings shown on
   the records of DTC.  Payments by DTC Participants and Indirect
   Participants to owners of Book-Entry Interests will be governed by
   standing instructions and customary practices, as is now the case with
   securities held for the accounts of customers in bearer form or registered
   in "street name," and will be the responsibility of such DTC Participant
   or Indirect Participant and not of DTC, the Company or the Trustee,
   subject to any statutory and regulatory requirements as may be in effect
   from time to time.

          DTC Participants and Indirect Participants carry the "position" of
   the ultimate Book-Entry Interest owner on their records, and will be
   responsible for providing information to the ultimate Book-Entry Interest
   owner as to the Debentures in which the Book-Entry Interest is held, debt
   service payments received, and other information.  Each person for whom a
   DTC Participant or Indirect Participant acquires an interest in
   Debentures, as nominee, may desire to make arrangements with such DTC
   Participant or Indirect Participant to receive a credit balance in the
   records of such DTC Participant or Indirect Participant, to have all
   notices of redemption or other communications to or by DTC which may
   affect such persons forwarded in writing by such DTC Participant or
   Indirect Participant, and to have notification made of all debt service
   payments.

          Purchases, transfers and sales of Book-Entry Interests by the
   ultimate Book-Entry Interest owners may be made through book entries made
   by DTC Participants or Indirect Participants or others who act for the
   ultimate Book-Entry Interest owner.  The Trustee under the Unsecured Debt
   Indenture, the Company and the underwriters, as such, have no role in
   those purchases, transfers or sales.

          Owners of Book-Entry Interests may be charged a sum sufficient to
   cover any tax, fee, or other governmental charge that may be imposed in
   relation to any transfer or exchange of a Book-Entry Interest.

          The Trustee will recognize and treat DTC (or any successor
   securities depositary) or its nominee as the holder of Debentures
   registered in its name or the name of its nominee for all purposes,
   including payment of debt service, notices, enforcement of remedies and
   voting.  Under DTC's current practice, a proxy will be given to the DTC
   Participants holding Book-Entry Interests in Debentures in connection with
   any matter on which holders of such Debentures are asked to vote or give
   their consent.  Crediting of debt service payments and transmittal of
   notices and other communications by DTC to DTC Participants, by DTC
   Participants to Indirect Participants and by DTC Participants and Indirect
   Participants to the ultimate Book-Entry Interest owners are the
   responsibility of those persons and will be handled by arrangements among
   them and are not the responsibility of the Trustee, the Company or any
   underwriter, as such.

          The Trustee, so long as a book-entry system is used for any series
   of Debentures, will send any notice of redemption and any other notices
   required by the Unsecured Debt Indenture to be sent to holders of such
   Debentures only to DTC (or such successor securities depositary) or its
   nominee.  Any failure of DTC to advise any DTC Participant, or of any DTC
   Participant or Indirect Participant to notify the Book-Entry Interest
   owner, of any such notice and its content or effect will not affect the
   validity of the redemption of the Debentures called for redemption, or any
   other action premised on that notice.  In the event of a call for
   redemption, the Trustee's notification to DTC will initiate DTC's standard
   call process, and, in the event of a partial call, its lottery process by
   which the call will be randomly allocated to DTC Participants holding
   positions in the Debentures to be redeemed.  When DTC and DTC Participants
   allocate the call for redemption, the owners of the Book-Entry Interests
   that have been called should be notified by the broker or other person
   responsible for maintaining the records of those interests and
   subsequently credited by that person with the proceeds once such
   Debentures are redeemed.

          The Company, the Trustee and any underwriter or agent cannot and do
   not give any assurances that DTC, DTC Participants or others will
   distribute payments of debt service on Debentures made to DTC or its
   nominee as the registered owner, or any redemption or other notices, to
   the Book-Entry Interest owners, or that they will do so on a timely basis,
   or that DTC will serve and act in the manner described in this Prospectus.

          The Company understands that the current "Rules" applicable to DTC
   and DTC Participants are on file with the Commission, and that the current
   "Procedures" of DTC to be followed in dealing with DTC Participants are on
   file with DTC.

          If DTC is at any time unwilling or unable to continue as
   depositary, and a successor depositary is not appointed by the Company
   within 90 days, the Company will issue individual certificates to owners
   of Book-Entry Interests in exchange for the Debentures held by DTC or its
   nominee, as the case may be.  In such instance, an owner of a Book-Entry
   Interest will be entitled to physical delivery of certificates equal in
   principal amount to such Book-Entry Interest and to have such certificates
   registered in its name.  Individual certificates so issued will be issued
   in denominations of $1,000 or any multiple thereof.

