PUBLIC SERVICE CO OF COLORADO
10-Q, 2000-05-15
ELECTRIC & OTHER SERVICES COMBINED
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

(Mark One)
  [X]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
           THE SECURITIES EXCHANGE ACT OF 1934

           For the quarterly period ended March 31, 2000

                      OR

 [   ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
           OF THE SECURITIES EXCHANGE ACT OF 1934

           For the transition period from _____________   to   ____________

            Exact name of registrant as specified in its charter,
            State or other jurisdiction of incorporation or
            organization, Address of principal executive offices
Commission  and Registrant's Telephone Number,                     IRS Employer
File Number including area code                               Identification No.
- ----------- ------------------------------                    ------------------

1-12927    NEW CENTURY ENERGIES, INC.                            84-1334327
           (a Delaware Corporation)
           1225 17th Street
           Denver, Colorado  80202
           Telephone (303) 571-7511

1-3280     PUBLIC SERVICE COMPANY OF COLORADO                    84-0296600
           (a Colorado Corporation)
           1225 17th Street
           Denver, Colorado  80202
           Telephone (303) 571-7511

1-3789     SOUTHWESTERN PUBLIC SERVICE COMPANY                   75-0575400
           (a New Mexico Corporation)
           Tyler at Sixth
           Amarillo, Texas  79101
           Telephone (303) 571-7511
                                    -------------------

      Indicate by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X No

      On May 10, 2000,  116,484,880  shares of the New Century Energies,  Inc.'s
Common Stock were  outstanding.  The aggregate market value of this common stock
held by nonaffiliates  based on the closing price on the New York Stock Exchange
was approximately $3,953,205,615.

Public Service Company of Colorado and Southwestern  Public Service Company meet
the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and
are therefore filing this Form 10-Q with the reduced disclosure format specified
in General Instruction H (2) to such Form 10-Q.




<PAGE>


                                Table of Contents

                         PART I - FINANCIAL INFORMATION

Item l. Financial Statements ............................................    1

Item 2. Management's Discussion and Analysis of Financial Condition and
        Results of Operations ...........................................   34


                          PART II - OTHER INFORMATION


Item 1.  Legal Proceedings................................................. 47

Item 6.  Exhibits and Reports on Form 8-K.................................. 47








This  combined  Form 10-Q is  separately  filed by New Century  Energies,  Inc.,
Public Service  Company of Colorado and  Southwestern  Public  Service  Company.
Information contained herein relating to any individual company is filed by such
company on its own behalf.  Each  registrant  makes  representations  only as to
itself and makes no other representations  whatsoever as to information relating
to the other registrants.

This report should be read in its  entirety.  No one section of the report deals
with all aspects of the subject matter.

                           FORWARD-LOOKING INFORMATION

The  following  discussions  include  "forward-looking  statements"  within  the
meaning of Section  27A of the  Securities  Act of 1933 and  Section  21E of the
Securities  Exchange  Act of  1934.  Investors  and  prospective  investors  are
cautioned that the forward-looking  statements  contained herein with respect to
the  revenues,   earnings,  capital  expenditures,   resolution  and  impact  of
litigation,  competitive performance, or other prospects for the business of New
Century Energies,  Inc., Public Service Company of Colorado and/or  Southwestern
Public  Service  Company or their  affiliated  companies,  including any and all
underlying  assumptions  and other  statements that are other than statements of
historical  fact, may be influenced by factors that could cause actual  outcomes
and results to be materially different than projected. Such factors include, but
are not  limited to, the effects of weather,  future  economic  conditions,  the
performance  of  generating  units,  fuel  prices and  availability,  regulatory
decisions  and the  effects of changes in state and  federal  laws,  the pace of
deregulation of domestic retail natural gas and electricity  markets, the timing
and  extent of change  in  commodity  prices  for all forms of  energy,  capital
spending  requirements,  the evolution of  competition,  earnings  retention and
dividend payout policies,  changes in accounting standards,  the consummation of
the proposed  merger with Northern  States Power Company  and/or other  factors.
From time to time,  New  Century  Energies,  Inc.,  Public  Service  Company  of
Colorado and  Southwestern  Public Service Company may publish or otherwise make
available  forward-looking   statements.  All  such  subsequent  forward-looking
statements,  whether  written or oral and  whether  made by or on behalf of each
company, are also expressly qualified by these cautionary statements.


                                       i
<PAGE>


TERMS
The abbreviations or acronyms used in the text and notes are defined below:

Abbreviation or Acronym                                           Term
- ----------------------------------------------------------------------
AEP......................................................American Electric Power
Cheyenne..................................Cheyenne Light, Fuel and Power Company
CPUC....................The Public Utilities Commission of the State of Colorado
Denver District Court....District Court in and for the City and County of Denver
DSM.......................................................Demand Side Management
Dth....................................................................Dekatherm
EPA.........................................U.S. Environmental Protection Agency
e prime...........................................e prime, inc. and subsidiaries
FERC........................................Federal Energy Regulatory Commission
Fort St. Vrain.......................Fort St. Vrain Electric Generating Station,
                                           formerly a nuclear generating station
GCA..........................................................Gas Cost Adjustment
ICA....................................................Incentive Cost Adjustment
IRS.....................................................Internal Revenue Service
Kwh................................................................kilowatt-hour
PSCo/SPS Merger........................business combination between PSCo and SPS
NCE or Company........................................New Century Energies, Inc.
NCE/NSP Merger..........................business combination between NCE and NSP
NCI..............................................New Century International, Inc.
NMPRC....................................New Mexico Public Regulation Commission
NOx...............................................................Nitrogen Oxide
NSP................................................Northern States Power Company
PSCo..........................................Public Service Company of Colorado
PSRI.......................................................PSR Investments, Inc.
PUHCA.....................Public Utility Holding Company Act of 1935, as amended
PUCT..........................................Public Utility Commission of Texas
QF...........................................................Qualifying Facility
SEC...........................................Securities and Exchange Commission
SO2...............................................................Sulfur Dioxide
SPS..........................................Southwestern Public Service Company
SFAS 71.....................Statement of Financial Accounting Standards No. 71 -
                     "Accounting for the Effects of Certain Types of Regulation"
SFAS 112...................Statement of Financial Accounting Standards No. 112 -
                             "Employers' Accounting for Postemployment Benefits"
Thunder Basin.........................................Thunder Basin Coal Company
Y2K....................................................................Year 2000
Yorkshire Electricity............................Yorkshire Electricity Group plc
Yorkshire Power.......................................Yorkshire Power Group Ltd.


                                       ii
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)


                                     ASSETS

                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----
Property, plant and equipment, at cost:
   Electric .......................................... $7,605,066   $ 7,496,942
   Gas................................................  1,347,766     1,327,048
   Steam and other....................................    116,749       113,050
   Common to all departments..........................    475,831       464,059
   Construction in progress...........................    360,305       400,439
                                                          -------       -------
                                                        9,905,717     9,801,538
   Less: accumulated depreciation ....................  3,619,950     3,540,516
                                                        ---------     ---------
     Total property, plant and equipment..............  6,285,767     6,261,022
                                                        ---------     ---------



Investments, at cost:
   Investment in Yorkshire Power and other
     unconsolidated subsidiaries (Note 3) ............    413,094       391,754
   Other..............................................     86,300        89,404
                                                          -------        ------
    Total investments.................................    499,394       481,158
                                                          -------       -------


Current assets:
   Cash and temporary cash investments................     48,483        83,763
   Accounts receivable, less reserve for uncollectible
    accounts ($4,494 at March 31, 2000; $4,601 at
    December 31, 1999)................................    346,816       371,116
   Accrued unbilled revenues..........................    158,216       266,537
   Recoverable purchased gas and electric energy costs     35,797        46,863
   Materials and supplies, at average cost............     77,077        75,021
   Fuel inventory, at average cost....................     33,101        29,618
   Gas in underground storage, at cost (LIFO).........     28,087        63,656
   Prepaid expenses...................................     72,359        74,905
   Other..............................................      9,543        15,659
                                                          -------        ------
    Total current assets..............................    809,479     1,027,138
                                                          -------     ---------

Deferred charges:
   Regulatory assets (Note 1).........................    328,094       337,965
   Unamortized debt expense...........................     29,621        29,775
   Other..............................................    218,194       184,934
                                                          -------       -------
    Total deferred charges............................    575,909       552,674
                                                          -------       -------
                                                       $8,170,549    $8,321,992
                                                       ==========    ==========

           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.

                                       1
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)


                             CAPITAL AND LIABILITIES

                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----

Common stock.......................................... $1,934,314    $1,916,088
Retained earnings.....................................    857,225       819,553
Accumulated other comprehensive income (Note 1) ......     (6,483)       (2,951)
                                                          -------        ------
    Total common equity...............................  2,785,056     2,732,690

PSCo and SPS obligated mandatorily redeemable preferred
  securities of subsidiary trusts holding solely
  subordinated debentures of PSCo and SPS (Note 6)....    294,000       294,000
Long-term debt of subsidiaries........................  2,313,511     2,374,121
                                                        ---------     ---------
                                                        5,392,567     5,400,811

Noncurrent liabilities:
   Employees' postretirement benefits other than
     pensions ........................................     59,614        57,596
   Employees' postemployment benefits.................     32,847        32,823
                                                          -------        ------
    Total noncurrent liabilities......................     92,461        90,419
                                                          -------        ------

Current liabilities:
   Notes payable and commercial paper.................    590,434       633,527
   Long-term debt due within one year.................    171,154       136,218
   Accounts payable...................................    337,596       471,757
   Dividends payable..................................     69,628        70,045
   Recovered electric energy costs....................     13,694        11,873
   Customers' deposits................................     31,344        30,810
   Accrued taxes......................................    124,586        88,617
   Accrued interest...................................     42,722        61,701
   Other..............................................    128,940       152,535
                                                          -------       -------
    Total current liabilities.........................  1,510,098     1,657,083
                                                        ---------     ---------

Deferred credits:
   Customers' advances for construction...............     58,980        56,259
   Unamortized investment tax credits.................     94,222        95,426
   Accumulated deferred income taxes..................    970,239       967,408
   Other..............................................     51,982        54,586
                                                          -------        ------
    Total deferred credits............................  1,175,423     1,173,679
                                                        ---------     ---------

Commitments and contingencies (Notes 4 and 5).........  ---------     ---------
                                                       $8,170,549    $8,321,992
                                                       ==========    ==========


           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.


                                       2
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                   CONSOLIDATED CONDENSED STATEMENTS OF INCOME
                                   (Unaudited)
                             (Thousands of Dollars)

                                                             Three Months Ended
                                                                  March 31,
                                                               2000      1999
                                                               ----      ----

Operating revenues:
   Electric...........................................       $633,122  $594,531
   Gas................................................        284,035   305,135
   Other..............................................         21,513    15,029
                                                              -------    ------
                                                              938,670   914,695

Operating expenses:
   Fuel used in generation............................        142,895   133,849
   Purchased power....................................        162,629   127,244
   Cost of gas sold...................................        186,753   219,079
   Other operating and maintenance expenses-regulated.        133,906   129,426
   Other operating and maintenance expenses-nonregulated       23,250    20,683
   Depreciation and amortization......................         72,190    69,502
   Taxes (other than income taxes) ...................         34,224    37,620
                                                              -------    ------
                                                              755,847   737,403
Operating income......................................        182,823   177,292

Other income and deductions:
   Equity in earnings of Yorkshire Power and other
     unconsolidated subsidiaries (Note 3) ............         23,141    15,811
   Miscellaneous income and deductions - net..........           (986)   (3,542)
                                                              -------    ------
                                                               22,155    12,269

Interest charges and preferred dividends of subsidiaries:
   Interest on long-term debt.........................         43,535    41,410
   Other interest.....................................         10,923     6,889
   Allowance for borrowed funds used during construction       (3,045)   (2,916)
   Dividends on PSCo and SPS obligated mandatorily
     redeemable preferred securities of subsidiary
     trusts holding solely subordinated debentures of
    PSCo and SPS .....................................          5,763     5,763
                                                                -----   -------
                                                               57,176    51,146

Income before income taxes............................        147,802   138,415
Income taxes..........................................         42,474    37,115
                                                              -------    ------
Net income............................................       $105,328  $101,300
                                                             ========  ========

Weighted average common shares outstanding:
   Basic..............................................        116,108   114,681
   Diluted............................................        116,108   114,743

Basic and diluted earnings per share of common stock
 outstanding                                                   $ 0.91    $ 0.88
                                                               ======    ======

           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.


                                       3
<PAGE>


                           NEW CENTURY ENERGIES, INC.
                                AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Thousands of Dollars)


                                                             Three Months Ended
                                                                  March 31,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................       $105,328  $101,300
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................         75,710    73,027
     Amortization of investment tax credits...........         (1,204)   (1,275)
     Deferred income taxes............................          9,205    (3,428)
     Equity in earnings of Yorkshire Power and other
       unconsolidated subsidiaries, net ..............        (23,141)  (15,811)
     Allowance for equity funds used during construction            -      (173)
     Change in accounts receivable....................         24,395    (4,622)
     Change in inventories............................         30,030    17,154
     Change in other current assets...................        125,979    70,338
     Change in accounts payable.......................       (131,891)  (29,525)
     Change in other current liabilities..............            765    46,037
     Change in deferred amounts.......................        (30,287)  (17,440)
     Change in noncurrent liabilities.................          2,042    (3,500)
     Other............................................            662         -
                                                              -------   -------
       Net cash provided by operating activities......        187,593   232,082

Investing activities:
   Construction expenditures..........................        (96,617) (116,753)
   Allowance for equity funds used during construction              -       173
   Proceeds from disposition of property, plant and
     equipment .......................................          2,011       715
   Purchase of other investments......................         (3,642)   (3,740)
   Sale of other investments..........................          4,051     5,181
                                                              -------   -------
       Net cash used in investing activities..........        (94,197) (114,424)

Financing activities:
   Proceeds from sale of common stock.................         10,990     8,789
   Proceeds from sale of long-term debt...............          1,566   149,118
   Redemption of long-term debt.......................        (27,989)  (65,212)
   Short-term borrowings - net........................        (43,093) (115,494)
   Dividends on common stock..........................        (70,150)  (66,709)
                                                              -------   -------
       Net cash used in financing activities..........       (128,676)  (89,508)
                                                             --------   -------
       Net (decrease) increase in cash and temporary
         cash investments ............................        (35,280)   28,150
       Cash and temporary cash investments at beginning
         of period ...................................         83,763    56,667
                                                               ------    ------
       Cash and temporary cash investments at end of
         period ......................................       $48,483   $ 84,817
                                                             =======   ========



           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements


                                       4
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
            CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY
                   Three Months Ended March 31, 2000 and 1999
                                   (Unaudited)
                (Thousands of Dollars, Except Share Information)

<TABLE>
<CAPTION>
                                                                                           Accumulated
                                                                 Paid                          Other
                                  Common Stock, $1 par value      in        Retained      Comprehensive
                                     Shares        Amount       Capital     Earnings           Income        Total
                                     ------        ------       -------     --------           ------        -----
<S>                              <C>            <C>          <C>            <C>              <C>          <C>
Balance at December 31, 1998     114,490,772    $  114,491   $1,751,895     $ 740,677        $  7,764     $2,614,827
Comprehensive income (Note 1):
  Net income................               -             -            -       101,300               -        101,300
  Foreign currency translation
   adjustment...............               -             -            -             -         (10,620)       (10,620)
                                                                                                             -------
      Comprehensive income                                                                                    90,680

Dividends declared on common
 stock                                     -             -            -       (66,662)               -       (66,662)
Issuance of common stock             434,210           434       17,867             -                -        18,301
Other:......................               -             -            -          (299)               -          (299)
                                     -------        ------      -------       -------          -------        ------

Balance at March 31, 1999        114,924,982    $  114,925   $1,769,762     $ 775,016        $(2,856)     $2,656,847
                                 ===========    ==========   ==========     =========        =======      ==========



Balance at December 31, 1999     115,837,199    $  115,837   $1,800,251     $ 819,553        $(2,951)     $2,732,690
Comprehensive income (Note 1):
  Net income................               -             -            -       105,328              -         105,328
  Foreign currency translation
   adjustment...............               -             -            -             -         (3,532)         (3,532)
                                                                                                              ------
      Comprehensive income                                                                                   101,796

Dividends declared on common
 stock .....................               -             -            -       (67,656)             -         (67,656)
Issuance of common stock             629,296           629       17,597             -              -          18,226
                                     -------       -------      -------       -------        -------          ------

Balance at March 31, 2000        116,466,495    $  116,466   $1,817,848     $ 857,225        $(6,483)     $2,785,056
                                 ===========    ==========   ==========     =========        =======      ==========

</TABLE>

Authorized shares of common stock were 260 million at March 31, 2000 and 1999.

           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.


                                       5
<PAGE>


                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)

                                     ASSETS

                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----

Property, plant and equipment, at cost:
   Electric ..........................................  $4,706,769   $4,629,092
   Gas................................................   1,310,031    1,289,995
   Steam and other....................................      68,378       68,109
   Common to all departments..........................     470,712      458,940
   Construction in progress...........................     267,398      300,224
                                                          --------     --------
                                                         6,823,288    6,746,360
   Less: accumulated depreciation ....................   2,432,531    2,373,824
                                                         ---------    ---------
     Total property, plant and equipment..............   4,390,757    4,372,536
                                                         ---------    ---------

Investments, at cost:
   Note receivable from affiliate (Note 3)............     192,620      192,620
   Other..............................................      12,405       12,679
                                                           -------     --------
    Total investments.................................     205,025      205,299
                                                           -------     --------

Current assets:
   Cash and temporary cash investments................      19,566       51,731
   Accounts receivable, less reserve for uncollectible
     accounts ($2,567 at March 31, 2000; $2,533 at
     December 31, 1999) ..............................      185,801     199,304
   Accrued unbilled revenues .........................       99,681     220,330
   Recoverable purchased gas and electric energy costs       25,013      42,697
   Materials and supplies, at average cost............       51,855      53,984
   Fuel inventory, at average cost....................       30,809      27,326
   Gas in underground storage, at cost (LIFO).........       27,868      62,487
   Current portion of deferred income taxes...........        5,030       3,532
   Prepaid expenses and other.........................       13,762      42,760
                                                            -------    --------
    Total current assets..............................      459,385     704,151
                                                            -------    --------

Deferred charges:
   Regulatory assets (Note 1).........................      227,100     236,251
   Unamortized debt expense ..........................       18,386      18,892
   Other..............................................       65,457      51,813
                                                           --------    --------
    Total deferred charges............................      310,943     306,956
                                                           --------    --------
                                                         $5,366,110  $5,588,942
                                                         ==========  ==========



           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.

