NEW CENTURY ENERGIES INC
10-K, 1999-03-29
ELECTRIC & OTHER SERVICES COMBINED
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                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                  FORM 10-K

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

           For the Fiscal Year Ended December 31, 1998

                      OR

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

           For the transition period from _____________   to   ____________

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

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

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

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


                             --------------------

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


<PAGE>


Securities registered pursuant to Section 12(b) of the Act:

                                                         Name of Each Exchange
Registrant                   Title of Each Class          on Which Registered
- ----------                   -------------------          -------------------
New Century Energies, Inc.   Common Stock,  $1 par
                              value per share                   New York

Public Service Company
  of Colorado                7.60% Trust Originated 
                             Preferred Securities               New York

Southwestern Public
  Service Company            7.85% Trust Preferred
                             Securities, Series A               New York

Securities registered pursuant to Section 12(g) of Act:         None

      Indicate by check mark whether the  registrants (1) have 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
registrants  were required to file such  reports),  and (2) have been subject to
such filing requirements for the past 90 days. Yes X  No

      Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrants'  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

      As of March 24, 1999, 114,924,982 shares of New Century Energies,  Inc.
Common  Stock  were  outstanding.  The  aggregate  market  value of New  Century
Energies,  Inc. Common Stock,  $1.00 par value (the only class of voting stock),
held by non-affiliates was  $4,446,160,241  based on the last sale price of such
stock on the New York Stock Exchange on March 24, 1999. New Century Energies,
Inc. is the sole holder of the Common Stock of PSCo and SPS.

                     DOCUMENTS INCORPORATED BY REFERENCE
      Portions of the Proxy Statement of New Century Energies,  Inc. to be filed
in connection with its Annual Meeting of Shareholders,  to be held May 11, 1999,
are incorporated by reference into Part III hereof.



<PAGE>


                              TABLE OF CONTENTS

                                                                         Page
Definitions                                                             Number
- -----------                                                             ------
Part I
      Item 1. Business..............................................       1
      Item 2. Properties............................................      23
      Item 3. Legal Proceedings.....................................      27
      Item 4. Submission of Matters to a Vote of Securities Holders.      27
Part II
      Item 5. Market for  Registrant's  Common Equity and Related
                Stockholder Matters.................................      27
      Item 6. Selected Financial Data...............................      29
      Item 7. Management's Discussion and Analysis of Financial 
               Condition and Results of Operations..................      31
      Item 7A Quantitative and Qualitative Disclosures About 
               Market Risk .........................................      42
      Item 8. Financial Statements and Supplementary Data...........      43
      Item 9. Changes in and Disagreements with Accountants on 
               Accounting and Financial Disclosure..................     127
Part III
      Item 10. Directors and Executive Officers of the Registrants..     127
      Item 11. Executive Compensation ..............................     133
      Item 12. Security Ownership of Certain Beneficial Owners 
               and Management ......................................     133
      Item 13. Certain Relationships and Related Transactions.......     133
Part IV
      Item 14. Exhibits, Financial Statement Schedules and Reports
                on Form 8-K ........................................     133
Experts  ...........................................................     135
Consents of Independent Public Accountants..........................     136
Signatures    ......................................................     138
Exhibit Index ......................................................     145

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

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

                         FORWARD LOOKING INFORMATION

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

                                 DEFINITIONS

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

Abbreviation or Acronym                                              Term
- -----------------------                                              ----
AEP............................................American Electric Power Company
AFDC..............................Allowance for Funds Used During Construction
Arapahoe............................Arapahoe Steam Electric Generating Station
BLM .................................................Bureau of Land Management
Cameo .................................Cameo Steam Electric Generating Station
CERCLA ...Comprehensive Environmental Response, Compensation and Liability Act
Cherokee........................... Cherokee Steam Electric Generating Station
Cheyenne ...............................Cheyenne Light, Fuel and Power Company
CIG ...........................................Colorado Interstate Gas Company
Comanche ...........................Comanche Steam Electric Generating Station
Company or NCE........................New Century Energies, Inc., a registrant
CPUC .....................Public Utilities Commission of the State of Colorado
Craig..................................Craig Steam Electric Generating Station
Denver District Court..District Court in and for the City and County of Denver
DOE..................................................U.S. Department of Energy
DSM.....................................................Demand Side Management
DSMCA...................................Demand Side Management Cost Adjustment
Dth..................................................................Dekatherm
e prime.........................................e prime, inc. and subsidiaries
ECA.....................................................Energy Cost Adjustment
EIS.............................................Environmental Impact Statement
EPA.......................................U.S. Environmental Protection Agency
EPAct.......................................National Energy Policy Act of 1992
EWG.................................................Exempt Wholesale Generator
FASB......................................Financial Accounting Standards Board
FERC......................................Federal Energy Regulatory Commission
FERC Order 636.................................FERC Order Nos. 636-A and 636-B
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
Hayden ...............................Hayden Steam Electric Generating Station
IBM .......................................................IBM Global Services
ICA..................................................Incentive Cost Adjustment
IRP ..................................................Integrated Resource Plan
IRS...................................................Internal Revenue Service
KN Energy......................................................KN Energy, Inc.
Kwh..............................................................kilowatt-hour
Merger...................... the business combination between the PSCo and SPS
Merger Agreement.............Agreement and Plan of Reorganization by and among
                                                 PSCo, SPS and NCE, as amended
Mw....................................................................Megawatt
NMPRC........................New Mexico Public Regulation Commission formerly,
                                      the New Mexico Public Utility Commission
Natural Fuels .......................................Natural Fuels Corporation
NC Enterprises............................................NC Enterprises, Inc.
NCI............................................New Century International, Inc.
NCS.................................................New Century Services, Inc.
New Century Cadence..................................New Century Cadence, Inc.

                                       ii
<PAGE>

New Century Centrus..................................New Century Centrus, Inc.
NOx.............................................................Nitrogen Oxide
OCC .......................................Colorado Office of Consumer Counsel
OPEB ...................................Other Postretirement Employee Benefits
PCB...................................................Polychlorinated biphenyl
Pawnee ...............................Pawnee Steam Electric Generating Station
Pawnee 2...........Pawnee Steam Electric Generating Station, Unit 2 (proposed)
Planergy..............................................The Planergy Group, Inc.
Pool ........................................................Inland Power Pool
PRPs ..........................................Potentially Responsible Parties
PSCCC...........................................PS Colorado Credit Corporation
PSCo..........................Public Service Company of Colorado, a registrant
PSRI ....................................................PSR Investments, Inc.
PUHCA ..............................Public Utility Holding Company Act of 1935
PUCT........................................Public Utility Commission of Texas
QF.........................................................Qualifying Facility
QFCCA...........................Qualifying Facilities Capacity Cost Adjustment
QSP....................................................Quality of Service Plan
Quixx.......................................Quixx Corporation and subsidiaries
SEC.........................................Securities and Exchange Commission
SFAS...............................Statement of Financial Accounting Standards
SFAS 106................Statement of Financial Accounting Standards No. 106 -
       "Employers' Accounting for Postretirement Benefits Other Than Pensions"
SFAS 112................Statement of Financial Accounting Standards No. 112 -
                           "Employers' Accounting for Postemployment Benefits"
SFAS 123................Statement of Financial Accounting Standards No. 123 -
                                     "Accounting for Stock-Based Compensation"
SO2.............................................................Sulfur Dioxide
SPP.......................................................Southwest Power Pool
SPS..........................Southwestern Public Service Company, a registrant
TNP.............................................Texas-New Mexico Power Company
TOG.......................................................Texas-Ohio Gas, Inc.
TOP..................................................Texas-Ohio Pipeline, Inc.
Transition Period .................Four month period September 1, 1996 through
                                                             December 31, 1996
Tri-State..............Tri-State Generation and Transmission Association, Inc.
TUCO................................................................TUCO, Inc.
UE............................Utility Engineering Corporation and subsidiaries
U.K. ...........................................................United Kingdom
Valmont .............................Valmont Steam Electric Generating Station
WGI ..................................................WestGas InterState, Inc.
WPSC......................................Public Service Commission of Wyoming
WSCC......................................Western Systems Coordinating Council
WSPP................................................Western Systems Power Pool
Young Storage..................................Young Gas Storage Company, Ltd.
YGSC.................................................Young Gas Storage Company
Yorkshire Electricity..........................Yorkshire Electricity Group plc
Yorkshire Power.....................................Yorkshire Power Group Ltd.
Zuni ...................................Zuni Steam Electric Generating Station


                                      iii
<PAGE>


                                    PART I

Item l.  Business

The Company

      NCE,  incorporated under the laws of Delaware in 1995, is a public utility
holding company registered under PUHCA. On August 1, 1997, PSCo and SPS combined
to form NCE, with PSCo and SPS becoming  wholly-owned  subsidiaries  of NCE. The
common  shareholders  of  PSCo  and SPS  received  one  and  0.95 of one  share,
respectively,  of NCE common stock, par value $1.00 per share, and became common
shareholders of NCE. The Merger was accounted for as a pooling-of-interests, and
the Consolidated Financial Statements and statistical data in this Form 10-K are
presented as if the Merger were  consummated as of the beginning of the earliest
period presented.

      The  Company  has no  significant  assets  other  than  the  stock  of its
subsidiaries. The revenues of NCE and its subsidiaries are derived substantially
from  the  generation,   purchase,   transmission,   distribution  and  sale  of
electricity  and from the  purchase,  transportation,  distribution  and sale of
natural gas. The utility  subsidiaries serve  approximately 1.6 million electric
customers  and   approximately  1.1  million  gas  customers  in  their  service
territories which include portions of the states of Colorado, Texas, New Mexico,
Wyoming, Kansas and Oklahoma.

      The Company owns all the outstanding  common stock of PSCo, SPS, Cheyenne,
WGI, NCS, and NC Enterprises. PSCo owns certain subsidiaries as described below.
NC  Enterprises,   an   intermediate   holding   company,   owns  the  following
subsidiaries:  Quixx, e prime, UE, Natural Fuels (83.63% ownership), New Century
Cadence, Planergy, New Century Centrus and, effective March 31, 1998, NCI. Refer
to the non-utility operations and foreign investments sections below for further
discussion.

      Disclosure  about  business  segments  of NCE,  PSCo  and SPS and  related
information are set forth in Note 14. Business Segment Information in Item 8.
FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

Recent Events - Proposed Merger

     On March 24, 1999,  NCE and  Northern  States  Power  Company,  a Minnesota
corporation  ("NSP"),  entered into an Agreement and Plan of Merger (the "Merger
Agreement")  providing  for a  strategic  business  combination  of NCE and NSP.
Pursuant to the Merger Agreement,  NCE will be merged with and into NSP with NSP
as the surviving corporation in the Merger (the "Merger").  Subject to the terms
of the Merger  Agreement,  at the time of the  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 NSP common stock,  par value
$2.50  per  share  ("NSP  Common  Stock").  Cash  will  be  paid  in lieu of any
fractional  shares of NSP Common  Stock which  holders of NCE Common Stock would
otherwise  receive.  The 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.

