PUBLIC SERVICE CO OF COLORADO
10-Q, 1999-11-15
ELECTRIC & OTHER SERVICES COMBINED
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                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                  FORM 10-Q

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

           For the quarterly period ended September 30, 1999

                      OR

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

           For the transition period from _____________   to   ____________

           Exact name of registrant as specified in its charter,
           State or other jurisdiction of incorporation or
           organization, Address of principal executive offices
           and Registrant's Telephone Number, including area code
Commission                                                       IRS Employer
File Number                                                   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 November 10, 1999,  115,549,242 shares of the Registrant's Common Stock
were  outstanding.  The  aggregate  market  value of this  common  stock held by
nonaffiliates  based on the  closing  price on the New York Stock  Exchange  was
approximately $3,762,572,193.

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 ...................................... 41


                          PART II - OTHER INFORMATION


Item 1.  Legal Proceedings................................................. 62

Item 6.  Exhibits and Reports on Form 8-K.................................. 62








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,  Year 2000
issues,  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
CERCLA.....................................Comprehensive Environmental Response,
                                                  Compensation and Liability Act
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
DOE.........................................................Department of Energy
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
Fuelco..........Fuel Resources Development Co., a dissolved Colorado Corporation
GCA..........................................................Gas Cost Adjustment
ICA....................................................Incentive Cost Adjustment
IRS.....................................................Internal Revenue Service
Kwh................................................................kilowatt-hour
PSCo/SPS Merger........................business combination between PSCo and SPS
Natural Fuels..........................................Natural Fuels Corporation
NCE or Company........................................New Century Energies, Inc.
NCE/NSP Merger..........................business combination between NCE and NSP
NC Enterprises..............................................NC Enterprises, Inc.
NCI..............................................New Century International, Inc.
NMPRC....................................New Mexico Public Regulation Commission
NOx...............................................................Nitrogen Oxide
NSP................................................Northern States Power Company
PCB.....................................................Polychlorinated Biphenyl
PSCo..........................................Public Service Company of Colorado
PSRI.......................................................PSR Investments, Inc.
PUHCA.....................Public Utility Holding Company Act of 1935, as amended
PRPs.............................................Potentially Responsible Parties
PSCCC.............................................PS Colorado Credit Corporation
PUCT..........................................Public Utility Commission of Texas
QF...........................................................Qualifying Facility
Quixx.........................................Quixx Corporation and subsidiaries
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"
SFAS 121...................Statement of Financial Accounting Standards No. 121 -
       "Accounting for the Impairment of Long-Lived Assets and Long-Lived Assets
          to Be Disposed Of"
Thunder Basin.........................................Thunder Basin Coal Company
UE..............................Utility Engineering Corporation and subsidiaries
WGI.....................................................WestGas InterState, Inc.
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

                                                     September 30,  December 31,
                                                        1999            1998
                                                        ----            ----

Property, plant and equipment, at cost:
   Electric ........................................   $7,388,462    $7,097,070
   Gas..............................................    1,283,045     1,210,605
   Steam and other..................................      108,478       111,620
   Common to all departments........................      462,408       423,287
   Construction in progress.........................      393,405       391,100
                                                          -------       -------
                                                        9,635,798     9,233,682
   Less: accumulated depreciation ..................    3,486,585     3,351,659
                                                        ---------     ---------
     Total property, plant and equipment............    6,149,213     5,882,023
                                                        ---------     ---------



Investments, at cost:
   Investment in Yorkshire Power and other
     unconsolidated  subsidiaries (Note 3)...........     358,069       340,874
   Other.............................................      85,406        64,562
                                                          -------        ------
    Total investments................................     443,475       405,436
                                                          -------       -------


Current assets:
   Cash and temporary cash investments................     40,513        56,667
   Accounts receivable, less reserve for uncollectible
     accounts ($4,809 at September 30, 1999; $4,842 at
     December 31, 1998). .............................    401,029       319,145
   Accrued unbilled revenues..........................    181,955       130,455
   Recoverable purchased gas and electric energy costs     28,645        66,154
   Materials and supplies, at average cost............     78,226        69,298
   Fuel inventory, at average cost....................     30,338        24,653
   Gas in underground storage, at cost (LIFO).........     54,688        52,624
   Prepaid expenses and other.........................     71,997        83,561
                                                          -------        ------
    Total current assets..............................    887,391       802,557
                                                          -------       -------

Deferred charges:
   Regulatory assets (Note 1).........................    351,155       381,632
   Unamortized debt expense...........................     28,697        27,408
   Other..............................................    240,300       172,908
                                                          -------       -------
    Total deferred charges............................    620,152       581,948
                                                          -------       -------
                                                       $8,100,231    $7,671,964
                                                       ==========    ==========


      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

                                                     September 30,  December 31,
                                                        1999            1998
                                                        ----            ----

Common stock.......................................... $1,905,862    $1,866,386
Retained earnings.....................................    788,613       740,677
Accumulated other comprehensive income (Note 1).......      4,757         7,764
                                                          -------        ------
    Total common equity...............................  2,699,232     2,614,827

PSCo and SPS obligated mandatorily redeemable
  preferred securities of subsidiary trusts holding
  solely subordinated debentures of PSCo and SPS
  (Note 7)............................................    294,000       294,000
Long-term debt of subsidiaries .......................  2,272,069     2,205,545
                                                        ---------     ---------
                                                        5,265,301     5,114,372
                                                        ---------     ---------
Noncurrent liabilities:
   Employees' postretirement benefits other than
     pensions ........................................     56,199        61,732
   Employees' postemployment benefits ................     31,237        31,326
                                                           ------        ------
    Total noncurrent liabilities......................     87,436        93,058
                                                           ------        ------

Current liabilities:
   Notes payable and commercial paper ................    521,091       524,394
   Long-term debt due within one year.................    333,640       138,165
   Accounts payable...................................    360,410       285,080
   Dividends payable..................................     69,869        69,271
   Recovered electric energy costs....................      9,538        18,760
   Customers' deposits................................     30,590        30,793
   Accrued taxes......................................     92,016        85,384
   Accrued interest...................................     45,202        50,229
   Other..............................................    121,678       122,747
                                                          -------       -------
    Total current liabilities.........................  1,584,034     1,324,823
                                                        ---------     ---------

Deferred credits:
   Customers' advances for construction...............     59,090        55,400
   Unamortized investment tax credits ................     97,099       100,925
   Accumulated deferred income taxes..................    952,742       947,247
   Other..............................................     54,529        36,139
                                                          -------        ------
    Total deferred credits............................  1,163,460     1,139,711
                                                        ---------     ---------

Commitments and contingencies (Notes 4 and 5)......... ----------    ----------
                                                       $8,100,231    $7,671,964
                                                       ==========    ==========


      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
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating revenues:
   Electric...........................................       $701,483  $760,120
   Gas................................................         88,420    96,857
   Other..............................................         22,984    15,907
                                                              -------    ------
                                                              812,887   872,884

Operating expenses:
   Fuel used in generation............................        190,195   200,039
   Purchased power....................................        139,817   199,340
   Cost of gas sold...................................         38,911    51,385
   Other operating and maintenance expenses-regulated.        124,696   135,237
   Other operating and maintenance expenses-nonregulated       25,661    22,614
   Depreciation and amortization......................         70,777    65,520
   Taxes (other than income taxes) ...................         31,451    34,576
                                                              -------    ------
                                                              621,508   708,711
                                                              -------   -------
Operating income......................................        191,379   164,173

Other income and deductions:
   Equity in earnings of Yorkshire Power and other
     unconsolidated subsidiaries (Note 3).............          2,221    10,247
   Miscellaneous income and deductions - net..........            806       905
                                                              -------    ------
                                                                3,027    11,152

Interest charges and preferred dividends of subsidiaries:
   Interest on long-term debt.........................         45,932    42,737
   Other interest.....................................          8,321     7,602
   Allowance for borrowed funds used during
    construction .....................................         (3,727)   (3,962)
   Dividends on PSCo and SPS obligated mandatorily
    redeemable preferred securities of subsidiary
    trusts holding solely subordinated debentures of
    PSCo and SPS......................................          5,763     5,763
                                                                -----     -----
                                                               56,289    52,140
                                                               ------    ------

Income before income taxes............................        138,117   123,185
Income taxes..........................................         40,190    32,413
                                                              -------   ------
Net income............................................        $97,927   $90,772
                                                              =======   =======

Weighted average common shares outstanding:
   Basic..............................................        115,386   111,606
   Diluted............................................        115,399   111,722

Basic and diluted earnings per share of
 common stock outstanding                                      $ 0.85   $  0.82
                                                               ======   =======


      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)

                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating revenues:
   Electric...........................................   $1,903,291  $1,987,778
   Gas................................................      566,727     574,640
   Other..............................................       58,398      57,442
                                                            -------      ------
                                                          2,528,416   2,619,860

Operating expenses:
   Fuel used in generation............................      476,901     512,238
   Purchased power....................................      397,696     470,302
   Cost of gas sold...................................      372,492     380,641
   Other operating and maintenance expenses-regulated.      391,162     403,917
   Other operating and maintenance expenses-nonregulated     74,652      64,582
   Depreciation and amortization......................      210,174     195,012
   Taxes (other than income taxes) ...................      106,548     100,492
                                                            -------     -------
                                                          2,029,625   2,127,184
                                                          ---------   ---------
Operating income......................................      498,791     492,676

Other income and deductions:
   Equity in earnings of Yorkshire Power and other
    unconsolidated subsidiaries (Note 3)..............       15,245       6,430
   Miscellaneous income and deductions - net..........       (5,345)     (1,040)
                                                            -------      ------
                                                              9,900       5,390

Interest charges and preferred dividends of subsidiaries:
   Interest on long-term debt.........................      131,284     125,928
   Other interest.....................................       22,572      25,054
   Allowance for borrowed funds used during
    construction .....................................       (9,254)    (12,883)
   Dividends on PSCo and SPS obligated mandatorily
    redeemable preferred securities of subsidiary trusts
    holding solely subordinated debentures of
    PSCo and SPS......................................       17,288      11,799
   Dividend requirements and redemption premium on
     preferred stock of subsidiaries..................            -       5,332
                                                               ----       -----
                                                            161,890     155,230
                                                            -------     -------

Income before income taxes............................      346,801     342,836
Income taxes..........................................       98,339     109,322
                                                            -------     -------
Net income............................................     $248,462    $233,514
                                                           ========    ========

Weighted average common shares outstanding:
   Basic..............................................      115,053     111,320
   Diluted............................................      115,079     111,463

Basic and diluted earnings per share of common
  stock outstanding                                          $ 2.16     $  2.10
                                                             ======     =======


      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)


                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating activities:
   Net income.........................................       $248,462  $233,514
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................        220,299   203,036
     Amortization of investment tax credits...........         (3,826)   (3,836)
     Deferred income taxes............................         18,699   (12,328)
     Equity in earnings of Yorkshire Power and other
       unconsolidated subsidiaries, net...............        (15,245)   (6,430)
     Allowance for equity funds used during construction       (1,069)        -
     Change in accounts receivable....................        (81,436)    7,220
     Change in inventories............................        (16,911)   (7,002)
     Change in other current assets...................         (2,424)   67,840
     Change in accounts payable.......................         72,792   (62,319)
     Change in other current liabilities..............        (13,553)   50,545
     Change in deferred amounts.......................        (58,637)   22,398
     Change in noncurrent liabilities.................         (5,622)   10,347
     Other............................................           (464)       (8)
                                                              -------   -------
       Net cash provided by operating activities......        361,065   502,977

Investing activities:
   Construction expenditures..........................       (476,125) (411,778)
   Allowance for equity funds used during construction          1,069         -
   Proceeds from disposition of property, plant
     and equipment ...................................          2,726     3,755
   Acquisition and disposition of subsidiaries, net of
     cash acquired or sold (Note 3)...................         13,877   (13,725)
   Purchase of other investments......................        (17,217)   (4,006)
   Sale of other investments..........................         13,703     6,313
                                                               ------     -----
       Net cash used in investing activities..........       (461,967) (419,441)

Financing activities:
   Proceeds from sale of common stock.................         29,965    34,280
   Proceeds from sale of PSCo obligated mandatorily
    redeemable preferred securities...................              -   187,700
   Proceeds from sale of long-term debt...............        356,335   247,961
   Redemption of long-term debt.......................        (98,321) (156,838)
   Short-term borrowings - net........................         (3,303)  (25,036)
   Redemption of preferred stock (Note 1).............              -  (181,824)
   Dividends on common stock..........................       (199,928) (191,575)
                                                             --------  --------

       Net cash provided by (used in) financing
           activities ................................         84,748   (85,332)
                                                               ------    ------

       Net decrease in cash and temporary cash
          investments ................................        (16,154)   (1,796)
       Cash and temporary cash investments at
          beginning of period ........................         56,667    72,623
                                                               ------    ------
       Cash and temporary cash investments at end
          of period ..................................       $ 40,513  $ 70,827
                                                             ========  ========



      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 September 30, 1999 and 1998
                                 (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 June 30, 1998        111,491,918   $  111,492        $1,615,789     $  672,718        $  5,624     $2,405,623
Comprehensive income (Note 1):
  Net income..........                    -            -                 -         90,772               -         90,772
  Foreign currency translation
   adjustment.........                    -            -                 -              -           8,656          8,656
                                                                                                                   -----
      Comprehensive income                                                                                        99,428

Dividends declared on
  common stock                            -             -                -        (64,805)              -        (64,805)
Issuance of common stock            239,041           239           10,065              -               -         10,304
                                    -------       -------          -------        -------         -------         ------

Balance at September 30,1998    111,730,959    $  111,731       $1,625,854      $ 698,685       $  14,280     $2,450,550
                                ===========    ==========       ==========      =========       =========     ==========


Balance at June 30, 1999        115,242,268    $  115,242       $1,780,974      $ 757,695       $  (9,410)    $2,644,501
Comprehensive income (Note 1):
  Net income..........                    -             -                -         97,927               -         97,927
  Foreign currency translation
   adjustment.........                    -             -                -              -          14,167         14,167
                                                                                                                  ------
   Comprehensive income                                                                                          112,094

Dividends declared on common stock        -             -                -        (67,009)              -        (67,009)
Repurchase of common stock          (34,360)          (34)          (1,207)             -               -         (1,241)
Issuance of common stock            325,796           326           10,561              -               -         10,887
                                    -------       -------          -------        -------         -------         ------


Balance at September 30,1999    115,533,704    $  115,534       $1,790,328       $788,613        $  4,757   $  2,699,232
                                ===========    ==========       ==========       ========        ========   ============
</TABLE>


Authorized shares of common stock were 260 million at September 30, 1999 and
1998.

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


                                       6
<PAGE>


                 NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
          CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY
                  Nine Months Ended September 1999 and 1998
                                 (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, 1997     110,749,301    $  110,749       $1,583,446     $659,050         $4,142      $2,357,387
Comprehensive income (Note 1):
  Net income..........                     -             -                -      233,514              -         233,514
  Foreign currency translation
   adjustment.........                     -             -                -            -         10,138          10,138
                                                                                                                -------
      Comprehensive income                                                                                      243,652

Dividends declared on common stock         -             -                -     (193,879)             -        (193,879)
Issuance of common stock             981,658           982           42,408            -              -          43,390
                                     -------       -------          -------      -------        -------          ------

Balance at September 30,1998     111,730,959    $  111,731       $1,625,854     $698,685       $ 14,280      $2,450,550
                                 ===========    ==========       ==========     ========       ========      ==========


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..........                     -             -                -      248,462              -         248,462
  Foreign currency translation
   adjustment.........                     -             -                -            -         (3,007)         (3,007)
                                                                                                                -------
      Comprehensive income                                                                                      245,455

Dividends declared on common stock         -             -                -     (200,526)             -        (200,526)
Repurchase of common stock           (34,360)          (34)          (1,207)           -              -          (1,241)
Issuance of common stock           1,077,292         1,077           39,640            -              -          40,717
                                   ---------       -------           ------        -----         ------          ------

Balance at September 30,1999     115,533,704    $  115,534       $1,790,328     $788,613       $  4,757      $2,699,232
                                 ===========    ==========       ==========     ========       ========      ==========
</TABLE>


Authorized  shares of common stock were 260 million at September  30, 1999 and
1998.

