PUBLIC SERVICE CO OF COLORADO
10-Q, 2000-08-07
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 June 30, 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
Commission  offices 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 August 1, 2000, 116,766,809 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 $4,130,625,868.

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 ...................................     39


                          PART II - OTHER INFORMATION


Item 1.  Legal Proceedings..............................................   57

Item 6.  Exhibits and Reports on Form 8-K...............................   57








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
PSCCC........................Public Service Company Credit Corporation
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

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Property, plant and equipment, at cost:
   Electric ..........................................    $7,695,165 $7,496,942
   Gas................................................     1,362,575  1,327,048
   Steam and other....................................       116,019    113,050
   Common to all departments..........................       483,364    464,059
   Construction in progress...........................       360,845    400,439
                                                             -------    -------
                                                          10,017,968  9,801,538
   Less: accumulated depreciation ....................     3,687,879  3,540,516
                                                           ---------  ---------

     Total property, plant and equipment..............     6,330,089  6,261,022
                                                           ---------  ---------




Investments, at cost:
   Investment in Yorkshire Power and other
     unconsolidated subsidiaries (Note 3) ............       402,793    391,754
   Other..............................................       131,664     89,404
                                                             -------    -------
    Total investments.................................       534,457    481,158
                                                             -------    -------


Current assets:
   Cash and temporary cash investments................        36,109     83,763
   Accounts receivable, less reserve for uncollectible
     accounts ($4,696 at June 30, 2000; $4,601 at
     December 31, 1999)...... ........................       368,398    371,116
   Accrued unbilled revenues..........................       254,090    266,537
   Recoverable purchased gas and electric energy costs        58,122     46,863
   Materials and supplies, at average cost............        73,191     75,021
   Fuel inventory, at average cost....................        29,979     29,618
   Gas in underground storage, at cost (LIFO).........        28,916     63,656
   Prepaid expenses...................................        82,789     74,905
   Other..............................................         4,947     15,659
                                                             -------    -------
    Total current assets..............................       936,541  1,027,138
                                                             -------  ---------

Deferred charges:
   Regulatory assets (Note 1).........................       295,887    337,965
   Unamortized debt expense...........................        29,436     29,775
   Other..............................................       241,619    184,934
                                                             -------    -------
    Total deferred charges............................       566,942    552,674
                                                             -------    -------
                                                          $8,368,029 $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

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Common stock..........................................   $1,944,007  $1,916,088
Retained earnings.....................................      870,420     819,553
Accumulated other comprehensive income (Note 1) ......      (24,879)     (2,951)
                                                            -------      ------
    Total common equity...............................    2,789,548   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........................    2,248,618   2,374,121
                                                          ---------   ---------
                                                          5,332,166   5,400,811

Noncurrent liabilities:
   Employees' postretirement benefits other than pensions    54,168      57,596
   Employees' postemployment benefits.................       32,566      32,823
                                                             ------      ------
    Total noncurrent liabilities......................       86,734      90,419
                                                             ------      ------

Current liabilities:
   Notes payable and commercial paper.................      791,250     633,527
   Long-term debt due within one year.................      176,634     136,218
   Accounts payable...................................      440,734     471,757
   Dividends payable..................................       69,874      70,045
   Recovered electric energy costs....................       15,481      11,873
   Customers' deposits................................       31,300      30,810
   Accrued taxes......................................       50,812      88,617
   Accrued interest...................................       59,859      61,701
   Other..............................................      154,765     152,535
                                                            -------     -------
    Total current liabilities.........................    1,790,709   1,657,083
                                                          ---------   ---------

Deferred credits:
   Customers' advances for construction...............       64,614      56,259
   Unamortized investment tax credits.................       93,017      95,426
   Accumulated deferred income taxes..................      957,663     967,408
   Other..............................................       43,126      54,586
                                                            -------      ------
    Total deferred credits............................    1,158,420   1,173,679
                                                          ---------   ---------

Commitments and contingencies (Notes 4 and 5).........   ----------  ----------
                                                         $8,368,029  $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
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating revenues:
   Electric...........................................       $715,104  $607,277
   Gas................................................        139,359   173,172
   Other..............................................         22,389    20,385
                                                              -------    ------
                                                              876,852   800,834

Operating expenses:
   Fuel used in generation............................        167,801   152,857
   Purchased power....................................        179,770   130,635
   Cost of gas sold...................................         82,560   114,502
   Other operating and maintenance expenses-regulated.        132,959   137,040
   Other operating and maintenance expenses-nonregulated       22,589    28,308
   Depreciation and amortization......................         73,805    69,895
   Taxes (other than income taxes) ...................         32,789    37,477
                                                              -------    ------
                                                              692,273   670,714
Operating income......................................        184,579   130,120

Other income and deductions:
   Equity in earnings of Yorkshire Power and other
    unconsolidated subsidiaries (Note 3)                        9,499    (2,787)
   Miscellaneous income and deductions - net..........          2,414    (2,609)
                                                              -------   -------
                                                               11,913    (5,396)

Interest charges and preferred dividends of subsidiaries:
   Interest on long-term debt.........................         43,467    43,942
   Other interest.....................................         12,571     7,362
   Allowance for borrowed funds used during construction       (3,491)   (2,611)
   Dividends on PSCo and SPS obligated mandatorily
     redeemable preferred securities of subsidiary
     trusts holding solely  subordinated  debentures of
    PSCo and SPS......................................          5,762     5,762
                                                                -----     -----
                                                               58,309    54,455

Income before income taxes and extraordinary item.....        138,183    70,269
Income taxes..........................................         43,602    21,034
                                                              -------    ------
Income before extraordinary item......................         94,581    49,235
Extraordinary item (Notes 1 and 4)....................        (13,658)        -
                                                              -------    ------
Net income............................................        $80,923   $49,235
                                                              =======   =======

Weighted average common shares outstanding:
   Basic..............................................        116,611   115,080
   Diluted............................................        116,649   115,103

Basic and diluted earnings per share of common stock
 outstanding:
   Income before extraordinary item...................        $  0.81    $ 0.43
   Extraordinary item (Notes 1 and 4).................          (0.12)        -
                                                              --------   ------
   Net income.........................................        $  0.69    $ 0.43
                                                              =======    ======


      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 INCOME
                                   (Unaudited)
                             (Thousands of Dollars)

                                                              Six Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating revenues:
   Electric...........................................    $1,348,226 $1,201,808
   Gas................................................       423,394    478,307
   Other..............................................        43,902     35,414
                                                             -------     ------
                                                           1,815,522  1,715,529

Operating expenses:
   Fuel used in generation............................       310,696    286,706
   Purchased power....................................       342,399    257,879
   Cost of gas sold...................................       269,313    333,581
   Other operating and maintenance expenses-regulated.       266,865    266,466
   Other operating and maintenance expenses-nonregulated      45,839     48,991
   Depreciation and amortization......................       145,995    139,397
   Taxes (other than income taxes) ...................        67,013     75,097
                                                             -------     ------
                                                           1,448,120  1,408,117
Operating income......................................       367,402    307,412

Other income and deductions:
   Equity in earnings of Yorkshire Power and other
     unconsolidated subsidiaries (Note 3).............        32,640     13,024
   Miscellaneous income and deductions - net..........         1,428     (6,151)
                                                             -------     ------
                                                              34,068      6,873

Interest charges and preferred dividends of subsidiaries:
   Interest on long-term debt.........................        87,002     85,352
   Other interest.....................................        23,494     14,251
   Allowance for borrowed funds used during construction      (6,536)    (5,527)
   Dividends on PSCo and SPS obligated mandatorily
     redeemable preferred securities of subsidiary
     trusts holding solely  subordinated  debentures of
     PSCo and SPS.....................................        11,525     11,525
                                                              ------     ------
                                                             115,485    105,601

Income before income taxes and extraordinary item.....       285,985    208,684
Income taxes..........................................        86,076     58,149
                                                             -------     ------
Income before extraordinary item......................       199,909    150,535
Extraordinary item (Notes 1 and 4)....................       (13,658)         -
                                                             -------     ------
Net income............................................      $186,251   $150,535
                                                            ========   ========

Weighted average common shares outstanding:
   Basic..............................................       116,360    114,881
   Diluted............................................       116,398    114,916

Basic and diluted earnings per share of common stock
 outstanding:
   Income before extraordinary item...................       $  1.72     $ 1.31
   Extraordinary item (Notes 1 and 4).................         (0.12)         -
                                                             --------    ------
   Net income.........................................       $  1.60     $ 1.31
                                                             =======     ======


      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 CASH FLOWS
                                   (Unaudited)
                             (Thousands of Dollars)


                                                              Six Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................       $186,251  $150,535
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Extraordinary item (Notes 1 and 4)...............         13,658         -
     Depreciation and amortization....................        152,809   145,934
     Amortization of investment tax credits...........         (2,409)   (2,551)
     Deferred income taxes............................         21,564    15,003
     Equity in earnings of Yorkshire Power and other
      unconsolidated subsidiaries, net................       (32,640)   (13,024)
     Allowance for equity funds used during construction           -       (827)
     Change in accounts receivable....................         2,859      7,089
     Change in inventories............................        36,209     18,420
     Change in other current assets...................          (978)    82,069
     Change in accounts payable.......................       (29,875)   (15,928)
     Change in other current liabilities..............       (27,118)   (52,103)
     Change in deferred amounts.......................       (67,027)   (22,186)
     Change in noncurrent liabilities.................        (3,685)     2,124
     Other............................................          (967)        84
                                                             -------    -------
       Net cash provided by operating activities......       248,651    314,639

Investing activities:
   Construction expenditures..........................      (211,180)  (287,650)
   Allowance for equity funds used during construction             -        827
   Proceeds from disposition of property, plant
     and equipment....................................         2,747        512
   Purchase of other investments......................       (51,326)   (11,809)
   Sale of other investments..........................         7,498      2,402
                                                             -------    -------
       Net cash used in investing activities..........      (252,261)  (295,718)

Financing activities:
   Proceeds from sale of common stock.................        20,683     20,532
   Proceeds from sale of long-term debt...............       100,725    156,488
   Redemption of long-term debt.......................      (187,621)   (66,774)
   Short-term borrowings - net........................       157,723     19,702
   Dividends on common stock..........................      (135,554)  (133,379)
                                                            --------   --------

       Net cash used in financing activities..........       (44,044)    (3,431)
                                                             -------    -------
       Net (decrease) increase in cash and temporary
        cash investments..............................       (47,654)    15,490
       Cash and temporary cash investments at
         beginning of period..........................        83,763     56,667
                                                              ------     ------
       Cash and temporary cash investments at end of
         period.......................................      $ 36,109   $ 72,157
                                                            ========   ========



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

                                       5

<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
            CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY
                    Three Months Ended June 30, 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 March 31, 1999     114,924,982    $ 114,925     $1,769,762    $ 775,016     $ (2,856)   $2,656,847
Comprehensive income (Note 1):
  Net income................            -            -              -       49,235            -        49,235
  Foreign currency translation
   adjustment...............            -            -              -            -       (6,554)       (6,554)
                                                                                                       ------
      Comprehensive income                                                                             42,681

Dividends declared on common
 stock .....................            -            -              -      (66,855)           -       (66,855)
Issuance of common stock          317,286          317         11,511            -            -        11,828
                                  -------      -------        -------      -------      -------        ------


Balance at June 30, 1999 ...  115,242,268    $ 115,242     $1,781,273     $757,396     $ (9,410)   $2,644,501
                              ===========    =========     ==========     ========     ========    ==========


Balance at March 31, 2000     116,466,495    $ 116,466     $1,817,848     $857,225     $ (6,483)   $2,785,056
Comprehensive income (Note 1):
  Net income................            -            -              -       80,923            -        80,923
  Foreign currency translation
   adjustment...............            -            -              -            -      (18,396)      (18,396)
                                                                                                      -------
      Comprehensive income..                                                                           62,527

Dividends declared on common
 stock .....................            -            -              -      (67,728)           -       (67,728)
Issuance of common stock          288,639          289          9,404            -            -         9,693
                                  -------          ---          -----       ------      -------       -------

Balance at June 30, 2000      116,755,134    $ 116,755     $1,827,252     $870,420     $(24,879)   $2,789,548
                              ===========    =========     ==========     ========     ========    ==========
</TABLE>


Authorized shares of common stock were 260 million at June 30, 2000 and 1999.

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

                                       6
<PAGE>

                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
            CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY
                    Six Months Ended June 30, 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.................           -            -              -      150,535          -         150,535
  Foreign currency translation
   adjustment.................          -            -              -            -    (17,174)        (17,174)
                                                                                                      -------
      Comprehensive income                                                                            133,361

Dividends declared on common
 stock .......................          -            -              -     (133,816)         -        (133,816)
Issuance of common stock          751,496          751         29,378            -          -          30,129
                                  -------      -------        -------      -------    -------         -------


Balance at June 30, 1999 .....115,242,268   $  115,242     $1,781,273    $ 757,396    $(9,410)     $2,644,501
                              ===========   ==========     ==========    =========    =======      ==========





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................            -            -              -      186,251          -         186,251
  Foreign currency translation
   adjustment...............            -            -              -            -    (21,928)        (21,928)
                                                                                                     --------
      Comprehensive income                                                                            164,323

Dividends declared on common
 stock .....................            -            -              -     (135,384)         -        (135,384)
Issuance of common stock          917,935          918         27,001            -          -          27,919
                                  -------        -----        -------      -------    -------          ------

Balance at June 30, 2000      116,755,134   $  116,755     $1,827,252    $ 870,420   $(24,879)     $2,789,548
                              ===========   ==========     ==========    =========   ========      ==========
</TABLE>

Authorized shares of common stock were 260 million at June 30, 2000 and 1999.