                                       6
<PAGE>


                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)

                             CAPITAL AND LIABILITIES


                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----


Common stock..........................................   $1,414,835  $1,414,835
Retained earnings.....................................      367,118     346,050
                                                           --------     -------
    Total common equity...............................    1,781,953   1,760,885

PSCo obligated mandatorily redeemable preferred
  securities of subsidiary trust holding solely
  subordinated debentures of PSCo (Note 6)                  194,000     194,000
Long-term debt........................................    1,687,259   1,721,959
                                                          ---------   ---------
                                                          3,663,212   3,676,844

Noncurrent liabilities:
   Employees' postretirement benefits other than pensions    52,648      51,080
   Employees' postemployment benefits.................       26,229      26,229
                                                            -------     -------
    Total noncurrent liabilities......................       78,877      77,309
                                                             ------     -------

Current liabilities:
   Notes payable and commercial paper.................      232,393     356,192
   Long-term debt due within one year.................      166,961     132,823
   Accounts payable...................................      190,922     336,891
   Dividends payable..................................       47,691      44,575
   Recovered electric energy costs....................       13,694      11,873
   Customers' deposits................................       24,910      24,370
   Accrued taxes......................................      115,351      67,030
   Accrued interest...................................       33,856      44,034
   Other..............................................       67,809      91,067
                                                           --------    --------
    Total current liabilities.........................      893,587   1,108,855
                                                           --------   ---------

Deferred credits:
   Customers' advances for construction...............       57,622      54,826
   Unamortized investment tax credits ................       88,162      89,286
   Accumulated deferred income taxes..................      557,781     555,829
   Other..............................................       26,869      25,993
                                                           --------     -------
    Total deferred credits............................      730,434     725,934
                                                           --------     -------

Commitments and contingencies (Notes 4 and 5).........
                                                         $5,366,110  $5,588,942
                                                         ==========  ==========



           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.

                                       7
<PAGE>


                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                   CONSOLIDATED CONDENSED STATEMENTS OF INCOME
                                   (Unaudited)
                             (Thousands of Dollars)


                                                             Three Months Ended
                                                                  March 31,
                                                                2000     1999
                                                                ----     ----

Operating revenues:
   Electric...........................................       $406,095  $381,322
   Gas................................................        270,721   254,171
   Other..............................................          3,734     3,377
                                                              -------   -------
                                                              680,550   638,870

Operating expenses:
   Fuel used in generation............................         56,202    51,865
   Purchased power....................................        133,156   114,226
   Gas purchased for resale...........................        176,349   172,842
   Other operating and maintenance expenses...........         97,666    94,511
   Depreciation and amortization......................         50,364    48,540
   Taxes (other than income taxes) ...................         21,346    23,487
   Income taxes  .....................................         35,797    29,214
                                                              -------   -------
                                                              570,880   534,685
Operating income......................................        109,670   104,185

Other income and deductions-net.......................           (438)   (1,566)

Interest charges:
   Interest on long-term debt.........................         32,522    29,883
   Other interest.....................................          6,146     5,220
   Allowance for borrowed funds used during construction       (1,995)   (2,223)
   Dividends on PSCo obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of PSCo ..........          3,800     3,800
                                                                -----     -----

                                                               40,473   36,680

Net income............................................        $68,759  $65,939
                                                              =======  =======




           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.

                                       8
<PAGE>



                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Thousands of Dollars)


                                                             Three Months Ended
                                                                  March 31,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................        $68,759   $65,939
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................         52,384    50,507
     Amortization of investment tax credits...........         (1,124)   (1,194)
     Deferred income taxes............................          3,586       251
     Change in accounts receivable....................         13,503    13,580
     Change in inventories............................         33,265    17,296
     Change in other current assets...................        167,331    84,098
     Change in accounts payable.......................       (145,969)  (45,137)
     Change in other current liabilities..............         17,246    37,111
     Change in deferred amounts.......................         (8,595)   (9,683)
     Change in noncurrent liabilities.................          1,590    (3,860)
                                                              -------   -------
       Net cash provided by operating activities......        201,976   208,908

Investing activities:
   Construction expenditures..........................        (68,493)  (86,857)
   Proceeds from disposition of property, plant and
     equipment .......................................          2,203    10,532
   Purchase of other investments......................         (1,761)     (321)
   Sale of other investments..........................          3,033     4,861
                                                              -------   -------
       Net cash used in investing activities..........        (65,018)  (71,785)

Financing activities:
   Proceeds from the sale of long-term debt...........              -    47,909
   Redemption of long-term debt.......................           (749)  (65,063)
   Short-term borrowings - net........................       (123,799)  (63,395)
   Dividends on common stock..........................        (44,575)  (46,461)
                                                              -------   -------
       Net cash used in financing activities..........       (169,123) (127,010)
                                                             --------  --------

       Net (decrease) increase in cash and temporary
         cash investments ............................        (32,165)   10,113
       Cash and temporary cash investments at beginning
        of period ....................................         51,731    19,926
                                                              -------    ------

       Cash and temporary cash investments at end
         of period ...................................       $ 19,566  $ 30,039
                                                             ========  ========


           The accompanying notes to consolidated condensed financial
               statements are an integral part of these financial
                                   statements.


                                       9
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                            CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)

                                     ASSETS

                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----

Property, plant and equipment, at cost:
   Electric...........................................  $2,831,781  $2,802,077
   Construction in progress...........................      87,737      95,477
                                                            ------     -------
                                                         2,919,518   2,897,554
   Less: accumulated depreciation.....................   1,142,606   1,123,739
                                                         ---------   ---------
    Total property, plant and equipment...............   1,776,912   1,773,815
                                                         ---------   ---------

Investments, at cost:
   Notes receivable from affiliate....................     119,036     119,036
   Other..............................................       5,979       5,946
                                                           -------     -------
    Total investments.................................     125,015     124,982
                                                           -------     -------

Current assets:
   Cash and temporary cash investments................       7,427       1,532
   Accounts receivable, less reserve for uncollectible
    accounts ($294 at March 31, 2000; $682 at December
    31, 1999).........................................      62,024      83,928
   Accrued unbilled revenues..........................      56,748      44,631
   Recoverable electric energy cost...................       8,855       1,948
   Materials and supplies, at average cost............      21,518      18,035
   Fuel inventory, at average cost....................       2,293       2,292
   Prepaid expenses and other.........................       4,185       4,324
                                                           -------     -------
    Total current assets..............................     163,050     156,690
                                                           -------     -------

Deferred charges:
   Regulatory assets (Note 1).........................     100,748     101,419
   Prepaid pension asset..............................      45,425      40,087
   Unamortized debt expense...........................       9,641       9,605
   Other..............................................      15,844      12,778
                                                           -------     -------
    Total deferred charges............................     171,658     163,889
                                                           -------     -------
                                                        $2,236,635  $2,219,376
                                                        ==========  ==========



          The accompanying notes to condensed financial statements are
                 an integral part of these financial statements.

                                       10
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                            CONDENSED BALANCE SHEETS
                                   (Unaudited)
                             (Thousands of Dollars)

                             CAPITAL AND LIABILITIES

                                                        March 31,   December 31,
                                                          2000         1999
                                                          ----         ----

Common stock..........................................  $  353,099  $  353,099
Retained earnings.....................................     406,866     408,284
                                                           -------     -------
    Total common equity...............................     759,965     761,383

SPS obligated mandatorily redeemable preferred securities
 of subsidiary trust holding solely subordinated
 debentures of SPS (Note 6) ..........................     100,000     100,000
Long-term debt........................................     578,908     605,875
                                                           -------     -------
                                                         1,438,873   1,467,258

Noncurrent liabilities:
   Employees' postretirement benefits other than
     pensions ........................................       6,309       6,086
   Employees' postemployment benefits.................       4,963       4,940
                                                            ------     -------
    Total noncurrent liabilities......................      11,272      11,026
                                                            ------     -------

Current liabilities:
   Notes payable and commercial paper.................     225,234     177,746
   Accounts payable...................................      81,608      76,560
   Dividends payable..................................      19,680      20,963
   Customers' deposits................................       5,822       5,833
   Accrued taxes......................................      18,857      23,486
   Accrued interest...................................       8,498      17,223
   Other..............................................      39,168      26,857
                                                           -------     -------
    Total current liabilities.........................     398,867     348,668
                                                           -------     -------

Deferred credits:
   Unamortized investment tax credits.................       4,905       4,969
   Accumulated deferred income taxes..................     377,280     376,245
   Other..............................................       5,438      11,210
                                                           -------     -------
    Total deferred credits............................     387,623     392,424
                                                           -------     -------

Commitments and contingencies (Notes 4 and 5).........  ----------  ----------
                                                        $2,236,635  $2,219,376
                                                        ==========  ==========



          The accompanying notes to condensed financial statements are
                 an integral part of these financial statements.


                                       11
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                                   (Unaudited)
                             (Thousands of Dollars)


                                                             Three Months Ended
                                                                  March 31,
                                                               2000      1999
                                                               ----      ----

Operating revenues....................................        $216,232 $202,552

Operating expenses:
   Fuel used in generation............................          86,693   82,053
   Purchased power....................................          21,161    5,105
   Other operating and maintenance expenses...........          35,861   33,804
   Depreciation and amortization......................          19,354   18,472
   Taxes (other than income taxes)....................          12,082   13,384
   Income taxes.......................................          10,930   14,365
                                                               -------  -------
                                                               186,081  167,183
Operating income......................................          30,151   35,369

Other income and deductions - net.....................           3,410    2,080

Interest charges:
   Interest on long-term debt.........................          10,657   11,195
   Other interest.....................................           3,731    1,589
   Allowance for borrowed funds used during construction        (1,046)    (689)
   Dividends on SPS obligated mandatorily redeemable
    preferred securities of subsidiary trust holding
    solely subordinated debentures of SPS                        1,963    1,963
                                                                 -----    -----
                                                                15,305   14,058
                                                                ------   ------

Net income............................................         $18,256  $23,391
                                                               =======  =======


          The accompanying notes to condensed financial statements are
                 an integral part of these financial statements.


                                       12
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                       CONDENSED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Thousands of Dollars)


                                                             Three Months Ended
                                                                  March 31,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................        $18,256  $ 23,391
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................         20,352    19,611
     Amortization of investment tax credits...........            (63)      (63)
     Deferred income taxes............................          3,803    (3,460)
     Allowance for funds used during construction.....              -      (173)
     Change in accounts receivable....................         21,904     9,014
     Change in inventories............................         (3,484)     (278)
     Change in other current assets...................        (18,955)  (14,072)
     Change in accounts payable.......................          5,048     9,079
     Change in other current liabilities..............         (2,590)   11,195
     Change in deferred amounts.......................        (15,135)   (4,853)
     Change in noncurrent liabilities.................            246       376
                                                              -------   -------
       Net cash provided by operating activities......         29,382    49,767

Investing activities:
   Construction expenditures..........................        (22,356)  (27,170)
   Allowance for equity funds used during construction              -       173
   Cost of disposition of property, plant and equipment          (629)   (1,029)
   Purchase and sale of other investments.............            (33)      (54)
                                                                  ---      ----
       Net cash used in investing activities..........        (23,018)  (28,080)

Financing activities:
   Proceeds from sale of long-term debt...............              -    99,196
   Redemption of long-term notes and bonds............        (27,000)        -
   Short-term borrowings - net........................         47,488   (85,162)
   Dividends on common stock..........................        (20,957)  (20,007)
                                                              --------  -------
       Net cash used in financing activities..........           (469)   (5,973)
                                                              --------  -------
       Net increase in cash and temporary cash
         investments .................................          5,895    15,714
       Cash and temporary cash investments at beginning
         of period ...................................          1,532     1,350
                                                                -----     -----
       Cash and temporary cash investments at end of period   $ 7,427  $ 17,064
                                                              =======  ========



            The accompanying notes to condensed financial statements
               are an integral part of these financial statements



                                       13
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES

              NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS
                                   (Unaudited)


1.  Summary of Significant Accounting Policies (NCE, PSCo and SPS)

Business, Utility Operations and Regulation

      NCE is a  registered  holding  company  under the  PUHCA and its  domestic
utility  subsidiaries  (PSCo,  SPS and Cheyenne) are engaged  principally in the
generation, purchase, transmission,  distribution and sale of electricity and in
the  purchase,  transportation,  distribution  and sale of natural gas. Both the
Company and its  subsidiaries  are subject to the  regulatory  provisions of the
PUHCA. The utility  subsidiaries are subject to regulation by the FERC and state
utility  commissions  in  Colorado,  Texas,  New  Mexico,  Wyoming,  Kansas  and
Oklahoma.  Over 90% of the  Company's  revenues are derived  from its  regulated
utility operations.

      Regulatory Assets and Liabilities

      The Company's regulated subsidiaries prepare their financial statements in
accordance  with the provisions of SFAS 71, as amended.  SFAS 71 recognizes that
accounting for rate regulated  enterprises  should reflect the  relationship  of
costs and revenues introduced by rate regulation.  A regulated utility may defer
recognition  of a cost (a  regulatory  asset)  or  recognize  an  obligation  (a
regulatory  liability) if it is probable that,  through the rate making process,
there will be a corresponding increase or decrease in revenues. Accounting under
SFAS 71 is  appropriate  as long as 1) rates are  established  by or  subject to
approval  by  independent,  third  party  regulators,  2) rates are  designed to
recover  an  enterprise's  cost-of-service  and 3) in  view  of the  demand  for
service,  it is  reasonable  to assume  that  rates are set at levels  that will
recover costs and can be collected from customers. Management has concluded that
as of March 31, 2000, the requirements to apply SFAS 71 continue to be met since
its utility subsidiaries continue to be subject to cost-based rate regulation.

      The Emerging Issues Task Force of the Financial Accounting Standards Board
reached  a  consensus  in  Issue  No.  97-4,  "Deregulation  of the  Pricing  of
Electricity"  ("EITF 97-4")  indicating  that when  deregulatory  legislation is
passed or when a rate order  (whichever  is  necessary  to effect  change in the
jurisdiction)  that contains  sufficient  detail for an enterprise to reasonably
determine  how the  transition  plan will  affect the  separable  portion of its
business  whose pricing is being  deregulated is issued,  the enterprise  should
stop  applying  SFAS  71 to  that  separable  portion  of  its  business.  While
legislation  has been  enacted  in  Texas  and New  Mexico,  there  are  several
unresolved  issues  that will  significantly  impact  how and when  deregulation
related to the generation portion of the business will be implemented by SPS. It
is expected that SPS will  discontinue the application of SFAS 71 related to the
generation  portion of the business  when the  provisions of EITF 97-4 have been
met,  which may occur in 2000 and could be as early as the second  quarter  (see
Note 4. Regulatory Matters for further discussion).

      In the event  that a portion  of a  subsidiary's  operations  is no longer
subject to the  provisions  of SFAS 71, as a result of a change in regulation or
the  effects  of  competition,  the  affected  subsidary  could be  required  to
write-off  its  regulatory  assets,  determine  any  impairment  to other assets
resulting  from  deregulation  and  write-down  any  impaired  assets  to  their
estimated  fair  value,  which  could have a material  adverse  effect on NCE's,
PSCo's and/or SPS financial position, results of operations or cash flows.



                                       14
<PAGE>


       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

      The   following   regulatory   assets  are   reflected  in  the  Company's
consolidated balance sheets (in thousands):

March 31, 2000                          NCE         PSCo            SPS
                                      -------      -------       ------

Income taxes........................  $118,935     $ 55,879      $ 63,665
Nuclear decommissioning costs.......    61,405       61,405             -
Employees' postretirement benefits
  other than pensions...............    52,326       49,598         2,728
Employees' postemployment benefits..    23,343       23,018             -
Demand-side management costs........    34,250       22,284        11,966
Unamortized debt reacquisition costs    31,620       13,760        17,329
Other...............................     6,215        1,156         5,060
                                       -------      -------       -------
  Total.............................  $328,094     $227,100      $100,748
                                      ========     ========      ========

December 31, 1999                        NCE        PSCo            SPS
                                      -------      -------        ------

Income taxes........................  $123,241     $ 59,011       $64,829
Nuclear decommissioning costs.......    63,835       63,835             -
Employees' postretirement benefits
  other than pensions...............    53,321       50,570         2,751
Employees' postemployment benefits..    23,374       23,018             -
Demand-side management costs........    35,614       24,211        11,403
Unamortized debt reacquisition costs    31,492       14,284        16,671
Other...............................     7,088        1,322         5,765
                                       -------      -------       -------
  Total.............................  $337,965     $236,251      $101,419
                                      ========     ========      ========

      The regulatory  assets of the Company's  regulated  subsidiaries  that are
currently  being  recovered  as of March  31,  2000 and  December  31,  1999 are
reflected in rates charged to customers.  The recovery of regulatory assets over
the  next  three  years  is  estimated  to  exceed  $130  million.  Refer to the
discussion  below or the Notes to  Consolidated  Financial  Statements  included
herein and in the NCE,  PSCo and SPS 1999 Annual  Report on Form 10-K for a more
detailed discussion regarding recovery periods.

      The  Company  and  its   subsidiaries   adopted  accrual   accounting  for
postemployment benefits under SFAS 112 in 1994. The costs of these benefits were
historically  recorded  on a  pay-as-you  go basis  and,  accordingly,  PSCo and
Cheyenne  recorded  regulatory  assets in anticipation of obtaining  future rate
recovery of these costs. PSCo and Cheyenne subsequently  requested rate recovery
of these costs on a  jurisdictional  basis before  applicable  federal and state
regulatory  agencies.  PSCo recovered its FERC  jurisdictional  portion of these
costs  during  1996  to  1998  and  Cheyenne  received  Wyoming  Public  Service
Commission  approval  to recover  its  portion of these  costs.  PSCo  requested
approval to recover its Colorado retail gas jurisdictional portion ($8.9 million
balance at December 31, 1995) in a 1996 retail rate case and its retail electric
jurisdictional  portion  ($14.1  million  balance at December  31,  1996) in the
electric  department  earnings test filing for 1997. In the 1996 rate case,  the
CPUC allowed recovery of  postemployment  benefit costs on an accrual basis, but
denied  PSCo's  request to amortize the  regulatory  asset.  PSCo  appealed this
decision to the Denver District Court, arguing the CPUC's decision was not based
on substantial  evidence,  disregarded prior CPUC precedent allowing recovery of
the  amortization  of similar  costs,  and failed to state a valid  rationale to
support a disallowance of these legitimate  costs of service.  In 1998, the CPUC
approved a settlement  agreement  in  connection  with the  electric  department
earnings test filing for 1997,  which  deferred the final  determination  of the
regulatory treatment of the electric jurisdictional costs pending the outcome of
PSCo's appeals on the gas rate case. On December 16, 1999,  the Denver  District
Court affirmed the decision by the CPUC in the gas rate case. The District Court
based its decision  primarily on the absence of a provision in SFAS 112 allowing
for a transition  obligation to be established and amortized.  PSCo believes the
District Court fatally misconstrued the ratemaking significance of this fact. On
January 31, 2000, PSCo filed a Notice of Appeal with the Colorado  Supreme Court
and expects a final  decision on this matter  during  2000.  PSCo  continues  to
believe that it will ultimately be allowed to recover this regulatory  asset. If
PSCo  is  unsuccessful  in  its  appeal,  all  unrecoverable   amounts  totaling
approximately $23 million will be written off.

                                       15
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


      Other Property

      Property,  plant and equipment  includes  approximately  $18.4 million and
$26.2 million, respectively, for costs associated with the engineering design of
the future  Pawnee 2  generating  station and certain  water  rights  located in
southeastern  Colorado,  also obtained for a future generating station.  PSCo is
earning a return on these investments based on its weighted average cost of debt
in accordance with a CPUC rate order.

Non-utility Subsidiaries and International Investments

      The  Company's  non-utility   subsidiaries  are  principally  involved  in
energy-related  businesses  including  the  following:  engineering,  design and
construction  management,   non-regulated  energy  services,   including  energy
marketing and trading,  the management of real estate and certain life insurance
policies,  the financing of certain  current  assets of PSCo and  investments in
cogeneration  facilities,  electric  wholesale  generators and a foreign utility
company.  The  Company's  international  investments  are subject to  applicable
regulation  in the  countries  in which such  investments  are made (see Note 3.
Investment in Yorkshire Power). Financial statements of foreign subsidiaries are
translated into U.S.  dollars at current rates,  except for revenues,  costs and
expenses,  which are  translated at average  current rates during each reporting
period.

