<ARTICLE>                                           UT
<LEGEND>
          Public Utility Companies and Public Utility Holding Companies
                             (Thousands of Dollars)
                       Fiscal year ended December 31, 1997
                For Period January 1, 1997 through June 30, 1997
                                Six Months Ended
</LEGEND>
<MULTIPLIER>                                   1000
<CURRENCY>                                     U.S. Dollar
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                                                    DEC-31-1997
<PERIOD-START>                                                       JAN-01-1997
<PERIOD-END>                                                         JUN-30-1997
<EXCHANGE-RATE>                                                                1
<BOOK-VALUE>                                                            PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                             $4,669,933
<OTHER-PROPERTY-AND-INVEST>                                              591,765
<TOTAL-CURRENT-ASSETS>                                                   468,072
<TOTAL-DEFERRED-CHARGES>                                               1,223,589
<OTHER-ASSETS>                                                                 0
<TOTAL-ASSETS>                                                         6,953,359
<COMMON>                                                               1,556,341
<CAPITAL-SURPLUS-PAID-IN>                                                      0
<RETAINED-EARNINGS>                                                      355,765
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                         1,912,106
<PREFERRED-MANDATORY>                                                     29,110
<PREFERRED>                                                              143,493
<LONG-TERM-DEBT-NET>                                                   2,296,883
<SHORT-TERM-NOTES>                                                             0
<LONG-TERM-NOTES-PAYABLE>                                                      0
<COMMERCIAL-PAPER-OBLIGATIONS>                                           228,000
<LONG-TERM-DEBT-CURRENT-PORT>                                            107,002
<PREFERRED-STOCK-CURRENT>                                                      0
<CAPITAL-LEASE-OBLIGATIONS>                                                    0
<LEASES-CURRENT>                                                               0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                         2,236,765
<TOT-CAPITALIZATION-AND-LIAB>                                          6,953,359
<GROSS-OPERATING-REVENUE>                                                887,481
<INCOME-TAX-EXPENSE>                                                      60,172
<OTHER-OPERATING-EXPENSES>                                               470,207
<TOTAL-OPERATING-EXPENSES>                                               654,986
<OPERATING-INCOME-LOSS>                                                  232,495
<OTHER-INCOME-NET>                                                      (79,759)
<INCOME-BEFORE-INTEREST-EXPEN>                                                 0
<TOTAL-INTEREST-EXPENSE>                                                  81,984
<NET-INCOME>                                                              92,564
<PREFERRED-STOCK-DIVIDENDS>                                                    0
<EARNINGS-AVAILABLE-FOR-COMM>                                             92,564
<COMMON-STOCK-DIVIDENDS>                                                  47,441
<TOTAL-INTEREST-ON-BONDS>                                                 63,731
<CASH-FLOW-OPERATIONS>                                                   261,258
<EPS-PRIMARY>                                                               1.07
<EPS-DILUTED>                                                                  0