<ARTICLE> UT
<CIK> 0000100122
<NAME> TUCSON ELECTRIC POWER COMPANY
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,915,590
<OTHER-PROPERTY-AND-INVEST>                     62,978
<TOTAL-CURRENT-ASSETS>                         257,025
<TOTAL-DEFERRED-CHARGES>                       313,528
<OTHER-ASSETS>                                  79,462     
<TOTAL-ASSETS>                               2,628,583
<COMMON>                                       640,211
<CAPITAL-SURPLUS-PAID-IN>                            0
<RETAINED-EARNINGS>                          (410,350)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 229,861
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<LONG-TERM-DEBT-NET>                         1,184,423
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                    1,725
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                    889,543
<LEASES-CURRENT>                                11,647
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 311,384
<TOT-CAPITALIZATION-AND-LIAB>                2,628,583
<GROSS-OPERATING-REVENUE>                      768,990
<INCOME-TAX-EXPENSE>                            18,372
<OTHER-OPERATING-EXPENSES>                     615,116
<TOTAL-OPERATING-EXPENSES>                     633,488
<OPERATING-INCOME-LOSS>                        135,502
<OTHER-INCOME-NET>                              23,774
<INCOME-BEFORE-INTEREST-EXPEN>                 159,276
<TOTAL-INTEREST-EXPENSE>                       117,600
<NET-INCOME>                                    41,676
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   41,676
<COMMON-STOCK-DIVIDENDS>                        30,000
<TOTAL-INTEREST-ON-BONDS>                       72,672
<CASH-FLOW-OPERATIONS>                         181,858
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0