          Neither the Company, the Trustee nor any underwriter makes any
   representation as to the accuracy of the above description of DTC's
   business, organization and procedures, which is based upon information
   furnished by DTC.


                              PLAN OF DISTRIBUTION

          The Company may sell the Debentures in one or more of the following
   ways:  (a) through underwriters or dealers; (b) directly to a limited
   number of purchasers or to a single purchaser; or (c) through agents.  The
   Prospectus Supplement with respect to each series of the Debentures sets
   forth, among other things, the terms of the offering of the Debentures,
   including the name or names of the underwriters, dealers or agents, the
   purchase price of the Debentures and proceeds to the Company from such
   sale, any underwriting discounts and other items constituting
   underwriters' or agents' compensation and any discounts and commissions
   allowed or reallowed or paid to dealers and any registered securities
   exchanges on which the Debentures may be listed.  Any initial public
   offering price and any discounts or concessions allowed or reallowed or
   paid to dealers may be changed from time to time.

          If any series of the Debentures are sold to underwriters or
   dealers, the Prospectus Supplement relating thereto will describe the
   nature of the obligation of the underwriters or dealers to purchase and
   pay for the Debentures.  The Debentures may be offered to the public
   either through an underwriting syndicate represented by Merrill Lynch,
   Pierce, Fenner & Smith Incorporated, Robert W. Baird & Co. Incorporated
   and Legg Mason Wood Walker, Incorporated as underwriters, or directly by
   such firms acting as underwriters.  The underwriters with respect to a
   particular underwritten offering of the Debentures will be named in the
   Prospectus Supplement relating to such offering, and if an underwriting
   syndicate is used, the managing underwriter or underwriters will be set
   forth on the cover of such Prospectus Supplement.  Unless otherwise set
   forth in the Prospectus Supplement, the obligations of underwriters to
   purchase the Debentures will be subject to certain conditions precedent
   and the underwriters will be obligated to purchase all the Debentures if
   any are purchased.  The distribution of the Debentures by the underwriters
   may be effected from time to time in one or more transactions at a fixed
   price or prices, which may be changed, or at market prices prevailing at
   the time of sale, at prices related to such prevailing market prices or at
   negotiated prices.

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

          Underwriters, dealers or agents designated by the Company in
   connection with the distribution of the Debentures may be entitled to
   indemnification by the Company against certain liabilities, including
   liabilities under the Securities Act of 1933, as amended, or to
   contribution with respect to payments which the underwriters or agents may
   be required to make in respect thereof.

          In the event that the Debentures are not listed on a registered
   national securities exchange, certain broker-dealers may make a market in
   the Debentures, but will not be obligated to do so and may discontinue any
   market-making at any time without notice.  No assurance can be given that
   any broker-dealer will make a market in the Debentures or as to the
   liquidity of the trading market for the Debentures, whether or not the
   Debentures are listed on a registered national securities exchange.  The
   Prospectus Supplement with respect to any series of the Debentures will
   state, if known, whether or not any broker-dealer intends to make a market
   in the Debentures.  If no such determination has been made, the Prospectus
   Supplement will so state.

                                 LEGAL OPINIONS

          The validity of the Debentures will be passed upon for the Company
   by Foley & Lardner, Milwaukee, Wisconsin.  Certain legal matters will be
   passed upon for the underwriters, dealers, purchasers or agents by
   Chadbourne & Parke LLP, New York, New York.


                                     EXPERTS

          The consolidated financial statements and schedule of the Company
   at December 31, 1997 and 1996 and for each of the three years in the
   period ending 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
   reports with respect thereto, and are included herein in reliance upon the
   authority of said firm as experts in accounting and auditing in giving
   said reports.

   <PAGE>


        No dealer, salesperson or other person has been authorized to give any
    information or to make any representations other than those contained
    or incorporated by reference in this Prospectus Supplement or the
    Prospectus and, if given or made, such information or representations
    must not be relied upon as having been authorized.  Neither the
    delivery of this Prospectus Supplement or the Prospectus nor any sale
    made hereunder or thereunder shall under any circumstances create any
    implication that there has been no change in the affairs of the Company
    since the date hereof or thereof.  This Prospectus Supplement and the
    Prospectus do not constitute an offer or solicitation by anyone in any
    jurisdiction in which such offer or solicitation is not authorized or
    in which the person making such offer or solicitation is not qualified
    to do so or to anyone to whom it is unlawful to make such offer or
    solicitation.