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

                                       7
<PAGE>


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

                                    ASSETS

                                                     September 30,  December 31,
                                                        1999            1998
                                                        ----            ----
Property, plant and equipment, at cost:
   Electric .....................................     $4,548,872    $4,369,134
   Gas...........................................      1,237,877     1,171,198
   Steam and other...............................         58,407        71,986
   Common to all departments.....................        456,752       418,484
   Construction in progress......................        300,288       264,752
                                                        --------      --------
                                                       6,602,196     6,295,554
   Less: accumulated depreciation ...............      2,327,156     2,241,165
                                                       ---------     ---------
     Total property, plant and equipment.........      4,275,040     4,054,389
                                                       ---------     ---------

Investments, at cost:
   Note receivable from affiliate (Note 3).......        192,620       192,620
   Other.........................................         11,475        22,664
                                                        --------      --------
    Total investments............................        204,095       215,284
                                                        --------      --------

Current assets:
   Cash and temporary cash investments...........         14,617        19,926
   Accounts receivable, less reserve for
     uncollectible accounts ($3,057 at September
     30, 1999; $2,254 at December 31, 1998) .....        170,382       172,587
   Accrued unbilled revenues ....................        126,775       119,856
   Recoverable purchased gas and electric energy
     costs ......................................         20,590        62,761
   Materials and supplies, at average cost.......         54,427        47,881
   Fuel inventory, at average cost...............         28,043        22,361
   Gas in underground storage, at cost (LIFO)....         53,676        51,779
   Prepaid expenses and other....................         35,350        46,523
                                                        --------        ------
    Total current assets.........................        503,860       543,674
                                                        --------       -------

Deferred charges:
   Regulatory assets (Note 1)....................        242,988       269,112
   Unamortized debt expense .....................         18,974        17,874
   Other.........................................         84,289        77,303
                                                        --------      --------
    Total deferred charges.......................        346,251       364,289
                                                        --------      --------
                                                      $5,329,246    $5,177,636
                                                      ==========    ==========


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

                                       8
<PAGE>


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

                           CAPITAL AND LIABILITIES

                                                    September 30,   December 31,
                                                          1999           1998
                                                          ----           ----


Common stock.......................................    $1,302,119    $1,302,119
Retained earnings..................................       338,519       325,213
                                                         --------       -------
    Total common equity............................     1,640,638     1,627,332

PSCo obligated  mandatorily  redeemable preferred
  securities of subsidiary trust holding solely
  subordinated debentures of PSCo (Note 7) ........       194,000       194,000
Long-term debt.....................................     1,619,008     1,643,130
                                                        ---------     ---------
                                                        3,453,646     3,464,462
                                                        ---------     ---------

Noncurrent liabilities:
   Employees' postretirement benefits other than
     pensions .....................................        48,979        55,537
   Employees' postemployment benefits..............        27,195        27,195
                                                           ------        ------
    Total noncurrent liabilities...................        76,174        82,732
                                                           ------        ------

Current liabilities:
   Notes payable and commercial paper..............       396,300       402,795
   Long-term debt due within one year..............       241,856        44,481
   Accounts payable................................       213,328       226,712
   Dividends payable...............................        44,575        46,461
   Recovered electric energy costs.................         9,538             -
   Customers' deposits.............................        23,894        23,902
   Accrued taxes...................................        45,543        57,848
   Accrued interest................................        34,010        36,729
   Current portion of accumulated deferred income
     taxes ........................................         5,422         8,142
   Other...........................................        69,363        68,729
                                                         --------       -------
    Total current liabilities......................     1,083,829       915,799
                                                        ---------       -------

Deferred credits:
   Customers' advances for construction............        57,702        54,260
   Unamortized investment tax credits .............        90,877        94,459
   Accumulated deferred income taxes...............       541,320       538,581
   Other...........................................        25,698        27,343
                                                         --------       -------
    Total deferred credits.........................       715,597       714,643
                                                         --------       -------

Commitments and contingencies (Notes 4 and 5)......    ----------    ----------
                                                       $5,329,246    $5,177,636
                                                       ==========    ==========



      The accompanying notes to consolidated condensed financial 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
                                                                September 30,
                                                               1999      1998
                                                               ----      ----
Operating revenues:
   Electric...........................................       $400,892  $466,221
   Gas................................................         82,471    74,635
   Other..............................................            837       745
                                                              -------   -------
                                                              484,200   541,601

Operating expenses:
   Fuel used in generation............................         60,583    61,019
   Purchased power....................................        114,004   182,852
   Gas purchased for resale...........................         34,900    32,928
   Other operating and maintenance expenses...........         93,098    99,529
   Depreciation and amortization......................         50,332    45,344
   Taxes (other than income taxes) ...................         17,527    21,279
   Income taxes  .....................................         23,172    21,816
                                                              -------   -------
                                                              393,616   464,767
                                                              -------   -------
Operating income......................................         90,584    76,834

Other income and deductions - net.....................            114     3,558

Interest charges:
   Interest on long-term debt.........................         32,430    30,781
   Other interest.....................................          7,710     4,816
   Allowance for borrowed funds used during construction       (2,991)   (3,020)
   Dividends on PSCo obligated  mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of PSCo (Note 7)            3,800     3,800
                                                                -----     -----
                                                               40,949    36,377
                                                               ------    ------
Net income............................................        $49,749   $44,015
                                                              =======   =======




      The accompanying notes to consolidated condensed financial 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)


                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating revenues:
   Electric...........................................   $1,155,904  $1,211,607
   Gas................................................      477,537     473,288
   Other..............................................        5,794       5,946
                                                            -------     -------
                                                          1,639,235   1,690,841

Operating expenses:
   Fuel used in generation............................      167,330     161,202
   Purchased power....................................      340,194     430,783
   Gas purchased for resale...........................      295,462     293,468
   Other operating and maintenance expenses...........      289,646     296,038
   Depreciation and amortization......................      147,694     135,035
   Taxes (other than income taxes) ...................       64,609      62,185
   Income taxes  .....................................       67,154      72,184
                                                            -------     -------
                                                          1,372,089   1,450,895
                                                          ---------   ---------
Operating income......................................      267,146     239,946

Other income and deductions:
   Equity earnings in Yorkshire Power (Note 3)........            -       3,446
   Miscellaneous income and deductions - net..........         (621)      2,641
                                                               ----       -----
                                                              (621)       6,087

Interest charges:
   Interest on long-term debt.........................       92,221      90,047
   Other interest.....................................       19,671      14,967
   Allowance for borrowed funds used during construction     (7,275)     (8,712)
   Dividends on PSCo obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of PSCo (Note 7)..       11,400       5,911
                                                            -------      ------
                                                            116,017     102,213
                                                            -------     -------
Net income............................................      150,508     143,820
Dividend requirements and redemption premium on
  preferred stock ....................................            -       5,332
                                                              -----       -----
Earnings available for common stock...................     $150,508    $138,488
                                                           ========    ========



      The accompanying notes to consolidated condensed financial 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)


                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating activities:
   Net income.........................................       $150,508  $143,820
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................        154,207   139,227
     Amortization of investment tax credits...........         (3,582)   (3,591)
     Deferred income taxes............................          8,333   (14,798)
     Equity in earnings of Yorkshire Power............              -    (3,446)
     Change in accounts receivable....................          2,205    37,457
     Change in inventories............................        (14,125)   (4,984)
     Change in other current assets...................         46,425    60,580
     Change in accounts payable.......................        (13,384)  (61,444)
     Change in other current liabilities..............         (4,860)   18,111
     Change in deferred amounts.......................         (3,515)  (16,389)
     Change in noncurrent liabilities.................         (6,558)   10,834
                                                              -------   -------
       Net cash provided by operating activities......        315,654   305,377

Investing activities:
   Construction expenditures..........................       (370,148) (338,663)
   Proceeds from disposition of property, plant and
      equipment ......................................         13,242     6,207
   Purchase of other investments......................         (1,689)     (466)
   Sale of other investments..........................         12,878     4,394
                                                              -------   -------
       Net cash used in investing activities..........       (345,717) (328,528)

Financing activities:
   Proceeds from the sale of PSCo obligated mandatorily
     redeemable preferred securities..................              -   187,700
   Proceeds from the sale of long-term debt...........        243,270   247,274
   Redemption of long-term debt.......................        (72,932) (156,414)
   Short-term borrowings - net........................         (6,495)   67,600
   Dividends on common stock..........................       (139,089) (121,790)
   Redemption of preferred stock (Note 7).............              -  (181,824)
   Dividends and redemption premium on preferred stock
     (Note 7) ........................................              -    (8,261)
                                                              -------    ------
       Net cash provided by financing activities......         24,754    34,285
                                                              -------   -------
       Net increase (decrease) in cash and temporary
        cash investments .............................         (5,309)   11,134
       Cash and temporary cash investments at
        beginning of period ..........................         19,926    18,909
                                                               ------    ------
       Cash and temporary cash investments at end of
        period .......................................       $ 14,617  $ 30,043
                                                             ========  ========



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


                                       12
<PAGE>


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

                                    ASSETS

                                                      September 30, December 31,
                                                          1999         1998
                                                          ----         ----

Property, plant and equipment, at cost:
   Electric........................................... $2,777,837    $2,665,115
   Construction in progress...........................     89,619       121,407
                                                           ------       -------
                                                        2,867,456     2,786,522
   Less: accumulated depreciation.....................  1,104,908     1,057,183
                                                        ---------     ---------
    Total property, plant and equipment...............  1,762,548     1,729,339
                                                        ---------     ---------


Investments, at cost:
   Notes receivable from affiliate....................    119,036       119,036
   Other..............................................      5,717         5,591
                                                          -------       -------
    Total investments.................................    124,753       124,627
                                                          -------       -------

Current assets:
   Cash and temporary cash investments................     12,384         1,350
   Accounts receivable, less reserve for uncollectible
     accounts ($1,362 at September 30,1999; $1,695 at
     December 31, 1998)... ...........................     90,041        76,190
   Accrued unbilled revenues..........................     54,427         9,373
   Recoverable electric energy cost...................      7,434             -
   Materials and supplies, at average cost............     18,085        16,970
   Fuel inventory, at average cost....................      2,295         2,293
   Current portion of accumulated deferred income taxes         -         6,113
   Prepaid expenses and other.........................      4,306         5,248
                                                          -------       -------
    Total current assets..............................    188,972       117,537
                                                          -------       -------

Deferred charges:
   Regulatory assets (Note 1).........................    107,740       111,971
   Unamortized debt expense...........................      8,854         8,767
   Other..............................................     58,111        37,623
                                                          -------       -------
    Total deferred charges............................    174,705       158,361
                                                          -------       -------
                                                       $2,250,978    $2,129,864
                                                       ==========    ==========



         The accompanying notes to condensed financial 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

                                                      September 30, December 31,
                                                           1999        1998
                                                           ----        ----

Common stock..........................................   $348,402    $348,402
Retained earnings.....................................    415,299     389,818
                                                          -------     -------
    Total common equity...............................    763,701     738,220

SPS obligated mandatorily redeemable preferred
   securities of subsidiary trust holding solely
   subordinated debentures of SPS (Note 7)                100,000     100,000
Long-term debt........................................    605,840     530,618
                                                          -------     -------
                                                        1,469,541   1,368,838
                                                        ---------   ---------

Noncurrent liabilities:
   Employees' postretirement benefits other than pensions   6,823       5,941
   Employees' postemployment benefits.................      3,482       3,571
                                                          -------     -------
    Total noncurrent liabilities......................     10,305       9,512
                                                          -------     -------

Current liabilities:
   Notes payable and commercial paper.................    103,391      85,162
   Note payable to affiliate..........................          -       9,000
   Long-term debt due within one year.................     90,113      90,113
   Accounts payable...................................     89,215      64,275
   Dividends payable..................................     20,912      20,007
   Recovered electric energy costs....................          -      18,760
   Customers' deposits................................      6,105       5,904
   Accrued taxes......................................     28,303      37,646
   Accrued interest...................................     10,863      12,273
   Current portion of accumulated deferred income taxes     2,810           -
   Other..............................................     20,633      18,011
                                                          -------     -------
    Total current liabilities.........................    372,345     361,151
                                                          -------     -------

Deferred credits:
   Unamortized investment tax credits.................      5,031       5,219
   Accumulated deferred income taxes..................    383,805     380,655
   Other..............................................      9,951       4,489
                                                          -------     -------
    Total deferred credits............................    398,787     390,363
                                                          -------     -------

Commitments and contingencies (Notes 4 and 5)......... ----------  ----------
                                                       $2,250,978  $2,129,864
                                                       ==========  ==========



         The accompanying notes to condensed financial 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
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating revenues....................................       $290,587  $284,648

Operating expenses:
   Fuel used in generation............................        130,067   139,021
   Purchased power....................................         18,019     9,946
   Other operating and maintenance expenses...........         29,910    34,189
   Depreciation and amortization......................         18,450    17,754
   Taxes (other than income taxes)....................         13,208    12,525
   Income taxes.......................................         25,020    21,755
                                                              -------   -------
                                                              234,674   235,190
                                                              -------   -------
Operating income......................................         55,913    49,458

Other income and deductions - net.....................          2,349     2,233

Interest charges:
   Interest on long-term debt.........................         13,055    11,553
   Other interest.....................................          1,440     2,163
   Allowance for borrowed funds used during construction         (730)     (917)
   Dividends on SPS obligated mandatorily redeemable
     preferred  securities of subsidiary trust holding
     solely subordinated debentures of SPS                      1,963     1,963
                                                                -----     -----
                                                               15,728    14,762
                                                               ------    ------

Net income............................................        $42,534   $36,929
                                                              =======   =======


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

                                       15
<PAGE>


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


                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----

Operating revenues....................................       $717,253  $748,386

Operating expenses:
   Fuel used in generation............................        310,095   351,036
   Purchased power....................................         34,528    19,666
   Other operating and maintenance expenses...........         97,572   103,650
   Depreciation and amortization......................         55,357    53,291
   Taxes (other than income taxes) ...................         39,079    35,918
   Income taxes ......................................         52,868    54,709
                                                              -------   -------
                                                              589,499   618,270
                                                              -------   -------
Operating income......................................        127,754   130,116

Other income and deductions - net.....................          6,809     5,571

Interest charges:
   Interest on long-term debt.........................         37,889    34,654
   Other interest.....................................          3,989     7,275
   Allowance for borrowed funds used during construction       (1,963)   (4,115)
   Dividends on SPS obligated  mandatorily redeemable
    preferred  securities of subsidiary trust holding
    solely subordinated debentures of SPS ............          5,888     5,888
                                                                -----     -----
                                                               45,803    43,702
                                                               ------    ------

Net income............................................        $88,760   $91,985
                                                              =======   =======


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


                                       16
<PAGE>


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


                                                              Nine Months Ended
                                                                September 30,
                                                               1999      1998
                                                               ----      ----
Operating activities:
   Net income.........................................        $88,760   $91,985
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Depreciation and amortization....................         58,301    56,593
     Amortization of investment tax credits...........           (188)     (188)
     Deferred income taxes............................         13,868    (1,524)
     Allowance for funds used during construction.....         (1,075)        -
     Change in accounts receivable....................        (13,851)   (2,065)
     Change in inventories............................         (1,117)     (994)
     Change in other current assets...................        (51,546)   18,915
     Change in accounts payable.......................         24,940   (32,346)
     Change in other current liabilities..............        (26,690)   19,565
     Change in deferred amounts.......................        (14,111)   38,588
     Change in noncurrent liabilities.................            793      (989)
                                                              -------   -------
       Net cash provided by operating activities......         78,084   187,540

Investing activities:
   Construction expenditures..........................        (88,247)  (64,838)
   Allowance for equity funds used during construction          1,075         -
   Cost of disposition of property, plant and equipment        (1,719)   (2,345)
   Purchase and sale of other investments.............           (126)      186
                                                              -------   -------
       Net cash used in investing activities..........        (89,017)  (66,997)

Financing activities:
   Proceeds from sale of long-term debt...............         99,846         -
   Redemption of long-term debt.......................        (24,733)      (58)
   Short-term borrowings - net........................          9,229   (44,297)
   Dividends on common stock..........................        (62,375)  (71,527)
                                                              -------   -------
       Net cash provided by (used in) financing activities     21,967  (115,882)
                                                               ------  --------
       Net increase in cash and temporary cash investments     11,034     4,661
       Cash and temporary cash investments at beginning
          of period ...................................         1,350       986
                                                                -----       ---
       Cash and temporary cash investments at end
          of period ...................................      $ 12,384   $ 5,647
                                                             ========   =======


           The accompanying notes to condensed financial 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.

      Regulatory Assets and Liabilities

      The Company's regulated subsidiaries prepare their financial statements in
accordance  with the provisions of SFAS 71, as amended.  SFAS 71 recognizes that
accounting for rate regulated  enterprises  should reflect the  relationship  of
costs and revenues introduced by rate regulation.  A regulated utility may defer
recognition  of a cost (a  regulatory  asset)  or  recognize  an  obligation  (a
regulatory  liability) if it is probable that,  through the ratemaking  process,
there will be a corresponding increase or decrease in revenues. Accounting under
SFAS 71 is  appropriate  as long as:  rates are  established  by or  subject  to
approval by independent,  third party regulators;  rates are designed to recover
an enterprise's  cost-of-service;  and 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.

      While  deregulation  legislation  has been enacted in certain states where
SPS operates (see Note 4. Regulatory  Matters),  the Company currently  believes
its utility subsidiaries will continue to be subject to rate regulation.  In the
event that a portion of a  subsidiaries'  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 Company's  subsidiaries  could be required to write-off  their
regulatory  assets,  determine  any  impairment to other assets  resulting  from
deregulation  and write-down any impaired  assets to their estimated fair value,
which could  separately have a material  adverse effect on NCE's,  PSCo's and/or
SPS's financial position, results of operations or cash flows.

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

September 30, 1999                          NCE           PSCo            SPS
                                          ------         ------         ------

Income taxes........................      $138,360      $ 61,555       $ 77,321
Nuclear decommissioning costs.......        62,113        62,113              -
Employees' postretirement benefits
  other than pensions...............        54,329        51,543          2,786
Employees' postemployment benefits..        24,526        24,127              -
Demand-side management costs........        31,699        27,414          4,285
Unamortized debt reacquisition costs        32,345        14,733         17,069
Other...............................         7,783         1,503          6,279
                                            ------        ------         ------
  Total.............................      $351,155      $242,988       $107,740
                                          ========      ========       ========



                                       18
<PAGE>


      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)


December 31, 1998                           NCE           PSCo            SPS
                                          ------         ------         ------

Income taxes........................      $148,499       $ 69,868      $ 79,116
Nuclear decommissioning costs.......        69,490         69,490             -
Employees' postretirement benefits
  other than pensions...............        57,350         54,461         2,889
Employees' postemployment benefits..        24,888         24,416             -
Demand-side management costs........        37,160         31,984         5,176
Unamortized debt reacquisition costs        33,138         15,769        16,808
Other...............................        11,107          3,124         7,982
                                            ------         ------        ------
  Total.............................      $381,632       $269,112      $111,971
                                          ========       ========      ========

      The regulatory  assets of the Company's  regulated  subsidiaries  that are
currently  being  recovered as of  September  30, 1999 and December 31, 1998 are
reflected in rates charged to customers.  The recovery of regulatory assets over
the  next  three  years  is  estimated  to  exceed  $130  million.  Refer to the
discussion  below or the Notes to  Consolidated  Financial  Statements  included
herein and in the NCE,  PSCo and SPS 1998 Annual  Report on Form 10-K for a more
detailed discussion regarding recovery periods.

      On January  27,  1997,  the CPUC  issued its order on PSCo's 1996 gas rate
case. The CPUC allowed recovery of  postemployment  benefits on an accrual basis
under  SFAS  112 and  denied  amortization  of the  approximately  $8.9  million
regulatory  asset recognized upon the adoption of SFAS 112. PSCo has appealed in
the Denver District Court the decision related to this issue. PSCo believes that
it will be  successful  on appeal and that the  associated  regulatory  asset is
realizable.  On April  1,  1998,  in  connection  with  PSCo's  annual  electric
department earnings test filing, PSCo requested approval to recover its electric
jurisdictional  portion of this  regulatory  asset  totaling  approximately  $15
million  over three  years.  In December  1998,  the CPUC  approved a settlement
agreement  on  this  matter,  which  deferred  the  final  determination  of the
regulatory treatment of these costs pending the outcome of the current appeal of
the  decision  on PSCo's gas rate case.  PSCo  believes  that it will be allowed
recovery  of  SFAS  112  costs  on an  accrual  basis.  If  PSCo  is  ultimately
unsuccessful  in its appeal of the gas rate case decision  and/or in its request
to recover its  electric  jurisdictional  regulatory  asset,  all  unrecoverable
amounts will be written off (see Note 4. Regulatory Matters). PSCo recovered its
FERC jurisdictional portion of this regulatory asset.

      Other Property

      Property,  plant and equipment  includes  approximately  $18.4 million and
$25.4 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,  energy  marketing and trading,  non-regulated  energy
services, 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.