      Effective  July 1, 1999,  the Company sold all of the  outstanding  common
stock of Texas-Ohio Gas, Inc., a gas marketing company, including all retail gas
marketing  contracts  serving  customers  in the  northeast  region  of the U.S.
Certain operations were retained and transferred to new subsidiaries of e prime.
This sale did not have a significant impact on the Company's financial position,
results of operations or cash flows.

Consolidation and Financial Statement Presentation

      The Company  follows the  practice of  consolidating  the  accounts of its
majority owned and controlled  subsidiaries.  The Company  recognizes  equity in
earnings  from its  unconsolidated  investments  accounted  for under the equity
method of accounting.  All significant  intercompany items and transactions have
been eliminated.

Risk Management

      The Company and its subsidiaries  adopted Emerging Issues Task Force Issue
No. 98-10, "Accounting for Energy Trading and Risk Management Activities" ("EITF
98-10"),  effective  January  1,  1999.  EITF  98-10  requires  gains or  losses
resulting from market value changes on energy  trading  contracts to be recorded
in earnings.  The initial adoption of EITF 98-10 had no impact on the net income
of NCE,  PSCo or SPS.  For the three month period ended March 31, 2000 and 1999,
NCE  recognized a net loss of $275,000 and  $1,239,000,  respectively,  and PSCo
recognized a net loss of $124,000 and $183,000,  respectively,  for market value
changes on energy  trading  contracts.  SPS does not currently  have any trading
activities.

      Revenues and purchased energy costs associated with trading activities are
presented  net on the income  statement  in electric and gas  revenues.  Certain
prior year amounts have been reclassified for comparative purposes.

Comprehensive Income

      Comprehensive income (net income plus all other changes in net assets from
non-owner  sources)  and its  components  were  reported  in NCE's  Consolidated
Condensed  Statements of Shareholders'  Equity for the three-month periods ended
March 31, 2000 and 1999. Other  comprehensive  income consists solely of foreign
currency translation adjustments related to the investment in Yorkshire Power.

      For the three months  ending March 31, 2000 and 1999,  PSCo and SPS had no
comprehensive income items, therefore, comprehensive income equals net income.


                                       16
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Basic and Diluted Earnings Per Share

      Basic earnings per share is based upon the weighted  average common shares
outstanding  during the periods  presented.  Diluted earnings per share reflects
the potential  dilution  that could occur if  securities or other  agreements to
issue  common  stock were  exercised or  converted  into common  stock.  Diluted
earnings  per  share is based  upon  the  weighted  average  common  and  common
equivalent shares outstanding  during periods presented.  Employee stock options
are the  Company's  only  common  stock  equivalents.  The  Company has no other
potentially dilutive securities.

      The potentially dilutive securities included in the computation of diluted
earnings per share were approximately 300 shares and 62,000 shares for the three
months ended March 31, 2000 and 1999,  respectively.  These shares had no impact
on the Company's reported earnings per share information.

      Approximately  2,230,000  common  shares are  issuable  under stock option
grants as of March 31, 2000, but were not included in the computation of diluted
earnings per share  because the options'  exercise  prices were greater than the
average market price of the common stock.

Statements of Cash Flows - Non-cash Transactions:

      Shares of common  stock  (264,042 in 2000 and 200,880 in 1999),  valued at
the market price on the date of issuance  (approximately  $7 million in 2000 and
$8 million in 1999), were issued to savings plans of the Company.  The estimated
issuance  values  were  recognized  in  other  operating   expenses  during  the
respective   preceding  years.  The  stock  issuances  were  non-cash  financing
activities  and are not reflected in the  consolidated  condensed  statements of
cash flows.

      The changes in current assets,  current  liabilities and deferred  amounts
for the period prior to the sale of Texas-Ohio  Gas, Inc. for 1999 are reflected
in operating  activities  on the NCE  Consolidated  Condensed  Statement of Cash
Flows.

General

      See Note 1. of the Notes to Consolidated  Financial Statements in the NCE,
PSCo and SPS 1999 Annual  Report on Form 10-K for a summary of the companies and
their subsidiaries significant accounting policies.

2. Proposed Merger with Northern States Power Company (NCE, PSCo and SPS)

      On March 24, 1999, NCE and Northern  States Power Company  ("NSP") entered
into the NCE/NSP Merger Agreement providing for a strategic business combination
of NCE and NSP.  Pursuant to the NCE/NSP  Merger  Agreement,  NCE will be merged
with and into NSP. NSP will be the surviving  corporation  in the merger and the
holding company for the combined assets and operations. NSP will be renamed Xcel
Energy  Inc.  ("Xcel  Energy").  Concurrently  with the  closing of the  NCE/NSP
Merger, NSP will contribute all of its utility assets, other than shares that it
owns in subsidiaries,  to a newly formed  wholly-owned  subsidiary.  At the same
time, the new subsidiary  will assume all of NSP's  liabilities  associated with
the assets that it receives in the contribution.

      Subject to the terms of the NCE/NSP Merger  Agreement,  at the time of the
NCE/NSP Merger,  each share of NCE common stock, par value $1.00 per share ("NCE
Common  Stock")  (other than certain  shares to be canceled),  together with any
associated  purchase  rights,  will be converted  into the right to receive 1.55
shares of Xcel Energy  common  stock,  par value $2.50 per share  ("Xcel  Energy
Common  Stock").  Cash  will be paid in lieu of any  fractional  shares  of Xcel
Energy Common Stock which holders of NCE Common Stock would  otherwise  receive.
Based on outstanding  common stock of NCE and NSP at March 31, 2000, the NCE/NSP
Merger would result in the common  shareholders  of NCE owning 54% of the common
equity of Xcel  Energy  and the  common  shareholders  of NSP  owning 46% of the
common  equity of Xcel Energy.  The NCE/NSP  Merger is expected to be a tax-free
stock-for-stock  exchange for shareholders of both companies and to be accounted
for as a pooling-of-interests.


                                       17
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


      It is anticipated  that Xcel Energy will initially  adopt the NCE dividend
payment  level,  adjusted  for the  exchange  ratio,  resulting  in a pro  forma
dividend  of $1.50 per share on an annual  basis,  following  completion  of the
NCE/NSP  Merger.  The actual  dividend level will be dependent upon the combined
company's  results  of  operations,  financial  position,  cash  flows and other
factors, and will be evaluated by the Board of Directors of Xcel Energy.

      NCE and NSP estimate regulated cost savings of approximately $1.1 billion,
net of merger  costs and costs to  achieve  the  savings,  in the first 10 years
after the transaction is completed.  Nonrecurring costs directly attributable to
the NCE/NSP  Merger are being  deferred.  Assuming the business  combination  is
accounted for as a  pooling-of-interests,  these costs will be expensed upon the
consummation of the NCE/NSP Merger. It is anticipated that the Company's utility
subsidiaries will recover a portion of these merger costs through future rates.

      The shareholders of the Company and NSP approved the Agreement and Plan of
Merger in June 1999. Additionally, consummation of the NCE/NSP Merger is subject
to certain closing conditions,  including,  among others, approval or completion
of  regulatory  review by certain state  utility  regulators,  the SEC under the
PUHCA, the FERC, the Nuclear Regulatory  Commission,  the Federal Communications
Commission and expiration or termination of the waiting period applicable to the
NCE/NSP Merger under the Hart-Scott-Rodino  Antitrust  Improvements Act of 1976,
as amended ("HSR").

      Applications  or  submissions  to  the  state  utility  regulators,  where
required,  and the FERC were  completed in July 1999.  In general,  such filings
propose the sharing of cost savings among customers and  shareholders  for up to
five years.  The required  authorizations  from the state utility  regulators in
Arizona,  Colorado,  Kansas,  Minnesota,  New Mexico,  North  Dakota,  Oklahoma,
Wisconsin and Wyoming have been obtained  with final written  orders  pending in
certain  of  these  states.  On April  18,  2000,  the  Company  entered  into a
stipulation with all major parties in Texas,  which concludes that the merger is
in the public  interest.  Final  approval in Texas is expected by the end of the
second  quarter of 2000.  In January  2000,  the FERC issued its order  granting
unconditional  approval of the NCE/NSP Merger without requiring further hearings
(see Note 4.  Regulatory  Matters for further  discussion of NCE/NSP Merger rate
proceedings).  In February 2000, filings required under the PUHCA were made with
the SEC and as required under HSR. The waiting period under HSR expired March 1,
2000,  effectively  approving  the  NCE/NSP  Merger.  NCE and NSP also have each
agreed to certain  undertakings  and limitations  regarding the conduct of their
respective  businesses  prior to the  closing of the  transaction.  The  NCE/NSP
Merger is expected to be completed in mid-2000.

      A merger integration team, consisting of executives from each company, was
formed and is overseeing merger-related activities and the future integration of
operations  of NCE and NSP.  The  executive  officers and  organization  of Xcel
Energy Inc. have been announced and merger integration plans have been prepared.
It is  Management's  intention  that the combined  company will begin  realizing
certain savings upon the consummation of the NCE/NSP Merger.

      The following unaudited  summarized pro forma financial  information gives
effect to the NCE/NSP Merger as if it had occurred at March 31, 2000 for balance
sheet information and at January 1, 1999 for income statement information.  This
financial  information  should  be  read  in  conjunction  with  the  historical
financial statements and related notes of NCE and NSP, which are included in the
Annual Reports on Form 10-K of the respective companies.

      These  summarized  pro forma  amounts do not include any of the  estimated
cost savings expected to result from the NCE/NSP Merger. Such cost savings,  net
of the costs  incurred  to  achieve  such  savings  and to  complete  the merger
transaction,  are subject to regulatory  review and approval.  However,  the pro
forma amounts for NCE and NSP include approximately $20 million and $28 million,
respectively, of deferred nonrecurring merger costs as of March 31, 2000, mainly
those directly  attributable  to the merger  transaction.  Assuming the business
combination  is  accounted  for as a  pooling-of-interests,  these costs will be
expensed  upon the  consummation  of the NCE/NSP  Merger.  The pro forma  income
statement  information  amounts do not reflect any of these costs. The


                                       18
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


pro forma balance sheet  information has been adjusted to reflect a write-off of
the deferred costs and a related reduction of retained earnings.

      The unaudited summarized pro forma financial information has been prepared
using  information  provided  by NSP.  This  information  does  not  necessarily
indicate what the combined  company's  financial  position or operating  results
would have been if the merger had been completed on the assumed completion dates
and does not  necessarily  indicate  future  operating  results of the  combined
company.

Unaudited  Summarized  Pro Forma Balance Sheet  information as of March 31, 2000
(in millions):

                             NSP         NCE     Adjustments  Pro Forma
                             ---         ---     -----------  ---------
Property, plant &
  equipment- net .......   $4,449      $6,286      $3,852    $ 14,587
Current assets..........    1,156         810           -       1,966
Other assets............    5,991       1,075      (3,900)      3,166
                           ------      ------      ------      ------
  Total assets..........   $11,596     $8,171      $  (48)     $19,719
                           =======     ======      ======      =======

Common equity...........   $2,537      $2,785      $  (48)     $5,274
Preferred securities....      305         294           -         599
Long-term debt..........    4,984       2,314           -       7,298
                           ------      ------      ------      ------
  Total capitalization..    7,826       5,393         (48)     13,171
Current liabilities.....    2,059       1,510           -       3,569
Other liabilities.......    1,711       1,268           -       2,979
                           ------      ------      ------      ------
  Total equity and
    liabilities ........  $11,596      $8,171      $  (48)   $ 19,719
                          =======      ======      ======    ========

      The  unaudited  pro forma  balance  sheet  information  at March 31,  2000
reflects  reporting  adjustments  to conform the  presentation  of  nonregulated
property (in property, plant and equipment).

Unaudited Summarized Pro Forma Income Statement information for the three months
ended March 31 2000 and 1999 (in millions, except per share data):

   2000                      NSP         NCE     Adjustments  Pro Forma
                             ---         ---     -----------  ---------

Revenues................   $  793      $  939      $  366      $2,098
Operating income........       84         183         102         369
Net income..............       48         105           -         153
Earnings available for
 common                        47         105           -         152
Basic & diluted earnings
     per share..........    $0.30       $0.91           -       $0.45

   1999
Revenues................   $  743      $  915      $   86      $1,744
Operating income........       88         177          41         306
Net income..............       52         101           -         153
Earnings available for
  common                       51         101           -         152
Basic & diluted earnings
     per share..........    $0.34       $0.88           -       $0.46

      The unaudited pro forma income statement  information for the three months
ended  March 31,  2000 and 1999  reflect  reporting  adjustments  to conform the
presentation  of nonregulated  revenues and earnings from equity  investments in
operating revenues.


                                       19
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


3. Investment in Yorkshire Power (NCE)

Investment

  Yorkshire  Power is a joint venture equally owned by NCI, a subsidiary of NCE,
and AEP, which acquired  indirectly all of the  outstanding  ordinary  shares of
Yorkshire  Electricity,  a United Kingdom ("U.K.") regional electricity company.
NCI accounts for its  investment  in  Yorkshire  Power using the equity  method.
NCI's  equity in earnings of Yorkshire  Power is 50%, the same as its  ownership
share.  Yorkshire  Electricity's main business is the distribution and supply of
electricity and the supply of natural gas.

      Summarized  income statement  information for the three months ended March
31, 2000 and 1999, respectively is presented below (in millions):

                                                      2000         1999
                                                      ----         ----

    Yorkshire Power:
      Operating revenues.......................    $  662.5      $  652.0
                                                   --------      --------

      Operating income.........................       117.1         113.5
                                                   --------      --------

      Net income...............................    $   48.3      $   34.6
                                                   ========      ========

    NCI's equity in earnings of Yorkshire Power    $   24.2      $   17.3
                                                    =======      ========

      Yorkshire Power changed its accounting for depreciation, effective January
1, 2000.  NCI's  equity in earnings  for the three  months  ended March 31, 2000
include approximately $6.5 million (after-tax) related to this change.

Distribution and Supply Price Proposals

      In December 1999, the Office of Gas and Electricity Markets ("Ofgem"), the
body  appointed  by the U.K.  government  to  regulate  the gas and  electricity
industries  in the  U.K.,  published  its final  price  proposals  for  regional
electricity  distribution  and  supply  businesses.   The  final  proposals  for
Yorkshire  Power's  distribution  business  provided  for  a  15%  reduction  in
Yorkshire  Power's  distribution  revenues and a further 8% transfer of costs to
Yorkshire Power's electricity supply business.  The final proposal for Yorkshire
Power's  supply  business  provided  for a supply  price cap for  domestic  U.K.
consumers,  which would apply for two years from April 2000 until March 2002 and
would not apply to small industrial and commercial  customers,  where the market
was  sufficiently  competitive.  These  supply  proposals  for  Yorkshire  Power
provided  for a real  price  reduction  of  approximately  3.6% on the  standard
domestic tariff and a nominal price freeze from April 2001 ending in March 2002.

      On December 20, 1999,  Yorkshire  Power  accepted  these final  proposals.
Yorkshire  Power believes that the supply prices  established in the competitive
market may require  Yorkshire to charge supply prices for customers it wishes to
retain who are subject to supply price controls which are lower than the maximum
prices  established by Ofgem. If Yorkshire Power charges such lower prices,  the
result will be a further  reduction in supply  revenues  beyond that mandated by
Ofgem.

      In response to Ofgem's final  proposals and the increasing  competition in
the supply business,  Yorkshire Power's management announced on January 18, 2000
the  adoption  of  an  aggressive  program  of  reducing   controllable   costs.
Significant features of this program include reductions in capital expenditures,
staff  reductions,  outsourcing  of  certain  functions  and  consolidations  of
facilities.  Yorkshire Power intends to aggressively  pursue this cost reduction
program and is evaluating additional cost reduction measures to further mitigate
the  impact of the  future  distribution  and supply  price  reductions.  Should
Yorkshire  Power be  unable  to  reduce  costs or grow  revenues  to the  extent
required  to offset  the effect of the price  proposals,  the  Company's  equity
earnings  from its  investment  in  Yorkshire  Power will be  reduced,  possibly
significantly,  in comparison  to its current  level of earnings.  Additionally,
earnings  continue to be impacted by the changes in the pricing and


                                       20
<PAGE>

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


purchase of bulk electric power and earnings during the first and fourth quarter
of 2000 are expected to exceed the second and third quarter earnings.

4. Regulatory Matters (NCE, PSCo and SPS)

Electric Utility Matters

PSCo Performance Based Regulatory Plan (PBRP)

      PSCo's  base  electric  rates are  based on  traditional  cost of  service
ratemaking principles.  The CPUC established a performance based regulatory plan
in connection with the CPUC's decision to approve the PSCo/SPS Merger. The major
components of this regulatory plan include the following:

     o  an annual electric  department  earnings test with the sharing of
        earnings in excess of an 11% return on equity for the calendar years
        1997-2001;
     o  a Quality  Service Plan ("QSP") which provides for refunds to customers
        if PSCo does not achieve certain  performance  measures  relating to
        electric reliability, customer complaints and telephone response to
        inquiries; and
     o  an ICA which provides for the sharing of energy costs and savings
        relative to an annual target cost/delivered Kwh.

      PSCo has  recorded  an  estimated  customer  refund  obligation  under the
earnings test for the calendar years 1997 to 1999 and the first quarter of 2000.
In April of each year following the measurement  period, PSCo files its proposed
rate  adjustment  under the PBRP.  The CPUC conducts  proceedings  to review and
approve  these  rate  adjustments  annually.  Since  July  1998,  PSCo  has been
refunding  amounts related to the sharing of earnings in excess of 11% return on
equity to  customers.  PSCo has recorded  customer  refund  obligations  for its
earnings test of approximately $15 million for 1997, $8 million for 1998, and an
estimate of $17 million for 1999. Final determinations of amounts to be refunded
for 1998 and 1999 have not been made.

      In 1999,  PSCo did not  achieve  all of the  minimum  service  performance
measures  under the QSP, due in part to  circumstances  associated  with extreme
weather   conditions.   PSCo   recorded  an  estimated   refund   obligation  of
approximately $3.6 million in 1999. PSCo has filed its report for the year ended
1999  with the CPUC  addressing  the  calculated  amount  of the  refund.  Final
approval by the CPUC is pending.

      Additionally, PSCo agreed to freeze base electric rates after the PSCo/SPS
Merger  rate  reductions  for the  period  through  December  31,  2001 with the
flexibility to make certain other rate changes,  including  those  necessary for
the recovery of DSM, QF capacity costs and decommissioning  costs. The freeze in
base  electric  rates does not prohibit  PSCo from filing a general rate case or
deny any party the opportunity to initiate a complaint or show cause proceeding.
Various  provisions  of their  regulatory  plan were  extended  and  modified as
discussed in "NCE/NSP Merger Rate Filings".

SPS Electric Cost Adjustment Mechanisms

      Substantially  all fuel and  purchased  power costs are  recoverable  from
utility customers,  as determined on a jurisdictional basis, using approved cost
adjustment mechanisms.