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

                                       7


<PAGE>



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

                                     ASSETS

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Property, plant and equipment, at cost:
   Electric ..........................................   $4,779,154  $4,629,092
   Gas................................................    1,324,487   1,289,995
   Steam and other....................................       68,305      68,109
   Common to all departments..........................      478,245     458,940
   Construction in progress...........................      259,563     300,224
                                                           --------    --------
                                                          6,909,754   6,746,360
   Less: accumulated depreciation ....................    2,480,792   2,373,824
                                                          ---------   ---------
     Total property, plant and equipment..............    4,428,962   4,372,536
                                                          ---------   ---------

Investments, at cost:
   Note receivable from affiliate.....................      192,620     192,620
   Other..............................................       13,764      12,679
                                                           --------    --------
    Total investments.................................      206,384     205,299
                                                           --------    --------

Current assets:
   Cash and temporary cash investments................       15,095      51,731
   Accounts receivable, less reserve for uncollectible
     accounts ($3,733 at June 30, 2000; $2,533 at
     December 31, 1999) ..............................      150,967     199,304
   Accrued unbilled revenues .........................      172,196     220,330
   Recoverable purchased gas and electric energy costs       21,612      42,697
   Materials and supplies, at average cost............       54,058      53,984
   Fuel inventory, at average cost....................       27,689      27,326
   Gas in underground storage, at cost (LIFO).........       28,265      62,487
   Current portion of deferred income taxes...........        4,869       3,532
   Prepaid expenses and other.........................       27,548      42,760
                                                           --------    --------
    Total current assets..............................      502,299     704,151
                                                           --------    --------

Deferred charges:
   Regulatory assets (Note 1).........................      224,942     236,251
   Unamortized debt expense ..........................       18,179      18,892
   Other..............................................       58,901      51,813
                                                           --------    --------
    Total deferred charges............................      302,022     306,956
                                                           --------    --------
                                                         $5,439,667  $5,588,942



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

                                       8
<PAGE>


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

                             CAPITAL AND LIABILITIES

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Common stock..........................................   $1,414,835  $1,414,835
Retained earnings.....................................      428,039     346,050
                                                           --------     -------
    Total common equity...............................    1,842,874   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........................................    1,681,527   1,721,959
                                                          ---------   ---------
                                                          3,718,401   3,676,844
Noncurrent liabilities:
  Employees' postretirement benefits other than pensions     46,974      51,080
  Employees' postemployment benefits.................        26,229      26,229
                                                           --------     -------
    Total noncurrent liabilities......................       73,203      77,309
                                                           --------     -------

Current liabilities:
   Notes payable and commercial paper.................      295,300     356,192
   Long-term debt due within one year.................      171,988     132,823
   Accounts payable...................................      233,752     336,891
   Dividends payable..................................            -      44,575
   Recovered electric energy costs....................       15,481      11,873
   Customers' deposits................................       24,984      24,370
   Accrued taxes......................................       54,499      67,030
   Accrued interest...................................       42,074      44,034
   Other..............................................       81,814      91,067
                                                           --------     -------
    Total current liabilities.........................      919,892   1,108,855
                                                           --------   ---------

Deferred credits:
   Customers' advances for construction...............       63,280      54,826
   Unamortized investment tax credits ................       87,039      89,286
   Accumulated deferred income taxes..................      557,850     555,829
   Other..............................................       20,002      25,993
                                                           --------     -------
    Total deferred credits............................      728,171     725,934
                                                           --------     -------

Commitments and contingencies (Notes 4 and 5).........   ----------  ----------
                                                         $5,439,667  $5,588,942
                                                         ==========  ==========



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

                                       9


<PAGE>


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


                                                             Three Months Ended
                                                                  June 30,
                                                                2000     1999

Operating revenues:
   Electric...........................................       $449,230  $373,690
   Gas................................................        138,861   140,895
   Other..............................................          1,988     1,580
                                                              -------   -------
                                                              590,079   516,165
Operating expenses:
   Fuel used in generation............................         69,907    54,882
   Purchased power....................................        143,459   111,963
   Gas purchased for resale...........................         84,642    87,721
   Other operating and maintenance expenses...........         93,318   102,037
   Depreciation and amortization......................         51,886    48,822
   Taxes (other than income taxes) ...................         20,462    23,595
   Income taxes  .....................................         29,656    14,768
                                                              -------   -------
                                                              493,330   443,788
Operating income......................................         96,749    72,377

Other income and deductions-net.......................          4,307       831

Interest charges:
   Interest on long-term debt.........................         32,798    29,908
   Other interest.....................................          6,104     6,741
   Allowance for borrowed funds used during construction       (2,567)   (2,061)
   Dividends on PSCo obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of PSCo ..........          3,800     3,800
                                                              -------     -----
                                                               40,135    38,388
                                                               ------    ------

Net income............................................        $60,921  $34,820
                                                              =======  =======




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

                                       10


<PAGE>


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


                                                              Six Months Ended
                                                                  June 30,
                                                                2000     1999
                                                                ----     ----

Operating revenues:
   Electric...........................................      $ 855,325 $ 755,012
   Gas................................................        409,582   395,066
   Other..............................................          5,722     4,957
                                                              -------   -------
                                                            1,270,629 1,155,035
Operating expenses:
   Fuel used in generation............................        126,109   106,747
   Purchased power....................................        276,615   226,190
   Gas purchased for resale...........................        260,991   260,562
   Other operating and maintenance expenses...........        190,984   196,548
   Depreciation and amortization......................        102,250    97,362
   Taxes (other than income taxes) ...................         41,808    47,082
   Income taxes  .....................................         65,453    43,982
                                                              -------   -------
                                                            1,064,210   978,473
                                                            ---------   -------
Operating income......................................        206,419   176,562

Other income and deductions-net.......................          3,869      (735)

Interest charges:
   Interest on long-term debt.........................         65,320    59,791
   Other interest.....................................         12,250    11,961
   Allowance for borrowed funds used during construction       (4,562)   (4,284)
   Dividends on PSCo obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of PSCo ..........          7,600     7,600
                                                                -----     -----

                                                               80,608    75,068

Net income............................................      $ 129,680 $ 100,759
                                                            ========= =========




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

                                       11


<PAGE>



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


                                                              Six Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................       $129,680  $100,759
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................        105,373   100,369
     Amortization of investment tax credits...........         (2,247)   (2,388)
     Deferred income taxes............................          7,238     4,735
     Change in accounts receivable....................         48,337    17,210
     Change in inventories............................         33,785    18,729
     Change in other current assets...................         84,431   102,519
     Change in accounts payable.......................       (103,139)  (30,778)
     Change in other current liabilities..............        (19,522)  (28,353)
     Change in deferred amounts.......................         (8,653)   (6,977)
     Change in noncurrent liabilities.................         (4,106)      974
                                                              -------   -------
       Net cash provided by operating activities......        271,177   276,799

Investing activities:
   Construction expenditures..........................       (155,516) (215,940)
   Proceeds from disposition of property, plant
     and equipment ...................................          3,446    12,467
   Purchase of other investments......................         (5,773)   (2,481)
   Sale of other investments..........................          5,073     2,361
                                                              -------   -------
       Net cash used in investing activities..........       (152,770) (203,593)

Financing activities:
   Proceeds from the sale of long-term debt...........         99,750    47,666
   Redemption of long-term debt.......................       (101,636)  (66,482)
   Short-term borrowings - net........................        (60,892)   57,230
   Dividends on common stock..........................        (92,265)  (92,976)
                                                              -------   -------
       Net cash used in financing activities..........       (155,043)  (54,562)
                                                             --------   -------
       Net (decrease) increase in cash and temporary
        cash investments .............................        (36,636)   18,644
       Cash and temporary cash investments at
        beginning of period ..........................         51,731    19,926
                                                               ------    ------

       Cash and temporary cash investments at
        end of period ................................       $ 15,095  $ 38,570
                                                             ========  ========


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

                                       12


<PAGE>


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

                                     ASSETS

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Property, plant and equipment, at cost:
   Electric...........................................   $2,848,861  $2,802,077
   Construction in progress...........................       95,562      95,477
                                                            -------     -------
                                                          2,944,423   2,897,554
   Less: accumulated depreciation.....................    1,160,806   1,123,739
                                                          ---------   ---------

    Total property, plant and equipment...............    1,783,617   1,773,815
                                                          ---------   ---------


Investments, at cost:
   Notes receivable from affiliate....................      119,036     119,036
   Other..............................................        6,012       5,946
                                                            -------     -------
    Total investments.................................      125,048     124,982
                                                            -------     -------

Current assets:
   Cash and temporary cash investments................        9,671       1,532
   Accounts receivable, less reserve for uncollectible
    accounts ($333 at June 30, 2000; $682 at
    December 31, 1999)................................       62,283      83,928
   Accrued unbilled revenues..........................       81,048      44,631
   Recoverable electric energy cost (Note 4)..........       34,901       1,948
   Materials and supplies, at average cost............       16,027      18,035
   Fuel inventory, at average cost....................        2,290       2,292
   Prepaid expenses and other.........................       21,991       4,324
                                                            -------     -------
    Total current assets..............................      228,211     156,690
                                                            -------     -------

Deferred charges:
   Regulatory assets (Note 1).........................       70,759     101,419
   Prepaid pension asset..............................       50,763      40,087
   Unamortized debt expense...........................        9,488       9,605
   Other..............................................       12,211      12,778
                                                            -------     -------
    Total deferred charges............................      143,221     163,889
                                                            -------     -------
                                                         $2,280,097  $2,219,376
                                                         ==========  ==========



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

                                       13

<PAGE>


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

                             CAPITAL AND LIABILITIES

                                                          June 30,  December 31,
                                                            2000        1999
                                                            ----        ----

Common stock..........................................    $353,099  $  353,099
Retained earnings.....................................     421,854     408,284
                                                           -------     -------
    Total common equity...............................     774,953     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 (Notes 1 and 4)........................     520,590     605,875
                                                           -------     -------
                                                         1,395,543   1,467,258

Noncurrent liabilities:
   Employees' postretirement benefits other than pensions    6,504       6,086
   Employees' postemployment benefits.................       4,683       4,940
                                                           -------     -------
    Total noncurrent liabilities......................      11,187      11,026
                                                           -------     -------

Current liabilities:
   Notes payable and commercial paper.................     311,350     177,746
   Accounts payable...................................      98,554      76,560
   Dividends payable..................................           -      20,963
   Customers' deposits................................       5,642       5,833
   Accrued taxes......................................      17,893      23,486
   Accrued interest...................................      14,685      17,223
   Current portion of accumulated deferred income taxes      6,327           -
   Other..............................................      41,764      26,857
                                                           -------     -------
    Total current liabilities.........................     496,215     348,668
                                                           -------     -------

Deferred credits:
   Unamortized investment tax credits.................       4,844       4,969
   Accumulated deferred income taxes..................     366,087     376,245
   Other..............................................       6,221      11,210
                                                           -------     -------
    Total deferred credits............................     377,152     392,424
                                                           -------     -------

Commitments and contingencies (Notes 4 and 5).........  ----------  ----------
                                                        $2,280,097  $2,219,376
                                                        ==========  ==========





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

                                       14


<PAGE>


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


                                                             Three Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating revenues....................................       $256,643  $224,114

Operating expenses:
   Fuel used in generation............................         97,894    97,975
   Purchased power....................................         28,579    11,404
   Other operating and maintenance expenses...........         40,989    33,858
   Depreciation and amortization......................         19,365    18,435
   Taxes (other than income taxes)....................         11,774    12,487
   Income taxes.......................................         16,516    13,483
                                                              -------   -------
                                                              215,117   187,642
Operating income......................................         41,526    36,472

Other income and deductions - net.....................          2,826     2,380

Interest charges:
   Interest on long-term debt.........................         10,159    13,639
   Other interest.....................................          4,504       960
   Allowance for borrowed funds used during construction         (919)     (544)
   Dividends on SPS obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of SPS ...........          1,962     1,962
                                                                -----     -----
                                                               15,706    16,017

Income before extraordinary item......................         28,646    22,835

Extraordinary item (Notes 1 and 4)....................        (13,658)        -
                                                              -------   -------

Net income............................................        $14,988   $22,835
                                                              =======   =======


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

                                       15


<PAGE>



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


                                                              Six Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating revenues....................................       $472,875  $426,666

Operating expenses:
   Fuel used in generation............................        184,587   180,028
   Purchased power....................................         49,740    16,509
   Other operating and maintenance expenses...........         76,850    67,662
   Depreciation and amortization......................         38,719    36,907
   Taxes (other than income taxes)....................         23,856    25,871
   Income taxes.......................................         27,446    27,848
                                                              -------   -------
                                                              401,198   354,825
Operating income......................................         71,677    71,841

Other income and deductions - net.....................          6,236     4,460

Interest charges:
   Interest on long-term debt.........................         20,816    24,834
   Other interest.....................................          8,235     2,549
   Allowance for borrowed funds used during construction       (1,965)   (1,233)
   Dividends on SPS obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of SPS                      3,925     3,925
                                                                -----     -----
                                                               31,011    30,075