                                       19
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

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  intercompany  items  and  transactions  have  been
eliminated.

Energy Trading Activities

      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 nine month  periods  ended  September 30,
1999, NCE recognized net gains of $759,000 and $208,000,  respectively, and PSCo
recognized net losses of $330,000 and $252,000,  respectively,  for market value
changes on energy  trading  contracts.  SPS does not currently  have any trading
activities.

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

Comprehensive Income

      The Company and its subsidiaries adopted Statement of Financial Accounting
Standards No. 130, "Reporting  Comprehensive Income," effective January 1, 1998.
This  statement   establishes   standards  for  the  reporting  and  display  of
comprehensive  income  (net  income  plus all other  changes in net assets  from
non-owner  sources) and its  components in financial  statements.  Comprehensive
income  and  its  components  were  reported  in  NCE's  Consolidated  Condensed
Statements  of  Shareholders'  Equity for the three and nine month periods ended
September  30,  1999.  Other  comprehensive  income  consists  solely of foreign
currency translation adjustments related to the investment in Yorkshire Power.

      For the three and nine month  periods ended  September 30, 1999,  PSCo and
SPS had no comprehensive  income items,  therefore,  comprehensive income equals
net income. For the same periods in 1998, SPS had no comprehensive income items,
therefore,  comprehensive  income equals net income.  For the three months ended
September  30,  1998,  PSCo  had  no  comprehensive  income  items,   therefore,
comprehensive income equals net income.

     PSCo's  comprehensive  income for the nine months ended September 30, 1998,
was impacted solely by activity  occurring in the three month period ended March
31,  1998.  During  the  first  quarter  of 1998,  PSCo had a  foreign  currency
translation  adjustment of $5.3 million  related to the  investment in Yorkshire
Power, included in comprehensive income. On March 31, 1998, PSCo sold NCI (which
includes Yorkshire Power and related foreign currency  translation  adjustments)
to NC  Enterprises.  The  amount  of the sale  included  the  accumulated  other
comprehensive  income of $9.4  million  at March 31,  1998.  As a result of this
sale, PSCo had no accumulated other comprehensive  income at March 31, 1998, and
for all subsequent periods.

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.

                                       20
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

Employee  stock options are the Company's only common stock  equivalents.  There
are no other potentially dilutive securities.

      The potentially dilutive securities included in the computation of diluted
earnings  per share were 13,000 and 26,000 for the three and nine month  periods
ended  September 30, 1999,  respectively,  and 116,000 and 143,000 for the three
and nine month periods ended September 30, 1998, respectively.  These shares had
no impact on the Company's reported earnings per share information.

      Approximately  2,130,000  common  shares are  issuable  under stock option
grants as of September  30, 1999,  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  (200,880 in 1999 and 222,362 in 1998),  valued at
the market price on the date of issuance  (approximately $10 million in 1999 and
1998),  were issued to a savings plan 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.

     Effective  July 1, 1999,  the Company  sold all of the  outstanding  common
stock of Texas-Ohio Gas, Inc. (see Note 6.  Acquistions and  Divestitures).  The
changes in current assets,  current liabilities and deferred amounts for periods
prior to this sale 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 1998 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 NSP,  entered  into an  Agreement  and Plan of
Merger (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 with NSP as 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.  If difficulties  arise in
obtaining the approvals and consents  required to transfer  NSP's utility assets
to a new utility  subsidiary,  NCE and NSP may  negotiate a mutually  acceptable
alternative.

      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 September  30, 1999,  the
NCE/NSP Merger would result in the common  shareholders of NCE owning 54% of the
common  equity of Xcel Energy and the common  shareholders  of NSP owning 46% of
the  common  equity of Xcel  Energy.  The  NCE/NSP  Merger is  expected  to be a
tax-free  stock-for-stock  exchange for shareholders of both companies and to be
accounted for as a pooling-of-interests.

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

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

      NCE and NSP estimate regulated cost savings of approximately $1.1 billion,
net of merger  costs and costs to  achieve  the  savings,  in the first 10 years
after the transaction is completed.  Nonrecurring costs directly attributable to
the NCE/NSP  Merger are being  deferred by NCE.  These costs are  expected to be
amortized to expense by the Company's utility subsidiaries in periods subsequent
to the  consummation of the merger  consistent with the anticipated  recovery in
rates.

      The shareholders of the Company and NSP approved the Agreement and Plan of
Merger on June 28, 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.

      Applications  or  submissions  to  the  state  utility  regulators,  where
required,  and the FERC were  completed in July 1999.  In general,  such filings
propose the sharing of cost savings among customers and  shareholders  for up to
five years.  The required  authorizations  from the state utility  regulators in
Kansas and  Wisconsin  have been  obtained  and orders are  expected  from state
regulators  in Arizona and Oklahoma by year-end.  Hearings  have been  scheduled
during the first  quarter of 2000 in  Colorado,  Minnesota,  New  Mexico,  North
Dakota,  Texas and  Wyoming  and  orders are  expected  by the end of the second
quarter  of 2000.  NCE and NSP are  negotiating  with  the  parties  to  certain
protests filed with the FERC to resolve any  significant  concerns and allow the
FERC's  review to proceed  expeditiously.  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 take another 9 to 12 months to complete.

      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.  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  September  30, 1999 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 and Quarterly  Reports on Form 10-Q
of the respective companies.

      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.


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

Unaudited  Summarized  Pro Forma Balance Sheet  information  as of September 30,
1999 (in millions):

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

Utility plant - net.....   $4,400      $6,149      $1,236      $11,785
Current assets..........      892         887           -        1,779
Other assets............    3,393       1,064      (1,236)       3,221
                           ------      ------      ------       ------
  Total assets..........   $8,685      $8,100      $    -      $16,785
                           ======      ======      ======      =======

Common equity...........   $2,548      $2,699      $    -      $ 5,247
Preferred securities....      305         294           -          599
Long-term debt..........    2,393       2,272           -        4,665
                           ------      ------      ------      ------
  Total capitalization..    5,246       5,265           -       10,511
Current liabilities.....    1,919       1,584           -        3,503
Other liabilities.......    1,520       1,251           -        2,771
                           ------      ------      ------      ------
  Total equity and
    liabilities .......    $8,685      $8,100      $    -     $ 16,785
                           ======      ======      ======     ========

      The unaudited pro forma  balance sheet  information  at September 30, 1999
reflects  reporting  adjustments  to conform the  presentation  of  nonregulated
property (in property, plant and equipment).

Unaudited Summarized Pro Forma Income Statement  information for the nine months
ended September 30 (in millions):

   1999                      NSP         NCE     Adjustments  Pro Forma
                             ---         ---     -----------  ---------

Revenues................   $2,216      $2,528      $  357      $5,101
Operating income........      276         499         166         941
Net income..............      175         248           -         423
Earnings available for
  common ...............      171         248           -         419
Earnings per share......    $1.12       $2.16           -       $1.27

   1998
Revenues................   $2,106      $2,620      $  195      $4,921
Operating income........      279         493         127         899
Net income..............      194         234           -         428
Earnings available for
 common ................      189         234           -         423
Earnings per share......    $1.26      $ 2.10           -       $1.31

      The unaudited pro forma income  statement  information for the nine months
ended September 30, 1999 and 1998 reflect  reporting  adjustments to conform the
presentation of nonregulated revenues and equity earnings in operating revenues.

3. Investment in Yorkshire Power (NCE and PSCo)

      Yorkshire  Power is a joint  venture  initially  equally owned by PSCo 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 and
NCI's  equity in earnings of Yorkshire  Power is 50%, the same as its  ownership
share.

      In August 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 draft price proposals for the U.K.'s regional
electric  distribution  businesses  that would be  effective  for the  five-year
period beginning April 1, 2000

                                       23
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

and provide for price reductions of 15% to 20% in Yorkshire Power's distribution
revenues.  Yorkshire  Power  filed  comments on  September  17, 1999 with Ofgem,
primarily  dealing  with  Ofgem's  analysis  used  in  the  development  of  the
recommendations  included  in the August  price  proposals.  On October 8, 1999,
Ofgem  issued  an  update  to its  August  proposals  which  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.

     Additionally,  on October 8, 1999,  Ofgem issued draft  electricity  supply
price proposals.  The proposals provide 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 new supply  proposals for Yorkshire Power
provide for a real price reduction of approximately  10.7% (of which 7.3% is due
to lower  distribution use of system charges arising from the distribution price
control review) on the standard  domestic tariff and a nominal price freeze from
April 2001 ending in March 2002. If Yorkshire  Power does not agree with Ofgem's
proposed public  electricity  supplier ("PES") license amendment  resulting from
either the  distribution  or supply price control  review then the regulator may
refer the proposals to the Competition Commission.  Following the publication of
the  Competition   Commission's  report,  the  regulator  may  make  appropriate
modifications to Yorkshire Power's PES License.

     Ofgem is expected to publish final proposals on both the  distribution  and
the supply businesses at the end of November 1999.  Yorkshire Power's management
intends to take all available opportunities to grow revenues and reduce costs to
mitigate the impact of the final Ofgem  distribution and supply price proposals.
Should Yorkshire Power be unable to grow revenues and reduce costs 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 in comparison to
its current level of earnings.

      Effective March 31, 1998, PSCo sold its common stock  investment in NCI to
NC Enterprises,  a NCE subsidiary.  NCI's primary investment is Yorkshire Power.
PSCo received as consideration a 20-year  promissory note from NC Enterprises in
the amount of approximately  $292.6 million of which $192.6 remains  outstanding
at September 30, 1999. Annual interest payments are required for the first three
years  followed by principal and interest  payments for the remaining  seventeen
years.  The interest rate on the note is 7.02%. In October 1998, NCE contributed
$100 million to NC Enterprises,  which was used to reduce the principal  balance
of the  promissory  note  to  PSCo.  NCE  intends  to  make  additional  capital
contributions to NC Enterprises to provide the necessary cash flow  requirements
to make payments on the promissory note to PSCo.

      Summarized  income  statement   information  for  the  nine  months  ended
September 30, 1999 and 1998, respectively is presented below (in millions):

                                                      1999      1998
                                                      ----      ----
    Yorkshire Power:
      Operating revenues.......................    $1,679.7   $1,677.3
                                                   --------   --------
      Operating income.........................       200.5      264.8
                                                   --------      -----
      Net income...............................    $   38.5   $   13.6
                                                   ========   ========
    NCI's equity in earnings of Yorkshire Power    $   19.2   $    6.8
                                                   ========   ========

      NCI's equity in earnings of  Yorkshire  Power  increased by  approximately
$12.4 million for the nine months ended September 30, 1999, when compared to the
same period in 1998, primarily due to the impact of one-time items recognized in
1998. In the second quarter of 1998, Yorkshire Power recognized an impairment of
its investment in Ionica, a wireless  telecommunications  company,  upon the May
22,  1998,  announcement  by Ionica  that  negotiations  for release of lines of
credit  from  existing  providers  of bank  finance  had been  unsuccessful.  In
November 1998,  Ionica was placed into  receivership  and an  administrator  was
appointed to oversee its operations and  distribute  its remaining  assets.  The
impairment,  reflecting a write down to fair market value, was offset,  in part,
by an unrelated tax adjustment. These two items reduced NCI's equity earnings in
Yorkshire  Power by  approximately  $16 million.  The  investment  in Ionica was
subsequently sold with no further adverse financial impact.

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


      The unaudited pro forma financial  information,  for the nine months ended
September  30,  1998,  presented  below for PSCo assumes that NCI was sold to NC
Enterprises,  effective January 1, 1998. The pro forma adjustments represent the
removal of NCI's net income from PSCo and the inclusion of interest income,  net
of tax, from the  promissory  note to PSCo from NC  Enterprises.  Based upon the
above assumptions,  shown below is unaudited pro forma financial information for
the nine months ended September 30, 1998 (in millions):

                                                          PSCo Earnings
                                                              1998
                                                              ----
Net income...............................................     $143.8

Pro forma adjustments:
  NCI's net income.......................................       (2.8)
  Interest income from promissory note, net of tax.......        3.2
                                                               -----
Pro forma result.........................................     $144.2
                                                              ======

4. Regulatory Matters (NCE, PSCo and SPS)

Electric Utility Matters

PSCo Performance Based Regulatory Plan

      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 of Service Plan ("QSP")  designed with  performance  measures to
      effectively  penalize  or reward  PSCo  based on the  quality  of  service
      provided  to  retail   customers.   Subsequent  to  the  approval  of  the
      performance based regulatory plan, the reward structure was eliminated for
      the years 1999-2001; and
- -     an Incentive  Cost  Adjustment  ("ICA") which  provides for the sharing of
      energy costs and savings relative to an annual target cost/delivered Kwh.

PSCo  filed  with  the CPUC  its  proposed  Performance  Based  Regulatory  Plan
adjustment  for  calendar  year 1998.  This  adjustment  provides  the means for
implementing the sharing  mechanism for the customers'  portion of earnings over
PSCo's authorized return on equity threshold.  PSCo recorded an estimated refund
obligation of $8 million for the 1998  earnings  test.  Hearings  related to the
final determination of sharing of 1998 earnings,  by the CPUC, are scheduled for
November 1999.  Since July 1998, PSCo has been refunding  amounts related to its
earnings  test refund  obligation  to  customers  through bill  credits.  PSCo's
believes that any obligations related to the sharing of earnings or the QSP will
not have a materially adverse affect on PSCo's financial condition or position.

      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.


                                       25
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

PSCo Wholesale - FERC

      On March 30, 1999, PSCo received  authorization from the FERC to engage in
market-based wholesale power sales. The authorization allows PSCo to sell energy
to e prime, subject to certain conditions, as well as third parties.

SPS Merger Related Rate Reductions

      Under the  various  regulatory  commission  approvals,  SPS is required to
provide  credits to  customers  over five  years  from the date of the  PSCo/SPS
Merger,  August 1, 1997,  for one-half of the measured  non-fuel  operation  and
maintenance  expense  savings  associated  with the  PSCo/SPS  Merger.  SPS will
provide  guaranteed  minimum annual credits to retail customers of $3 million in
Texas,  $100,000 in Oklahoma and $10,000 in Kansas and $1.5 million to wholesale
customers.

      Under a settlement  reached with the NMPRC,  effective  December 30, 1998,
SPS  discontinued  the merger  savings  credit of $1.2 million per year with the
implementation of new retail rates in New Mexico as discussed below.

SPS Electric Cost Adjustment Mechanisms

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

Texas

      The PUCT's  regulations  require  periodic  examination  of SPS's fuel and
purchased  power costs,  the  efficiency  of the use of such fuel and  purchased
power, fuel acquisition and management  policies and purchase power commitments.
SPS is required to file an  application  for the  Commission to  retrospectively
review,  at least every three years,  the operations of a utility's  electricity
generation  and  fuel  management  activities.  In  June  1998,  SPS  filed  its
reconciliation  for the  generation  and  fuel  management  activities  totaling
approximately  $690 million,  for the period from January 1995 through  December
1997.   For  this  same  period,   SPS  had   approximately   $21.4  million  in
underrecovered fuel costs associated with the Texas retail jurisdiction. SPS has
entered into a settlement agreement with the General Counsel of the PUCT, which,
if approved, would provide for the recovery of substantially all fuel costs. The
final outcome of this fuel reconciliation proceeding is pending. Various parties
in the proceedings are contesting the settlement  agreement,  which includes the
recovery  of the Thunder  Basin costs  discussed  below.  Hearings  were held in
October 1999. It is anticipated  that a decision will be issued during the first
quarter of 2000.

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

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

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

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

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

New Mexico

      In October  1997,  the NMPRC  approved  a fixed fuel  factor for SPS's New
Mexico retail  jurisdiction,  effective January 1998. This employs an over/under
fuel collection calculation made on a monthly basis. SPS is required to petition
for a change in the fixed fuel factor if the over/under recovery balance exceeds
$5 million.  In addition,  on an annual basis, SPS files with the NMPRC a report
of SPS's fuel and purchase power costs,  which  includes the current  over/under
recovery  balance and proposed  rate changes to refund or surcharge the balance.
The methodology of the over/under calculation,  plus interest, is similar to the
Texas fixed fuel factor calculation. In January 1999, SPS implemented new annual
fixed fuel cost  recovery  factors to reflect  lower fuel costs  primarily  as a
result of the previously  discussed coal  transportation cost settlement between
SPS's coal supplier and the railroad company.

SPS Rate Cases

New Mexico

      In November 1997, the NMPRC issued an order  investigating SPS's rates. In
the order, the NMPRC  determined that because of the rapid changes  occurring in
the  electric  industry  the NMPRC would  require rate case filings by the major
electricity  suppliers who have not adopted a plan to provide retail open access
and customer  choice of  suppliers.  SPS made a  compliance  filing in May 1998,
which proposed a $1.7 million annual rate reduction for certain retail customers
in New  Mexico and  incorporated  the $1.2  million  guaranteed  minimum  annual
credits,  discussed  above.  In October  1998,  SPS entered into an  uncontested
stipulation  agreement  settling the rate  investigation  case.  As part of this
settlement,  SPS  instituted  a  $6  million  annual  reduction  in  base  rates
(discontinuing  the $1.2  million in  guaranteed  minimum  annual  credits)  for
certain retail customers.  Additionally,  SPS implemented full  normalization in
its accounting  for income taxes with recovery of the New Mexico  jurisdictional
portion of the tax regulatory  asset over 16.8 years.  On November 30, 1998, the
NMPRC approved the stipulation and the new rates became  effective  December 30,
1998.

Wholesale - FERC

      In 1989,  the FERC issued its final order  regarding a 1985 wholesale rate
case. SPS appealed certain portions of that order that related to recognition of
rates for the  reduction  of the federal  income tax rates from 46% to 34%.  The
United  States  Court  of  Appeals  remanded  the  case,  directing  the FERC to
reconsider  SPS's claim.  Negotiated  settlements  with certain  customers  were
reached,  and  approved  by the  FERC,  in 1993 and  1995,  with  SPS  receiving
approximately  $10  million,  including  interest.  Settlement  agreements  were
reached with the two remaining  customers  during 1998 and approved by the FERC.
In June 1998,  SPS recorded  $7.7 million of  additional  revenues in connection


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

with the  settlement.  For the year ended  December 31, 1998, SPS recorded $16.9
million of  additional  revenues  and $7.6  million of  additional  depreciation
expense.

Cheyenne Rate Case

     On August 13, 1999,  Cheyenne  filed a combined gas and electric  rate case
with the Public Service Commission of Wyoming ("WPSC") requesting a $2.3 million
increase in electric and a $1.3 million increase in gas base rates,  including a
12% return on equity.  This follows the expiration of the two-year moratorium on
filing rate cases in connection  with the WPSC approval of the PSCo/SPS  Merger.
Hearings are  scheduled  to begin in January  2000.  Cheyenne  intends to pursue
settlement discussions.