     Consummation  of the  Merger is  subject  to  certain  closing  conditions,
including,  among others,  approval by the shareholders of NCE and NSP, approval
of regulatory  review by certain state utilities  regulators,  the SEC under the
PUHCA,  as amended,  the FERC, the Nuclear  Regulatory  Commission,  the Federal
Communications Commission and  expiration or  termination  of the waiting period
applicable to the Merger under the Hart-Scott-Rodino  Antitrust Improvements Act
of 1976, as amended. Each of NCE and NSP have agreed to certain undertakings and
limitations  regarding the conduct of their  businesses  prior to the closing of
the  transaction.  The  Merger  is  expected  to take  from 12 to 18  months  to
complete.

     Pursuant to employment agreements,  Mr. James J. Howard, Chairman and Chief
Executive  Officer of NSP will serve as Chairman of the combined company for one
year  following the Merger and Mr. Wayne H. 

                                       1
<PAGE>

Brunetti,  Vice  Chairman,  President and Chief  Operating  Officer of NCE, will
President and Chief Executive  Officer  following the Merger and will assume the
responsibilities of Chairman when Mr. Howard retires.

     NCE expects to hold a special shareholders' meeting later this year to vote
on the Merger. all shareholders will receive a detailed proxy statement prior to
the meeting, which will explain in detail the terms of the Merger, membership on
the Board of Directors, employment arrangements and other matters related to the
Merger

Utility Operations

      PSCo was incorporated through merger of predecessors under the laws of the
State of Colorado in 1924. PSCo is an operating  utility engaged  principally in
the generation, purchase, transmission, distribution and sale of electricity and
in the  purchase,  transportation,  distribution  and sale of natural gas.  PSCo
serves  approximately  1.2 million  electric  customers  and  approximately  1.0
million gas customers in the state of Colorado.  PSCo owns the following  direct
subsidiaries:  1480 Welton,  Inc., a real estate company which owns certain real
estate  interests of PSCo; PSRI which owns and manages  permanent life insurance
policies on certain past and present  employees,  the benefits from which are to
provide future funding for general corporate purposes;  PSCCC, a finance company
that finances  certain of PSCo's current  assets;  Green and Clear Lakes Company
which  owns  water  rights  and  storage  facilities  for  water  used at PSCo's
Georgetown  Hydroelectric station; and Fuelco, a dissolved Colorado corporation,
which was  primarily  involved  in the  exploration  and  production  of oil and
natural gas. On July 1, 1996, Fuelco sold its remaining properties, the San Juan
Basin Coal Bed Methane  properties,  at approximately  book value and, effective
October 31, 1996, Fuelco was dissolved.  PSCo also holds a controlling  interest
in several  other  relatively  small  ditch and water  companies  whose  capital
requirements are not significant.

      PSCo also owned all of the outstanding common stock of NCI. NCI was formed
to hold  PSCo's 50%  interest  in  Yorkshire  Power (a joint  venture  initially
between  PSCo and AEP)  which  purchased  Yorkshire  Electricity  in April  1997
through Yorkshire  Holdings plc.  Effective March 31, 1998, PSCo sold its common
stock  investment in NCI to NC Enterprises in exchange for a 20-year  promissory
note. For a more detailed  discussion refer to "Foreign  Investments"  below and
Note 2. Investment in Yorkshire Power and U.K. Windfall Tax in Item 8. FINANCIAL
STATEMENTS AND SUPPLEMENTARY DATA.

       SPS was  incorporated  in 1921 under the laws of the State of New Mexico.
SPS is an operating utility engaged  primarily in the generation,  transmission,
distribution and sale of electricity.  SPS serves approximately 385,000 electric
customers in portions of the states of Texas,  New Mexico,  Oklahoma and Kansas.
The 267 wholesale  customers served by SPS comprise  approximately  35% of total
Kwh sales.

      Cheyenne was  incorporated in 1900 under the laws of the State of Wyoming.
Cheyenne is an operating utility engaged in the purchase,  distribution and sale
of electricity and natural gas primarily serving  approximately  35,000 electric
customers and 28,000 gas customers in Cheyenne, Wyoming.

      WGI was incorporated in 1990 under the laws of the State of Colorado.  WGI
is a natural gas  transmission  company engaged in transporting gas to Cheyenne,
Wyoming via a thirteen mile connecting  pipeline between Chalk Bluffs,  Colorado
and Cheyenne, Wyoming.

Electric Utility Operations

      The  Company's  utility   subsidiaries   expect  to  use  the  following
resources to meet their net dependable  system capacity  requirements:  1) the
Company's electric  generating  stations (see Electric  Generation Property in
Item 2.  PROPERTIES);  2) purchases  from other  utilities and from QFs, EWGs,
IPPFs and power marketers;  3) renewables and demand-side  management  options
and 4) new generation alternatives,  including the phased expansion at of Fort
St. Vrain.

                                       2
<PAGE>

Peak Load

      During  1999,  net firm system peak demand and the net  dependable  system
capacity for the Company's  electric utility  subsidiaries is projected to be as
follows:

                       1999 Projected          1999 Projected            Reserve
Operating company  Net Firm System Peak  Net Dependable System Capacity*  Margin
- -----------------  --------------------  -------------------------------  ------

      PSCo                 4,894 Mw               5,171 Mw                  6%
      SPS                  4,043 Mw               4,850 Mw                 17%
      Cheyenne               136 Mw                 152 Mw                 **
- --------------

      *  Net dependable system capacity is the maximum net capacity available
         from both owned generating units and purchased power contracts to meet
         the net firm system peak demand.
      ** Reserve margin for Cheyenne is held by PacifiCorp.

       The net firm system peak demand for each of the last three years was as
follows:

                                          Net Firm System Peak Demand (Mw)
                                      1996          1997           1998
                                      ----          ----           ----
      PSCo*......................    4,397          4,487         4,771
      SPS........................    3,694          3,715         3,933
      Cheyenne **................        -            132           140
- --------------

      *  Excludes  station   housepower,   nonfirm  electric  furnace  load  and
         controlled  interruptible  loads.  In  1998,  approximately  138  Mw of
         controlled  interruptible  loads  were  interrupted  at the time of the
         system  peak.  Approximately  122 Mw and 116 Mw in the  years  1996 and
         1997, respectively, was not interrupted at the time of the system peak.
      ** Prior to the Merger,  Cheyenne  was a  subsidiary  of PSCo;  therefore,
         Cheyenne's coincidental peak demand is included with PSCo in 1996.

     The net firm system peak demand for PSCo for the years  1996-1998  occurred
in the summer.  The net firm system peak demand for 1998, which occurred on July
13, 1998, was 4,771 Mw. At that time, the net dependable system capacity totaled
5,034 Mw (generating capacity of 3,392 Mw, together with firm purchases of 1,642
Mw), which  represented a reserve margin of approximately  6%). With higher than
expected demand in summer 1998, PSCo revised its demand  forecast,  and found it
needed resources two years earlier than previously believed. The approximate 250
Mw resource  need for the summer of 1999 will be filled  through a  solicitation
for short-term resources. The approximate 520 Mw resource need for 2000 and 2001
will be filled through a separate  solicitation  allowing contract terms up to 7
years.

      The net firm system peak demand for SPS for the years  1996-1998  occurred
in the summer.  The net firm system peak demand for 1998, which occurred on June
30, 1998, was 3,933 Mw. At that time, the net dependable system capacity totaled
approximately  4,443 Mw (including firm purchases),  which represented a reserve
margin of approximately 13%.

Purchased Power

      The Company's electric utility subsidiaries have contractual  arrangements
with  regional  utilities as well as QFs, and EWGs,  in order to meet the energy
needs  of  their  customers.   Capacity,  typically  measured  in  Kilowatts  or
Megawatts,  is the measure of the rate at which a particular  generating  source
produces   electricity.   Energy,   typically   measured  in  Kilowatt-hours  or
Megawatt-hours,  is a measure  of the  amount  of  electricity  produced  from a
particular  generating  source over a period of time.  Purchase power  contracts
typically  provide for a charge for the capacity  from a  particular  generating
source, together with a charge for the associated energy actually purchased from
such generating source.


                                       3
<PAGE>


      The Company's  electric  utility  subsidiaries  have  contracted  with the
following  sources for the firm  purchase of capacity  and energy at the time of
the  anticipated  summer 1999 net firm system peak demand through the expiration
of the contracts:
                                                    Mw Contracted
                                                  For at the Time
                                                 of the Anticipated
                                Generating      Summer 1999 Net Firm   Contract
Company                           Source         System Peak Demand   Expiration
- -------                           ------         ------------------   ----------
PSCo Contracts:

Basin Electric Power
  Cooperative:            Laramie River Station          175             2016
  Agreements 1 and 2(a)(b)

  Agreement 3 (a)(b)      Laramie River Station          125             2004

Colorado Energy 
 Management (a)(c)        Brush 4 Facility                50             2000

CL Six Power Sales 
 Agreement (a)(d)         CL 6 Resource Portfolio         80             2002

El Paso Electric Power
 Services (a)(e)          Brush 1 & 3 Facility            75             2005

PacifiCorp (f)            PacifiCorp Resource Pool       176             2011

Platte River Power
 Authority (a)(g)         Craig Units 1 and 2;           116             2004
                               Rawhide Unit 1

Tri-State:                                               475              (i)
  Agreements 1, 2,
   3 and 4 (a)(h)         Laramie River Station
                          Craig Station

  Agreement 5 (a)(h)      Laramie River Station
                          Craig Station
                          Nucla Station

Other contracts
 individually less
 than 50Mw (a)            QFs & IPPF                     496       Various dates
                                                   ---------
    Subtotal - PSCo                                    1,768

SPS Contracts:
Borger Energy
 Associates (i)           Blackhawk Station              230             2024

Golden Spread Electric
 Cooperative (a)(j)       Mustang Station                278             1999
                                                         ---
   Subtotal - SPS                                        508

Cheyenne Contract:
PacifiCorp (k)            PacifiCorp System              152             2000
                                                      ------
                                                       2,428
                                                       =====
- ------------

(a)These contracts are contingent  upon the  availability of the units listed as
   the generating source. These contracts are take and pay contracts. Based upon
   the terms of these agreements, if the capacity is available from these units,
   then  PSCo is  obligated  to pay for  capacity  whether  or not it takes  any
   energy.   However,  PSCo  has  historically   satisfied  the  minimum  energy
   requirements associated with these agreements and anticipates doing so in the
   future.  Additionally,  if these units are unavailable, the supplying company
   has no  obligation to furnish  capacity or energy and the capacity  charge to
   PSCo is reduced accordingly.

(b)Agreement 1 is for 100 Mw of capacity through March 31, 2016.  Agreement 2 is
   for 75 Mw of summer  season  capacity  through  March  31,  2016 and 25 Mw of
   winter season  capacity  through March 31, 2010.  Agreement 3, dated December
   14, 1998 is for 125 Mw of capacity beginning April 1, 1999 and continuing for
   five years.

(c)Agreement dated November 24, 1998 is for 50 Mw of peaking capacity.  The term
   of the agreement is for 11 months beginning June 1, 1999.