Income before extraordinary items.....................         46,902    46,226

Extraordinary item (Notes 1 and  4)...................        (13,658)        -
                                                              -------   -------

Net income............................................        $33,244   $46,226
                                                              =======   =======


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

                                       16


<PAGE>


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


                                                              Six Months Ended
                                                                  June 30,
                                                               2000      1999
                                                               ----      ----

Operating activities:
   Net income.........................................       $ 33,244  $ 46,226
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Extraordinary item (Notes 1 and 4)...............         13,658         -
     Depreciation and amortization....................         40,483    38,713
     Amortization of investment tax credits...........           (125)     (125)
     Deferred income taxes............................         13,535     6,102
     Change in accounts receivable....................         21,645     1,877
     Change in inventories............................          2,010      (573)
     Change in other current assets...................        (83,897)  (22,026)
     Change in accounts payable.......................         21,994    12,968
     Change in other current liabilities..............          6,585   (24,566)
     Change in deferred amounts.......................        (19,131)  (14,291)
     Change in noncurrent liabilities.................            161     1,001
                                                              -------   -------
       Net cash provided by operating activities......         50,162    45,306

Investing activities:
   Construction expenditures..........................        (47,647)  (61,840)
   Cost of disposition of property, plant and equipment        (1,927)   (2,162)
   Purchase and sale of other investments.............            (66)     (109)
                                                              -------   -------
       Net cash used in investing activities..........        (49,640)  (64,111)

Financing activities:
   Proceeds from sale of long-term debt...............              -    99,846
   Redemption of long-term debt.......................        (85,350)        -
   Short-term borrowings - net........................        133,604   (35,465)
   Dividends on common stock..........................        (40,637)  (40,031)
                                                              -------   -------
       Net cash provided by financing activities......          7,617    24,350
                                                              -------   -------
       Net increase in cash and temporary
        cash investments .............................          8,139     5,545
       Cash and temporary cash investments at beginning
         of period ...................................          1,532     1,350
                                                                -----     -----
       Cash and temporary cash investments at end
         of period ...................................       $  9,671   $ 6,895
                                                             ========   =======



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

                                       17



<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 (see Note 4. Regulatory Matters for further discussion).

      Regulatory Assets and Liabilities

      The Company's regulated  subsidiaries,  except as discussed below for SPS,
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 June 30, 2000,  the  requirements  to apply
SFAS 71 continue to be met by all utility operations, except for SPS' generation
operations.

      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  subsidiary  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 flow.

      With the  issuance of a final  written  order by the PUCT  addressing  the
implementation of electric utility  restructuring for SPS,  management  believes
that  sufficient  details of a transition plan to competition now exist allowing
for a  reasonable  determination  of the  impacts  of the  deregulation  of SPS'
generation  business.  Accordingly,  SPS discontinued the application of SFAS 71
for the  generation  portion of its business  during the second quarter of 2000.
SPS applied the provisions of SFAS No. 101, "Regulated  Enterprises - Accounting
for the Discontinuation of SFAS 71" and Emerging Issues Task Force Consensus No.
97-4,  "Deregulation  of the  Pricing  of  Electricity  - Issues  Related to the
Application  of FASB  Statements  No.  71 and 101" to SPS'  electric  generation
business.  While the PUCT rate order only addresses Texas operations,  SPS plans
to pursue a similar strategy to implement the restructuring  legislation enacted
in New  Mexico  and  believes  that all of its  generation  will  ultimately  be
deregulated.  Accordingly,  SPS has applied SFAS 101 to all jurisdictions of its
generation  business.  SPS' transmission and distribution  business continues to
meet the  requirements  of SFAS 71,  as that  business  is  expected  to  remain
regulated.  During the second  quarter of 2000,  SPS  wrote-off  its  generation
related  regulatory  assets and other deferred costs totaling  approximately $19
million.  This resulted in an after-tax  extraordinary  charge of  approximately
$13.7  million  against  the  earnings  of SPS and NCE.  The  total  impacts  of
deregulation

                                       18

<PAGE>


       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

may  be  affected  by  the  results  of  future  state  and  Federal  regulatory
proceedings  prior  to  actual  implementation  of full  competition,  currently
anticipated  to begin on January  1, 2002 (see Note 4.  Regulatory  Matters  for
further discussion).

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

June 30, 2000                           NCE         PSCo           SPS
                                      -------      -------        ------

Income taxes........................  $ 98,291      $52,457      $ 46,452
Nuclear decommissioning costs.......    58,906       58,906             -
Employees' postretirement benefits
  other than pensions...............    48,775       48,625           150
Employees' postemployment benefits..    23,297       23,018             -
Demand-side management costs........    36,557       22,840        13,717
Unamortized debt reacquisition costs    24,014       13,237        10,252
Other...............................     6,047        5,859           188
                                      --------      -------      --------
  Total.............................  $295,887     $224,942      $ 70,759
                                      ========     ========      ========

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 June  30,  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  $125  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. 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.  PSCo appealed the District  Court decision to
the Colorado  Supreme Court on January 31, 2000,  and filed its opening brief on
June 23, 2000. The Company  expects a final decision on this matter in late 2000
or early 2001.  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.

                                       19
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED 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 and six month  periods  ended June 30, 2000,
NCE recognized a net gain of $2,223,000 and $1,948,000,  respectively,  and PSCo
recognized a net gain of $1,083,000 and $959,000, respectively, for market value
changes on energy trading  contracts.  For the three and six month periods ended
June 30, 1999,  NCE recognized net  gains/(losses)  of $688,000 and  ($551,000),
respectively,   and  PSCo   recognized   net  gains  of  $261,000  and  $78,000,
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.

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 and six month periods
ended June 30, 2000 and 1999.  Other  comprehensive  income  consists  solely of
foreign currency translation  adjustments related to the investment in Yorkshire
Power.

      For the three and six month  periods  ending June 30, 2000 and 1999,  PSCo
and SPS had no  comprehensive  income  items,  therefore,  comprehensive  income
equals net income.

                                       20
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED 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  38,000 shares for both the three and six
month  periods  ended June 30,  2000 and were  23,000 and 35,000  shares for the
three and six month periods ended June 30, 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 June 30, 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
$10 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 June 30, 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

                                       21
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

stock-for-stock  exchange for shareholders of both companies and to be accounted
for as a pooling-of-interests.

      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").

      The required  applications or submissions to the state utility  regulators
and the FERC were  completed in July 1999. In general,  the filings to the state
regulators proposed the sharing of cost savings among customers and shareholders
for up to five years.  All state  regulatory  approvals have been  received.  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.  Final  approvals by the SEC are pending.  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 during the third quarter of 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 June 30, 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   $33  million  each
respectively,  of deferred nonrecurring merger costs as of June 30, 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 pro forma
balance  sheet  information  has been  adjusted  to reflect a  write-off  of the
deferred costs and a related reduction of retained earnings.

                                       22
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

      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 June 30, 2000 (in
millions):

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

Property, plant &
 equipment- net            $ 4,468     $6,330      $3,904      $14,702
Current assets..........     1,286        937           -        2,223
Other assets............     6,172      1,101      (3,970)       3,303
                           -------     ------      ------      -------
  Total assets..........   $11,926     $8,368      $  (66)     $20,228
                           =======     ======      ======      =======

Common equity...........   $ 2,761     $2,789      $  (66)     $ 5,484
Preferred securities....       305        294           -          599
Long-term debt..........     4,839      2,249           -        7,088
                            ------     ------      ------      ------
  Total capitalization..     7,905      5,332         (66)      13,171
Current liabilities.....     1,953      1,791           -        3,744
Other liabilities.......     2,068      1,245           -        3,313
                            ------     ------      ------       ------
  Total equity and
    liabilities            $11,926     $8,368      $  (66)     $20,228
                           =======     ======      ======      =======

      The  unaudited  pro  forma  balance  sheet  information  at June 30,  2000
reflects  reporting  adjustments to conform the  presentation  of  non-regulated
property (in property, plant and equipment).

Unaudited  Summarized Pro Forma Income Statement  information for the six months
ended June 30, 2000 and 1999 (in millions, except per share data):

                             NSP         NCE     Adjustments  Pro Forma
                             ---         ---     -----------  ---------
   2000
Revenues................   $1,472      $1,816      $  921      $4,209
Operating income........      157         367         276         800
Net income*.............      110         186           -         296
Earnings available for
 common* ...............      108         186           -         294
Basic & diluted earnings
     per share*.........    $0.69       $1.60           -       $0.87

   1999
Revenues................   $1,402      $1,716      $  167      $3,285
Operating income........      154         307          56         517
Net income..............       63         151           -         214
Earnings available for
 common ................       60         151           -         211
Basic & diluted earnings
     per share..........    $0.40       $1.31           -       $0.64

      *During the second quarter 2000,  SPS, a subsidiary of NCE,  recognized an
extraordinary  charge of $13.7  million,  net of tax  ($0.12  per share for NCE;
$0.04 per share for pro  forma),  related  to the  discontinued  application  of
regulatory  accounting under SFAS 71 for the generation  portion of its business
(see Note 1. Summary of Significant  Accounting  Policies and Note 4. Regulatory
Matters).

      The unaudited pro forma income  statement  information  for the six months
ended June 30,  2000 and 1999  reflect  reporting  adjustments  to  conform  the
presentation  of nonregulated  revenues and earnings from equity  investments in
operating revenues.

                                       23
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED 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 six months ended June 30,
2000 and 1999, respectively, is presented below (in millions):
                                                      2000         1999
                                                      ----         ----

    Yorkshire Power:
      Operating revenues.......................    $1,171.1      $1,156.7
                                                   --------      --------

      Operating income.........................       186.1         152.0
                                                   --------         -----

      Net income...............................    $   64.0      $   30.2
                                                   ========      ========

    NCI's equity in earnings of Yorkshire Power    $   32.0      $   15.1
                                                   ========      ========

      Yorkshire Power changed its accounting for depreciation, effective January
1, 2000. NCI's equity in earnings for the six months ended June 30, 2000 include
approximately $6.5 million (after-tax) related to this change.  Also, lower than
expected electric energy supply costs contributed  positively to the increase in
Yorkshire Power's earnings.

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  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.

                                       24
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

Additionally,  earnings during the latter half of 2000, as compared to the first
half of 2000,  are  expected  to be lower due to an  increase  in gas prices and
competition with higher marketing and other customer related costs.

4. Regulatory Matters (NCE, PSCo and SPS)

Electric Utility Matters

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 made and continues to make filings with the PUCT and
the NMPRC, as required by each state's  legislation,  to address critical issues
related to SPS' transition plans to retail competition.  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
legislative and regulatory  requirements in developing its transition  plans. It
is 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 filings.  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 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.  On May 16,  2000,  the NMPRC  approved:  1) a one-year  delay of customer
choice for residential, small commercial and educational customers to January 1,
2002, 2) a six-month  delay in customer  choice for  commercial  and  industrial
customers  to July 1,  2002,  3) a  seven  month  delay  for  completion  of SPS
corporate  separation by August 1, 2001 and 4) a utility  transition plan filing
date of June 1, 2000.

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.

                                       25
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

      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

      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 undue 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, 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 has arranged
interim  financing,  as approved by the NMPRC, to enable SPS to make open market
purchases,  and to complete a tender  offer and the 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 by
January 1, 2001  (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 to the NCE/NSP Merger docket, 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  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
prohibit the  pooling-of-interest  accounting for the Merger,  the  divestitures
would be delayed.

      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.  On May  30,  2000,  the  PUCT  issued  a  rate  order  approving  the

                                       26
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       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

Stipulation.  SPS has committed,  contingent 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 in Texas,  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.

      On June 1, 2000, SPS filed its transition plan with the NMPRC. The Company
filed to establish rates for the transmission  and distribution  business in New
Mexico, requesting approval of its corporate  restructuring/separation and other
associated matters. Hearings are anticipated to be held in the fourth quarter of
2000.

      On July 24, 2000,  SPS  commenced a fixed spread  tender offer to purchase
for cash the remaining  $294.9 million total principal  amount of five series of
SPS' First Mortgage Bonds.  Under the terms of the offer,  SPS will purchase the
remaining  bonds of each series at a price  [determined by the yield to maturity
for bonds that are not  redeemable  and to the first  redemption  date for bonds
that are  redeemable],  at the time of tender,  equal to the sum of the yield on
the applicable  referenced U.S. Treasury Note plus a fixed spread.  The purchase
offer expired on August 4, 2000 with  approximately 92% of the outstanding bonds
purchased.  SPS  currently  intends  that all bonds  which are not  tendered  or
otherwise  acquired  by SPS  (approximately  8% of the total  outstanding  First
Mortgage  Bonds) will be defeased by the end of 2000. The bonds will be defeased
by deposting with the trustee cash sufficient to pay the principal amount of the
outstanding  First Mortgage Bonds at maturity or the first  redemption date, the
applicable  redemption  date,  the  applicable  redemption  premium at the first
redemption date and accrued  interest to maturity or the first  redemption date.
Upon  defeasance,  all  obligations  of SPS  under its  Indenture  and the First
Mortgage Bonds would be discharged.