Deregulation Legislation (NCE and SPS)

New Mexico

      On April 8, 1999,  New Mexico enacted the Electric  Utility  Restructuring
Act of 1999, which allows customer choice for residential,  small commercial and
educational customers beginning January 1, 2001. All remaining customers will be
allowed customer choice on 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  quantified  by the  NMPRC.
Transition costs must be approved by the NMPRC prior to being recovered  through
a  non-by-passable  wires  charge,  which must be included in a transition  plan
filing.  All public  electric  utilities  operating  in New  Mexico  must file a
transition  plan with the NMPRC by March 1, 2000.  Before  January 1, 2001,  SPS
must  separate  its utility  operations  into at least two  segments:  a) energy
generation  services and b)  transmission  and  distribution  (including  retail
operations)  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 will be  prohibited  from  providing  unregulated
services.

Texas

      On June 18,  1999,  an electric  utility  restructuring  act  ("SB-7") was
passed in Texas,  which  allows  for 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  earning  test;  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 pilot  projects
which begin for all utilities on June 1, 2001 for 5% of the  utility's  combined
load of all customer classes.

      As  part  of the  above  Texas  legislation,  SPS is  required  to  file a
separation plan, on January 10, 2000, for the unbundling of business  activities
relating  to 1)  generation,  2)  transmission  and  distribution  and 3) retail
services.  The plan is to be  implemented  on  January  1,  2002.  Also,  SPS is
required  to file a rate  case  on  April  1,  2000  to set  the  rates  for the
transmission  and  distribution   services,   which  are  to  be  unbundled  and
implemented  on January 1, 2002.  The Company is evaluating  the effect of these
filings on SPS.

      The legislation specifically addresses competition in the Texas Panhandle,
where SPS operates,  recognizing  that certain  transmission  constraints  exist
within the region that 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
stranded costs, must direct any excess earnings indicated in the annual earnings
tests  during  the  period  January  1,  1999  through   December  31,  2001  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).

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

      Additionally,  the Texas legislation  requires that no generation  company
can own and  control  more  than 20% of the  installed  capacity  located  in or
capable of delivering electricity to a power region.  Utilities owning more than
400 Mw must  auction  entitlements  to at least 15% of the  utility's  installed
generation  capacity  used for  providing  electric  services  to  Texas  retail
customers.  The  capacity  entitlement  auctions  are to continue for 5 years or
until 40% of the utility's  residential and small  commercial  customers  served
prior to the start date of competition are served by  non-affiliated  companies.
The legislation includes several possible remedies to market power abuses. These
provisions  are  not   immediately   applicable  to  SPS  due  to  the  existing
transmission constraints and market power issues in the Panhandle region.

      In connection  with the NCE/NSP Merger approval  proceedings,  the Company
filed supplemental testimony with the PUCT in October 1999 outlining its plan to
address the various  provisions of SB-7. In general,  the plan  presented by the
Company  provides  for  the  transfer  of  ownership  or  control  of  595 Mw of
generating  capacity (either through capacity  entitlement auction or divesting)
to other  competitors  and the  addition  of  transmission  lines to  import  an
additional 400 Mw from other  geographic  regions.  The major components of this
plan include the following:

- -  auction  entitlements (409 Mw or 15 percent of installed generation capacity)
   to capacity  owned and  controlled by SPS, that is dedicated to serving Texas
   retail  customers,  by January 1, 2002. The Company would continue to own and
   operate the capacity,  but  competitors  would have the right to dispatch the
   power.
- -  divest 186 Mw of SPS-area  generating capacity by January 1, 2002 in order to
   further reduce market dominance,
- -  separate SPS existing  competitive  functions  beginning  September 1, 2000,
- -  unbundle SPS into three  separate  companies  beginning January 1, 2002, and
- -  implement a pilot program for retail access for at least 5 percent of its
   Texas  retail  load in June 2001 and to expand  the pilot  program  to 20% of
   customer load in 2002.  Most of the other Texas  utilities  will be moving to
   full customer choice in 2002.

The SPS plan is  designed  to address  the market  power  issues  related to the
deregulation legislation and would promote further competition before the end of
2006 by allowing only  competitors to build new plants in the region between now
and then,  by adding  even more  transmission  lines,  and  possibly  by further
divesting some generation. Hearings on the NCE/NSP Merger are scheduled to begin
in late February,  2000 and the final order is expected in the second quarter of
2000.

Financial Reporting Considerations

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

Gas Utility Matters

PSCo Rate Cases

      In  November  1998,  PSCo  filed a  retail  gas  rate  case  with the CPUC
requesting  an annual  increase in rates of  approximately  $23.4  million.  The
request for a rate increase reflects revenues for additional plant investment, a
12.0%

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

return on equity and the recovery of incremental year 2000 costs (see Note
5. Commitments and  Contingencies - Year 2000 Issue).  On June 8, 1999, the CPUC
approved an increase in base rates of  approximately  $15 million with an 11.25%
return on equity,  effective  July 1, 1999.  PSCo was also  allowed  recovery of
certain  environmental  costs.  Prudently  incurred  year  2000  costs  will  be
recovered 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).  PSCo filed a petition with the Denver  District Court  appealing the
CPUC's decision. PSCo anticipates a decision during late 1999.

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.

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 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.

Environmental Site Cleanup

      As  described  below,  PSCo has  been or is  currently  involved  with the
cleanup of contamination from certain hazardous substances.  In many situations,
PSCo is  pursuing  or intends to pursue  insurance  claims and  believes it will
recover some portion of these costs  through  such claims.  Additionally,  where
applicable, PSCo is pursuing, or intends to pursue, recovery from other PRPs and
through the rate regulatory  process.  To the extent any costs are not recovered
through the options listed above, PSCo would be required to recognize an expense
for such unrecoverable amounts.

      Under  the  CERCLA,  the  EPA  identified,  and a Phase  II  environmental
assessment  revealed,  low  level,   widespread   contamination  from  hazardous
substances at the Barter Metals Company ("Barter") properties located in central
Denver.  For an  estimated  30 years,  PSCo  sold  scrap  metal  and  electrical
equipment to Barter for  reprocessing.  PSCo has  completed  the cleanup of this
site at a cost of approximately  $9 million and has received  responses from the
Colorado Department of Public Health and Environment  ("CDPHE")  indicating that
no further action is required  related to these  properties.  In January 1996, a
lawsuit by PSCo  against its  insurance  providers,  the Denver  District  Court
entered  final  judgment  in favor of PSCo in the  amount  of $5.6  million  for
certain  cleanup  costs at Barter.  Several  appeals and cross appeals have been
filed  by one of the  insurance  providers  and  PSCo in the  Colorado  Court of
Appeals.  The insurance  provider has posted  supersedeas bonds in the amount of
$9.8 million  including the judgement and interest.  In July 1997,  the Colorado
Court of Appeals sent back to trial court the previously awarded judgment on the
basis that the jury had not been properly  instructed  by the Judge  regarding a
narrow issue  associated with certain  policies.  Previously,  PSCo had received
certain insurance  settlement proceeds from other insurance providers for Barter
and other

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

contaminated  sites and a portion of those funds remains to be allocated to this
site by the trial  court.  Both  sides of the  litigation  filed  petitions  for
certiorari  to the Colorado  Supreme  Court,  which granted a hearing on several
issues.  In  September  1999,  the  Colorado  Supreme  Court  held that PSCo was
entitled  to  coverage on all  policies,  but that the trial  court  should have
allocated  the damages and  self-insured  retentions  over the entire period the
facilities were in operations.  Although the Colorado Supreme Court remanded the
judgement to the trial court for additional  proceedings,  it suggested that its
ruling may reduce  PSCo's  available  recovery to  approximately  $1.4  million.
Settlement has been achieved with two small PRPs,  although the Company has been
ultimately  unsuccessful recovering from the remaining has PRP's. In March 1998,
PSCo sold the  remaining  Barter  properties,  and the total  proceeds were $1.1
million.  PSCo requested  recovery of environmental  costs of approximately $7.7
million  related to Barter over four years,  in its proposed  Performance  Based
Regulatory Plan for calendar year 1998 (see Note 4. Regulatory Matters).

      PSCo has  identified  several  other  sites  where  clean up of  hazardous
substances may be required.  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. PSCo will pursue the recovery of
all significant costs incurred for such projects through insurance claims and/or
the rate regulatory process.

Other Environmental Matters

      Under the Clean Air Act  Amendments of 1990  ("CAAA"),  coal-fueled  power
plants are required to reduce SO2 and NOx emissions to specified  levels through
a phased  approach.  PSCo and SPS's  facilities  must  comply  with the Phase II
requirements,  which  will be  effective  in the  year  2000.  Currently,  these
regulations  permit  compliance  with SO2  emission  limitations  by  using  SO2
allowances  allocated  to  plants  by the EPA,  using  allowances  generated  by
reducing  emissions at existing  plants and by using  allowances  purchased from
other  companies.  The Company  expects to meet the Phase II emission  standards
placed on SO2 and Nox  through  the  combination  of:  (1) the use of low sulfur
coal, (2) the operation of air quality control  equipment on certain  generation
facilities,  and (3)  allowances  issued  by the EPA and  purchased  from  other
companies.

      PSCo has obtained all  necessary  conditions  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 required
regulatory  levels discussed above. The cost of these controls will be recovered
through rates.

Hayden Steam Electric Generating Station

      In May 1996,  PSCo and the other joint owners of Hayden Station reached an
agreement  resolving  violations  alleged in complaints  filed by a conservation
organization,  the  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). The
settlement  included  stipulated future penalties for failure to comply with the
terms  of the  agreement,  including  specific  provisions  related  to  meeting
construction  deadlines  associated with the installation of additional emission
control  equipment  and  complying  with  particulate,  SO2  and  NOx  emissions
limitations.  In  August  1996,  the U.S.  District  Court for the  District  of
Colorado  entered the  settlement  agreement,  which  effectively  resolved this
litigation.  Installation of certain portions of this emission control equipment
has been completed with the remaining requirements in process and on schedule in
accordance   with  the  settlement   agreement.   The  joint  owners   completed
installation  and began operating the emission  control  equipment  required for
Unit 1 on time in accordance with the settlement  agreement in late 1998. In May
1999,  Unit 2 began  operating  with the required  particulate  and NOx emission
control  equipment.  The  operation of SO2 emission  control  equipment has been
delayed  due to  equipment  problems.  The joint  owners  have filed a notice of
"force majeure" to excuse any equipment  related  delays.  The joint owners will
withdraw this notice if they resolve the equipment  problems within the terms of
the settlement agreement.


                                       31
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

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: (1) the station exceeded the 20%
opacity  limitations in excess of 14,000 six minute  intervals during the period
extending from the first quarter of 1991 through the second quarter of 1996, and
(2) the owners  failed to operate the station in a manner  consistent  with good
air pollution control practices.  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.  Settlement discussions were held in 1998,
although no settlement was achieved.  On March 8, 1999, the U. S. District Court
ruled on all pending  motions in the case.  It held that:  (1) the  conservation
organization  has  standing  to  bring  the  litigation;  (2)  the  conservation
organization  may rely on continuous  opacity  monitor data to  demonstrate  the
plant's  violation of the opacity  standard;  (3) the Craig  Station  owners may
challenge  the accuracy of the monitor data at trial;  and (4) the  conservation
organization  must prove at trial that the  station has not  operated  with good
pollution  control  practices.  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.

Fort St. Vrain

      PSCo has  completed all  decommissioning  activities at Fort St. Vrain and
the site has been released for unrestricted  use. PSCo is currently  operating a
gas-fired combined cycle steam generation plant at this facility.  Spent nuclear
fuel is currently  being stored  on-site in the  Independent  Spent Fuel Storage
Installation  ("ISFSI").  In 1996,  PSCo and the DOE entered  into an  agreement
resolving  all the  defueling  issues,  as  discussed  in Notes to  Consolidated
Financial Statements in NCE's and PSCo's 1998 annual report on Form 10-K.

      On June 4, 1999, the Nuclear  Regulatory  Commission  ("NRC") approved the
transfer  of the  ISFSI to the DOE.  The NRC has been  notified  by the DOE that
license transfer  activities have been completed.  NRC has performed their final
inspection  of  the  ISFSI.  All  functions,  responsibilities,   ownership  and
liabilities now reside with the DOE.

Tax Matters

      PSRI, a subsidiary  of PSCo,  owns and manages  permanent  life  insurance
policies  on certain  past and present  employees.  These  corporate  owned life
insurance  ("COLI")  policies  were entered into prior to July 1, 1986. In 1996,
Congress  passed  legislation  to phase out the tax  benefits  with certain COLI
policies, however, PSCo'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 totaling  approximately  $54.6 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. PSCo has not recorded any
provision for income tax or interest expense related to this matter.  Management
believes that PSCo's tax deduction of interest  expense on life insurance policy
loans  was in full  compliance  with  IRS  regulations  and  believes  that  the
resolution  of this  matter  will not have a material  adverse  impact on PSCo's
financial position, results of operations or cash flows.


                                       32
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

Year 2000 Issue

      The Y2K issue is a result of a universal programming standard that records
dates as six  digits,  e.g.,  mm/dd/yy,  using  only the last two digits for the
year. Any automated system software or firmware that uses two-digit fields could
understand  the year 2000 as the year 1900 if the issue is not  corrected.  This
situation  is not  limited to  computers;  it has the  potential  to affect many
systems,  components and devices,  which have embedded computer chips, which may
be date  sensitive.  The Y2K issue  could  result in a major  system  failure or
miscalculations  and  does  impact  many  NCE  systems  considered  critical  or
important to the  Company's  business  operations.  Systems  posing the greatest
business risks to the Company include power generation and distribution systems,
telecommunications  systems,  energy trading  systems and billing  systems.  The
Company is  correcting  all  potential  Y2K  failure  points  identified  in its
critical  automated systems to maintain service to its customers and to mitigate
legal and financial risks.

      In 1997,  the Company  established  the Y2K Program  Office to oversee all
corporate-wide  Y2K  initiatives.   These  initiatives  encompass  all  computer
software,  embedded systems, as well as contingency planning.  Teams of internal
and external  specialists  were  established  to  inventory  and assess and test
critical  computer programs and automated  operational  systems and modify those
that  may  not be  Y2K  compliant.  The  inventory  and  assessment  phases  for
information  technology  ("IT") systems were completed in 1998.  Remediation and
testing  phases for all critical IT systems were completed by June 30, 1999. For
critical non-IT systems,  which exist primarily in the generation,  transmission
and distribution areas of the business, the inventory,  assessment,  remediation
and testing  phases were also  completed by June 30, 1999. NCE has achieved "Y2K
Ready" status for all  mission-critical  electrical  generating and transmission
facilities.  Readiness was accomplished by June 30, 1999, in accordance with the
guidelines  established  by the  North  American  Electric  Reliability  Council
("NERC").  NCE is a  participant  in the NERC Y2K Program  that has  established
reporting criteria and milestone dates for electric utilities. The final step of
this program was the submittal of a letter to the president of NERC,  certifying
that the company has met the NERC Y2K goal. NCE submitted its Y2K  certification
letter, without exceptions, with its June 1999 NERC report. In October 1999, NCE
successfully completed an external review of NCE's Y2K program by an independent
third  party.  The review  criteria  followed by the  external  review team were
developed for the  independent  verification  and validation  study that NERC is
conducting for the DOE.

      The Company  has  identified  third  parties,  with which it has  material
business relationships including  interconnected  utilities,  telecommunications
service  providers,  fuel  and  water  suppliers,  equipment  suppliers,  leased
facilities  and  financial  institutions.  Subject  matter  experts,  along with
functional managers,  continue to evaluate the current list of third parties and
have ongoing discussions with these and other critical suppliers about their Y2K
readiness and contingency planning efforts.

      The Company  currently expects to incur costs of approximately $17 million
(approximately  $13  million  has been  spent  through  September  30,  1999) in
operating and capital expenditures to modify its computer software, hardware and
other  automated  systems used in  operations  enabling  proper data  processing
relating to the year 2000 and beyond.  The Company has spent  approximately  $18
million in operating and capital expenditures for the accelerated replacement of
certain  non-compliant  IT systems.  PSCo and SPS have  incurred the majority of
these costs.  The table below details the actual costs incurred  during 1998 and
prior periods; the actual costs incurred through the nine months ended September
30, 1999;  and the estimated  costs to be incurred  during the remainder of 1999
and the first quarter of 2000. A significant  portion of the remaining  costs to
be  incurred  consists  of  finalizing  remaining  work on nonmission-critical
systems, testing, project management and contingency planning.

                                       33
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

<TABLE>
<CAPTION>
                                                               Remaining       Estimated
                          Actual Costs      Actual Costs    Estimated Costs  Total Project
                          1998 and Prior        1999         to be Incurred      Costs
                          --------------     --------       --------------      -------
                                                     (in millions)

<S>                            <C>             <C>                <C>            <C>
Operating expenses..           $8.0            $3.9               $3.0           $14.9
Capital for automated
     system components          0.7             0.6                0.3             1.6
IT replacement projects:
     Operating......            0.2             0.6                0.1             0.9
     Capital........            6.4            10.9                  -            17.3
                               ----            ----               ----           -----
       Total........          $15.3           $16.0               $3.4           $34.7
                              =====           =====               ====           =====
</TABLE>

      Yorkshire Power has also undertaken  activities to address Y2K issues. The
estimated  proportionate share of Yorkshire's incremental Y2K costs (costs which
would not have been  required in the normal  course of business)  that will flow
through to the Company's earnings as a result of such activities is not expected
to have a material impact on the financial condition or results of operations of
the Company.

      The most  reasonably  likely  worst  case  scenario  resulting  during Y2K
critical  dates is a loss of  production  capacity from certain of the Company's
generating units, along with loss of a portion of the communication  system that
is critical to generation and distribution  control.  If this were to occur, the
Company's  operating  utilities  may be  required  to  "island"  (separate  from
neighboring  interconnected utilities) their generation and distribution systems
in their service  territories.  As part of this  scenario,  difficulty  could be
encountered with the restart of generating  units. The overall blackout recovery
plan for NCE is designed so that this most reasonably likely worst case scenario
would be addressed and electricity  restored.  Critical  components of this plan
have been and continue to be tested to provide  assurance  that the Company will
be prepared  for risks which could  result from the Y2K  millennium  change.  In
September  1999,  PSCo and SPS  successfully  participated  in an  inter-control
center  drill  involving   utilities  of  the  Rocky  Mountain  Power  Area  and
Southwestern  Power Pool respectively,  simulating  islanding and restoration of
generation facilities.

