<ARTICLE> OPUR1 <MULTIPLIER> 1000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> JUN-30-1999 <BOOK-VALUE> PER-BOOK <TOTAL-NET-UTILITY-PLANT> 458418 <OTHER-PROPERTY-AND-INVEST> 2379 <TOTAL-CURRENT-ASSETS> 127263 <TOTAL-DEFERRED-CHARGES> 319506 <OTHER-ASSETS> 13139 <TOTAL-ASSETS> 920705 <COMMON> 58485 <CAPITAL-SURPLUS-PAID-IN> 38004 <RETAINED-EARNINGS> 109530 <TOTAL-COMMON-STOCKHOLDERS-EQ> 206019 <PREFERRED-MANDATORY> 28177 <PREFERRED> 0 <LONG-TERM-DEBT-NET> 162567 <SHORT-TERM-NOTES> 1680 <LONG-TERM-NOTES-PAYABLE> 0 <COMMERCIAL-PAPER-OBLIGATIONS> 0 <LONG-TERM-DEBT-CURRENT-PORT> 0 <PREFERRED-STOCK-CURRENT> 0 <CAPITAL-LEASE-OBLIGATIONS> 0 <LEASES-CURRENT> 0 <OTHER-ITEMS-CAPITAL-AND-LIAB> 522262 <TOT-CAPITALIZATION-AND-LIAB> 920705 <GROSS-OPERATING-REVENUE> 209899 <INCOME-TAX-EXPENSE> 9130 <OTHER-OPERATING-EXPENSES> 182073 <TOTAL-OPERATING-EXPENSES> 191203 <OPERATING-INCOME-LOSS> 18696 <OTHER-INCOME-NET> 1221 <INCOME-BEFORE-INTEREST-EXPEN> 19917 <TOTAL-INTEREST-EXPENSE> 8187 <NET-INCOME> 11730 <PREFERRED-STOCK-DIVIDENDS> 994 <EARNINGS-AVAILABLE-FOR-COMM> 10736 <COMMON-STOCK-DIVIDENDS> 7533 <TOTAL-INTEREST-ON-BONDS> 5765 <CASH-FLOW-OPERATIONS> 13370 <EPS-BASIC> 0 <EPS-DILUTED> 0