Financial Reporting Matters

      With the  issuance  of a final  written  order by the PUCT on May 30, 2000
addressing  the  implementation  of  electric  utility  restructuring  for  SPS,
management  believes that sufficient details of a transition plan to competition
now  exist  allowing  for a  reasonable  determination  of  the  impacts  of the
deregulation of SPS' generation  business.  Accordingly,  SPS  discontinued  the
application  of SFAS 71 for that  portion  of its  business  during  the  second
quarter  of  2000.  SPS  applied  the  provisions  of SFAS No.  101,  "Regulated
Enterprises - Accounting for the Discontinuation of SFAS 71" and Emerging Issues
Task Force  Consensus No. 97-4,  "Deregulation  of the Pricing of  Electricity -
Issues Related to the  Application  of FASB  Statements No. 71 and 101" for SPS'
electric  generation  business.  While the above rate order only addresses Texas
operations,   SPS  plans  to  pursue  a  similar   strategy  to  implement   the
restructuring  legislation  enacted in New Mexico and  believes  that all of its
generation will ultimately be deregulated. Accordingly, SPS has applied SFAS 101
to  all  jurisdictions  of  its  generation  business.   SPS'  transmission  and
distribution  business  continues to meet the  requirements  of SFAS 71, as that
business  remains  regulated.  During the second quarter 2000, SPS wrote-off its
generation   related   regulatory  assets  and  other  deferred  costs  totaling
approximately $19 million. This resulted in an after-tax extraordinary charge of
approximately  $13.7  million  against the  earnings  of SPS and NCE.  The total
impacts of  deregulation  may be  affected  by the  results of future  state and
Federal   regulatory   proceedings  prior  to  actual   implementation  of  full
competition, estimated to begin on January 1, 2002.

      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 $75 million.

                                       27
<PAGE>

      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.

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:

  -   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;
  -   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
  -   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 six months 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.  The $15 million refund obligations for 1997 were finalized
and refunded to customers. PSCo has recorded customer refund obligations for its
earnings  test of  approximately  $11 million for 1998 and $16 million for 1999.
During the six months  ended  June 30,  2000,  PSCo has  recorded  an  estimated
customer refund obligation of approximately $6 million (excluding adjustments to
true-up prior year estimates). In June 2000, an Administrative Law Judge ("ALJ")
issued a  Recommended  Decision  on the  unresolved  issues  related to the 1998
earnings  test.  PSCo filed its brief on  exceptions  with the CPUC,  asking the
Commission  to disregard  the ALJ's  Recommended  Decision and to issue an order
adopting the  Company's  position.  Final CPUC  decisions  related to the refund
obligations for 1998 and 1999 are pending.

      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.  During the
second quarter of 2000, the CPUC staff reviewed the report for the calendar year
1999 and  calculated a refund  amount of  approximately  $4.8  million.  A final
decision on the 1999 refund amount 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 this  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  fuel and
purchased  power costs,  the  efficiency  of the use of such fuel and  purchased
power, fuel acquisition and management  policies and purchase

                                       28
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

power  commitments.  SPS is  required  to file an  application  for the  PUCT 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 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.  In
July 2000, the PUCT approved a settlement  agreement between SPS and the General
Counsel of the PUCT, which provided for the recovery of  substantially  all fuel
costs, including  approximately $12.1 million of the Texas retail jurisdictional
portion of the Thunder Basin judgment.

      On June 30, 2000, SPS filed an application for the PUCT to retrospectively
review the operations of a utility's electricity  generation and fuel management
activities. In this application, SPS filed its reconciliation for the generation
and fuel management  activities  totaling  approximately  $419 million,  for the
period from January 1998 through December 1999. Final approval is pending.

      SPS filed an emergency  application on July 21, 2000,  seeking to increase
its fixed fuel factor, to be effective  September 1, 2000. SPS was approximately
$18  million  under-recovered  in fuel costs  associated  with the Texas  retail
jurisdiction  through  May 2000 as a result of recent  increases  in natural gas
costs. SPS has committed to file an additional  application seeking to surcharge
its Texas  retail  customers  the  under-recovered  amount above  including  any
related interest.

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.

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.

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 have been received in all
required states,  including 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:

  -   PSCo will reduce its retail electric rates by $11 million annually for the
      two-year period from July 1, 2000 through June 30, 2002;

                                       29
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

  -   PSCo will file a  combined  electric  and gas rate case in early 2002 with
      new rates anticipated to be effective January 1, 2003;
  -   merger costs will be capped at $30 million and  amortized  for  ratemaking
      purposes over the period July 1, 2000 to December 31, 2003;
  -   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 (effective July 1,
      2000)  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 cost  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.

The PUCT issued the final order approving the NCE/NSP Merger on May 30, 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:

  -  guaranteed   merger  savings   credits  of  $65,000  per  month   (totaling
     approximately $3.5 million)
  -  an equal  sharing of the net non-fuel  operating  and  maintenance  savings
     among retail customers and shareholders;
  -  a 50% recovery of merger-related transaction and transition costs;
  -  retention  of the current fuel cost  recovery  mechanism to pass along fuel
     cost savings to retail customers.
  -  SPS will not pass to  customers  any  negative  rate impacts of the NCE/NSP
     Merger.

      The NMPRC  issued the final  order on May 9, 2000  approving  the  NCE/NSP
Merger.

Gas Utility Matters

PSCo Rate Cases

      On July 17, 2000,  PSCo filed a retail rate case with the CPUC  requesting
an  annual   increase  in  its   jurisdictional   gas  department   revenues  of
approximately $40 million. The request for a rate increase reflects revenues for
additional plant investment,  a 12.5% return on equity, new depreciation  rates,
and recovery of the  dismantlement  costs associated with the Leyden Gas Storage
facility, as discussed below. Hearings have not yet been scheduled.

      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. On June
8, 1999,  the CPUC  approved  an  increase  in

                                       30
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

base  rates of  approximately  $15  million  with an 11.25%  return  on  equity,
effective  July 1, 1999.  PSCo was also allowed  recovery of prudently  incurred
year 2000 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.  PSCo filed opening briefs
with the Colorado  Supreme Court on June 23, 2000. 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.  In  June  2000,  an ALJ
determined that the notice was adequate and the application was proper. Hearings
and testimony  are  scheduled for the third quarter of 2000.  PSCo has requested
recovery of these costs and its remaining  plant  investments in the retail rate
case filed in July 2000.

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 related to this matter.

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 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

                                       31
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

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  associated  with
certain COLI policies,  however,  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

                                       32
<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

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 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  energy 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.

                                       33

<PAGE>

       NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

      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
June 30, 2000           Utility    Utility    International   Other     Amounts         Total
                        -------    -------    -------------   -----     -------         -----
<S>                     <C>        <C>          <C>          <C>        <C>           <C>
Revenues:
 External customers     $715,104   $140,199     $      -     $21,549    $     -       $ 876,852
 Intersegment                122      3,117            -      31,247          -          34,486
Segment profit            64,399        844        5,829      13,621     (3,770)         80,923

June 30, 1999
Revenues:
 External customers     $607,438   $144,131     $      -     $49,265    $     -       $ 800,834
 Intersegment                107      1,699            -      33,352          -          35,158
Segment profit            53,823       (362)         (65)     (1,221)    (2,940)         49,235

Six months ended:       Electric      Gas                       All    Unallocated   Consolidated
June 30, 2000           Utility     Utility    International   Other     Amounts        Total
                        -------     -------    -------------   -----     -------        -----
Revenues:
 External customers  $1,348,226    $415,356     $      -     $51,940    $     -      $1,815,522
 Intersegment               178       5,887            -      43,713          -          49,778
Segment profit          120,369      25,167       27,913      20,591     (7,789)        186,251

June 30, 1999
Revenues:
 External customers  $1,201,584    $403,514     $      -     $110,431   $      -     $1,715,529
 Intersegment               262       3,658            -       49,994          -         53,914
Segment profit          118,128      17,103       18,075        3,378     (6,149)       150,535
</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):
<TABLE>
<CAPTION>
                                                          Eliminations/
Three months ended:     Electric     Gas         All      Unallocated    Consolidated
June 30, 2000           Utility    Utility      Other       Amounts         Total
                        -------    -------      -----       -------         -----
<S>                    <C>         <C>          <C>          <C>          <C>
Revenues from
 external customers    $ 449,230    $138,861    $ 1,988      $    -       $590,079
Segment profit            52,316         783      7,822           -         60,921

June 30, 1999
Revenues from
 external customers    $ 373,690    $140,895    $ 1,580      $    -       $516,165
Segment profit            31,439        (441)     3,822           -         34,820
</TABLE>

                                       34
<PAGE>


<TABLE>
<CAPTION>
Six months ended:       Electric     Gas         All      Unallocated    Consolidated
June 30, 2000           Utility    Utility      Other       Amounts         Total
                        -------    -------      -----       -------         -----
<S>                    <C>         <C>          <C>        <C>           <C>
Revenues from
 external customers    $855,325    $409,582     $ 5,722    $     -       $1,270,629
Segment profit           92,786      24,858      12,036          -          129,680

June 30, 1999
Revenues from
 external customers    $755,012    $395,066     $ 4,957    $     -       $1,155,035
Segment profit           73,391      16,781      10,587          -          100,759
</TABLE>

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 $256.6 million
and  $224.1  million  for the  three  months  ended  June  30,  2000  and  1999,
respectively.  Revenues from external customers for this reportable segment were
$472.9  million and $426.7  million  for the six months  ended June 30, 2000 and
1999, respectively.

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 June 30,  2000 and  December  31,  1999 and the results of
operations  for the three and six months  ended June 30,  2000 and 1999 and cash
flows  for  the  six  months  ended  June  30,  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
1999 combined Annual Report on Form 10-K for NCE, PSCo and SPS.

      Because of seasonal and other  factors,  the results of operations for the
six months ended June 30, 2000 should not be taken as an  indication of earnings
for all or part of the balance of the year.


                                       35

<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 June 30,
2000,  and  the  related  consolidated   condensed  statements  of  income,  and
shareholders' equity for the three and six month periods ended June 30, 2000 and
1999, and the consolidated  condensed statements of cash flows for the six month
periods  ended  June 30,  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,
August 4, 2000.


                                       36
<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 June
30, 2000, and the related  consolidated  condensed  statements of income for the
three and six month periods ended June 30, 2000 and 1999,  and the  consolidated
condensed statements of cash flows for the six month periods ended June 30, 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,
August 4, 2000.


                                       37

<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 June 30, 2000, and the related
condensed  statements  of income for the three and six month  periods ended June
30, 2000 and 1999, and the condensed  statements of cash flows for the six month
periods  ended  June 30,  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,
August 4, 2000.




                                       38
<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 June 30, 2000  Compared to the Three  Months Ended June 30,
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.  All required  State and
Federal  regulatory  agency  authorizations  have been received,  except for the
approval by the SEC and Federal  Communication  Commission.  The Company expects
that the SEC will make its ruling on the NCE/NSP  Merger in the third quarter of
2000 and it is expected the NCE/NSP Merger will be completed during August 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  3.1 million  electricity
customers and 1.6 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 $0.69 ($0.81 per share before
the extraordinary  item) for the second quarter of 2000 as compared to $0.43 per
share  (basic and  diluted)  for the second  quarter of 1999.  The  increase  is
primarily  attributable  to higher  wholesale  electric  marketing  and  trading
activities  as the Company  successfully  marketed  excess  system  power in the
western  U.S. at prices  substantially  higher than normal.  Continued  customer
growth in Colorado and the on-going cost containment efforts also contributed to
the higher earnings in 2000.  Equity in earnings of Yorkshire Power increased as
a result of lower than expected electricity supply prices in the United Kingdom.
However,  Yorkshire  Power's  future  contribution  to  earnings  is expected to
decline  due to the  distribution  and  supply  price  reductions  which  became
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.  During the second quarter of
2000, SPS  discontinued  the application of regulatory  accounting under SFAS 71
for the  generation  portion of its  business,  and  recognized a $13.7  million
extraordinary  charge, net of tax. The charge was recorded following a PUCT rate
order addressing the  implementation of electric utility  restructuring for SPS.
See Note 1. Summary of Significant  Accounting  Policies and Note 4.  Regulatory
Matters in Item 1. FINANCIAL STATEMENTS.

Electric Operations

      The following table details the change in electric  operating revenues and
energy  costs for the second  quarter of 2000 as  compared to the same period in
1999 (in thousands).
                                                           Increase
                                                           --------
Electric operating revenues:
Retail................................................     $45,689
Wholesale.............................................      30,780
Other (including unbilled revenues)...................      31,358
                                                           -------
  Total revenues......................................     107,827
Fuel used in generation...............................      14,944
Purchased power.......................................      49,135
                                                           -------
  Net increase in electric margin.....................     $43,748
                                                           =======


                                       39
<PAGE>


      The following table compares  electric sales by major customer classes for
the second quarter of 2000 and 1999.
                                              Millions of Kwh Sales
                                                 2000      1999     % Change *
                                                 ----      ----     ----------
Residential................................     2,359     2,244        5.1%
Commercial and industrial..................     6,968     6,676        4.4
Public authority...........................       198       203       (2.3)
                                                -----     -----
  Total retail.............................     9,525     9,123        4.4
Wholesale..................................     4,041     3,030       33.3
                                                -----     -----
Total......................................     13,566    12,153      11.6
                                                ======    ======

Power marketing and trading................     1,773     2,953       **
                                                =====     =====

* Percentages are calculated using unrounded amounts.
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

      Electric  margin  increased  $43.7 million in the second  quarter of 2000,
when  compared to the second  quarter of 1999,  primarily  due to the  favorable
results  from  the  wholesale  energy  marketing  and  trading  business,  which
contributed  an  additional  $21.6  million to  electric  margin.  The  increase
resulted from the Company's ability to market excess system power in the western
U.S. at prices  substantially  higher than normal. The future performance of the
wholesale  energy  marketing  and trading  business is  dependent  upon  several
factors   including,   market   conditions,   plant   operational   performance,
availability  of  electric  energy,  implementation  of  deregulation  and other
factors.  In addition,  higher  retail sales of 4.4%  resulting  primarily  from
customer  growth of  approximately  2.5% and the impacts of more normal  weather
served to  increase  margin.  Mild,  wet  weather in the second  quarter of 1999
reduced loads for air conditioning and irrigation.  Increased fuel and purchased
power costs to serve  customer  load growth have resulted in higher cost sharing
under PSCo's ICA.

