<ARTICLE> UT
<MULTIPLIER>                    1,000,000

                             
<PERIOD-TYPE>                      6-MOS
<FISCAL-YEAR-END>                  DEC-31-1999
<PERIOD-END>                       JUN-30-1999
<BOOK-VALUE>                       PER-BOOK
<TOTAL-NET-UTILITY-PLANT>            4,838
<OTHER-PROPERTY-AND-INVEST>            555
<TOTAL-CURRENT-ASSETS>               1,777
<TOTAL-DEFERRED-CHARGES>             5,972
<OTHER-ASSETS>                         205
<TOTAL-ASSETS>                      13,347
<COMMON>                             2,109
<CAPITAL-SURPLUS-PAID-IN>                1
<RETAINED-EARNINGS>                   (423)
<TOTAL-COMMON-STOCKHOLDERS-EQ>       1,687
<PREFERRED-MANDATORY>                   93
<PREFERRED>                            138
<LONG-TERM-DEBT-NET>                 6,092
<SHORT-TERM-NOTES>                       0
<LONG-TERM-NOTES-PAYABLE>                0
<COMMERCIAL-PAPER-OBLIGATIONS>         226
<LONG-TERM-DEBT-CURRENT-PORT>          146
<PREFERRED-STOCK-CURRENT>                0
<CAPITAL-LEASE-OBLIGATIONS>              1
<LEASES-CURRENT>                         0
<OTHER-ITEMS-CAPITAL-AND-LIAB>       4,964
<TOT-CAPITALIZATION-AND-LIAB>       13,347
<GROSS-OPERATING-REVENUE>            2,451
<INCOME-TAX-EXPENSE>                   139
<OTHER-OPERATING-EXPENSES>           1,827
<TOTAL-OPERATING-EXPENSES>           1,966
<OPERATING-INCOME-LOSS>                485
<OTHER-INCOME-NET>                     (47)
<INCOME-BEFORE-INTEREST-EXPEN>         438
<TOTAL-INTEREST-EXPENSE>               203
<NET-INCOME>                           211
<PREFERRED-STOCK-DIVIDENDS>              7
<EARNINGS-AVAILABLE-FOR-COMM>          204
<COMMON-STOCK-DIVIDENDS>               103
<TOTAL-INTEREST-ON-BONDS>              188
<CASH-FLOW-OPERATIONS>                 252
<EPS-BASIC>                          .98
<EPS-DILUTED>                          .98