                                       4
<PAGE>

(d)The  Agreement  between  PSCo and CL Six Power Sales is for 80 Mw of capacity
   during the summer  season and 85 Mw during the winter  season.  The agreement
   became  effective  April 2, 1998, and it terminates on August 10, 2002.  This
   agreement replaced an 81 Mw QF purchased power contract.

(e)Effective  October 30, 1998,  PSCo agreed to purchase 50 Mw of capacity  from
   El Paso Power  Services.  The term of the agreement is for 7 years  beginning
   January 1, 1999. This agreement  replaced a 50 Mw QF purchased power contract
   which was terminated in 1998.

(f)The current agreement with PacifiCorp expires October 31, 2022. However,  the
   agreement  provides PSCo the opportunity to exercise an irrevocable option to
   terminate the  agreement on December 31, 2011,  provided PSCo gives notice to
   PacifiCorp no later than March 1, 2002.

(g)The  amount  of  capacity  to be  made  available  from  Platte  River  Power
   Authority during the term of the agreement for each summer and winter season,
   is established in the Agreement.

(h)PSCo has entered into five agreements  with Tri-State.  Agreements 1, 2 and 5
   are contracts for 100 Mw each of capacity and expire in 2001,  2017 and 2011,
   respectively.  Agreement 3 is a contract for 25 Mw of summer season  capacity
   and 75 Mw of winter season capacity and expires in 2016.  Agreement 4 expires
   in 2018 and the related capacity is for the following  amounts:  1999 through
   2000 - 200 Mw and 2001 through 2018 - 250 Mw; however, either party may elect
   to reduce the Agreement 4 capacity by up to 50 Mw each year, except for 2001,
   effective  in the year 1999.  If the full 50 Mw reduction is taken each year,
   the capacity  associated  with  Agreement 4 from 1999 on would be as follows:
   1999 - 150 Mw, 2000 through  2001 - 100 Mw, 2002 - 50 Mw with no  commitments
   thereafter.  PSCo has  notified  Tri-State  of its intent not to purchase any
   capacity under Agreement 4 for the contract period 2003 through 2018.

(i)SPS  entered  into  a  25  year  agreement  with  Borger  Energy   Associates
     L.P.("BEA"),  an affilliate of Quixx holding a 45% ownership interest,  for
     the purchase of capacity and energy.  Effective  October 1, 1998, BEA began
     providing SPS with up to 205 Mw of capacity.  On or about May 1, 1999,  BEA
     will  provide  SPS  with up to 230 Mw of  capacity  through  the  remaining
     contract term. SPS has an option to extend the term of the agreement for an
     additional 10 years.

(j)SPS and Golden Spread Electric  Cooperative  ("Golden Spread") entered into a
   Power Sales Agreement on November 16, 1998. Under the terms of the Agreement,
   SPS will purchase up to 278 Mw of capacity  during the simple cycle operation
   of the  Mustang  Station,  estimated  to cover  the  period  from May 1, 1999
   through the end of 1999.

(k)This  contract,  which expires on December 31, 2000,  provides for PacifiCorp
   to sell to  Cheyenne  the total  electric  capacity  and energy  requirements
   associated with the operation of Cheyenne's service area.

      See Note 10.  Commitments and  Contingencies - Purchase  Requirements in
Item  8.  FINANCIAL   STATEMENTS  AND   SUPPLEMENTARY   DATA  for  information
regarding the  Company's  financial  commitments  under these  contracts.  See
Interconnections  in Item 2.  PROPERTIES  for a  discussion  of the  Company's
interconnections with these sources.

      Based on present  estimates,  PSCo will purchase  approximately 31% of the
total electric system energy input for 1999. In addition,  based on the capacity
associated with the purchase power contracts described above,  approximately 34%
of the total net dependable  system  capacity for the estimated  summer 1999 net
firm system peak demand for PSCo will be provided by purchased power.

      All of the QF capacity purchased by PSCo, including  approximately 4 Mw of
additional  capacity scheduled to come on line in the future, is being purchased
under  contracts  entered  into prior to  January  1,  1988.  Subject to certain
exceptions or a waiver  permitted by the CPUC, PSCo is to use a complete bidding
process  to make any  additional  purchases  of QF and IPPF  capacity.  In 1998,
approximately  13% of PSCo's  summer net firm system peak demand was provided by
QFs.

      In addition to the  long-term  purchases of capacity and energy  discussed
above PSCo made short-term and non-firm purchases throughout the year to replace
generation from PSCo-owned  units which were  unavailable due to maintenance and
unplanned  outages,  to provide PSCo's reserve obligation to the Pool, to obtain
energy at a lower  cost than that  which  could be  produced  by other  resource
options,   including  PSCo-owned  generation  and/or  long-term  purchase  power
contracts, and for various other operating requirements. Short-term and non-firm
purchases  represented  approximately  6% of PSCo's total energy  requirement in
1998.

                                       5
<PAGE>

      Based on current  projections,  PSCo expects that purchased  capacity will
continue to meet a significant  portion of system  requirements.  Such purchases
neither  require PSCo to make an investment  nor afford PSCo an  opportunity  to
earn a return.  Further  discussion  related to recovery of  purchased  capacity
costs can be found in "Regulations  and Rates - Cost Recovery  Mechanisms."  SPS
arranged  seasonal  short-term  purchases  for the  summer  of 1998 and may make
additional short-term purchases for the 1999 summer season.

      PSCo is a member of the Rocky Mountain Reserve Group ("Reserve  Group"), a
new reserve sharing group. The Reserve Group is composed of members in the Rocky
Mountain area, each of which owns and/or  operates  electric  generation  and/or
transmission systems and are interconnected to one or more other member systems.
The Reserve Group was granted final  acceptance by the FERC in January 1999. The
objective of the Reserve Group is to provide  capacity  which is  categorized as
either  immediately  accessible or accessible  within ten minutes.  The capacity
used by the Reserve Group members is to cover  unanticipated  loss of generation
as well as to provide a source of emergency  assistance  when there is a risk of
not meeting firm load. As a result of its membership in the Reserve Group,  PSCo
can supply and protect its electric system with less aggregate operating reserve
capacity than otherwise would be necessary.  Additionally,  emergency conditions
can be met with less likelihood of curtailment or impairment of electric service
and generation and transmission facilities and interconnections can be used more
efficiently and economically.

      Refer  to  Item 2.  Properties  -  Electric  Transmission  Property  for a
discussion of SPS's activities with the SPP and the WSPP.

Electric Fuel Supply

      The following  tables  present the delivered  cost per million Btu of each
category of fuel consumed by the system for electric generation during the years
indicated,  the  percentage  of  total  fuel  requirements  represented  by each
category of fuel and the weighted average cost of all fuels during such years:

      PSCo generating plants:                             Weighted
                                                           Average
                                Coal*          Gas       All Fuels**
                            Cost $   %     Cost $   %      Cost $ 
                            ----------     ----------      ------ 

       1998...............    0.93  95       2.46   5       1.00

       1997...............    0.99  98       3.03   2       1.03

       1996...............    1.03  98       2.42   2       1.05

      *  The average cost per ton of coal for years 1996 through 1998, including
         freight, shown above was $20.17, $18.96, and $17.41, respectively.
      ** Insignificant purchases of oil are included.

      SPS generating plants:                              Weighted
                                                           Average
                                Coal           Gas       All Fuels**
                            Cost $   %     Cost $   %      Cost $
                            ----------     ----------      ------

       1998...............    1.60  67       2.19  33       1.80

       1997...............    1.84  69       2.55  31       2.06

       1996...............    1.93  69       2.38  31       2.06

      *  The average cost per ton of coal for years 1996 through 1998, including
         freight  and other  components,  shown above was  $33.26,  $31.97,  and
         $28.57 respectively.
       **Insignificant purchases of oil, steam and hot nitrogen are included.

                                       6
<PAGE>

Coal

      PSCo's  primary  fuel  for  its  steam  electric  generating  stations  is
low-sulfur western coal. PSCo's coal requirements are purchased  primarily under
eight long-term contracts with suppliers operating in Colorado and Wyoming.  The
percentage  of PSCo's 1999 coal  requirements  supplied  under  these  long-term
contracts varies from plant to plant as detailed  herein.  During the year ended
December  31,  1998,   PSCo's  coal   requirements   for  existing  plants  were
approximately  9,780,000  tons.  A  substantial  portion  of which was  supplied
pursuant to long-term supply contracts.  Coal supply inventories at December 31,
1998, were  approximately 40 days usage,  based on the average burn rate for all
of PSCo's coal-fired plants.

                                             Ending Inventory 
                                             Tons         Days
                                             ----         ----
            Arapahoe                        68,092          28
            Cameo                            6,815           8
            Cherokee                       229,737          36
            Comanche                       394,094          40
            Craig-PSCo                     151,069          22
            Hayden-PSCo                     21,534          59
            Pawnee                         332,702          48
            Valmont                         70,490          42

      PSCo operates two  mine-mouth  generating  stations:  the Cameo and Hayden
Stations and has partial ownership in a third mine-mouth generating station, the
Craig Station located in Colorado.  PSCo has secured over 90% of Cameo Station's
coal  requirements  through 1999 via a contract with the nearby  Powderhorn Coal
Company's  Roadside  mine  ("Powderhorn").  Any  remaining  requirements  may be
purchased from either the spot market or Powderhorn. PSCo is the operating agent
at the Hayden Station and all coal  requirements  are supplied under a long-term
agreement  from the nearby  Peabody-affiliated  Seneca mine.  Over 75% of PSCo's
Craig Station coal requirements are supplied under two long-term agreements with
Colowyo Coal Company and the nearby  Trapper  Mining,  Inc.  mine. Any remaining
Craig Station requirements for PSCo are supplied via spot market coal purchases.

     PSCo has  contracted  for  long-term  coal supplies  with  Twentymile  Coal
Company's  Foidel Creek Mine and Mountain Coal  Company's West Elk Mines located
in Colorado to supply  approximately  70% of the Cherokee and Valmont  Station's
projected  requirements  through 2000. PSCo has long-term coal supply agreements
with Cyprus' affiliate,  Amax Coal West, Inc., for Pawnee and Comanche Station's
projected  requirements  from the Belle Ayr and Eagle Butte mines located in the
Powder River Basin in Wyoming.  Under the  long-term  agreements,  specific coal
reserves  at the  contractually  defined  mine(s)  have  been  dedicated  by the
respective supplier to meet the contract quantity obligations. In addition, PSCo
has a coal supply  agreement  with Kennecott  Energy's  Antelope Coal Company to
supply  approximately 66% of Arapahoe Station's projected  requirements  through
1999. Any remaining Arapahoe Station  requirements will be obtained through spot
market purchases.

