As filed with the Securities and Exchange Commission on September 18, 2001

                                                       Registration No. 333-
                                                                     333-    -01
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-3
                             REGISTRATION STATEMENT
                                     Under
                           The Securities Act of 1933

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

      WISCONSIN ENERGY CORPORATION                WEC CAPITAL TRUST II
 (Exact name of Registrant as specified  (Exact name of Registrant as specified
            in its charter)                     in its Trust Agreement)
               WISCONSIN                                DELAWARE
    (State or other jurisdiction of         (State or other jurisdiction of
     incorporation or organization)          incorporation or organization)
               39-1391525                              39-6707888
  (I.R.S. Employer Identification No.)    (I.R.S. Employer Identification No.)
        231 West Michigan Street            c/o Wisconsin Energy Corporation
             P. O. Box 2949                     231 West Michigan Street
       Milwaukee, Wisconsin 53201                    P. O. Box 2949
             (414) 221-2345                    Milwaukee, Wisconsin 53201
   (Address, including zip code, and                 (414) 221-2345
               telephone                   (Address, including zip code, and
    number, including area code, of                    telephone
              Registrant's                  number, including area code, of
      principal executive offices)                    Registrant's
                                              principal executive offices)

                                  Jeffrey West
                                   Treasurer
                          Wisconsin Energy Corporation
                            231 West Michigan Street
                           Milwaukee, Wisconsin 53201
                                 (414) 221-2345
           (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

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

                                   Copies to:
           Bruce C. Davidson                          Gary W. Wolf
          Quarles & Brady LLP                   Cahill Gordon & Reindel
       411 East Wisconsin Avenue                     80 Pine Street
       Milwaukee, Wisconsin 53202               New York, New York 10005
             (414) 277-5000                          (212) 701-3600

  Approximate date of commencement of proposed sale to the public: At such
time, or from time to time, after the effective date of this registration
statement as the registrant shall determine, in light of market conditions and
other factors.

  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, 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, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [_]

  If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]

  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [_]

                        CALCULATION OF REGISTRATION FEE

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                                        Proposed       Proposed
 Title of each class of     Amount      maximum         maximum      Amount of
    securities to be        to be    offering price    aggregate    registration
       registered         registered    per unit    offering  price     fee
--------------------------------------------------------------------------------
                                                        
Securities of Wisconsin
 Energy Corporation:        (1)(2)        (3)       $500,000,000(3) $125,000(4)
 Debt Securities........
 Preferred Stock, par
  value $.01 per share..
Preferred Securities of
 WEC Capital Trust II...
Guarantees of Preferred
 Securities of WEC
 Capital Trust II by
 Wisconsin Energy
 Corporation (5)........


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(1) Such indeterminate number or amount of Debt Securities and Preferred Stock
    of Wisconsin Energy Corporation and Preferred Securities of WEC Capital
    Trust II as may from time to time be issued at indeterminate prices. Junior
    Subordinated Debt Securities may be issued and sold to WEC Capital Trust
    II, in which event such Junior Subordinated Debt Securities may later be
    distributed to the holders of Preferred Securities upon a dissolution of
    WEC Capital Trust II and the distribution of the assets thereof. Securities
    registered hereunder (the "Securities") may be sold separately, together or
    as units with other Securities registered hereunder.
(2) Such amount in U.S. dollars or the equivalent thereof in foreign currencies
    or foreign currency units as shall result in an aggregate initial offering
    price for all Securities not to exceed $500,000,000. If any Debt Securities
    are issued at an original issue discount, such greater amount as may result
    in the initial offering price for Securities aggregating $500,000,000. In
    addition, this Registration Statement includes such presently indeterminate
    number of Securities as may be issuable from time to time upon conversion
    or exchange of the Securities being registered hereunder.
(3) Exclusive of any accrued interest on Debt Securities and estimated solely
    for the purpose of calculating the registration fee pursuant to Rule 457(o)
    under the Securities Act. Accordingly, the table does not specify by each
    class information as to the amount to be registered or the proposed maximum
    offering price per unit.
(4) Calculated pursuant to Rule 457(o) under the Securities Act (at the
    statutory rate of .000250 of the maximum aggregate offering price) and paid
    with the filing of this Registration Statement.
(5) Wisconsin Energy Corporation is also registering under this Registration
    Statement all other obligations that it may have with respect to Preferred
    Securities issued by WEC Capital Trust II. No separate consideration will
    be received for any Guarantee or any other such obligations.

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

   The Registrants hereby amend this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrants
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 or until the Registration Statement shall become effective
on such date as the Commission, acting pursuant to said Section 8(a), may
determine.

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                                EXPLANATORY NOTE

   This Registration Statement includes a prospectus to be used in connection
with offerings of (a) preferred stock and debt securities issued by Wisconsin
Energy Corporation, including any junior subordinated debentures issued to WEC
Capital Trust II, (b) preferred securities issued by WEC Capital Trust II, and
(c) guarantees by Wisconsin Energy Corporation of the preferred securities
issued by WEC Capital Trust II. Each offering of securities made under this
Registration Statement will be made pursuant to this prospectus, with the
specifications of the securities offered thereby set forth in an accompanying
prospectus supplement. The prospectus may not be used to consummate sales of
securities unless accompanied by a prospectus supplement.


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+The information in this prospectus is not complete and may be changed. We may +
+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell these securities and it is not soliciting an offer to buy these +
+securities in any state where the offer or sale is not permitted.             +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

PROSPECTUS

                SUBJECT TO COMPLETION, DATED SEPTEMBER 18, 2001

                                  $500,000,000

                          WISCONSIN ENERGY CORPORATION

                                Debt Securities
                                Preferred Stock

                                  -----------

                              WEC CAPITAL TRUST II

                              Preferred Securities
                      Fully and Unconditionally Guaranteed
                             as described herein by
                          Wisconsin Energy Corporation

WISCONSIN ENERGY:

May issue and sell debt securities and preferred stock to the public.

THE WEC TRUST:

  . may issue and sell preferred securities (representing undivided beneficial
    interests in the trust) to the public; in which case it also

  . will issue and sell common securities to Wisconsin Energy; and

  . will use the proceeds from these sales to buy a series of junior
    subordinated debentures from Wisconsin Energy with terms that correspond
    to the preferred securities.

  If a WEC Trust issues and sells trust preferred securities, Wisconsin Energy:

  . will pay principal and interest on the junior subordinated debentures,
    subject to payment on its more senior debt;

  . may choose to distribute these junior subordinated debentures pro-rata to
    the preferred and common securities holders if it dissolves the trust;

  . will fully and unconditionally guarantee the preferred securities on a
    junior subordinated level based on:

    --its obligations to make payments on the corresponding junior
      subordinated debentures;

    --its obligations under the preferred securities guarantee (its payment
      obligations are subject to payment on all of its general liabilities);
      and

    --its obligations under the trust agreement.

We urge you to read this prospectus and the prospectus supplement carefully
before you make your investment decision.

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  Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if
this prospectus is truthful or complete. Any representation to the contrary is
a criminal offense.

                  The date of this prospectus is      , 2001.


                               TABLE OF CONTENTS



                                                                           Page
                                                                           ----
                                                                        
About this Prospectus.....................................................   3
Forward-Looking Statements and Cautionary Factors.........................   3
Wisconsin Energy..........................................................   4
The WEC Trusts............................................................   4
Use of Proceeds...........................................................   6
Ratio of Earnings to Fixed Charges........................................   6
Description of Debt Securities............................................   7
Description of Preferred Securities of WEC Capital Trust II...............  17
Description of Guarantees.................................................  27
Relationship Among the Preferred Securities, the Corresponding Junior
 Subordinated Debentures and the Guarantees...............................  30
Description of Wisconsin Energy Preferred Stock...........................  33
Book-Entry Issuance.......................................................  34
Plan of Distribution......................................................  36
Legal Matters.............................................................  37
Experts...................................................................  37
Where You Can Find More Information.......................................  38


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


                                       2


                             ABOUT THIS PROSPECTUS

   In this prospectus, "we", "us" and "Wisconsin Energy" refer to Wisconsin
Energy Corporation. The terms "trust" and "WEC Trust" refer to WEC Capital
Trust II, which is a Delaware statutory business trust that we have formed to
issue its preferred securities, WEC Capital Trust I, which issued and sold $200
million of its preferred securities in 1999, or similar trusts that we may form
in the future, as the context may require. We may form similar trusts should we
determine to issue and sell trust preferred securities in addition to those
that may be offered by WEC Capital Trust II and those issued and sold
previously by WEC Capital Trust I.

   This prospectus is part of a registration statement that we filed with the
SEC utilizing a "shelf" registration process. Under this shelf process,
Wisconsin Energy or WEC Capital Trust II may issue and sell to the public any
combination of the securities described in this prospectus in one or more
offerings up to a total dollar amount of $500,000,000.

   This prospectus provides you with only a general description of the
securities we or the WEC Trust may issue and sell. Each time we or the trust
issue and sell securities, we will provide a prospectus supplement that will
contain specific information about the particular securities and terms of that
offering. In the prospectus supplement, we will describe

  .  the interest rate, payment dates, maturity and other terms of any debt
     securities that we issue and sell,

  .  the specific designation, number of shares or fractional interests
     therein and any dividend, liquidation, redemption, exchange, voting,
     conversion and other rights, preferences and privileges of any preferred
     stock that we issue and sell, and/or

  .  the rights to periodic cash distributions, payments on liquidation and
     other terms of the trust's preferred securities.

   The prospectus supplement will also describe the proceeds and uses of
proceeds from the securities, together with the names and compensation of the
underwriters through whom the securities are being issued and sold, and other
important considerations for investors. It may also add to, update or change
information contained in this prospectus.

   Unless we say otherwise in the prospectus supplement, we may redeem our debt
securities for cash, or cause the trust to liquidate and give investors our
debt securities in place of the trust's preferred securities.

               FORWARD-LOOKING STATEMENTS AND CAUTIONARY FACTORS

   We have included or may include statements in this prospectus and any
prospectus supplement (including documents incorporated by reference) that
constitute forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995. You will be able to recognize a
forward-looking statement because it contains the words "anticipate,"
"believe," "estimate," "expect," "project," "objective" or a similar expression
to identify it as a forward-looking statement.

   We caution you that any such forward-looking statements are not guarantees
of future performance and involve known and unknown risks, uncertainties and
other factors which may cause our actual results, performance or achievements
to differ materially from the future results, performance or achievements we
have anticipated in such forward-looking statements.

   In addition to the assumptions and other factors referred to specifically in
connection with those statements, factors that could cause our actual results
to differ materially from those contemplated in the forward-looking statements
include factors we have described under the captions "Factors Affecting Results
of Operations" and "Cautionary Factors" in the "Management's Discussion and
Analysis of Financial Condition and Results of Operations" section of our
Annual Report on Form 10-K or under similar captions in the other documents we
have incorporated by reference.

                                       3


                                WISCONSIN ENERGY

   Wisconsin Energy, a Wisconsin corporation, is a diversified holding company
which conducts its operations primarily in three operating segments: a utility
energy segment, a non-utility energy segment and a manufacturing segment. Our
primary subsidiaries are Wisconsin Electric Power Company, Wisconsin Gas
Company and WICOR Industries, Inc.

   Utility Energy Segment: The utility energy segment consists of: Wisconsin
Electric, which serves electric customers in Wisconsin and the Upper Peninsula
of Michigan, gas customers in Wisconsin and steam customers in metro Milwaukee,
Wisconsin; Wisconsin Gas, which serves gas customers in Wisconsin and water
customers in suburban Milwaukee, Wisconsin; and Edison Sault Electric Company,
which serves electric customers in the Upper Peninsula of Michigan.

   Non-Utility Energy Segment: As of January 1, 2001, the non-utility energy
segment consisted primarily of: Wisvest Corporation, which develops, owns and
operates electric generating facilities and invests in other energy-related
entities; WICOR Energy Services Company, which engaged in natural gas
purchasing and marketing as well as energy and price risk management; and
FieldTech, Inc., which provides meter reading and technology services for gas,
electric and water utilities. In December 2000, Wisconsin Energy entered into
an agreement to sell Wisvest's two existing non-utility power plants, located
in the state of Connecticut, which would significantly reduce the size of
current non-utility energy segment operations. The pending sale of these two
plants is subject to various regulatory approvals and other closing conditions.
During April 2001, the operations of WICOR Energy were merged into an
unconsolidated affiliate of Wisconsin Energy. In May 2001, FieldTech was sold
to an unaffiliated third party.

   Manufacturing Segment: The manufacturing segment consists of WICOR
Industries, an intermediary holding company, and its three primary
subsidiaries: Sta-Rite Industries, Inc., SHURflo Pump Manufacturing Co. and
Hypro Corporation, which are manufacturers of pumps, water treatment products
and fluid handling equipment with manufacturing, sales and distribution
facilities in the United States and several other countries.

   Other: Other non-utility operating subsidiaries of Wisconsin Energy include
primarily Minergy Corp., which develops and markets recycling technologies, and
Wispark LLC, which develops and invests in real estate. In May 2000, Wisconsin
Energy announced that it would sell approximately 80% of its portfolio of
Wispark's assets, which is expected to significantly reduce the size of
existing non-utility real estate operations.

   Wisconsin Gas, WICOR Energy, FieldTech and WICOR Industries were acquired by
Wisconsin Energy as a result of the Company's acquisition of WICOR, Inc. on
April 26, 2000. WICOR remains a subsidiary of Wisconsin Energy, functioning as
an intermediary holding company of the historical WICOR companies.

   On January 1, 2001, Wisconsin Electric and Edison Sault, together with other
unaffiliated Wisconsin utilities, transferred their electric transmission
assets, with a net book value of approximately $255 million, to the new
American Transmission Company LLC for a proportionate ownership interest.

   We are an exempt holding company by order of the SEC under Section 3(a)(1)
of the Public Utility Holding Company Act of 1935, as amended. As a result, we
are exempt from the provisions of that Act, other than with respect to certain
acquisitions of securities of a public utility. Our principal executive offices
are located at 231 West Michigan Street, P.O. Box 2949, Milwaukee, Wisconsin
53201. Our telephone number is (414) 221-2345.

                                 THE WEC TRUSTS

   WEC Capital Trust II is a statutory business trust that we have formed under
Delaware law. For each WEC Trust, including that trust, there is a trust
agreement signed by us as depositor, by Bank One Trust Company, National
Association (successor to The First National Bank of Chicago) as property
trustee, by Bank One Delaware, Inc. (formerly First Chicago Delaware Inc.) as
Delaware trustee and by two of our employees

                                       4


as administrative trustees. For each trust there is also a certificate of trust
filed with the Delaware Secretary of State. When we are ready to issue and sell
securities through the trust we amend the trust agreement to read substantially
like the form of amended and restated trust agreement that is filed with the
SEC as an exhibit to the registration statement of which this prospectus is a
part. Each trust agreement will be qualified as an indenture under the Trust
Indenture Act of 1939.

The Issuance and Sale of the Trust Securities

   Each WEC Trust is created solely to:

  .  issue and sell its trust securities (including the preferred securities
     and the common securities), which represent proportionate beneficial
     ownership interests in that WEC Trust and its assets;

  .  use the proceeds from the sale of the trust securities to buy from us a
     series of our junior subordinated debentures, which will be the only
     assets of that WEC Trust;

  .  maintain its status as a grantor trust for federal income tax purposes;
     and

  .  engage in only those other activities necessary or convenient to
     accomplish the other purposes.

Because each of the WEC Trusts' only assets will be junior subordinated
debentures that we issue to it, our payments on those debt securities will be
the only source of funds to be paid to purchasers or owners of its trust
securities. Each of the WEC Trusts is a separate legal entity, so the assets of
one will not be available to satisfy the obligations of any other similar trust
we may create.

