<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.

<CIK> 0000762129
<NAME> CILCORP INC.
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               JUN-30-2000
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      852,965
<OTHER-PROPERTY-AND-INVEST>                    166,835
<TOTAL-CURRENT-ASSETS>                         159,157
<TOTAL-DEFERRED-CHARGES>                        60,803
<OTHER-ASSETS>                                 564,160
<TOTAL-ASSETS>                               1,803,920
<COMMON>                                             0
<CAPITAL-SURPLUS-PAID-IN>                      468,833
<RETAINED-EARNINGS>                            (4,164)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 464,669
<PREFERRED-MANDATORY>                           22,000
<PREFERRED>                                     44,120
<LONG-TERM-DEBT-NET>                           738,457
<SHORT-TERM-NOTES>                              43,000
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                  56,700
<LONG-TERM-DEBT-CURRENT-PORT>                        0
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                        906
<LEASES-CURRENT>                                   543
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 433,525
<TOT-CAPITALIZATION-AND-LIAB>                1,803,920
<GROSS-OPERATING-REVENUE>                      314,756
<INCOME-TAX-EXPENSE>                             3,454
<OTHER-OPERATING-EXPENSES>                     271,719
<TOTAL-OPERATING-EXPENSES>                     275,173
<OPERATING-INCOME-LOSS>                         39,583
<OTHER-INCOME-NET>                               (521)
<INCOME-BEFORE-INTEREST-EXPEN>                  39,062
<TOTAL-INTEREST-EXPENSE>                        34,384
<NET-INCOME>                                     4,678
<PREFERRED-STOCK-DIVIDENDS>                      1,898
<EARNINGS-AVAILABLE-FOR-COMM>                    2,780
<COMMON-STOCK-DIVIDENDS>                         6,200
<TOTAL-INTEREST-ON-BONDS>                       31,133
<CASH-FLOW-OPERATIONS>                          40,186
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0