<ARTICLE> UT
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               JUN-30-1995
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    5,394,119
<OTHER-PROPERTY-AND-INVEST>                     64,342
<TOTAL-CURRENT-ASSETS>                         463,910
<TOTAL-DEFERRED-CHARGES>                        71,325
<OTHER-ASSETS>                                 720,995
<TOTAL-ASSETS>                               6,714,691
<COMMON>                                       510,619
<CAPITAL-SURPLUS-PAID-IN>                      717,669
<RETAINED-EARNINGS>                          1,023,809
<TOTAL-COMMON-STOCKHOLDERS-EQ>               2,252,097
<PREFERRED-MANDATORY>                              624
<PREFERRED>                                    218,497
<LONG-TERM-DEBT-NET>                         1,790,728
<SHORT-TERM-NOTES>                              25,400
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                   35,000
<PREFERRED-STOCK-CURRENT>                           26
<CAPITAL-LEASE-OBLIGATIONS>                     61,250
<LEASES-CURRENT>                                30,181
<OTHER-ITEMS-CAPITAL-AND-LIAB>               2,300,888
<TOT-CAPITALIZATION-AND-LIAB>                6,714,691
<GROSS-OPERATING-REVENUE>                      960,690
<INCOME-TAX-EXPENSE>                            74,070
<OTHER-OPERATING-EXPENSES>                     712,154
<TOTAL-OPERATING-EXPENSES>                     786,224
<OPERATING-INCOME-LOSS>                        174,466
<OTHER-INCOME-NET>                               4,441
<INCOME-BEFORE-INTEREST-EXPEN>                 178,907
<TOTAL-INTEREST-EXPENSE>                        64,648
<NET-INCOME>                                   114,259
<PREFERRED-STOCK-DIVIDENDS>                      6,626
<EARNINGS-AVAILABLE-FOR-COMM>                  107,633
<COMMON-STOCK-DIVIDENDS>                       124,591
<TOTAL-INTEREST-ON-BONDS>                      115,192
<CASH-FLOW-OPERATIONS>                         249,987
<EPS-PRIMARY>                                     1.05
<EPS-DILUTED>                                     1.05