      Coal is transported by rail,  primarily from mines located in Colorado for
PSCo's  Cherokee  and Valmont  Stations,  and from mines  located in Wyoming for
PSCo's Arapahoe,  Pawnee and Comanche  Stations,  to stockpiles  adjacent to the
Company's coal-burning generating stations. Powder River Basin coal supplies are
transported by the Burlington  Northern Santa Fe Railway  Company over distances
ranging from 368-575 miles.  Transportation charges for these Powder River Basin
coal supplies  comprise more than 55% of the total cost of the coal delivered to
the Arapahoe,  Pawnee and Comanche  stations.  Colorado origin coal supplies are
transported by the Union Pacific  Railroad  Company and the Burlington  Northern
Santa Fe Railway Company over a combined  distance ranging  approximately 250 to
300 miles.  Transportation  charges for these Colorado origin coal supplies make
up more than 32% of the total  delivered  cost of the coal to the  Cherokee  and
Valmont stations.

                                       7
<PAGE>

      SPS  purchases  all of its  coal  requirements  for  Harrington  and  Tolk
electric  generating  stations from TUCO, in the form of crushed,  ready-to-burn
coal delivered by coal-handling  facilities owned by Wheelabrator  Coal Services
Co. to the SPS's boiler bunkers located within SPS's coal-fueled  stations where
it is processed for burning. The coal is transported for TUCO by rail, primarily
from mines located in Wyoming, to TUCO's stockpiles, which are adjacent to SPS's
coal-burning  generation stations. At December 31, 1998, TUCO's coal inventories
at  the   Harrington  and  Tolk  sites  were  438,129  tons  and  421,719  tons,
respectively,  (approximately  34 and 36 days  supply,  respectively).  TUCO has
executed a long-term coal supply agreement with a subsidiary of Kennecott Energy
Company  to supply  approximately  55% of  Harrington's  projected  requirements
through 2001 from Cordero, Caballo Rojo and Antelope mines located in the Powder
River  Basin.  In  addition,  TUCO  has  contracted  for  approximately  16%  of
Harrington's  1999 projected  requirements with Kennecott's  affiliate,  Colowyo
Coal Company,  from its Colowyo mine located in western Colorado and transported
by the Union Pacific  Railroad.  TUCO has long term contracts with Thunder Basin
Coal  Company,  an  affiliate  of  Arch  Coal  Company,  for  supply  of coal in
sufficient quantities to meet the Company's Tolk Station. Specific coal reserves
in the Powder  River  Basin  have been  dedicated  by Thunder  Basin to meet the
contract quantities.  The Powder River Basin coal supplies for both stations are
transported  for TUCO by the Burlington  Northern Santa Fe Railway  Company over
distances ranging from 900-1,032 miles.  Transportation charges for these Powder
River  Basin Coal  supplies  make up more than 40% of the total cost of the coal
delivered to the boiler.

      See Note 10. Commitments and Contingencies - Purchase Requirements in Item
8.  FINANCIAL  STATEMENTS  AND  SUPPLEMENTARY  DATA  for  information  regarding
financial  commitments  under  the coal  supply  contracts,  as well as the coal
transportation contracts.

Natural Gas and Fuel Oil

      PSCo uses both  firm and  interruptible  natural  gas and  standby  oil in
combustion  turbines and certain boilers.  Natural gas supplies for PSCo's power
plants are procured under short and intermediate term contracts on a competitive
basis to  provide  an  adequate  supply  of fuel.  SPS has a number of short and
intermediate  contracts with natural gas suppliers  operating in gas fields with
long life  expectancies  in or near its service area. SPS also utilizes firm and
interruptible  transportation  to minimize  fuel costs  during  volatile  market
conditions and to provide  reliability of supply.  SPS maintains  sufficient gas
supplies  under short and  intermediate  term  contracts to meet all power plant
requirements;  however,  due to flexible  contract terms,  approximately  40% of
SPS's gas requirements were purchased under spot agreements.

Natural Gas Utility Operations

     During the period 1994-1998,  PSCo and Cheyenne have experienced  growth in
the number of  residential  and commercial  customers  ranging from 2.7% to 3.2%
annually.  Since 1994, residential and commercial gas volumes sold have averaged
131.5 million  dekatherms  ("MMDth")  annually.  The growth of  residential  and
commercial  sales  has been  strong  due to  favorable  economic  conditions  in
Colorado and Wyoming.  PSCo and Cheyenne offer transportation  services to their
large commercial and industrial customers,  allowing these customers to purchase
gas directly from their suppliers.  The per-unit fee charged for  transportation
services, while significantly less than the per-unit fee charged for the sale of
gas to a similar customer, provides an operating margin approximately equivalent
to the margin earned on gas sold.  Therefore,  increases in such activities will
not have as great an impact on gas revenues as increases in deliveries  from the
sale of gas, but will have a positive impact on operating  margin.  During 1998,
transportation services revenues were of $35.0 million compared to $32.7 million
in 1997 and $28.5 million in 1996.

Natural Gas Supply and Storage

      PSCo and Cheyenne have  attempted to maintain low cost,  reliable  natural
gas supplies by optimizing a balance of long - and short-term gas purchase, firm
transportation  and gas  storage  contracts.  During  1998,  PSCo  and  Cheyenne
purchased  140.1 MMDth from  approximately  59 suppliers.  In 1998,  the average
delivered  cost per one thousand  dekatherms  ("MDth") for PSCo and Cheyenne was
$1.89 compared to $2.92 per MDth in 1997 and $2.58 per MDth in 1996 (see Item 7.
MANAGEMENT'S  DISCUSSION  AND  ANALYSIS OF  FINANCIAL  CONDITION  

                                       8
<PAGE>

AND RESULTS OF  OPERATIONS).  Purchased gas costs are recovered  from  customers
through the gas cost adjustment mechanisms.

      PSCo and Cheyenne have completed  substantially  all of their  obligations
related to gas supply  transportation  and storage contracts which resulted from
FERC Order 636. During 1996,  PSCo and Cheyenne  entered into new contracts with
CIG and others for firm  transportation  and gas storage  services with terms of
5-10  years.  Adequate  supplies  of natural  gas are  currently  available  for
delivery  within  the  Rocky  Mountain  region.  PSCo and  Cheyenne  continually
evaluate  the  natural gas markets  and  procure  supplies,  as needed,  to meet
current and anticipated customer demand.

Regulation and Rates

Regulation

General

      The NCE system is subject to the  jurisdiction of the SEC under PUHCA. The
rules and regulations under PUHCA generally limit the operations of a registered
holding company to a single  integrated  public utility system,  plus additional
energy-related  businesses.   PUHCA  rules  require  that  transactions  between
affiliated  companies in a  registered  holding  company  system be performed at
cost, with limited exceptions.

PSCo

      PSCo is  subject  to the  jurisdiction  of the CPUC  with  respect  to its
facilities,  rates,  accounts,  services  and issuance of  securities.  The CPUC
consists of three  full-time  members  appointed by the Governor and approved by
the Colorado Senate. Only two members may be from the same political party.

      PSCo is  subject  to the  jurisdiction  of the DOE  through  the FERC with
respect to its  wholesale  electric  operations  and  accounting  practices  and
policies.  PSCo  has  received  authorization  from  the  FERC to act as a power
marketer. PSCo is also subject to the jurisdiction of the NRC in connection with
the pending transfer of the title of Independent Spent Fuel Storage Installation
facility at Fort St. Vrain.

      PSCo holds a FERC certificate  which allows it to transport natural gas in
interstate  commerce  pursuant to the  provisions  of the  Natural Gas Act,  the
Natural  Gas Policy Act of 1978 and FERC Order  Nos.  436 and 500  without  PSCo
becoming subject to full FERC jurisdiction.

SPS

     The PUCT has  jurisdiction  over  SPS's  Texas  operations  as an  electric
utility  and  original  and  appellate  jurisdiction  over its retail  rates and
services.  The Texas  municipalities  exercise original  jurisdiction over rates
within  their  respective  city  limits.  The NMPRC,  the  Oklahoma  Corporation
Commission and the Kansas Corporation  Commission have jurisdiction with respect
to  retail  rates  and  services  in  their  respective  states.  The  FERC  has
jurisdiction  over SPS's  rates for sales of  electricity  for  resale.  SPS has
received authorization from the FERC to act as a power marketer.

Other

      Cheyenne  is  subject  to the  jurisdiction  of the WPSC.  WGI and TOP are
subject to FERC  jurisdiction.  WGI and TOP each hold a FERC  certificate  which
allows them to  transport  natural gas in  interstate  commerce  pursuant to the
provisions of the Natural Gas Act. e prime and TOG have  authorization  from the
FERC to act as power marketers.

                                       9
<PAGE>

Cost Recovery Mechanisms

PSCo

      At December 31, 1998,  PSCo had four  adjustment  clauses:  the ICA (which
replaced the ECA in 1996),  the GCA, the DSMCA and the QFCCA.  These  adjustment
clauses allow certain costs to be passed  through to retail  customers.  PSCo is
required  to  file  applications  with  the  CPUC  for  approval  of  adjustment
mechanisms in advance of the proposed  effective dates. The applications must be
acted upon before becoming effective.

      The ICA,  which  became  effective  October 1, 1996,  allows for a 50%/50%
sharing of certain fuel and energy cost increases and decreases  among customers
and  shareholders.  PSCo,  through its GCA, is allowed to recover the difference
between  its  actual  costs of  purchased  gas and the  amount  of  these  costs
recovered  under its base rates.  The GCA rate is revised  annually on October 1
and  otherwise  as needed,  to coincide  with  changes in  purchased  gas costs.
Purchased gas costs and revenues received to recover such gas costs are compared
on a monthly basis and differences,  including interest, are deferred. The QFCCA
provides for recovery of purchased capacity costs from certain QF projects,  not
otherwise reflected in base electric rates.

      PSCo, in a collaborative  process with public interest  groups,  consumers
and  industry  has  developed  DSM  programs  (programs  designed to reduce peak
electricity demand,  shift on-peak demand to off-peak hours and provide for more
efficient operation of the electric generation system),  including incentive and
cost  recovery  mechanisms.  The DSMCA clause  permits PSCo to recover DSM costs
over five to seven years while  non-labor  incremental  expenses,  and  carrying
costs associated with deferred DSM costs are recovered on an annual basis.  PSCo
also has implemented a Low-Income Energy Assistance  Program.  The costs of this
energy  conservation  and  weatherization  program for low-income  customers are
recoverable through the DSMCA.

SPS

      Fuel and purchased  power costs are  recoverable  in Texas through a fixed
fuel factor  which is part of SPS's  rates.  If it appears  that the factor will
materially  over-recover or under-recover these costs, the factor may be revised
upon  application by SPS or action by the PUCT. The rule requires  refunding and
surcharging under/over-recovery amounts, including interest, when they exceed 4%
of the utility's  annual fuel and purchased power costs, as allowed by the PUCT,
if this condition is expected to continue. Under the PUCT's regulations,  SPS is
required to file an application for the PUCT to retrospectively  review at least
every  three  years the  operations  of SPS'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 three year period ended December 31, 1997.

