<ARTICLE> UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,715,242
<OTHER-PROPERTY-AND-INVEST>                     31,389
<TOTAL-CURRENT-ASSETS>                         550,230
<TOTAL-DEFERRED-CHARGES>                       929,147
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                               3,226,008
<COMMON>                                             0
<CAPITAL-SURPLUS-PAID-IN>                      475,700
<RETAINED-EARNINGS>                            254,371
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 730,071
<PREFERRED-MANDATORY>                           49,399
<PREFERRED>                                     43,000
<LONG-TERM-DEBT-NET>                         1,194,279
<SHORT-TERM-NOTES>                              61,500
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                  133,428
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                          0
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,014,331
<TOT-CAPITALIZATION-AND-LIAB>                3,226,008
<GROSS-OPERATING-REVENUE>                      775,735
<INCOME-TAX-EXPENSE>                            29,681
<OTHER-OPERATING-EXPENSES>                     652,197
<TOTAL-OPERATING-EXPENSES>                     681,878
<OPERATING-INCOME-LOSS>                         93,857
<OTHER-INCOME-NET>                               3,501
<INCOME-BEFORE-INTEREST-EXPEN>                  97,358
<TOTAL-INTEREST-EXPENSE>                        50,550
<NET-INCOME>                                    46,808
<PREFERRED-STOCK-DIVIDENDS>                      2,980
<EARNINGS-AVAILABLE-FOR-COMM>                        0
<COMMON-STOCK-DIVIDENDS>                        15,000
<TOTAL-INTEREST-ON-BONDS>                       51,079
<CASH-FLOW-OPERATIONS>                          65,299
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0