<ARTICLE> UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF INCOME, STATEMENT OF CASH FLOWS AND BALANCE SHEET AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000762129
<NAME> CILCORP INC.
<MULTIPLIER> 1,000

                             
<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>                      855,056
<OTHER-PROPERTY-AND-INVEST>                    195,435
<TOTAL-CURRENT-ASSETS>                         187,294
<TOTAL-DEFERRED-CHARGES>                        74,515
<OTHER-ASSETS>                                 599,228
<TOTAL-ASSETS>                               1,911,528
<COMMON>                                             0
<CAPITAL-SURPLUS-PAID-IN>                      468,833
<RETAINED-EARNINGS>                            (2,491)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 466,342
<PREFERRED-MANDATORY>                           22,000
<PREFERRED>                                     19,120
<LONG-TERM-DEBT-NET>                           729,969
<SHORT-TERM-NOTES>                              46,000
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                  75,200
<LONG-TERM-DEBT-CURRENT-PORT>                    8,500
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                        763
<LEASES-CURRENT>                                   555
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 543,079
<TOT-CAPITALIZATION-AND-LIAB>                1,911,528
<GROSS-OPERATING-REVENUE>                      494,651
<INCOME-TAX-EXPENSE>                             7,391
<OTHER-OPERATING-EXPENSES>                     424,162
<TOTAL-OPERATING-EXPENSES>                     431,553
<OPERATING-INCOME-LOSS>                         63,098
<OTHER-INCOME-NET>                               (767)
<INCOME-BEFORE-INTEREST-EXPEN>                  62,331
<TOTAL-INTEREST-EXPENSE>                        52,340
<NET-INCOME>                                     9,991
<PREFERRED-STOCK-DIVIDENDS>                      2,437
<EARNINGS-AVAILABLE-FOR-COMM>                    7,554
<COMMON-STOCK-DIVIDENDS>                         9,300
<TOTAL-INTEREST-ON-BONDS>                       46,598
<CASH-FLOW-OPERATIONS>                          78,634
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0