   We will acquire and own all of the common securities of each WEC Trust. The
common securities will have an aggregate liquidation amount of at least 3% of
the total capital of each WEC Trust. The remainder, representing up to 97% of
the ownership interests in the WEC Trust, will be preferred securities of the
WEC Trust which may be sold to the public. The common securities and the
preferred securities will have substantially the same terms, including the same
priority of payment, and will receive proportionate payments from the WEC Trust
in respect of distributions and payments upon liquidation, redemption or
otherwise at the same times, with one exception: if we default on the
corresponding junior subordinated debentures that we issue to the WEC Trust and
do not cure the default within the times specified in the indenture governing
our issuance of our junior subordinated debentures, our rights to payments as
holder of the common securities will be subordinated to the rights of the
holders of the preferred securities. See "DESCRIPTION OF PREFERRED SECURITIES
OF WEC CAPITAL TRUST II--Subordination of Common Securities."

   Unless we say otherwise in the applicable prospectus supplement, each WEC
Trust will have a term of approximately 50 years. However, a WEC Trust may
dissolve earlier as provided in the applicable trust agreement and the
prospectus supplement.

   Each WEC Trust's business and affairs will be conducted by its trustees,
whom we will appoint as holder of the common securities. Unless we say
otherwise in the applicable prospectus supplement, the trustees for each WEC
Trust will be:

  .  Bank One Trust Company, National Association, as the property trustee

  .  Bank One Delaware, Inc., as the Delaware trustee

  .  Two of our officers, as individual administrative trustees.

We refer to all of these trustees collectively as the "issuer trustees." Bank
One Trust Company, National Association, as property trustee, will act as sole
indenture trustee under each trust agreement for purposes of compliance with
the Trust Indenture Act. Unless we say otherwise in the applicable prospectus
supplement, Bank One Trust Company, National Association will also act as
trustee under our guarantee agreement relating to the preferred securities. See
"DESCRIPTION OF GUARANTEES" and "DESCRIPTION OF DEBT SECURITIES--Certain
Provisions Relating to Junior Subordinated Debentures Issued to the WEC
Trusts."

                                       5


   As the holder of the common securities of a WEC Trust, we will ordinarily
have the right to appoint, remove or replace the property trustee or the
Delaware trustee for each WEC Trust. However, if we are in default with respect
to the corresponding junior subordinated debentures issued to that WEC Trust
(and we haven't cured that default within the time specified in the indenture),
then the holders of a majority in liquidation amount of that WEC Trust's
outstanding preferred securities will be entitled to appoint, remove or replace
the property trustee and/or the Delaware trustee. In no event will the holders
of the preferred securities have the right to vote to appoint, remove or
replace the administrative trustees; we retain that right exclusively as the
holder of the common securities. The duties and obligations of each issuer
trustee are governed by the applicable trust agreement.

   Pursuant to the indenture and the trust agreement, we promise to pay all
fees and expenses related to each WEC Trust and the offering of the preferred
securities and will pay, directly or indirectly, all ongoing costs, expenses
and liabilities of each WEC Trust, except obligations under the preferred
securities and the common securities.

   While the WEC Trusts have separate financial statements, these financial
statements would not be material to holders of the preferred securities because
the WEC Trusts have no independent operations. They exist solely for the
limited functions summarized above. We will guarantee the preferred securities
as described later in this prospectus.

   The WEC Trusts are treated as Wisconsin Energy's subsidiaries, and the
accounts of the WEC Trusts are included in our financial statements. Currently
the FASB is considering the classification of trust preferred securities within
the balance sheet. Pending clarification from the FASB, the preferred
securities are presented as a separate line item in our balance sheet and
disclosures concerning the preferred securities, the guarantee and the junior
subordinated debentures are included in the notes to the financial statements.
We record distributions paid on the preferred securities as an expense.

   The principal executive office of each WEC Trust is c/o Wisconsin Energy
Corporation, 231 West Michigan Street, P.O. Box 2949, Milwaukee, Wisconsin
53201, and its telephone number is (414) 221-2345.

                                USE OF PROCEEDS

   Each WEC Trust will use all of the proceeds it receives from the sale of its
trust securities (including both the preferred securities and the common
securities) to purchase from us the corresponding junior subordinated
debentures. Our payments on these debentures will provide the funds for the
trust's payments to purchasers of its trust securities. Except as otherwise
described in the applicable prospectus supplement, we intend to use the net
proceeds from the sale of our debt securities (either to the trusts or directly
to the public) or preferred stock to repay borrowings, for investments
(including funding equity contributions to affiliates) and/or for other general
corporate purposes. Pending disposition, we may temporarily invest any funds
not required immediately for those purposes in U.S. Government Securities and
other high quality U.S. securities. We expect to borrow money or sell
securities from time to time, but we cannot predict the precise amounts or
timing of doing so. For current information, look at our current filings with
the SEC. See "WHERE YOU CAN FIND MORE INFORMATION."

                       RATIO OF EARNINGS TO FIXED CHARGES

   Our historical ratios of earnings to fixed charges are described below for
the periods indicated.



                                Six Months   Twelve Months Year Ended December 31,
                                   Ended         Ended     ------------------------
                               June 30, 2001 June 30, 2001 2000 1999 1998 1997 1996
                               ------------- ------------- ---- ---- ---- ---- ----
                                                          
      Ratio of Earnings to
       Fixed Charges..........     2.3x          2.1x      2.0x 2.7x 2.8x 1.7x 4.0x


                                       6


   These computations include us and our subsidiaries. For these ratios,
"earnings" is determined by adding net income (including total allowances for
funds used during construction) plus current and deferred income taxes. "Fixed
charges" consists of interest charges, amortization of debt expenses, amounts
representing the interest factors of nuclear fuel rental expense and for a
long-term power purchase contract accounted for as a capital lease, an amount
equal to the earnings before income taxes that would be required to pay
preferred dividends of wholly owned subsidiaries, and distributions on
preferred securities of a subsidiary trust. The ratios reflect operations of
WICOR, Inc. since April 26, 2000, the date of acquisition.

   As Wisconsin Energy itself did not have any preferred stock outstanding, and
therefore did not pay any preferred stock dividends during the periods
indicated above, the ratio of earnings to combined fixed charges and preference
security dividends is the same as our ratio of earnings to fixed charges.

                         DESCRIPTION OF DEBT SECURITIES

   The debt securities, including any junior subordinated debentures that we
issue to a WEC Trust, will be our direct unsecured general obligations. The
debt securities will be either senior debt securities, subordinated debt
securities or junior subordinated debt securities, including the junior
subordinated debentures that are issued to the WEC Trusts. The debt securities
will be issued in one or more series under the indenture described below
between us and Bank One Trust Company, National Association, as trustee, dated
as of March 15, 1999, and under a securities resolution (which may be in the
form of a resolution or a supplemental indenture) authorizing the particular
series.

   We have summarized selected provisions of the indenture below. The summary
is not complete. The indenture and a form of securities resolution are filed as
exhibits to the registration statement of which this prospectus is a part. The
securities resolution for each series also has been or will be filed or
incorporated by reference as an exhibit to the registration statement. You
should read the indenture and the applicable securities resolution for
provisions that may be important to you. In the summary below, we have included
references to section numbers in the indenture so that you can easily find
those provisions. The particular terms of any debt securities we offer will be
described in the related prospectus supplement, along with any applicable
modifications of or additions to the general terms of the debt securities
described below and in the indenture. For a description of the terms of any
series of debt securities, you should also review both the prospectus
supplement relating to that series and the description of the debt securities
set forth in this prospectus before making an investment decision.

General

   The indenture does not significantly limit our operations. In particular, it
does not:

  .  limit the amount of debt securities that we can issue under the
     indenture;

  .  limit the number of series of debt securities that we can issue from
     time to time;

  .  restrict the total amount of debt that we or our subsidiaries may incur;
     or

  .  contain any covenant or other provision that is specifically intended to
     afford any holder of the debt securities special protection in the event
     of highly leveraged transactions or any other transactions resulting in
     a decline in our ratings or credit quality.

   As of the date of this prospectus, the $206.2 million of 6.85% Junior
Subordinated Debentures due March 31, 2039 that were issued and sold to WEC
Capital Trust I in March 1999 in connection with the issuance by WEC Capital
Trust I of its 6.85% Trust Preferred Securities and the $550 million of 5.875%
Senior Notes due April 1, 2006 and $450 million of 6.50% Senior Notes due April
1, 2011 that we issued and sold to the public in March 2001 are the only debt
securities outstanding under the indenture. The ranking of a series of debt
securities with respect to all of our indebtedness will be established by the
securities resolution creating the series.

                                       7


   Although the indenture permits the issuance of debt securities in other
forms or currencies, the debt securities covered by this prospectus will only
be denominated in U.S. dollars in registered form without coupons, unless
otherwise indicated in the applicable prospectus supplement.

Terms

   A prospectus supplement and a securities resolution relating to the offering
of any series of debt securities will include specific terms relating to the
offering. The terms will include some or all of the following:

  .  the designation, aggregate principal amount, currency or composite
     currency and denominations of the debt securities;

  .  the price at which the debt securities will be issued and, if an index,
     formula or other method is used, the method for determining amounts of
     principal or interest;

  .  the maturity date and other dates, if any, on which the principal of the
     debt securities will be payable;

  .  the interest rate or rates, if any, or method of calculating the
     interest rate or rates which the debt securities will bear;

  .  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;

  .  the manner of paying principal and interest on the debt securities;

  .  the place or places where principal and interest will be payable;

  .  the terms of any mandatory or optional redemption of the debt securities
     by us, including any sinking fund;

  .  the terms of any conversion or exchange right;

  .  the terms of any redemption of debt securities at the option of holders;

  .  any tax indemnity provisions;

  .  if payments of principal or interest may be made in a currency other
     than U.S. Dollars, the manner for determining such payments;

  .  the portion of principal payable upon acceleration of any discounted
     debt security (as described below);

  .  whether and upon what terms debt securities may be defeased (which means
     that we would be discharged from our obligations by depositing
     sufficient cash or government securities to pay the principal, interest,
     any premiums and other sums due to the stated maturity date or a
     redemption date of the debt securities of the series);

  .  whether any events of default or covenants in addition to or instead of
     those set forth in the indenture apply;

  .  provisions for electronic issuance of debt securities or for debt
     securities in uncertificated form;

  .  the ranking of the debt securities, including the relative degree, if
     any, to which the debt securities of such series are subordinated to one
     or more other series of debt securities in right of payment, whether
     outstanding or not;

  .  any provisions relating to extending or shortening the date on which the
     principal and premium, if any, of the debt securities of the series is
     payable;

  .  any provisions relating to the deferral of payment of any interest;

  .  if the series of debt securities is to be issued to a WEC Trust, the
     forms of the related trust agreement and guarantee agreement;

                                       8


  .  the additions or changes, if any, to the indenture with respect to that
     series of debt securities to permit or facilitate the issuance of that
     series of debt securities to a WEC Trust; and

  .  any other terms not inconsistent with the provisions of the indenture,
     including any covenants or other 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 debt securities.
     (Section 2.01)

   We may issue debt securities of any series as registered debt securities,
bearer debt securities or uncertificated debt securities, and in such
denominations as we specify in the securities resolution and prospectus
supplement for the series. (Section 2.01)

   In connection with its original issuance, no bearer debt security will be
offered, sold or delivered to any location in the United States. We may deliver
a bearer debt security in definitive form in connection with its original
issuance only if a certificate in a form we specify to comply with United
States laws and regulations is presented to us. (Section 2.04)

   A holder of registered debt securities may request registration of a
transfer upon surrender of the debt security being transferred at any agency we
maintain for that purpose and upon fulfillment of all other requirements of the
agent. (Sections 2.03 and 2.07)

   We may issue debt securities under the indenture as discounted debt
securities to be offered and sold at a substantial discount from the principal
amount of those debt securities. Special United States federal income tax and
other considerations applicable to discounted debt securities will be described
in the related prospectus supplement. A discounted debt security is a debt
security where the amount of principal due upon acceleration is less than the
stated principal amount. (Sections 1.01 and 2.10)

Conversion and Exchange

   The terms, if any, on which debt securities of any series will be
convertible into or exchangeable for our common stock or other equity or debt
securities, property, cash or obligations or a combination of any of the
foregoing, will be summarized in the prospectus supplement relating to the
series. The terms may include provisions for conversion or exchange, either on
a mandatory basis, at the option of the holder or at our option. (Section 9.01)

Certain Covenants

   Any restrictive covenants which may apply to a particular series of debt
securities will be described in the related prospectus supplement.

Ranking of Debt Securities

   Unless stated otherwise in a prospectus supplement, the debt securities
issued under the indenture will rank equally and ratably with our other
unsecured and unsubordinated debt. The debt securities will not be secured by
any properties or assets and will represent our unsecured debt.

   Because we are a holding company and conduct all of our operations through
subsidiaries, holders of debt securities will generally have a junior position
to claims of creditors of our subsidiaries, including trade creditors, debt
holders, secured creditors, taxing authorities, guarantee holders and any
preferred stockholders. Various financing arrangements and regulatory
requirements impose restrictions on the ability of our utility subsidiaries to
transfer funds to us in the form of cash dividends, loans or advances. Under
Wisconsin law, our utility subsidiaries are prohibited from loaning funds,
either directly or indirectly, to us. The indenture does not limit us or our
subsidiaries if we decide to issue additional debt. Some of our operating
subsidiaries have ongoing corporate debt programs used to finance their
business activities.

                                       9


   As of June 30, 2001, our direct obligations included approximately $0.3
billion of outstanding short-term debt (including short-term debt supported by
multi-year bank back-up credit facilities), $1.0 billion of Senior Notes, and
$206.2 million of our 6.85% Junior Subordinated Debentures due March 31, 2039
that were issued and sold to WEC Capital Trust I in March, 1999 in connection
with its issuance and sale of 8,000,000 of its 6.85% Trust Preferred Securities
(TRUPS(R)). In addition, our utility subsidiaries had approximately $1.9
billion of outstanding long-term debt and $0.2 billion of outstanding short-
term debt, and our non-utility subsidiaries had approximately $0.4 billion of
outstanding long-term debt and $0.3 billion of outstanding short-term debt.
Outstanding preferred stock of Wisconsin Electric as of June 30, 2001 had an
aggregate liquidation preference value of $30.4 million and was entitled to
annual dividends of approximately $1.2 million.

Successor Obligor

   The indenture provides that, unless otherwise specified in the securities
resolution establishing a series of debt securities, we will not consolidate
with or merge into, or transfer all or substantially all of our assets to,
another company, unless:

  .  that company is organized under the laws of the United States or a state
     or is organized under the laws of a foreign jurisdiction and consents to
     the jurisdiction of the courts of the United States or a state;

  .  that company assumes by supplemental indenture all of our obligations
     under the indenture, the debt securities and any coupons;

  .  all required approvals of any regulatory body having jurisdiction over
     the transaction shall have been obtained; and

  .  immediately after the transaction no default exists under the indenture.

   The successor shall be substituted for us as if it had been an original
party to the indenture, securities resolutions and debt securities. Thereafter
the successor may exercise our rights and powers under the indenture, the debt
securities and any coupons, and all of our obligations under those documents
will terminate. (Section 5.01)

Exchange of Debt Securities

   Registered debt securities may be exchanged for an equal principal amount of
registered debt securities of the same series and date of maturity in the
denominations requested by the holders upon surrender of the registered debt
securities at an agency we maintain for that purpose and upon fulfillment of
all other requirements of the agent. (Section 2.07)

Defaults and Remedies

   Unless the securities resolution establishing the series provides for
different events of default, in which event the prospectus supplement will
describe the change, an event of default with respect to a series of debt
securities will occur if:

  .  we default in any payment of interest on any debt securities of that
     series when the payment becomes due and payable and the default
     continues for a period of 60 days;

  .  we default in the payment of the principal and premium, if any, of any
     debt securities of the series when those payments become due and payable
     at maturity or upon redemption, acceleration or otherwise;

  .  we default in the payment or satisfaction of any sinking fund obligation
     with respect to any debt securities of the series as required by the
     securities resolution establishing the series and the default continues
     for a period of 60 days;

                                       10


  .  we default in the performance of any of our other agreements applicable
     to the series and the default continues for 90 days after the notice
     specified below;

  .  pursuant to or within the meaning of any Bankruptcy Law we:

    --commence a voluntary case,

    --consent to the entry of an order for relief against us in an
     involuntary case,

    --consent to the appointment of a custodian for us or for all or
     substantially all of our property, or

    --make a general assignment for the benefit of our creditors;

  .  a court of competent jurisdiction enters an order or decree under any
     Bankruptcy Law that remains unstayed and in effect for 60 days and that:

    --is for relief against us in an involuntary case,

    --appoints a custodian for us or for all or substantially all of our
     property, or

    --orders us to liquidate; or

  .  there occurs any other event of default provided for in such 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)

   A default under the indenture means any event which is, or after notice or
passage of time would be, an event of default under the indenture. A default
under the fourth bullet point above is not an event of default until the
Trustee or the holders of at least 25% in principal amount of the series notify
us of the default and we do not cure the default within the time specified
after receipt of the notice. (Section 6.01)

   If an event of default occurs under the indenture and is continuing on a
series, the trustee by notice to us, or (except as provided in the next
sentence) the holders of at least 25% in principal amount of the series by
notice both to us and to the trustee, may declare the principal of and accrued
interest on all the debt securities of the series to be due and payable
immediately. In the case of a series issued to a WEC Trust, if, upon an event
of default, the trustee or the holders of not less than 25% in aggregate
principal amount of the series fail to declare the principal of all the debt
securities of that series to be immediately due and payable, then the holders
of 25% in aggregate liquidation amount of the preferred securities then
outstanding shall have the right to do so by notice to us and to the trustee.
Discounted debt securities may provide that the amount of principal due upon
acceleration is less than the stated principal amount.