      The Company has substantially  completed all major Y2K initiatives.  Based
on the results of all testing completed to date,  management does not anticipate
any  significant  Y2K related  events and,  accordingly,  does not believe  such
matters will have a material adverse impact on the financial  position,  results
of operations or cash flows of the Company or its subsidiaries.

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.  Acquisitions and Divestitures (NCE)

Acquisition of Planergy

      Effective  April 1, 1998,  the  Company  acquired  all of the  outstanding
common stock of Falcon Seaboard Energy Services,  Inc.  ("Planergy") and assumed
other outstanding debt.  Planergy includes Planergy,  Inc. and Planergy Services
and is primarily engaged in energy  consulting,  energy  efficiency  management,
conservation programs and mass-market  services.  Such acquisition was accounted
for using the  purchase  method and the  acquired  assets and  liabilities  were
valued at their  estimated  fair  market  values as of the date of  acquisition.

                                       34
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

Planergy  has  been  consolidated  as a  subsidiary  of NC  Enterprises  in  the
Company's consolidated financial statements.

Sale of Texas-Ohio Gas, Inc.

      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  e  prime  and  its
subsidiaries.  This  sale did not have a  significant  impact  on the  Company's
financial position, results of operations or cash flows.

7. 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,  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.

8. 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  since  1997.  Revenues  from
operating  segments  below the  quantitative  thresholds are included in the all
other category.  Those  primarily  include a company  involved in  non-regulated
power and gas marketing activities  throughout the United States; a company that
invests in and develops cogeneration and energy related projects; a company that
is  engaged  in   engineering,   design   construction   management   and  other

                                       35
<PAGE>
      NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS - (Continued)

miscellaneous  services  and a  company  engaged  in energy  consulting,  energy
efficiency management, conservation programs and mass market services.

      The accounting policies of the segments are the same as those described in
Note 1. Summary of Significant Accounting Policies. NCE evaluates performance by
each legal entity based on profit or loss  generated from the product or service
provided. NCE segment information is as follows (in thousands):
<TABLE>
<CAPTION>
                                                                           Eliminations/
Three months ended:      Electric     Gas                          All     Unallocated     Consolidated
September 30, 1999       Utility     Utility    International    Other      Amounts *         Total
                         --------    -------    -------------   ------      ---------         -----

<S>                     <C>          <C>          <C>           <C>        <C>           <C>
Revenues:
 External customers    $  701,597    $83,504      $     -       $27,786    $      -       $812,887
 Intersegment                 111      1,347            -        41,126     (42,584)             -
 Segment profit            89,210     (3,638)       7,974         6,921      (2,540)        97,927

September 30, 1998
Revenues:
 External customers    $  759,926    $75,871      $     -       $37,087    $      -       $872,884
 Intersegment                 221      1,171            -        25,986     (27,378)             -
 Segment profit            86,731     (6,869)      16,321         4,389      (9,800)        90,772

Nine months ended:
September 30, 1999
Revenues:
 External customers    $1,903,181   $487,018      $     -      $138,217    $      -     $2,528,416
 Intersegment                 373      5,005            -        91,120     (96,498)             -
 Segment profit           207,338     13,465       26,049        10,299      (8,689)       248,462

September 30, 1998
Revenues:
 External customers    $1,987,033   $483,580      $     -      $149,247    $      -     $2,619,860
 Intersegment                 835      3,521            -        56,489     (60,845)             -
 Segment profit           217,004     16,748       13,161        18,458     (31,857)       233,514
</TABLE>

* Certain financing costs have been allocated to the operating segments in 1999.

PSCo:
      PSCo has two reportable segments: electric utility and gas utility. During
1998, PSCo had three reportable segments:  electric, gas and international.  The
electric  utility  segment  consists  primarily  of  the  activities  of  PSCo's
regulated  operations that provide  wholesale and retail electric service in the
state of 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  and a finance  company  that
finances certain of PSCo's current assets.  The  International  segment does not
apply to PSCo in 1999, as PSCo sold NCI to NC  Enterprises  effective  March 31,
1998, (see Note 3. Investment in Yorkshire Power).


                                       36
<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.  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
September 30, 1999       Utility     Utility    International    Other      Amounts *         Total
                         --------    -------    -------------   ------      ---------         -----
<S>                    <C>          <C>           <C>          <C>         <C>            <C>
Revenues from
 external customers    $  400,892   $ 82,471      $     -      $   837     $       -      $  484,200
Segment profit             49,092     (3,579)           -        4,236             -          49,749

September 30, 1998
Revenues from
 external customers    $  466,221   $ 74,635      $     -      $   745     $       -      $  541,601
Segment profit             50,908     (7,152)           -        6,095        (5,836)         44,015

Nine months ended:
September 30, 1999
Revenues from
 external customers    $1,155,904   $477,537      $     -      $ 5,794     $       -      $1,639,235
Segment profit            122,483     13,202            -       14,823             -         150,508

September 30, 1998
Revenues from
 external customers    $1,211,607   $473,288      $     -      $ 5,946     $       -      $1,690,841
Segment profit            128,812     16,077        2,799       13,407       (22,607)        138,488
</TABLE>

* Certain financing costs have been allocated to the operating segments in 1999.

SPS:
     SPS operates in the regulated electric utility industry providing wholesale
and  retail  electric  service in the states of Texas,  New  Mexico,  Kansas and
Oklahoma.  Revenues from external  customers  for this  reportable  segment were
$290.6 million and $284.6 million for the three months ended  September 30, 1999
and 1998,  respectively.  Revenues from external  customers for this  reportable
segment  were  $717.3  million  and $748.4  million  for the nine  months  ended
September 30, 1999 and 1998, respectively.

9.  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 September 30, 1999 and December 31, 1998 and the results of
operations  for the three and nine months ended  September 30, 1999 and 1998 and
cash flows for the nine months ended  September 30, 1999 and 1998. The unaudited
consolidated condensed financial information and notes thereto should be read in
conjunction with the consolidated financial statements and notes included in the
combined 1998 Form 10-K for NCE, PSCo and SPS.

      Because of seasonal and other  factors,  the results of operations for the
three  and nine  months  ended  September  30,  1999  should  not be taken as an
indication of earnings for all or part of the balance of the year.



                                       37
<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 September
30,  1999,  and the  related  consolidated  condensed  statements  of income and
shareholders'  equity for the three and nine-month  periods ended  September 30,
1999 and 1998 and the  consolidated  condensed  statements of cash flows for the
nine-month periods ended September 30, 1999 and 1998. 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 generally accepted accounting principles.

We have  previously  audited,  in accordance  with generally  accepted  auditing
standards,  the  consolidated  balance sheet of New Century  Energies,  Inc. and
subsidiaries as of December 31, 1998, 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 23, 1999,  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, 1998, 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,
November 9, 1999


                                       38
<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
September 30, 1999, and the related consolidated  condensed statements of income
for the three and nine-month  periods ended  September 30, 1999 and 1998 and the
consolidated condensed statements of cash flows for the nine-month periods ended
September 30, 1999 and 1998. 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 generally accepted accounting principles.

We have  previously  audited,  in accordance  with generally  accepted  auditing
standards,  the consolidated balance sheet of Public Service Company of Colorado
and  subsidiaries  as  of  December  31,  1998,  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 23,
1999, 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,  1998,  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,
November 9, 1999



                                       39
<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 September 30, 1999,  and the
related  condensed  statements  of income for the three and  nine-month  periods
ended September 30, 1999 and 1998 and the condensed statements of cash flows for
the  nine-month  periods  ended  September  30, 1999 and 1998.  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 generally accepted accounting principles.

We have  previously  audited,  in accordance  with generally  accepted  auditing
standards,  the  balance  sheet of  Southwestern  Public  Service  Company as of
December 31, 1998, 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 23, 1999, 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, 1998, is fairly stated,
in all  material  respects,  in relation to the balance  sheet from which it has
been derived.


                                                        ARTHUR ANDERSEN LLP

Denver, Colorado,
November 9, 1999




                                       40
<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  September  30, 1999  Compared to the Three  Months Ended
September 30, 1998

NCE/NSP Merger

      On March 24, 1999,  the Company and NSP entered into an Agreement and Plan
of Merger  providing  for a strategic  business  combination  of the  companies.
Consummation of this "merger of equals" is subject to certain closing conditions
and the obtaining of applicable  regulatory  approvals.  Assuming all regulatory
approvals can be achieved in a timely manner,  it is expected the NCE/NSP Merger
will be completed in the later half of 2000. At the special shareholder meetings
on June 28, 1999,  the  shareholders  of NCE and NSP approved the  Agreement and
Plan of Merger.  The name of the merged  company  will be Xcel Energy  Inc.  The
combined company is anticipated to be one of the top 10 largest gas and electric
energy companies in the U.S. Xcel Energy Inc. will serve approximately 3 million
electricity  customers  and 1.5  million  natural gas  customers  in portions of
twelve states. See Note 2. Proposed Merger with Northern States Power Company in
Item 1. FINANCIAL STATEMENTS.

Earnings

      Earnings per share (basic and diluted) were $0.85 for the third quarter of
1999 as compared to $0.82 per share (basic and diluted) for the third quarter of
1998.  The  increase in  earnings  was  primarily  attributed  to higher  retail
electric and gas sales resulting from continuing customer growth in Colorado and
lower operating and maintenance expenses in the Company's regulated  businesses.
Electric customer growth was approximately 2.0% over the prior year, with growth
in natural gas customers of approximately 3.4%.

Electric Operations

      The following table details the change in electric  operating revenues and
energy  costs for the third  quarter of 1999 as  compared  to the same period in
1998 (thousands of dollars).
                                                      Increase (Decrease)
                                                      -------------------
Electric operating revenues:
Retail................................................    $(18,085)
Wholesale.............................................     (92,620)
Other (including unbilled revenues)...................      52,068
                                                           -------
  Total revenues......................................     (58,637)
Fuel used in generation...............................      (9,844)
Purchased power.......................................     (59,523)
                                                           -------
  Net increase in electric margin.....................    $ 10,730
                                                          ========

      The following table compares  electric Kwh sales by major customer classes
for the third quarter of 1999 and 1998.
                                              Millions of Kwh Sales
                                                1999      1998    % Change *
                                                ----      ----    ----------
Residential................................     2,947     2,885      2.2%
Commercial and industrial..................     7,654     7,572      1.1
Public authority...........................       203       247    (17.8)
                                                -----     -----
  Total retail.............................    10,804    10,704      0.9
Wholesale..................................     4,247     5,189    (18.2)
                                                -----     -----
  Total....................................    15,051    15,893     (5.3)
                                               ======    ======

Power marketing and trading................     3,067       666     **
                                                =====     =====

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

                                       41
<PAGE>

      Electric margin increased $10.7 million or approximately 3.0% in the third
quarter of 1999,  when compared to the third  quarter of 1998,  primarily due to
slightly higher retail sales resulting from customer  growth.  This increase was
offset,  in part, by an increase in PSCo's  provisions  for  estimated  customer
refunds  in  connection  with the  earnings  sharing  in excess of 11% return on
equity.  Retail revenues decreased overall despite the higher sales due to lower
fuel cost recovery.  Wholesale revenues decreased due to lower non-firm sales in
1999. Power trading  activities have increased,  although revenues and purchased
energy costs for these  activities  are presented  net for  financial  reporting
purposes. The electric margin on power trading activities is not significant.

      The Company's regulated subsidiaries have cost adjustment mechanisms which
recognize the majority of the effects of changes in fuel used in generation  and
purchased  power costs and allow  recovery of such costs on a timely  basis (see
Note 4. Regulatory  Matters in Item 1. FINANCIAL  Statements).  PSCo has an ICA,
which allows for a 50%/50% sharing of certain fuel and energy cost increases and
decreases  among  customers and  shareholders.  PSCo  recognized  cost increases
associated with the ICA of  approximately  $5.6 million during the third quarter
1999, compared to the prior year.

      Fuel used in generation  expense  decreased  $9.8 million during the third
quarter of 1999,  as  compared to the same  quarter in 1998,  due  primarily  to
reduced  generation  and lower coal costs at SPS. This decrease in coal costs is
primarily  due to  negotiations  with  a new  supplier  in  mid-1998  and  lower
transportation costs.

      Purchased  power expense  decreased $59.5 million during the third quarter
of 1999,  as  compared  to the same  quarter in 1998,  primarily  due to a lower
volume of non-firm purchases related to wholesale marketing.

Gas Operations

      The  following  table details the change in gas revenues and gas purchased
for resale for the third  quarter of 1999 as compared to the same period in 1998
(thousands of dollars).

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

Revenues from gas sales (including unbilled revenues).     $(9,200)
Gas purchased for resale..............................     (12,474)
                                                           -------
 Net increase in gas sales margin.....................       3,274
Transportation revenues...............................         763
                                                           -------
 Increase in net gas margin...........................     $ 4,037
                                                           =======

      The following table compares gas Dth deliveries by major customer  classes
for the third quarter of 1999 and 1998.
                                      Millions of Dth Deliveries
                                                1999  1998    % Change *
                                                ----  ----    ----------
Residential................................      7.3   6.6      11.2%
Commercial.................................      4.1   4.1       0.4
                                               ----- -----
  Total sales..............................     11.4  10.7       7.1
Transportation.............................     28.1  25.8       8.8
                                               ----- -----
  Total....................................     39.5  36.5       8.3
                                               ===== =====
Non-regulated gas marketing and trading....     61.5  16.4       **
                                               ===== =====

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

      Gas sales margin increased during the third quarter of 1999, when compared
to the third  quarter  of 1998,  primarily  due to higher  retail  sales at PSCo
resulting  from  customer  growth of  approximately  3.4% and  higher  gas rates
effective July 1, 1999, resulting from PSCo's 1998 rate case (approximately $1.3
million).  Although

                                       42
<PAGE>

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

      Gas transportation  revenues  increased  approximately $0.8 million during
the third quarter of 1999, when compared to the third quarter of 1998, primarily
due to higher deliveries at PSCo.

      PSCo and  Cheyenne  have in place GCA  mechanisms  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 cost on a
timely  basis.  As a result,  the  changes  in  revenues  associated  with these
mechanisms during the third quarter of 1999, as compared to the third quarter of
1998, 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 $7.1 million primarily
due to an increase in revenue from energy  management and  consulting  services.
Corresponding increases in other operating and maintenance expenses-nonregulated
resulted from these activities.

      Equity  earnings from  Yorkshire  Power  decreased  $6.6 million over 1998
primarily  due to lower  operating  earnings in 1999 which were  impacted by the
removal of "pass  through"  energy  cost  recovery  mechanisms,  higher per unit
energy costs in the summer months with lower sales and continued competition for
customers  (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 $10.5 million
from the continued deployment of cost saving-programs  instituted as part of the
PSCo/SPS Merger. Other operating and maintenance expense-non-regulated increased
$3.0 million primarily due to increased costs in providing energy management and
consulting services.

      Depreciation and amortization expense increased $5.3 million primarily due
to higher depreciation expense from property additions.

      Taxes other than income taxes decreased  approximately $3.1 million due to
a $7.0  million  refund of  business  and  personal  property  taxes in Colorado
offset,  in part,  by higher  utility  property tax accruals  resulting  from an
increase in plant investment and higher valuation rates.

      Income taxes increased $7.8 million during the third quarter of 1999, when
compared to the same quarter in 1998, primarily due to higher pre-tax income.

Nine  Months  Ended  September  30, 1999  Compared  to the Nine  Months  Ended
September 30, 1998

Earnings

      Earnings  per share  (basic  and  diluted)  were  $2.16 for the first nine
months of 1999 as compared to $2.10 per share  (basic and diluted) for the first
nine months of 1998.  The increase in earnings  were  primarily  attributed to a
higher  electric  margin   resulting  from  customer  growth  and  an  increased
contribution from the Company's investment in Yorkshire Power.


                                       43
<PAGE>


Electric Operations

      The following table details the change in electric  operating revenues and
energy costs for the first nine months of 1999 as compared to the same period in
1998 (thousands of dollars).
                                                      Increase (Decrease)
                                                      -------------------
Electric operating revenues:
Retail................................................   $ (39,608)
Wholesale.............................................    (110,081)
Other (including unbilled revenues)...................      65,202
                                                           -------
  Total revenues......................................     (84,487)
Fuel used in generation...............................     (35,337)
Purchased power.......................................     (72,606)
                                                           -------
  Net increase in electric margin.....................     $23,456
                                                           =======

      The following table compares  electric Kwh sales by major customer classes
for the first nine months of 1999 and 1998.

                                              Millions of Kwh Sales
                                                 1999       1998   % Change *
                                                 ----       ----   ----------
Residential................................      7,903     7,781      1.6%
Commercial and Industrial..................     20,991    20,849      0.7
Public Authority...........................        587       625     (6.0)
                                                 -----     -----
  Total Retail.............................     29,481    29,255      0.8
Wholesale..................................     10,033    11,623    (13.7)
                                                ------    ------
Total......................................     39,514    40,878     (3.3)
                                                ======    ======

Power marketing and trading................      7,500     2,269     **
                                                 =====     =====

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

      Electric margin increased $23.5 million or approximately 2.3% in the first
nine months of 1999,  when  compared  to the first nine  months of 1998,  due to
higher  retail  sales  resulting  primarily  from  overall  customer  growth  of
approximately  2.0%.  Retail revenues  decreased  despite the slight increase in
sales due to lower  revenues  related to the  recovery of fuel costs.  Wholesale
revenues  decreased due to lower non-firm sales, but the margin on such sales is
minimal.  Electric sales growth for 1999 was negatively  impacted by mild spring
and early summer weather. Electric sales for 1998 were favorably impacted by hot
summer  weather.  Comparison of retail revenues was also impacted by an SPS 1985
FERC rate case settlement which increased margin  approximately  $7.7 million in
1998 and an increase in PSCo's  provisions  for  estimated  customer  refunds in
connection  with  the  earnings  sharing  in  excess  of 11%  return  on  equity
(approximately $4.0 million) during 1999.

      Fuel used in generation  expense  decreased $35.3 million during the first
nine months of 1999, as compared to 1998,  primarily  due to reduced  generation
levels at SPS and lower coal and gas costs at SPS.  The lower coal costs are due
to a  reduction  in  transportation  costs,  while the  decrease in gas costs is
attributable to lower per-unit gas prices.

      Purchased  power expense  decreased  $72.6  million  during the first nine
months of 1999, as compared to 1998, primarily due to a lower volume of non-firm
purchases related to wholesale marketing activities. This decrease was partially
offset by an  increase  in  purchased  power  expense at SPS  resulting  from an
increase in quantity of power purchased and higher capacity charges.


                                       44
<PAGE>

Gas Operations

      The  following  table details the change in gas revenues and gas purchased
for resale for the first nine  months of 1999 as  compared to the same period in
1998 (thousands of dollars).

