SECURITIES AND EXCHANGE COMMISSION

                      Washington, D.C. 20549


************************************
          In the Matter of
 Alliant Energy Corporation, et al.           CERTIFICATE
                                              PURSUANT TO
              File No.                          RULE 24

(Public Utility Holding Company Act
              of 1935)
************************************

     This Certificate of Notification  (the  "Certificate")  is filed by Alliant
Energy Corporation  ("Alliant  Energy"),  a registered holding company under the
Public  Utility  Holding  Company Act of 1935,  as amended (the "Act"),  and its
wholly-owned  subsidiary,  Alliant  Energy  Resources,  Inc.  ("Resources"),  in
connection    with    the    transactions    proposed    in   the    Form    U-1
Application-Declaration (the "Application-Declaration"),  as amended, of Alliant
Energy and Resources (collectively, the "Applicants") in File No. 70-9455. These
transactions were authorized by order of the Securities and Exchange  Commission
(the  "Commission")  dated August 26, 1999 (the "Order").  The Applicants hereby
certify the  matters set forth below  pursuant to Rule 24 of the rules under the
Act:

a.   The sales of Common  Stock of  Alliant  Energy and the  purchase  price per
     share and the market price per share at the date of the agreement of sale.

      ANSWER:

      None


b.   The total  number  of  shares of  Alliant  Energy  Common  Stock  issued or
     issuable under options  granted  during the quarter under Alliant  Energy's
     benefit plans or otherwise.

      ANSWER:

     Stock options exercised under the Alliant Energy Long-Term Equity Incentive
Plan:


                                                     
       Date               Number of Shares                Exercise Price
      ---------          ------------------              ----------------
      01/26/01                 1,900                         $31.66
      02/09/01                   800                         $31.84
      02/09/01                 2,000                         $32.00
      02/21/01                 6,254                         $32.71
      02/27/01                 1,956                         $33.00
      02/28/01                 8,900                         $32.90


c.   If Common Stock has been transferred to a seller of securities of a company
     being  acquired,  the number of shares so  issued,  the value per share and
     whether the shares are restricted to the acquiror.

      ANSWER:

      NONE


d.   The names of the guarantors and of the beneficiary of any Guaranteed  Note,
     Alliant Energy Guarantee or Non-utility  Subsidiary Guarantee issued during
     the quarter, and the amount, terms and purpose of the guarantee.

      ANSWER:

      See Exhibit A.


e.   The amount and terms of any Debentures issued during the quarter.

      ANSWER:

     In March 2001 IES Utilities  Inc.  issued  $200,000,000  in 6 3/4% Series B
Senior Debentures due March 15, 2011. Interest is paid semi-annually.


f.   The  amount  and  terms of any  financings  consummated  by any  Nonutility
     Subsidiary during the quarter that are not exempt under Rule 52.

      ANSWER:

      None.

g.   The  notional  amount and  principal  terms of any  Interest  Rate Hedge or
     Anticipatory  Hedge entered into during the quarter and the identity of the
     parties to such instruments.

      ANSWER:

     During the first quarter 2001 Alliant  Energy entered into an interest rate
swap with Merrill Lynch Capital Services, Inc.

           Principal terms were as follows:

           Notional Amount:      $175,000,000
           Trade Date:           February 27, 2001
           Effective Date :      March 28, 2001
           Termination Date:     March 28, 2001

     The  purpose  of this  swap was to serve as a  partial  anticipatory  hedge
against  interest  rate movement  prior to the issuance of IES Utilities  Inc.'s
$200 million bond issue. This swap was terminated early on March 6, 2001.

h.   The name,  parent  company,  and amount  invested  in any new  Intermediate
     Subsidiary or Financing Subsidiary during the quarter.

      ANSWER:

     As part of a reorganization of Alliant Energy's  Industrial  Services Unit,
which primarily provides energy management and consulting  services through Rule
58  companies,  the  predecesor  holding  company for such Rule 58 companies was
dissolved.  Alliant  Energy  Integrated  Services  Company  was  formed as a new
Intermediate  Subsidiary  for the purpose of holding the interests in several of
Alliant Energy's Rule 58 companies.  These Rule 58 companies were contributed to
Alliant Energy Integrated  Services Company  simultaneously with the dissolution
of the previous holding company.  Therefore, there was no new investment in this
Intermediate Subsidiary.

i.   A list of U-6B-2 forms  (Certificate of the issuance,  renewal or guarantee
     of a security  exempted  from  provisions  of Section  6(a)) filed with the
     Commission during the quarter,  including the name of the filing entity and
     the date of filing.

      ANSWER:

      Alliant Energy Resources, Inc.      February 12, 2001

j.   Consolidated  balance  sheets  as of the end of the  quarter  and  separate
     balance  sheets as of the end of the  quarter for each  company,  including
     Alliant Energy, that has engaged in jurisdictional  financing  transactions
     during the quarter.

      ANSWER:

     The balance sheets of Alliant Energy and Resources as of March 31, 2001 are
in the 10-Q  filing for the quarter  ended  March 31, 2001 and are  incorporated
herein by reference.


k.    Additional investments in Energy Assets were as follows:

      During the first quarter 2001:

      Acquisition Date:   Feb 1, 2001
      Name of purchasing company:   Industrial Energy Applications
      Delaware, Inc.
      Sellers:   Shoreham Pipeline Company, Shoreham South Texas
      LLC, and Shoreham Resources, Inc.
      Purchase price:   $935,478.38
      Located in Texas:   Corpus Cristi area
      Name of Company Acquired:   Alliant South Texas Pipeline, LP
      Description:   Crude oil gathering pipeline


     For investments made by Whiting Petroleum  Corporation in the first quarter
of 2001, see Exhibit B-1.


     For investments made by Whiting Petroleum Corporation in the fourth quarter
of 2000, see Exhibit B-2.



                         S I G N A T U R E

     Pursuant to the  requirements  of the Public Utility Holding Company Act of
1935, as amended, the undersigned companies have duly caused this Certificate to
be signed on their behalf by the undersigned thereunto duly authorized.



                               ALLIANT ENERGY CORPORATION



                               By:  ______________________________
                                    Name:   Enrique Bacalao
                                    Title:     Assistant-Treasurer

May 29, 2001