Texas

      The PUCT's  regulations  require  periodic  examination  of SPS's fuel and
purchased  power costs,  the  efficiency  of the use of such fuel and  purchased
power, fuel acquisition and management  policies and purchase power commitments.
SPS is required to file an  application  for the  Commission to  retrospectively
review,  at least every three years,  the operations of a utility's  electricity
generation  and  fuel  management  activities.  In  June  1998,  SPS  filed  its
reconciliation  for the  generation  and  fuel  management  activities  totaling
approximately  $690 million,  for the period from


                                       21
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


January 1995 through December 1997. For this same period,  SPS had approximately
$21.4 million in  under-recovered  fuel costs  associated  with the Texas retail
jurisdiction.  SPS has  entered  into a  settlement  agreement  with the General
Counsel of the PUCT,  which,  if  approved,  would  provide for the  recovery of
substantially  all fuel  costs.  The final  outcome of this fuel  reconciliation
proceeding is pending.  Various  parties in the  proceedings  are contesting the
settlement  agreement,  which  includes the recovery of the Thunder  Basin costs
discussed  below.  Hearings were held in October 1999. It is anticipated  that a
decision will be issued during the second quarter of 2000.

      SPS was named as a defendant in a case entitled Thunder Basin Coal Co. vs.
Southwestern Public Service Co. In November 1994, the jury returned a verdict in
favor of Thunder Basin and awarded damages of approximately  $18.8 million.  SPS
appealed  the  judgment to the Tenth  Circuit  Court of Appeals  and, in January
1997,  that Court found in favor of Thunder  Basin and upheld the  judgment.  In
February  1997, SPS recorded the liability for the judgment  including  interest
and court costs.  The amount of  approximately  $22.3  million was paid in April
1997.

      During 1996 and 1997, SPS obtained  conditional  approval from the FERC to
collect portions of the Thunder Basin judgment from wholesale  customers and the
NMPRC issued an order granting recovery of the New Mexico retail  jurisdictional
portion  of the  judgment.  In May 1997,  SPS  filed a request  with the PUCT to
surcharge under-collected fuel and purchased power expenses, which included $9.1
million of the Thunder Basin judgment. The PUCT issued a decision,  which denied
recovery of the judgment  through a surcharge on the grounds that the costs were
not classified as fuel costs. In 1997, SPS expensed  approximately $12.1 million
of the Texas retail  jurisdictional  portion of the Thunder  Basin  judgment and
recognized  an equal  amount  as  deferred  revenue  in  anticipation  of future
recovery through the pending fuel reconciliation proceeding.

      SPS believes that recovery of the Thunder Basin costs for the Texas retail
jurisdiction  will be approved in the pending  fuel  reconciliation  proceeding.
Under the PUCT  regulations,  a utility may recover  eligible  fuel  expenses or
fuel-related  expenses,  which result in benefits to  customers  that exceed the
costs that  customers  would  otherwise  have to pay.  The  Thunder  Basin costs
resulted in total net savings to customers of approximately  $8.5 million,  with
approximately   $4.6   million  net  savings   attributable   to  Texas   retail
jurisdictional  customers.  In  the  previously  discussed  proposed  settlement
agreement with the General Counsel's office at the PUCT, the General Counsel has
agreed with SPS's proposed recovery of the Thunder Basin costs.

      Effective in April 1999, the PUCT  authorized SPS to reduce its fixed fuel
factor for SPS's Texas retail  jurisdiction,  by approximately $44 million on an
annual  basis.  This rate  reduction  and fuel cost refund are  primarily due to
lower coal  transportation  costs  between  SPS's coal supplier and the railroad
company that began in late 1998. The PUCT also authorized SPS to refund its over
collected  fuel costs for the period  January 1998 through  January  1999.  This
one-time $16 million fuel refund, including interest, was applied to the monthly
billings during April 1999.

New Mexico

      The  NMPRC  regulations  provide  for a  fuel  and  purchased  power  cost
adjustment  clause and a fixed  annual fuel  factor for SPS's New Mexico  retail
jurisdiction.  SPS files  monthly and annual  reports of its fuel and  purchased
power costs with the NMPRC, which include the current over/under fuel collection
calculation,  plus  interest.  In  addition,  SPS  revises its fixed fuel factor
annually  to recover  projected  fuel and  purchase  power  costs as well as any
over/under  fuel cost balance for the current year.  SPS is required to petition
for a change in the fixed fuel factor if the over/under recovery balance reaches
$5 million. New Mexico's over/under  calculation,  plus interest,  is similar to
the Texas fixed fuel factor calculation.

SPS Rate Cases

Wholesale - FERC

      On November 9, 1999, SPS filed with the FERC a  transmission  rate case to
increase electric  transmission rates annually by approximately $1 million, with
an  effective  date of January 1, 2000.  In April 2000,  SPS, the


                                       22
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


FERC and other  parties  reached a tenative  unanimous  settlement  agreement in
principal.  It is anticipated that the final settlement agreement will be issued
during the second quarter of 2000.

Cheyenne Rate Case

      In August of 1999,  Cheyenne  filed a combined gas and electric  rate case
with the WPSC  requesting  an increase in the annual  combined  electric and gas
base rates.  This followed the  expiration of the two-year  moratorium on filing
rate  cases  agreed to in  connection  with the WPSC  approval  of the  PSCo/SPS
Merger. Hearings were held in January 2000 and the WPSC approved annual electric
and gas base rate  increases  of $2.1  million and $1.2  million,  respectively,
effective March 1, 2000, based on a 12% return on equity.

Restructuring Legislation (NCE and SPS)

      SPS is an integrated  electric  utility and serves  approximately  385,000
retail  customers in portions of the states of Texas,  New Mexico,  Oklahoma and
Kansas.  Over 97% of SPS' retail customers,  sales and revenues are in Texas and
New Mexico.  SPS serves wholesale  customers  within its service  territory that
comprise  approximately  30-35%  of  total  electric  revenues  and  Kwh  sales.
Restructuring  legislation  has  been  enacted  in  Texas  and  New  Mexico,  as
summarized  below.  SPS has and  continues to make filings with the PUCT and the
NMPRC, as required under each state's  legislation,  to address  critical issues
related to SPS'  transition  plans for retail  competition.  SPS  believes  that
retail  competition  will be implemented in these states on or before January 1,
2002.  Texas will institute a 5% pilot program  beginning  June 2001.  State and
Federal  regulators  will be  addressing  a  number  of  issues  related  to the
implementation of restructuring  during 2000 and 2001. SPS is diligently working
to satisfy the conflicting legislative and regulatory requirements in developing
its  transition  plans.  It is  currently  anticipated  that the  implementation
approach  being  developed  in Texas,  as  discussed  below,  will  satisfy  the
legislative  and  regulatory  requirements  in New Mexico and will be consistent
with other state and Federal regulations.

Overview of New Mexico Legislation

      On April 8, 1999,  New Mexico enacted the Electric  Utility  Restructuring
Act  of  1999,  which  provides  for  customer  choice  for  residential,  small
commercial and educational customers beginning January 1, 2001 and all remaining
retail customers beginning January 1, 2002. Customers of a municipal utility and
customers of a distribution  cooperative utility will be afforded choice only if
the  respective  utility elects to  participate.  The  legislation  provides for
recovery of no less than 50% of stranded  costs for all  utilities as quantified
by the NMPRC.  Transition  costs must be  approved  by the NMPRC  prior to being
recovered  through a non-by-passable  wires charge,  which must be included in a
transition  plan filing due to be filed on June 1, 2000.  SPS must  separate its
utility  operations  into at  least  two  segments:  1)  energy  generation  and
competitive  services and 2)  transmission  and  distribution  utility  services
either by the  creation  of  separate  affiliates  that may be owned by a common
holding  company  or by the  sale of  assets  to one or more  third  parties.  A
regulated  company,  in  general,  is  prohibited  from  providing   unregulated
services.

      In January 2000, SPS  petitioned  and received  approval from the NMPRC to
file its transition plan by June 1, 2000.  Additionally,  SPS requested that the
NMPRC  postpone the beginning of customer  choice for certain  retail  customers
until June 1, 2001 and postpone the completion of SPS corporate  separation from
January 1, 2001 to January 1, 2002.  The NMPRC  considered  these  requests  and
comments by other New Mexico  utilities.  On April 20, 2000, the NMPRC approved:
1) a one-year delay of customer  choice for  residential,  small  commercial and
educational  customers to January 1, 2002 (the timing for implementing  customer
choice for other retail  customers has not been  finalized) and 2) SPS' proposal
to delay  corporate  separation  for one year.  Final written  orders related to
these matters are pending.

Overview of Texas Legislation

      On June 18,  1999,  an electric  utility  restructuring  act  ("SB-7") was
passed in Texas, which provides for the implementation of retail competition for
most areas of the state  beginning  January 1, 2002. The  legislation


                                       23

<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


requires,  among  other  things,  a rate  freeze  for all  customers,  effective
September 1, 1999 until January 1, 2002,  together with an annual  earnings test
through 2001; a 6% rate  reduction for those  residential  and small  commercial
customers who choose not to switch suppliers at the start of retail competition;
the unbundling of business  activities,  costs and rates relating to generation,
transmission and  distribution  and retail  services;  reductions in NOx and SO2
emissions  and the recovery of stranded  costs.  The PUCT can delay the date for
retail  competition  if a power region is unable to offer fair  competition  and
reliable service during the 2001 pilot projects.

      Overall, SB-7's objective is to introduce full retail competition into the
Texas  electric  utility  industry.  SB-7  requires each utility to unbundle its
business  activities into three separate legal entities:  1) a power  generation
company, 2) a regulated  transmission and distribution  company, and 3) a retail
electric  provider.  SB-7  limits  the  market  share  that a single  generation
provider can control to 20% of the  generating  capacity  within a power region.
The establishment of a qualified power region with multiple generation suppliers
is  required  under SB-7 in order to  implement  full retail  competition.  SB-7
specifically  addresses competition in the Texas Panhandle,  where SPS operates,
recognizing that certain  transmission  constraints exist within the region that
may require full retail customer choice to develop on a more structured schedule
than the rest of the state.  SPS must file a transition to competition plan with
the PUCT by December 1, 2000.  SPS, with no estimated net stranded  costs,  must
return any excess  earnings  indicated in the annual earnings tests to customers
during the period January 1, 1999 through December 31, 2001 or alternatively may
direct any excess  earnings to improvements  in  transmission  and  distribution
facilities,  to capital expenditures to improve air quality or to accelerate the
amortization of regulatory assets (subject to PUCT approval).

Implementation Approach

      SPS filed its business  separation  plan in Texas during the first quarter
of 2000 for the unbundling of business  activities relating to power generation,
transmission and distribution and retail electric provider services. In summary,
SPS has  committed to separate  into  distinct  businesses  and to operate in an
arm's length manner so that the  transactions  between  affiliated  entities and
regulated  entities  do not confer any unduly  competitive  advantages  on NCE's
businesses as compared to non-affiliates.  In April 2000, the PUCT approved SPS'
business separation plan.  Overall,  the plan provides for the separation of all
competitive energy services by September 1, 2000, including the establishment of
an NCE customer care company,  which will provide  customer  services for all of
NCE's operating utilities and a formal code of conduct and compliance manual for
managing affiliate  transactions.  Prior to any legal separation and unbundling,
SPS will be required to address the provisions  limiting or otherwise  affecting
such  activities  contained in its first mortgage bond  indenture.  SPS plans to
arrange  interim  financing,  as  approved  by the NMPRC,  to enable open market
purchases  and/or tender and/or  monetary  defeasance of all  outstanding  first
mortgage bonds. Subject to all required approvals and indebtedness restrictions,
it is  anticipated  that all  generation-related  and certain  other  assets and
liabilities will be transferred at net book value to newly-formed  affiliates in
accordance with SPS' business  separation plan (up to approximately  50% of SPS'
assets).  It is  expected  that  SPS and  its  affiliates  will  be  capitalized
consistent with their respective business operations.

      On April 18, 2000,  SPS entered into a  Stipulation  with the staff of the
PUCT and other  significant  parties,  which was filed with the PUCT,  and among
other  things,  specifically  addresses  SPS  implementation  plans  to meet the
requirements of the Texas deregulation legislation.  In summary, the Stipulation
provides for the  implementation  of full retail  customer  choice by SPS in its
Texas service region, including the future divestiture of certain SPS generation
assets.  Subject to certain  market  conditions,  SPS has agreed to divest 1,750
megawatts,  at a minimum, by January 1, 2002 and has specifically identified the
plants that it would sell in connection with additional divestitures required to
establish a qualified power region.  For SPS to comply with this qualified power
region  requirement and to implement full customer choice in Texas, a minimum of
2,843  megawatts and a maximum of 3,184  megawatts of existing power  generation
assets or capacity must be sold to third party non-affiliates. SPS has committed
to complete these divestitures by January 1, 2006. These divestitures  represent
approximately 64-71% of the generation capacity owned by SPS and its affiliates.
SPS expects  some or all of these  divestitures  to be  completed  by the end of
2001.  Assuming these divestitures are completed,  approximately  1,281 to 1,608
megawatts  of  generation  capacity in Texas and New Mexico would be retained by
the Company


                                       24
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


through an affiliated power generation  company.  Management believes that these
divestitures  are in response to the legal  requirements of SB-7 and, that these
divestitures  can  occur  consistent  with the  pooling-of-interests  accounting
requirements.  The  Stipulation  provides  that if the SEC  determines  that the
divestitures would be a pooling  violation,  the divestitures would be scheduled
to meet the SEC's pooling-of-interests requirements.

      The  Stipulation  also  resolves  certain  issues  related to the proposed
merger  between  NCE and NSP and  concludes  that such  merger is in the  public
interest. A PUCT meeting is scheduled to address this matter on May 18, 2000 and
a rate order  approving the NCE/NSP Merger is expected during the second quarter
of 2000 (see Note 2. Proposed Merger with Northern States Power Company).

      SPS has  committed,  upon  closing  of the  NCE/NSP  Merger,  to  transfer
functional  control  of  its  electric   transmission   system  to  the  Midwest
Independent System Operator, Inc. ("MISO"), a regional transmission organization
that will  operate the  transmission  systems of multiple  owners in the central
United States.

      SPS  filed a rate  case  on  March  31,  2000  to set  the  rates  for the
transmission  and  distribution   services,   which  are  to  be  unbundled  and
implemented  on  January  1,  2002.  The  Company  requested   recovery  of  all
jurisdictional  costs  associated with  restructuring  in Texas.  Hearings and a
final rate order are not expected before 2001.

Financial Reporting Matters

      SPS prepares its financial statements in accordance with SFAS 71 (see Note
1. Summary of Significant  Accounting Policies).  The Emerging Issues Task Force
of the  Financial  Accounting  Standards  Board reached a consensus in Issue No.
97-4, "Deregulation of the Pricing of Electricity" ("EITF 97-4") indicating that
when  deregulatory  legislation  is passed or when a rate  order  (whichever  is
necessary to effect change in the jurisdiction) that contains  sufficient detail
for an enterprise to reasonably  determine how the  transition  plan will affect
the  separable  portion of its business  whose pricing is being  deregulated  is
issued, the enterprise should stop applying SFAS 71 to that separable portion of
its business. Restructuring legislation has been enacted in Texas and New Mexico
and a settlement has been achieved with all  intervenors in Texas.  Absent final
approvals  of the  Stipulation  and  such  transition  plans by the PUCT and the
NMPRC, uncertainties continue to exist which preclude a reasonable determination
of the impacts of the deregulation of SPS' generation business and discontinuing
the  application  of  SFAS  71 to  that  operation.  SPS  will  discontinue  the
application  of SFAS 71 related to the  generation  portion of its business when
the  provisions of EITF 97-4 have been met, which may be in 2000 and could be as
early as the second  quarter.  The  accounting  for the  discontinuation  of the
application  of SFAS 71 could  include the  write-off of all  generation-related
regulatory assets  (approximately $20 million) and an impairment of other assets
resulting from deregulation.

      Additionally,  there may be other  significant  financial  implications of
implementing SB-7 and electric  restructuring in New Mexico.  These implications
include,  but are not limited to, the refinancing of securities,  investments in
information  technology,  establishing an independent  operation of the electric
transmission   systems,   implementing   the  procedures  to  govern   affiliate
transactions,  the  pricing of  unbundled  energy  services  and the  regulatory
recovery of incurred costs related to these issues.  Based on current  estimates
these incurred costs could be as much as $150 million.

      The resolution of these matters may have a significant financial impact on
the financial position, results of operations and cash flows of SPS and NCE.

NCE/NSP Merger Rate Filings

      The Company and its utility subsidiaries filed applications or submissions
with its  state  utility  regulators,  where  required,  and the FERC to  obtain
approvals of the NCE/NSP Merger. In general,  the filings propose the sharing of
cost savings among customers and shareholders.  In January 2000, the FERC issued
its  order  granting  unconditional  approval  of  the  NCE/NSP  Merger  without
requiring  further  hearings.  All  regulatory  approvals


                                       26
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


have been received in Wyoming, Kansas and Oklahoma. Following is a brief summary
of the merger rate proceedings in Colorado, Texas and New Mexico.

Colorado

      On January 31, 2000, PSCo, the CPUC Staff, the OCC and  substantially  all
other parties to the proceeding  filed a stipulation and agreement  recommending
approval of the merger with the following major conditions:

     o  PSCo will reduce its retail electric rates by $11 million annually for
        the two-year period from July 1, 2000 through June 30, 2002;
     o  PSCo will file a  combined  electric  and gas rate case in early 2002
        with new rates anticipated to be effective January 1, 2003;
     o  merger costs will be capped at $30 million and amortized for ratemaking
        purposes over the period July 1, 2000 to December 31, 2003;
     o  the PBRP and the QSP currently in effect will continue through 2006 with
        modifications to cap the electric department earnings at 10.5% return on
        equity for 2002, no earnings sharing in 2003 since new base rates would
        have recently been established, and an increase in potential  refunds if
      quality standards are not met, including a QSP for natural gas operations.

The CPUC held  hearings on this matter and issued a final  order  approving  the
NCE/NSP Merger on April 24, 2000.

Texas
      On April 18, 2000, SPS entered into a Stipulation, as discussed previously
in "Restructuring Legislation",  resolving certain issues related to the NCE/NSP
Merger and concluding that such proposed merger is in the public  interest.  The
major  provisions of the regulatory  plan not previously  discussed  include the
following:

     o  guaranteed merger  savings   credits  of  $400,000  per  month  and  the
        amortization of merger costs over the period from the effective  date of
        the merger through December 31, 2005;
     o  retention of the current fuel recovery mechanism to pass along fuel cost
        savings to retail customers and;
     o  an agreement to comply with  various new service quality and reliability
        standards,  covering   service   installations   and   upgrades,   light
        replacements, customer   service  call  center  and   electric   service
        reliability.

A final order  approving  the NCE/NSP  Merger,  including  the  Stipulation,  is
expected during the second quarter of 2000.

New Mexico

      In January  2000,  the NMPRC held  hearings  on the  NCE/NSP  Merger.  The
application  was not contested by staff or intervenors in the case. The examiner
requested that SPS draft a recommended  decision.  In summary,  SPS proposed the
following regulatory plan for the period July 1, 2000 through December 31, 2004:

     o  guaranteed merger savings credits of $65,000 per month;
     o  an equal sharing of the net non-fuel operating and maintenance savings
        among retail customers and shareholders;
     o  a 50% recovery of merger related transaction and transition costs;
     o  retention of the current fuel recovery mechanism to pass along fuel cost
        savings to retail customers.
     o  SPS will not pass to customers any negative rate impacts of the  NCE/NSP
        Merger.

                                       26
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


      The Company estimates that SPS retail customers in New Mexico will receive
approximately $4.0 million of merger savings over the period ending December 31,
2004. On May 9, 2000, the NMPRC approved the NCE/NSP Merger.

