<TABLE> <S> <C>
<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the
September 30, 2000 Financial Statements included in IES Utilities Inc.'s Form
10-Q and is qualified in its entirety by reference to such Financial Statements.
</LEGEND>
<CIK> 0000052485
<NAME> IES UTILITIES INC.
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<BOOK-VALUE> PER-BOOK
<TOTAL-NET-UTILITY-PLANT> 1,365,486
<OTHER-PROPERTY-AND-INVEST> 126,577
<TOTAL-CURRENT-ASSETS> 133,836
<TOTAL-DEFERRED-CHARGES> 13,108
<OTHER-ASSETS> 117,236
<TOTAL-ASSETS> 1,756,243
<COMMON> 33,427
<CAPITAL-SURPLUS-PAID-IN> 279,042
<RETAINED-EARNINGS> 268,317 <F1>
<TOTAL-COMMON-STOCKHOLDERS-EQ> 580,786
0
18,320
<LONG-TERM-DEBT-NET> 469,708
<SHORT-TERM-NOTES> 77,004
<LONG-TERM-NOTES-PAYABLE> 0
<COMMERCIAL-PAPER-OBLIGATIONS> 0
<LONG-TERM-DEBT-CURRENT-PORT> 81,560
0
<CAPITAL-LEASE-OBLIGATIONS> 17,284
<LEASES-CURRENT> 12,057
<OTHER-ITEMS-CAPITAL-AND-LIAB> 499,524
<TOT-CAPITALIZATION-AND-LIAB> 1,756,243
<GROSS-OPERATING-REVENUE> 624,999
<INCOME-TAX-EXPENSE> 43,285 <F2>
<OTHER-OPERATING-EXPENSES> 491,177
<TOTAL-OPERATING-EXPENSES> 491,177 <F2>
<OPERATING-INCOME-LOSS> 133,822
<OTHER-INCOME-NET> 7,688
<INCOME-BEFORE-INTEREST-EXPEN> 141,510
<TOTAL-INTEREST-EXPENSE> 38,208
<NET-INCOME> 60,017
686
<EARNINGS-AVAILABLE-FOR-COMM> 59,331
<COMMON-STOCK-DIVIDENDS> 43,975
<TOTAL-INTEREST-ON-BONDS> 39,002
<CASH-FLOW-OPERATIONS> 175,619
<EPS-BASIC> 0 <F3>
<EPS-DILUTED> 0 <F3>
<FN>
<F1> Includes $8 of Accumulated Other Comprehensive Income.
<F2> Income tax expense is not included in Operating Expense in the Consolidated Statements of Income.
<F3>Earnings per share of common stock is not reflected because all common shares are held by Alliant Energy Corporation.
</FN>
</TABLE>