      On October 24, 1997,  the NMPRC approved a fixed fuel factor for SPS's New
Mexico  retail  jurisdiction,   effective  in  January  1998.  This  employs  an
over/under fuel collection  calculation  determined on a monthly basis. SPS will
petition  for a change  in the fixed  fuel  factor  if the  over/under  recovery
balance  reaches  $5  million.  In  addition,  on an  annual  basis SPS files an
application for the NMPRC to review the utility's  electric  generation and fuel
management  activities.  The  methodology  of the over/under  calculation,  plus
interest, is similar to the Texas fixed fuel factor calculation discussed above.

      In all other  jurisdictions,  SPS  currently  recovers  substantially  all
increases and refunds  substantially  all decreases in fuel and purchased  power
costs pursuant to monthly adjustment and clauses.

Cheyenne

      Purchased  power and gas costs are  recoverable  in  Wyoming.  Cheyenne is
required  to  file  applications  with  the  WPSC  for  approval  of  adjustment
mechanisms  in advance of the proposed  effective  date.  Cheyenne  filed for an
increase in its ECA rates of  approximately $3 million which became effective on
January 1, 1999.  The  increase,  however,  is being  contested and hearings are
scheduled for March 1999.
                                       10
<PAGE>

      See Note 9.  Regulatory  Matters  in Item 8.  FINANCIAL  STATEMENTS  AND
SUPPLEMENTARY DATA for additional discussion.

Environmental Matters

      Certain of the Company's  subsidiary  facilities  are regulated by federal
and state  environmental  agencies.  These agencies have  jurisdiction  over air
emissions,  water  quality,  wastewater  discharges,  solid wastes and hazardous
substances. Various Company activities require registrations, permits, licenses,
inspections  and  approvals  from these  agencies.  The Company has received all
necessary  authorizations  for the construction  and continued  operation of its
generation,  transmission and distribution systems. Company facilities have been
designed and constructed to operate in compliance with applicable  environmental
standards.

      The Company and its subsidiaries  continue to strive to achieve compliance
with all  environmental  regulations  currently  applicable  to its  operations.
However,  it is not  possible at this time to  determine  when or to what extent
additional facilities or modifications of existing or planned facilities will be
required as a result of changes to environmental regulations, interpretations or
enforcement  policies or, generally,  what effect future laws or regulations may
have upon the Company's operations. See Note 10. Commitments and Contingencies -
Environmental  Issues in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA for
additional  discussion.  At December 31, 1998, the estimated 1999, 2000 and 2001
expenditures for  environmental  air and water emission control  facilities were
$19.1  million,  $14.1  million  and $38.6  million,  respectively  (see Item 7.
MANAGEMENT'S  DISCUSSION  AND  ANALYSIS OF  FINANCIAL  CONDITION  AND RESULTS OF
OPERATIONS).

Construction Program

      Discussion of the construction  programs for each registrant is provided
within  their  respective  Item 7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

Competition

Industry Outlook

      The business and regulatory  environment in the utility  industry that has
existed  for  decades  is  continuing  to  change.  Competition  is  increasing,
particularly in energy supply and retail energy services.  Several states in the
U.S.  have  either  passed or  proposed  legislation  that  provides  for retail
electric  competition  and price  deregulation  of energy supply.  The wholesale
electric  energy  market has expanded and  geographic  boundaries  are no longer
present  barriers.  Increased  activity by power marketers and traders has added
new  dimensions  of  complexity  and risk.  A  significant  amount  of  electric
generation  assets have been  purchased,  sold or traded in the U.S. during 1998
and this trend is expected to continue.  Consolidation  and  globalization  is a
continuing  trend  as  businesses  position  themselves  for  competition  in an
unbundled energy industry.  The Company  continues to look for  opportunities to
expand its customer base as an energy service provider, and on an ongoing basis,
evaluates merger, acquisition and divestiture opportunities.

      Electric prices in the Company's service territories are low in comparison
to other parts of the U.S. State  legislatures and state utility  commissions in
the  retail  jurisdictions  served by the  Company's  utility  subsidiaries  are
focusing on the restructuring and deregulation of the electric utility industry;
however, no significant  progress was achieved during 1998. The Company supports
a fair and orderly transition to a competitive environment and believes that any
restructuring  plans should  provide the Company with an  opportunity to recover
its costs for prudently incurred utility investments and contractual commitments
that may be uneconomic  in the future.  Overall,  the Company  believes that the
prices its  utility  subsidiaries  charge for  electricity  and the  quality and
reliability  of their  service  currently  place them in a  position  to compete
effectively in the energy market.  The potential  negative  financial impacts of
deregulation,  however,  could include an impairment of assets, a loss of retail
customers,  lower  profit  margins and  increased  costs of capital (see Note 1.
Summary of Significant  Accounting Policies in Item 8. FINANCIAL  STATEMENTS AND
SUPPLEMENTARY  DATA).  At this time,  the Company  and its utility  subsidiaries
cannot  predict  when  they  will  be  subject  to  changes  in  legislation  or
                                       11
<PAGE>

regulation,  nor can they predict the impacts of such changes on their financial
position, results of operations or cash flows.

Retail Electric Business

      Today,  the retail  electric  business  faces  increasing  competition  as
industrial and large commercial customers who have the ability to own or operate
facilities  to generate  their own electric  energy  requirements.  In addition,
customers  may have the option of  substituting  fuels,  such as natural gas for
heating,  cooling and manufacturing purposes rather than electric energy, or the
option of relocating their facilities to a lower cost environment. While each of
the Company's utility  subsidiaries face these  challenges,  these  subsidiaries
believe their rates are competitive with currently available  alternatives.  The
Company's  utility  subsidiaries are taking actions to lower operating costs and
are working with their customers to analyze the feasibility of various  options,
including energy efficiency, load management and cogeneration in order to better
position the Company's  utility  subsidiaries to more  effectively  operate in a
competitive environment.

State Regulatory and Legislative Environments - Electric Business

      Below  is a  discussion  on the  regulatory  and  legislative  initiatives
currently being addressed in each of the Company's retail jurisdictions  related
to the electric business.

      Colorado - Colorado  law permits the CPUC to  authorize  rates  negotiated
with  individual  electric and gas customers who have  threatened to discontinue
using the services of PSCo,  so long as the CPUC finds that such  authorization:
1) in the case of electric  rates,  will not adversely  affect PSCo's  remaining
customers  and 2) in the case of gas  rates,  will not affect  PSCo's  remaining
customers as adversely as would the alternative.  The CPUC is continuing to work
with the Colorado General Assembly in its  investigation  and  implementation of
public  policy.  The  CPUC  has  no  electric  restructuring  authority  without
legislative mandate.

      During 1998, an electric restructuring bill was passed which established a
30 member advisory panel to conduct an evaluation of the potential  benefits and
possible regulatory structure of the retail electric industry.  This panel is to
finalize  and report its  findings to the General  Assembly  and the Governor by
November 1, 1999. NCE has one representative appointed to this panel.

      Texas  - In the  1997  session,  Texas  introduced  legislative  proposals
relating to retail wheeling;  however,  the Texas legislature  adjourned without
adopting any  legislation on this issue.  The Governor  submitted a proposal for
retail   competition  by  September  2001.  This  and  all  other   deregulation
legislation  failed to gain the necessary  support for  enactment.  There was no
general session in 1998 in Texas. The PUCT initiated  several  rulemakings which
prepare for eventual electric industry  restructuring,  however,  it has not yet
issued a final order with respect to any of them.  The PUCT granted  approval of
one utility company's voluntary plan to transition to retail  competition.  This
program  provides for immediate rate reductions which will result in refunds for
all residential  and commercial  customers.  A five-year  transition plan begins
with a pilot program that evolves to customer  choice for all of that  utility's
customers by 2003.

      A Senate  Interim  Committee  on Electric  Utility  Restructuring  began a
series of statewide  hearings in late 1997, which continued  throughout 1998, in
order to solicit public input on a series of statewide issues relating to retail
competition  in Texas.  This  information  will be used by the Committee to make
recommendations  on restructuring  legislation for the 1999 session.  In January
1999, three different electric  restructuring bills were introduced in the Texas
legislative.  At this time, it is impossible to determine  which, if any, of the
proposals  will  pass.  SPS  believes  it will  continue  to be  subject to rate
regulation  that will  allow for  recovery  of its  deferred  costs (see Note 1.
Summary of Significant  Accounting  Policies - Business,  Utility Operations and
Regulation - Regulatory Assets and Liabilities and Note 9. Regulatory Matters in
Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

      New  Mexico - In 1998,  the NMPRC  allowed  an  electric  utility to begin
offering a two-year  transition test program for customer choice. A total of 425
residential and small commercial customers and one large

                                       12
<PAGE>

industrial customer may participate.  A second pilot program,  which was ordered
by the NMPRC, was halted by a stay order issued by the New Mexico Supreme Court.

      Following  the  1997  session,   the  NMPRC   initiated   Case  2681,  the
"Investigation   of  Electric  Utility   Restructuring",   which  called  for  a
"collaborative process" that involved utilities,  consumer groups, environmental
groups, and other interested  stakeholders.  The NMPRC encouraged the parties to
attempt to reach a consensus  on a retail  choice  plan for New Mexico,  but the
effort was unsuccessful.  On January 28, 1998, the NMPRC issued its final report
and found  that it is in the  public  interest  for the  State of New  Mexico to
advance  changes in the  structure and  regulation of the electric  industry and
recommended  that  restructuring  proposals should continue to be brought before
the legislature.  The New Mexico legislature tabled  consideration of the single
electric  utility  restructuring  bill presented during 1998. A similar proposal
has been introduced in the 1999 session.  At this time, no final action has been
taken on this proposal.

      Wyoming  -  There  were no  electric  industry  restructuring  legislation
proposals  introduced in the  Legislature  during 1998. A joint committee of the
Wyoming  legislature held a series of hearings on restructuring in June of 1997.
On September 15, 1997, a report  entitled the "Study of the  Potential  Economic
Impacts of Electric  Restructuring  on the State of  Wyoming,"  prepared for the
WPSC by an  external  consultant  was made  public.  The  report  analyzed  four
different restructuring scenarios and concluded overall that restructuring would
have  only a  small  impact  on  rates.  No  action  with  respect  to  electric
restructuring is anticipated in 1999.

      Kansas - In December 1997, the Task Force On Retail Wheeling presented its
final report to the 1998 Kansas Legislature.  The report culminated a study that
was  authorized  by House Bill 2600 and was signed by the  Governor on April 26,
1996.  In  general,  this  legislation  imposed  a  three-year  freeze on retail
electric wheeling.  During 1998, several restructuring  measures were introduced
in the Legislature, but subsequently failed.

      Oklahoma  - The  Electric  Restructuring  Act of 1997  was  signed  by the
Governor of Oklahoma on April 25,  1997.  This  legislation  directs a series of
studies which will define the orderly  transition to consumer choice of electric
energy  supplier  by  July  1,  2002.  During  1998,  the  Oklahoma  Corporation
Commission  began such studies and held  research  meetings  focusing on several
restructuring issues.  Results and recommendations  derived from the studies and
meetings will direct further  legislative  action that may be necessary in order
for  the  Electric  Restructuring  Act  of  1997  to be  fully  implemented.  An
independent  system  operator  ("ISO")  study  report,  prepared by the Oklahoma
Corporation  Commission,  was issued in January 1998.  The Oklahoma  Corporation
Commission  Taxation Issues study and a Technical Issues study on the effects of
an ISO were concluded on December 31, 1998. The Electric  Restructuring  Act was
modified  during 1998 to clarify  terms used in the  original  bill,  as well as
advancing  timelines  for studies of the Joint  Electric  Utility  Task Force in
order to meet the stated  implementation date. In December 1998, this Task Force
began the formation of groups which will examine numerous  restructuring issues.
It is expected to issue a report on its findings in October 1999.