Gas Utility Matters

PSCo Rate Cases

      In  November  1998,  PSCo  filed a  retail  gas  rate  case  with the CPUC
requesting  an annual  increase in rates of  approximately  $23.4  million.  The
request for a rate increase reflects revenues for additional plant investment, a
12.0% return on equity and the recovery of incremental year 2000 costs (see Note
5. Commitments and  Contingencies - Year 2000 Issue).  On June 8, 1999, the CPUC
approved an increase in base rates of  approximately  $15 million with an 11.25%
return on equity,  effective  July 1, 1999.  PSCo was also  allowed  recovery of
certain environmental costs and recovery of prudently incurred Y2K costs under a
separate mechanism beginning in 2000.

      On June 5, 1996, PSCo filed a retail rate case with the CPUC requesting an
annual  increase  in  its  jurisdictional  gas  department   revenues  equal  to
approximately $34 million.  In early 1997, the CPUC approved an overall increase
of approximately $18 million with an 11.25% return on equity, effective February
1, 1997 and as modified on May 15,  1997.  The CPUC  disallowed  the recovery of
certain  postemployment  benefit  costs under SFAS 112 and  imputed  anticipated
merger  related  savings  net of costs  (associated  with the  PSCo/SPS  Merger)
related  to the gas  business  (see Note 1.  Summary of  Significant  Accounting
Policies).  During 1997,  PSCo filed a petition with the Denver  District  Court
appealing the CPUC's  decision.  On December 16, 1999, the Denver District Court
affirmed the CPUC  disallowance  of SFAS 112 costs and the  imputation of merger
savings.  PSCo filed a petition  with the Colorado  Supreme Court on January 31,
2000 to appeal the Denver District Court's  decision.  In the event that PSCo is
not successful in its appeal(s),  including pursuing regulatory recovery,  these
amounts related to SFAS 112 costs will be written off.

Planned Closure of the Leyden Underground Gas Storage Facility

      On April 14,  2000,  PSCo filed an  application  with the CPUC  requesting
authority to shut down and abandon its Leyden  Natural Gas  Underground  Storage
Facility located northwest of the City of Arvada, Colorado during 2001, after 40
years of operation.  The application seeks approval of a formal  decommissioning
plan. The plan outlines  PSCo's  proposal to plug and abandon the wells that are
currently  being  used to inject  and  withdraw  gas from the mine and  requests
approval  of the costs to  decommission  and shut down the  facility,  which are
currently  estimated at  approximately  $8.6 million.  An application to recover
these costs and remaining  plant  investments  from the ratepayers will be filed
with the CPUC in a separate future proceeding.

PSCo Unbundling and Deregulation of the Retail Natural Gas Supply Business

      On April 26, 1999, the Colorado  legislature approved a bill, which allows
natural gas public  utilities  to  voluntarily  submit plans to the CPUC to open
their markets and enable  customers to choose their  natural gas supplier.  This
bill was signed by the  Governor  on June 6, 1999.  Currently,  PSCo  provides a
traditional  bundled gas service with rates  designed for the recovery of actual
gas  costs  through  the GCA  and  for  providing  transportation  and  delivery
services.  Delivery of natural gas will continue to be regulated,  with delivery
companies  required to offer  nondiscriminatory  pipeline access to competitors.
PSCo will continue to be subject to the reporting  requirements  of SFAS 71 as a
regulated  distribution  company.  PSCo has not filed a plan to open its natural
gas supply  business to  competition  and  continues  to evaluate  its  business
opportunities for doing so.

5. Commitments and Contingencies (NCE, PSCo and SPS)

Environmental Issues

      The Company  and its  subsidiaries  are  subject to various  environmental
laws,  including  regulations  governing air and water  quality,  the storage of
natural gas and the  storage and  disposal of  hazardous  or toxic  wastes.  The
Company and its  subsidiaries  assess,  on an ongoing basis,  measures to ensure
compliance with laws


                                       27
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


and  regulations  related  to air and water  quality,  hazardous  materials  and
hazardous waste compliance and remediation activities.  Changes to environmental
regulations,  interpretations  or  enforcement  policies  may  impact the future
construction and operation of the Company's  electric  generation,  transmission
and  distribution  systems  and gas  transportation,  storage  and  distribution
systems.

Environmental Site Cleanup

      PSCo has been or is currently  involved with the cleanup of  contamination
from certain hazardous substances at several sites. In many situations,  PSCo is
pursuing or intends to pursue insurance claims and believes it will recover some
portion of these costs through such claims. Additionally, where applicable, PSCo
is pursuing, or intends to pursue, recovery from other PRPs and through the rate
regulatory  process.  To the  extent  any costs are not  recovered  through  the
options  listed  above,  PSCo would be required to recognize an expense for such
unrecoverable  amounts. While potential liability and settlement costs are still
under investigation and negotiation,  PSCo believes that the resolution of these
matters will not have a material  adverse effect on PSCo's  financial  position,
results of operations or cash flows.

Other Environmental Matters

      PSCo has  obtained  all  necessary  approvals to proceed with its plans to
spend   approximately  $211  million  on  its  Denver  and  Boulder  Metro  area
coal-fueled  power  plants to further  reduce  such  emissions  below the levels
required  under the Clean Air Act Amendments of 1990. The cost of these controls
will be recovered through rates from Colorado customers.

Hayden Steam Electric Generating Station

      In 1996,  PSCo and the other  joint  owners of Hayden  Station  reached an
agreement,  enforceable  by  U.S.  District  Court  through  a  Consent  Decree,
resolving violations alleged in complaints filed by a conservation organization,
the Colorado  Department of Public Health and Environment  ("CDPHE)" and the EPA
against the joint  owners.  PSCo is the operator  and owns an average  undivided
interest  of  approximately  53% of  the  station's  two  generating  units.  In
connection  with the  settlement,  the joint  owners of the Hayden  station were
required to install  emission control  equipment of  approximately  $130 million
(PSCo's portion is approximately $70 million).  This equipment was installed and
became  operational  on Units 1 and 2 during  1998  and  1999 as  scheduled  and
required under the settlement.  If the Hayden Station remains in compliance with
the  settlement  until  early  2001,  the Hayden  owners may  petition  the U.S.
District Court to release jurisdiction over the Consent Decree.

Craig Steam Electric Generating Station

      In October 1996, a conservation organization filed a complaint in the U.S.
District  Court  pursuant to  provisions  of the Federal  Clean Air Act (the
"Act") against the joint owners of the Craig Steam Electric  Generating  Station
located in western Colorado.  Tri-State Generation and Transmission Association,
Inc. is the operator of the Craig  station and PSCo owns an  undivided  interest
(acquired  in  April  1992)  in  each  of  two  units  at the  station  totaling
approximately  9.7%. The plaintiff  alleged that the station  violated the Clean
Air Act requirement related to opacity. The complaint seeks, among other things,
civil monetary  penalties and injunctive  relief. The Act provides for penalties
of up to $25,000 per day per  violation,  but the level of penalties  imposed in
any particular  instance is  discretionary.  The parties,  the EPA and the CDPHE
entered into mediation in an attempt to resolve all air quality  matters related
to the  facility.  Resolution  of this matter may require  the  installation  of
additional  emission  control  equipment.  Management  does not believe that any
potential  liability,  the future impact of this litigation on plant operations,
or any  related  cost will have a material  adverse  impact on PSCo's  financial
position, results of operations or cash flows.

Tax Matters

      PSRI, a subsidiary  of PSCo,  owns and manages  permanent  life  insurance
policies  on certain  past and present  employees.  These  corporate  owned life
insurance  ("COLI")  policies  were entered into prior to July 1, 1986. In 1996,
Congress  passed  legislation  to phase out the tax  benefits  with certain COLI
policies, however,

                                       28
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


PSRI's policies were grandfathered  under this legislation.  In August 1998, the
IRS issued a Notice of Proposed  Adjustment  proposing  to disallow the 1993 and
1994  deductions  of  interest  expense  related  to  policy  loans  on the COLI
policies.  In March  2000,  the IRS  amended  its  original  adjustment  to also
disallow the interest deductions taken in tax years 1995 through 1997. The total
disallowance  of interest  expense  deductions for the five years as proposed by
the IRS is approximately  $175 million.  A request for Technical Advice from the
IRS National Office with respect to the proposed adjustment is pending.

      Management is vigorously  contesting this issue. PSRI has not recorded any
provision  for income tax or  interest  expense  related to this  matter and has
continued to take  deductions  for interest  expense  related to policy loans on
it's income tax returns for subsequent  years.  Management  believes that PSRI's
tax  deduction of interest  expense on life  insurance  policy loans was in full
compliance  with IRS regulations and believes that the resolution of this matter
will not have a material adverse impact on NCE's or PSCo's  financial  position,
results of operations or cash flows.

Employee Matters

      The Company and its subsidiaries are engaged in certain employment related
litigation and intend to contest, or are actively  contesting,  all such claims,
and believe that the ultimate outcome will not have a material adverse impact on
the  financial  position,  results of operations or cash flows of the Company or
its subsidiaries.

6.   Obligated Mandatorily  Redeemable Preferred Securities of Subsidiary Trusts
Holding Solely Subordinated Debentures (NCE, PSCo and SPS)

      In May 1998,  PSCo Capital Trust I, a wholly-owned  trust of PSCo,  issued
7,760,000  shares of its 7.60% Trust  Originated  Preferred  Securities for $194
million.  The sole asset of the trust is $200 million principal amount of PSCo's
7.60% Deferrable Interest Subordinated Debentures, due June 30, 2038. Holders of
the securities are entitled to receive quarterly  dividends at an annual rate of
7.60% of the liquidation  preference value of $25. The securities are redeemable
at the option of PSCo on and after May 11, 2003 at 100% of the principal  amount
outstanding plus accrued interest.  In addition to PSCo's  obligations under the
Subordinated Debentures,  PSCo has agreed, pursuant to a guarantee issued to the
trust and the  provisions  of the trust  agreement  establishing  the trust,  to
guarantee,  on a subordinated  basis,  payment of distributions on the preferred
securities  (but not if the  trust  does not have  sufficient  funds to pay such
distributions)  and to pay all of the expenses of the trust  (collectively,  the
"Back-up   Undertakings").   Considered   together,   the  Back-up  Undertakings
constitute a full and  unconditional  guarantee by PSCo of the trust obligations
under the  preferred  securities.  The proceeds from the sale of the 7.60% Trust
Originated Preferred Securities were used to redeem all $181.8 million of PSCo's
outstanding  preferred  stock  on  June  10,  1998,  and for  general  corporate
purposes.

      In October 1996,  Southwestern  Public  Service  Capital I, a wholly-owned
trust of SPS,  issued  $100  million of its 7.85%  Trust  Preferred  Securities,
Series A. The sole asset of the trust is $103 million  principal amount of SPS's
7.85% Deferrable  Interest  Subordinated  Debentures,  Series A due September 1,
2036.  The  securities  are redeemable at the option of SPS on and after October
21, 2001 at 100% of the principal amount plus accrued  interest.  In addition to
SPS's obligations under the Subordinated Debentures, SPS has agreed, pursuant to
a  guarantee  issued  to  the  trust,  the  provisions  of the  trust  agreement
establishing  the trust and a  related  expense  agreement  to  guarantee,  on a
subordinated  basis,  payment of distributions on the preferred  securities (but
not if the trust does not have sufficient funds to pay such  distributions)  and
to pay all of the  expenses  of the  trust.  Considered  together,  the  Back-up
Undertakings  constitute a full and unconditional  guarantee by SPS of the trust
obligations under the preferred securities. The proceeds from the sale were used
to reduce short-term debt.

7.  Business Segment Information (NCE, PSCo and SPS)

NCE:
      NCE has three  reportable  segments:  electric  utility,  gas  utility and
international. The electric utility segment consists primarily of the activities
of the three  regulated  operating  companies that provide  wholesale and


                                       29
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


retail electric service in the states of Colorado,  Texas, New Mexico,  Wyoming,
Kansas  and  Oklahoma.  The  gas  utility  segment  consists  primarily  of  the
activities of three regulated  operating  companies providing retail gas service
in the states of Colorado and Wyoming.  The  international  segment  consists of
equity  investments in foreign  operations held by NCI.  Revenues from operating
segments  below the  quantitative  thresholds  are  included  in the "All Other"
category.  Those primarily include a company involved in non-regulated power and
gas marketing activities throughout the United States; a company that invests in
and develops cogeneration and energy related projects; a company that is engaged
in engineering,  design construction management and other miscellaneous services
and a  company  engaged  in energy  consulting,  energy  efficiency  management,
conservation programs and mass market services.

      The accounting policies of the segments are the same as those described in
Note 1. Summary of Significant Accounting Policies. NCE evaluates performance by
each legal entity based on profit or loss  generated from the product or service
provided. NCE segment information is as follows (in thousands):

<TABLE>
<CAPTION>
                                                                       Eliminations/
Three months ended:    Electric       Gas                       All    Unallocated    Consolidated
March 31, 2000         Utility      Utility    International   Other      Amounts         Total
                       -------      -------    -------------   -----      -------         -----
<S>                    <C>         <C>            <C>         <C>        <C>           <C>
Revenues:
 External customers    $633,122    $275,157       $     -     $30,391    $      -      $938,670
 Intersegment                56       2,770             -      12,466           -        15,292
Segment profit           55,970      24,323        22,084       6,970      (4,019)      105,328

March 31, 1999
Revenues:
 External customers    $594,531    $259,384       $     -     $60,780    $      -      $914,695
 Intersegment               155       1,959             -      16,642           -        18,756
Segment profit           66,820      18,211        18,140       4,721      (6,592)      101,300
</TABLE>

PSCo:
      PSCo has two reportable  segments:  electric utility and gas utility.  The
electric  utility  segment  consists  primarily  of  the  activities  of  PSCo's
regulated  operations  that provide  wholesale  and retail  electric  service in
Colorado. The gas utility segment consists primarily of the activities of PSCo's
regulated gas operations in Colorado. Revenues from operating segments below the
quantitative  thresholds are included in the all other category.  Those segments
primarily include a real estate company which owns certain real estate interests
of PSCo, a company which owns and manages  permanent life insurance  policies on
certain past and present  employees,  a finance company that finances certain of
PSCo's current assets and a steam production segment serving the Denver area.

      The accounting policies of the segments are the same as those described in
Note 1. Summary of Significant  Accounting Policies.  PSCo evaluates performance
by each  legal  entity  based on profit or loss  generated  from the  product or
service provided. PSCo segment information is as follows (in thousands):

                                                       Eliminations/
Three months ended:    Electric       Gas       All    Unallocated  Consolidated
March 31, 2000         Utility      Utility    Other      Amounts      Total
                       -------      -------    -----      -------      -----
Revenues from
 external customers    $406,095    $270,721    $3,734    $     -      $680,550
Segment profit           40,470      24,075     4,214          -        68,759

March 31, 1999
Revenues from
 external customers    $381,322    $254,171    $3,377    $     -      $638,870
Segment profit           44,466      17,989     6,865     (3,381)       65,939

SPS:
      SPS  operates  in  the  regulated   electric  utility  industry  providing
wholesale and retail electric service in Texas, New Mexico, Kansas and Oklahoma.
Revenues from external customers for this reportable segment were $216.2 million
and  $202.6  million  for the  three  months  ended  March  31,  2000 and  1999,
respectively.


                                       30
<PAGE>
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


8.  Management's Representations (NCE, PSCo and SPS)

      In the opinion of the registrants, the accompanying unaudited consolidated
condensed  financial  statements  for NCE, PSCo and SPS include all  adjustments
necessary for the fair presentation of the financial position of the Company and
its  subsidiaries  at March 31,  2000 and  December  31, 1999 and the results of
operations  and cash flows for the three  months  ended March 31, 2000 and 1999.
The unaudited  consolidated  condensed  financial  information and notes thereto
should be read in conjunction  with the  consolidated  financial  statements and
notes included in the combined 1999 Annual Report on Form 10-K for NCE, PSCo and
SPS.

      Because of seasonal and other  factors,  the results of operations for the
three  months  ended  March 31,  2000  should not be taken as an  indication  of
earnings for all or part of the balance of the year.


                                       31
<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO NEW CENTURY ENERGIES, INC.:

We have reviewed the accompanying  consolidated  condensed  balance sheet of New
Century Energies, Inc. (a Delaware corporation) and subsidiaries as of March 31,
2000, and the related consolidated condensed statements of income, shareholders'
equity and cash flows for the three-month periods ended March 31, 2000 and 1999.
These financial statements are the responsibility of the Company's management.

We conducted our review in accordance with standards established by the American
Institute  of  Certified  Public  Accountants.  A review  of  interim  financial
information consists principally of applying analytical  procedures to financial
data and making  inquiries of persons  responsible  for financial and accounting
matters. It is substantially less in scope than an audit conducted in accordance
with  generally  accepted  auditing  standards,  the  objective  of which is the
expression of an opinion  regarding the financial  statements  taken as a whole.
Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material  modifications that should
be  made  to the  financial  statements  referred  to  above  for  them to be in
conformity with accounting principles generally accepted in the United States.

We have  previously  audited,  in accordance with auditing  standards  generally
accepted in the United  States,  the  consolidated  balance sheet of New Century
Energies,  Inc.  and  subsidiaries  as of  December  31,  1999,  and the related
consolidated  statements of income,  shareholders' equity and cash flows for the
year then ended  (not  presented  separately  herein),  and in our report  dated
February  15,  2000,  we expressed  an  unqualified  opinion on these  financial
statements.  In our  opinion,  the  information  set  forth in the  accompanying
consolidated  condensed balance sheet as of December 31, 1999, is fairly stated,
in all material  respects,  in relation to the  consolidated  balance sheet from
which it has been derived.


                                                        ARTHUR ANDERSEN LLP

Denver, Colorado,
May 12, 2000.


                                       32
<PAGE>



                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO PUBLIC SERVICE COMPANY OF COLORADO:

We have reviewed the accompanying consolidated condensed balance sheet of Public
Service  Company of Colorado (a Colorado  corporation)  and  subsidiaries  as of
March 31, 2000, and the related consolidated  condensed statements of income and
cash flows for the  three-month  periods  ended March 31,  2000 and 1999.  These
financial statements are the responsibility of the Company's management.

We conducted our review in accordance with standards established by the American
Institute  of  Certified  Public  Accountants.  A review  of  interim  financial
information consists principally of applying analytical  procedures to financial
data and making  inquiries of persons  responsible  for financial and accounting
matters. It is substantially less in scope than an audit conducted in accordance
with  generally  accepted  auditing  standards,  the  objective  of which is the
expression of an opinion  regarding the financial  statements  taken as a whole.
Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material  modifications that should
be  made  to the  financial  statements  referred  to  above  for  them to be in
conformity with accounting principles generally accepted in the United States.

We have  previously  audited,  in accordance with auditing  standards  generally
accepted in the United States,  the consolidated  balance sheet and statement of
capitalization  of Public  Service  Company of Colorado and  subsidiaries  as of
December  31,  1999,  and  the  related   consolidated   statements  of  income,
shareholder's  equity  and cash  flows for the year then  ended  (not  presented
separately  herein),  and in our report dated February 15, 2000, we expressed an
unqualified  opinion  on  these  financial  statements.   In  our  opinion,  the
information set forth in the accompanying  consolidated  condensed balance sheet
as of December 31, 1999, is fairly stated, in all material respects, in relation
to the consolidated balance sheet from which it has been derived.


                                                        ARTHUR ANDERSEN LLP

Denver, Colorado,
May 12, 2000.



                                       33
<PAGE>



                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO SOUTHWESTERN PUBLIC SERVICE COMPANY:

We have reviewed the accompanying condensed balance sheet of Southwestern Public
Service Company (a New Mexico corporation) as of March 31, 2000, and the related
condensed  statements of income and cash flows for the three-month periods ended
March 31, 2000 and 1999. These financial  statements are the  responsibility  of
the Company's management.

