WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>



                                                                      Exhibit 27

                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                             10-K DECEMBER 31, 1999
                           FINANCIAL DATA SCHEDULE UT
          PUBLIC UTILITY COMPANIES AND PUBLIC UTILITY HOLDING COMPANIES
                  APPENDIX E TO ITEM 601 (C) OF REGULATION S-K
                             (Thousands of Dollars)

<ARTICLE> UT

<S>                                                         <C>

<PERIOD-TYPE>                                                    12-MOS
<FISCAL-YEAR-END>                                           DEC-31-1999
<PERIOD-END>                                                DEC-31-1999
<BOOK-VALUE>                                                   PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                     1,472,764
<OTHER-PROPERTY-AND-INVEST>                                           0
<TOTAL-CURRENT-ASSETS>                                          249,607
<TOTAL-DEFERRED-CHARGES>                                         17,722
<OTHER-ASSETS>                                                   41,661
<TOTAL-ASSETS>                                                1,781,754
<COMMON>                                                        120,033
<CAPITAL-SURPLUS-PAID-IN>                                             0
<RETAINED-EARNINGS>                                             414,345
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                  534,378
<PREFERRED-MANDATORY>                                                 0
<PREFERRED>                                                      80,000
<LONG-TERM-DEBT-NET>                                            493,625
<SHORT-TERM-NOTES>                                                    0
<LONG-TERM-NOTES-PAYABLE>                                             0
<COMMERCIAL-PAPER-OBLIGATIONS>                                        0
<LONG-TERM-DEBT-CURRENT-PORT>                                    35,000
<PREFERRED-STOCK-CURRENT>                                             0
<CAPITAL-LEASE-OBLIGATIONS>                                           0
<LEASES-CURRENT>                                                      0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                  638,751
<TOT-CAPITALIZATION-AND-LIAB>                                 1,781,754
<GROSS-OPERATING-REVENUE>                                       928,122
<INCOME-TAX-EXPENSE>                                             30,773
<OTHER-OPERATING-EXPENSES>                                      802,634
<TOTAL-OPERATING-EXPENSES>                                      833,407
<OPERATING-INCOME-LOSS>                                          94,715
<OTHER-INCOME-NET>                                                2,022
<INCOME-BEFORE-INTEREST-EXPEN>                                   96,737
<TOTAL-INTEREST-EXPENSE>                                         42,757
<NET-INCOME>                                                     53,980
<PREFERRED-STOCK-DIVIDENDS>                                       3,833
<EARNINGS-AVAILABLE-FOR-COMM>                                    50,147
<COMMON-STOCK-DIVIDENDS>                                         90,342
<TOTAL-INTEREST-ON-BONDS>                                        38,332
<CASH-FLOW-OPERATIONS>                                          165,621
<EPS-BASIC>                                                        0.00  <F1>
<EPS-DILUTED>                                                      0.00  <F1>

<FN>
<F1> Information not normally disclosed in financial statements and notes.
</FN>




</TABLE>