Wholesale Electric

     The wholesale electric business faces increasing  competition in the supply
of bulk power due to provisions  of the EPAct and Federal and state  initiatives
with respect to providing  open access to utility  transmission  systems.  Under
applicable FERC rules,  utilities are required to provide wholesale  open-access
transmission  services  consistent  with  what  is  provided  for in  their  own
operations and to unbundle wholesale merchant and transmission  operations.  The
Company's utility  subsidiaries are operating under a joint tariff in compliance
with these rules.  To date,  these  provisions have not had a material impact on
the operations of the Company's  utility  subsidiaries.  For 1998, the Company's
consolidated  wholesale  revenues totaled  approximately  $607 million or 22% of
total electric  revenues,  an increase from approximately $435 million or 18% in
1997.   Non-firm  sales,   including   economy  sales,   off-system   sales  and
non-regulated power marketing  activities have grown significantly in 1998. As a
result,  only 56.3% of the Kwh sold related to firm sales  contracts in 1998, as
compared  with  80.9% in 1997,  despite  the fact  that  Kwh  sales  under  firm
contracts increased 14% in 1998 as compared with 1997.

                                       13
<PAGE>
Natural Gas

      Changes in  regulatory  policies and market forces have begun to shift the
industry   from   traditional   bundled  gas  sales   service  to  an  unbundled
transportation and market based commodity  service.  Following the unbundling of
interstate pipeline delivery services by the FERC in 1993, PSCo has participated
fully in state  regulatory  and  legislative  efforts to develop a framework for
extending  unbundling down to the residential and small  commercial  level.  The
goal of  unbundling  is to offer  customers  choice  of gas  suppliers.  PSCo is
currently  supporting  a  gas  unbundling  bill,   introduced  to  the  Colorado
legislature  in  January  1999,  that will grant to the CPUC the  authority  and
responsibility to approve  voluntary  unbundling plans submitted by Colorado gas
utilities in the future. PSCo plans to participate fully in any such legislative
efforts and in any  regulatory  proceedings  which will affect the unbundling of
natural gas delivery services.

      The  natural  gas  delivery  or   transportation   business  has  remained
competitive  as industrial  and large  commercial  customers have the ability to
"by-pass" the local gas utility  through the  construction  of  interconnections
directly  with,  and the purchase of gas directly  from,  interstate  pipelines,
thereby avoiding the delivery  charges added by the local gas utility.  PSCo and
Cheyenne have and will continue to  aggressively  pursue the retention of all of
these customers on their systems.

      PSCo and Cheyenne extend and operate their distribution  systems primarily
by virtue of non-exclusive  franchises  granted by the various cities and towns.
Such franchise  agreements are approved by their respective  state  commissions.
Because the  franchises are  non-exclusive,  PSCo and Cheyenne can be faced with
the threat of  intrusion  into their gas  territory by third  parties.  PSCo and
Cheyenne  hold  territorial  certificates  for a portion  of their  gas  service
territory  giving them the exclusive right to extend their  distribution  system
and  provide  natural gas sales and  transportation  service.  However,  for the
majority of their gas service territory, no such territorial certificates exist.
PSCo has filed  with the CPUC an  application  to  certificate  its gas  service
territory along the front range of Colorado.

Franchises

      PSCo held  nonexclusive  franchises to provide  electric or gas service or
both services in approximately 121 incorporated cities and towns at December 31,
1998.  These  franchises  consist  of  69  combined  gas  and  electric  service
franchises,  28 electric service  franchises and 24 gas service  franchises.  In
1999, PSCo expects to re-negotiate  four of the franchise  agreements which will
be expiring.  PSCo's franchise with the City of Denver will expire in 2006. PSCo
supplies  electric or gas service or both  services in about 114  unincorporated
communities.

      SPS held  franchises  to provide  electric  service in  approximately  104
cities and towns at December 31, 1998.

Foreign Investments

Yorkshire Power

      During  the second  quarter  of 1997,  Yorkshire  Power,  a joint  venture
initially  equally  owned  by  PSCo  and  AEP,  acquired  indirectly  all of the
outstanding ordinary shares of Yorkshire Electricity,  a United Kingdom regional
electricity  company.  Effective March 31, 1998, NCI was sold to NC Enterprises,
an NCE subsidiary. The total consideration paid by Yorkshire Power for Yorkshire
Electricity  in  1997  was  approximately   $2.4  billion  (1.5  billion  pounds
sterling).  Yorkshire  Electricity's  main businesses are the  distribution  and
supply of electricity and the supply of gas and its service  territory is one of
the region's largest with approximately 2 million customers.

      In July  1997,  the U.K.  government  enacted a  windfall  tax on  certain
privatized  business  entities,  payable in two  installments  with the first in
December  1997  and  the  second  in  December  1998.  The  windfall  tax  was a
retroactive  adjustment to the privatization  value based on  post-privatization
profits  during  the 1992 to 1995

                                       14
<PAGE>
period.   During  the  third  quarter  of  1997,  Yorkshire  Power  recorded  an
extraordinary charge of approximately $221 million (135 million pounds sterling)
for this windfall tax. The Company's share of this tax was approximately  $110.6
million.

      During the second  quarter of 1998,  Yorkshire  Electricity  recognized  a
$54.7  million  after-tax  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
facilities had been  unsuccessful.  The  impairment,  reflecting a write-down to
fair market  value,  was offset,  in part,  by an unrelated  tax  adjustment  of
approximately  $21.5  million.  In the fourth quarter of 1998,  Yorkshire  Power
recognized a $42.1 million after-tax gain on the sale of its generation  assets.
Yorkshire  Electricity  is focusing its main  business on the  distribution  and
supply of electricity  and the supply of natural gas. See Note 2.  Investment in
Yorkshire  Electricity and U.K. Windfall Tax in Item 8. FINANCIAL STATEMENTS AND
SUPPLEMENTARY DATA for summary financial information on Yorkshire Power.

Other foreign investments

      The Company owns other foreign investments  through various  non-regulated
subsidiaries;  however,  at this time, these  investments are not significant to
the Company's consolidated assets or results of operations.

Service Company

      NCS, a wholly-owned  subsidiary of NCE, was incorporated in 1997 under the
laws of the State of Delaware. NCS is the service company for the NCE system and
provides a variety of  administrative,  management,  engineering,  construction,
environmental and support services.  NCS provides its services to the NCE system
generally  at cost,  pursuant  to service  agreements  approved by the SEC under
PUHCA.

Non-Utility Operations

      NC Enterprises, a wholly-owned subsidiary of NCE, was incorporated in 1997
under the laws of the State of Delaware.  NC  Enterprises  was  incorporated  to
serve as a holding company for non-utility  subsidiaries and foreign  operations
of NCE. NC Enterprises currently has the following subsidiaries: NCI, Quixx, UE,
e prime, Natural Fuels,  Planergy,  New Century Cadence and New Century Centrus.
The table presented below provides certain financial  information regarding each
subsidiary of NC Enterprises,  followed by a discussion of the operations of the
subsidiaries.
<TABLE>
<CAPTION>
                                                                            New      New
                                                     Natural               Century  Century
                       NCI    Quixx   UE    e prime   Fuels    Planergy    Cadence  Centrus          
                      -----   -----  ----   -------  ------   ---------    -------- -------
                                                    (in millions)

<S>                  <C>      <C>   <C>     <C>      <C>        <C>         <C>      <C>
Operating revenues   $   -    $14.6 $106.3  $255.4   $ 7.6      $ 9.3       $  -     $ -
Total assets         353.7     88.2   58.5    81.5    10.2       31.4          2.1     0.7
NC Enterprise's Net
 investment at
 12/31/98            349.6     78.0   44.8    27.8     3.5       12.0          1.6     0.8
</TABLE>


      NCI:  NCI was formed in 1997 to hold PSCo's 50%  interest  in  Yorkshire
Power.  For a more detailed discussion refer to "Foreign Investments" above.

      Quixx:  Quixx  was  incorporated  in 1985  under  the laws of the State of
Texas. Quixx's primary business is investing in and developing  cogeneration and
energy-related  projects.  Quixx  also holds  water  rights  and  certain  other
non-utility  assets.  Quixx also finances  sales of heat pumps and markets other
non-utility goods and services.  Quixx currently has the following  wholly-owned
subsidiaries, most of which hold partnership interests in various energy-related
limited partnerships:

      Quixx  Jamaica,  Inc., a  wholly-owned  subsidiary  of Quixx,  holds a 99%
limited  partnership  interest  in KES  Jamaica,  L.P.  which  owned a  facility
consisting of two-oil fired combustion turbines located in Montego


                                       15
<PAGE>
Bay,  Jamaica,  W.I.  This  facility  was  completely  dismantled  in 1998.  The
remaining  1%  general  partnership  interest  is owned by KES  Montego,  Inc. a
wholly-owned  subsidiary  of Quixx.  As of December  31,  1998,  Quixx is in the
process of winding up operations of this subsidiary.

      Quixx Mustang  Station,  Inc., a  wholly-owned  subsidiary  of Quixx,  was
created to hold Quixx's 0.5%, general partnership interest in Denver City Energy
Associates,  L.P., a partnership which owns a 50% interest in Mustang Station, a
488 Mw combined cycle  generating  facility which is scheduled for completion in
1999.  Quixx also holds a 49.5%  limited  partnership  interest  in Denver  City
Energy Associates, L.P., through Quixx Resources, Inc. a wholly-owned subsidiary
of Quixx.

      Quixxlin  Corp, a wholly-owned  subsidiary of Quixx,  holds a 0.5% general
partnership interest in Quixx Linden, L.P., which owns a 23 Mw natural gas fired
cogeneration  facility under construction in Linden, New Jersey. It is estimated
that this facility will be completed in early 1999.  Quixx also directly holds a
49.5% limited partnership interest in Quixx Linden, L.P.

      Quixx Borger Cogen,  Inc., a  wholly-owned  subsidiary  of Quixx,  holds a
0.45% general partnership interest in Borger Energy Associates, L.P., which owns
Blackhawk  Station,  a  cogeneration  plant  located at the  Phillips  Petroleum
Refinery  Complex near Borger,  Texas.  Quixx  Resources,  Inc., a  wholly-owned
subsidiary of Quixx,  holds a 44.55% limited  partnership  interest in this same
partnership.  This  facility  commenced  Phase I electric  operations in October
1998, and is expected to commence Phase II cogeneration operations in 1999.