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

Revenues from gas sales (including unbilled revenues).     $(10,682)
Gas purchased for resale..............................       (8,149)
                                                           --------
 Net decrease in gas sales margin.....................       (2,533)
Transportation revenues...............................        2,769
                                                           --------
 Increase in net gas margin...........................     $    236
                                                           ========

      The following table compares gas Dth deliveries by major customer  classes
for the first nine months of 1999 and 1998.
                                     Millions of Dth Deliveries
                                                1999  1998    % Change *
                                                ----  ----    ----------
Residential................................     65.4  65.2       0.5%
Commercial.................................     31.5  32.8      (4.0)
                                               ----- -----
  Total Sales..............................     96.9  98.0      (1.0)
Transportation.............................     85.0  80.6       5.4
                                               ----- -----
  Total....................................    181.9 178.6       1.9
                                               ===== =====
Non-regulated gas marketing and trading ...    141.6  48.2       **
                                               ===== =====

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

      Gas sales margin  decreased  $2.5 million  during the first nine months of
1999, when compared to the first nine months of 1998. Lower retail sales at PSCo
resulted  from the  effects  of mild  winter  weather  in 1999,  despite  a 3.4%
increase in  customers  and an increase in PSCo's gas rates,  effective  July 1,
1999 due from the 1998 gas rate case.  Although  non-regulated gas marketing and
trading  sales  increased  significantly,  the  margin on such  sales  decreased
slightly when compared to the prior year.

      Gas transportation  revenues  increased  approximately $2.8 million during
the first  nine  months of 1999,  when  compared  with the same  period in 1998,
primarily due to higher deliveries at PSCo. The increase in transport deliveries
continues  to be impacted by the  shifting of various  commercial  customers  to
transport customers.

Other Operating Revenues and Equity in Earnings of Unconsolidated Subsidiaries

      Other operating  revenues increased slightly during 1999, when compared to
the prior year.  An increase in revenue from energy  management  and  consulting
services was offset, in part, by lower development fee income from non-regulated
independent power projects.

      Equity  in  earnings   of   Yorkshire   Power  and  other   unconsolidated
subsidiaries  increased  $8.8  million  primarily  due to higher  earnings  from
Yorkshire  Power.  NCI's  equity in earnings of  Yorkshire  Power  increased  by
approximately  $12 million for the first nine months of 1999,  when  compared to
the same period in 1998,  primarily due to Yorkshire Power's 1998 recognition of
an impairment of its investment in a U.K.  telecommunications company offset, in
part, by an unrelated tax adjustment. The net effect of these items reduced 1998
earnings   approximately  $16.6  million.   Additionally,   equity  losses  from
independent power projects reduced earnings during 1999.

                                       45
<PAGE>

      Miscellaneous  income and deductions-net  decreased primarily due to delay
damage penalties  incurred in development of certain  independent power projects
by non-regulated subsidiaries.

Non-Fuel Operating Expenses and Other Income and Deductions

      Other operating and maintenance  expense-regulated decreased $12.8 million
from the continued deployment of cost saving-programs  instituted as part of the
PSCo/SPS Merger. Other operating and maintenance  expense-nonregulated increased
$10.1 million  primarily due to increased  operating cost due to the acquisition
of  Planergy,  effective  April 1, 1998 and higher  costs  incurred in providing
energy management and consulting services.

      Depreciation and amortization  expense  increased $15.2 million  primarily
due to higher depreciation expense from property additions.

      Taxes other than income taxes increased  approximately $6.1 million due to
higher  utility  property  tax  accruals  as a result  of an  increase  in plant
investment and higher valuation rates offset,  in part, by a $7.0 million refund
of business and personal property taxes in Colorado.

      Interest  charges and preferred  dividends of subsidiaries  increased $6.7
million  during 1999 as compared  with the same period in 1998.  The increase is
primarily  attributable  to higher average amounts of debt  outstanding  used to
finance  capital  expenditures.  Additionally,  in May 1998,  PSCo  issued  $194
million of Trust Preferred  Originated Preferred  Securities.  The proceeds were
used to redeem  all of  PSCo's  outstanding  preferred  stock  (totaling  $181.8
million)  in June  1998  (see  Note 7.  PSCo  Obligated  Mandatorily  Redeemable
Preferred Securities of Subsidiary Trust Holding Solely Subordinated  Debentures
in Item 1. FINANCIAL STATEMENTS).

      Income taxes  declined $11.0 million during the first nine months of 1999,
when compared to the same quarter in 1998, primarily due to lower pre-tax income
(before  equity  earnings of Yorkshire  Power),  the  recognition  of additional
Colorado  state tax credits and the  recognition  of the favorable tax impact of
certain  prior year PSCo  severance  costs that were  previously  recognized  as
non-deductible.

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 1998  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, 1998 in the 1998 Annual Report on Form 10-K.

Commitments and Contingencies

Year 2000 Issue

      The Y2K issue is a result of a universal programming standard that records
dates as six  digits,  e.g.,  mm/dd/yy,  using  only the last two digits for the
year. Any automated system software or firmware that uses two-digit fields could
understand  the year 2000 as the year 1900 if the issue is not  corrected.  This
situation  is not  limited to  computers;  it has the  potential  to affect many
systems,  components and devices,  which have embedded computer chips, which may
be date  sensitive.  The Y2K issue  could  result in a major  system  failure or
miscalculations  and  does  impact  many  NCE  systems  considered  critical  or
important to the  Company's  business  operations.  Systems  posing the greatest
business risks to the Company include power generation and distribution systems,
telecommunications  systems,  energy trading  systems and billing  systems.  The
Company is  correcting  all


                                       46
<PAGE>

potential Y2K failure  points  identified in its critical  automated  systems to
maintain service to its customers and to mitigate legal and financial risks.

      In 1997,  the Company  established  the Y2K Program  Office to oversee all
corporate-wide  Y2K  initiatives.   These  initiatives  encompass  all  computer
software,  embedded systems, as well as contingency planning.  Teams of internal
and external  specialists  were  established  to  inventory  and assess and test
critical  computer programs and automated  operational  systems and modify those
that  may  not be  Y2K  compliant.  The  inventory  and  assessment  phases  for
information  technology  ("IT") systems were completed in 1998.  Remediation and
testing  phases for all critical IT systems were completed by June 30, 1999. For
critical non-IT systems,  which exist primarily in the generation,  transmission
and distribution areas of the business, the inventory,  assessment,  remediation
and testing  phases were also  completed by June 30, 1999. NCE has achieved "Y2K
Ready" status for all  mission-critical  electrical  generating and transmission
facilities.  Readiness was accomplished by June 30, 1999, in accordance with the
guidelines  established  by the  North  American  Electric  Reliability  Council
("NERC").  NCE is a  participant  in the NERC Y2K Program  that has  established
reporting criteria and milestone dates for electric utilities. The final step of
this program was the submittal of a letter to the president of NERC,  certifying
that the company has met the NERC Y2K goal. NCE submitted its Y2K  certification
letter, without exceptions, with its June 1999 NERC report. In October 1999, NCE
successfully completed an external review of NCE's Y2K program by an independent
third  party.  The review  criteria  followed by the  external  review team were
developed for the  independent  verification  and validation  study that NERC is
conducting for the DOE.

      The Company  has  identified  third  parties,  with which it has  material
business relationships including  interconnected  utilities,  telecommunications
service  providers,  fuel  and  water  suppliers,  equipment  suppliers,  leased
facilities  and  financial  institutions.  Subject  matter  experts,  along with
functional managers,  continue to evaluate the current list of third parties and
have ongoing discussions with these and other critical suppliers about their Y2K
readiness and contingency planning efforts.

      The Company  currently expects to incur costs of approximately $17 million
(approximately  $13  million  has been  spent  through  September  30,  1999) in
operating and capital expenditures to modify its computer software, hardware and
other  automated  systems used in  operations  enabling  proper data  processing
relating to the year 2000 and beyond.  The Company has spent  approximately  $18
million in operating and capital expenditures for the accelerated replacement of
certain  non-compliant  IT systems.  PSCo and SPS have  incurred the majority of
these costs.  The table below details the actual costs incurred  during 1998 and
prior periods; the actual costs incurred through the nine months ended September
30, 1999;  and the estimated  costs to be incurred  during the remainder of 1999
and the first quarter of 2000. A significant  portion of the remaining  costs to
be  incurred  consists  of  finalizing  remaining  work on nonmission-critical
systems, testing, project management and contingency planning.

                                        Actual     Remaining        Estimated
                       Actual Costs     Costs    Estimated Costs   Total Project
                       1998 and Prior   1999     to be Incurred      Costs
                       --------------   ----     --------------      -----
                                            (in millions)

Operating expenses..        $8.0        $3.9        $3.0              $14.9
Capital for automated
     system components       0.7         0.6         0.3                1.6
IT replacement projects:
     Operating......         0.2         0.6         0.1                0.9
     Capital........         6.4        10.9           -               17.3
                            ----        ----        ----              -----
       Total........       $15.3       $16.0        $3.4              $34.7
                           =====       =====        ====              =====

      Yorkshire Power has also undertaken  activities to address Y2K issues. The
estimated  proportionate share of Yorkshire's incremental Y2K costs (costs which
would not have been  required in the normal  course of

                                       47
<PAGE>

business)  that will flow through to the Company's  earnings as a result of such
activities is not expected to have a material impact on the financial  condition
or results of operations of the Company.

      The most  reasonably  likely  worst  case  scenario  resulting  during Y2K
critical  dates is a loss of  production  capacity from certain of the Company's
generating units, along with loss of a portion of the communication  system that
is critical to generation and distribution  control.  If this were to occur, the
Company's  operating  utilities  may be  required  to  "island"  (separate  from
neighboring  interconnected utilities) their generation and distribution systems
in their service  territories.  As part of this  scenario,  difficulty  could be
encountered with the restart of generating  units. The overall blackout recovery
plan for NCE is designed so that this most reasonably likely worst case scenario
would be addressed and electricity  restored.  Critical  components of this plan
have been and continue to be tested to provide  assurance  that the Company will
be prepared  for risks which could  result from the Y2K  millennium  change.  In
September  1999,  PSCo and SPS  successfully  participated  in an  inter-control
center  drill  involving   utilities  of  the  Rocky  Mountain  Power  Area  and
Southwestern  Power Pool respectively,  simulating  islanding and restoration of
generation facilities.

      The Company has substantially  completed all major Y2K initiatives.  Based
on the results of all testing completed to date,  management does not anticipate
any  significant  Y2K related  events and,  accordingly,  does not believe  such
matters will have a material adverse impact on the financial  position,  results
of operations or cash flows of the Company or its subsidiaries.

Common Stock Dividend

      The Board of  Directors  approved  a $0.58 per share  dividend  payable to
shareholders  of the  Company  for the third  quarter  of 1999 and $1.74 for the
year-to-date.  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 - Nine Months Ended September 30
                                                1999      1998     Decrease
                                                ----      ----     --------

Net cash provided by operating
  activities (in millions) ............       $361.1     $503.0    $(141.9)

      Cash  provided by  operating  activities  decreased  during the first nine
months of 1999,  when compared to the same period in 1998,  primarily due to the
cash  proceeds,  received  in  1998 by SPS and a  non-regulated  subsidiary,  of
approximately $67 million for the recovery of deferred costs and income from the
investment in a non-regulated  energy development project and the net changes in
the recovery of purchased gas and electric energy costs.

                                               1999       1998     Increase
                                               ----       ----     --------
Net cash used in investing
  activities (in millions) ............       $(462.0)   $(419.4)  $(42.6)

      Cash used in investing  activities increased during 1999, when compared to
1998, primarily due to an increase in the level of construction expenditures.

                                               1999      1998     Increase
                                               ----      ----     --------
Net cash provided by (used in) financing
   activities (in millions) ...........       $84.7      $(85.3)   $170.0

     Cash provided by financing  activities increased during 1999, when compared
to 1998,  primarily due to higher net proceeds from debt financing activities in
1999.  During the first quarter of 1999,  PSCo refinanced  approximately  $48.75
million to take advantage of lower interest rates and SPS issued $100 million of
senior notes used  initially for the repayment of short-term  debt.  PSCo issued
$200 million of long-term debt in July 1999, the

                                       48
<PAGE>

proceeds of which were used for general  corporate  purposes.  During 1998, PSCo
issued  $250  million  of  long-term  debt in April 1998 which was used to repay
short-term  and other debt and in May 1998,  PSCo issued  $194  million of Trust
Originated Preferred Securities the proceeds of which were used to redeem all of
PSCo's  outstanding  preferred stock (totaling  $181.8 million) on June 10, 1998
(see Note 7. Obligated Mandatorily Redeemable Preferred Securities of Subsidiary
Trust Holding Soley Subordinated Debentures in Item 1. FINANCIAL STATEMENTS).

Financing Activities

Long-Term Debt

      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 and Compensating Bank Balances

      During the second  quarter of 1999,  PSCo entered into a credit  facility,
which  provides  for $300  million in  committed  lines of credit,  replacing an
existing $150 million  credit  facility.  The credit  facility  expires June 23,
2000.

      During the first quarter of 1999, SPS extended its $200 million  committed
line of credit until  February 25, 2000. On November 1, 1999, the NMPRC approved
SPS's request to increase its short-term debt  authority by $100 million to $300
million.  NCE is currently  negotiating  a $100 million  credit  facility.  This
facility will be in addition to NCE's $225 million credit facility which expires
August 11, 2002.

Electric Utility Industry

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

New Mexico

      On April 8, 1999,  New Mexico enacted the Electric  Utility  Restructuring
Act of 1999, which allows customer choice for residential,  small commercial and
educational customers beginning January 1, 2001. All remaining customers will be
allowed customer choice on January 1, 2002. Customers of a municipal utility and
customers of a distribution

                                       49
<PAGE>

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  quantified by the NMPRC,  which has not yet been  determined.
Transition costs must be approved by the NMPRC prior to being recovered  through
a  non-by-passable  wires  charge,  which must be included in a transition  plan
filing.  All public  electric  utilities  operating  in New  Mexico  must file a
transition  plan with the NMPRC by March 1, 2000.  Before  January 1, 2001,  SPS
must  separate  its utility  operations  into at least two  segments:  a) energy
generation  services and b)  transmission  and  distribution  (including  retail
operations)  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 will be  prohibited  from  providing  unregulated
services.

Texas

      On June 18,  1999,  an electric  utility  restructuring  act  ("SB-7") was
passed in Texas,  which  allows  for 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;  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 pilot  projects
which begin for all utilities on June 1, 2001 for 5% of the  utility's  combined
load of all customer classes.

      As  part  of the  above  Texas  legislation,  SPS is  required  to  file a
separation  plan on January 10, 2000, for the unbundling of business  activities
relating  to 1)  generation,  2)  transmission  and  distribution  and 3) retail
services.  The plan is to be  implemented  on  January  1,  2002.  Also,  SPS is
required  to file a rate  case  on  April  1,  2000  to set  the  rates  for the
transmission  and  distribution   services,   which  are  to  be  unbundled  and
implemented  on January 1, 2002.  The Company is evaluating  the effect of these
filings on SPS.

      The legislation specifically addresses competition in the Texas Panhandle,
where SPS operates,  recognizing  that certain  transmission  constraints  exist
within the region that 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
stranded costs, must direct any excess earnings indicated in the annual earnings
tests  during  the  period  January  1,  1999  through   December  31,  2001  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).

      Additionally,  the Texas legislation  requires that no generation  company
can own and  control  more  than 20% of the  installed  capacity  located  in or
capable of delivering electricity to a power region.  Utilities owning more than
400 Mw must  auction  entitlements  to at least 15% of the  utility's  installed
generation  capacity  used for  providing  electric  services  to  Texas  retail
customers.  The  capacity  entitlement  auctions  are to continue for 5 years or
until 40% of the utility's  residential and small  commercial  customers  served
prior to the start date of competition are served by  non-affiliated  companies.
The legislation includes several possible remedies to market power abuses. These
provisions  are  not   immediately   applicable  to  SPS  due  to  the  existing
transmission constraints and market power issues in the Panhandle region.

      In connection  with the NCE/NSP Merger approval  proceedings,  the Company
filed supplemental testimony with the PUCT in October 1999 outlining its plan to
address the various  provisions of SB-7. In general,  the plan  presented by the
Company  provides  for  the  transfer  of  ownership  or  control  of  595 Mw of
generating  capacity (either through capacity  entitlement auction or divesting)
to other  competitors  and the  addition  of  transmission  lines to  import  an
additional 400 Mw from other  geographic  regions.  The major components of this
plan include the following:

                                       50
<PAGE>

- -  auction  entitlements (409 Mw or 15 percent of installed generation capacity)
   to capacity  owned and  controlled by SPS, that is dedicated to serving Texas
   retail  customers,  by January 1, 2002. The Company would continue to own and
   operate the capacity,  but  competitors  would have the right to dispatch the
   power.
- -  divest 186 Mw of SPS-area  generating capacity by January 1, 2002 in order to
   further reduce market dominance,
- -  separate SPS existing  competitive  functions  beginning  September 1, 2000,
- -  unbundle SPS into three  separate companies beginning January 1, 2002, and
- -  implement a pilot program for retail access for at least 5 percent of its
   Texas  retail  load in June 2001 and to expand  the pilot  program  to 20% of
   customer load in 2002.  Most of the other Texas  utilities  will be moving to
   full customer choice in 2002.

The SPS plan is  designed  to address  the market  power  issues  related to the
deregulation legislation and would promote further competition before the end of
2006 by allowing only  competitors to build new plants in the region between now
and then,  by adding  even more  transmission  lines,  and  possibly  by further
divesting some generation. Hearings on the NCE/NSP Merger are scheduled to begin
in late February,  2000 and the final order is expected in the second quarter of
2000.

Financial Reporting Considerations

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

Accounting Pronouncements Issued But Not Yet Effective

      In June  1998,  the FASB  issued  SFAS  133,  "Accounting  for  Derivative
Instruments and Hedging Activities." This statement requires companies to record
derivatives  on the balance  sheet as assets and  liabilities,  measured at fair
value. Gains or losses resulting from changes in the values of those derivatives
would be accounted  for  depending on the use of the  derivative  and whether it
qualifies  for hedge  accounting.  In July 1999,  the FASB delayed the effective
date for one year, to fiscal years beginning after June 15, 2000. The Company is
currently  evaluating the potential impact of this accounting  standard and will
adopt the standard as required by January 1, 2001.