                           _______________________


                               TABLE OF CONTENTS 

                                                                        Page

                             Prospectus Supplement

    Use of Proceeds . . . . . . . . . . . . . . . . . . . . . . . .      S-2
    Selected Financial Information  . . . . . . . . . . . . . . . .      S-3
    Certain Terms of the Debentures   . . . . . . . . . . . . . . .      S-4
    Underwriting  . . . . . . . . . . . . . . . . . . . . . . . . .      S-5

                                   Prospectus

    Available Information . . . . . . . . . . . . . . . . . . . . .        2
    Incorporation of Certain      
      Documents by Reference  . . . . . . . . . . . . . . . . . . .        2
    The Company   . . . . . . . . . . . . . . . . . . . . . . . . .        3
    Use of Proceeds   . . . . . . . . . . . . . . . . . . . . . . .        4
    Ratios of Earnings to Fixed Charges   . . . . . . . . . . . . .        4
    Description of the Debentures   . . . . . . . . . . . . . . . .        4
    Book-Entry Only System  . . . . . . . . . . . . . . . . . . . .       12
    Plan of Distribution  . . . . . . . . . . . . . . . . . . . . .       15
    Legal Opinions  . . . . . . . . . . . . . . . . . . . . . . . .       16
    Experts . . . . . . . . . . . . . . . . . . . . . . . . . . . .       16




                                  $60,000,000


                                  [WP&L LOGO]


                                ____% Debentures

                             due ________ __, _____






                                   __________

                             PROSPECTUS SUPPLEMENT
                                   __________



                              Merrill Lynch & Co.



                             Robert W. Baird & Co.
                                  Incorporated



                             Legg Mason Wood Walker
                                  Incorporated



                                August   , 1998 



   <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 and other discounts
   and commissions, are, subject to future contingencies, estimated to be as
   follows:

     Securities and Exchange Commission registration
      fee   . . . . . . . . . . . . . . . . . . . . . .        $  17,700 
     Fee of Public Service Commission of Wisconsin  . .            1,000 
     Printing and Engraving Expenses    . . . . . . . .           15,000 
     Fees of Rating Agencies  . . . . . . . . . . . . .           25,000 
     Trustee Fees and Expenses    . . . . . . . . . . .           10,000 
     Accounting Fees and Expenses   . . . . . . . . . .           15,000 
     Legal Fees and Expenses  . . . . . . . . . . . . .           45,000 
     Blue Sky Fees and Expenses   . . . . . . . . . . .            5,000 
     Miscellaneous Expenses   . . . . . . . . . . . . .            6,300 
                                                                 ------- 
          Total   . . . . . . . . . . . . . . . . . . .        $ 140,000 
                                                                 ======= 


   Item 15.    Indemnification of Directors and Officers.

          Pursuant to the provisions of the Wisconsin Business Corporation
   Law and Article VIII of the Registrant's Bylaws, 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 criminal law unless the director or officer had a 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 in (a) through (d) above.

          The indemnification provided by the Wisconsin Business Corporation
   Law and the Registrant's Bylaws is not exclusive of any other rights to
   which a director or officer of the Registrant may be entitled.  The
   Registrant also carries directors' and officers' liability insurance.

          The proposed form of Underwriting Agreement for the Debentures
   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 listed in the accompanying Exhibit Index are filed
   (except where otherwise indicated) as part of this Registration Statement.

   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;

               (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 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 such 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 foregoing
   provisions, 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 Securities Act of 1933 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.



   <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 to the Registration Statement to be signed on its behalf by
   the undersigned, thereunto duly authorized, in the City of Madison, State
   of Wisconsin, on August 24, 1998.

                                 WISCONSIN POWER AND LIGHT COMPANY


                                 By:  /s/ Erroll B. Davis, Jr.
                                      Erroll B. Davis, Jr.
                                      Chief Executive Officer



             Pursuant to the requirements of the Securities Act of 1933, this
   Registration Statement has been signed below by the following persons in
   the capacities and on the dates indicated.