      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 $14.9 million or 9.8% during the
second  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 $49.1 million or 37.6% during the second
quarter of 2000,  as  compared  to the same  quarter in 1999,  primarily  due to
increased costs related to wholesale energy  marketing  activities and purchased
power capacity and energy costs,  including  option premium charges for stand-by
capacity to serve retail customers.

Gas Operations

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

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

Revenues from gas sales (including unbilled revenues).     $(35,667)
Gas purchased for resale..............................     (31,942)
                                                           -------
 Net decrease in gas sales margin.....................      (3,725)
Transportation revenues...............................       1,854
                                                           -------
 Decrease in net gas margin...........................     $(1,871)
                                                           =======

                                       40

<PAGE>


      The following table compares gas Dth deliveries by major customer  classes
for the second quarter of 2000 and 1999.
                                      Millions of Dth Deliveries
                                                2000  1999    % Change *
                                                ----  ----    ----------
Residential................................     17.3  19.1      (9.7)%
Commercial.................................      8.1   9.3     (12.9)
                                               ----- -----
  Total sales..............................     25.4  28.4     (10.6)
Transportation.............................     31.5  28.1      12.1
                                               ----- -----
  Total....................................     56.9  56.5       0.7
                                               ===== =====       ===

Non-regulated gas marketing and trading....     85.4  40.5      **
                                               ===== =====

* Percentages are calculated using unrounded amounts.
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

      Gas sales  margin  decreased  during  the  second  quarter  of 2000,  when
compared to the second  quarter of 1999,  primarily due to warmer spring weather
in  Colorado  during the  second  quarter of 2000.  The  decrease  in margin was
offset,  in part, by higher gas rates,  effective  July 1, 1999,  resulting from
PSCo's  1998  rate  case  and  the  favorable  impacts  of  customer  growth  of
approximately  3.7%.  Revenues from gas sales decreased $27.6 million related to
non-regulated gas marketing and trading  activities,  due in part to the sale of
Texas Ohio Gas in 1999.

      Gas transportation  revenues  increased  approximately $1.8 million during
the  second  quarter  of 2000,  when  compared  to the  second  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 second  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 $2.0 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  $10.1 million over 1999
primarily due to lower than expected prices for its electric supply costs in the
United Kingdom and operating expenses due to staff reductions  resulting from an
aggressive cost reduction  program (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  decreased $4.1 million
primarily due to lower costs at PSCo including lower gas distribution  operation
costs,  lower  steam  generation  maintenance  and lower  electric  distribution
maintenance  costs.   Other  operating  and  maintenance   expense-non-regulated
decreased $5.7 million  primarily due to lower energy  management and consulting
services,  offset, in part, by increased costs in providing engineering,  design
and construction management.

      Depreciation  and  amortization  increased  $3.9 million during the second
quarter of 2000,  as compared to the same period of 1999,  primarily  due to the
depreciation of property additions.

      Taxes  other  than  income  taxes  decreased  approximately  $4.7  million
primarily due to lower business and utility property tax accruals in Colorado.

                                       41
<PAGE>

      Income taxes  increased  $22.6 million  during the second quarter of 2000,
when  compared  to the same  quarter in 1999,  primarily  due to higher  pre-tax
income in the current  period and higher  Colorado state and foreign tax credits
recognized in 1999.

      Interest charges increased $3.9 million during the second 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.

Six Months Ended June 30, 2000 Compared to the Six Months Ended June 30, 1999

Earnings Available for Common Stock

      Earnings per share (basic and diluted)  were $1.60 ($1.72 per share before
the  extraordinary  item) for the first six months of 2000 as  compared to $1.31
per share (basic and diluted) for the first six months of 1999.  The increase is
primarily  attributable to the Company's  ability to successfully  market excess
system  power in the western  U.S. at prices  substantially  higher than normal.
Continued customer growth in Colorado, the on-going cost containment efforts and
higher  equity in earnings of  Yorkshire  Power also  contributed  to the higher
earnings  in 2000.  During the  second  quarter of 2000,  SPS  discontinued  the
application of regulatory accounting under SFAS 71 for the generation portion of
its business,  and recognized a $13.7 million  extraordinary charge, net of tax.
The  charge  was   recorded   following  a  PUCT  rate  order   addressing   the
implementation of electric utility restructuring for SPS. See Note 1. Summary of
Significant  Accounting  Policies  and  Note 4.  Regulatory  Matters  in Item 1.
FINANCIAL STATEMENTS.

Electric Operations

      The following table details the change in electric  operating revenues and
energy  costs for the six months  ended June 30,  2000,  as compared to the same
period in 1999 (in thousands).

                                                  Increase
                                                  --------
Electric operating revenues:
 Retail.......................................    $47,511
 Wholesale....................................     63,657
 Other (including unbilled revenues)..........     35,250
                                                  -------
  Total revenues..............................    146,418
Fuel used in generation.......................     23,990
Purchased power...............................     84,520
                                                  -------
  Net increase in electric margin.............    $37,908
                                                  =======

The following  table compares  electric Kwh sales by major customer  classes for
the six months ended June 30, 2000 and 1999.

                              Millions of Kwh Sales
                                        2000     1999      % Change *
                                        ----     ----      ----------
Residential .....................       5,112    4,956        3.2%
Commercial and Industrial .......      13,959   13,336        4.7
Public Authority ................         400      384        4.1
                                       ------   ------
  Total Retail...................      19,471   18,676        4.3
Wholesale .......................       7,858    5,787       35.8
                                       ------   ------
Total............................      27,329   24,463       11.7
                                       ======   ======

Power Marketing and Trading......       8,403    4,434       **
                                       ======   ======

*    Percentages are calculated using unrounded amounts
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

      Electric  margin  increased in the first six months of 2000, when compared
to the same period of 1999,  primarily  due to the  favorable  results  from the
wholesale energy marketing and trading business, which contributed

                                       42

<PAGE>

an additional $22.6 million to electric  margin.  The Company was able to market
excess  system  power in the western  U.S. at prices  substantially  higher than
normal.  The future  results of the  Company's  wholesale  marketing and trading
business may be impacted by market  conditions and other factors.  Higher retail
sales of 4.3% resulting  primarily from customer  growth of  approximately  2.5%
favorably impacted margin. Increased fuel and purchased power cost have resulted
in higher cost sharing under PSCo's ICA. 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 $8.4 million and $6.6 million in the first six months
ended June 30, 2000 and 1999,  respectively  (see Note 4. Regulatory  Matters in
Item 1.  FINANCIAL  STATEMENTS).  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.

      Fuel used in generation expense increased  approximately  $23.9 million of
8.4%  during the first six months of 2000,  as  compared  to the same  period in
1999,  primarily due to increased  generation  levels at PSCo and SPS and higher
gas costs for  generation at Fort St. Vrain  generating  station and various SPS
plants.

      Purchased power expense  increased $84.5 million or 32.8% during the first
six months of 2000,  as compared to the same  period in 1999,  primarily  due to
increased  energy marketing and electric trading  activities.  In addition,  the
increase  resulted in part from an extended  outage at one of PSCo's  generating
stations and increased  purchased  power  capacity and energy  costs,  including
option premium  charges for stand-by  capacity.  There was an increase at SPS in
capacity costs of $9 million related to new purchased power contracts.

Gas Operations

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

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

Revenues from gas sales (including unbilled revenues)       $(57,979)
Gas purchased for resale........................             (64,268)
                                                             -------
  Net increase in gas sales margin..............               6,289
Transportation revenues.........................               3,066
                                                              ------
  Increase in net gas margin....................              $9,355
                                                              ======

      The following table compares gas Dth deliveries by major customer  classes
for the first six months of 2000 and 1999.
                                      Millions of Dth Deliveries
                                                2000  1999    % Change *
                                                ----  ----    ----------
Residential................................     55.4  58.1      (4.7)%
Commercial.................................     25.2  27.4      (8.1)
                                               ----- -----
  Total sales..............................     80.6  83.5      (3.5)
Transportation.............................     65.4  59.6       9.7
                                               ----- -----
  Total....................................    146.0 145.1       0.6
                                               ===== =====       ===

Non-regulated gas marketing and trading....    164.5  80.0      **
                                               ===== =====

* Percentages are calculated using unrounded amounts.
** Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

      Gas sales  margin  increased  during  the first six  months of 2000,  when
compared to the first six months of 1999, primarily due to higher base gas rates
effective  July 1,  1999,  resulting  from  PSCo's  1998 gas  rate  case and the
favorable impacts of customer growth of 3.7%. The increase in margin was offset,
in part, by warmer winter/spring  weather during the first six months of 2000 as
it was  approximately  6% warmer  than the first  six

                                       43
<PAGE>

months of 1999. Although non-regulated gas marketing and trading sales increased
significantly,  the margin on such sales  decreased  slightly  when  compared to
prior year.

      Gas  transportation  revenues  increased $3.1 million during the first six
months  of 2000,  compared  to the first six  months 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 six  months of 2000,  as  compared  to the first six  months 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.

Other Operating Revenues and Equity in Earnings of Unconsolidated Subsidiaries

      Other operating  revenues  increased  approximately $8.5 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  $16.9 million over 1999
primarily due to a stronger  performance in the supply  business  resulting from
lower  electricity  supply prices and lower  operating cost due to an aggressive
cost  reduction  program,  and a  change  in its  accounting  for  depreciation,
effective  January 1, 2000.  NCI's equity earnings for the six months ended June
30, 2000, includes  approximately $6.5 million (after-tax) related to the change
in accounting  (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 was comparable with the
prior  year.  The  Company  experienced  lower  electric  and  gas  distribution
maintenance  expenses  and lower  steam  generation  maintenance  expenses.  The
decrease  was  offset by higher  steam  generation  operation  costs and  higher
electric transmission costs.

      Other  operating  and  maintenance  expense-non-regulated  decreased  $3.2
million  during the first six months of 2000,  as compared to the same period in
1999, primarily due to lower energy management and consulting services,  offset,
in part, by increased costs in providing  engineering,  design and  construction
management.

      Depreciation and amortization  increased $6.6 million during the first six
months of 2000,  as compared to the second  quarter  1999,  primarily due to the
depreciation of property additions.

      Taxes other than income taxes decreased  approximately $8.1 million during
the first six months of 2000, as compared to the same period in 1999,  primarily
due to lower business and utility property taxes in Colorado.

      Income taxes  increased  approximately  $27.9 million during the first six
months of 2000,  as compared to the same  period in 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 $9.9 million during the first six
months  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. In July 1999, PSCo issued $200 million
of 6 7/8% Series A Senior Notes, due in July 2009.

                                       44
<PAGE>

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  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.

      In connection with the  deregulation  of the  electricity  industry in the
states of Texas and New Mexico,  SPS is in the process of refinancing  its First
Mortgage Bonds.  As a result,  SPS will remain exposed to interest rate risk for
its generation business.  SPS' fuel adjustment clauses are expected to remain in
effect through December 31, 2001,  thereby  limiting the short-term  exposure to
commodity price risk.

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 second 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 -Six Months Ended June 30
                                         2000           1999        Decrease
                                        -----           ----        --------
Net cash provided by operating
 activities (in millions) .........     $248.4         $314.6        $(66.2)

      Cash  provided  by  operating  activities  decreased  during the first six
months of 2000,  when  compared  to the same  period in 1999,  primarily  due to
NCE/NSP Merger costs and development costs of non-regulated business activities.


                                         2000         1999          Decrease
                                         ----         ----          --------
Net cash used in investing
 activities (in millions) .........    $(252.3)      $(295.7)         $43.4

      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          Increase
                                         ----         ----          --------
Net cash used in financing
 activities (in millions) .........    $ (43.8)      $(3.4)           $(40.4)

      Cash used in financing  activities increased during 2000, when compared to
1999,  primarily due more long-term  debt  financing in 1999.  During the second
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.


                                       45
<PAGE>


Financing Activities

Long-Term Debt

      During the first and second  quarters of 2000, SPS repurchased in the open
market  approximately  $27 million and $58 million,  respectively,  of its First
Mortgage  Bonds.  On July 24, 2000, SPS announced the  commencement  of a tender
offer  for  all  of its  outstanding  First  Mortgage  Bonds  ($294.9  million).
Settlement of bonds  tendered will occur no later than August 9, 2000. Any bonds
not  tendered  or  otherwise  acquired  by SPS are  expected  to be  defeased in
accordance  with SPS' First  Mortgage  Indenture by the end of 2000 (see Note 4.
Regulatory Matters in Item 1. FINANCIAL STATEMENTS.)

      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.

      On June 29, 1999, PSCo filed a registration  statement to issue up to $500
million of  unsecured  debt.  On July 16,  1999,  PSCo  issued  $200  million of
unsecured  senior  notes,  at an  interest  rate of 6 7/8%,  due July 15,  2009.
Proceeds   were  used  for  general   corporate   purposes   including   capital
expenditures,  repayment of short-term  debt and refunding of long-term  debt on
maturity or otherwise.

