<PAGE>
FILER:
COMPANY DATA:
COMPANY CONFORMED NAME: ALLIANT ENERGY CORPORATION
CENTRAL INDEX KEY:
STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC AND OTHER SERVICES COMB.
[4931]
IRS NUMBER: 391380265
STATE OF INCORPORATION: WI
FISCAL YEAR END: 12/31
FILING VALUES:
FORM TYPE: 35-CERT
SEC ACT:
SEC FILE NUMBER: 070-9317
FILM NUMBER:
BUSINESS ADDRESS:
STREET 1: 222 WEST WASHINGTON AVENUE
CITY: MADISON
STATE: WI
ZIP: 53703
BUSINESS PHONE: 608-252-3311
MAILING ADDRESS
STREET 1: P. O. BOX 192
CITY: MADISON
STATE: WI
ZIP: 53701-0192
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington D. C. 20549
PUBLIC UTILITY HOLDING COMPANY ACT OF 1935
File No. 70-9317
REPORT PERIOD
January 1, 2000 through March 31, 2000
In the Matter of
ALLIANT ENERGY CORPORATION, ET AL
ALLIANT ENERGY CORPORATION ("AEC") hereby certifies on behalf of itself
and IES Utilities Inc. ("IESU"), Interstate Power Company ("IPC"), and Alliant
Energy Corporate Services, Inc. ("Services") that during the period from
January 1, 2000 through March 31, 2000 (the 'Reporting Period'):
1. For each of the companies participating in the Utility Money Pool
during the Reporting Period, the maximum principal amount of short-term
borrowings outstanding from the Utility Money Pool, sources other than the
Utility Money Pool, and the maximum total short-term borrowings outstanding
during the Reporting Period, and the Securities and Exchange Commission ('SEC')
borrowing limit for each participant as of the end of the Reporting Period were
as follows:
<TABLE>
<CAPTION>
Maximum
Maximum Other Maximum
Money Pool Short-Term Total SEC
Company Borrowings Borrowings Borrowings Limit
<S> <C> <C> <C> <C> <C>
IESU 72,626,825 0.00 72,626,825 150,000,000
IPC 39,974,244 0.00 39,974,244 72,000,000
WP&L (*) 127,076,993 0.00 127,076,993 NA
SERVICES 12,131,356 0.00 12,131,356 100,000,000
</TABLE>
(*) All borrowings by WP&L from the Money Pool are exempt under
Rule 52(a) and are shown here for information purposes only.
2. During the Reporting Period, the weighted average interest rate for
borrowings through the Money Pool was 5.97 %.
<PAGE>
3. The maximum amount of AEC's short-term borrowings on behalf of
itself and the above named participants in the Utility Money Pool during the
Reporting Period, and its SEC limit as of the end of the Reporting Period, were
as follows:
<TABLE>
<CAPTION>
Maximum Maximum Maximum
Loans to Corporate Short-Term SEC
Money Pool Borrowings Borrowings Limit
<S> <C> <C> <C> <C>
AEC 223,037,910 130,795,007 285,825,000 450,000,000
________________
</TABLE>
Said transactions have been carried out in accordance with the terms and
conditions of, and for the purpose represented in, the Form U-1
Application-Declaration, as amended, of AEC, et al, in File 70-9317, and in
accordance with the terms and conditions of the SEC's order dated December 18,
1998, permitting said Application-Declaration to become effective.
DATED: May 1, 2000
ALLIANT ENERGY CORPORATION
IES UTILITIES INC.
INTERSTATE POWER COMPANY
WISCONSIN POWER AND LIGHT COMPANY
ALLIANT ENERGY CORPORATE SERVICES INC.
BY: ALLIANT ENERGY CORPORATION
BY: _________________________________
Edward M. Gleason
Vice President, Treasurer
and Corporate Secretary
