<ARTICLE> UT <LEGEND> EXHIBIT 27.01 THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE STATEMENTS OF INCOME, BALANCE SHEETS, STATEMENTS OF CAPITALIZATION, STATEMENTS OF CHANGES IN DIVISIONAL EQUITY AND STATEMENTS OF CASH FLOWS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> DEC-31-1999 <BOOK-VALUE> PER-BOOK <TOTAL-NET-UTILITY-PLANT> 3,595,127 <OTHER-PROPERTY-AND-INVEST> 560,017 <TOTAL-CURRENT-ASSETS> 684,496 <TOTAL-DEFERRED-CHARGES> 208,176 <OTHER-ASSETS> 119,890 <TOTAL-ASSETS> 5,167,706 <COMMON> 0 <CAPITAL-SURPLUS-PAID-IN> 145,613 <RETAINED-EARNINGS> 1,052,088 <TOTAL-COMMON-STOCKHOLDERS-EQ> 1,186,095<F1> <PREFERRED-MANDATORY> 200,000 <PREFERRED> 0 <LONG-TERM-DEBT-NET> 1,186,586 <SHORT-TERM-NOTES> 193 <LONG-TERM-NOTES-PAYABLE> 0 <COMMERCIAL-PAPER-OBLIGATIONS> 420,000 <LONG-TERM-DEBT-CURRENT-PORT> 255,718 <PREFERRED-STOCK-CURRENT> 0 <CAPITAL-LEASE-OBLIGATIONS> 0 <LEASES-CURRENT> 0 <OTHER-ITEMS-CAPITAL-AND-LIAB> 1,907,508<F1> <TOT-CAPITALIZATION-AND-LIAB> 5,167,706 <GROSS-OPERATING-REVENUE> 2,633,048 <INCOME-TAX-EXPENSE> 97,431 <OTHER-OPERATING-EXPENSES> 2,254,793 <TOTAL-OPERATING-EXPENSES> 2,254,793 <OPERATING-INCOME-LOSS> 378,255 <OTHER-INCOME-NET> (16,820)<F2> <INCOME-BEFORE-INTEREST-EXPEN> 279,754 <TOTAL-INTEREST-EXPENSE> 105,024 <NET-INCOME> 158,980 <PREFERRED-STOCK-DIVIDENDS> 0 <EARNINGS-AVAILABLE-FOR-COMM> 158,980 <COMMON-STOCK-DIVIDENDS> 0 <TOTAL-INTEREST-ON-BONDS> 84,841 <CASH-FLOW-OPERATIONS> 556,549 <EPS-BASIC> 0 <EPS-DILUTED> 0 <FN> <F1>NOTE 1 - ($11,606) THOUSAND OF COMMON STOCKHOLDERS' EQUITY IS CLASSIFIED AS OTHER ITEMS-CAPITALIZATION AND LIABILITIES. THIS REPRESENTS LEVERAGED FORMER NSP COMMON STOCK HELD BY THE EMPLOYEE STOCK OWNERSHIP PLAN. <F2>NOTE 2 - INCLUDES OTHER INCOME (EXPENSE) AND DISTRIBUTIONS ON REDEEMABLE PREFERRED SECURITIES OF SUBSIDIARY TRUST. </FN>