<ARTICLE>  UT
<CIK>  0000081027
<NAME>  PUBLIC SERVICE COMPANY OF OKLAHOMA
<MULTIPLIER> 1,000
       
                                         
<PERIOD-TYPE>                               12-MOS
<FISCAL-YEAR-END>                                      DEC-31-1997
<PERIOD-END>                                           DEC-31-1997
<BOOK-VALUE>                                              PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                1,308,586
<OTHER-PROPERTY-AND-INVEST>                                 20,764
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<TOTAL-DEFERRED-CHARGES>                                     2,755
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<TOTAL-ASSETS>                                           1,447,681
<COMMON>                                                   157,230
<CAPITAL-SURPLUS-PAID-IN>                                  180,000
<RETAINED-EARNINGS>                                        136,996
<TOTAL-COMMON-STOCKHOLDERS-EQ>                             474,226
<PREFERRED-MANDATORY>                                            0
<PREFERRED>                                                  5,287
<LONG-TERM-DEBT-NET>                                       456,821
<SHORT-TERM-NOTES>                                           4,874
<LONG-TERM-NOTES-PAYABLE>                                   40,000
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<LEASES-CURRENT>                                                 0
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<INCOME-TAX-EXPENSE>                                        20,763
<OTHER-OPERATING-EXPENSES>                                 610,151
<TOTAL-OPERATING-EXPENSES>                                 630,914
<OPERATING-INCOME-LOSS>                                     81,776
<OTHER-INCOME-NET>                                           1,649
<INCOME-BEFORE-INTEREST-EXPEN>                              83,425
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<NET-INCOME>                                                46,206
<PREFERRED-STOCK-DIVIDENDS>                                    364
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<COMMON-STOCK-DIVIDENDS>                                    59,000
<TOTAL-INTEREST-ON-BONDS>                                   28,044
<CASH-FLOW-OPERATIONS>                                     121,654
<EPS-PRIMARY>                                                 0.00
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