We conducted our review in accordance with standards established by the American
Institute  of  Certified  Public  Accountants.  A review  of  interim  financial
information consists principally of applying analytical  procedures to financial
data and making  inquiries of persons  responsible  for financial and accounting
matters. It is substantially less in scope than an audit conducted in accordance
with  generally  accepted  auditing  standards,  the  objective  of which is the
expression of an opinion  regarding the financial  statements  taken as a whole.
Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material  modifications that should
be  made  to the  financial  statements  referred  to  above  for  them to be in
conformity with accounting principles generally accepted in the United States.

We have  previously  audited,  in accordance with auditing  standards  generally
accepted in the United States, the balance sheet and statement of capitalization
of Southwestern  Public Service Company as of December 31, 1999, and the related
statements  of  income,  shareholder's  equity  and cash flows for the year then
ended (not presented  separately  herein),  and in our report dated February 15,
2000, we expressed an unqualified opinion on these financial statements.  In our
opinion,  the information set forth in the accompanying  condensed balance sheet
as of December 31, 1999, is fairly stated, in all material respects, in relation
to the balance sheet from which it has been derived.


                                                        ARTHUR ANDERSEN LLP

Denver, Colorado,
May 12, 2000.




                                       34
<PAGE>



Item 2. Management's  Discussion and Analysis of Financial Condition and Results
of Operations (NCE, PSCo and SPS)

NCE's Management's Discussion and Analysis of Financial Condition and Results of
Operations

Three Months  Ended March 31, 2000  Compared to the Three Months Ended March 31,
1999

NCE/NSP Merger

      On March 24, 1999,  the Company and NSP entered into an Agreement and Plan
of Merger  providing  for a strategic  business  combination  of the  companies.
Consummation of this "merger of equals" is subject to certain closing conditions
and the obtaining of  applicable  regulatory  approvals.  Assuming all remaining
regulatory  approvals  can be achieved in a timely  manner,  it is expected  the
NCE/NSP  Merger will be completed by  mid-2000.  The name of the merged  company
will be Xcel Energy Inc. The combined  company is  anticipated  to be one of the
top 10 largest gas and electric  energy  companies in the U.S.  Xcel Energy Inc.
will serve approximately 3 million electricity customers and 1.5 million natural
gas customers in portions of twelve  states.  See Note 2.  Proposed  Merger with
Northern States Power Company in Item 1. FINANCIAL STATEMENTS.

Earnings

      Earnings per share (basic and diluted) were $0.91 for the first quarter of
2000 as compared to $0.88 per share (basic and diluted) for the first quarter of
1999.  Continued  customer growth in Colorado and the favorable  impact of a gas
rate increase effective in July 1999 contributed to the higher earnings in 2000.
Equity in earnings of Yorkshire Power  increased  slightly;  however,  Yorkshire
Power's  future  contribution  to  earnings  is  expected  to decline due to the
distribution  and supply price  reductions  that will be effective April 2000 as
well as the impacts of possible increased competition in its supply business. An
aggressive cost reduction program is expected to mitigate,  to a certain degree,
these reductions.

Electric Operations

      The following table details the change in electric  operating revenues and
energy  costs for the first  quarter of 2000 as  compared  to the same period in
1999 (in thousands).
                                                      Increase (Decrease)
                                                      -------------------
Electric operating revenues:
Retail................................................     $ 1,822
Wholesale.............................................      32,877
Other (including unbilled revenues)...................       3,892
                                                           -------
  Total revenues......................................      38,591
Fuel used in generation...............................       9,046
Purchased power.......................................      35,385
                                                           -------
  Net decrease in electric margin.....................     $(5,840)
                                                           =======

     The following  table  compares  electric  PSCo/SPS  sales by major customer
classes for the first quarter of 2000 and 1999.
                                              Millions of Kwh Sales
                                                 2000       1999    % Change *
                                                 ----       ----    ----------
Residential................................     2,753     2,711        1.5%
Commercial and industrial..................     6,991     6,660        5.0
Public authority...........................       202       182       11.2
                                                -----     -----
  Total retail.............................     9,946     9,553        4.1
Wholesale..................................     3,817     2,756       38.5
                                                -----     -----
Total......................................     13,763    12,309      11.8
                                                ======    ======
Power marketing and trading................      6,630     1,481      **
                                                 =====     =====
* Percentages are calculated using unrounded amounts.
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

                                       35
<PAGE>

      Electric margin  decreased $5.8 million in the first quarter of 2000, when
compared to the first quarter of 1999. The favorable  impact of customer  growth
of  approximately  2.1% was  offset by the  negative  effect  of  warmer  winter
weather, particularly in the southern service territory, and the negative impact
of cost sharing under PSCo's ICA (approximately $5.2 million). While total sales
increased  approximately  12%, the majority of this increase is due to lower Kwh
sales reported in 1999. During 1999,  changes were made in the billing cycles of
various retail and wholesale  customers in  anticipation  of  implementing a new
customer  information system which resulted in lower billed Kwh sales and higher
unbilled  revenues.  Unbilled revenues were lower for the first quarter of 2000,
when compared to the same period in 1999.  Wholesale  revenues  increased due in
part to higher non-firm sales in 2000.  Power  marketing and trading  activities
have  increased,   although  revenues  and  purchased  energy  costs  for  these
activities are presented net for financial reporting  purposes.  Activities from
wholesale  marketing and trading positively  contributed to electric margin, but
the amount was not significant.

      The Company's regulated subsidiaries have cost adjustment mechanisms which
recognize the majority of the effects of changes in fuel used in generation  and
purchased  power costs and allow  recovery of such costs on a timely  basis (see
Note 4. Regulatory  Matters in Item 1. FINANCIAL  STATEMENTS).  PSCo has an ICA,
which allows for a 50%/50% sharing of certain fuel and energy cost increases and
decreases among customers and shareholders.

      Fuel used in generation  expense  increased  $9.0 million during the first
quarter of 2000,  as  compared  to the same  quarter in 1999,  primarily  due to
increased  generation levels at PSCo and SPS and higher gas costs for generation
at PSCo's Fort St. Vrain generating station and various SPS plants.

      Purchased  power expense  increased $35.4 million during the first quarter
of 2000,  as compared to the same  quarter in 1999,  primarily  due to increased
purchases  resulting in part from an extended outage at one of PSCo's generating
stations and an increase at SPS in capacity costs of $6.5 million related to new
purchase power contracts.

Gas Operations

      The  following  table details the change in gas revenues and gas purchased
for resale for the first quarter of 2000, as compared to the same period in 1999
(in thousands).

                                                     Increase (Decrease)
                                                     -------------------

Revenues from gas sales (including unbilled revenues).     $(22,311)
Gas purchased for resale..............................      (32,326)
                                                            -------
 Net increase in gas sales margin.....................       10,015
Transportation revenues...............................        1,211
                                                            -------
 Increase in net gas margin...........................     $ 11,226
                                                           ========

      The following table compares gas Dth deliveries by major customer  classes
for the first quarter of 2000 and 1999.
                                      Millions of Dth Deliveries
                                                2000  1999    % Change *
                                                ----  ----    ----------
Residential................................     38.1  39.0      (2.2)%
Commercial.................................     17.0  18.0      (5.7)
                                               ----- -----
  Total sales..............................     55.1  57.0      (3.3)
Transportation.............................     33.9  31.3       8.2
                                               ----- -----
  Total....................................     89.0  88.3       0.8
                                                ====  ====       ===
Non-regulated gas marketing and trading....     79.1  39.5      **
                                               ===== =====
*   Percentages are calculated using unrounded amounts.
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

                                       36
<PAGE>

      Gas sales margin increased during the first quarter of 2000, when compared
to the first  quarter  of 1999,  primarily  due to higher  retail  sales at PSCo
resulting  from  customer  growth of  approximately  3.6% and  higher  gas rates
effective July 1, 1999, resulting from PSCo's 1998 rate case (approximately $5.8
million).  Although  non-regulated  gas marketing  and trading  sales  increased
significantly,  the margin on such sales decreased slightly when compared to the
prior year.

      Gas transportation  revenues  increased  approximately $1.2 million during
the first quarter of 2000, when compared to the first quarter of 1999, primarily
due to higher deliveries at PSCo.

      PSCo and  Cheyenne  have in place GCA  mechanisms  for  natural gas sales,
which  recognize  the  majority  of the  effects  of  changes in the cost of gas
purchased  for resale and adjusts  revenues to reflect such changes in cost on a
timely  basis.  As a result,  the  changes  in  revenues  associated  with these
mechanisms during the first quarter of 2000, as compared to the first quarter of
1999, had little impact on net income.  However,  the  fluctuations in gas sales
impact  the  amount  of gas the  Company's  gas  utilities  must  purchase  and,
therefore,  along with the  increases and decreases in the per-unit cost of gas,
affect total gas purchased for resale.

Other Operating Revenues and Equity in Earnings of Unconsolidated Subsidiaries

      Other operating  revenues  increased  approximately $6.5 million primarily
due  to an  increase  in  revenue  from  engineering,  design  and  construction
management and energy management and consulting services.

      Equity  earnings from  Yorkshire  Power  increased  $6.8 million over 1999
primarily due to a change in its accounting for depreciation,  effective January
1, 2000.  NCI's  equity in earnings  for the three  months  ended March 31, 2000
includes approximately $6.5 million (after-tax) related to this change (see Note
3. Investment in Yorkshire Power in Item 1. FINANCIAL STATEMENTS).

Non-Fuel Operating Expenses and Other Income and Deductions

      Other operating and maintenance  expense-regulated  increased $4.5 million
primarily  due to higher gas  transmission  costs  related to the lease of a gas
pipeline to support customer growth in Colorado and higher electric transmission
costs  purchased for resale  incurred in connection with providing new wholesale
electric sales.  These  increased costs were offset,  in part, by lower electric
and gas  distribution  maintenance  expense.  Other  operating  and  maintenance
expense-non-regulated increased $2.6 million primarily due to increased costs in
providing engineering,  design and construction management and energy management
and consulting services.

      Taxes  other  than  income  taxes  decreased  approximately  $3.4  million
primarily due to lower business and utility property tax accruals in Colorado.

      Income taxes increased $5.4 million during the first quarter of 2000, when
compared to the same quarter in 1999,  primarily due to higher pre-tax income in
the current  period and the  favorable  impact of deducting  certain  prior year
severance costs in 1999.

      Interest charges  increased $6.0 million during the first quarter of 2000,
when  compared to the same  quarter in 1999,  primarily  due to costs to finance
capital  expenditures,  including  higher interest costs on short-term  debt. In
July 1999, PSCo issued $200 million of 6 7/8% Series A Senior Notes, due in July
2009.

Other Market Risks

      NCE and its subsidiaries are exposed to market risks, including changes in
commodity prices,  interest rates and currency exchange rates as fully disclosed
in the NCE,  PSCo and SPS 1999  Annual  Report  on Form  10-K.  NCE's  regulated
subsidiaries have limited exposure to commodity price and interest rate risk due
to cost-based rate regulation.  Exposure to currency exchange risk is related to
NCE's  investment in Yorkshire  Power (see Note 3. Investment in Yorkshire Power
in Item 1.  FINANCIAL  STATEMENTS).  There have been no material


                                       37
<PAGE>

changes  in  the  market  risk  exposures  that  affect  the   quantitative  and
qualitative  disclosures  presented  as of December  31, 1999 in the 1999 Annual
Report on Form 10-K.

Commitments and Contingencies

      Issues  related to regulatory and  environmental  matters are discussed in
Notes 4 and 5 in Item 1.  FINANCIAL  STATEMENTS.  These  matters  and the future
resolution  thereof  may  impact the  Company's  future  results of  operations,
financial position or cash flows.

Common Stock Dividend

      The Board of  Directors  approved  a $0.58 per share  dividend  payable to
shareholders of the Company for the first quarter of 2000. The Company's  common
stock dividend level is dependent upon the Company's financial position, results
of operations,  cash flows and other factors, including the proposed merger with
NSP. The Board of Directors of the Company will  continue to evaluate the common
stock dividend on a quarterly basis.

Liquidity and Capital Resources

Cash Flows -Three Months Ended March 31
                                                2000        1999      Decrease
                                                ----        ----      --------
Net cash provided by operating activities
  (in millions) ..........................     $187.6       $232.1     $(44.5)

      Cash  provided by operating  activities  decreased  during the first three
months of 2000,  when  compared  to the same  period in 1999,  primarily  due to
higher recovery of deferred fuel costs in 1999.

                                                2000        1999      Decrease
                                                ----        ----      --------
Net cash used in investing activities
  (in millions) ..........................    $ (94.2)      $(114.4)   $20.2

      Cash used in investing  activities decreased during 2000, when compared to
1999, primarily due to a decrease in the level of construction expenditures.

                                                2000        1999      Decrease
                                                ----        ----      --------
Net cash used in financing activities
  (in millions) ..........................    $(128.7)      $(89.5)    $(39.2)

      Cash used in financing  activities decreased during 2000, when compared to
1999,  primarily  due to higher net proceeds from debt  financing  activities in
1999.  During the first quarter of 1999,  PSCo refinanced  approximately  $48.75
million to take advantage of lower interest rates and SPS issued $100 million of
senior notes used initially for the repayment of short-term debt.

Financing Activities

Long-Term Debt

      During the first quarter of 2000,  SPS  repurchased in the open market $27
million of its First Mortgage Bonds.

      During  the first  quarter  of 1999,  PSCo  refinanced  a  portion  of its
pollution  control  bonds in the amount of $48.75  million to take  advantage of
lower interest  rates.  The interest rate on the new bonds is 5.1% compared to 5
7/8% on $21.5 million and 7 3/8% on $27.25 million. In addition, SPS issued $100
million of 6.2% unsecured senior notes due March 1, 2009. The proceeds were used
initially for the repayment of certain  short-term debt,  pending the retirement
of $90 million of the SPS 6 7/8% First  Mortgage  Bonds due December 1, 1999 and
for other general corporate purposes.

                                       38
<PAGE>

      SPS closed a Credit  Agreement on February 25, 2000. The commitment  under
the Credit Agreement is $300 million and terminates on February 23, 2001.

Electric Utility Industry

      Electric  utilities  have  historically  operated  in a  highly  regulated
environment  in which they have an  obligation  to provide  electric  service to
their  customers  in return for an  exclusive  franchise  within  their  service
territory  with  an  opportunity  to  earn a  regulated  rate  of  return.  This
regulatory  environment  is  changing.  The  generation  sector has  experienced
competition from nonutility power producers and the FERC is requiring utilities,
including the Company's subsidiaries,  to provide wholesale transmission service
to others and may order electric utilities to expand their transmission  systems
to  facilitate  transmission  services  without  impairing  reliability.   State
regulatory  authorities  are in the process of changing  utility  regulations in
response to federal and state statutory changes and evolving markets,  including
consideration of providing open access to retail customers. All of the Company's
jurisdictions continue to study and evaluate utility regulations with respect to
competition. Restructuring legislation was passed in Texas and New Mexico during
1999, which is discussed below.

Restructuring Legislation (NCE and SPS)

      SPS is an integrated  electric  utility and serves  approximately  385,000
retail  customers in portions of the states of Texas,  New Mexico,  Oklahoma and
Kansas.  Over 97% of SPS' retail customers,  sales and revenues are in Texas and
New Mexico.  SPS serves wholesale  customers  within its service  territory that
comprise  approximately  30-35%  of  total  electric  revenues  and  Kwh  sales.
Restructuring  legislation  has  been  enacted  in  Texas  and  New  Mexico,  as
summarized  below.  SPS has and  continues to make filings with the PUCT and the
NMPRC, as required under each state's  legislation,  to address  critical issues
related to SPS'  transition  plans for retail  competition.  SPS  believes  that
retail  competition  will be implemented in these states on or before January 1,
2002.  Texas will institute a 5% pilot program  beginning  June 2001.  State and
Federal  regulators  will be  addressing  a  number  of  issues  related  to the
implementation of restructuring  during 2000 and 2001. SPS is diligently working
to satisfy the conflicting legislative and regulatory requirements in developing
its  transition  plans.  It is  currently  anticipated  that the  implementation
approach  being  developed  in Texas,  as  discussed  below,  will  satisfy  the
legislative  and  regulatory  requirements  in New Mexico and will be consistent
with other state and Federal regulations.

Overview of New Mexico Legislation

      On April 8, 1999,  New Mexico enacted the Electric  Utility  Restructuring
Act  of  1999,  which  provides  for  customer  choice  for  residential,  small
commercial and educational customers beginning January 1, 2001 and all remaining
retail customers beginning January 1, 2002. Customers of a municipal utility and
customers of a distribution  cooperative utility will be afforded choice only if
the  respective  utility elects to  participate.  The  legislation  provides for
recovery of no less than 50% of stranded  costs for all  utilities as quantified
by the NMPRC.  Transition  costs must be  approved  by the NMPRC  prior to being
recovered  through a non-by-passable  wires charge,  which must be included in a
transition  plan filing due to be filed on June 1, 2000.  SPS must  separate its
utility  operations  into at  least  two  segments:  1)  energy  generation  and
competitive  services and 2)  transmission  and  distribution  utility  services
either by the  creation  of  separate  affiliates  that may be owned by a common
holding  company  or by the  sale of  assets  to one or more  third  parties.  A
regulated  company,  in  general,  is  prohibited  from  providing   unregulated
services.

      In January 2000, SPS  petitioned  and received  approval from the NMPRC to
file its transition plan by June 1, 2000.  Additionally,  SPS requested that the
NMPRC  postpone the beginning of customer  choice for certain  retail  customers
until June 1, 2001 and postpone the completion of SPS corporate  separation from
January 1, 2001 to January 1, 2002.  The NMPRC  considered  these  requests  and
comments by other New Mexico  utilities.  On April 20, 2000, the NMPRC approved:
1) a one-year delay of customer  choice for  residential,  small  commercial and
educational  customers to January 1, 2002 (the timing for implementing  customer
choice for other

                                       39
<PAGE>

retail customers has not been finalized) and 2) SPS' proposal to delay corporate
separation  for one year.  Final  written  orders  related to these  matters are
pending.

Overview of Texas Legislation

      On June 18,  1999,  an electric  utility  restructuring  act  ("SB-7") was
passed in Texas, which provides for the implementation of retail competition for
most areas of the state  beginning  January 1, 2002. The  legislation  requires,
among other things, a rate freeze for all customers, effective September 1, 1999
until January 1, 2002,  together with an annual earnings test through 2001; a 6%
rate reduction for those  residential and small commercial  customers who choose
not to switch  suppliers at the start of retail  competition;  the unbundling of
business  activities,  costs and rates relating to generation,  transmission and
distribution  and retail  services;  reductions in NOx and SO2 emissions and the
recovery of stranded costs.  The PUCT can delay the date for retail  competition
if a power  region is unable to offer  fair  competition  and  reliable  service
during the 2001 pilot projects.

      Overall, SB-7's objective is to introduce full retail competition into the
Texas  electric  utility  industry.  SB-7  requires each utility to unbundle its
business  activities into three separate legal entities:  1) a power  generation
company, 2) a regulated  transmission and distribution  company, and 3) a retail
electric  provider.  SB-7  limits  the  market  share  that a single  generation
provider can control to 20% of the  generating  capacity  within a power region.
The establishment of a qualified power region with multiple generation suppliers
is  required  under SB-7 in order to  implement  full retail  competition.  SB-7
specifically  addresses competition in the Texas Panhandle,  where SPS operates,
recognizing that certain  transmission  constraints exist within the region that
may require full retail customer choice to develop on a more structured schedule
than the rest of the state.  SPS must file a transition to competition plan with
the PUCT by December 1, 2000.  SPS, with no estimated net stranded  costs,  must
return any excess  earnings  indicated in the annual earnings tests to customers
during the period January 1, 1999 through December 31, 2001 or alternatively may
direct any excess  earnings to improvements  in  transmission  and  distribution
facilities,  to capital expenditures to improve air quality or to accelerate the
amortization of regulatory assets (subject to PUCT approval).