    Signature                      Title                      Date


    /s/ Erroll B. Davis, Jr.  Chief Executive Officer   August 24, 1998
    Erroll B. Davis, Jr.      and Director (Principal
                              Executive Officer)

    /s/ Edward M. Gleason     Vice President-           August 24, 1998
    Edward M. Gleason         Treasurer and Corporate
                              Secretary (Principal
                              Financial Officer)

    /s/ John E. Ebright       Vice President-           August 24, 1998
    John E. Ebright           Controller (Principal
                              Accounting Officer)


    Alan B. Arends*           Director                  August 24, 1998


    Rockne G. Flowers*        Director                  August 24, 1998



    Joyce L. Hanes*           Director                  August 24, 1998


    Lee Liu*                  Director                  August 24, 1998


    Katharine C. Lyall*       Director                  August 24, 1998


    Arnold M. Nemirow*        Director                  August 24, 1998


    Milton E. Neshek*         Director                  August 24, 1998


    Jack R. Newman*           Director                  August 24, 1998


    Judith D. Pyle*           Director                  August 24, 1998



    Robert D. Ray*            Director                  August 24, 1998


    David Q. Reed*            Director                  August 24, 1998


    Robert W. Schlutz*        Director                  August 24, 1998


    Wayne H. Stoppelmoor*     Director                  August 24, 1998


    Anthony R. Weiler*        Director                  August 24, 1998



    *By: /s/ Erroll B. Davis, Jr.        
              Erroll B. Davis, Jr.
              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.

   <PAGE>

                                 EXHIBIT INDEX 


   Exhibit
   Number                   Document Description

   (1)*           Proposed form of Purchase Agreement relating
                  to the Debentures.

   (4.1)          Indenture of Mortgage or Deed of Trust dated
                  August 1, 1941, between the Company and
                  First Wisconsin Trust Company (n/k/a Firstar
                  Trust Company) and George B. Luhman, as
                  Trustees (incorporated by reference to
                  Exhibit 7(a) in File No. 2-6409).

   (4.2)          Supplemental Indenture dated January 1, 1948
                  (incorporated by reference to Second Amended
                  Exhibit 7(b) in File No. 2-7361).

   (4.3)          Supplemental Indenture dated September 1,
                  1948, (incorporated by reference to Amended
                  Exhibit 7(c) in File No. 2-7628).

   (4.4)          Supplemental Indenture dated June 1, 1950
                  (incorporated by reference to Amended
                  Exhibit 7.02 in File No. 2-8462).

   (4.5)          Supplemental Indenture dated April 1, 1951
                  (incorporated by reference to Amended
                  Exhibit 7.02 in File No 2-8882).

   (4.6)          Supplemental Indenture dated April 1, 1952
                  (incorporated by reference to Second Amended
                  Exhibit 4.03 in File No. 2-9526).

   (4.7)          Supplemental Indenture dated September 1,
                  1953 (incorporated by reference to Amended
                  Exhibit 4.03 in File No. 2-10406).

   (4.8)          Supplemental Indenture dated October 1, 1954
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-11130).

   (4.9)          Supplemental Indenture dated March 1, 1959
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-14816).

   (4.10)         Supplemental Indenture dated May 1, 1962
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-20372).

   (4.11)         Supplemental Indenture dated August 1, 1968
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-29738).

   (4.12)         Supplemental Indenture dated June 1, 1969
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-32947).

   (4.13)         Supplemental Indenture dated October 1, 1970
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-38304).

   (4.14)         Supplemental Indenture dated July 1, 1971
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-40802).

   (4.15)         Supplemental Indenture dated April 1, 1974
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-50308).

   (4.16)         Supplemental Indenture dated December 1,
                  1975 (incorporated by reference to Exhibit
                  2.01(a) in File No. 2-57775).

   (4.17)         Supplemental Indenture dated May 1, 1976
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-56036).

   (4.18)         Supplemental Indenture dated May 15, 1978
                  (incorporated by reference to Amended
                  Exhibit 2.02 in File No. 2-61439).

   (4.19)         Supplemental Indenture dated August 1, 1980
                  (incorporated by reference to Exhibit 4.02
                  File No. 2-70534).

   (4.20)         Supplemental Indenture dated January 15,
                  1981 (incorporated by reference to Amended
                  Exhibit 4.03 in File No. 2-70534).

   (4.21)         Supplemental Indenture dated August 1, 1984
                  (incorporated by reference to Exhibit 4.02
                  in File No. 33-2579).

