<ARTICLE> UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM PUBLIC
SERVICE COMPANY OF COLORADO AND SUBSIDIARIES CONSOLIDATED CONDENSED BALANCE
SHEET AS OF DECEMBER 31, 1999 AND CONSOLIDATED  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> 0000081018
<NAME> PUBLIC SERVICE COMPANY OF COLORADO
<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>                    4,372,536
<OTHER-PROPERTY-AND-INVEST>                    205,299
<TOTAL-CURRENT-ASSETS>                         704,151
<TOTAL-DEFERRED-CHARGES>                       306,956
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                               5,588,942
<COMMON>                                             0
<CAPITAL-SURPLUS-PAID-IN>                    1,414,835
<RETAINED-EARNINGS>                            346,050
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,760,885
<PREFERRED-MANDATORY>                          194,000
<PREFERRED>                                          0
<LONG-TERM-DEBT-NET>                         1,721,959
<SHORT-TERM-NOTES>                                 561
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                 355,631
<LONG-TERM-DEBT-CURRENT-PORT>                  132,823
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                     54,257
<LEASES-CURRENT>                                 2,308
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,423,083
<TOT-CAPITALIZATION-AND-LIAB>                5,588,942
<GROSS-OPERATING-REVENUE>                    2,226,956
<INCOME-TAX-EXPENSE>                            96,574
<OTHER-OPERATING-EXPENSES>                   1,774,876
<TOTAL-OPERATING-EXPENSES>                   1,871,450
<OPERATING-INCOME-LOSS>                        355,506
<OTHER-INCOME-NET>                               4,933
<INCOME-BEFORE-INTEREST-EXPEN>                 360,439
<TOTAL-INTEREST-EXPENSE>                       156,174
<NET-INCOME>                                   204,265
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                  204,265
<COMMON-STOCK-DIVIDENDS>                       183,428
<TOTAL-INTEREST-ON-BONDS>                      125,106
<CASH-FLOW-OPERATIONS>                         475,626
<EPS-BASIC>                                       0.00
<EPS-DILUTED>                                     0.00