<TABLE> <S> <C>
<ARTICLE> OPUR1
<MULTIPLIER> 1000
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-1999
<PERIOD-END> MAR-31-2000 MAR-31-2000
<PERIOD-TYPE> YEAR YEAR
<BOOK-VALUE> PER-BOOK PRO-FORMA
<TOTAL-NET-UTILITY-PLANT> 4,301,035 4,301,035
<OTHER-PROPERTY-AND-INVEST> 908,455 908,455
<TOTAL-CURRENT-ASSETS> 1,377,839 1,960,526
<TOTAL-DEFERRED-CHARGES> 4,153,679 5,404,747
<OTHER-ASSETS> 0 0
<TOTAL-ASSETS> 10,741,008 12,574,763
<COMMON> 742,731 742,731
<CAPITAL-SURPLUS-PAID-IN> 1,102,278 1,102,278
<RETAINED-EARNINGS> 642,092 642,092
<TOTAL-COMMON-STOCKHOLDERS-EQ> 2,363,999 2,363,999
119,789 79,789
136,200 116,200
<LONG-TERM-DEBT-NET> 2,443,989 1,980,864
<SHORT-TERM-NOTES> 984,000 887,604
<LONG-TERM-NOTES-PAYABLE> 0 0
<COMMERCIAL-PAPER-OBLIGATIONS> 0 0
<LONG-TERM-DEBT-CURRENT-PORT> 346,123 344,623
0 0
<CAPITAL-LEASE-OBLIGATIONS> 53,126 53,126
<LEASES-CURRENT> 115,285 115,285
<OTHER-ITEMS-CAPITAL-AND-LIAB> 4,055,395 6,510,171
<TOT-CAPITALIZATION-AND-LIAB> 10,741,008 12,574,763
<GROSS-OPERATING-REVENUE> 4,810,165 4,945,210
<INCOME-TAX-EXPENSE> 220,868 220,868
<OTHER-OPERATING-EXPENSES> 4,198,989 4,198,989
<TOTAL-OPERATING-EXPENSES> 4,419,857 4,419,857
<OPERATING-INCOME-LOSS> 390,308 525,353
<OTHER-INCOME-NET> (17,550) (17,550)
<INCOME-BEFORE-INTEREST-EXPEN> 372,758 507,803
<TOTAL-INTEREST-EXPENSE> 260,826 395,871
<NET-INCOME> 111,932 111,932
(21,573) (21,573)
<EARNINGS-AVAILABLE-FOR-COMM> 642,092 642,092
<COMMON-STOCK-DIVIDENDS> (27,480) (27,480)
<TOTAL-INTEREST-ON-BONDS> 246,517 381,562
<CASH-FLOW-OPERATIONS> 0 0
<EPS-BASIC> 0 0
<EPS-DILUTED> 0 0
</TABLE>
