<ARTICLE>                                           UT
<MULTIPLIER>                                   1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-START>                                 JAN-01-2000
<PERIOD-END>                                   JUN-30-2000
<BOOK-VALUE>                                   PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      518,852
<OTHER-PROPERTY-AND-INVEST>                    138,361
<TOTAL-CURRENT-ASSETS>                         209,790
<TOTAL-DEFERRED-CHARGES>                       23,554
<OTHER-ASSETS>                                 906,405
<TOTAL-ASSETS>                                 1,796,962
<COMMON>                                       283,221
<CAPITAL-SURPLUS-PAID-IN>                      174
<RETAINED-EARNINGS>                            189,866
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 473,261
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<LONG-TERM-DEBT-NET>                           522,184
<SHORT-TERM-NOTES>                             0
<LONG-TERM-NOTES-PAYABLE>                      14,262
<COMMERCIAL-PAPER-OBLIGATIONS>                 0
<LONG-TERM-DEBT-CURRENT-PORT>                  859
<PREFERRED-STOCK-CURRENT>                      0
<CAPITAL-LEASE-OBLIGATIONS>                    15,932
<LEASES-CURRENT>                               390
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 770,074
<TOT-CAPITALIZATION-AND-LIAB>                  1,796,962
<GROSS-OPERATING-REVENUE>                      344,989
<INCOME-TAX-EXPENSE>                           28,898
<OTHER-OPERATING-EXPENSES>                     264,769
<TOTAL-OPERATING-EXPENSES>                     293,667
<OPERATING-INCOME-LOSS>                        51,322
<OTHER-INCOME-NET>                             3,052
<INCOME-BEFORE-INTEREST-EXPEN>                 54,374
<TOTAL-INTEREST-EXPENSE>                       19,713
<NET-INCOME>                                   34,661
<PREFERRED-STOCK-DIVIDENDS>                    0
<EARNINGS-AVAILABLE-FOR-COMM>                  34,661
<COMMON-STOCK-DIVIDENDS>                       20,265
<TOTAL-INTEREST-ON-BONDS>                      31,578
<CASH-FLOW-OPERATIONS>                         30,032
<EPS-BASIC>                                    2.46
<EPS-DILUTED>                                  2.46