<ARTICLE> UT
<CIK> 0000100122
<NAME> TUCSON ELECTRIC POWER COMPANY
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,926,616
<OTHER-PROPERTY-AND-INVEST>                     58,029
<TOTAL-CURRENT-ASSETS>                         416,428
<TOTAL-DEFERRED-CHARGES>                       326,026
<OTHER-ASSETS>                                  71,640
<TOTAL-ASSETS>                               2,798,739
<COMMON>                                       638,904
<CAPITAL-SURPLUS-PAID-IN>                            0
<RETAINED-EARNINGS>                          (423,633)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 215,271
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<LONG-TERM-DEBT-NET>                         1,215,120
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                  200,500
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                    883,607
<LEASES-CURRENT>                                15,238
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 269,003
<TOT-CAPITALIZATION-AND-LIAB>                2,798,739
<GROSS-OPERATING-REVENUE>                      161,003
<INCOME-TAX-EXPENSE>                           (1,937)
<OTHER-OPERATING-EXPENSES>                     139,058
<TOTAL-OPERATING-EXPENSES>                     137,121
<OPERATING-INCOME-LOSS>                         23,882
<OTHER-INCOME-NET>                               3,225
<INCOME-BEFORE-INTEREST-EXPEN>                  27,107
<TOTAL-INTEREST-EXPENSE>                        28,714
<NET-INCOME>                                   (1,607)
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                  (1,607)
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                           8,791
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0