   Except as provided in the next sentence, the holders of a majority in
principal amount of a series of debt securities, by notice to the trustee, may
rescind an acceleration and its consequences if the rescission would not
conflict with any judgment or decree and if all existing events of default on
the series have been cured or waived except nonpayment of principal or interest
that has become due solely because of the acceleration. In the case of a series
of debt securities issued to a WEC Trust, the holders of a majority in
aggregate liquidation amount of the preferred securities then outstanding shall
also have the right to rescind the acceleration and its consequences with
respect to such series, subject to the same conditions set forth above.
(Section 6.02)

   If an event of default occurs and is continuing on a series, the trustee may
pursue any available remedy to collect principal or interest then due on the
series, to enforce the performance of any provision applicable to the series,
or otherwise to protect the rights of the trustee and holders of the series.
(Section 6.03)

   In the case of a series issued to a WEC Trust, any holder of the related
preferred securities of the WEC Trust shall have the right, upon the occurrence
and continuance of an event of default with respect to the series following our
failure to pay timely interest, principal or premium as described above, to sue
us directly. In that

                                       11


lawsuit the holder of the related preferred securities can force us to pay to
the holder the principal of, and premium, if any, and interest on, the debt
securities having a principal amount equal to the aggregate liquidation amount
of the preferred securities held by that holder. (Section 6.06)

   The trustee may require indemnity satisfactory to it before it performs any
duty or exercises any right or power under the indenture or the debt securities
which it reasonably believes may expose it to any loss, liability or expense.
(Section 7.01) With some limitations, holders of a majority in principal amount
of the debt securities of the series may direct the trustee in its exercise of
any trust or power with respect to that series. (Section 6.05) Except in the
case of default in payment on a series, the trustee may withhold notice of any
continuing default if it determines that withholding the notice is in the
interest of holders of the series. (Section 7.04) We are required to furnish
the trustee annually a brief certificate as to our compliance with all
conditions and covenants under the indenture. (Section 4.04)

   The indenture does not have a cross-default provision. Thus, a default by us
on any other debt, including any other series of debt securities, would not
constitute an event of default under the indenture. A securities resolution may
provide for a cross-default provision; in that case the prospectus supplement
will describe the terms of that provision.

Amendments and Waivers

   The indenture and the debt securities or any coupons of the series may be
amended, and any default may be waived. Unless the securities resolution
provides otherwise, in which event the prospectus supplement will describe the
revised provision, we and the trustee may amend the debt securities, the
indenture and any coupons with the written consent of the holders of a majority
in principal amount of the debt securities of all series affected voting as one
class. However, in the case of a series of debt securities issued to a WEC
Trust, we are not permitted to adopt an amendment that adversely affects the
holders of the preferred securities in any material respect, and no termination
of the indenture shall occur, without the prior consent of the holders of not
less than a majority in aggregate liquidation amount of the preferred
securities then outstanding unless and until the principal (and premium, if
any) of the debt securities of that series and all accrued and unpaid interest
thereon have been paid in full. Furthermore, in the case of a series issued to
a WEC Trust, no amendment can be made to the provisions of the indenture
allowing holders of preferred securities to sue directly following our failure
to make timely payments on the debt securities as described above without the
prior consent of the holder of each preferred security then outstanding unless
and until the principal (and premium, if any) of the debt securities of the
series and all accrued and unpaid interest thereon have been paid in full.
(Section 10.02)

   Without the consent of each debt security holder affected, no amendment or
waiver may:

  .  reduce the principal amount of debt securities whose holders must
     consent to an amendment or waiver;

  .  reduce the interest on or change the time for payment of interest on any
     debt security (but this does not affect our right to elect to defer one
     or more payments of interest as described below under "Certain
     Provisions Relating to Junior Subordinated Debentures Issued to the WEC
     Trusts--Option to Extend Interest Payment Date");

  .  change the fixed maturity of any debt security (subject to any right we
     may have retained in the securities resolution and described in the
     prospectus supplement);

  .  reduce the principal of any non-discounted debt security or reduce the
     amount of the principal of any discounted debt security that would be
     due on acceleration thereof;

  .  change the currency in which the principal or interest on a debt
     security is payable;

  .  make any change that materially adversely affects the right to convert
     or exchange any debt security; or

  .  waive any default in payment of interest on or principal of a debt
     security. (Section 10.02)

                                       12


   Without the consent of any debt security holder, we may amend the indenture
or the debt securities:

  .  to cure any ambiguity, omission, defect, or inconsistency;

  .  to provide for the assumption of our obligations to debt security
     holders by the surviving company in the event of a merger or
     consolidation requiring such assumption;

  .  to provide that specific provisions of the indenture shall not apply to
     a series of debt securities not previously issued;

  .  to create a series of debt securities and establish its terms;

  .  to provide for a separate trustee for one or more series of debt
     securities; or

  .  to make any change that does not materially adversely affect the rights
     of any debt security holder. (Section 10.01)

Legal Defeasance and Covenant Defeasance

   Debt securities of a series may be defeased at any time in accordance with
their terms and as set forth in the indenture and described briefly below,
unless the securities resolution establishing the terms of the series otherwise
provides. Any defeasance may terminate all of our obligations (with limited
exceptions) with respect to a series of debt securities and the indenture
("legal defeasance"), or it may terminate only our obligations under any
restrictive covenants which may be applicable to a particular series ("covenant
defeasance").

   We may exercise our legal defeasance option even though we have also
exercised our covenant defeasance option. If we exercise our legal defeasance
option, that series of debt securities may not be accelerated because of an
event of default. If we exercise our covenant defeasance option, that series of
debt securities may not be accelerated by reference to any restrictive
covenants which may be applicable to that particular series. (Section 8.01)

   To exercise either defeasance option as to a series of debt securities, we
must:

  .  irrevocably deposit in trust (the "defeasance trust") with the trustee
     or another trustee money or U.S. government obligations;

  .  deliver a certificate from a nationally recognized firm of independent
     accountants expressing their opinion that the payments of principal and
     interest when due on the deposited U.S. government obligations, without
     reinvestment, plus any deposited money without investment, will provide
     cash at the times and in the amounts necessary to pay the principal and
     interest when due on all debt securities of the series to maturity or
     redemption, as the case may be; and

  .  comply with certain other conditions. In particular, we 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 (a) the United States or
(b) an agency or instrumentality of the United States, the payment of which is
unconditionally guaranteed by the United States, which, in either case (a) or
(b), 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. It also includes
certificates representing an ownership interest in such obligations. (Section
8.02)

Certain Provisions Relating to Junior Subordinated Debentures Issued to the WEC
Trusts

   General. The junior subordinated debentures that we issue to a WEC Trust may
be issued in one or more series under the indenture with terms corresponding to
the terms of a series of preferred securities issued by that WEC Trust.
Concurrently with the issuance of each WEC Trust's preferred securities, the
WEC Trust will

                                       13


invest the proceeds from the sale of the preferred securities and the
consideration we pay for the common securities in a series of corresponding
junior subordinated debentures that we will issue to the WEC Trust.

   Each series of corresponding junior subordinated debentures:

  .  will be unsecured;

  .  will be in the principal amount equal to the aggregate stated
     liquidation amount of the preferred securities and the common securities
     of the WEC Trust; and

  .  will rank equally with all other series of junior subordinated debt
     securities in terms of priority of payment.

   Unless provided otherwise in the prospectus supplement, holders of the
preferred securities issued by a WEC Trust that owns a series of corresponding
junior subordinated debentures will have the rights summarized above in
connection with modifications to the indenture or upon occurrence of a trust
event of default. See "Amendments and Waivers" and "Defaults and Remedies,"
above and "RELATIONSHIP AMONG THE PREFERRED SECURITIES, THE CORRESPONDING
JUNIOR SUBORDINATED DEBENTURES AND THE GUARANTEES--Enforcement Rights of
Holders of Preferred Securities."

   The prospectus supplement will describe specific terms relating to the
offering of the corresponding junior subordinated debentures. See "DESCRIPTION
OF DEBT SECURITIES--Terms."

   Unless otherwise specified in the applicable prospectus supplement, we will
covenant, as to each series of corresponding junior subordinated debentures:

  .  to maintain, directly or indirectly, 100% ownership of the common
     securities of the WEC Trust to which the corresponding junior
     subordinated debentures have been issued (provided that certain
     successors which are permitted pursuant to the indenture may succeed to
     our ownership of the common securities);

  .  not to voluntarily dissolve, wind-up or liquidate any WEC Trust, except:

    --in connection with a distribution of the junior subordinated
     debentures to the holders of the preferred securities in liquidation
     of the WEC Trust; or

    --in connection with certain mergers, consolidations or amalgamations
     permitted by the related trust agreement; and

  .  to use our reasonable efforts, consistent with the terms and provisions
     of the related trust agreement, to cause such WEC Trust to remain
     classified as a grantor trust and not as an association taxable as a
     corporation for United States federal income tax purposes.

For additional covenants relating to payment of expenses of the WEC Trusts, see
"DESCRIPTION OF PREFERRED SECURITIES OF WEC CAPITAL TRUST II--Payment of
Expenses."

   Option to Extend Interest Payment Date. Unless otherwise stated in the
applicable prospectus supplement, we will have the right at any time and from
time to time during the term of any series of corresponding junior subordinated
debentures to defer payments of interest for a specified number of consecutive
interest payment, or extension, periods. No extension period may extend beyond
the maturity date of that series of corresponding junior subordinated
debentures. We may pay at any time all or any portion of the interest accrued
to that point during a deferral period. At the end of the deferral period or at
a redemption date, we will be obligated to pay all interest accrued and unpaid
(together with interest on the unpaid interest to the extent permitted by
applicable law.) United States federal income tax consequences and special
considerations applicable to any corresponding junior subordinated debentures
for which an extension period has been elected will be described in the
applicable prospectus supplement. During any extension period, or while we are
in default, we will be restricted in our ability to make payments or incur
obligations related to our capital stock or debt securities ranking equal to or
below the junior subordinated debentures.

                                       14


   Prior to the termination of any extension period, we may further extend the
interest payment period. However, the deferral period, together with all prior
and further extensions, may not exceed 20 consecutive quarters or extend beyond
the maturity date of the junior subordinated debentures. After the termination
of any deferral period and the payment of all amounts due, we may decide to
begin a new deferral period, subject to the above requirements.

   If the property trustee is the sole holder of the series of junior
subordinated debentures held by the WEC Trust, we will give the administrative
trustee and the property trustee notice of our selection of any deferral period
one business day prior to the earlier of:

  .  the next date distributions on the preferred securities are payable; or

  .  the date the WEC Trust is required to give notice to the New York Stock
     Exchange (or other applicable self-regulatory organization) or to
     holders of the preferred securities of the record date or the date any
     distribution is payable.

If the property trustee is not the sole holder of the series of junior
subordinated debentures, we will give the debenture holders notice of our
selection of any deferral period ten business days prior to the earliest of:

  .  the next interest payment date; or

  .  the date upon which we are required to give notice to the New York Stock
     Exchange (or other applicable self-regulatory organization) or to
     holders of the junior subordinated debentures of the record or payment
     date of any related interest payment.

   Redemption. The junior subordinated debentures and the applicable securities
resolution will provide the terms upon which we can redeem the junior
subordinated debentures at our option, and will specify a date prior to which
we will not be allowed to redeem the junior subordinated debentures, and after
which we will have the right to redeem the junior subordinated debentures, in
whole or in part, upon not less than 30 days nor more than 60 days notice to
the holder of the junior subordinated debentures at a redemption price or
prices stated in the applicable prospectus supplement.

   If the junior subordinated debentures are redeemed only in part, they will
be redeemed pro rata or by lot or by any other method selected by the trustee.
If a partial redemption of the corresponding junior subordinated debentures
would result in delisting of the preferred securities issued by the WEC Trust
from any national securities exchange or other self-regulatory organization on
which the preferred securities are then listed, we will not be permitted to
effect a partial redemption and may only redeem the corresponding junior
subordinated debentures as a whole.

   Except as otherwise specified in the applicable prospectus supplement and
subject to the provisions of the applicable securities resolution, if a Tax
Event (as defined below) or an Investment Company Event (as defined below) in
respect of a WEC Trust occurs and is continuing, we have the option to redeem
the corresponding junior subordinated debentures held by the WEC Trust, in
whole but not in part, at any time within 90 days thereafter. If the applicable
WEC Trust is the holder of all outstanding corresponding junior subordinated
debentures, the proceeds of the redemption will be used by the WEC Trust to
redeem the corresponding preferred securities and common securities in
accordance with their terms.

   "Tax Event" means that the applicable WEC Trust will have received an
opinion of counsel (which may be counsel to us or an affiliate) experienced in
such matters to the effect that, as a result of any

  .  amendment to, or change (including any announced proposed change) in,
     the laws (or any regulations thereunder) of the United States or any
     political subdivision or taxing authority, or

  .  official administrative written decision, pronouncement or action or
     judicial decision interpreting or applying such laws or regulations,

                                       15


in each case which amendment or change is effective or which proposed change,
pronouncement, action or decision is announced on or after the date of issuance
of the applicable series of junior subordinated debentures pursuant to the
applicable securities resolution, there is more than an insubstantial risk
that:

  .  the WEC Trust is, or will be within 90 days of the date of the opinion
     of counsel, subject to United States Federal income tax with respect to
     income received or accrued on the junior subordinated debentures;

  .  interest we pay on the corresponding junior subordinated debentures is
     not, or will not be within 90 days of the date of the opinion of
     counsel, deductible, in whole or in part, for United States Federal
     income tax purposes; or

  .  the WEC Trust is, or will be within 90 days of the date of the opinion
     of counsel, subject to more than a de minimis amount of other taxes,
     duties or other governmental charges.

   "Investment Company Event" means that the applicable WEC Trust will have
received an opinion of counsel experienced in such matters to the effect that,
as a result of the occurrence of a change in law or regulation or a change in
interpretation or application of law or regulation by any legislative body,
court, governmental agency or regulatory authority on or after the date of
original issuance of the preferred securities by the WEC Trust, the WEC Trust
is or will be considered an "investment company" that is required to be
registered under the Investment Company Act of 1940, as amended.