                                       51
<PAGE>

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

Three  Months  Ended  September  30, 1999  Compared to the Three  Months Ended
September 30, 1998

Earnings Available for Common Stock

      Earnings  were $49.7 million for the third quarter of 1999, as compared to
$44.0  million for the third  quarter of 1998,  primarily  due to an increase in
electric  margin  resulting from strong  customer growth of 2.6%, an increase in
gas margin  resulting from customer growth and higher rates, and lower operating
and maintenance expenses.

Electric Operations

      The following table details the change in electric  operating revenues and
energy costs for the three months ended  September  30, 1999, as compared to the
same period in 1998 (in thousands of dollars).

                                              Increase (Decrease)
                                              -------------------
Electric operating revenues:
 Retail.......................................    $17,553
 Wholesale....................................    (90,727)
 Other (including unbilled revenues)..........      7,845
                                                  -------
  Total revenues..............................    (65,329)
Fuel used in generation.......................       (436)
Purchased power...............................    (68,848)
                                                  -------
  Net increase in electric margin.............    $ 3,955
                                                  =======

       The following table compares electric Kwh sales by major customer classes
for the three months ended September 30, 1999 and 1998.

                                     Millions of Kwh Sales
                                        1999     1998      % Change *
                                        ----     ----      ----------
Residential .....................       1,905    1,779        7.1%
Commercial and Industrial .......       4,459    4,278        4.2
Public Authority ................          54       54       (0.1)
                                       ------   ------
  Total Retail...................       6,418    6,111        5.0
Wholesale **.....................       1,063    2,389      (55.5)
                                       ------   ------
Total............................       7,481    8,500      (12.0)
                                       ======   ======

*   Percentages are calculated using unrounded amounts
** Excludes power trading activities

      Electric  margin  increased in the third quarter of 1999, when compared to
the  third  quarter  of  1998,  primarily  due to  higher  retail  sales of 5.0%
resulting  primarily  from customer  growth of  approximately  2.6%.  The higher
margin was offset, in part, by the negative impact of cost sharing under the ICA
(approximately $5.6 million). The ICA is a cost adjustment mechanism that allows
for a 50%/50%  sharing of certain fuel and energy cost  increases  and decreases
among customers and shareholders.  Provisions for estimated  customer refunds in
connection with the earnings sharing in excess of 11% return on equity increased
approximately  $2.9 million in 1999 (see Note 4.  Regulatory  Matters in Item 1.
FINANCIAL STATEMENTS). The decrease in the wholesale revenues and sales resulted
primarily  from lower  non-firm  sales in 1999,  however,  overall power trading
activities  increased in 1999. The revenues and purchased  energy costs for such
activities  are  presented net for financial  reporting  purposes.  The electric
margin on power trading activities is not significant.

                                       52
<PAGE>

      Fuel used in  generation  expense  decreased  approximately  $0.4  million
during  the third  quarter of 1999,  as  compared  to the same  quarter in 1998,
primarily due to lower  generation  levels at PSCo's power plants resulting from
the milder summer temperatures.

      Purchased  power expense  decreased $68.8 million during the third quarter
of 1999,  as compared to the same  quarter in 1998,  primarily  due to the lower
non-firm power purchases  offset,  in part, by higher firm power purchases under
new contracts.

Gas Operations

      The following  table details the change in revenues from gas sales and gas
purchased  for resale for the third  quarter of 1999,  as  compared  to the same
period in 1998 (in thousands of dollars).

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

Revenues from gas sales (including unbilled revenues)        $ 7,092
Gas purchased for resale........................               1,972
                                                             -------
  Net increase in gas sales margin..............               5,120
Transportation revenues.........................                 744
                                                             -------
  Increase in net gas margin....................             $ 5,864
                                                             =======

      The following table compares gas Dth deliveries by major customer  classes
for the third quarter of 1999 and 1998.
                                    Millions of Dth Deliveries
                                         1999      1998     % Change *
                                         ----      ----     ----------
Residential...................             6.7       6.4      4.6%
Commercial....................             3.9       3.8      1.6
                                         -----     -----
  Total sales.................            10.6      10.2      3.5
Transportation................            21.0      22.2     (5.7)
                                         -----     -----
  Total.......................            31.6      32.4     (2.8)
                                         =====     =====

*  Percentages are calculated using unrounded amounts

      Gas sales margin increased during the third quarter of 1999, when compared
to the third  quarter of 1998,  primarily  due to a 3.5%  increase in retail gas
sales resulting from customer  growth of  approximately  3.4%. In addition,  gas
rates  increased,  effective July 1, 1999, as a result of the 1998 gas rate case
resulting in higher revenues of approximately $1.1 million.

      Gas  transportation  revenues  increased  $0.7  million  during  the third
quarter of 1999,  compared to the third  quarter of 1998,  primarily  due to the
impact of the 1998 gas rate case,  resulting in higher revenues of approximately
$0.2 million.

      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
third  quarter of 1999,  as  compared to the third  quarter of 1998,  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  $6.4
million  primarily due to lower  administrative  and general costs,  including a
decrease in pension costs.

                                       53
<PAGE>

      Depreciation  and  amortization  increased  $5.0 million  during the third
quarter of 1999, as compared to the third quarter of 1998,  primarily due to the
depreciation of property additions.

      Taxes other than income taxes decreased  approximately $3.8 million during
the third quarter of 1999,  as compared to the third quarter of 1998,  primarily
due to a $7 million  refund of business  and  personal  property tax in Colorado
offset,  in part, by higher property tax accruals  resulting from an increase in
plant investment and higher valuation rates.

      Income taxes increased approximately $1.4 million during the third quarter
of 1999,  as  compared  to the third  quarter of 1998,  primarily  due to higher
pre-tax  income,  despite  the  recognition  of  additional  Colorado  state tax
credits.

      Other  income  and  deductions  decreased  $3.4  million  during the third
quarter of 1999,  as compared  to the third  quarter of 1998,  primarily  due to
higher  non-utility  operating  expenses  attributed  to affiliate  billings and
customer rebates.

      Interest  charges  increased  approximately  $4.6 million during the third
quarter of 1999,  as  compared  to the third  quarter of 1998.  The  increase is
primarily  attributable  to costs to  finance  capital  expenditures,  including
higher  interest  costs on short-term  debt.  Additionally,  in July 1999,  PSCo
issued $200 million of 6 7/8% Series A Senior Notes, due in July 2009.

Nine  Months  Ended  September  30, 1999  Compared  to the Nine  Months  Ended
September 30, 1998

Earnings Available for Common Stock

      Earnings  were  $150.5  million  for the first  nine  months  of 1999,  as
compared to $138.5  million for the first nine months of 1998.  The  significant
increase is primarily  attributed  to an increase in electric  margin  resulting
from customer growth of 2.6% and lower operating and maintenance expense offset,
in part, by higher interest costs.

Electric Operations

      The following table details the change in electric  operating revenues and
energy costs for the nine months ended  September  30, 1999,  as compared to the
same period in 1998 (in thousands of dollars).

                                              Increase (Decrease)
                                              -------------------
Electric operating revenues:
 Retail.......................................    $27,683
 Wholesale....................................    (92,253)
 Other (including unbilled revenues)..........      8,867
                                                  -------
  Total revenues..............................    (55,703)
Fuel used in generation.......................      6,128
Purchased power...............................    (90,589)
                                                  -------
  Net increase in electric margin.............    $28,758
                                                  =======


                                       54
<PAGE>


      The following table compares  electric Kwh sales by major customer classes
for the nine months ended September 30, 1999 and 1998.
                                    Millions of Kwh Sales
                                        1999     1998      % Change *
                                        ----     ----      ----------
Residential .....................       5,403    5,135        5.2%
Commercial and Industrial .......      12,180   11,754        3.6
Public Authority ................         162      140       15.2
                                       ------   ------
  Total Retail...................      17,745   17,029        4.2
Wholesale **.....................       3,530    5,291      (33.3)
                                       ------   ------
Total............................      21,275   22,320       (4.7)
                                       ======   ======

*    Percentages are calculated using unrounded amounts
**  Excludes power trading activities

      Electric margin increased $28.8 million or  approximately  4.6% during the
first nine months of 1999,  when compared to the same period in 1998,  primarily
due to higher retail sales of 4.2% resulting  primarily from customer  growth of
approximately  2.6% and increased  usage by existing  customers.  Provisions for
estimated  customer refunds in connection with the earnings sharing in excess of
11% return on equity were $11.3 million in 1999 compared to $7.3 million in 1998
(see Note 4. Regulatory Matters in Item 1. FINANCIAL  STATEMENTS).  The decrease
in the wholesale revenues and sales resulted primarily from lower non-firm sales
in 1999, however,  power trading activities  increased in 1999. The revenues and
purchased  energy costs for such  activities  are  presented  net for  financial
reporting  purposes.  The electric  margin on power  trading  activities  is not
significant.

      Fuel used in  generation  expense  increased  approximately  $6.1  million
during the first nine  months of 1999,  as  compared to the same period in 1998,
primarily  due to  increased  generation  levels at PSCo's power plants to serve
retail customers.

      Purchased  power expense  decreased  $90.6  million  during the first nine
months of 1999,  as compared to the same  period in 1998,  primarily  due to the
lower non-firm power purchases  offset,  in part, by higher firm power purchases
under new contracts.

Gas Operations

      The following  table details the change in revenues from gas sales and gas
purchased  for resale for the first nine months of 1999, as compared to the same
period in 1998 (in thousands of dollars).

                                                         Increase (Decrease)
                                                         -------------------
Revenues from gas sales (including unbilled revenues)        $ 1,468
Gas purchased for resale........................               1,994
                                                             -------
  Net decrease in gas sales margin..............                (526)
Transportation revenues.........................               2,781
                                                             -------
  Increase in net gas margin....................             $ 2,255
                                                             =======

      The following table compares gas Dth deliveries by major customer  classes
for the first nine months of 1999 and 1998.
                                 Millions of Dth Deliveries
                                         1999      1998     % Change *
                                         ----      ----     ----------
Residential...................            63.5      63.3      0.4%
Commercial....................            29.8      31.1     (4.3)
                                       -------  --------
  Total sales.................            93.3      94.4     (1.1)
Transportation................            71.1      68.3      4.2
                                       -------  --------
  Total.......................           164.4     162.7      1.1
                                       =======  ========

*  Percentages are calculated using unrounded amounts

                                       55
<PAGE>

      Gas sales margin decreased  slightly during the first nine months of 1999,
when  compared to the same period in 1998,  primarily  due to a 1.1% decrease in
retail  gas sales  resulting  from  milder  winter  weather,  with  temperatures
approximately 2% warmer than the prior year.

      Gas  transportation  revenues increased $2.8 million during the first nine
months of 1999,  compared  to the same period in 1998,  primarily  due to higher
deliveries. The increase in transport deliveries continues to be impacted by the
shifting of various commercial customers to transport customers.

      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 nine
months ended  September  30, 1999,  as compared to the same period in 1998,  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.
The decrease in the quantity of gas  purchased  in 1999 lowered  costs,  but was
offset by the recovery of costs previously deferred through the GCA.

Non-Fuel Operating Expenses and Other Income and Deductions

      Other  operating and maintenance  expenses  decreased  approximately  $6.4
million  primarily due to lower  administrative  and general costs,  including a
decrease in pension costs.

      Depreciation  and  amortization  increased  $12.7 million during the first
nine months of 1999,  as compared to the same period in 1998,  primarily  due to
the depreciation of property additions.

      Income taxes  decreased  approximately  $5.0 million during the first nine
months of 1999,  as compared to the same  period in 1998,  primarily  due to the
recognition of additional  Colorado state tax credits and the recognition of the
favorable tax impact of deducting  certain prior year severance  costs that were
previously recognized as non-deductible.

      Other income and  deductions  decreased $6.7 million during the first nine
months of 1999, as compared to the first nine months of 1998. On March 31, 1998,
NCI and its subsidiaries  were  transferred  through the sale by PSCo of all the
outstanding  common  stock  of NCI  at  net  book  value  (approximately  $292.6
million),  to NC  Enterprises,  an  intermediate  holding  company  of NCE,  and
received as  consideration  a promissory  note from NC Enterprises  (see Note 3.
Investment in Yorkshire Power in Item 1. FINANCIAL  STATEMENTS).  The first nine
months of 1999 include  approximately  $10.1  million of interest  income on the
promissory note,  excluding income taxes,  compared to $10.3 million of interest
income in 1998 and the  recognition of equity  earnings  associated  with PSCo's
investment in Yorkshire Power of approximately $3.4 million in the first quarter
of 1998, prior to the sale. In addition, other non-utility income decreased $3.1
million.

      Interest  charges and dividend  requirements  and  redemption  premiums on
preferred  stock  increased  approximately  $8.5  million  during the first nine
months of 1999,  as compared to the first nine months of 1998.  The  increase is
primarily  attributable  to costs to  finance  capital  expenditures,  including
higher  interest  costs on long-term debt resulting from the April 1998 issuance
of $250  million  of  long-term  debt and July 1999  issuance  of $200  million.
Additionally,  in  May  1998,  PSCo  issued  $194  million  of  Trust  Preferred
Originated Preferred Securities.  The proceeds were used to redeem all of PSCo's
outstanding  preferred stock (totaling $181.8 million) in June 1998 (see Note 7.
Obligated  Mandatorily  Redeemable  Preferred  Securities of  Subsidiary  Trusts
Holding Solely Subordinated Debentures in Item 1. FINANCIAL STATEMENTS).


                                       56
<PAGE>


Commitments and Contingencies

       See  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.


                                       57
<PAGE>


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

Three  Months  Ended  September  30, 1999  Compared to the Three  Months Ended
September 30, 1998

Earnings Available for Common Stock

      Earnings  available for common stock were $42.5  million  during the third
quarter of 1999 compared to $36.9 million for the same quarter in 1998. Earnings
increased  primarily due to the effects of higher sales and lower  operating and
maintenance costs.

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 three  months ended  September  30,
1999, as compared to the same period in 1998 (thousands of dollars).

                                            Increase (Decrease)
                                            -------------------
     Electric operating revenues:
      Retail..............................        $(36,815)
      Wholesale...........................            (816)
      Other (including unbilled revenues).          43,570
                                                   -------
        Total revenues....................           5,939
     Fuel used in generation..............          (8,954)
     Purchased power......................           8,073
                                                   -------
        Net increase in electric margin...        $  6,820
                                                  ========

      The following table compares  electric Kwh sales by major customer classes
for the three months ended September 30, 1999 and 1998.

                                    Millions of Kwh Sales
                                       1999       1998       % Change*
                                     -------     -----       ---------
      Residential ............          993      1,060         (6.2)%
      Commercial and Industrial       3,025      3,133         (3.5)
      Public Authority .......          149        192        (22.8)
                                      -----      -----
        Total Retail..........        4,167      4,385         (5.0)
      Wholesale...............        3,184      2,800         13.7
                                      -----      -----
      Total...................        7,351      7,185          2.3
                                      =====      =====

* Percentages are calculated using unrounded amounts.

      Electric  operating  revenues  increased  $5.9  million or 2.1% during the
third quarter in 1999,  when compared to the same period in 1998,  primarily due
to customer growth and higher  unbilled  revenue of  approximately  $9.9 million
offset by the effects of lower retail sales of 5%. Although weather in the third
quarter of 1999 was slightly  above normal,  the decrease in Kwh sales  resulted
from the hot weather  occurring  in the third  quarter of 1998,  which served to
increase  loads  in  1998  as  compared  to the  same  period  in  1999  for air
conditioning  and  irrigation.  The  decreases in retail and  wholesale  revenue
relates to lower billed  revenues for the recovery of fuel costs  (approximately
$27 million),  which was offset by an increase of  approximately  $30 million in
deferred fuel revenue included in other electric operating revenues.

      Fuel used in generation  expense decreased $9.0 million or 6.4% during the
third quarter of 1999,  when compared to the same period in 1998,  primarily due
to a 5.8% decrease in generation  levels required to serve

                                       58
<PAGE>

retail customers and lower coal costs for the quarter offset, in part, by higher
gas costs as a result of higher  market  prices.  The  decrease in coal costs is
primarily  due to  negotiations  with  a new  supplier  in  mid-1998  and  lower
transportation costs.

      Purchased  power  increased $8.1 million during the third quarter of 1999,
when compared to the same period in 1998,  due to an increase in capacity  costs
of $6.4  million  related to new  purchase  power  contracts  and an increase in
wholesale  purchases.  SPS generates  substantially all of its power for sale to
its firm retail and wholesale  customers and sells non-firm energy as the market
demands.  Similarly,  SPS will purchase  low-cost non-firm energy when available
and as needed to meet customer requirements.

      SPS has fuel cost  adjustment  mechanisms  which recognize the majority of
the effects of changes in fuel used in generation and purchased  power costs and
allow  recovery  of such costs on a timely  basis.  As a result,  the changes in
revenues associated with these mechanisms during the third quarter of 1999, when
compared to the third  quarter of 1998,  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  decreased $4.3 million or 12.5%
during  the third  quarter  of 1999,  as  compared  to the same  period in 1998,
primarily due to lower  administrative and general expenses and other reductions
resulting from the continued  deployment of cost saving  programs  instituted as
part of the PSCo/SPS Merger offset, in part, by higher maintenance costs.

      Income taxes  increased  $3.3 million during the third quarter of 1999, as
compared  to the same  period  in 1998,  primarily  due to the  effect of higher
pre-tax income.  The effective  income tax rates for the quarter ended September
30, 1999 and 1998 were 37.0% and 37.1%, respectively.

Interest Charges

      Interest charges  increased $1.0 million during the third quarter of 1999,
as compared to the same period in 1998,  primarily due to higher  long-term debt
costs,  resulting  from the  issuance of $100 million of new debt in March 1999.
The proceeds  from the  long-term  debt  issuance  were  initially  used for the
repayment of certain  short-term debt,  pending the retirement of $90 million in
bonds due December 1, 1999, thus lowering other interest expense ($0.7 million).

Nine  Months  Ended  September  30, 1999  Compared  to the Nine  Months  Ended
September 30, 1998

Earnings Available for Common Stock

      Earnings  available  for common stock were $88.8  million  during the nine
months ended September 30, 1999 compared to $92.0 million for the same period in
1998.  Earnings  for 1998 were  favorably  impacted by the hot dry weather and a
FERC rate case settlement.


                                       59
<PAGE>

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 nine months ended September 30,1999,
as compared to the same period in 1998 (thousands of dollars).

                                            Increase (Decrease)
                                            -------------------
     Electric operating revenues:
      Retail..............................        $(70,027)
      Wholesale...........................         (16,752)
      Other (including unbilled revenues).          55,646
                                                    ------
        Total revenues....................         (31,133)
     Fuel used in generation..............         (40,941)
     Purchased power......................          14,862
                                                    ------
        Net decrease in electric margin...        $ (5,054)
                                                  ========

      The following table compares  electric Kwh sales by major customer classes
for the nine months ended September 30, 1999 and 1998.

