<ARTICLE> UT <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> DEC-31-1998 <BOOK-VALUE> PER-BOOK <TOTAL-NET-UTILITY-PLANT> 2238700 <OTHER-PROPERTY-AND-INVEST> 0 <TOTAL-CURRENT-ASSETS> 494800 <TOTAL-DEFERRED-CHARGES> 277700 <OTHER-ASSETS> 844700 <TOTAL-ASSETS> 3855900 <COMMON> 1600 <CAPITAL-SURPLUS-PAID-IN> 704600 <RETAINED-EARNINGS> 677500 <TOTAL-COMMON-STOCKHOLDERS-EQ> 1383700 <PREFERRED-MANDATORY> 0 <PREFERRED> 22900 <LONG-TERM-DEBT-NET> 1065900 <SHORT-TERM-NOTES> 96000 <LONG-TERM-NOTES-PAYABLE> 0 <COMMERCIAL-PAPER-OBLIGATIONS> 99000 <LONG-TERM-DEBT-CURRENT-PORT> 4400 <PREFERRED-STOCK-CURRENT> 0 <CAPITAL-LEASE-OBLIGATIONS> 0 <LEASES-CURRENT> 0 <OTHER-ITEMS-CAPITAL-AND-LIAB> 1184000 <TOT-CAPITALIZATION-AND-LIAB> 3855900 <GROSS-OPERATING-REVENUE> 1281900 <INCOME-TAX-EXPENSE> 120400 <OTHER-OPERATING-EXPENSES> 976300 <TOTAL-OPERATING-EXPENSES> 1096700 <OPERATING-INCOME-LOSS> 185200 <OTHER-INCOME-NET> 97700 <INCOME-BEFORE-INTEREST-EXPEN> 282900 <TOTAL-INTEREST-EXPENSE> 92900 <NET-INCOME> 190000 <PREFERRED-STOCK-DIVIDENDS> 900 <EARNINGS-AVAILABLE-FOR-COMM> 189100 <COMMON-STOCK-DIVIDENDS> 143600 <TOTAL-INTEREST-ON-BONDS> 89600 <CASH-FLOW-OPERATIONS> 309600 <EPS-PRIMARY> 1.24 <EPS-DILUTED> 1.24