Bank Lines of Credit

      PSCo and its subsidiary,  PSCCC, closed on a $600 million credit agreement
on July 20,  2000  which  will be used  primarily  to support  the  issuance  of
commercial  paper by PSCo and  PSCCC but also  provides  for  direct  borrowings
thereunder.  This credit  agreement  which  terminates on July 19, 2001 replaces
PSCo's existing $300 million 364 day facility which expired on July 23, 2000 and
PSCo and its  subsidiaries  $300 million  multi-year  facility  which would have
terminated on November 17, 2000.

      SPS closed a credit  agreement on February 25, 2000. The commitment  under
the credit  agreement  is $300 million and  terminates  on February 23, 2001 and
will be used primarily for commercial  paper backup but also provides for direct
borrowings thereunder.

      On July  20,  2000,  SPS  closed a $500  million  credit  agreement  which
terminates  on January 20, 2002.  The funds from this credit  agreement  will be
used for general corporate purposes including  commercial paper backup and costs
resulting from Texas and New Mexico deregulation legislation such as open market
purchases,  tender offer and defeasance costs of SPS' outstanding First Mortgage
Bonds and other related  restructuring  costs. SPS is the initial borrower under
this credit  agreement,  however,  at the time of separation  of the  generation
assets the  obligations  under this credit  agreement will be assumed by a newly
formed generation company.

Electric Utility Industry Restructuring

      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.

                                       46
<PAGE>

      Restructuring  legislation was passed in Texas and New Mexico during 1999.
The PUCT issued a final order addressing SPS' implementation of electric utility
restructuring  in Texas during the second quarter of 2000. SPS plans to pursue a
similar  strategy to  implement  the  restructuring  legislation  enacted in New
Mexico and believes  that all of its  generation  business  will  ultimately  be
deregulated.  SPS discontinued the application SFAS 71 related to its generation
business during the second quarter of 2000, recording an extraordinary charge of
$13.7 million.  See Note 1. Summary of Significant  Accounting Policies and Note
4. Regulatory Matters in Item 1. FINANCIAL STATEMENTS for additional  discussion
related to this matter. The total impacts of deregulation may be affected by the
results  of future  state and  Federal  regulatory  proceedings  prior to actual
implementation of full competition, estimated to begin on January 1, 2002.


                                       47
<PAGE>


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

Three  Months  Ended June 30, 2000  Compared to the Three  Months Ended June 30,
1999

Earnings Available for Common Stock

      Earnings were $60.9 million for the second quarter of 2000, as compared to
$34.8 million for the second quarter of 1999, primarily due to favorable results
from the electric energy marketing and trading activities.

Electric Operations

      The following table details the change in electric  operating revenues and
energy costs for the three  months ended June 30, 2000,  as compared to the same
period in 1999 (in thousands).

                                                 Increase (Decrease)
                                                 -------------------
Electric operating revenues:
 Retail.......................................    $15,680
 Wholesale....................................     97,285
 Other (including unbilled revenues)..........    (37,425)
                                                  -------
  Total revenues..............................     75,540
Fuel used in generation.......................     15,025
Purchased power...............................     31,496
                                                  -------
  Net increase in electric margin.............    $29,019
                                                  =======

       The following table compares electric Kwh sales by major customer classes
for the three months ended June 30, 2000 and 1999.
                              Millions of Kwh Sales
                                        2000     1999      % Change *
                                        ----     ----      ----------
Residential .....................       1,639    1,567        4.6%
Commercial and Industrial .......       3,942    3,799        3.8
Public Authority ................          61       60        2.2
                                       ------   ------
  Total Retail...................       5,642    5,426        4.0
Wholesale .......................       1,561    1,167       33.7
                                       ------   ------
Total............................       7,203    6,593        9.3
                                       ======   ======

Power Marketing and Trading......       1,773    1,793        1.1
                                       ======   ======


* Percentages are calculated using unrounded amounts.

      Electric margin  increased in the second quarter of 2000, when compared to
the second  quarter of 1999,  primarily  due to the  favorable  results from the
energy  marketing and trading  business,  which  contributed an additional $18.6
million to electric margin.  The increase resulted from the Company's ability to
market  excess system power in the western U.S. at prices  substantially  higher
than normal.  The future  performance  of the  wholesale  energy  marketing  and
trading business is dependent upon several factors including, market conditions,
plant operational performance,  availability of electric energy,  implementation
of  deregulation  and other  factors.  In addition,  higher retail sales of 4.0%
resulting  primarily  from  customer  growth  of  approximately  2.8%  served to
increase margin.  Increased fuel and purchased power cost to serve customer load
growth have  resulted in higher cost  sharing  under the ICA.  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 $5.9 million and $2.8 million
in the second  quarter of 2000 and 1999,  respectively  (see Note 4.  Regulatory
Matters in Item 1. FINANCIAL STATEMENTS).

                                       48
<PAGE>

      Fuel used in generation expense increased  approximately  $15.0 million or
27.4%  during the second  quarter of 2000,  as compared  to the same  quarter in
1999,  primarily  due to  increased  generation  levels and higher gas costs for
generation at Fort St. Vrain.

      Purchased power expense increased $31.5 million or 28.1% during the second
quarter of 2000,  as  compared  to the same  quarter in 1999,  primarily  due to
increased costs related to wholesale energy  marketing  activities and purchased
power capacity and energy costs,  including  option premium charges for stand-by
capacity to serve retail customers.

Gas Operations

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

                                                          Increase (Decrease)
                                                          ------------------
Revenues from gas sales (including unbilled
 revenues of $8.6 million) .....................            $ (4,102)
Gas purchased for resale........................              (3,079)
                                                              ------
  Net decrease in gas sales margin..............              (1,023)
Transportation revenues.........................               2,068
                                                              ------
  Increase in net gas margin....................              $1,045
                                                              ======

      The following table compares gas Dth deliveries by major customer  classes
for the second quarter of 2000 and 1999.
                           Millions of Dth Deliveries
                                          2000      1999   % Change *
                                          ----      ----   ----------
Residential...................            16.8      19.0    (11.7)%
Commercial....................             7.6       8.8    (13.0)
                                       -------  --------
  Total sales.................            24.4      27.8    (12.1)
Transportation................            27.2      23.6     15.1
                                       -------  --------
  Total.......................            51.6      51.4      0.4
                                       =======  ========

*  Percentages are calculated using unrounded amounts

      Gas sales margin  (excluding  transportation)  decreased during the second
quarter of 2000,  when compared to the second quarter of 1999,  primarily due to
warmer spring weather during the second quarter of 2000 as it was  approximately
32% warmer than the second  quarter of 1999.  The decrease in margin was offset,
in part, by the higher base gas rates  effective  July 1, 1999,  resulting  from
PSCo's 1998 gas rate case and the favorable impacts of customer growth of 3.8%.

      Gas  transportation  revenues  increased  $2.1  million  during the second
quarter of 2000, compared to the second 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
second  quarter of 2000, as compared to the second  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.

                                       49

<PAGE>


Non-Fuel Operating Expenses and Other Income and Deductions

      Other  operating and maintenance  expenses  decreased  approximately  $8.7
million  primarily due to lower gas distribution  operation  costs,  lower steam
generation maintenance and lower electric distribution maintenance costs.

      Taxes other than income taxes decreased  approximately $3.1 million during
the second quarter of 2000, as compared to the second quarter of 1999, primarily
due to lower business and utility property taxes in Colorado.

      Income  taxes  increased  approximately  $14.9  million  during the second
quarter of 2000, as compared to the second quarter of 1999, due to higher pretax
income in the current period.

      Other income and  deductions-net  increased $3.5 million during the second
quarter of 2000,  as compared to the second  quarter of 1999,  primarily  due to
increased profits in non-utility activities.

      Interest charges  increased  approximately  $1.7 million during the second
quarter of 2000,  as compared  to the second  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.

Six Months Ended June 30, 2000 Compared to the Six Months Ended June 30, 1999

Earnings Available for Common Stock

      Earnings were $129.7  million for the second  quarter of 2000, as compared
to $100.8  million for the second  quarter of 1999,  primarily due to the strong
performance and  contributions  from the electric  energy  marketing and trading
business.

Electric Operations

      The following table details the change in electric  operating revenues and
energy  costs for the six months  ended June 30,  2000,  as compared to the same
period in 1999 (in thousands).

                                                Increase (Decrease)
                                                -------------------
Electric operating revenues:
 Retail.......................................    $17,820
 Wholesale....................................    113,397
 Other (including unbilled revenues)..........    (30,904)
                                                  -------
  Total revenues..............................    100,313
Fuel used in generation.......................     19,362
Purchased power...............................     50,425
                                                  -------
  Net increase in electric margin.............    $30,526
                                                  =======

                                       50

<PAGE>


The following  table compares  electric Kwh sales by major customer  classes for
the six months ended June 30, 2000 and 1999.

                              Millions of Kwh Sales
                                        2000     1999      % Change *
                                        ----     ----      ----------
Residential .....................       3,584    3,499        2.5%
Commercial and Industrial .......       7,903    7,720        2.4
Public Authority ................         124      108       14.7
                                       ------   ------
  Total Retail...................      11,611   11,327        2.5
Wholesale .......................       3,649    3,019       20.9
                                       ------   ------
Total............................      15,260   14,346        6.4
                                       ======   ======

Power Marketing and Trading......       8,403    2,196       **
                                       ======   ======


*    Percentages are calculated using unrounded amounts
**  Percentage  change is  significant,  but  presentation  of the amount is not
meaningful.

      Electric  margin  increased in the first six months of 2000, when compared
to the same period of 1999,  primarily  due to the  favorable  results  from the
wholesale energy marketing and trading business, which contributed an additional
$19.3  million to electric  margin.  The increase  resulted  from the  Company's
ability  to  market   excess   system  power  in  the  western  U.S.  at  prices
substantially  higher than normal. The future results of the Company's wholesale
marketing and trading  business  maybe  impacted by market  conditions and other
factors.  In  addition,  margin  increased  due to higher  retail  sales of 2.5%
resulting primarily from customer growth of approximately  2.7%.  Increased fuel
and  purchased  power costs have  resulted in higher cost sharing under the ICA.
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  $8.4
million and $6.6  million in the second  quarter of 2000 and 1999,  respectively
(see Note 4. Regulatory Matters in Item 1. FINANCIAL STATEMENTS).

      Fuel used in generation expense increased  approximately  $19.4 million or
18.1%  during the first six months of 2000,  as  compared  to the same period in
1999,  primarily due to increased  generation levels to serve native retail load
and market wholesale power within and outside PSCo's service territory.

      Purchased power expense  increased $50.4 million or 22.3% during the first
six months of 2000,  as compared to the same  period in 1999,  primarily  due to
increased costs related to wholesale energy  marketing  activities and increased
purchased power capacity and energy costs,  including option premium charges for
stand-by capacity to serve retail customers.

Gas Operations

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

                                                             Increase
                                                             --------
Revenues from gas sales (including unbilled
 revenues of $6.8 million) .....................             $10,758
Gas purchased for resale........................                 429
                                                              ------
  Net increase in gas sales margin..............              10,329
Transportation revenues.........................               3,758
                                                              ------
  Increase in net gas margin....................             $14,087
                                                             =======

                                       51

<PAGE>


      The following table compares gas Dth deliveries by major customer  classes
for the first six months of 2000 and 1999.
                           Millions of Dth Deliveries
                                          2000      1999   % Change *
                                          ----      ----   ----------
Residential...................            53.8      56.8     (5.3)%
Commercial....................            23.8      25.9     (8.1)
                                       -------  --------
  Total sales.................            77.6      82.7     (6.2)
Transportation................            56.0      50.1     11.6
                                       -------  --------
  Total.......................           133.6     132.8      0.5
                                       =======  ========

*  Percentages are calculated using unrounded amounts

      Gas sales  margin  increased  during  the first six  months of 2000,  when
compared to the first six months of 1999, primarily due to higher base gas rates
effective  July 1,  1999,  resulting  from  PSCo's  1998 gas  rate  case and the
favorable impacts of customer growth of 3.7%. The increase in margin was offset,
in part,  by the lower sales  resulting  from the warmer  winter/spring  weather
during the first six months of 2000  (approximately  6%),  compared to the first
six months of 1999.

      Gas  transportation  revenues  increased $3.8 million during the first six
months  of 2000,  compared  to the first six  months 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 six  months of 2000,  as  compared  to the first six  months 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  decreased  approximately  $5.6
million primarily due to lower electric and gas distribution maintenance expense
and lower steam generation maintenance expense.

      Taxes other than income taxes decreased  approximately $5.3 million during
the first six months of 2000, as compared to the same period in 1999,  primarily
due to lower business and utility property taxes in Colorado.

      Income taxes  increased  approximately  $21.5 million during the first six
months of 2000,  as compared to the same  period in 1999,  due to higher  pretax
income in the current period and the favorable impact of deducting certain prior
year severance costs in 1999.

      Other income and  deductions-net  increased  $4.6 million during the first
six months of 2000,  as compared to the same  period in 1999,  primarily  due to
increased  profits  in  non-utility  operations  and a gain  from  the sale of a
subsidiary's investment.

      Interest charges increased approximately $5.5 million during the first six
months  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. In July 1999, PSCo issued $200 million
of 6 7/8% Series A Senior Notes, due in July 2009.