   Restrictions on Certain Payments. Unless otherwise provided in the
applicable prospectus supplement, we will promise, as to each series of junior
subordinated debentures issued to a WEC Trust, that we and our subsidiaries
will not:

  .  declare or pay any dividends or distributions on, or redeem, purchase,
     acquire, or make a liquidation payment with respect to, any of our
     capital stock, or

  .  make any payment of principal, interest or premium, if any, on or repay,
     repurchase or redeem any of our debt securities (including other junior
     subordinated debentures) that rank equally with or junior in interest to
     the junior subordinated debentures, or

  .  make any guarantee payments with respect to any of the debt securities
     of any of our subsidiaries if the guarantee ranks equally with or junior
     in interest to the junior subordinated debentures

other than:

  .  dividends or distributions payable in our common stock;

  .  redemptions or purchases of any rights pursuant to our shareholder
     rights plan, if any, or any successor rights agreement, and the
     declaration of a dividend of rights or the issuance of stock under a
     rights agreement in the future;

  .  payments under any guarantee relating to the preferred securities of a
     WEC Trust;

  .  purchases of common stock related to the issuance of common stock under
     any benefit plans for our directors, officers or employees;

  .  obligations under any dividend reinvestment plan or stock purchase plan;
     and

  .  purchases of fractional interests in shares of our capital stock
     pursuant to the conversion or exchange provisions of a security being
     converted or exchanged for our capital stock.

These restrictions apply only if:

  .  at that time we have actual knowledge that an event has occurred that
     (a) with the giving of notice or the lapse of time, or both, would
     constitute an event of default under the indenture with respect to the
     junior subordinated debentures of that series and (b) we shall not have
     taken reasonable steps to cure the event, or

                                       16


  .  the corresponding junior subordinated debentures are held by a WEC Trust
     which is the issuer of a series of related preferred securities, and we
     are in default with respect to payment of any obligations under the
     guarantee relating to those preferred securities, or

  .  we shall have given notice of our selection of a deferral of interest
     extension period as provided pursuant to the securities resolution with
     respect to the corresponding junior subordinated debentures and shall
     not have rescinded the notice, or the extension period shall be
     continuing.

Regarding the Trustee

   Bank One Trust Company, National Association (successor to The First
National Bank of Chicago) will act as trustee and registrar for debt securities
issued under the indenture and, unless otherwise indicated in a prospectus
supplement, the trustee will also act as transfer agent and paying agent with
respect to the debt securities. (Section 2.03) We may remove the trustee with
or without cause if we notify the trustee three months in advance and if no
default occurs during the three-month period. (Section 7.07) The trustee, in
its individual or any other capacity, may make loans to, accept deposits from,
and perform services for us or our affiliates, and may otherwise deal with us
or our affiliates, as if it were not the trustee.

   Bank One, N.A., an affiliate of the trustee, is a participating lender with
respect to our existing credit agreements for our and Wisconsin Electric's
commercial paper programs and administrative agent for WE's credit agreement
and is a lender and administrative agent for a $75 million credit arrangement
for the Wisconsin Electric Nuclear Fuel Trust. One of our directors is also a
director of the bank and of the bank holding company.

          DESCRIPTION OF PREFERRED SECURITIES OF WEC CAPITAL TRUST II

   The following section describes the general terms and provisions of the
preferred securities of WEC Capital Trust II to which a prospectus supplement
may relate. The particular terms of the preferred securities offered by any WEC
Trust and the extent to which any of these general provisions do not apply to
its preferred securities will be described in the prospectus supplement
relating to that WEC Trust and its preferred securities.

   Pursuant to the terms of the trust agreement for each WEC Trust, the
administrative trustees are authorized to issue the preferred securities and
the common securities on behalf of the WEC Trust. The preferred securities will
represent beneficial ownership interests in the assets of the WEC Trust. The
holders of the preferred securities will be entitled to a preference over
holders of the common securities of the WEC Trust in certain circumstances with
respect to distributions and amounts payable on redemption or liquidation.
Holders of preferred securities will also have certain other benefits as
described in the corresponding trust agreement.

   We have summarized selected provisions of the preferred securities and each
trust agreement below. This summary is not complete. The form of trust
agreement has been filed as an exhibit to the registration statement of which
this prospectus forms a part. You should read the form of trust agreement for
provisions that may be important to you. You should also consider applicable
provisions of the Trust Indenture Act. Each of the WEC Trusts is a legally
separate entity, and the assets of one are not available to satisfy the
obligations of the other.

General

   The preferred securities of a WEC Trust will rank equally, and payments on
the preferred securities will be made pro rata, with the common securities of
that WEC Trust except as described under "--Subordination of Common
Securities." Legal title to the corresponding junior subordinated debentures
will be held by the property trustee in trust for the benefit of the holders of
the related preferred securities and for us as holder of the common securities.
Each guarantee agreement we execute for the benefit of the holders of a WEC
Trust's preferred securities will be a guarantee on a junior subordinated basis
with respect to the related preferred

                                       17


securities but will not guarantee payment of distributions or amounts payable
on redemption or liquidation of the preferred securities when the related WEC
Trust does not have funds available to make such payments. See "DESCRIPTION OF
GUARANTEES."

Distributions

   Distributions on the preferred securities will be cumulative, will
accumulate from the date of original issuance and will be payable on the dates
specified in the applicable prospectus supplement. Except as specified in the
applicable prospectus supplement, in the event that any date on which
distributions are payable on the preferred securities is not a business day,
payment of the distribution will be made on the next succeeding day that is a
business day (without any interest or other payment in respect to the delay),
with the same force and effect as if made on the originally specified date.
However, if the next business day is in the next calendar year, payment of
distributions will be made on the preceding business day. Each date on which
distributions are payable is referred to in this prospectus as a distribution
date.

   A WEC Trust's preferred securities represent beneficial ownership interests
in the assets of that WEC Trust. The distributions on each preferred security
will be payable at a rate specified in the prospectus supplement for that
preferred security. The amount of distributions payable for any period will be
computed on the basis of a 360-day year of twelve 30-day months unless
otherwise specified in the applicable prospectus supplement. Distributions to
which holders of preferred securities are entitled will accumulate additional
distributions at the rate per annum specified in the applicable prospectus
supplement. Distributions on preferred securities as used in this prospectus
includes any additional distributions unless otherwise stated.

   The revenue of each WEC Trust available for distribution to holders of its
preferred securities will be limited to payments under the corresponding junior
subordinated debentures it owns. Each WEC Trust will invest the proceeds from
the issuance and sale of its trust securities in the corresponding junior
subordinated debentures, and it will have no other assets. See "DESCRIPTION OF
DEBT SECURITIES--Certain Provisions Relating to Junior Subordinated Debentures
Issued to the WEC Trusts." If we do not make interest payments on the
corresponding junior subordinated debentures, the property trustee will not
have funds available to pay distributions on the related preferred securities.
We have guaranteed the payment of distributions (if and to the extent the WEC
Trust has funds legally available for the payment of distributions and cash
sufficient to make the payments) on a limited basis as set forth herein under
"DESCRIPTION OF GUARANTEES."

   Distributions on the preferred securities will be payable to the holders as
they appear on the register of the WEC Trust on the relevant record dates,
which, as long as the preferred securities remain in book-entry form, will be
one business day prior to the relevant distribution date. Subject to any
applicable laws and regulations and to the provisions of the applicable trust
agreement, each distribution payment will be made as described under "BOOK-
ENTRY ISSUANCE." In the event any preferred securities are not in book-entry
form, the relevant record date for such preferred securities shall be a date at
least 15 days prior to the relevant distribution date, as specified in the
applicable prospectus supplement.

Payment of Expenses

   Pursuant to the indenture, we have agreed to pay all debts and obligations
(other than distributions on the trust securities) and all costs and expenses
of the WEC Trusts and to pay any and all taxes, duties, assessments or other
governmental charges (other than United States withholding taxes) imposed by
the United States or any other taxing authority. This includes, but is not
limited to, all costs and expenses relating to the organization of the WEC
Trusts, the fees and expenses of the property trustee, the Delaware trustee and
the administrative trustees and all costs and expenses relating to the
operation of the WEC Trusts. As a result, the net amounts received and retained
by a WEC Trust after paying these fees, expenses, debts and obligations will be
equal to the amounts the WEC Trust would have received and retained had no
fees, expenses, debts and obligations been incurred by or imposed on it. Our
promise to pay these obligations is for the benefit of, and

                                       18


shall be enforceable by, any creditor to whom the fees, expenses, debts and
obligations are owed, whether or not the creditor has received notice of the
promise. Any creditor may enforce these obligations directly against us, and we
have agreed to irrevocably waive any right or remedy that would otherwise
require that any creditor take any action against the WEC Trust or any other
person before proceeding against us. We will execute such additional agreements
as may be necessary to give full effect to these promises.

Redemption or Exchange

   If we repay or redeem, in whole or in part, any junior subordinated
debentures that have been issued to a WEC Trust, whether at maturity or
earlier, the proceeds from the repayment or redemption shall be applied by the
property trustee to redeem a like amount of the trust securities. The property
trustee will give not less than 30 nor more than 60 days notice, and the
redemption price will be equal to the sum of:

  .  the aggregate liquidation amount of the trust securities being redeemed;
     plus

  .  accumulated but unpaid distributions on to the redeemed trust securities
     to the date of redemption; plus

  .  the related amount of the premium, if any, that we pay upon the
     concurrent redemption of corresponding junior subordinated debentures.

See "DESCRIPTION OF DEBT SECURITIES--Certain Provisions Relating to Junior
Subordinated Debentures Issued to the WEC Trusts--Redemption."

   If we are repaying or redeeming less than all of any series of junior
subordinated debentures on a redemption date, then the proceeds from the
repayment or redemption shall be allocated to redeem the related trust
securities pro rata. The amount of premium, if any, that we pay to redeem all
or any part of any series of any corresponding junior subordinated debentures
will also be allocated to the redemption pro rata of the related trust
securities.

   We will have the right to redeem any series of junior subordinated
debentures:

  .  subject to the conditions described under "DESCRIPTION OF DEBT
     SECURITIES--Certain Provisions Relating to Junior Subordinated
     Debentures Issued to the WEC Trusts--Redemption"; or

  .  as may be otherwise specified in the applicable prospectus supplement.

   We have the right to dissolve a WEC Trust at any time and, after
satisfaction of any liabilities to creditors of the WEC Trust as provided by
applicable law, to cause the corresponding junior subordinated debentures owned
by the WEC Trust to be distributed to the holders of the related preferred
securities and common securities in liquidation of the WEC Trust.

   If provided in the applicable prospectus supplement, we will have the right
to extend or shorten the maturity of any series of junior subordinated
debentures at the time that we exercise our right to elect to dissolve the
related WEC Trust and cause the corresponding junior subordinated debentures to
be distributed to the holders of the related preferred securities and common
securities in liquidation of the WEC Trust. However, we can extend the maturity
only if the conditions specified in the applicable prospectus supplement are
met at the time the election is made and at the time of the extension.

   After the liquidation date fixed for any distribution of corresponding
junior subordinated debentures to the holders of any series of preferred
securities:

  .  that series of preferred securities will no longer be deemed to be
     outstanding;

  .  The Depository Trust Company (DTC) or its nominee, as the record holder
     of the preferred securities, will receive a registered global
     certificate or certificates representing the corresponding junior
     subordinated debentures to be delivered in the distribution; and

                                       19


  .  any certificates representing that series of preferred securities not
     held by DTC or its nominee will be deemed to represent the corresponding
     junior subordinated debentures having a principal amount equal to the
     stated liquidation amount of that series of preferred securities, and
     bearing accrued and unpaid interest in an amount equal to the accrued
     and unpaid distributions on that series of preferred securities until
     the certificates are presented to the administrative trustees or their
     agent for transfer or reissuance.

   We cannot predict the market prices for the preferred securities or the
corresponding junior subordinated debentures that may be distributed in
exchange for preferred securities. As a result, the preferred securities that
an investor may purchase, or the corresponding junior subordinated debentures
that an investor may receive on dissolution and liquidation of a WEC Trust, may
trade at a lower price than the investor paid to purchase the preferred
securities.

Redemption and Exchange Procedures

   Any preferred securities that are redeemed on any redemption date will
receive the redemption price from the contemporaneous redemption of the
corresponding junior subordinated debentures. Redemptions of the preferred
securities will be made and the redemption price will be payable on each
redemption date only to the extent that the related WEC Trust has funds on hand
available for the payment of such redemption price. See "Subordination of
Common Securities."

   If a WEC Trust gives a notice of redemption in respect of its preferred
securities, then, by 12:00 noon, New York City time, on the redemption date, to
the extent funds are available, the property trustee will deposit irrevocably
with DTC funds sufficient to pay the applicable redemption price and will give
DTC irrevocable instructions and authority to pay the redemption price to the
holders of such preferred securities. See "BOOK-ENTRY ISSUANCE." If the
preferred securities are no longer in book-entry form, the property trustee, to
the extent funds are available, will irrevocably deposit with the paying agent
for the preferred securities funds sufficient to pay the applicable redemption
price and will give the paying agent irrevocable instructions and authority to
pay the redemption price to the holders thereof upon surrender of their
certificates evidencing the preferred securities.

   Nevertheless, distributions payable on or prior to the redemption date for
any preferred securities called for redemption shall be payable to the holders
of such preferred securities on the relevant record dates for the related
distribution dates. If notice of redemption shall have been given and funds
deposited as required, then upon the date of such deposit, all rights of the
holders of the preferred securities called for redemption will cease, except
the right of the holders of the preferred securities to receive the redemption
price, but without interest on the redemption price, and the preferred
securities will cease to be outstanding.

   Except as specified in the applicable prospectus supplement, in the event
that any date fixed for redemption of preferred securities is not a business
day, then payment of the redemption price payable on such date will be made on
the next succeeding day which is a business day (and without any interest or
other payment in respect of any delay). However, if the next business day is in
the next calendar year, the redemption price will be payable on the preceding
business day. In the event that payment of the redemption price in respect of
preferred securities called for redemption is improperly withheld or refused
and not paid either by the WEC Trust or by us pursuant to the guarantee as
described under "DESCRIPTION OF GUARANTEES," then:

  .  distributions on those preferred securities will continue to accrue at
     the then applicable rate, from the redemption date originally
     established by the WEC Trust for those preferred securities to the date
     the redemption price is actually paid; and

  .  the actual payment date will be the date fixed for redemption for
     purposes of calculating the redemption price.

                                       20


   Subject to applicable law (including, without limitation, United States
federal securities law), we or our subsidiaries may at any time and from time
to time purchase outstanding preferred securities by tender, in the open market
or by private agreement.

   Payment of the redemption price on the preferred securities and any
distribution of corresponding junior subordinated debentures to holders of
preferred securities will be made to the applicable record holders thereof as
they appear on the register for the preferred securities on the relevant record
date. Except as provided in the next sentence, the record date will be one
business day prior to the relevant redemption date or liquidation date, as
applicable. However, if any preferred securities are not in book-entry form,
the relevant record date for those preferred securities shall be a date at
least 15 days prior to the redemption date or liquidation date, as applicable,
as specified in the applicable prospectus supplement.

   If less than all of the preferred securities and common securities issued by
a WEC Trust are to be redeemed on a redemption date, then the aggregate
liquidation amount of preferred securities and common securities to be redeemed
shall be allocated pro rata to the preferred securities and the common
securities based upon the relative liquidation amounts of the two classes. The
particular preferred securities to be redeemed shall be selected on a pro rata
basis not more than 60 days prior to the redemption date by the property
trustee from the outstanding preferred securities not previously called for
redemption. The property trustee shall promptly notify the trust registrar in
writing of the preferred securities selected for redemption and, in the case of
any preferred securities selected for partial redemption, the liquidation
amount to be redeemed. For all purposes of each trust agreement, unless the
context otherwise requires, all provisions relating to the redemption of
preferred securities shall relate, in the case of any preferred securities
redeemed or to be redeemed only in part, to the portion of the aggregate
liquidation amount of preferred securities which has been or is to be redeemed.

   Notice of any redemption will be mailed at least 30 days but not more than
60 days before the redemption date to each holder of trust securities to be
redeemed at the holder's registered address. Unless we default in payment of
the redemption price on the corresponding junior subordinated debentures, on
and after the redemption date interest ceases to accrue on the corresponding
junior subordinated debentures or portions thereof (and distributions cease to
accrue on the related preferred securities or portions thereof) called for
redemption.

