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

                                       
<PERIOD-TYPE>                           6-MOS
<FISCAL-YEAR-END>                     DEC-31-2000
<PERIOD-END>                          JUN-30-2000
<BOOK-VALUE>                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>               4,991
<OTHER-PROPERTY-AND-INVEST>               767
<TOTAL-CURRENT-ASSETS>                  1,371
<TOTAL-DEFERRED-CHARGES>                6,229
<OTHER-ASSETS>                            157
<TOTAL-ASSETS>                         13,515
<COMMON>                                1,380
<CAPITAL-SURPLUS-PAID-IN>                   3
<RETAINED-EARNINGS>                        89
<TOTAL-COMMON-STOCKHOLDERS-EQ>          1,472
<PREFERRED-MANDATORY>                      56
<PREFERRED>                               137
<LONG-TERM-DEBT-NET>                    6,431
<SHORT-TERM-NOTES>                          0
<LONG-TERM-NOTES-PAYABLE>                   0
<COMMERCIAL-PAPER-OBLIGATIONS>            351
<LONG-TERM-DEBT-CURRENT-PORT>             220
<PREFERRED-STOCK-CURRENT>                   0
<CAPITAL-LEASE-OBLIGATIONS>                 0
<LEASES-CURRENT>                            0
<OTHER-ITEMS-CAPITAL-AND-LIAB>          4,848
<TOT-CAPITALIZATION-AND-LIAB>          13,515
<GROSS-OPERATING-REVENUE>               2,716
<INCOME-TAX-EXPENSE>                      174
<OTHER-OPERATING-EXPENSES>              2,052
<TOTAL-OPERATING-EXPENSES>              2,226
<OPERATING-INCOME-LOSS>                   490
<OTHER-INCOME-NET>                         19
<INCOME-BEFORE-INTEREST-EXPEN>            509
<TOTAL-INTEREST-EXPENSE>                  220
<NET-INCOME>                              286
<PREFERRED-STOCK-DIVIDENDS>                 5
<EARNINGS-AVAILABLE-FOR-COMM>             281
<COMMON-STOCK-DIVIDENDS>                   88
<TOTAL-INTEREST-ON-BONDS>                 220
<CASH-FLOW-OPERATIONS>                    339
<EPS-BASIC>                              1.58
<EPS-DILUTED>                            1.57