<ARTICLE>                                  OPUR1
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
CONSOLIDATED BALANCE SHEETS,  CONSOLIDATED STATEMENTS OF INCOME AND CONSOLIDATED
STATEMENTS  OF CASH FLOWS AND IS  QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.


  <NUMBER>                                 4
  <NAME>                                   PSI ENERGY, INC.
<MULTIPLIER>                                                           1,000

                                                        
<PERIOD-TYPE>                                              12-MOS
<FISCAL-YEAR-END>                                          DEC-31-1999
<PERIOD-START>                                             JAN-01-1999
<PERIOD-END>                                               DEC-31-1999
<BOOK-VALUE>                                               PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                          2,654,646
<OTHER-PROPERTY-AND-INVEST>                                                0
<TOTAL-CURRENT-ASSETS>                                               569,010
<TOTAL-DEFERRED-CHARGES>                                             518,788
<OTHER-ASSETS>                                                        92,392
<TOTAL-ASSETS>                                                     3,834,836
<COMMON>                                                                 539
<CAPITAL-SURPLUS-PAID-IN>                                            411,198
<RETAINED-EARNINGS>                                                  643,960
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                     1,055,697
<PREFERRED-MANDATORY>                                                      0
<PREFERRED>                                                           71,911
<LONG-TERM-DEBT-NET>                                               1,211,552
<SHORT-TERM-NOTES>                                                   232,597
<LONG-TERM-NOTES-PAYABLE>                                                  0
<COMMERCIAL-PAPER-OBLIGATIONS>                                             0
<LONG-TERM-DEBT-CURRENT-PORT>                                         31,000
<PREFERRED-STOCK-CURRENT>                                                  0
<CAPITAL-LEASE-OBLIGATIONS>                                                0
<LEASES-CURRENT>                                                           0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                     1,232,079
<TOT-CAPITALIZATION-AND-LIAB>                                      3,834,836
<GROSS-OPERATING-REVENUE>                                          2,135,706
<INCOME-TAX-EXPENSE>                                                  69,215
<OTHER-OPERATING-EXPENSES>                                         1,863,682
<TOTAL-OPERATING-EXPENSES>                                         1,932,897
<OPERATING-INCOME-LOSS>                                              202,809
<OTHER-INCOME-NET>                                                       655
<INCOME-BEFORE-INTEREST-EXPEN>                                       203,464
<TOTAL-INTEREST-EXPENSE>                                              86,265
<NET-INCOME>                                                         117,199
<PREFERRED-STOCK-DIVIDENDS>                                            4,601
<EARNINGS-AVAILABLE-FOR-COMM>                                        112,598
<COMMON-STOCK-DIVIDENDS>                                             (35,900)
<TOTAL-INTEREST-ON-BONDS>                                             77,090
<CASH-FLOW-OPERATIONS>                                                46,833
<EPS-BASIC>                                                           0.00
<EPS-DILUTED>                                                           0.00