Subordination of Common Securities

   Payment of distributions on, and the redemption price of, each WEC Trust's
preferred securities and common securities, as applicable, generally shall be
made pro rata based on the liquidation amount of the preferred securities and
of the common securities. However, if on any distribution date or redemption
date an event of default with respect to any corresponding junior subordinated
debenture shall have occurred and be continuing, then:

  .  neither we nor the WEC Trust shall pay any distribution on, or
     redemption price of, any of the WEC Trust's common securities, and
     neither we nor the WEC Trust shall make any other payment on account of
     the redemption, liquidation or other acquisition of such common
     securities, unless

    --all accumulated and unpaid distributions on all of the WEC Trust's
     outstanding preferred securities are paid in cash for all distribution
     periods terminating on or prior to any payment on the common
     securities, and

    --in the case of a payment of the redemption price, the full amount of
     the redemption price on all of the WEC Trust's outstanding preferred
     securities then called for redemption shall have been paid or provided
     for; and

  .  all funds available to the property trustee shall first be applied to
     the payment in full in cash of all distributions on, or redemption price
     of, the WEC Trust's preferred securities then due and payable.

                                       21


   In the case of any event of default with respect to any corresponding junior
subordinated debentures, we (as holder of the WEC Trust's common securities)
will be deemed to have waived any right to act with respect to the event of
default under the applicable trust agreement until the effect of all events of
default with respect to such preferred securities has been cured, waived or
otherwise eliminated. Until any events of default under the applicable trust
agreement with respect to the preferred securities have been cured, waived or
otherwise eliminated, the property trustee is required to act solely on behalf
of the holders of the preferred securities and not on our behalf as holder of
the WEC Trust's common securities, and only the holders of such preferred
securities will have the right to direct the property trustee to act on their
behalf.

Liquidation Distribution upon Dissolution

   Pursuant to each trust agreement, each WEC Trust shall automatically
dissolve upon expiration of its term and shall dissolve on the first to occur
of:

  .  specified events relating to our bankruptcy, dissolution or liquidation;

  .  our written direction to the property trustee, as depositor, to dissolve
     the WEC Trust and distribute the corresponding junior subordinated
     debentures to the holders of the preferred securities in exchange for
     the preferred securities (which direction is optional and wholly within
     our discretion as depositor);

  .  the redemption of all of the WEC Trust's trust securities; and

  .  the entry of an order for the dissolution of the WEC Trust by a court of
     competent jurisdiction.

   If an early dissolution occurs in any manner except by the redemption of all
of the trust securities, then the WEC Trust will be liquidated by the issuer
trustees as expeditiously as the issuer trustees determine to be possible.
Except as provided in the next sentence, the issuer trustees shall distribute
(after satisfaction of any liabilities to creditors of such WEC Trust as
provided by applicable law) to the holders of such trust securities a like
amount of the corresponding junior subordinated debentures. However, if such a
distribution is determined by the property trustee not to be practical, the
holders of the trust securities will be entitled to receive out of the assets
of the WEC Trust available for distribution to holders (after satisfaction of
any liabilities to creditors of the WEC Trust as provided by applicable law) a
liquidation distribution in an amount equal to, in the case of holders of
preferred securities, the aggregate of the liquidation amount plus accrued and
unpaid distributions thereon to the date of payment. If the liquidation
distribution can be paid only in part because the WEC Trust has insufficient
assets available to pay in full the aggregate liquidation distribution, then
the amounts payable directly by the WEC Trust on its preferred securities will
be paid on a pro rata basis.

   As the holder of the WEC Trust's common securities, we will be entitled to
receive distributions upon any liquidation pro rata with the holders of its
preferred securities. However, if an event of default relating to the
corresponding junior subordinated debentures has occurred and is continuing,
the preferred securities will have a priority over the common securities.

Events of Default; Notice

   Any one of the following events constitutes a trust "event of default" under
each trust agreement with respect to the preferred securities issued thereunder
(whatever the reason for the trust event of default):

  .  the occurrence of an event of default with respect to a corresponding
     series of junior subordinated debentures issued under the indenture to
     the trust (see "DESCRIPTION OF DEBT SECURITIES--Defaults and Remedies");
     or

  .  default by the property trustee in the payment of any distribution when
     it becomes due and payable, and continuation of the default for a period
     of 60 days; or

  .  default by the property trustee in the payment of any redemption price
     of any trust security when it becomes due and payable; or

                                       22


  .  default in the performance, or breach, in any material respect, of any
     covenant or warranty of the issuer trustees in the trust agreement
     (other than a default in the payment of any distribution or any
     redemption price as provided above), and continuation of that default or
     breach for a period of 90 days after there has been given, by registered
     or certified mail, to the defaulting issuer trustee or trustees by the
     holders of at least 25% in aggregate liquidation preference of the
     outstanding preferred securities of the applicable WEC Trust, a written
     notice specifying the default or breach and requiring it to be remedied
     and stating that the notice is a "notice of default" under the trust
     agreement; or

  .  the occurrence of specified events of bankruptcy or insolvency with
     respect to the property trustee and our failure to appoint a successor
     property trustee within 60 days.

   Within 90 days after the occurrence of any trust event of default actually
known to the property trustee, the property trustee is required to transmit
notice of the trust event of default to the holders of the WEC Trust's
preferred securities, to the administrative trustees and to us, as depositor,
unless the trust event of default shall have been cured or waived. We and the
administrative trustees are required to file annually with the property trustee
a certificate as to whether or not we each are in compliance with all the
conditions and covenants applicable to us under each trust agreement.

   If an event of default with respect to a corresponding junior subordinated
debenture has occurred and is continuing, the preferred securities shall have a
preference over the common securities upon termination of the WEC Trust as
described above. See "Liquidation Distribution upon Dissolution." The existence
of a trust event of default does not entitle the holders of preferred
securities to cause the redemption of the preferred securities.

Removal of Issuer Trustees

   We as the holder of the common securities may remove an administrative
trustee at any time. Unless an event of default with respect to a corresponding
junior subordinated debenture shall have occurred and be continuing, we as the
holder of the common securities may also remove the property trustee or the
Delaware trustee at any time. If a trust event of default resulting from an
event of default with respect to a corresponding junior subordinated debenture
has occurred and is continuing, the property trustee and the Delaware trustee
may be removed at such time by the holders of a majority in liquidation amount
of the outstanding preferred securities. In no event will the holders of the
preferred securities have the right to vote to appoint, remove or replace the
administrative trustees: that right belongs exclusively to us as the holder of
the common securities. No resignation or removal of an issuer trustee and no
appointment of a successor trustee will be effective until the successor
trustee accepts its appointment in accordance with the provisions of the
applicable trust agreement.

Co-trustees and Separate Property Trustee

   Unless a trust event of default shall have occurred and be continuing, at
any time or times, for the purpose of meeting the legal requirements of the
Trust Indenture Act or of any jurisdiction in which any part of the trust
property may at the time be located, we (as the holder of the common
securities) and the administrative trustees shall have power to appoint one or
more persons either to act as a co-trustee, jointly with the property trustee,
of all or any part of the trust property, or to act as separate trustee of any
such property, in either case with such powers as may be provided in the
instrument of appointment, and to vest in such person or persons in such
capacity any property, title, right or power deemed necessary or desirable,
subject to the provisions of the applicable trust agreement. In case an event
of default with respect to a corresponding junior subordinated debenture has
occurred and is continuing, the property trustee alone will have power to make
such an appointment.

                                       23


Merger or Consolidation of Issuer Trustees

   Any corporation into which the property trustee, the Delaware trustee or any
administrative trustee that is not a natural person may be merged or converted
or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which such trustee shall be a party, or
any corporation succeeding to all or substantially all the corporate trust
business of such trustee, shall be the successor of such trustee under each
trust agreement, provided such corporation shall be otherwise qualified and
eligible.

Mergers, Consolidations, Conversions, Amalgamations or Replacements of the WEC
Trusts

   A WEC Trust may not merge with or into, consolidate, convert into,
amalgamate, or be replaced by, or convey, transfer or lease its properties and
assets substantially as an entirety to any corporation or other person, except
as described below, as described in "Liquidation Distribution upon Dissolution"
or as described in the prospectus supplement with respect to the preferred
securities. A WEC Trust may, at our request, with the consent of the
administrative trustees and without the consent of the property trustee, the
Delaware trustee or the holders of the preferred securities, merge with or
into, consolidate, convert into, amalgamate, or be replaced by or convey,
transfer or lease its properties and assets substantially as an entirety to a
trust organized as such under the laws of any state; provided, that:

  .  the successor entity either (a) expressly assumes all of the obligations
     of the WEC Trust with respect to the preferred securities or (b)
     substitutes for the preferred securities other successor securities
     having substantially the same terms as the preferred securities so long
     as the successor securities rank the same as the preferred securities
     rank in priority with respect to distributions and payments upon
     liquidation, redemption and otherwise;

  .  we expressly appoint a trustee of such successor entity possessing the
     same powers and duties as the property trustee as the holder of the
     corresponding junior subordinated debentures;

  .  the successor securities are listed, or any successor securities will be
     listed upon notification of issuance, on any national securities
     exchange or other organization on which the preferred securities are
     then listed, if any;

  .  the merger, consolidation, conversion, amalgamation, replacement,
     conveyance, transfer or lease does not cause the preferred securities
     (including any successor securities) to be downgraded by a nationally
     recognized statistical rating organization;

  .  the merger, consolidation, conversion, amalgamation, replacement,
     conveyance, transfer or lease does not adversely affect the rights,
     preferences and privileges of the holders of the preferred securities
     (including any successor securities) in any material respect;

  .  the successor entity has a purpose substantially similar to that of the
     WEC Trust;

  .  prior to the merger, consolidation, conversion, amalgamation,
     replacement, conveyance, transfer or lease, we have received an opinion
     from independent counsel to the WEC Trust experienced in such matters to
     the effect that

    --the merger, consolidation, conversion, amalgamation, replacement,
     conveyance, transfer or lease does not adversely affect the rights,
     preferences and privileges of the holders of the preferred securities
     (including any successor securities) in any material respect, and

    --following the merger, consolidation, conversion, amalgamation,
     replacement, conveyance, transfer or lease, neither the WEC Trust nor
     such successor entity will be required to register as an investment
     company under the Investment Company Act; and

  .  we or any permitted successor or assignee owns all of the common
     securities of the successor entity and guarantees the obligations of the
     successor entity under the successor securities at least to the extent
     provided by the guarantee.

                                       24


Notwithstanding the general provisions described above, a WEC Trust shall not,
except with the consent of holders of 100% in liquidation amount of the
preferred securities, merge with or into, consolidate, convert into,
amalgamate, or be replaced by or convey, transfer or lease its properties and
assets substantially as an entirety to any other entity or permit any other
entity to consolidate, amalgamate, merge with or into, or replace it if such
merger, consolidation, conversion, amalgamation, replacement, conveyance,
transfer or lease would cause the WEC Trust or the successor entity to be
classified as other than a grantor trust for United States federal income tax
purposes.

Voting Rights; Amendment of Each Trust Agreement

   The holders of the preferred securities will have only the voting rights
described below and under "DESCRIPTION OF GUARANTEES--Amendments and
Assignment," plus any voting rights required by law.

   Each trust agreement may be amended from time to time by us, the property
trustee and the administrative trustees, without the consent of the holders of
the preferred securities:

  .  to cure any ambiguity, correct or supplement any provisions in the trust
     agreement that may be inconsistent with any other provision, or to
     address matters or questions arising under the trust agreement in a way
     which is consistent with the other provisions of the trust agreement; or

  .  to modify, eliminate or add to any provisions of the trust agreement if
     necessary to ensure that the WEC Trust will be classified for United
     States federal income tax purposes as a grantor trust or to ensure that
     the WEC Trust will not be required to register as an "investment
     company" under the Investment Company Act.

However, in the case of the first clause, the action must not adversely affect
in any material respect the interests of any holder of trust securities. Any
amendment of the trust agreement becomes effective when we give notice of the
amendment to the holders of the trust securities.

   Each trust agreement may be amended by us and the issuer trustees with:

  .  the consent of holders representing not less than a majority (based upon
     liquidation amounts) of the outstanding trust securities; and

  .  receipt by the issuer trustees of an opinion of counsel experienced in
     such matters to the effect that the amendment or the exercise of any
     power granted to the issuer trustees in accordance with the amendment
     will not affect the WEC Trust's status as a grantor trust for United
     States federal income tax purposes or the WEC Trust's exemption from
     status as an "investment company" under the Investment Company Act.

However, without the consent of each holder of trust securities, no amendment
may:

  .  change the amount or timing of any distribution on the trust securities
     or otherwise adversely affect the amount of any distribution required to
     be made in respect of the trust securities as of a specified date; or

  .  restrict the right of a holder of trust securities to sue for the
     enforcement of any distribution payment.

   The property trustee is required to notify each holder of preferred
securities whenever the property trustee is notified of a default with respect
to the corresponding junior subordinated debentures. Furthermore, so long as
any junior subordinated debentures are held by the property trustee, the issuer
trustees are not permitted to:

  .  direct the time, method and place of conducting any proceeding for any
     remedy available to the trustee under the indenture, or execute any
     trust or power conferred on the property trustee with respect to the
     corresponding junior subordinated debentures;

                                       25


  .  waive any past default that is waivable under the indenture governing
     the junior subordinated debentures;

  .  exercise any right to rescind or annul a declaration that the principal
     of all the corresponding junior subordinated debentures shall be due and
     payable; or

  .  give a required consent to any amendment, modification or termination of
     the indenture, the applicable securities resolution or the corresponding
     junior subordinated debentures

unless, in each case, they first obtain the approval of the holders of a
majority in aggregate liquidation amount of all outstanding preferred
securities. However, where the indenture requires the consent of each affected
holder of corresponding junior subordinated debentures, the property trustee
cannot give the consent without first obtaining the consent of each holder of
the related preferred securities. The issuer trustees cannot revoke any action
previously authorized or approved by a vote of the holders of the preferred
securities except by subsequent vote of the holders of the preferred
securities.

   In addition to obtaining approval of the holders of the preferred securities
as described above, the issuer trustees are required to obtain an opinion of
counsel to the effect that the proposed action will not cause the WEC Trust to
be classified as a corporation for United States federal income tax purposes.

   Any required approval of holders of preferred securities may be given either
at a meeting of holders of preferred securities or pursuant to a written
consent. The property trustee must notify record holders of preferred
securities of any meeting in the manner set forth in each trust agreement.

   No vote or consent of the holders of preferred securities will be required
for a WEC Trust to redeem and cancel its preferred securities in accordance
with the applicable trust agreement.

   Whenever holders of preferred securities are entitled to vote or consent
under any of the circumstances described above, neither we nor the issuer
trustees will be permitted to vote. For purposes of any vote or consent, any of
the preferred securities that we own (or that are owned by the issuer trustees
or our affiliates) will be treated as if they were not outstanding.

Payment and Paying Agency

   The depositary for the preferred securities will make payments in respect of
the preferred securities by crediting the relevant accounts at the depositary
on the applicable distribution dates. If any WEC Trust's preferred securities
are not held by the depositary, then the paying agent will mail checks to
registered holders of the preferred securities as their addresses appear on its
Register. Unless otherwise specified in the applicable prospectus supplement,
the paying agent shall initially be the property trustee and any co-paying
agent chosen by the property trustee and acceptable to the administrative
trustees and to us. The paying agent can resign upon 30 days' written notice to
the property trustee and to us. If the property trustee resigns as paying
agent, the administrative trustees will appoint a bank or trust company
acceptable to the administrative trustees and to us to act as paying agent.

Registrar and Transfer Agent

   Unless otherwise specified in the applicable prospectus supplement, the
property trustee will act as registrar and transfer agent for the preferred
securities.

   Each WEC Trust will register transfers of preferred securities without
charge, but will require payment of any tax or other governmental charges that
may be imposed in connection with any transfer or exchange. The WEC Trusts will
not register transfers of their preferred securities after the relevant
preferred securities are called for redemption.

