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

                              
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                           DEC-31-1999
<PERIOD-END>                                DEC-31-1999
<BOOK-VALUE>                                   PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                        23,640
<OTHER-PROPERTY-AND-INVEST>                      10,392
<TOTAL-CURRENT-ASSETS>                            3,900
<TOTAL-DEFERRED-CHARGES>                            482
<OTHER-ASSETS>                                    2,327
<TOTAL-ASSETS>                                   40,741
<COMMON>                                          6,795
<CAPITAL-SURPLUS-PAID-IN>                             0
<RETAINED-EARNINGS>                               1,691
<TOTAL-COMMON-STOCKHOLDERS-EQ>                    8,334
<PREFERRED-MANDATORY>                             1,360
<PREFERRED>                                         190
<LONG-TERM-DEBT-NET>                             16,325
<SHORT-TERM-NOTES>                                1,385
<LONG-TERM-NOTES-PAYABLE>                             0
<COMMERCIAL-PAPER-OBLIGATIONS>                    1,903
<LONG-TERM-DEBT-CURRENT-PORT>                     1,288
<PREFERRED-STOCK-CURRENT>                             0
<CAPITAL-LEASE-OBLIGATIONS>                           0
<LEASES-CURRENT>                                      0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                    9,956
<TOT-CAPITALIZATION-AND-LIAB>                    40,741
<GROSS-OPERATING-REVENUE>                        17,118
<INCOME-TAX-EXPENSE>                                449
<OTHER-OPERATING-EXPENSES>                       14,524
<TOTAL-OPERATING-EXPENSES>                       14,524
<OPERATING-INCOME-LOSS>                           2,594
<OTHER-INCOME-NET>                                  262
<INCOME-BEFORE-INTEREST-EXPEN>                    2,856
<TOTAL-INTEREST-EXPENSE>                          1,556
<NET-INCOME>                                        985
<PREFERRED-STOCK-DIVIDENDS>                           0
<EARNINGS-AVAILABLE-FOR-COMM>                       985
<COMMON-STOCK-DIVIDENDS>                            639
<TOTAL-INTEREST-ON-BONDS>                           425
<CASH-FLOW-OPERATIONS>                            2,176
<EPS-BASIC>                                        3.53
<EPS-DILUTED>                                      3.53