<ARTICLE>  UT
<MULTIPLIER> 1,000
                                
<PERIOD-TYPE>                      3-MOS
<FISCAL-YEAR-END>                      Dec-31-2000
<PERIOD-END>                           Mar-31-2000
<BOOK-VALUE>                             PER-BOOK
<TOTAL-NET-UTILITY-PLANT>               2,342,319
<OTHER-PROPERTY-AND-INVEST>               402,925
<TOTAL-CURRENT-ASSETS>                    147,390
<TOTAL-DEFERRED-CHARGES>                  210,701
<OTHER-ASSETS>                                  0
<TOTAL-ASSETS>                          3,103,335
<COMMON>                                  449,697
<CAPITAL-SURPLUS-PAID-IN>                  (1,668)
<RETAINED-EARNINGS>                       423,500
<TOTAL-COMMON-STOCKHOLDERS-EQ>            871,529
<PREFERRED-MANDATORY>                          62
<PREFERRED>                                39,000
<LONG-TERM-DEBT-NET>                      895,043
<SHORT-TERM-NOTES>                              0
<LONG-TERM-NOTES-PAYABLE>                       0
<COMMERCIAL-PAPER-OBLIGATIONS>             90,900
<LONG-TERM-DEBT-CURRENT-PORT>             143,858
<PREFERRED-STOCK-CURRENT>                       0
<CAPITAL-LEASE-OBLIGATIONS>                     0
<LEASES-CURRENT>                                0
<OTHER-ITEMS-CAPITAL-AND-LIAB>          1,062,943
<TOT-CAPITALIZATION-AND-LIAB>           3,103,335
<GROSS-OPERATING-REVENUE>                 190,333
<INCOME-TAX-EXPENSE>                        4,563
<OTHER-OPERATING-EXPENSES>                165,795
<TOTAL-OPERATING-EXPENSES>                170,358
<OPERATING-INCOME-LOSS>                    19,975
<OTHER-INCOME-NET>                         (2,048)
<INCOME-BEFORE-INTEREST-EXPEN>             17,927
<TOTAL-INTEREST-EXPENSE>                   17,352
<NET-INCOME>                               30,648
<PREFERRED-STOCK-DIVIDENDS>                   412
<EARNINGS-AVAILABLE-FOR-COMM>              30,236
<COMMON-STOCK-DIVIDENDS>                   25,687
<TOTAL-INTEREST-ON-BONDS>                  12,447
<CASH-FLOW-OPERATIONS>                     71,487
<EPS-BASIC>                                0.49
<EPS-DILUTED>                                0.49