                                       26


Information Concerning the Property Trustee

   The property trustee undertakes to perform only the duties that are
specifically set forth in each trust agreement, other than during the
continuance of a trust event of default. After a trust event of default, the
property trustee is required to exercise the same degree of care and skill as a
prudent person would exercise or use in the conduct of his or her own affairs.
Subject to this provision, the property trustee has no obligation to exercise
any of its powers under the applicable trust agreement at the request of any
holder of preferred securities unless it is offered reasonable indemnity
against the costs, expenses and liabilities that it might incur by doing so. If
no trust event of default has occurred and is continuing and the property
trustee is required to decide between alternative courses of action, construe
ambiguous provisions in the applicable trust agreement or is unsure of the
application of any provision of the applicable trust agreement, then we will
have the right to tell the property trustee which action to take unless the
matter is one on which holders of preferred securities are entitled to vote. If
we don't give any directions, the property trustee will take whatever action it
deems advisable and in the best interests of the holders of the trust
securities. The property trustee will have no liability except for its own bad
faith, negligence or willful misconduct.

Miscellaneous

   The administrative trustees are authorized and directed to operate the WEC
Trusts in such a way that:

  .  no WEC Trust will be:

    --deemed to be an "investment company" required to be registered under
     the Investment Company Act; or

    --classified as an association taxable as a corporation for United
     States federal income tax purposes; and

  .  the corresponding junior subordinated debentures will be treated as our
     indebtedness for United States federal income tax purposes.

We and the administrative trustees are authorized to take any lawful action
(consistent with the certificate of trust of each WEC Trust and each trust
agreement) that we and the administrative trustees determine in our discretion
to be necessary or desirable for these purposes, as long as the action does not
materially and adversely affect the interests of the holders of the related
preferred securities.

   Holders of the preferred securities have no preemptive or similar rights.

   No WEC Trust may borrow money or issue debt or mortgage or pledge any of its
assets.

                           DESCRIPTION OF GUARANTEES

   When the trust securities are issued, we will execute and deliver a
guarantee agreement for the benefit of the holders of the preferred securities.
The guarantee agreement will be qualified as an indenture under the Trust
Indenture Act. Bank One Trust Company, National Association will act as
guarantee trustee under each guarantee for the purposes of compliance with the
Trust Indenture Act, and will hold the guarantee for the benefit of the holders
of the related WEC Trust's preferred securities.

   We have summarized certain provisions of the guarantees below. This summary
is not complete. The form of the guarantee agreement has been filed as an
exhibit to the registration statement of which this prospectus forms a part,
and you should read the guarantee agreement for provisions that may be
important to you. Reference in this summary to preferred securities means that
WEC Trust's preferred securities to which a guarantee relates.

                                       27


General

   We will promise to pay the guarantee payments to the holders of the
preferred securities, as and when due, regardless of any defense, right of set-
off or counterclaim that the WEC Trust may have or assert other than the
defense of payment. The guarantee payments will rank equal to the corresponding
junior subordinated debentures and will be junior and subordinated to our
senior debt and subordinated debt. The guarantee payments include the
following, to the extent not paid by or on behalf of the related WEC Trust:

  .  any accumulated and unpaid distributions required to be paid on the
     preferred securities, but only if and to the extent that the applicable
     WEC Trust has funds on hand available for the distributions at that
     time;

  .  the redemption price with respect to any preferred securities called for
     redemption, if and to the extent that the applicable WEC Trust has funds
     on hand available to pay the redemption price at that time; or

  .  upon a voluntary or involuntary dissolution, winding up or liquidation
     of a WEC Trust (unless the corresponding junior subordinated debentures
     are distributed to the holders of the preferred securities), the lesser
     of:

    --the liquidation distribution; and

    --the amount of assets of the applicable WEC Trust remaining available
     for distribution to holders of preferred securities.

   Our obligation to make a guarantee payment may be satisfied either by our
direct payment of the required amounts to the holders of the applicable
preferred securities or by causing the WEC Trust to pay them.

   Each guarantee will be an irrevocable guarantee on a junior subordinated
basis of the related WEC Trust's obligations under the preferred securities,
but will apply only to the extent that the related WEC Trust has funds
sufficient to make the required payments. The guarantee is a guarantee of
payment, not a guarantee of collection.

   If we do not make interest payments on the corresponding junior subordinated
debentures held by a WEC Trust, the WEC Trust will not be able to pay
distributions on the preferred securities. Each guarantee will rank subordinate
and junior in right of payment to all of our senior indebtedness and
subordinated indebtedness. See "Status of the Guarantees." Also, all of our
consolidated operating assets are owned by our subsidiaries, and most are owned
by regulated utilities. Various financing arrangements and regulatory
requirements impose restrictions on the ability of our utility subsidiaries to
transfer funds to us in the form of cash dividends, loans or advances. Under
Wisconsin law, our utility subsidiaries are prohibited from loaning funds,
either directly or indirectly, to us. We rely on funds obtained from our
subsidiaries to meet our obligations for payment of principal and interest on
our outstanding debt obligations and corporate expenses. Accordingly, our
obligations under the guarantees will be effectively subordinated to all
existing and future liabilities of, and preferred stock issued by, our
subsidiaries and could be affected by regulatory limitations. See "DESCRIPTION
OF DEBT SECURITIES--General" and "Ranking of Debt Securities." Except as
otherwise provided in the applicable prospectus supplement, we and our
subsidiaries are not limited in the amount of secured or unsecured debt that we
may have outstanding. See the prospectus supplement relating to any offering of
preferred securities.

   We have also agreed to guarantee the obligations of the WEC Trusts with
respect to the common securities to the same extent as the guarantee to holders
of the preferred securities. However, if there is an event of default with
respect to a corresponding junior subordinated debenture, holders of preferred
securities will have priority over holders of common securities.

   Our obligations described herein and in any accompanying prospectus
supplement, through the applicable guarantee agreement, the applicable trust
agreement, the corresponding junior subordinated debentures, and the applicable
securities resolution under the indenture, taken together, constitute our full,
irrevocable and

                                       28


unconditional guarantee of payments due on the preferred securities. No single
document standing alone or operating in conjunction with fewer than all of the
other documents constitutes the guarantee. It is only the combined operation
of these documents that has the effect of providing a full, irrevocable and
unconditional guarantee of the WEC Trust's obligations under the preferred
securities. See "THE WEC TRUSTS," "DESCRIPTION OF PREFERRED SECURITIES OF WEC
CAPITAL TRUST II," and "DESCRIPTION OF DEBT SECURITIES--Certain Provisions
Relating to Junior Subordinated Debentures Issued to the WEC Trusts."

Status of the Guarantees

   Each guarantee will constitute our unsecured obligation and will rank
subordinate and junior in right of payment to all of our senior debt and
subordinated debt.

   Each guarantee will rank equally with all other guarantees we issue
relating to preferred securities issued by the WEC Trusts. Each guarantee will
constitute a guarantee of payment and not of collection (i.e., the guaranteed
party may institute a legal proceeding directly against us as the guarantor to
enforce its rights under the guarantee without first suing anyone else). Each
guarantee will be held for the benefit of the holders of the related preferred
securities. Each guarantee will be discharged only by payment of the guarantee
payments in full (to the extent not paid by the WEC Trust) or by distribution
of the corresponding junior subordinated debentures to the holders of the
preferred securities. None of the guarantees places a limitation on the amount
of additional senior indebtedness or subordinated indebtedness that we may
incur. We expect from time to time to incur additional indebtedness
constituting senior indebtedness or subordinated indebtedness.

Amendments and Assignment

   Except with respect to any changes which do not adversely affect the rights
of holders of the related preferred securities in any material respect (in
which case no vote will be required), no guarantee may be amended without the
prior approval of the holders of not less than a majority of the aggregate
liquidation amount of the related outstanding preferred securities. The manner
of obtaining any required approval will be as set forth under "DESCRIPTION OF
PREFERRED SECURITIES OF WEC CAPITAL TRUST II--Voting Rights; Amendment of Each
Trust Agreement." All guarantees and agreements contained in each guarantee
agreement will bind our successors, assigns, receivers, trustees and
representatives and will benefit the holders of the related preferred
securities then outstanding.

Events of Default

   We will be in default under any guarantee agreement if (a) we don't make
required payments or (b) we are notified that we haven't performed some other
obligation and have not cured that failure within 90 days.

   The holders of a majority in aggregate liquidation amount of the related
preferred securities have the right:

  .  to direct the time, method and place of conducting any proceeding for
     any remedy available to the guarantee trustee in respect of the
     guarantee agreement; or

  .  to direct the exercise of any power conferred upon the guarantee trustee
     under the guarantee agreement.

Holders of a majority in aggregate liquidation amount of the related preferred
securities also have the right to waive any past event of default and its
consequences.

   Any holder of the preferred securities may institute a legal proceeding
directly against us to enforce the WEC Trust's rights under the guarantee
agreement without first instituting a legal proceeding against the WEC Trust,
the guarantee trustee or anyone else.

   As guarantor, we are required to file annually with the guarantee trustee a
certificate stating whether or not we are in compliance with all the
conditions and covenants applicable to us under the guarantee agreement.

                                      29


Information Concerning the Guarantee Trustee

   The guarantee trustee promises to perform only the duties that are
specifically set forth in each guarantee agreement, other than during the
occurrence and continuance of a default by us in performance of any guarantee.
After we default and while the default continues, the guarantee trustee must
exercise the same degree of care and skill as a prudent person would exercise
or use in the conduct of his or her own affairs. Subject to this provision, the
guarantee trustee is under no obligation to exercise any of the powers vested
in it by any guarantee agreement at the request of any holder of any preferred
securities unless it is offered reasonable indemnity against the costs,
expenses and liabilities that it might incur by doing so.

Termination of the Guarantees

   Each guarantee will terminate upon full payment of the redemption price of
the related preferred securities, upon full payment of the amounts payable upon
liquidation of the related WEC Trust or upon distribution of corresponding
junior subordinated debentures to the holders of the related preferred
securities. Each guarantee will continue to be effective or will be reinstated,
as the case may be, if at any time any holder of the related preferred
securities must restore payment of any sums paid under the preferred securities
or the guarantee.

Governing Law

   Each guarantee agreement will be governed by and construed in accordance
with the laws of the State of New York.

                  RELATIONSHIP AMONG THE PREFERRED SECURITIES,
                THE CORRESPONDING JUNIOR SUBORDINATED DEBENTURES
                               AND THE GUARANTEES

Full and Unconditional Guarantee

   We irrevocably guarantee payments of distributions and other amounts due on
the preferred securities (to the extent the applicable WEC Trust has funds
available for the payment of the distributions) as and to the extent set forth
under "DESCRIPTION OF GUARANTEES." Taken together, our obligations under each
series of corresponding junior subordinated debentures, the related securities
resolution, the indenture, the related trust agreement and the related
guarantee agreement provide, in the aggregate, a full, irrevocable and
unconditional guarantee of payments of distributions and other amounts due on
the related series of preferred securities. No single document standing alone
or operating in conjunction with fewer than all of the other documents
constitutes the full guarantee. It is only the combined operation of these
documents that has the effect of providing a full, irrevocable and
unconditional guarantee of the WEC Trust's obligations under the preferred
securities.

   If and to the extent that we do not make payments on any series of
corresponding junior subordinated debentures, the WEC Trust will not pay
distributions or other amounts due on its preferred securities. The guarantees
do not cover payment of distributions when the related WEC Trust does not have
sufficient funds to pay the distributions. In that event, the remedy for a
holder of a series of preferred securities is to institute a legal proceeding
directly against us for enforcement of payment of the distributions to such
holder. Our obligations under each guarantee are subordinate and junior in
right of payment to all of our senior indebtedness and subordinated
indebtedness.

Sufficiency of Payments

   As long as all payments are made when due on each series of corresponding
junior subordinated debentures, those payments will be sufficient to cover
distributions and other payments due on the related preferred securities. This
is primarily because:

                                       30


  .  the aggregate principal amount of each series of corresponding junior
     subordinated debentures will be equal to the sum of the aggregate stated
     liquidation amount of the related preferred securities and related
     common securities;

  .  the interest rate and interest and other payment dates on each series of
     corresponding junior subordinated debentures will match the distribution
     rate and distribution and other payment dates for the related preferred
     securities;

  .  we, as borrower, have promised to pay any and all costs, expenses and
     liabilities of each WEC Trust except the WEC Trust's obligations under
     its preferred securities; and

  .  each trust agreement provides that the WEC Trust will not engage in any
     activity that is not consistent with the limited purposes of the WEC
     Trust.

   We have the right to set-off any payment we are otherwise required to make
under the indenture if and to the extent we have already made, or are
concurrently making, a payment under the related guarantee agreement.

Enforcement Rights of Holders of Preferred Securities

   A holder of any preferred security may institute a legal proceeding directly
against us to enforce its rights under the related guarantee agreement without
first instituting a legal proceeding against the guarantee trustee, the related
WEC Trust or anyone else.

   Our default or event of default under any other senior or subordinated
indebtedness would not necessarily constitute a trust event of default.
However, in the event of payment defaults under, or acceleration of, our senior
or subordinated indebtedness, the subordination provisions of the applicable
securities resolution will provide that no payments may be made in respect of
the corresponding junior subordinated debentures until the senior or
subordinated indebtedness has been paid in full or any payment default
thereunder has been cured or waived. Our failure to make required payments on
any series of corresponding junior subordinated debentures would constitute a
trust event of default.

Limited Purpose of WEC Trusts

   Each WEC Trust's preferred securities evidence undivided beneficial
ownership interests in the assets of that WEC Trust, and each WEC Trust exists
for the sole purposes of issuing its preferred securities and common
securities, investing the proceeds in corresponding junior subordinated
debentures and engaging in only those other activities necessary, convenient or
incidental to those purposes. A principal difference between the rights of a
holder of a preferred security and a holder of a corresponding junior
subordinated debenture is that a holder of a junior subordinated debenture is
entitled to receive from us the principal amount of and interest accrued on
corresponding junior subordinated debentures held, while a holder of preferred
securities is entitled to receive distributions from the WEC Trust (or from us
under the applicable guarantee agreement) if and to the extent the WEC Trust
has funds available for the payment of the distributions.

Rights Upon Dissolution

   Upon any voluntary or involuntary dissolution of any WEC Trust involving the
liquidation of the corresponding junior subordinated debentures, the holders of
the related preferred securities will be entitled to receive the liquidation
distribution in cash, out of assets of the WEC Trust (and after satisfaction of
creditors of the WEC Trust as provided by applicable law). See "DESCRIPTION OF
PREFERRED SECURITIES OF WEC CAPITAL TRUST II--Liquidation Distribution upon
Dissolution." If we become subject to any voluntary or involuntary liquidation
or bankruptcy, the property trustee, as holder of the corresponding junior
subordinated debentures, would be one of our junior subordinated creditors. The
property trustee would be subordinated in right of payment to all of our senior
indebtedness and subordinated indebtedness, but it would

                                       31


be entitled to receive payment in full of principal and interest before our
stockholders receive payments or distributions. We are the guarantor under each
guarantee agreement and pursuant to the indenture, as borrower, have agreed to
pay all costs, expenses and liabilities of each WEC Trust (other than the WEC
Trust's obligations to the holders of its preferred securities). Accordingly,
in the event of our liquidation or bankruptcy the positions of a holder of
preferred securities and of a holder of corresponding junior subordinated
debentures are expected to be substantially the same relative to our other
creditors and to our stockholders.

                                       32


                DESCRIPTION OF WISCONSIN ENERGY PREFERRED STOCK

   As of the date of this prospectus, the authorized capital stock of Wisconsin
Energy consisted of 325,000,000 shares of common stock, $.01 par value per
share, of which 116,951,770 shares were outstanding on August 31, 2001, and
15,000,000 shares of preferred stock, $.01 par value per share, of which none
were outstanding.

   Under the Wisconsin Energy articles of incorporation, subject to any
approval of the SEC which may be required under the Public Utility Holding
Company Act of 1935 should Wisconsin Energy become a registered holding company
under that Act, the Wisconsin Energy board is authorized to divide the
Wisconsin Energy preferred stock into series, to issue shares of any series
and, within the limitations set forth in the Wisconsin Energy articles or
prescribed by law, to fix and determine the relative rights and preferences of
the shares of any series so established, including the dividend rate,
redemption price and terms, amount payable upon liquidation, and any sinking
fund provisions, conversion privileges and voting rights.