                                     Millions of Kwh Sales
                                        1999        1998       % Change*
                                     --------     -------      ---------
      Residential ............         2,339       2,490         (6.1)%
      Commercial and Industrial        8,322       8,621         (3.5)
      Public Authority .......           423         481        (12.2)
                                       -----       -----
        Total Retail..........        11,084      11,592         (4.4)
      Wholesale...............         6,503       6,332          2.7
                                       -----       -----
      Total...................        17,587      17,924         (1.9)
                                      ======      ======

* Percentages are calculated using unrounded amounts.

      Electric  operating  revenues  decreased  $31.1 million or 4.2% during the
nine months ended  September 30, 1999, when compared to the same period in 1998,
primarily due to lower retail Kwh sales (4.4%),  lower  revenues  related to the
recovery of fuel costs (totaling approximately $64 million) and the $7.7 million
settlement  for a 1985  FERC  rate  case  settlement  recorded  in 1998.  Higher
unbilled   revenue  of  $27.7  million  and  higher  deferred  fuel  revenue  of
approximately $33 million offset these decreases.  The decrease in Kwh sales was
primarily  the result of the hot dry  weather  which  occurred in the second and
third quarters of 1998 serving to increase air conditioning and irrigation loads
in 1998 and a  decrease  in oil well  pumping  sales in 1999.  A portion  of the
decrease in Kwh sales  resulted  from a change in the  billing  cycle of various
customers, which is offset by the higher level of unbilled revenues.

      Fuel used in generation  expense  decreased  $40.9 million or 11.7% during
the nine months ended  September  30, 1999,  when compared to the same period in
1998,  primarily  due to lower coal and gas costs for the  current  period and a
4.7%  decrease in  generation  levels  required to serve retail  customers.  The
decrease in coal costs is primarily due to  negotiations  with a new supplier in
mid-1998 and lower transportation  costs. Cost of natural gas used in generation
decreased $4.6 million during the nine months ended September 30, 1999 primarily
due to lower gas purchases due to lower generation.

      Purchased  power  increased  $14.9  million  during the nine months  ended
September 30, 1999, when compared to the same period in 1998, due to an increase
in capacity costs of $9.9 million related to new purchase power contracts and an
increase in wholesale  purchases.  SPS generates  substantially all of its power
for sale to its

                                       60
<PAGE>

firm retail and  wholesale  customers  and sells  non-firm  energy as the market
demands.  Similarly,  SPS will purchase  low-cost non-firm energy when available
and as needed to meet customer requirements.

      SPS has fuel cost  adjustment  mechanisms  which recognize the majority of
the effects of changes in fuel used in generation and purchased  power costs and
allow  recovery  of such costs on a timely  basis.  As a result,  the changes in
revenues associated with these mechanisms during the nine months ended September
30, 1999,  when compared to the nine months ended September 30, 1998, 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 decreased $6.1 million during the
nine months ended  September 30, 1999, when compared to the same period in 1998,
primarily due to lower general and  administrative  expenses,  and the continued
deployment of cost saving  programs  instituted as part of the PSCo/SPS  Merger.
These decreases were offset, in part, by higher maintenance costs.

      Taxes other than  income  taxes  increased  $3.2  million  during the nine
months  ended  September  30,  1999,  as  compared  to the same  period in 1998,
primarily due to higher property and franchise taxes.

      Income taxes decreased $1.8 million during the nine months ended September
30, 1999, as compared to the same period in 1998, primarily due to the effect of
lower pre-tax  income.  The  effective  income tax rate for both the nine months
ending September 30, 1999 and 1998 was 37.3%.

Other Income and Deductions - Net

      Other income and  deductions-net  increased  $1.2 million  during the nine
months  ended  September  30,  1999,  as  compared  to the same  period in 1998,
primarily  due to the  absence  of  PSCo/SPS  Merger  and  business  integration
expenses in 1999 ($1.2 million expensed in 1998).

Interest Charges

      Interest  charges  increased  $2.1  million  during the nine months  ended
September  30, 1999,  as compared to the same period in 1998,  primarily  due to
higher long-term debt costs,  resulting from the issuance of $100 million in new
debt in March of 1999 and a decrease  in the  allowance  for funds  used  during
construction of  approximately  $2.2 million  resulting from lower  construction
activities.  The new  debt  issuance  was  used in part to pay  down  short-term
borrowings, thus lowering other interest expense ($3.3 million).

Commitments and Contingencies

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

Financing Activities

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


                                       61
<PAGE>


                         PART II - OTHER INFORMATION

Item 1.  Legal Proceedings

      Part 1.  See 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 65 herein.
      12(b) Computation of Ratio of Consolidated  Earnings to Consolidated Fixed
            Charges for SPS is set forth at page 66 herein.

      15(a) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 67 herein for NCE.
      15(b) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 68 herein for PSCo.
      15(c) Letter  from  Arthur  Andersen  LLP  regarding   unaudited   interim
            information is set forth at page 69 herein for SPS.

      27(a) Financial  Data  Schedule for NCE as of September  30, 1999.
      27(b) Financial Data Schedule for PSCo as of September 30, 1999.
      27(c) Financial Data Schedule for SPS as of September 30, 1999.

(b) Reports on Form 8-K

The following  report on Form 8-K was filed  since the  beginning  of the third
quarter of 1999.

- -  A report on Form 8-K dated July 13, 1999, was filed by PSCo on July 22,
1999.  The items reported were Item 5. Other Events:  Documents related to
the issuance of $200,000,000 aggregate principal amount on July 16, 1999 of
Series A Senior Notes and Item 7. Financial Statements and Exhibits.


                                       62
<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
15th day of November, 1999.

                                          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 15th day of November, 1999.


                                          PUBLIC SERVICE COMPANY OF COLORADO

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



                     SOUTHWESTERN PUBLIC SERVICE COMPANY
                                  SIGNATURE

      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934,  Southwestern  Public Service Company has duly caused this
report to be signed on its behalf by the undersigned,  thereunto duly authorized
on the 15th day of November, 1999.


                                           SOUTHWESTERN PUBLIC SERVICE COMPANY

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

                                       63
<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 65 herein.

12(b)   Computation of Ratio  of  Consolidated  Earnings to  Consolidated  Fixed
        Charges for SPS is set forth at page 66 herein.

15(a)   Letter from Arthur Andersen LLP regarding unaudited interim information
         is set forth at page 67 herein for NCE.

15(b)   Letter from Arthur Andersen LLP regarding unaudited interim information
        is set forth at page 68 herein for PSCo.

15(c)   Letter from Arthur Andersen LLP regarding unaudited interim information
        is set forth at page 69 herein for SPS.

27(a)   Financial Data Schedule for NCE as of September 30, 1999.

27(b)   Financial Data Schedule for PSCo as of September 30, 1999.

27(c)   Financial Data Schedule for SPS as of September 30, 1999.

*  Previously filed as indicated and incorporated herein by reference.


                                       64
<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)



                                                     Nine Months Ended
                                                      September 30,
                                                      1999       1998
                                                      ----       ----
                                           (Thousands of Dollars, except ratios)

Fixed charges:
   Interest on long-term debt...................    $ 88,890    $ 86,899
   Interest on borrowings against corporate-owned
     life insurance contracts...................      43,342      38,004
   Other interest...............................      19,671      14,967
   Amortization of debt discount and expense
     less premium ..............................       3,331       3,148
   Interest component of rental expense.........       6,720       6,166
   Dividends on PSCo obligated mandatorily
     redeemable preferred securities............      11,400       5,911
                                                      ------      ------

     Total......................................    $173,354    $155,095
                                                    ========    ========

Earnings (before fixed charges and taxes on income):
   Net income...................................    $150,508    $143,820
   Fixed charges as above.......................     173,354     155,095
   Provisions for Federal and state taxes on
    income, net of investment tax credit
    amortization.... ...........................      67,154      72,184
                                                      ------      ------

     Total......................................    $391,016    $371,099
                                                    ========    ========

Ratio of earnings to fixed charges..............        2.26        2.39
                                                      ======      ======

                                       65
<PAGE>



                                                                 EXHIBIT 12(b)

                     SOUTHWESTERN PUBLIC SERVICE COMPANY
                               AND SUBSIDIARIES

                COMPUTATION OF RATIO OF CONSOLIDATED EARNINGS
                        TO CONSOLIDATED FIXED CHARGES

          (not covered by Report of Independent Public Accountants)



                                                     Nine Months Ended
                                                      September 30,
                                                      1999       1998
                                                      ----       ----
                                           (Thousands of Dollars, except ratios)

Fixed charges:
   Interest on long-term debt...................     $ 36,112   $ 32,972
   Other interest...............................        3,989      7,275
   Amortization of debt discount and expense less
     premium ...................................        1,777      1,682
   Interest component of rental expense.........          573        606
   Dividends on SPS obligated mandatorily
     redeemable preferred securities............        5,888      5,888
                                                       ------     ------

     Total......................................     $ 48,339   $ 48,423
                                                     ========   ========

Earnings (before fixed charges and taxes on income):
   Net income...................................     $ 88,760   $ 91,985
   Fixed charges as above.......................       48,339     48,423
   Provisions for Federal and state taxes on
    income, net of investment tax credit
    amortization.... ..........................        52,868     54,709
                                                       ------     ------

     Total......................................     $189,967   $195,117
                                                     ========   ========

Ratio of earnings to fixed charges..............         3.93       4.03
                                                         ====       ====


                                       66
<PAGE>



                                                                 EXHIBIT 15(a)

November 9, 1999


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 (Form 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
September 30, 1999,  which includes our report dated November 9, 1999,  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



                                       67
<PAGE>



                                                                 EXHIBIT 15(b)

November 9, 1999


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  September 30, 1999,
which  includes  our report  dated  November  9, 1999,  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



                                       68
<PAGE>



                                                                 EXHIBIT 15(c)
November 9, 1999


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  September  30, 1999,  which
includes our report dated  November 9, 1999,  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




                                       69
<PAGE>

<TABLE> <S> <C>

<ARTICLE>        UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION EXTRACTED FROM NEW CENTURY
ENERGIES, INC. CONSOLIDATED CONDENSED BALANCE SHEET AS OF SEPTEMBER 30, 1999 AND
CONSOLIDATED  CONDENSED  STATEMENTS OF INCOME AND CASH FLOWS FOR THE NINE MONTHS
ENDED  SEPTEMBER  30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK>            0001004858
<NAME>           New Century Energies, Inc.
<MULTIPLIER>                                                     1,000

<S>                                                   <C>
<PERIOD-TYPE>                                                    9-MOS
<FISCAL-YEAR-END>                                          DEC-31-1998
<PERIOD-END>                                               SEP-30-1999
<BOOK-VALUE>                                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                    6,149,213
<OTHER-PROPERTY-AND-INVEST>                                    443,475
<TOTAL-CURRENT-ASSETS>                                         887,391
<TOTAL-DEFERRED-CHARGES>                                       620,152
<OTHER-ASSETS>                                                       0
<TOTAL-ASSETS>                                               8,100,231
<COMMON>                                                       115,534
<CAPITAL-SURPLUS-PAID-IN>                                    1,790,328
<RETAINED-EARNINGS>                                            788,613
<TOTAL-COMMON-STOCKHOLDERS-EQ>                               2,699,232
                                          294,000
                                                          0
<LONG-TERM-DEBT-NET>                                         2,237,388
<SHORT-TERM-NOTES>                                              19,400
<LONG-TERM-NOTES-PAYABLE>                                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                                 501,691
<LONG-TERM-DEBT-CURRENT-PORT>                                  332,145
                                            0
<CAPITAL-LEASE-OBLIGATIONS>                                     34,681
<LEASES-CURRENT>                                                 1,495
<OTHER-ITEMS-CAPITAL-AND-LIAB>                               1,980,199
<TOT-CAPITALIZATION-AND-LIAB>                                8,100,231
<GROSS-OPERATING-REVENUE>                                    2,528,416
<INCOME-TAX-EXPENSE>                                            98,339
<OTHER-OPERATING-EXPENSES>                                   2,029,625
<TOTAL-OPERATING-EXPENSES>                                   2,029,625
<OPERATING-INCOME-LOSS>                                        498,791
<OTHER-INCOME-NET>                                               9,900
<INCOME-BEFORE-INTEREST-EXPEN>                                 508,691
<TOTAL-INTEREST-EXPENSE>                                       161,890
<NET-INCOME>                                                   248,462
                                          0
<EARNINGS-AVAILABLE-FOR-COMM>                                        0
<COMMON-STOCK-DIVIDENDS>                                       200,526
<TOTAL-INTEREST-ON-BONDS>                                      131,284
<CASH-FLOW-OPERATIONS>                                         374,944
<EPS-BASIC>                                                     2.16
<EPS-DILUTED>                                                     2.16


</TABLE>

<TABLE> <S> <C>

<ARTICLE>        UT
<LEGEND>
THIS SCHEDULE  CONTAINS  SUMMARY  FINANCIAL  INFORMATION  EXTRACTED  FROM PUBLIC
SERVICE  COMPANY OF COLORADO AND  SUBSIDIARIES  CONSOLIDATED  CONDENSED  BALANCE
SHEET AS OF SEPTEMBER 30, 1999 AND CONSOLIDATED  CONDENSED  STATEMENTS OF INCOME
AND CASH FLOWS FOR THE NINE MONTHS ENDED  SEPTEMBER 30, 1999 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>            0000081018
<NAME>           Public Service Company of Colorado
<MULTIPLIER>                                                  1,000

<S>                                               <C>
<PERIOD-TYPE>                                                 9-MOS
<FISCAL-YEAR-END>                                       DEC-31-1998
<PERIOD-END>                                            SEP-30-1999
<BOOK-VALUE>                                               PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                 4,275,040
<OTHER-PROPERTY-AND-INVEST>                                 204,095
<TOTAL-CURRENT-ASSETS>                                      503,860
<TOTAL-DEFERRED-CHARGES>                                    346,251
<OTHER-ASSETS>                                                    0
<TOTAL-ASSETS>                                            5,329,246
<COMMON>                                                          0
<CAPITAL-SURPLUS-PAID-IN>                                 1,302,119
<RETAINED-EARNINGS>                                         338,519
<TOTAL-COMMON-STOCKHOLDERS-EQ>                            1,640,638
                                       194,000
                                                       0
<LONG-TERM-DEBT-NET>                                      1,584,327
<SHORT-TERM-NOTES>                                                0
<LONG-TERM-NOTES-PAYABLE>                                         0
<COMMERCIAL-PAPER-OBLIGATIONS>                              396,300
<LONG-TERM-DEBT-CURRENT-PORT>                               240,451
                                         0
<CAPITAL-LEASE-OBLIGATIONS>                                  34,681
<LEASES-CURRENT>                                              1,405
<OTHER-ITEMS-CAPITAL-AND-LIAB>                            1,237,444
<TOT-CAPITALIZATION-AND-LIAB>                             5,329,246
<GROSS-OPERATING-REVENUE>                                 1,639,235
<INCOME-TAX-EXPENSE>                                         67,154
<OTHER-OPERATING-EXPENSES>                                1,304,935
<TOTAL-OPERATING-EXPENSES>                                1,372,089
<OPERATING-INCOME-LOSS>                                     267,146
<OTHER-INCOME-NET>                                             (621)
<INCOME-BEFORE-INTEREST-EXPEN>                              266,525
<TOTAL-INTEREST-EXPENSE>                                    116,017
<NET-INCOME>                                                150,508
                                       0
<EARNINGS-AVAILABLE-FOR-COMM>                               150,508
<COMMON-STOCK-DIVIDENDS>                                    137,202
<TOTAL-INTEREST-ON-BONDS>                                    92,221
<CASH-FLOW-OPERATIONS>                                      315,654
<EPS-BASIC>                                                  0.00
<EPS-DILUTED>                                                  0.00


</TABLE>

<TABLE> <S> <C>

<ARTICLE>        UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SOUTHWESTERN
PUBLIC  SERVICE  COMPANY  CONDENSED  BALANCE  SHEET AS OF SEPTEMBER 30, 1999 AND
CONDENSED  STATEMENTS  OF  INCOME  AND  CASH  FLOWS  FOR THE NINE  MONTHS  ENDED
SEPTEMBER  30,  1999 AND IS  QUALIFIED  IN ITS  ENTIRETY  BY  REFERENCE  TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK>            0000092521
<NAME>           Southwestern Public Service Company
<MULTIPLIER>                                                  1,000

<S>                                               <C>
<PERIOD-TYPE>                                                 9-MOS
<FISCAL-YEAR-END>                                       DEC-31-1998
<PERIOD-END>                                            SEP-30-1999
<BOOK-VALUE>                                               PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                 1,762,548
<OTHER-PROPERTY-AND-INVEST>                                 124,753
<TOTAL-CURRENT-ASSETS>                                      188,972
<TOTAL-DEFERRED-CHARGES>                                    174,705
<OTHER-ASSETS>                                                    0
<TOTAL-ASSETS>                                            2,250,978
<COMMON>                                                          0
<CAPITAL-SURPLUS-PAID-IN>                                   348,402
<RETAINED-EARNINGS>                                         415,299
<TOTAL-COMMON-STOCKHOLDERS-EQ>                              763,701
                                       100,000
                                                       0
<LONG-TERM-DEBT-NET>                                        605,840
<SHORT-TERM-NOTES>                                                0
<LONG-TERM-NOTES-PAYABLE>                                         0
<COMMERCIAL-PAPER-OBLIGATIONS>                              103,391
<LONG-TERM-DEBT-CURRENT-PORT>                                90,113
                                         0
<CAPITAL-LEASE-OBLIGATIONS>                                       0
<LEASES-CURRENT>                                                  0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                              587,933
<TOT-CAPITALIZATION-AND-LIAB>                             2,250,978
<GROSS-OPERATING-REVENUE>                                   717,253
<INCOME-TAX-EXPENSE>                                         52,868
<OTHER-OPERATING-EXPENSES>                                  536,631
<TOTAL-OPERATING-EXPENSES>                                  589,499
<OPERATING-INCOME-LOSS>                                     127,754
<OTHER-INCOME-NET>                                            6,809
<INCOME-BEFORE-INTEREST-EXPEN>                              134,563
<TOTAL-INTEREST-EXPENSE>                                     45,803
<NET-INCOME>                                                 88,760
                                       0
<EARNINGS-AVAILABLE-FOR-COMM>                                88,760
<COMMON-STOCK-DIVIDENDS>                                     63,280
<TOTAL-INTEREST-ON-BONDS>                                    37,889
<CASH-FLOW-OPERATIONS>                                       78,084
<EPS-BASIC>                                                  0.00
<EPS-DILUTED>                                                  0.00


</TABLE>


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