Implementation Approach

      SPS filed its business  separation  plan in Texas during the first quarter
of 2000 for the unbundling of business  activities relating to power generation,
transmission and distribution and retail electric provider services. In summary,
SPS has  committed to separate  into  distinct  businesses  and to operate in an
arm's length manner so that the  transactions  between  affiliated  entities and
regulated  entities  do not confer any unduly  competitive  advantages  on NCE's
businesses as compared to non-affiliates.  In April 2000, the PUCT approved SPS'
business separation plan.  Overall,  the plan provides for the separation of all
competitive energy services by September 1, 2000, including the establishment of
an NCE customer care company,  which will provide  customer  services for all of
NCE's operating utilities and a formal code of conduct and compliance manual for
managing affiliate  transactions.  Prior to any legal separation and unbundling,
SPS will be required to address the provisions  limiting or otherwise  affecting
such  activities  contained in its first mortgage bond  indenture.  SPS plans to
arrange  interim  financing,  as  approved  by the NMPRC,  to enable open market
purchases  and/or tender and/or  monetary  defeasance of all  outstanding  first
mortgage bonds. Subject to all required approvals and indebtedness restrictions,
it is  anticipated  that all  generation-related  and certain  other  assets and
liabilities will be transferred at net book value to newly-formed  affiliates in
accordance with SPS' business  separation plan (up to approximately  50% of SPS'
assets).  It is  expected  that  SPS and  its  affiliates  will  be  capitalized
consistent with their respective business operations.

      On April 18, 2000,  SPS entered into a  Stipulation  with the staff of the
PUCT and other  significant  parties,  which was filed with the PUCT,  and among
other  things,  specifically  addresses  SPS  implementation  plans  to meet the
requirements of the Texas deregulation legislation.  In summary, the Stipulation
provides for the  implementation  of full retail  customer  choice by SPS in its
Texas service region, including the future divestiture of certain SPS generation
assets.  Subject to certain  market  conditions,  SPS has agreed to divest 1,750
megawatts,  at a minimum, by January 1, 2002 and has specifically identified the
plants that it would sell in connection with

                                       40
<PAGE>

additional  divestitures required to establish a qualified power region. For SPS
to comply with this  qualified  power region  requirement  and to implement full
customer  choice in Texas,  a minimum of 2,843  megawatts and a maximum of 3,184
megawatts of existing power generation  assets or capacity must be sold to third
party  non-affiliates.  SPS has  committed  to complete  these  divestitures  by
January  1,  2006.  These  divestitures  represent  approximately  64-71% of the
generation capacity owned by SPS and its affiliates.  SPS expects some or all of
these  divestitures  to  be  completed  by  the  end  of  2001.  Assuming  these
divestitures are completed, approximately 1,281 to 1,608 megawatts of generation
capacity in Texas and New Mexico  would be  retained  by the Company  through an
affiliated power generation company. Management believes that these divestitures
are in response to the legal  requirements of SB-7 and, that these  divestitures
can occur consistent with the pooling-of-interests  accounting requirements. The
Stipulation provides that if the SEC determines that the divestitures would be a
pooling  violation,  the  divestitures  would be  scheduled  to meet  the  SEC's
pooling-of-interests requirements.

     The Stipulation also resolves certain issues related to the proposed merger
between NCE and NSP and concludes that such merger is in the public interest.  A
PUCT  meeting is  scheduled  to address  this  matter on May 18, 2000 and a rate
order approving the NCE/NSP Merger is expected during the second quarter of 2000
(see Note 2. Proposed Merger with Northern States Power Company).

     SPS  has  committed,  upon  closing  of the  NCE/NSP  Merger,  to  transfer
functional  control  of  its  electric   transmission   system  to  the  Midwest
Independent System Operator, Inc. ("MISO"), a regional transmission organization
that will  operate the  transmission  systems of multiple  owners in the central
United States.

     SPS  filed  a rate  case  on  March  31,  2000  to set  the  rates  for the
transmission  and  distribution   services,   which  are  to  be  unbundled  and
implemented  on  January  1,  2002.  The  Company  requested   recovery  of  all
jurisdictional  costs  associated with  restructuring  in Texas.  Hearings and a
final rate order are not expected before 2001.

Financial Reporting Matters

      SPS prepares its financial statements in accordance with SFAS 71 (see Note
1. Summary of Significant  Accounting Policies).  The Emerging Issues Task Force
of the  Financial  Accounting  Standards  Board reached a consensus in Issue No.
97-4, "Deregulation of the Pricing of Electricity" ("EITF 97-4") indicating that
when  deregulatory  legislation  is passed or when a rate  order  (whichever  is
necessary to effect change in the jurisdiction) that contains  sufficient detail
for an enterprise to reasonably  determine how the  transition  plan will affect
the  separable  portion of its business  whose pricing is being  deregulated  is
issued, the enterprise should stop applying SFAS 71 to that separable portion of
its business. Restructuring legislation has been enacted in Texas and New Mexico
and a settlement has been achieved with all  intervenors in Texas.  Absent final
approvals  of the  Stipulation  and  such  transition  plans by the PUCT and the
NMPRC, uncertainties continue to exist which preclude a reasonable determination
of the impacts of the deregulation of SPS' generation business and discontinuing
the  application  of  SFAS  71 to  that  operation.  SPS  will  discontinue  the
application  of SFAS 71 related to the  generation  portion of its business when
the  provisions of EITF 97-4 have been met, which may be in 2000 and could be as
early as the second  quarter.  The  accounting  for the  discontinuation  of the
application  of SFAS 71 could  include the  write-off of all  generation-related
regulatory assets  (approximately $20 million) and an impairment of other assets
resulting from deregulation.

     Additionally,  there may be other  significant  financial  implications  of
implementing SB-7 and electric  restructuring in New Mexico.  These implications
include,  but are not limited to, the refinancing of securities,  investments in
information  technology,  establishing an independent  operation of the electric
transmission   systems,   implementing   the  procedures  to  govern   affiliate
transactions,  the  pricing of  unbundled  energy  services  and the  regulatory
recovery of incurred costs related to these issues.  Based on current  estimates
these incurred costs could be as much as $150 million.

     The resolution of these matters may have a significant  financial impact on
the financial position, results of operations and cash flows of SPS and NCE.


                                       41
<PAGE>

PSCo's  Management's  Discussion and Analysis of Financial Condition and Results
of Operations

Three Months  Ended March 31, 2000  Compared to the Three Months Ended March 31,
1999

Earnings Available for Common Stock

      Earnings  were $68.8 million for the first quarter of 2000, as compared to
$65.9  million for the first quarter of 1999,  primarily due to higher  earnings
from the gas utility  business  resulting from customer  growth and higher rates
effective July 1, 1999.

Electric Operations

      The following table details the change in electric  operating revenues and
energy costs for the three months ended March 31, 2000,  as compared to the same
period in 1999 (in thousands).

                                                 Increase
                                                 --------
Electric operating revenues:
 Retail.......................................    $ 2,140
 Wholesale....................................     16,112
 Other (including unbilled revenues)..........      6,521
                                                  -------
  Total revenues..............................     24,773
Fuel used in generation.......................      4,337
Purchased power...............................     18,930
                                                  -------
  Net increase in electric margin.............    $ 1,506
                                                  =======

       The following table compares electric Kwh sales by major customer classes
for the three months ended March 31, 2000 and 1999.
                                    Millions of Kwh Sales
                                        2000     1999      % Change *
                                        ----     ----      ----------
Residential .....................       1,946    1,932        0.7%
Commercial and Industrial .......       3,961    3,922        1.0
Public Authority ................          63       48       30.3
                                       ------   ------
  Total Retail...................       5,970    5,902        1.2
Wholesale .......................       2,088    1,852       12.7
                                       ------   ------
Total............................       8,058    7,754        3.9
                                       ======   ======
Power Marketing and Trading......       6,630      403       10.7
                                       ======   ======

*   Percentages are calculated using unrounded amounts

      Electric  margin  increased in the first quarter of 2000, when compared to
the  first  quarter  of  1999,  primarily  due to  higher  retail  sales of 1.2%
resulting  primarily  from customer  growth of  approximately  2.6%.  The higher
margin was offset, in part, by the negative impact of cost sharing under the ICA
(approximately $5.2 million). The ICA is a cost adjustment mechanism that allows
for a 50%/50%  sharing of certain fuel and energy cost  increases  and decreases
among customers and shareholders.  Provisions for estimated  customer refunds in
connection  with the  sharing of earnings in excess of 11% return on equity were
approximately  $2.5  million and $3.8  million in the first  quarter of 2000 and
1999,  respectively  (see  Note 4.  Regulatory  Matters  in  Item  1.  FINANCIAL
STATEMENTS).  Power  marketing and trading  activities  have increased  although
revenues and purchased  energy costs for these  activities are presented net for
financial  reporting purposes.  Activities from wholesale  marketing  positively
contributed to electric margin, but the amount was not significant.

      Fuel used in  generation  expense  increased  approximately  $4.3  million
during  the first  quarter of 2000,  as  compared  to the same  quarter in 1999,
primarily due to higher  generation  and higher gas costs for generation at Fort
St. Vrain.

                                       42
<PAGE>

      Purchased  power expense  increased $18.9 million during the first quarter
of 2000,  as compared to the same  quarter in 1999,  primarily  due to increased
purchases  resulting in part from an extended outage at one of PSCo's generating
stations.

Gas Operations

      The following  table details the change in revenues from gas sales and gas
purchased  for resale for the first  quarter of 2000,  as  compared  to the same
period in 1999 (in thousands).

                                                             Increase
                                                             --------

Revenues from gas sales (including unbilled
  revenues of $6.4 million) ....................             $14,860
Gas purchased for resale........................               3,507
                                                              ------
  Net increase in gas sales margin..............              11,353
Transportation revenues.........................               1,690
                                                              ------
  Increase in net gas margin....................             $13,043
                                                             =======

      The following table compares gas Dth deliveries by major customer  classes
for the first quarter of 2000 and 1999.
                                  Millions of Dth Deliveries
                                        2000      1999     % Change *
                                        ----      ----     ----------
Residential...................          37.1      37.9     (2.1)%
Commercial....................          16.2      17.1     (5.6)
                                     -------  --------
  Total sales.................          53.3      55.0     (3.2)
Transportation................          28.8      26.5      8.5
                                     -------  --------
  Total.......................          82.1      81.5      0.6
                                     =======  ========

*  Percentages are calculated using unrounded amounts

      Gas sales margin increased during the first quarter of 2000, when compared
to the first quarter of 1999,  primarily due to higher base gas rates  effective
July 1,  1999,  resulting  from  PSCo's  1998 gas rate case  which  provided  an
additional $5.8 million in revenues and the favorable impacts of customer growth
of 3.6% and higher sales  resulting from winter weather during the first quarter
of 2000 as it was approximately 6% colder than the first quarter of 1999.

      Gas  transportation  revenues  increased  $1.7  million  during  the first
quarter of 2000, compared to the first quarter of 1999,  primarily due to higher
deliveries and higher transportation rates effective July 1, 1999. The growth in
the  transport  business  continues  to be impacted  by the  shifting of various
commercial  customers to transport customers and additional capacity on a leased
gas pipeline.

      PSCo has in place a GCA mechanism for natural gas sales,  which recognizes
the majority of the effects of changes in the cost of gas  purchased  for resale
and adjusts  revenues to reflect such changes in costs on a timely  basis.  As a
result,  the changes in revenues  associated  with these  mechanisms  during the
first  quarter of 2000,  as  compared to the first  quarter of 1999,  had little
impact on net income.  However, the fluctuations in gas sales impacts the amount
of gas PSCo must purchase and, therefore, along with the increases and decreases
in the per-unit cost of gas, affect total gas purchased for resale.

Non-Fuel Operating Expenses and Other Income and Deductions

      Other  operating and maintenance  expenses  increased  approximately  $3.2
million primarily due to higher gas transmission costs related to the lease of a
gas pipeline to support  customer growth and higher steam  generation  operation
costs.  These costs were offset, in part, by lower electric and gas distribution
maintenance expense.

                                       43
<PAGE>

      Taxes other than income taxes decreased  approximately $2.1 million during
the first quarter of 2000,  as compared to the first quarter of 1999,  primarily
due to lower business and utility property taxes in Colorado.

      Income taxes increased approximately $6.6 million during the first quarter
of 2000, as compared to the first  quarter of 1999,  due to higher pretax income
in the current period and the favorable  impact of deducting  certain prior year
severance costs in 1999.

      Interest  charges  increased  approximately  $3.8 million during the first
quarter of 2000,  as  compared  to the first  quarter of 1999.  The  increase is
primarily  attributable  to costs to  finance  capital  expenditures,  including
higher interest costs on short-term debt. In July 1999, PSCo issued $200 million
of 6 7/8% Series A Senior Notes, due in July 2009.

Commitments and Contingencies

     See Note 4. Regulatory Matters and Note 5. Commitments and Contingencies in
Item 1. FINANCIAL STATEMENTS.

Financing Activities

      Discussion  relating  to PSCo's  financing  activities  is  covered  under
"Financing  Activities"  in  NCE's  Management's   Discussion  and  Analysis  of
Financial Condition and Results of Operations.



                                       44
<PAGE>


SPS's Management's Discussion and Analysis of Financial Condition and Results of
Operations

Three Months  Ended March 31, 2000  Compared to the Three Months Ended March 31,
1999

Earnings Available for Common Stock

      Earnings  available for common stock were $18.3  million  during the first
quarter of 2000 compared to $23.4 million for the same quarter in 1999. Earnings
decreased  primarily due to higher utility  operations and minimal  customer and
sales growth, due in part to the unfavorable impact of mild winter weather.

Operating Revenues

Electric Operations

      Substantially  all of SPS's  operating  revenues  result  from the sale of
electric energy.  The principal  factors  impacting  revenues are the amount and
price of energy  sold.  The  following  table  details  the  change in  electric
operating  revenues and energy costs for the first  quarter of 2000, as compared
to the same period in 1999 (in thousands).

                                            Increase (Decrease)
                                            -------------------
     Electric operating revenues:
      Retail..............................        $  (547)
      Wholesale...........................         11,358
      Other (including unbilled revenues).          2,869
                                                  -------
        Total revenues....................         13,680
     Fuel used in generation..............          4,640
     Purchased power......................         16,056
                                                  -------
        Net decrease in electric margin...        $(7,016)
                                                  =======

      The following table compares  electric Kwh sales by major customer classes
for the first quarter of 2000 and 1999.

                                      Millions of Kwh Sales
                                        2000        1999        % Change*
                                        ----        ----        ---------
      Residential ............           746         717           4.1%
      Commercial and Industrial        2,865       2,574          11.3
      Public Authority .......           140         133           5.6
                                       -----       -----
        Total Retail..........         3,751       3,424           9.6
      Wholesale...............         1,729       1,333          29.7
                                       -----       -----
      Total...................         5,480       4,757          15.2
                                       =====       =====

* Percentages are calculated using unrounded amounts.

      Electric  operating  revenues  increased  $13.7 million or 6.8% during the
first  quarter in 2000,  when  compared to the same period in 1999.  While total
sales increased approximately 15%, the majority of this increase is due to lower
Kwh sales reported in 1999. During 1999, changes were made in the billing cycles
of various retail and wholesale  customers in anticipation of implementing a new
customer  information system which resulted in lower billed Kwh sales and higher
unbilled  revenues.  Unbilled revenues were lower for the first quarter of 2000,
when  compared  to the same  period in 1999.  Weather  throughout  SPS'  service
territory was over 20% warmer than normal and  approximately  5% warmer than the
prior year, contributing to the overall decrease in electric margin.

      Fuel used in generation  expense increased $4.6 million or 5.7% during the
first quarter of 2000,  when compared to the same period in 1999,  primarily due
to a 5% increase in generation  levels required to serve retail customers and by
significantly  higher gas costs as a result of increased gas prices and slightly
higher coal costs.

                                       45
<PAGE>

      Purchased  power increased $16.1 million during the first quarter of 2000,
when compared to the same period in 1999,  due to an increase in capacity  costs
of $6.5  million  related to new  purchase  power  contracts  and an increase in
wholesale  purchases.  SPS  generates  the majority of its power for sale to its
firm retail and  wholesale  customers  and sells  non-firm  energy as the market
demands.  Similarly,  SPS will purchase  low-cost non-firm energy when available
and as needed to meet customer requirements.

      SPS has fuel cost  adjustment  mechanisms  which recognize the majority of
the effects of changes in fuel used in generation and purchased  power costs and
allow  recovery  of such costs on a timely  basis.  As a result,  the changes in
revenues associated with these mechanisms during the first quarter of 2000, when
compared to the first  quarter of 1999,  had little  impact on net income.  (See
discussion on "SPS  Electric  Cost  Adjustment  Mechanisms"  Note 4.  Regulatory
Matters - in Item 1. FINANCIAL STATEMENTS).

Non-Fuel Operating Expenses

     Other  operating and  maintenance  expenses  increased $2.1 million or 6.1%
during  the first  quarter  of 2000,  as  compared  to the same  period in 1999,
primarily due to higher costs associated with restructuring  activities in Texas
and New  Mexico as well as  increases  in  customer  expenses  and  transmission
operations.

     Income taxes  decreased  $3.4 million  during the first quarter of 2000, as
compared  to the same  period  in 1999,  primarily  due to the  effect  of lower
pre-tax income.  The effective  income tax rates for the quarter ended March 31,
2000 and 1999 were 37.5% and 38.1%, respectively.

Interest Charges

     Interest charges increased $1.2 million or 8.9% during the first quarter of
2000,  as  compared  to the same  period  in 1999.  The  increase  is  primarily
attributable to costs to finance capital expenditures, including higher interest
costs on short-term debt.

Commitments and Contingencies

     See Note 4. Regulatory Matters and Note 5. Commitments and Contingencies in
Item 1. FINANCIAL STATEMENTS.

Restructuring Legislation and Financing Activities

     Discussion  relating  to the  changing  regulatory  environment,  including
restructuring   legislation  and  SPS  financing  activities  is  covered  under
"Electric  Utility  Industry" and "Financing  Activities" in NCE's  Management's
Discussion and Analysis of Financial Condition and Results of Operations.


                                       46
<PAGE>


                           PART II - OTHER INFORMATION

Item 1.  Legal Proceedings

     Part 1.  See  Note 4.  Regulatory  Matters  and  Note  5.  Commitments  and
Contingencies in Item 1, Part 1.


Item 6.  Exhibits and Reports on Form 8-K

(a)   Exhibits

      12(a) Computation of Ratio of Consolidated  Earnings to Consolidated Fixed
            Charges for PSCo is set forth at page 50 herein.
      12(b) Computation of Ratio of Consolidated  Earnings to Consolidated Fixed
            Charges for SPS is set forth at page 51 herein.

      15(a) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 52 herein for NCE.
      15(b) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 53 herein for PSCo.
      15(c) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 54 herein for SPS.

      27(a) Financial Data Schedule for NCE as of March 31, 2000.
      27(b) Financial Data Schedule for PSCo as of March 31, 2000.
      27(c) Financial Data Schedule for SPS as of March 31, 2000.