   (4.22)         Supplemental Indenture dated January 15,
                  1986 (incorporated by reference to Amended
                  Exhibit 4.03 in File No. 33-2579).

   (4.23)         Supplemental Indenture dated June 1, 1986
                  (incorporated by reference to Amended
                  Exhibit 4.02 in File No. 33-4961).

   (4.24)         Supplemental Indenture dated August 1, 1988
                  (incorporated by reference to Exhibit 4.24
                  in File No. 33-45726). 

   (4.25)         Supplemental Indenture dated December 1,
                  1990 (incorporated by reference to Exhibit
                  4.25 in File No. 33-45726).

   (4.26)         Supplemental Indenture dated September 1,
                  1991 (incorporated by reference to Exhibit
                  4.26 in File No. 33-45726).

   (4.27)         Supplemental Indenture dated October 1, 1991
                  (incorporated by reference to Exhibit 4.27
                  in File No. 33-45726).

   (4.28)         Supplemental Indenture dated March 1, 1992
                  (incorporated by reference to Exhibit 4.1 to
                  the Company's Form 8-K dated March 9, 1992).

   (4.29)         Supplemental Indenture dated May 1, 1992
                  (incorporated by reference to Exhibit 4.1 to
                  the Company's Form 8-K dated May 12, 1992).

   (4.30)         Supplemental Indenture dated June 1, 1992
                  (incorporated by reference to Exhibit 4.1 to
                  the Company's Form 8-K dated June 29, 1992).

   (4.31)         Supplemental Indenture dated July 1, 1992
                  (incorporated by reference to Exhibit 4.1 to
                  the Company's Form 8-K dated July 20, 1992).

   (4.32)         Indenture, dated as of June 20, 1997,
                  between the Company and Firstar Trust
                  Company, as Trustee, for the Debentures
                  (incorporated by reference to Exhibit 4.33
                  to Amendment No. 2 to the Company's Form S-3
                  Registration Statement [Registration No. 33-
                  60917]).

   (4.33)         Officers' Certificate, dated as of June 25,
                  1997, creating the Company's 7% Debentures
                  due June 15, 2007 (incorporated by reference
                  to Exhibit 4 to the Company's Form 8-K dated
                  June 25, 1997).

   (5)**          Opinion of Foley & Lardner (including
                  consent of counsel).

   (12)           Statement re computation of ratios of
                  earnings to fixed charges.

   (23.1)**       Consent of Arthur Andersen LLP

   (23.2)**       Consent of Foley & Lardner (filed as part of
                  Exhibit (5)).

   (24)**         Powers of attorney.

   (25)**         Form T-1 Statement of Eligibility and
                  Qualification under the Trust Indenture Act
                  of 1939 of Firstar Trust Company relating to
                  the Debentures.

                      
   *         To be filed by amendment to the Registration Statement
             or as an exhibit to a Current Report on Form 8-K.

   **        Previously filed.




                                                                 EXHIBIT (12)


   <TABLE>

                                                  WISCONSIN POWER AND LIGHT COMPANY
                                          COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                                                       (Dollars in thousands)

   <CAPTION>



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

    <S>                                      <C>            <C>           <C>          <C>          <C>          <C>    
    Income before interest expense           $ 89,296       $ 103,841     $113,957     $112,473     $102,643     $96,381

    Add:                                             
         Federal and state income
         taxes                                 30,547          41,839       53,808       45,606       44,727      35,667

         Estimated interest
         component of rental
         payments                               3,363           3,524        4,313        4,666        4,175       4,139
                                              -------         -------      -------      -------      -------     -------
    Earnings, as adjusted                   $ 123,206        $149,204     $172,078     $162,745     $151,545    $136,187
                                              =======         =======      =======      =======      =======     =======
    Fixed charges:

         Interest on bonds                    $32,449        $ 28,964      $26,906      $28,647      $28,796     $28,422

         Other interest expense                 3,643           3,643        4,566        5,174        2,352       3,854

         Estimated interest
         component of rental
         payments                               3,363           3,524        4,313        4,666        4,175       4,139
                                              -------         -------      -------      -------      -------     -------
    Total fixed charges                      $ 39,455         $36,131      $35,785      $38,487      $35,323    $ 36,415
                                              =======         =======      =======      =======      =======     =======

    Ratio of earnings to fixed
      charges                                    3.12            4.13         4.81         4.23         4.29        3.74
                                              =======         =======      =======      =======      =======     =======

   </TABLE>
<PAGE>


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