      Quixx  WPP94,  Inc., a  wholly-owned  subsidiary  of Quixx,  holds a 0.33%
general  partnership  interest  in  Windpower  Partners,   1994  L.P.  Windpower
Partners,  1994 L.P. owns a 35 Mw wind generation  facility in Culberson County,
Texas.  Quixx also  directly  holds a 24.67%  limited  partnership  interest  in
Windpower Partners, 1994 L.P.

      Quixx  Louisville,  L.L.C.,  a  wholly-owned  subsidiary of Quixx,  owns a
facility  consisting of two gas-fired  boilers providing steam to a DuPont plant
in Louisville, Kentucky.

      Quixx Power Services,  Inc., a wholly-owned  subsidiary of Quixx, operates
and maintains certain cogeneration facilities.

      Quixx Resources,  Inc., a wholly-owned subsidiary of Quixx, holds a 44.55%
limited partnership interest in Borger Energy Associates,  L.P., a 49.5% limited
partnership  interest in Denver City Energy Associates,  L.P., and a 99% limited
partnership interest in Quixx WRR, L.P.

      Quixx WRR, L.P., a wholly-owned  subsidiary of Quixx,  holds Quixx's water
rights located in Roberts,  Gray,  Hutchinson and Carson Counties,  Texas. Quixx
holds a 1% general partnership interest and through Quixx Resources,  Inc. a 99%
limited partnership interest in Quixx WRR, L.P.

      Quixx  Carolina,  Inc., a  wholly-owned  subsidiary  of Quixx,  holds a 1%
general  partnership  interest  in  Carolina  Energy  Limited   Partnership,   a
waste-to-energy  cogeneration  facility.  Quixx  also  holds  a  32.33%  limited
partnership interest in this same partnership. In June 1997, Quixx wrote off its
investment  of  approximately  $13.64  million in the  Carolina  Energy  Limited
Partnership  (see Note 3.  Acquisitions  and  Divestitures  in Item 8. FINANCIAL
STATEMENTS AND SUPPLEMENTARY DATA).

      Quixx holds a 42.2%  limited  partnership  interest in BCH Energy  Limited
Partnership,  a waste-to-energy  facility, which has declared in bankruptcy near
Fayetteville,  North  Carolina.  In  December  1996,  Quixx wrote off its entire
investment  in  this  project  of   approximately   $16  million  (See  Note  3.
Acquisitions and Divestitures in Item 8. FINANCIAL  STATEMENTS AND SUPPLEMENTARY
DATA).

      UE: UE was  incorporated  in 1985 under the laws of the State of Texas. UE
is  engaged  in   engineering,   design,   construction   management  and  other
miscellaneous services. UE currently has two wholly-owned subsidiaries Universal
Utility  Services  Company and Precision  Resource  Company.  Universal  Utility
Services 

                                       16
<PAGE>
Company provides cooling tower maintenance and repair,  certain other industrial
plant  improvement  services,  and engineered  maintenance of high voltage plant
electric  equipment.  Precision Resource Company provides contract  professional
and technical resources for customers in the energy industrial sectors.

      e prime: e prime was  incorporated  in 1995 under the laws of the State of
Colorado.  e prime provides energy related  products and services which include,
but are not limited to,  electric and gas  brokering,  marketing and trading and
energy  consulting.  In March of 1996, e prime received  authorization  from the
FERC to act as a power marketer.  In September 1996, e prime acquired TOG, a gas
marketing company, with headquarters in Houston and an office in Boston. e prime
and TOG have merged  operations  and together  they provide  value-added  energy
related  products and  services to over 2,200 end use  customers  and  utilities
nationwide.  Additionally,  e prime  currently  owns the following  subsidiaries
(subsidiaries formed, but inactive have been excluded):

      TOP is a small  pipeline  company  which  connects  two  major  interstate
pipelines.

      YGSC owns a 47.5% general partnership interest in Young Storage which owns
and operates an underground gas storage facility in northeastern Colorado.

      e prime also holds a 50% ownership interest in Johnstown  Cogeneration,  a
limited liability company.

      Natural Fuels:  Natural Fuels was  incorporated  in 1990 under the laws of
the  State  of  Colorado.  Natural  Fuels  sells  compressed  natural  gas  as a
transportation fuel to retail markets,  converts vehicles for natural gas usage,
constructs  fueling  facilities,   and  sells  miscellaneous   fueling  facility
equipment.  Natural Fuels has a 50% ownership interest in Natural/Total  Limited
Liability Company,  which owns and operates natural gas fueling stations located
at Total  Petroleum Gas Stations in Colorado.  Natural Fuels has a 25% ownership
interest in  Natural/Peoples  Limited  Liability Company which owns and operates
one natural gas fueling station located in Castle Rock, Colorado.  Additionally,
Natural  Fuels  has  a  67%  ownership   interest   through   Natural/Total   in
Natural/Total/KN  Limited  Partnership,  a  partnership  which owns the  profits
interest in the natural gas fueling stations located at Total Petroleum sites in
the Colorado towns of Grand Junction and Glenwood Springs.

     Planergy:  Planergy,  which was acquired April 1, 1998  (formerly  known as
Falcon Seaboard Energy Services,  Inc.), was incorporated in 1990 under the laws
of the State of Texas.  Planergy  provides  energy  management,  consulting  and
demand side management services to commercial, industrial, utility and municipal
customers.  Planergy  currently  has two  principal  wholly-owned  subsidiaries,
Planergy,  Inc.,  and Planergy  Services,  Inc.  Planergy Inc.  provides  energy
consulting,  energy-efficiency management, conservation programs and mass-market
services.  Planergy Services,  Inc. specializes in industrial energy audits, and
conservation  and  reliability  projects.  It  focuses  on energy  services  for
industrial and large commercial customers.

      New Century  Cadence:  New  Century  Cadence  was  incorporated  in 1997
under the laws of the State of  Colorado.  New Century  Cadence was created to
hold a 1/3 interest in Cadence Network,  LLC, an energy-related  company which
provides energy management and consulting  services,  as well as brokering and
marketing of energy  commodities.  Cadence Network LLC is equally owned by New
Century  Cadence,  Cinergy-Cadence,  Inc. (a subsidiary of Cinergy,  Inc.) and
Progress Holdings, Inc. (a subsidiary of Florida Progress Holdings, Inc.).

      New Century  Centrus:  New  Century  Centrus  was  incorporated  in 1998
under the laws of the State of  Colorado.  New Century  Centrus was created in
1998 to hold a 1/3 interest in Centrus,  LLP.  Centrus LLP was  established to
develop  products  and  services to meet the  residential  and small  business
customers  increasing demands for a "one-bill" utility and  telecommunications
approach.   Centrus   LLP  is   equally   owned   by  New   Century   Centrus,
Cinergy-Centrus,  Inc. (a subsidiary of Cinergy,  Inc.) and  Progress-Centrus,
Inc. (a subsidiary of Florida Progress Holdings, Inc.).

                                       17
<PAGE>

Employees

The number of employees in the NCE system at December 31, 1998,  is presented in
the table below. Of the employees listed below, approximately 2,817, or 45%, are
covered under collective  bargaining  agreements.  For further information,  see
Note 10.  Commitments  and  Contingencies - Union Contracts in Item 8. FINANCIAL
STATEMENTS AND SUPPLEMENTARY DATA.

                             NCE System Employees
                             --------------------

                        PSCo                    3,148
                        SPS                     1,345
                        NCS                     1,229
                        Cheyenne                   97
                        NC Enterprises            490
                                                 ----
                          Total                 6,309
                                                =====

                                       18
<PAGE>


                Consolidated Electric Operating Statistics (NCE)

                                                 Year Ended December 31,
                                           1998          1997          1996  
                                           ----          ----          ----
Energy Generated, Received & Sold
 (Thousands of Kwh):
Net Generated:
  Steam, Fossil..................       33,960,532    33,278,721    32,116,961
  Combustion Turbine.............        8,211,645     6,595,055     6,351,117
  Pumped Storage.................          222,175       193,834       178,205
  Hydro..........................          206,287       224,898       197,660
                                           -------       -------      --------
    Total Net Generation.........       42,600,639    40,292,508    38,843,943
  Energy Used for Pumping........          343,393       300,649       276,983
                                           -------       -------      --------
    Total Net System Input.......       42,257,246    39,991,859    38,566,960
  Purchased Power and Net
    Interchange .................       17,066,272    11,985,546    10,295,074 
                                        ----------    ----------    ----------
    Total System Input...........       59,323,518    51,977,405    48,862,034
  Used by Company................           75,303        77,734        88,304
  Other (1)......................        1,739,911     1,677,085     1,352,843
                                        ---------      ---------     ---------
    Total Energy Sold............       57,508,304    50,222,586    47,420,887
                                        ==========    ==========    ==========

Electric Sales (Thousands of Kwh):
  Residential....................       10,136,581     9,730,390     9,530,275
  Commercial.....................       14,135,012    13,223,936    12,832,091
  Industrial.....................       13,530,830    13,789,814    13,729,777
  Public Authorities.............          840,611       773,656       780,251
  Wholesale - Regulated..........       15,948,594    11,494,742    10,129,788
  Wholesale Energy Services -
    Non-Regulated                        2,916,676     1,210,048       418,705
                                         ---------     ---------       -------
    Total Energy Sold............       57,508,304    50,222,586    47,420,887
                                        ==========    ==========    ==========

Number of Customers at End
 of Period:
  Residential....................       1,313,075      1,285,307     1,269,322
  Commercial.....................         190,812        185,911       183,928
  Industrial.....................          12,956         12,888        12,830
  Public Authorities.............          83,775         81,994        80,486
  Wholesale - Regulated..........             317            279           235
  Wholesale Energy Services - 
    Non-Regulated ...............              27             12             6
                                           ------       --------       -------
      Total Customers............       1,600,962      1,566,391     1,546,807
                                        =========      =========     =========

Electric Revenues
 (Thousands of Dollars):
  Residential....................      $  720,841     $  692,886    $  682,966
  Commercial.....................         774,521        735,636       738,266
  Industrial.....................         524,645        532,276       521,843
  Public Authorities.............          63,249         58,235        55,608
  Wholesale - Regulated..........         532,431        412,088       376,315
  Wholesale Energy Services - 
    Non-Regulated ...............          74,518         22,861         7,806
  Other Electric Revenues........           7,281         19,377        33,735
                                          -------        -------      --------
    Total Electric Revenues......      $2,697,486     $2,473,359    $2,416,539
                                       ==========     ==========    ==========

Average Annual Kwh Sales per 
  Residential Customer                      7,818          7,613         7,508
Average Annual Revenue per
  Residential Customer                    $555.94        $542.12       $538.06
Average Residential Revenue 
  per Kwh                                 $0.0711        $0.0712       $0.0717
Average Commercial Revenue
  per Kwh                                 $0.0548        $0.0556       $0.0575
Average Industrial Revenue
  per Kwh                                 $0.0388        $0.0386       $0.0380
Average Wholesale - Regulated
 Revenue per Kwh                          $0.0334        $0.0359       $0.0371
- -------------------------

(1) Primarily includes net distribution and transmission line losses.