                                       52

<PAGE>


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.

                                       53

<PAGE>


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

Three  Months  Ended June 30, 2000  Compared to the Three  Months Ended June 30,
1999

Earnings Available for Common Stock

      Earnings  available for common stock were $15.0 million  during the second
quarter of 2000 compared to $22.8 million for the same quarter in 1999. Earnings
decreased   primarily  due  to  the   extraordinary   charge  of  $13.7  million
(after-tax). During the second quarter of 2000, SPS discontinued the application
of  regulatory  accounting  under  SFAS 71 for  the  generation  portion  of its
business,  and recognized a $13.7 million  extraordinary charge, net of tax. The
charge was recorded following a PUCT rate order addressing the implementation of
electric  utility  restructuring  for SPS.  See Note 1.  Summary of  Significant
Accounting  Policies  and  Note 4.  Regulatory  Matters  in  Item  1.  FINANCIAL
STATEMENTS.

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 second quarter of 2000, as compared
to the same period in 1999 (in thousands).

                                            Increase (Decrease)
                                            -------------------
     Electric operating revenues:
      Retail..............................        $29,019
      Wholesale...........................         28,534
      Other (including unbilled revenues).        (25,024)
                                                  -------
        Total revenues....................         32,529
     Fuel used in generation..............            (81)
     Purchased power......................         17,175
                                                  -------
        Net increase in electric margin...        $15,435
                                                  =======

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

                              Millions of Kwh Sales
                                      2000        1999       % Change*
                                     -----        ----       ---------
      Residential ............         672         629           6.8%
      Commercial and Industrial      2,860       2,723           5.0
      Public Authority .......         134         141          (5.0)
                                     -----       -----
        Total Retail..........       3,666       3,493           5.0
      Wholesale...............       2,480       1,986          24.9
                                     -----       -----
      Total...................       6,146       5,479          12.2
                                     =====       =====

* Percentages are calculated using unrounded amounts.

      Electric  operating  revenues  increased $32.5 million or 14.5% during the
second  quarter in 2000,  when compared to the same period in 1999 primarily due
to weather.  Mild, wet weather in the second quarter of 1999,  reduced loads for
air conditioning  and irrigation.  Weather in the second quarter 2000 was closer
to normal. In addition, customer growth of 1.8% favorably impacted margin.

      Purchased power increased $17.2 million during the second quarter of 2000,
when compared to the same period in 1999,  due to an increase in capacity  costs
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

                                       54
<PAGE>

and sells non-firm  energy as the market demands.  Similarly,  SPS will purchase
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 second quarter of 2000,
when  compared to the second  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 $7.1 million or 21.1%
during  the second  quarter of 2000,  as  compared  to the same  period in 1999,
primarily due increases in customer expenses and transmission operations.

      Income taxes  increased $3.0 million during the second quarter of 2000, as
compared  to the same  period  in 1999,  primarily  due to the  effect of higher
pre-tax income (before  extraordinary  item). The effective income tax rates for
the quarter ended June 30, 2000 and 1999 were 36.6% and 37.1%, respectively.

Six Months Ended June 30, 2000 Compared to the Six Months Ended June 30, 1999

Earnings Available for Common Stock

      Earnings  available  for common stock were $33.2  million  ($46.9  million
before the  extraordinary  item) during the second  quarter of 2000  compared to
$46.2 million for the same quarter in 1999.  Earnings  before the  extraordinary
item  increased  only slightly as the favorable  impacts of weather and customer
growth were  substantially  offset by higher operating and restructuring  costs.
During  the  second  quarter  of  2000,  SPS  discontinued  the  application  of
regulatory  accounting under SFAS 71 for the generation portion of its business,
and recognized a $13.7 million  extraordinary charge, net of tax. The charge was
recorded  following a PUCT rate order addressing the  implementation of electric
utility  restructuring  for SPS. See Note 1. Summary of  Significant  Accounting
Policies and Note 4. Regulatory Matters in Item 1. FINANCIAL STATEMENTS.

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  six  months of 2000,  as
compared to the same period in 1999 (in thousands).

                                            Increase (Decrease)
                                            -------------------
     Electric operating revenues:
      Retail..............................        $28,472
      Wholesale...........................         39,892
      Other (including unbilled revenues).        (22,155)
                                                  -------
        Total revenues....................         46,209
     Fuel used in generation..............          4,559
     Purchased power......................         33,231
                                                  -------
        Net increase in electric margin...        $ 8,419
                                                  =======


                                       55
<PAGE>


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

                              Millions of Kwh Sales
                                      2000        1999        % Change*
                                      ----        ----        ---------
      Residential ............       1,418       1,346           5.3%
      Commercial and Industrial      5,725       5,297           8.1
      Public Authority .......         274         274           -
                                     -----       -----
        Total Retail..........       7,417       6,917           7.2
      Wholesale...............       4,209       3,319          26.8
                                     -----       -----
      Total...................       11,626      10,236         13.6
                                     ======      ======

* Percentages are calculated using unrounded amounts.

      Electric  operating  revenues  increased $46.2 million or 10.8% during the
first six months in 2000, when compared to the same period in 1999 primarily due
to weather.  Mild, wet weather in the first six months of 1999 reduced loads for
air  conditioning  and  irrigation.  Weather in the first six months of 2000 was
closer to  normal.  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.

      Purchased  power  increased  $33.2 million  during the first six months of
2000,  when compared to the same period in 1999,  due to an increase in capacity
costs  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  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 second quarter of 2000,
when  compared to the second  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 $9.2 million or 13.6%
during the first six months 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.

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.

                                       56

<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 60 herein.
      12(b) Computation of Ratio of Consolidated  Earnings to Consolidated Fixed
            Charges for SPS is set forth at page 61 herein.

      15(a) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 62 herein for NCE.
      15(b) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 63 herein for PSCo.
      15(c) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 64 herein for SPS.

      27(a) Financial Data Schedule for NCE as of June 30, 2000.
      27(b) Financial Data Schedule for PSCo as of June 30, 2000.
      27(c) Financial Data Schedule for SPS as of June 30, 2000.
      99    Unaudited Pro Forma  Combined  Condensed  Financial Information  of
            New Century Energies, Inc. and Northern States Power Company

(b) Reports on Form 8-K

The  following  reports on Form 8-K were filed since the beginning of the second
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.
- A combined report on Form 8-K dated May 30, 2000, was separately  filed by NCE
and SPS on June 1, 2000.  The items  reported were Item 5. Other Events:  On May
30,  2000,  the PUCT issued a rate order which  approved the  Stipulation  dated
April  18,  2000,  that was  entered  into  with the staff of the PUCT and other
significant parties. The Stipulation  specifically addressed SPS' implementation
plans to meet the requirements of the Texas restructuring legislation enacted in
June 1999. 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 approximately  64-71% of the generation capacity owned by SPS and
its affiliates.
- A combined report on Form 8-K dated and filed on July 24, 2000, was separately
by NCE and SPS. The items reported were Item 5. Other Events:  On July 24, 2000,
SPS  announced the  commencement  of a fixed spread tender offer to purchase for
cash the remaining,  approximately $295 million, principal amount of five series
of SPS First Mortgage Bonds.

                                       57

<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 4th
day of August, 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 4th day of August, 2000.


                                    PUBLIC SERVICE COMPANY OF COLORADO

                                          By     /s/R. C. Kelly
                                          ---------------------------------
                                                   R. C. Kelly
                                            Executive Vice President,
                                          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 4th day of August, 2000.

                                       SOUTHWESTERN PUBLIC SERVICE COMPANY

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


                                       58
<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 60 herein.

12(b) Computation  of Ratio  of  Consolidated  Earnings  to  Consolidated  Fixed
      Charges for SPS is set forth at page 61 herein.

15(a) Letter from Arthur Andersen LLP regarding unaudited interim information is
      set forth at page 62 herein for NCE.

15(b) Letter from Arthur Andersen LLP regarding unaudited interim information is
      set forth at page 63 herein for PSCo.

15(c) Letter from Arthur Andersen LLP regarding unaudited interim information is
      set forth at page 64 herein for SPS.

27(a) Financial Data Schedule for NCE as of June 30, 2000.

27(b) Financial Data Schedule for PSCo as of June 30, 2000.

27(c) Financial Data Schedule for SPS as of June 30, 2000.

99    Unaudited Pro Forma Combined Condensed Financial Information of New
      Century Energies, Inc. and Northern States Power Company

* Previously filed as indicated and incorporated herein by reference.

                                       59

<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)



                                                             Six Months Ended
                                                                 June 30,
                                                             2000        1999
                                                             ----        ----
                                                          (Thousands of Dollars,
                                                              except ratios)

Fixed charges:
   Interest on long-term debt...........................    $62,870    $57,627
   Interest on borrowings against corporate-owned
     life insurance contracts...........................     31,835     28,268
   Other interest.......................................     12,250     11,961
   Amortization of debt discount and expense less premium     2,450      2,166
   Interest component of rental expense.................      5,305      4,591
   Dividends on PSCo obligated mandatorily redeemable
      preferred securities..............................      7,600      7,600
                                                             ------     ------

     Total..............................................   $122,310   $112,213
                                                           ========   ========

Earnings (before fixed charges and taxes on income):
   Net income...........................................   $129,680   $100,759
   Fixed charges as above...............................    122,310    112,212
   Provisions for Federal and state taxes on income,
   net of investment tax credit amortization............     65,453     43,982
                                                             ------     ------

     Total..............................................   $317,443   $256,953
                                                           ========   ========

Ratio of earnings to fixed charges......................       2.60       2.29
                                                               ====       ====

                                       60

<PAGE>



                                                                   EXHIBIT 12(b)

                       SOUTHWESTERN PUBLIC SERVICE COMPANY

                        COMPUTATION OF RATIO OF EARNINGS
                                TO FIXED CHARGES

                 (not covered by Report of Independent Public Accountants)



                                                             Six Months Ended
                                                                 June 30,
                                                             2000        1999
                                                             ----        ----
                                                          (Thousands of Dollars,
                                                              except ratios)

Fixed charges:
   Interest on long-term debt...........................    $19,797    $23,714
   Other interest.......................................      8,235      2,549
   Amortization of debt discount and expense less premium     1,019      1,121
   Interest component of rental expense.................        367        382
   Dividends on SPS obligated mandatorily redeemable
      preferred securities..............................      3,925      3,925
                                                             ------     ------

     Total..............................................    $33,343    $31,691
                                                            =======    =======

Earnings (before fixed charges and taxes on income):
   Net income...........................................    $46,902    $46,226
   Fixed charges as above...............................     33,343     31,691
   Provisions for Federal and state taxes on income,
   net of investment tax credit amortization............     27,446     27,848
                                                             ------     ------

     Total..............................................   $107,691   $105,765
                                                           ========   ========

Ratio of earnings to fixed charges......................       3.23       3.34
                                                               ====       ====

                                       61

<PAGE>



                                                                   EXHIBIT 15(a)

August 4, 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 June 30, 2000, which includes our report dated August
4, 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


                                       62

<PAGE>



                                                                   EXHIBIT 15(b)

August 4, 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 June 30, 2000, which
includes our report dated August 4, 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



                                       63
<PAGE>



                                                                   EXHIBIT 15(c)
August 4, 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 June 30, 2000, which includes
our report dated  August 4, 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

                                       64
<PAGE>


                                                                      EXHIBIT 99

           UNAUDITED PROFORMA COMBINED CONDENSED FINANCIAL INFORMATION

      The following unaudited pro forma combined condensed balance sheet at June
30, 2000 gives  effect to the NCE/NSP  Merger as if it had  occurred at June 30,
2000. The unaudited pro forma combined  condensed  statements of income for each
of the periods  ended June 30,  2000 give effect to the NCE/NSP  Merger as if it
had occurred on January 1, 1999.  These  statements are prepared on the basis of
accounting as required  under a pooling of interests and do not reflect any cost
savings   anticipated  by  management  as  a  result  of  the  NCE/NSP   Merger.
Accordingly,  the pro forma  information  is not  necessarily  indicative of the
financial  position or results of  operations  that would have  occurred had the
NCE/NSP  Merger been  consummated  for the periods for which it is given effect,
nor is it  necessarily  indicative  of future  operating  results  or  financial
condition.


