<ARTICLE> UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SOUTHWESTERN
PUBLIC SERVICE COMPANY CONDENSED BALANCE SHEET AS OF DECEMBER 31, 1999 AND
CONDENSED STATEMENTS OF INCOME AND CASH FLOWS FOR THE YEAR ENDED DECEMBER 31,
1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000092521
<NAME> SOUTHWESTERN PUBLIC SERVICE COMPANY
<MULTIPLIER> 1,000
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> DEC-31-1999
<BOOK-VALUE> PER-BOOK
<TOTAL-NET-UTILITY-PLANT> 1,773,815
<OTHER-PROPERTY-AND-INVEST> 124,982
<TOTAL-CURRENT-ASSETS> 156,690
<TOTAL-DEFERRED-CHARGES> 163,889
<OTHER-ASSETS> 0
<TOTAL-ASSETS> 2,219,376
<COMMON> 0
<CAPITAL-SURPLUS-PAID-IN> 353,099
<RETAINED-EARNINGS> 408,284
<TOTAL-COMMON-STOCKHOLDERS-EQ> 761,383
<PREFERRED-MANDATORY> 100,000
<PREFERRED> 0
<LONG-TERM-DEBT-NET> 605,875
<SHORT-TERM-NOTES> 0
<LONG-TERM-NOTES-PAYABLE> 0
<COMMERCIAL-PAPER-OBLIGATIONS> 177,746
<LONG-TERM-DEBT-CURRENT-PORT> 0
<PREFERRED-STOCK-CURRENT> 0
<CAPITAL-LEASE-OBLIGATIONS> 0
<LEASES-CURRENT> 0
<OTHER-ITEMS-CAPITAL-AND-LIAB> 574,372
<TOT-CAPITALIZATION-AND-LIAB> 2,219,376
<GROSS-OPERATING-REVENUE> 925,937
<INCOME-TAX-EXPENSE> 59,399
<OTHER-OPERATING-EXPENSES> 711,764
<TOTAL-OPERATING-EXPENSES> 771,163
<OPERATING-INCOME-LOSS> 154,774
<OTHER-INCOME-NET> 9,370
<INCOME-BEFORE-INTEREST-EXPEN> 164,144
<TOTAL-INTEREST-EXPENSE> 61,435
<NET-INCOME> 102,709
<PREFERRED-STOCK-DIVIDENDS> 0
<EARNINGS-AVAILABLE-FOR-COMM> 102,709
<COMMON-STOCK-DIVIDENDS> 84,243
<TOTAL-INTEREST-ON-BONDS> 50,018
<CASH-FLOW-OPERATIONS> 130,733
<EPS-BASIC> 0.00
<EPS-DILUTED> 0.00