   This summary highlights selected information about the preferred stock that
we may issue; it may not contain all of the information that is important to
you. We encourage you to read our articles of incorporation and bylaws and the
articles of amendment creating any particular series of preferred stock because
they, and not this summary, along with the relevant provisions of the Wisconsin
Business Corporation Law, will define the rights of holders of preferred stock.
Our articles of incorporation and bylaws are filed as exhibits to the
registration statement of which this prospectus is a part, and we will file or
incorporate by reference as an exhibit to the registration statement any
articles of amendment creating a series of preferred stock. See "Where You Can
Find More Information" for information on how to obtain copies of these
documents.

   The specific terms of any preferred stock proposed to be sold under this
prospectus and an attached prospectus supplement will be described in the
prospectus supplement. The terms of the offered preferred stock may differ from
the terms set forth below if so indicated in the prospectus supplement.

   Unless otherwise specified in the prospectus supplement relating to a
particular series of preferred stock offered hereunder, each series of
preferred stock will rank on a parity as to dividends and distribution of
assets upon liquidation and in all other respects with all other series of
preferred stock. The preferred stock will, when issued, be fully paid and
nonassessable, and unless otherwise specified, holders of preferred stock will
have no preemptive rights. Shareholders are subject to potential personal
liability under section 180.0622(2)(b) of the Wisconsin Business Corporation
Law, as judicially interpreted, for debts owing to employees of the company for
services performed for the company, but not exceeding six months' service in
any one case.

   You should read the prospectus supplement for the terms of any series of
preferred stock offered, including the following:

  .  the designation of the series;

  .  the number of shares of the preferred stock offered, the liquidation
     preference per share and the offering price per share of the preferred
     stock;

  .  the dividend rate(s), period(s), and/or payment date(s) or method(s) of
     calculating such rates, periods or dates applicable to that series of
     preferred stock;

  .  the date from which dividends on the preferred stock will accumulate, if
     applicable;

  .  the liquidation rights of the preferred stock;

  .  the procedures for auction or remarketing, if any, of the preferred
     stock;

  .  the sinking fund provisions, if applicable, for the preferred stock;

  .  the redemption provisions, if applicable, for the preferred stock;

  .  whether the preferred stock will be convertible into or exchangeable for
     other securities and, if so, the terms and conditions of conversion or
     exchange, including the conversion price or exchange ratio and the
     conversion or exchange period, or the method of determining these
     things;

                                       33


  .  whether the preferred stock will have voting rights and the terms of the
     voting rights, if any;

  .  whether the preferred stock will be listed on any securities exchange;

  .  whether the preferred stock will be issued with any other securities
     and, if so, the amount and terms of these other securities; and

  .  any other specific terms, preferences or rights of, or limitations or
     restrictions on, the preferred stock.

   The applicable prospectus supplement will also contain a discussion of any
material United States federal income tax considerations relevant to the
purchase and ownership of preferred stock offered by the prospectus supplement.

                              BOOK-ENTRY ISSUANCE

   The debt securities, preferred securities and corresponding junior
subordinated debentures of a series and Wisconsin Energy preferred stock 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, the depositary identified in the
applicable prospectus supplement. The depositary will be DTC unless otherwise
indicated in the applicable prospectus supplement. Book-entry securities may be
issued only in fully registered form and in either temporary or permanent form.
Unless and until it is exchanged for the individual securities that it
represents, a book-entry security may not be transferred except as a whole to a
nominee of the depositary or to a successor depositary or any nominee of the
successor.

   DTC has advised us as follows: DTC is a limited-purpose trust company
organized under the laws of the State of New York, 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 was created to hold
securities of institutions that have accounts with DTC ("participants") and to
facilitate the clearance and settlement of securities transactions among its
participants in such securities through electronic book-entry changes in
accounts of the participants, thereby eliminating the need for physical
movement of securities certificates. DTC's participants include securities
brokers and dealers (which may include the initial purchasers), banks, trust
companies, clearing corporations and certain other organizations. Access to
DTC's book-entry system is also available to others such as banks, brokers,
dealers and trust companies (collectively, the "indirect participants") that
clear through or maintain a custodial relationship with a participant, whether
directly or indirectly. The rules applicable to DTC and its participants are on
file with the SEC.

   We expect that pursuant to procedures established by DTC, upon the deposit
of one or more global securities with DTC, DTC will credit, on its book-entry
registration and transfer system, the ownership interest represented by such
global security to the accounts of participants. The accounts to be credited
shall be designated by the initial purchaser. Ownership of beneficial interests
in the global securities will be limited to participants or persons that may
hold interests through participants. Ownership of beneficial interests in the
global securities will be shown on, and the transfer of those ownership
interests will be effected only through, records maintained by DTC (with
respect to participants' interests), the participants and the indirect
participants (with respect to the owners of beneficial interests in the global
securities other than participants). The laws of some jurisdictions may require
that certain purchasers of securities take physical delivery of such securities
in definitive form. Such limits and laws may impair the ability to transfer or
pledge beneficial interests in the global securities.

   So long as DTC, or its nominee, is the registered owner or holder of a
global security, DTC or such nominee, as the case may be, will be considered
the sole legal owner and holder of any related debt securities, preferred
securities and corresponding junior subordinated debentures of a series of
preferred stock represented by the global security for all purposes under the
indenture and the securities. In addition, as a beneficial owner of an interest
in a global security, you will not be able to transfer that interest except in
accordance with the

                                       34


applicable procedures of DTC. Except as set forth below, as an owner of a
beneficial interest in a global security, you will not be entitled to have the
underlying debt securities, preferred securities or corresponding junior
subordinated debentures or preferred stock that are represented by the global
security registered in your name, will not receive or be entitled to receive
physical delivery of certificated debt securities, preferred securities or
corresponding junior subordinated debentures or preferred stock and will not be
considered to be the owner or holder of any debt securities, preferred
securities or corresponding junior subordinated debentures or preferred stock
under the global security. We understand that under existing industry practice,
in the event an owner of a beneficial interest in a global security desires to
take any action that DTC, as the holder of the global security, is entitled to
take, DTC would authorize the participants to take the action, and the
participants would authorize beneficial owners owning through the participants
to take the action or would otherwise act upon the instructions of beneficial
owners owning through them.

   Transfers between participants in DTC will be effected in the ordinary way
in accordance with DTC rules and will be settled in same-day funds.

   DTC has advised us that it will take any action permitted to be taken by a
holder of interests in a global security only at the direction of one or more
participants to whose account the DTC interests in the global security is
credited and only in respect of such portion of the aggregate ownership
interest in the global security as to which the participant or participants has
or have given the direction.

   We and the WEC Trusts expect that conveyance of notices and other
communications by DTC to direct participants, by direct participants to
indirect participants, and by direct participants and indirect participants to
Beneficial Owners and the voting rights of direct participants, indirect
participants and Beneficial Owners will be governed by arrangements among them,
subject to any statutory or regulatory requirements as may be in effect from
time to time.

   Redemption notices will be sent to DTC's partnership nominee, Cede & Co., as
the registered holder of the book-entry securities.

   As long as the book-entry securities are held by DTC or its nominee and DTC
continues to make its same-day funds settlement system available to us, all
payments on the book-entry securities (other than distribution payments on the
preferred securities or corresponding junior subordinated debentures) will be
made by us in immediately available funds to DTC. Distribution payments on the
preferred securities or the corresponding junior subordinated debentures will
be made by the relevant trustee to DTC. We and the WEC Trusts have been advised
that DTC's practice is to credit direct participants' accounts on the relevant
payment date in accordance with their respective holdings shown on DTC's
records unless DTC has reason to believe that it will not receive payments on
such payment date. Payments by participants to Beneficial Owners will be
governed by standing instructions and customary practices and will be the
responsibility of such participant and not of DTC, the relevant trustee, the
WEC Trust (as applicable) or us, subject to any statutory or regulatory
requirements as may be in effect from time to time. Payment on book-entry
securities to DTC is our responsibility or the responsibility of the relevant
trustee (as applicable), disbursement of such payments to direct participants
is the responsibility of DTC and disbursements of such payments to the
Beneficial Owners is the responsibility of direct and indirect participants.

   Unless otherwise specified in the applicable prospectus supplement, if a
depositary for a series of preferred securities or preferred stock is at any
time unwilling, unable or ineligible to continue as depositary and we do not
appoint a successor depositary within 90 days, we will issue individual
preferred securities of such series or preferred stock in exchange for the
global security representing that series of preferred securities or preferred
stock. In addition, we may at any time and in our sole discretion, subject to
any limitations described in the prospectus supplement relating to the
preferred securities or preferred stock, determine not to have any preferred
securities of a series or preferred stock represented by one or more global
securities and, in that event, will issue individual preferred securities or
preferred stock of that series in exchange for the global security or
securities representing that series of preferred securities or preferred stock.
Further, if we so specify with respect to preferred securities or preferred
stock of a series, an owner of a beneficial interest in a global security
representing preferred securities or preferred stock of that series may, on
terms acceptable to us, the

                                       35


property trustee and the depositary for such global security, receive
individual preferred securities or preferred stock of that series in exchange
for that owner's beneficial interests, subject to any limitations described in
the prospectus supplement relating to those preferred securities or preferred
stock. In that instance, a Beneficial Owner in the global security will be
entitled to physical delivery of individual preferred securities or preferred
stock of the series represented by the global security equal in liquidation
amount to such beneficial interest with respect to preferred securities and
equal to the number of shares with respect to preferred stock and to have such
preferred securities or preferred stock registered in its name. Individual
preferred securities or preferred stock of the series so issued will be issued
in the denominations set forth in the related prospectus supplement.

   DTC may discontinue providing its services as securities depositary with
respect to debt securities at any time by giving reasonable notice to us or the
indenture trustee. Under those circumstances, if we do not appoint a successor
depositary within 90 days, we will issue individual definitive debt securities
in exchange for all the global securities representing the debt securities. In
addition, we may at any time and in our sole discretion determine not to have
the debt securities represented by global securities and, in that event, will
issue individual definitive debt securities in exchange for all the global
securities representing the debt securities. Individual definitive debt
securities so issued will be issued in denominations of $1,000 and any larger
amount that is an integral multiple of $1,000 and registered in such names as
DTC shall direct.

   If the WEC Trust issues certificated preferred securities, they will be
registered in the name of the security holder. The preferred securities may be
transferred or exchanged, based on administrative procedures in the trust
agreement, without the payment of any service charge (other than any tax or
other governmental charge) by contacting the registrar and transfer agent, Bank
One Trust Company, National Association, 1 Bank One Plaza, Suite IL1-0126,
Chicago, Illinois 60670-0126.

   Distribution payments will be made by check if the WEC Trust issues
certificated preferred securities. Payment of the redemption price or
liquidation amount will be made in immediately available funds when you
surrender the preferred security.

   The information in this section concerning DTC and DTC's book-entry system
has been obtained from sources that we and the WEC Trusts believe to be
accurate, but we and the WEC Trusts assume no responsibility for the accuracy
thereof. Neither we nor the WEC Trusts have any responsibility for the
performance by DTC or its participants of their respective obligations as
described herein or under the rules and procedures governing their respective
operations.

                              PLAN OF DISTRIBUTION

   We and/or any WEC Trust may sell the securities covered by this prospectus
in any one or more of the following ways from time to time: (a) to or through
underwriters or dealers; (b) directly to one or more purchasers; (c) through
agents; (d) through competitive bidding; or (e) any combination of the above.
The prospectus supplement will set forth with respect to the securities being
offered thereby the terms of the offering of those securities, including the
name or names of any underwriters, the purchase price of those securities and
the proceeds to us and/or a WEC Trust from such sale, any underwriting
discounts and other items constituting underwriters' compensation, any initial
public offering price, any discounts or concessions allowed or reallowed or
paid to dealers, and any securities exchange on which those securities may be
listed. Only underwriters so named in the applicable prospectus supplement are
deemed to be underwriters in connection with the securities offered thereby.

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

                                       36


described in the applicable prospectus supplement if any of those securities
are purchased. Any initial public offering price and any discounts or
concessions allowed or reallowed or paid to dealers may be changed from time to
time.

   Securities may also be offered and sold, if so indicated in the prospectus
supplement, in connection with a remarketing upon their purchase, in accordance
with a redemption or repayment pursuant to their terms, by one or more firms
("remarketing firms") acting as principals for their own accounts or as agents
for us and/or an applicable WEC Trust. Any remarketing firm will be identified
and the terms of its agreement, if any, with us and its compensation will be
described in the prospectus supplement. Remarketing firms may be deemed to be
underwriters in connection with the securities remarketed thereby.

   Securities may also be sold directly by us and/or a WEC Trust or through
agents designated by us from time to time. Any agent involved in the offering
and sale of the securities in respect of which this prospectus is delivered
will be named, and any commissions payable by us and/or a WEC Trust to such
agent will be set forth, in the prospectus supplement. Unless otherwise
indicated in the prospectus supplement, any such agent will be acting on a best
efforts basis for the period of its appointment.

   If so indicated in the prospectus supplement, we and/or a WEC Trust will
authorize agents, underwriters or dealers to solicit offers by certain
institutional investors to purchase securities providing for payment and
delivery on a future date specified in the prospectus supplement. There may be
limitations on the minimum amount which may be purchased by any such
institutional investor or on the portion of the aggregate principal amount of
the particular securities which may be sold pursuant to such arrangements.
Institutional investors to which such offers may be made, when authorized,
include commercial and savings banks, insurance companies, pension funds,
investment companies, educational and charitable institutions and such other
institutions as may be approved by us and/or a WEC Trust. The obligations of
any such purchasers pursuant to such delayed delivery and payment arrangements
will not be subject to any conditions except (a) the purchase by an institution
of the particular securities shall not at the time of delivery be prohibited
under the laws of any jurisdiction in the United States to which such
institution is subject, and (b) if the particular securities are being sold to
underwriters, we and/or a WEC Trust shall have sold to such underwriters all of
those securities other than the securities covered by such arrangements.
Underwriters will not have any responsibility in respect of the validity of
such arrangements or the performance by us or such institutional investors
thereunder.

   If any underwriter or any selling group member intends to engage in
stabilizing, syndicate short covering transactions, penalty bids or any other
transaction in connection with the offering of securities that may stabilize,
maintain, or otherwise affect the price of those securities, such intention and
a description of such transactions will be described in the prospectus
supplement.

   Agents and underwriters may be entitled under agreements entered into with
us and/or the applicable WEC Trust to indemnification by us against certain
civil liabilities, including liabilities under the Securities Act of 1933, or
to contribution with respect to payments which the agents or underwriters may
be required to make in respect thereof. Agents and underwriters may engage in
transactions with, or perform services for, us and our subsidiaries in the
ordinary course of business.

                                 LEGAL MATTERS

   Unless otherwise indicated in the applicable prospectus supplements, certain
legal matters in connection with the securities will be passed upon (a) for us
by Quarles & Brady LLP, Milwaukee, Wisconsin, our legal counsel, (b) for the
WEC Trusts (with respect to the validity of the preferred securities under
Delaware law) by special Delaware counsel to us and the WEC Trusts named in the
prospectus supplement relating to the preferred securities, and (c) for any
underwriters by Cahill Gordon & Reindel, New York, New York.

                                    EXPERTS

   The financial statements of Wisconsin Energy Corporation incorporated in
this prospectus by reference to the Annual Report on Form 10-K for the year
ended December 31, 2000 have been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.


                                       37


                      WHERE YOU CAN FIND MORE INFORMATION

   We file annual, quarterly and special reports, proxy statements and other
information with the SEC. Our SEC filings are available to the public over the
Internet at the SEC's web site at http://www.sec.gov. and through our own web
site at http://wisenergy.com. You may also read and copy any document we file
at the SEC's Public Reference Room at 450 Fifth Street, N.W., Washington, D.C.
20549, as well as at the offices of the New York Stock Exchange, 20 Broad
Street, New York, New York 10005, where our common stock is listed under the
symbol "WEC." You can call the SEC at 1-800-732-0330 for further information
about the Public Reference Room.