(b) Reports on Form 8-K

The  following  report on Form 8-K was filed  since the  beginning  of the first
quarter of 2000.

- - A combined  report on Form 8-K dated April 18, 2000, was  separately  filed by
NCE and SPS on April 19, 2000.  The items  reported  were Item 5. Other  Events:
Stipulation  agreement executed which addresses SPS implementation plans to meet
the  requirements of the Texas  restructuring  legislation and resolves  certain
issues related to the NCE/NSP Merger.


                                       47
<PAGE>


                           NEW CENTURY ENERGIES, INC.
                                    SIGNATURE

      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934, New Century Energies,  Inc. has duly caused this report to
be signed on its behalf by the  undersigned,  thereunto  duly  authorized on the
12th day of May, 2000.

                                          NEW CENTURY ENERGIES, INC.

                                          By     /s/ R. C. Kelly
                                          ---------------------------------
                                                   R. C. Kelly
                                          Executive Vice President and
                                             Chief Financial Officer


                       PUBLIC SERVICE COMPANY OF COLORADO
                                    SIGNATURE

      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934,  Public  Service  Company of Colorado has duly caused this
report to be signed on its behalf by the undersigned,  thereunto duly authorized
on the 12th day of May, 2000.


                                          PUBLIC SERVICE COMPANY OF COLORADO

                                          By   /s/Brian P. Jackson
                                          ---------------------------------
                                                Brian P. Jackson
                                          Senior Vice President, Finance and
                                            Administrative Services,
                                           Chief Financial Officer and
                                                    Treasurer



                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                                    SIGNATURE

      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934,  Southwestern  Public Service Company has duly caused this
report to be signed on its behalf by the undersigned,  thereunto duly authorized
on the 12th day of May, 2000.


                                          SOUTHWESTERN PUBLIC SERVICE COMPANY

                                          By   /s/Brian P. Jackson
                                          ---------------------------------
                                                Brian P. Jackson
                                          Senior Vice President, Finance and
                                            Administrative Services,
                                          Chief Financial Officer and
                                                    Treasurer

                                       48
<PAGE>

                                  EXHIBIT INDEX

2(a)1*  NCE/NSP  Agreement  and Plan of Merger  dated March 24, 1999 (Form 8-K,
        March 24, 1999, Exhibit 2.1).

3(a)1*  NCE Restated Articles of Incorporation dated December 8, 1995 (Form S-4,
        Exhibit 3(a)).
3(a)2*  PSCo Amended and Restated Articles of Incorporation dated July 10, 1998
        (Form 10-K, December 31, 1998, Exhibit 3(a)1).
3(a)3*  SPS Amended and Restated Articles of Incorporation  dated September 30,
        1997 (Form 10-K, December 31, 1997, Exhibit 3(a)2).

3(b) 1* NCE Restated  By-laws dated December 15, 1998 (Form 10-K, December 31,
        1998, Exhibit 3(b)1).
3(b) 2* PSCo By-laws dated November 20, 1997 (Form 10-K, December 31, 1997,
        Exhibit 3(b)1).
3(b) 3* SPS By-laws dated September 29, 1997 (Form 10-K, December 31, 1997,
        Exhibit 3(b)2).

12(a)   Computation of Ratio of Consolidated  Earnings  to  Consolidated  Fixed
        Charges for PSCo is set forth at page 50 herein.

12(b)   Computation of Ratio of Consolidated  Earnings  to  Consolidated  Fixed
        Charges for SPS is set forth at page 51 herein.

15(a)   Letter from Arthur Andersen LLP regarding unaudited interim information
        is set forth at page 52 herein for NCE.

15(b)   Letter from Arthur Andersen LLP regarding unaudited interim information
        is set forth at page 53 herein for PSCo.

15(c)   Letter from Arthur Andersen LLP regarding unaudited interim information
        is set forth at page 54 herein for SPS.

27(a)   Financial Data Schedule for NCE as of March 31, 2000.

27(b)   Financial Data Schedule for PSCo as of March 31, 2000.

27(c)   Financial Data Schedule for SPS as of March 31, 2000.

* Previously filed as indicated and incorporated herein by reference.



                                       49
<PAGE>


                                                                 EXHIBIT 12(a)

                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES

                  COMPUTATION OF RATIO OF CONSOLIDATED EARNINGS
                          TO CONSOLIDATED FIXED CHARGES

                 (not covered by Report of Independent Public Accountants)



                                                    Three Months Ended
                                                        March 31,
                                                      2000       1999
                                                      ----       ----
                                           (Thousands of Dollars, except ratios)

Fixed charges:
   Interest on long-term debt...................    $ 31,295   $ 28,800
   Interest on borrowings against corporate-owned
      life insurance contracts..................      15,354     13,704
   Other interest...............................       6,146      5,220
   Amortization of debt discount and expense less
      premium ..................................       1,227      1,083
   Interest component of rental expense.........       2,751      2,339
   Dividends on PSCo obligated mandatorily
     redeemable preferred securities............       3,800      3,800
                                                      ------     ------

     Total......................................    $ 60,573   $ 54,946
                                                    ========   ========

Earnings (before fixed charges and taxes on income):
   Net income...................................    $ 68,759   $ 65,939
   Fixed charges as above.......................      60,573     54,946
   Provisions for Federal and state taxes on
     income, net of investment tax credit
     amortization...............................      35,797     29,214
                                                     -------     ------

     Total......................................    $165,129   $150,099
                                                    ========   ========

Ratio of earnings to fixed charges..............        2.73       2.73
                                                      ======     ======

                                       50
<PAGE>



                                                                 EXHIBIT 12(b)

                       SOUTHWESTERN PUBLIC SERVICE COMPANY

                        COMPUTATION OF RATIO OF EARNINGS
                                TO FIXED CHARGES

                 (not covered by Report of Independent Public Accountants)



                                                    Three Months Ended
                                                        March 31,
                                                      2000       1999
                                                      ----       ----
                                           (Thousands of Dollars, except ratios)

Fixed charges:
   Interest on long-term debt...................    $ 10,147    $10,643
   Other interest...............................       3,731      1,590
   Amortization of debt discount and expense less
      premium                                            510        552
   Interest component of rental expense.........         183        191
   Dividends on SPS obligated mandatorily
     redeemable preferred securities............       1,963      1,963
                                                      ------     ------

     Total......................................     $16,534    $14,939
                                                     =======    =======

Earnings (before fixed charges and taxes on income):
   Net income...................................     $18,256    $23,391
   Fixed charges as above.......................      16,534     14,939
   Provisions for Federal and state taxes on income,
   net of investment tax credit amortization....      10,930     14,365
                                                      ------     ------

     Total......................................     $45,720    $52,695
                                                     =======    =======

Ratio of earnings to fixed charges..............        2.77       3.53
                                                      ======     ======


                                       51
<PAGE>



                                                                   EXHIBIT 15(a)

May 12, 2000


New Century Energies, Inc.:

     We are aware that New Century Energies,  Inc. has incorporated by reference
in its Registration  Statement (Form S-8, File No. 333-28639)  pertaining to the
Omnibus  Incentive  Plan;  its  Registration   Statement  (Form  S-3,  File  No.
333-28637)  pertaining to the Dividend  Reinvestment  and Cash Payment Plan; its
Registration   Statements  (Forms  S-3,  File  Nos.   333-40361  and  333-64067)
pertaining  to the  registration  of  NCE  Common  Stock  and  its  Registration
Statement  (Form  S-8,  File  No.  333-58117)  pertaining  to the  NCE  Employee
Investment  Plan and NCE Employees'  Savings and Stock  Ownership Plan, its Form
10-Q for the quarter ended March 31, 2000,  which  includes our report dated May
12, 2000, covering the unaudited  consolidated  condensed  financial  statements
contained therein.  Pursuant to Regulation C of the Securities Act of 1933, that
report  is not  considered  a part of the  registration  statement  prepared  or
certified  by our Firm or a report  prepared or certified by our Firm within the
meaning of Sections 7 and 11 of the Act.

                                                Very truly yours,



                                                ARTHUR ANDERSEN


                                       52
<PAGE>



                                                                   EXHIBIT 15(b)

May 12, 2000


Public Service Company of Colorado:

      We are aware that Public Service  Company of Colorado has  incorporated by
reference in its Registration Statement (Form S-3, File No. 33-62233) pertaining
to the Automatic  Dividend  Reinvestment  and Common Stock  Purchase  Plan;  its
Registration  Statement (Form S-3, File No.  33-37431) as amended on December 4,
1990,  pertaining  to the  shelf  registration  of  Public  Service  Company  of
Colorado's First Mortgage Bonds; its Registration  Statement (Form S-8, File No.
33-55432)  pertaining to the Omnibus Incentive Plan; its Registration  Statement
(Form S-3, File No.  33-51167)  pertaining to the shelf  registration  of Public
Service Company of Colorado's  First  Collateral  Trust Bonds;  its Registration
Statement (Form S-3, File No. 33-54877)  pertaining to the shelf registration of
Public Service Company of Colorado's First Collateral Trust Bonds and Cumulative
Preferred Stock and its  Registration  Statement (Form S-3, File No.  333-81791)
pertaining to the shelf  registration  of Public  Service  Company of Colorado's
Senior  Debt  Securities,  its Form 10-Q for the quarter  ended March 31,  2000,
which   includes  our  report  dated  May  12,  2000,   covering  the  unaudited
consolidated  condensed  financial  statements  contained  therein.  Pursuant to
Regulation C of the Securities Act of 1933, that report is not considered a part
of the  registration  statement  prepared or  certified  by our Firm or a report
prepared or certified by our Firm within the meaning of Sections 7 and 11 of the
Act.

                                                        Very truly yours,



                                                        ARTHUR ANDERSEN



                                       53
<PAGE>


                                                                   EXHIBIT 15(c)
May 12, 2000


Southwestern Public Service Company:

      We are aware that Southwestern  Public Service Company has incorporated by
reference  in  its  Registration   Statement  (Form  S-3,  File  No.  333-05199)
pertaining to  Southwestern  Public Service  Company's  Preferred Stock and Debt
Securities;  its Registration Statement (Form S-8, File No. 33-27452) pertaining
to  Southwestern  Public  Service  Company's  1989 Stock  Incentive Plan and its
Registration  Statement (Form S-8, File No. 33-57869) pertaining to Southwestern
Public Service  Company's  Employee  Investment  Plan and  Non-Qualified  Salary
Deferral  Plan,  its Form  10-Q for the  quarter  ended  March 31,  2000,  which
includes  our  report  dated May 12,  2000,  covering  the  unaudited  condensed
financial  statements  contained  therein.  Pursuant  to  Regulation  C  of  the
Securities Act of 1933, that report is not considered a part of the registration
statement prepared or certified by our Firm or a report prepared or certified by
our Firm within the meaning of Sections 7 and 11 of the Act.


                                                        Very truly yours,



                                                        ARTHUR ANDERSEN




                                       54


<TABLE> <S> <C>

<ARTICLE>                            UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION EXTRACTED FROM NEW CENTURY
ENERGIES,  INC.  CONSOLIDATED  CONDENSED  BALANCE SHEET AS OF MARCH 31, 2000 AND
CONSOLIDATED  CONDENSED STATEMENTS OF INCOME AND CASH FLOWS FOR THE THREE MONTHS
ENDED MARCH 31, 2000 AND IS  QUALIFIED  IN ITS  ENTIRETY  BY  REFERENCE  TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK>                                 0001004858
<NAME>                New Century Energies, Inc.
<MULTIPLIER>                               1,000

<S>                                  <C>
<PERIOD-TYPE>                              3-MOS
<FISCAL-YEAR-END>                    DEC-31-1999
<PERIOD-END>                         MAR-31-2000
<BOOK-VALUE>                            PER-BOOK
<TOTAL-NET-UTILITY-PLANT>              6,285,767
<OTHER-PROPERTY-AND-INVEST>              499,394
<TOTAL-CURRENT-ASSETS>                   809,479
<TOTAL-DEFERRED-CHARGES>                 575,909
<OTHER-ASSETS>                                 0
<TOTAL-ASSETS>                         8,170,549
<COMMON>                                 116,466
<CAPITAL-SURPLUS-PAID-IN>              1,817,848
<RETAINED-EARNINGS>                      857,225
<TOTAL-COMMON-STOCKHOLDERS-EQ>         2,785,056
                    294,000
                                    0
<LONG-TERM-DEBT-NET>                   2,259,864
<SHORT-TERM-NOTES>                       132,825
<LONG-TERM-NOTES-PAYABLE>                      0
<COMMERCIAL-PAPER-OBLIGATIONS>           457,609
<LONG-TERM-DEBT-CURRENT-PORT>            168,868
                      0
<CAPITAL-LEASE-OBLIGATIONS>               53,647
<LEASES-CURRENT>                           2,286
<OTHER-ITEMS-CAPITAL-AND-LIAB>         2,016,394
<TOT-CAPITALIZATION-AND-LIAB>          8,170,549
<GROSS-OPERATING-REVENUE>                938,670
<INCOME-TAX-EXPENSE>                      42,474
<OTHER-OPERATING-EXPENSES>               755,847
<TOTAL-OPERATING-EXPENSES>               755,847
<OPERATING-INCOME-LOSS>                  182,823
<OTHER-INCOME-NET>                        22,155
<INCOME-BEFORE-INTEREST-EXPEN>           204,978
<TOTAL-INTEREST-EXPENSE>                  57,176
<NET-INCOME>                             105,328
                    0
<EARNINGS-AVAILABLE-FOR-COMM>                  0
<COMMON-STOCK-DIVIDENDS>                  67,656
<TOTAL-INTEREST-ON-BONDS>                 43,535
<CASH-FLOW-OPERATIONS>                   187,593
<EPS-BASIC>                                 0.91
<EPS-DILUTED>                               0.91


</TABLE>

<TABLE> <S> <C>

<ARTICLE>                          UT
<LEGEND>
THIS SCHEDULE  CONTAINS  SUMMARY  FINANCIAL  INFORMATION  EXTRACTED  FROM PUBLIC
SERVICE  COMPANY OF COLORADO AND  SUBSIDIARIES  CONSOLIDATED  CONDENSED  BALANCE
SHEET AS OF MARCH 31, 2000 AND CONSOLIDATED  CONDENSED  STATEMENTS OF INCOME AND
CASH FLOWS FOR THE THREE  MONTHS  ENDED MARCH 31, 2000 AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>                               0000081018
<NAME>      Public Service Company of Colorado
<MULTIPLIER>                             1,000

<S>                                <C>
<PERIOD-TYPE>                            3-MOS
<FISCAL-YEAR-END>                  DEC-31-1999
<PERIOD-END>                       MAR-31-2000
<BOOK-VALUE>                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>            4,390,757
<OTHER-PROPERTY-AND-INVEST>            205,025
<TOTAL-CURRENT-ASSETS>                 459,385
<TOTAL-DEFERRED-CHARGES>               310,943
<OTHER-ASSETS>                               0
<TOTAL-ASSETS>                       5,366,110
<COMMON>                                     0
<CAPITAL-SURPLUS-PAID-IN>            1,414,835
<RETAINED-EARNINGS>                    367,118
<TOTAL-COMMON-STOCKHOLDERS-EQ>       1,781,953
                  194,000
                                  0
<LONG-TERM-DEBT-NET>                 1,633,612
<SHORT-TERM-NOTES>                           0
<LONG-TERM-NOTES-PAYABLE>                    0
<COMMERCIAL-PAPER-OBLIGATIONS>         232,393
<LONG-TERM-DEBT-CURRENT-PORT>          164,706
                    0
<CAPITAL-LEASE-OBLIGATIONS>             53,647
<LEASES-CURRENT>                         2,255
<OTHER-ITEMS-CAPITAL-AND-LIAB>       1,303,544
<TOT-CAPITALIZATION-AND-LIAB>        5,366,110
<GROSS-OPERATING-REVENUE>              680,550
<INCOME-TAX-EXPENSE>                    35,797
<OTHER-OPERATING-EXPENSES>             535,083
<TOTAL-OPERATING-EXPENSES>             570,880
<OPERATING-INCOME-LOSS>                109,670
<OTHER-INCOME-NET>                        (438)
<INCOME-BEFORE-INTEREST-EXPEN>         109,232
<TOTAL-INTEREST-EXPENSE>                40,473
<NET-INCOME>                            68,759
                  0
<EARNINGS-AVAILABLE-FOR-COMM>           68,759
<COMMON-STOCK-DIVIDENDS>                47,691
<TOTAL-INTEREST-ON-BONDS>               32,522
<CASH-FLOW-OPERATIONS>                 204,015
<EPS-BASIC>                               0.00
<EPS-DILUTED>                             0.00


</TABLE>

<TABLE> <S> <C>

<ARTICLE>                          UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SOUTHWESTERN
PUBLIC  SERVICE  COMPANY  CONDENSED  BALANCE  SHEET  AS OF  MARCH  31,  2000 AND
CONDENSED  STATEMENTS  OF INCOME AND CASH FLOWS FOR THE THREE MONTHS ENDED MARCH
31,  2000 AND IS  QUALIFIED  IN ITS  ENTIRETY  BY  REFERENCE  TO SUCH  FINANCIAL
STATEMENTS.
</LEGEND>
<CIK>                               0000092521
<NAME>     Southwestern Public Service Company
<MULTIPLIER>                             1,000

<S>                                <C>
<PERIOD-TYPE>                            3-MOS
<FISCAL-YEAR-END>                  DEC-31-1999
<PERIOD-END>                       MAR-31-2000
<BOOK-VALUE>                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>            1,776,912
<OTHER-PROPERTY-AND-INVEST>            125,015
<TOTAL-CURRENT-ASSETS>                 163,050
<TOTAL-DEFERRED-CHARGES>               171,658
<OTHER-ASSETS>                               0
<TOTAL-ASSETS>                       2,236,635
<COMMON>                                     0
<CAPITAL-SURPLUS-PAID-IN>              353,099
<RETAINED-EARNINGS>                    406,866
<TOTAL-COMMON-STOCKHOLDERS-EQ>         759,965
                  100,000
                                  0
<LONG-TERM-DEBT-NET>                   578,908
<SHORT-TERM-NOTES>                           0
<LONG-TERM-NOTES-PAYABLE>                    0
<COMMERCIAL-PAPER-OBLIGATIONS>         225,234
<LONG-TERM-DEBT-CURRENT-PORT>                0
                    0
<CAPITAL-LEASE-OBLIGATIONS>                  0
<LEASES-CURRENT>                             0
<OTHER-ITEMS-CAPITAL-AND-LIAB>         572,528
<TOT-CAPITALIZATION-AND-LIAB>        2,236,635
<GROSS-OPERATING-REVENUE>              216,232
<INCOME-TAX-EXPENSE>                    10,930
<OTHER-OPERATING-EXPENSES>             175,151
<TOTAL-OPERATING-EXPENSES>             186,081
<OPERATING-INCOME-LOSS>                 30,151
<OTHER-INCOME-NET>                       3,410
<INCOME-BEFORE-INTEREST-EXPEN>          33,561
<TOTAL-INTEREST-EXPENSE>                15,305
<NET-INCOME>                            18,256
                  0
<EARNINGS-AVAILABLE-FOR-COMM>           18,256
<COMMON-STOCK-DIVIDENDS>                19,674
<TOTAL-INTEREST-ON-BONDS>               10,657
<CASH-FLOW-OPERATIONS>                  29,382
<EPS-BASIC>                               0.00
<EPS-DILUTED>                             0.00


</TABLE>


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