                                       65
<PAGE>


           Unaudited Pro Forma Combined Condensed Statement of Income
                   Reflecting Completion of the NCE/NSP Merger
                         Six Months Ended June 30, 2000
                  (Thousands of Dollars, Except per Share Data)

<TABLE>
<CAPTION>
                                     Northern           New Century      Reporting
                                   States Power          Energies       Adjustments    Pro Forma     Pro Forma
                                   (as Reported)       (as Reported)     (Note 2)     Adjustments    Combined
                                   -------------       -------------    ----------
<S>                                <C>                   <C>            <C>            <C>           <C>
Operating revenues:
   Electric.......................   $1,169,052          $1,348,226     $      1       $             $2,517,279
   Gas............................      303,004             423,394       (8,038)                       718,360
   Nonregulated and other revenues            -              43,902      858,732                        902,634
   Earnings from equity investments           -                   -       70,089                         70,089
                                         ------             -------      -------        -------      ----------
     Total operating revenues         1,472,056           1,815,522      920,784                      4,208,362

Operating expenses:
   Electric fuel and purchased power    367,684             653,095            -                      1,020,779
   Cost of gas sold and transported     189,631             269,313       (9,330)                       449,614
   Other operation and maintenance      412,784             266,865            -                        679,649
   Depreciation and amortization        183,700             145,995       (4,099)                       325,596
   Taxes other than income taxes        113,700              67,013         (845)                       179,868
   Income taxes - utility.........       47,631                   -      (47,631)                             -
   Nonregulated operating expenses            -              45,839      707,151                        752,990
                                         ------             -------      -------       --------       ---------

     Total operating expenses.....    1,315,130           1,448,120      645,246                      3,408,496

Operating income..................      156,926             367,402      275,538                        799,866

Other income (expense):
   Income from nonregulated
    businesses before
    interest and taxes............      186,260                   -     (185,517)                           743
   Equity earnings from unconsolidated
    subsidiaries..................            -              32,640      (32,640)                             -
   Other income (deductions) - net       (6,600)              1,428       (9,750)                       (14,922)
   Income taxes on nonregulated
    and nonoperating
    items - benefit...............      (11,272)                  -       11,272                              -
                                        -------              ------      -------       -------           ------
     Total other income (expense).      168,388              34,068     (216,635)                       (14,179)

Financing costs:
   Interest charges...............      207,276             103,960            -                        311,236
   Distributions on mandatorily
    redeemable preferred securities
    of subsidiary trusts..........        7,875              11,525            -                         19,400
                                          -----              ------       ------       -------           ------

     Total financing costs........      215,151             115,485            -                        330,636

Income before income taxes and
 extraordinary item...............      110,163             285,985       58,903                        455,051
Income taxes......................            -              86,076       58,903                        144,979

Income before Extraordinary item        110,163             199,909            -                        310,072
Extraordinary item................            -             (13,658)           -                        (13,658)
                                        -------             -------      -------       -------          -------
Net income........................      110,163             186,251            -                        296,414
Preferred dividends & redemption
 premiums of NSP..................        2,121                   -            -                          2,121
                                         ------              ------      -------       -------            -----
Earnings available for common
 shareholders.....................     $108,042            $186,251       $    -      $     -        $  294,293
                                       ========            ========       ======      =======        ==========


Average common shares outstanding
 (Note 1).........................      156,305             116,360                    63,998           336,663
Average common and potentially
 diluted shares outstanding (Note 1)    156,352             116,398                    64,019           336,769

Basic and diluted earnings per share:
   Income before extraordinary item       $0.69               $1.72                                       $0.91
   Extraordinary item.............            -               (0.12)                                      (0.04)
                                          -----               -----                                       -----
   Earnings available for common
    shareholders..................        $0.69               $1.60                                       $0.87
                                          =====               =====                                       =====
</TABLE>


        See accompanying notes to Unaudited Pro Forma Combined Condensed
                              Financial Statements.

                                       66
<PAGE>


           Unaudited Pro Forma Combined Condensed Statement of Income
                   Reflecting Completion of the NCE/NSP Merger
                         Six Months ended June 30, 1999
                  (Thousands of Dollars, Except per Share Data)

<TABLE>
<CAPTION>
                                     Northern           New Century      Reporting
                                   States Power          Energies       Adjustments    Pro Forma     Pro Forma
                                   (as Reported)       (as Reported)     (Note 2)     Adjustments    Combined
                                   -------------       -------------    ----------
<S>                                <C>                   <C>            <C>            <C>           <C>
Operating revenues:
   Electric.......................   $1,145,642          $1,201,808     $   (224)      $             $2,347,226
   Gas............................      256,916             478,307      (74,793)                       660,430
   Nonregulated and other revenues            -              35,414      214,743                        250,157
   Earnings from equity investments           -                   -       27,336                         27,336
                                         ------             -------      -------                         ------

     Total operating revenues.....    1,402,558           1,715,529      167,062                      3,285,149

Operating expenses:
   Electric fuel and purchased power    356,586             544,585            -                        901,171
   Cost of gas sold and transported     147,300             333,581      (64,657)                       416,224
   Other operation and maintenance      400,681             266,466            -                        667,147
   Depreciation and amortization        175,580             139,397       (4,434)                       310,543
   Taxes other than income taxes        114,993              75,097       (1,157)                       188,933
   Income taxes - utility.........       53,859                   -      (53,859)                             -
   Nonregulated operating expenses            -              48,991      234,820                        283,811
                                         ------             -------      -------        -------       ---------
     Total operating expenses.....    1,248,999           1,408,117      110,713                      2,767,829

Operating income..................      153,559             307,412       56,349                        517,320

Other income (expense):
   Income from nonregulated
    businesses before
    interest and taxes............       (7,213)                  -        7,213                              -
   Equity earnings from unconsolidated
    subsidiaries..................            -              13,024      (13,024)                             -
   Other income (deductions) - net      (41,629)             (6,151)       3,321                        (44,459)
   Income taxes on nonregulated and
    nonoperating items - benefit..       51,986                   -      (51,986)                             -
                                         ------              ------      -------        -------          ------
     Total other income (expense).        3,144               6,873      (54,476)                       (44,459)

Financing costs:
   Interest charges...............       85,017              94,076            -                         179,093
   Distributions on mandatorily
    redeemable preferred securities
    of subsidiary trusts..........        7,874              11,525            -                          19,400
   Dividends & redemption premiums
    on preferred stock of
    subsidiaries..................            -                   -            -                               -
                                         ------              ------      -------        -------           ------
     Total financing costs........       92,892             105,601            -                         198,493

Income before income taxes........       63,811             208,684        1,873                         274,368
Income taxes......................            -              58,149        1,873                          60,022
                                         ------              ------      -------        -------          ------
Net income........................       63,811             150,535            -                         214,346
Preferred dividends & redemption
 premiums of NSP..................        3,171                   -            -                           3,171
                                         ------              ------      -------        -------          -------
Earnings available for common
 shareholders.....................      $60,640            $150,535       $    -        $     -        $ 211,175
                                        =======            ========       ======        =======        =========

Average common shares outstanding
 (Note 1).........................      152,704             114,881                      63,185          330,770
Average common and potentially
 diluted shares outstanding
 (Note 1).........................      152,834             114,916                      63,204          330,954

Basic and diluted earnings per share      $0.40               $1.31                                        $0.64
                                          =====               =====                                        =====
</TABLE>



        See accompanying notes to Unaudited Pro Forma Combined Condensed
                              Financial Statements.

                                       67

<PAGE>
              Unaudited Pro Forma Combined Condensed Balance Sheet
                   Reflecting Completion of the NCE/NSP Merger
                                  June 30, 2000
                             (Thousands of Dollars)
<TABLE>
<CAPTION>
                                          Northern        New Century      Reporting       Pro Forma
                                        States Power       Energies       Adjustments     Adjustments    Pro Forma
                                        (as Reported)    (as Reported)      (Note 3)       (Note 4)       Combined
                                        -------------    -------------     ----------     ----------     ----------
<S>                                       <C>             <C>             <C>              <C>         <C>
      ASSETS
Property, plant and equipment:
   Electric..........................     $7,563,322      $7,695,165      $   (165,987)    $           $15,092,500
   Gas...............................        971,828       1,362,575           (21,013)                  2,313,390
   Other.............................        390,644         960,228         4,348,625                   5,699,497
                                            --------         -------         ---------      -------    ---------
    Total property, plant and equipment    8,925,794      10,017,968         4,161,625                  23,105,387
   Accumulated provision for depreciation (4,554,809)     (3,687,879)         (257,481)                 (8,500,169)
   Nuclear fuel - net................         97,314               -                 -                      97,314
                                            --------          ------           -------      -------         ------
    Net property, plant and equipment      4,468,299       6,330,089         3,904,144                  14,702,532

Current assets:
   Cash and cash equivalents.........        120,470          36,109                 -                     156,579
   Accounts receivable - net.........        523,252         368,398                 -                     891,650
   Accrued unbilled utility revenues         109,183         254,090                 -                     363,273
   Fuel and gas inventories..........         49,343          58,895                 -                     108,238
   Material and supplies inventories         313,883          73,191                 -                     387,074
   Prepayments and other.............        169,729         145,858                 -                     315,587
                                            --------         -------           -------      -------        -------
    Total current assets.............      1,285,860         936,541                 -                   2,222,401

Other assets:
   Equity investments................      1,039,726         402,793                 -                   1,442,519
   External decommissioning fund and
    other investments................        597,980         131,664                 -                     729,644
   Regulatory assets.................        228,376         295,887                 -                     524,263
   Non-regulated property - net......      3,904,144               -        (3,904,144)                          -
   Other.............................        401,967         271,055                 -      (66,000)       607,022
                                             -------         -------           -------      -------        -------
    Total other assets...............      6,172,193       1,101,399        (3,904,144)     (66,000)     3,303,448
                                           ---------       ---------        ----------      -------      ---------


Total assets.........................    $11,926,352      $8,368,029           $     -     $(66,000)   $20,228,381
                                         ===========      ==========           =======     ========    ===========

      LIABILITIES AND EQUITY
Capitalization:
   Common stock (Note 1).............       $393,217      $  116,755           $     -     $335,671    $   845,643
   Other stockholders' equity (Note 1)     2,367,682       2,672,793                 -     (401,671)     4,638,804
                                           ---------       ---------           -------     --------       ---------
    Total common stockholders equity       2,760,899       2,789,548                 -      (66,000)     5,484,447
   Preferred stockholders' equity            105,340               -                 -                     105,340
   Mandatorily redeemable preferred
    securities of subsidiary trusts..        200,000         294,000                 -                     494,000
   Long-term debt....................      4,838,940       2,248,618                 -                   7,087,558
                                           ---------       ---------            ------      -------     ----------
    Total capitalization.............      7,905,179       5,332,166                 -      (66,000)    13,171,345

Current liabilities:
   Current portion of long-term debt         381,128         176,634                 -                     557,762
   Short-term debt...................        731,849         791,250                 -                   1,523,099
   Accounts payable..................        379,083         440,734                 -                     819,817
   Taxes accrued.....................        168,203          50,812                 -                     219,015
   Other accrued liabilities.........        293,108         331,279                 -                     624,387
                                            --------         -------           -------       -------     ---------
    Total current liabilities........      1,953,371       1,790,709                 -                   3,744,080

Other liabilities:
   Deferred income taxes.............        895,703         957,663                 -                   1,853,366
   Deferred investment tax credits...        113,606          93,017                 -                     206,623
   Regulatory liabilities............        517,764               -                 -                     517,764
   Minority interest in NRG..........        257,477               -                 -                     257,477
   Other.............................        283,252         194,474                 -                     477,726
                                            --------         -------           -------       -------      --------
    Total other liabilities..........      2,067,802       1,245,154                 -                   3,312,956
                                           ---------       ---------           -------       -------     ---------

Total liabilities and equity             $11,926,352      $8,368,029           $     -       $(66,000)   $20,228,381
                                         ===========      ==========           =======       ========    ===========
</TABLE>
        See accompanying notes to Unaudited Pro Forma Combined Condensed
                             Financial Statements.

                                       68
<PAGE>


            Notes to Unaudited Pro Forma Combined Condensed Financial Statements

1. The unaudited pro forma combined condensed  financial  statements reflect the
   conversion of each share of NCE common stock, par value $1.00 per share, into
   1.55 share of common stock of the combined  company and the  continuation  of
   each share of NSP common  stock,  par value $2.50 per share,  as one share of
   common stock of the combined  company  ($2.50 par value),  as provided in the
   NCE/NSP  Merger  Agreement.   The  unaudited  pro  forma  combined  condensed
   financial  statements are presented as if the companies were combined  during
   all periods included therein.

2. The unaudited pro forma combined  condensed income statements reflect certain
   reclassifications  to conform the  presentation of operating  results.  These
   reporting  adjustments  include:  (a) separate  presentation  of nonregulated
   revenues and equity earnings in operating revenues; (b) separate presentation
   of all nonregulated  expenses,  including project  write-downs,  in operating
   expenses;  (c)  presentation  of  nonregulated  interest  and  other  income,
   including  gains for project sales,  in other income  (deductions) - net; and
   (d) presentation of all income taxes (regulated and nonregulated) on a single
   line before arriving at net income.

3. The unaudited  pro forma  combined  condensed  balance sheet at June 30, 2000
   reflects   reporting   adjustments  to  conform  the   presentation  of:  (a)
   investments and deferred charges (in other assets); (b) nonregulated property
   (in property, plant and equipment); and (c) construction work in progress (in
   other property, plant and equipment).

4. The  allocation of the estimated  costs savings  resulting from the merger to
   NCE,  NSP and their  customers,  net of the costs  incurred  to achieve  such
   savings,  will be subject to regulatory review and approval.  At the time the
   merger  agreement  was signed,  cost savings  resulting  from the merger were
   estimated to be  approximately  $1.1 billion over a ten-year  period,  net of
   transaction  costs  (including  fees  for  financial   advisors,   attorneys,
   accountants,  filings and  printing) and net of costs to achieve the savings.
   Nonrecurring  costs  directly  attributable  to the NCE/NSP  Merger are being
   deferred and total  approximately  $66 million as of June 30, 2000.  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
   unaudited pro forma  combined  condensed  statements of income do not reflect
   any of these costs. The unaudited pro forma combined  condensed balance sheet
   has been adjusted to reflect a write-off of the deferred  costs and a related
   reduction of retained earnings.

5. Intercompany   transactions   (including   purchased  and   exchanged   power
   transactions)  between  NCE and NSP during  the  periods  presented  were not
   material and,  accordingly,  no pro forma  adjustments were made to eliminate
   such transactions.



                                       69


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