   The SEC allows us to "incorporate by reference" the information we file with
them, which means we are assumed to have disclosed important information to you
when we refer you to documents that are on file with the SEC. The information
we have incorporated by reference is an important part of this prospectus, and
information that we file later with the SEC will automatically update and
supersede this information. We incorporate by reference the documents listed
below and any future documents we file with the SEC under Sections 13(a),
13(c), 14 or 15(d) of the Securities Exchange Act of 1934 (including documents
filed after the date of the initial registration statement of which this
prospectus is a part and prior to the effectiveness of the registration
statement) until we sell all of the securities covered by this prospectus.

  .  Annual Report on Form 10-K for the fiscal year ended December 31, 2000.

  .  Quarterly Reports on Form 10-Q for the quarters ended March 31, 2001 and
     June 30, 2001.

  .  Current Reports on Form 8-K filed March 2, 2001, March 15, 2001, June 1,
     2001, June 7, 2001 and September 13, 2001.

   You may request a copy of these documents at no cost by writing to us at the
following address:

     Wisconsin Energy Corporation
     231 West Michigan Street
     P. O. Box 2949
     Milwaukee, Wisconsin 53201
     Attn: Mr. Thomas H. Fehring, Corporate Secretary
     Telephone: (414) 221-2662

   You should rely only on the information provided in or incorporated by
reference (and not later changed) in this prospectus or any prospectus
supplement. We have not authorized anyone else to provide you with additional
or different information. We are not making an offer of any securities in any
state where the offer is not permitted. You should not assume that the
information in this prospectus or any prospectus supplement is accurate as of
any date other than the date on the front of those documents.

                                       38


                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

   The estimated expenses in connection with the issuance and distribution of
the securities covered by this registration statement are as follows:


                                                                    
      SEC registration fee (actual)................................... $125,000
      Trustee's fees and expenses.....................................   10,000
      Printing fees and expenses......................................  175,000
      Legal fees and expenses.........................................  200,000
      Accountants' fees and expenses..................................   60,000
      Rating agencies' fees...........................................  160,000
      Miscellaneous expenses..........................................   20,000
                                                                       --------
          Total....................................................... $750,000
                                                                       ========


Item 15. Indemnification of Directors and Officers.

   Wisconsin Energy Corporation ("Wisconsin Energy") is incorporated under the
Wisconsin Business Corporation Law (the "WBCL").

   Under Section 180.0851(1) of the WBCL, Wisconsin Energy is required to
indemnify a director or officer, to the extent such person is successful on the
merits or otherwise in the defense of a proceeding, for all reasonable expenses
incurred in the proceeding if such person was a party because he or she was a
director or officer of Wisconsin Energy. In all other cases, Wisconsin Energy
is required by Section 180.0851(2) to indemnify a director or officer against
liability incurred in a proceeding to which such person was a party because he
or she was a director or officer of Wisconsin Energy, unless it is determined
that he or she breached or failed to perform a duty owed to Wisconsin Energy
and the breach or failure to perform constitutes: (i) a willful failure to deal
fairly with Wisconsin Energy or its shareholders in connection with a matter in
which the director or officer has a material conflict of interest; (ii) a
violation of criminal law, unless the director or officer had reasonable cause
to believe his or her conduct was lawful or no reasonable cause to believe his
or her conduct was unlawful; (iii) a transaction from which the director or
officer derived an improper personal profit; or (iv) willful misconduct.
Section 180.0858(1) provides that, subject to certain limitations, the
mandatory indemnification provisions do not preclude any additional right to
indemnification or allowance of expenses that a director or officer may have
under Wisconsin Energy's Restated Articles of Incorporation, Bylaws, any
written agreement or a resolution of the Board of Directors or shareholders.

   Section 180.0859 of the WBCL provides that it is the public policy of the
State of Wisconsin to require or permit indemnification, allowance of expenses
and insurance to the extent required or permitted under Sections 180.0850 to
180.0858 of the WBCL, for any liability incurred in connection with a
proceeding involving a federal or state statute, rule or regulation regulating
the offer, sale or purchase of securities.

   Section 180.0828 of the WBCL provides that, with certain exceptions, a
director is not liable to a corporation, its shareholders, or any person
asserting rights on behalf of the corporation or its shareholders, for damages,
settlements, fees, fines, penalties or other monetary liabilities arising from
a breach of, or failure to perform, any duty resulting solely from his or her
status as a director, unless the person asserting liability proves that the
breach or failure to perform constitutes any of the four exceptions to
mandatory indemnification under Section 180.0851(2) referred to above.

   Under Section 180.0833 of the WBCL, directors of Wisconsin Energy against
whom claims are asserted with respect to the declaration of improper dividends
or distributions to shareholders or certain other improper acts which they
approved are entitled to contribution from other directors who approved such
actions and from shareholders who knowingly accepted an improper dividend or
distribution, as provided therein.

                                      II-1


   Articles V and VI of Wisconsin Energy's Bylaws provides that Wisconsin
Energy will indemnify to the fullest extent permitted by law any person who is
or was a party or threatened to be made a party to any legal proceeding by
reason of the fact that such person is or was a director or officer of
Wisconsin Energy, or is or was serving at the request of Wisconsin Energy as a
director or officer of another enterprise, against expenses (including attorney
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by the person in connection with such legal proceeding. Wisconsin
Energy's Restated Articles of Incorporation and Bylaws do not limit the
indemnification to which directors and officers are entitled under the WBCL.

   Underwriting or purchase agreements entered into by Wisconsin Energy in
connection with the securities being registered may provide for indemnification
of directors, officers and controlling persons of Wisconsin Energy against
certain liabilities, including liabilities under the Securities Act of 1933.

   Officers and directors of Wisconsin Energy are covered by insurance policies
purchased by Wisconsin Energy under which they are insured (subject to
exceptions and limitations specified in the policies) against expenses and
liabilities arising out of actions, suits or proceedings to which they are
parties by reason of being or having been such directors or officers.

   Under each Trust Agreement, Wisconsin Energy will agree to indemnify each of
the Issuer Trustees of the WEC Trusts or any predecessor Issuer Trustee for the
WEC Trusts, and to hold the Issuer Trustees harmless against, any loss, damage,
claims, liability or expense incurred without negligence or bad faith or its
part, arising out of or in connection with the acceptance or administration of
the Trust Agreements, including the costs and expenses of defending itself
against any claim or liability in connection with the exercise or performance
of any of its powers or duties under the Trust Agreements.

Item 16. Exhibits.

   See Exhibit Index following the Signatures page in this Registration
Statement, which Exhibit Index is incorporated herein by reference.

Item 17. Undertakings.

     Each undersigned Registrant hereby undertakes (in accordance with the
  corresponding lettered undertakings in Item 512 of Regulation S-K):

      (a) (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) of this
  section do not apply if the Registration Statement is on Form S-3 or Form
  S-8, and the information required to be included in a post-effective
  amendment by those paragraphs is contained in periodic reports filed by the
  Registrant with the Commission pursuant to Section 13 or Section 15(d) of
  the Securities Exchange Act of 1934 that are incorporated by reference in
  the Registration Statement.

                                      II-2


     (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) 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.

     (d) In the event that the terms of any offers and sales of the
  securities are determined by competitive bidding (i) to use its best
  efforts to distribute, prior to the opening of bids, to prospective
  bidders, underwriters and dealers a reasonable number of copies of a
  prospectus which at the time meets the requirements of section 10(a) of the
  Securities Act of 1933 and relating to the securities offered at
  competitive bidding, as contained in the Registration Statement together
  with any supplements thereto and (ii) to file an amendment to the
  Registration Statement reflecting the results of bidding, the terms of the
  reoffering and related matters to the extent required by the applicable
  form, not later than the first use, authorized by the issuer after the
  opening of bids, of a prospectus relating to the securities offered at
  competitive bidding, unless no further public offering of such securities
  by the issuer and no reoffering of such securities by the purchasers is
  proposed to be made.

     (h) Reference is made to the indemnification provisions described in
  Item 15 of this Registration Statement.

     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 Act and is, therefore, unenforceable. In the event that a
  claim for indemnification against such liabilities (other than the payment
  by the Registrant of expenses incurred or paid by a director, officer or
  controlling person of the Registrant in the successful defense of any
  action, suit or proceeding) is asserted by such director, officer or
  controlling person in connection with the securities being registered, the
  Registrant will, unless in the opinion of its counsel the matter has been
  settled by controlling precedent, submit to a court of appropriate
  jurisdiction the question whether such indemnification by it is against
  public policy as expressed in the Act and will be governed by the final
  adjudication of such issue.

      (i) (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.

                                      II-3


                                   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 registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Milwaukee, State of Wisconsin, on September 18,
2001.

                                          WISCONSIN ENERGY CORPORATION

                                           /s/ Richard A. Abdoo
                                          By: _________________________________
                                                Richard A. Abdoo, Chairman of
                                                the Board, President and Chief
                                                Executive Officer

                               POWER OF ATTORNEY

   Each person whose signature appears below hereby authorizes Richard A. Abdoo
and Paul Donovan, or either of them, as attorneys-in-fact with full power of
substitution, to execute in the name and on behalf of such person,
individually, and in each capacity stated below or otherwise, and to file, any
and all amendments to this registration statement.

   Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.*



                 Signature                                     Title
                 ---------                                     -----


                                         
          /s/ Richard A. Abdoo              Chairman of the Board, President and Chief
___________________________________________ Executive Officer (Principal Executive
             Richard A. Abdoo               Officer and Director)

           /s/ Paul Donovan                 Senior Vice President and Chief Financial
___________________________________________ Officer (Principal Financial Officer)
                Paul Donovan

         /s/ Stephen P. Dickson             Controller (Principal Accounting Officer)
___________________________________________
             Stephen P. Dickson

           /s/ John F. Ahearne              Director
___________________________________________
             John F. Ahearne

                                            Director
___________________________________________
             John F. Bergstrom

         /s/ Barbara L. Bowles              Director
___________________________________________
             Barbara L. Bowles

         /s/ Robert A. Cornog               Director
___________________________________________
             Robert A. Cornog

          /s/ Willie D. Davis               Director
___________________________________________
              Willie D. Davis

         /s/ Richard R. Grigg               Director
___________________________________________
             Richard R. Grigg

     /s/ Frederick P. Stratton, Jr.         Director
___________________________________________
         Frederick P. Stratton, Jr.

        /s/ George E. Wardeberg             Director
___________________________________________
            George E. Wardeberg

--------
*Each of the above signatures is affixed as of September 18, 2001.

                                      II-4


                                   SIGNATURES

   Pursuant to the requirements of the Securities Act of 1933, WEC Capital
Trust II 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
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Milwaukee, State of Wisconsin, on September 18,
2001.

                                          WEC CAPITAL TRUST II
                                          (Registrant)

                                          By: Wisconsin Energy Corporation,
                                             as Depositor

                                             /s/ Paul Donovan
                                          By: _________________________________
                                                 Paul Donovan
                                                 Senior Vice President and
                                                 Chief Financial Officer

                                      II-5


                          WISCONSIN ENERGY CORPORATION
                                (the "Company")
                          (Commission File No. 1-9057)

                                 EXHIBIT INDEX
                                       TO
                        FORM S-3 REGISTRATION STATEMENT

   The following exhibits are filed with or incorporated by reference in this
Registration Statement:



                                     Incorporated Herein
 Exhibit Description                 By Reference To             Filed Herewith
 ------- -----------                 -------------------         --------------
                                                       
  1.1    Form of Underwriting        Exhibit 1.1 to the
         Agreement for               Company's Registration
         Debt Securities             Statement on Form S-3
                                     (File No. 333-56508)
                                     filed March 2, 2001

  1.2*   Form of Underwriting
         Agreement for Preferred
         Securities

  1.3**  Form of Underwriting
         Agreement for Preferred
         Stock

  3.1    Restated Articles of        Exhibit (3)-1 to the
         Incorporation of            Company's Quarterly
         Wisconsin Energy            Report on Form 10-Q for
         Corporation, as amended     the quarter ended June
         and restated effective      30, 1995
         June 12, 1995

  3.2    Bylaws of Wisconsin         Exhibit 3.1 to Quarterly
         Energy Corporation, as      Report on Form 10-Q for
         amended to May 1, 2000      the quarter ended March
                                     31, 2000

  4.1    Indenture for Debt          Exhibit 4.46 to the
         Securities dated as of      Company's Current Report
         March 15, 1999 between      on Form 8-K dated March
         the Company and Bank One    25, 1999 (the "3/25/99
         Trust Company, National     8-K")
         Association (successor to
         The First National Bank
         of Chicago), as Trustee,
         including, as exhibits,
         forms of Registered
         Security and Bearer
         Security thereunder (the
         "Indenture")

  4.2    Securities Resolution No.   Exhibit 4.47 to the
         1 of the Company under      3/25/99 8-K
         the Indenture, dated as
         of March 16, 1999

  4.3    Securities Resolution No.   Exhibit 4.1 to the
         2 of the Company under      Company's Quarterly
         the Indenture, dated as     Report on Form 10-Q for
         of March 23, 2001           the quarter ended March
                                     31, 2001

  4.4    Form of Securities          Exhibit 4.3 to the
         Resolution for Debt         Company's Registration
         Securities                  Statement on Form S-3
                                     (File No. 333-56508)
                                     filed March 2, 2001

  4.5    Certificate of Trust of     Exhibit 4.5 to the
         WEC Capital Trust II        Company's Registration
                                     Statement on Form S-3
                                     (File No. 333-73137)
                                     filed March 1, 1999

  4.6    Trust Agreement of WEC      Exhibit 4.6 to the
         Capital Trust II            Company's Registration
                                     Statement on Form S-3
                                     (File No. 333-73137)
                                     filed March 1, 1999


                                      II-6




                                    Incorporated Herein
 Exhibit Description                By Reference To              Filed Herewith
 ------- -----------                -------------------          --------------
                                                      
  4.7    Form of Amended and        Exhibit 4.7 to the
         Restated Trust Agreement   Company's Registration
         for WEC Capital Trust II   Statement on Form S-3
                                    (File No. 333-73137)
                                    filed March 1, 1999

  4.8    Form of Preferred          Exhibit 4.8 to the
         Security Certificate for   Company's Registration
         WEC Capital Trust II       Statement on Form S-3
         (incorporated by           (File No. 333-73137)
         reference to Exhibit D     filed March 1, 1999
         of Exhibit 4.7)

  4.9    Form of Guarantee          Exhibit 4.9 to the
         Agreement for WEC          Company's Registration
         Capital Trust II           Statement on Form S-3
                                    (File No. 333-73137)
                                    filed March 1, 1999

  4.10   Reference is made to       Exhibit 3.1 herein
         Article III of the
         Restated Articles of
         Incorporation regarding
         the rights of
         shareholders

  4.11** Form of Articles of
         Amendment for Series of
         Preferred Stock

  5.1    Opinion of Quarles &                                           X
         Brady LLP

  5.2*   Opinion of special
         Delaware counsel as to
         the legality of the
         Preferred Securities to
         be issued by WEC Capital
         Trust II

  8*     Opinion re tax matters
         of Quarles & Brady LLP

 12      Statement of Computation                                       X
         of Ratio of Earnings to
         Fixed Charges

 23.1    Consent of                                                     X
         PricewaterhouseCoopers
         LLP

 23.2    Consent of Quarles &                                   Contained in
         Brady LLP                                              Exhibit 5.1

 23.3*   Consent of special                                     To be contained in
         Delaware counsel                                       Exhibit 5.2

 24      Power of Attorney                                      On Signatures page

 25.1    Form T-1, Statement of                                         X
         Eligibility under the
         Trust Indenture Act of
         1939 of Bank One Trust
         Company, National
         Association (successor
         to The First National
         Bank of Chicago) with
         respect to the Indenture
         for Debt Securities and
         the Guarantees for the
         benefit of the holders
         of Preferred Securities
         of WEC Capital Trust II

 25.2    Form T-1, Statement of                                         X
         Eligibility under the
         Trust Indenture Act of
         1939 of Bank One Trust
         Company, National
         Association (successor
         to The First National
         Bank of Chicago) with
         respect to the Amended
         and Restated Trust
         Agreement of WEC Capital
         Trust II

--------
   *To be filed by amendment or under cover of Form 8-K and incorporated herein
   by reference if Preferred Securities are issued.
  **To be filed by amendment or under cover of Form 8-K and incorporated herein
   by reference if Preferred Stock is issued.

                                      II-7