[Letterhead of Winthrop, Stimson, Putnam & Roberts]



                                 August 19, 1996



IES Industries Inc.
IES Tower
200 First Street S.E. 
Cedar Rapids, Iowa  52401


Ladies and Gentlemen:

          You have requested our opinion as to the material United States
federal income tax consequences to the following parties as a result of the
Mergers (as defined below):

     (i)       IES Industries Inc., a holding company incorporated under Iowa
               law ("IES");

     (ii)      WPL Holdings, Inc., a holding company incorporated under
               Wisconsin law ("WPLH");

     (iii)     IES Utilities Inc., an operating public utility incorporated
               under Iowa law ("Utilities");

     (iv)      IES Utilities Inc., a wholly-owned subsidiary of IES, which may
               be incorporated under Wisconsin law ("New Utilities"); and

     (v)       the shareholders of IES, other than non-U.S. persons, tax-exempt
               entities or individuals who acquired IES stock pursuant to an IES
               employee stock option plan or otherwise as compensation.

          As counsel to IES we have examined the Agreement and Plan of 
Merger, dated as of November 10, 1995, by and among WPLH, IES, Interstate 
Power Company ("Interstate"), WPLH Acquisition Co. and Interstate Power 
Company, a wholly-owned subsidiary of Interstate ("New Interstate"), as 
amended (the "Merger Agreement"), and assisted in preparing the Joint Proxy 
Statement/Prospectus to be used in connection with the Mergers (as defined 
below) (the "Proxy"), which forms a part of the Registration Statement on 
Form S-4



filed by WPLH and New Interstate pursuant to the Merger Agreement (the "S-4").


          Except as otherwise provided, capitalized terms not defined herein
have the meanings set forth in the Merger Agreement or in the officer's
certificate or representation letter that each of IES, Utilities and WPLH has
delivered to us and that contain certain representations upon which we have
relied for purposes of this opinion (the "Officer's Certificates").

          Pursuant to the Merger Agreement:

     (i)       if it is determined that regulatory requirements mandate that the
               utility subsidiaries of Interstate Energy Corporation
               ("Interstate Energy") be Wisconsin corporations, Utilities will
               merge into New Utilities under the laws of Wisconsin and Iowa
               (the "Reincorporation Merger"), in which event:

          (A)       each issued and outstanding share of Utilities common stock
                    will be converted into the right to receive one share of New
                    Utilities common stock; and

          (B)       each issued and outstanding share of Utilities preferred
                    stock will be redeemed for cash;
 
     (ii)      IES will merge into WPLH under the laws of Wisconsin and Iowa
               (the "IES Merger" and, together with the Reincorporation Merger,
               the "Mergers");

     (iii)     WPLH will survive the IES Merger and continue its corporate
               existence under Wisconsin law;

     (iv)      WPLH will change its name to Interstate Energy Corporation;

     (v)       each share of IES common stock, no par value ("IES Common
               Stock"), owned by IES, WPLH or Interstate or any of their
               respective Subsidiaries will be canceled and cease to exist;

     (vi)      each issued and outstanding share of IES Common Stock (other than
               shares canceled, as described in

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               clause (v), and IES Dissenting Shares, discussed in clause
               (viii)) will be converted into the right to receive 1.14 duly
               authorized, validly issued, fully paid and nonassessable (except
               as otherwise provided in the WBCL) shares of Interstate Energy
               common stock, par value $.01, ("Interstate Energy Common Stock"),
               plus, if applicable, associated rights to purchase shares of
               Interstate Energy Common Stock pursuant to the WPLH Rights
               Agreement;

     (vii)     all shares of IES Common Stock described in clause (vi) will be
               canceled and cease to exist;

     (viii)    IES Dissenting Shares will be canceled and converted into cash
               pursuant to the applicable provisions of the IBCA.  If the right
               of the holders to receive the fair cash value of such shares is
               terminated otherwise than by purchase by WPLH, such shares will
               cease to be Dissenting Shares and will represent the right to
               receive Interstate Energy Common Stock; and

     (ix)      a holder of IES Common Stock who would otherwise have been
               entitled to receive a fractional share of Interstate Energy
               Common Stock will be entitled to receive a cash payment in lieu
               of such fractional share.

          The discussions in the Proxy under the headings "Certain Federal
Income Tax Consequences" and this opinion are based upon and subject to:

     (i)       the Mergers being effected as described in the Proxy and in
               accordance with the provisions of the Merger Agreement;

     (ii)      the accuracy of the representations of IES, Utilities and WPLH in
               their respective Officer's Certificates, and their continuing
               accuracy at all times through the Effective Time;

     (iii)     the accuracy and completeness of the statements concerning the
               Mergers set forth in the Proxy, including the purposes of IES,
               Utilities, New Utilities and WPLH for consummating the Mergers;
               and

     (iv)      the accuracy of the statements concerning the Mergers that have
               come to our attention during our engagement as counsel to IES in
               connection with the Mergers.

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          Based on our examination of the foregoing items and subject to the
limitations set forth herein, we are of the opinion that for federal income tax
purposes:

     (i)       each of the Mergers will constitute a reorganization within the
               meaning of Section 368(a) of the Internal Revenue Code of 1986,
               as amended (the "Code");

     (ii)      IES and WPLH (and Utilities and New Utilities if the
               Reincorporation is effected) will each be a party to a
               reorganization within the meaning of Section 368(b) of the Code; 

     (iii)     no gain or loss will be recognized by IES, WPLH, Utilities, or
               New Utilities as a result of the Mergers;

     (iv)      no gain or loss will be recognized by IES stockholders when they
               receive Interstate Energy Common Stock in exchange for their IES
               Common Stock;

     (v)       IES stockholders who receive cash in lieu of fractional interests
               in Interstate Energy Common Stock will recognize gain or loss
               equal to the difference between the amount of such cash and the
               tax basis allocable to their fractional share interests, and such
               gain or loss will constitute capital gain or loss if their IES
               Common Stock is held as a capital asset at the Effective Time;

     (vi)      IES stockholders who receive cash for IES Dissenting Shares will
               recognize gain or loss equal to the difference between the amount
               of such cash and the tax basis of their IES Dissenting Shares,
               and such gain or loss will constitute capital gain or loss if
               their IES Dissenting Shares are held as capital assets at the
               Effective Time;

     (vii)     the tax basis of Interstate Energy Common Stock received by IES
               stockholders will equal the tax basis of their IES Common Stock
               exchanged therefor, reduced by the tax basis allocable to any
               fractional share interests in Interstate Energy Common Stock with
               respect to which they receive cash; and

     (viii)    the IES stockholders' holding periods for the Interstate Energy
               Common Stock that they receive in the IES Merger will include the
               holding period

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               of their IES Common Stock exchanged therefor, provided they hold
               such IES Common Stock as a capital asset at the Effective Time.

          This opinion does not address state, local or foreign tax consequences
that may result from the Mergers.  Except as specifically set forth herein, no
opinion is expressed as to any federal income tax consequence of the Mergers. 
This opinion may not be relied upon except as to the consequences specifically
discussed herein.  

          We hereby consent to (i) the filing of this opinion with the SEC as an
exhibit to the S-4 and (ii) the references to our firm in the Proxy, under the
headings "Certain Federal Income Tax Consequences."  In giving such consent, we
do not thereby admit that we are in the category of persons whose consent is
required under Section 7 of the Securities Act.

                                   Very truly yours,

                                    /s/ Winthrop, Stimson, Putnam & Roberts


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