<ARTICLE> UT
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,289,198
<OTHER-PROPERTY-AND-INVEST>                    901,140
<TOTAL-CURRENT-ASSETS>                         509,652
<TOTAL-DEFERRED-CHARGES>                     2,336,891
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                               5,036,881
<COMMON>                                        73,119
<CAPITAL-SURPLUS-PAID-IN>                      927,154
<RETAINED-EARNINGS>                            816,582
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,445,953<F1>
<PREFERRED-MANDATORY>                            3,000
<PREFERRED>                                    245,561<F2>
<LONG-TERM-DEBT-NET>                         1,434,607
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                        4,404
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                   48,025
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                     40,826
<LEASES-CURRENT>                                20,762
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,793,743
<TOT-CAPITALIZATION-AND-LIAB>                5,036,881
<GROSS-OPERATING-REVENUE>                      596,785
<INCOME-TAX-EXPENSE>                            46,048<F3>
<OTHER-OPERATING-EXPENSES>                     470,019
<TOTAL-OPERATING-EXPENSES>                     470,019
<OPERATING-INCOME-LOSS>                        126,766
<OTHER-INCOME-NET>                              59,547
<INCOME-BEFORE-INTEREST-EXPEN>                 186,313
<TOTAL-INTEREST-EXPENSE>                        54,931<F4>
<NET-INCOME>                                    85,334<F5>
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   85,334<F5>
<COMMON-STOCK-DIVIDENDS>                        55,953
<TOTAL-INTEREST-ON-BONDS>                       40,902
<CASH-FLOW-OPERATIONS>                         135,583
<EPS-PRIMARY>                                     1.10<F6>
<EPS-DILUTED>                                     1.08<F6>
<FN>
<F1>Includes $(370,901) of Treasury Stock at cost
<F2>Includes $12,470 of Preference Stock
<F3>Non-Operating Expense
<F4>Includes $8,563 of Preferred and Preference Stock Dividends
<F5>Excludes $82,548 extraordinary restructuring charge (net of taxes)
<F6>Excludes ($1.06) effect of extraordinary restructuring charge
</FN>