                                       19
<PAGE>


              Consolidated Electric Operating Statistics (PSCo)

                                                Year Ended December 31,
                                            1998        1997(1)       1996(1)   
                                         --------      ---------     ---------

Energy Generated, Received & Sold
 (Thousands of Kwh):
Net Generated:
  Steam, Fossil..................       17,939,109    17,586,343    17,099,890
  Combustion Turbine.............          636,455       154,019       121,079
  Pumped Storage.................          222,175       193,834       178,205
  Hydro..........................          206,287       224,898       197,660
                                           -------       -------      --------
    Total Net Generation.........       19,004,026    18,159,094    17,596,834
  Energy Used for Pumping........          343,393       300,649       276,983
                                           -------       -------      --------
    Total Net System Input.......       18,660,633    17,858,445    17,319,851
  Purchased Power and Net
   Interchange                          13,544,768    11,470,535    10,349,298
                                        ----------    ----------    ----------
    Total System Input...........       32,205,401    29,328,980    27,669,149
  Used by Company................           45,857        45,492        57,603
  Other (2)......................        1,707,914     1,659,347     1,352,843
                                         ---------     ---------     ---------
    Total Energy Sold............       30,451,630    27,624,141    26,258,703
                                        ==========    ==========    ==========
Electric Sales (Thousands of Kwh):
  Residential....................        6,760,764     6,662,679     6,606,601
  Commercial.....................       10,778,116    10,109,615     9,880,502
  Industrial.....................        4,831,965     5,511,722     5,791,608
  Public Authorities.............          206,985       189,141       200,070
  Wholesale - Regulated .........        7,873,800     4,490,895     3,361,217
  Wholesale Energy Services -
    Non-Regulated                                -       660,089       418,705
                                           -------      --------       -------
    Total Energy Sold............       30,451,630    27,624,141    26,258,703
                                        ==========   ===========    ==========
Number of Customers at End
 of Period:
  Residential....................          970,217       947,017       959,249
  Commercial.....................          127,386       123,839       126,426
  Industrial.....................              325           330           380
  Public Authorities.............           82,764        81,023        79,725
  Wholesale - Regulated..........               50            33            26
  Wholesale Energy Services -
    Non-Regulated                                -             -             6
                                           -------      --------       -------
      Total Customers............        1,180,742     1,152,242     1,165,812
                                         =========     =========     =========
Electric Revenues (Thousands
 of Dollars):
  Residential....................       $  514,235    $  503,727    $  507,233
  Commercial.....................          592,045       563,439       571,536
  Industrial.....................          207,885       228,925       249,774
  Public Authorities.............           29,546        26,778        25,798
  Wholesale - Regulated..........          250,555       145,561       120,478
  Wholesale Energy Services -
    Non-Regulated                                -        10,448         7,806
  Other Electric Revenues........           41,307         6,318         6,365
                                           -------       -------      --------
    Total Electric Revenues......       $1,635,573    $1,485,196    $1,488,990
                                        ==========    ==========    ==========

Average Annual Kwh Sales per
 Residential Customer                        7,071         6,875         6,965
Average Annual Revenue per
 Residential Customer                      $537.80       $519.08       $534.79
Average Residential Revenue
 per Kwh                                   $0.0761       $0.0756       $0.0768
Average Commercial Revenue
 per Kwh                                   $0.0549       $0.0557       $0.0578
Average Industrial Revenue
 per Kwh                                   $0.0430       $0.0415       $0.0431
Average Wholesale - Regulated
 Revenue per Kwh                           $0.0318       $0.0324       $0.0358
- -------------------------

(1)The 1996 and 1997  information  through  July 31,  1997  include  information
   related to Cheyenne,  WGI and e prime. These subsidiaries were transferred to
   NCE, effective August 1, 1997, in connection with the Merger.
(2) Primarily includes net distribution and transmission line losses.


                                       20
<PAGE>


               Consolidated Electric Operating Statistics (SPS)

<TABLE>
<CAPTION>
                                          Year ended            September 1-   Year ended
                                          December 31,          December 31,    August 31,
                                         1998        1997          1996           1996 
                                         ----        ----          ----           ---- 
<S>                                   <C>         <C>           <C>           <C>
Energy Generated, Received & Sold
 (Thousands of Kwh):
Net Generated:
  Steam, Fossil..................     16,021,423   15,692,378    4,994,294     14,895,995
  Combustion Turbine.............      7,575,190    6,441,036    1,747,556      6,186,155   
                                       ---------    ---------    ---------     ----------
    Total Net Generation.........     23,596,613   22,133,414    6,741,850     21,082,150
Purchased Power and Net
 Interchange                            (276,031)    (402,504)     332,644      1,226,976
                                        --------     --------      -------      ---------
    Total System Input...........     23,320,582   21,730,910    7,074,494     22,309,126
  Used by Company and Other......         28,606       31,862      438,190      1,420,687
                                          ------       ------      -------      ---------
  Total Energy Sold..............     23,291,976   21,699,048    6,636,304     20,888,439
                                      ==========   ==========    =========     ========== 

Electric Sales (Thousands of Kwh):
  Residential....................      3,169,433    2,986,815      891,695      2,868,982
  Commercial.....................      3,051,258    2,990,488      989,580      2,886,807
  Industrial.....................      8,367,012    8,135,280    2,661,642      7,813,433
  Public Authorities.............        629,478      582,618      190,439        571,579
  Wholesale - Regulated .........      8,074,795    7,003,847    1,902,948      6,747,638 
                                       ---------    ---------    ---------      ---------
    Total Energy Sold............     23,291,976   21,699,048    6,636,304     20,888,439     
                                      ==========   ==========    =========     ==========

Number of Customers at End of Period:
  Residential....................        312,539      308,439      310,073        308,554
  Commercial.....................         58,535       57,298       57,502         57,204
  Industrial.....................         12,622       12,549       12,450         12,418
  Public Authorities.............            824          785          761            750
  Wholesale - Regulated .........            267          246          209            197
                                         -------      -------     --------        -------
      Total Customers ...........        384,787      379,317      380,995        379,123
                                         =======      =======     ========        =======

Electric Revenues (Thousands of Dollars):
  Residential....................       $194,535     $184,372     $ 54,109       $172,214
  Commercial.....................        168,731      166,572       54,033        154,653
  Industrial.....................        305,987      298,754       95,494        274,117
  Public Authorities.............         33,207       31,249       10,090         29,220
  Wholesale - Regulated..........        281,877      266,527       71,663        252,145
  Other Electric Revenues (1)....        (33,150)      12,881       10,190         17,048
                                        --------      -------     --------        -------
    Total Electric Revenues......       $951,187     $960,355     $295,579       $899,397
                                        ========     ========     ========       ========

Average Kwh Sales per 
  Residential Customer                     10,212       9,669        2,876          9,298
Average Revenue per
  Residential Customer                    $626.80     $596.85      $174.50        $558.13
Average Residential 
  Revenue per Kwh                         $0.0614     $0.0617      $0.0607        $0.0600
Average Commercial
 Revenue per Kwh                          $0.0553     $0.0557      $0.0546        $0.0536
Average Industrial
 Revenue per Kwh                          $0.0366     $0.0367      $0.0359        $0.0351
Average Wholesale -
  Regulated Revenue per Kwh               $0.0349     $0.0381      $0.0377        $0.0374
- -------------------------
</TABLE>

(1)Other electric  revenues is negative in 1998 primarily due to the recognition
   of lower deferred fuel revenues  resulting from cost reductions for fuel used
   in generation.


                                       21
<PAGE>


              Consolidated Gas Operating Statistics (NCE and PSCo)

<TABLE>
<CAPTION>
                                           Year Ended December 31,           
                                         NCE           NCE & PSCo        PSCo 
                                    1998    1997          1996        1998    1997 (3) 
                                  ------- -------        -------    -------  ---------
<S>                                <C>        <C>        <C>        <C>      <C>
Natural Gas Purchased and Sold
 (Thousands of Dth):
  Purchased for Utility 
    Operations                     141,887    151,687    147,298    137,402   150,163
  Purchased for Non-regulated
     Gas Marketing (1)              72,651     61,248     22,807          -    35,189      
                                   -------    -------    -------     ------   ------
      Total Purchased............   214,538   212,935    170,105    137,402   185,352
  Company Use....................     1,411     1,213        520      1,397     1,211
  Other (2)......................    14,038    17,236     10,000     11,608    15,461
                                    -------   -------    -------    -------  --------
    Total Gas Sold...............   199,089   194,486    159,585    124,397   168,680
                                    =======   =======    =======    =======  ========

Gas Deliveries (Thousands of Dth):
  Residential....................    84,710    87,386     86,102     82,239    86,634
  Commercial.....................    42,352    47,471     51,655     40,191    46,857
  Non-regulated Gas Marketing (1)    70,599    59,629     21,828          -    35,189           
                                     ------    ------     ------      -----    ------
      Total Gas Sold.............   197,661   194,486    159,585    122,430   168,680
  Transportation.................   107,423    93,271     90,304     90,746    86,831
  Other Gas Deliveries...........         -        73      1,141          -        73
                                    -------   -------    -------    -------  --------
    Total Deliveries.............   305,084   287,830    251,030    213,176   255,584
                                    =======   =======    =======    =======  ========

Number of Customers at End of
 Period:
  Residential....................   958,693   928,134    902,078    932,829   902,759
  Commercial.....................    93,549    91,937     90,761     90,858    89,229
  Non-regulated Gas Marketing (1)     2,043     2,190      1,255          -         -
                                      -----     -----      -----       ----      ----
    Total........................ 1,054,285 1,022,261    994,094  1,023,687   991,988
  Transportation and Other.......     2,738     2,215      1,794      2,731     2,205
                                    -------    -------   -------    -------  --------
    Total Customers.............. 1,057,023 1,024,476    995,888  1,026,418   994,193
                                  ========= =========    =======  =========   =======

Gas Revenues (Thousands of Dollars):
  Residential.................... $ 434,503 $ 410,406   $362,481  $ 423,875  $407,004
  Commercial.....................   182,506   186,248    176,328    175,291   184,192
  Non-regulated Gas Marketing (1)   180,641   172,524     64,389          -    99,273
  Transportation.................    34,990    32,646     28,549     34,472    32,465
  Other Gas Revenues.............     8,636    14,772      8,750      6,426    10,157
                                    -------   -------   --------    -------  --------
      Total Gas Revenues......... $ 841,276  $816,596   $640,497  $ 640,064  $733,091         
                                  =========  ========   ========  =========  ========

Average Annual Dth Sales per
 Residential Customer ...........     89.99     95.51      97.14      89.81     94.70
Average Annual Revenue per
 Residential Customer ...........   $461.60   $448.55    $408.93    $462.90   $444.91
Average  Revenue per Dekatherm:
  Residential ...................    $5.129    $4.696     $4.210     $5.154    $4.698
  Commercial ....................    $4.309    $3.923     $3.414     $4.361    $3.931
  Transportation ................    $0.326    $0.350     $0.316     $0.380    $0.374
- -------------------------
</TABLE>

(1) Includes purchases and sales by e prime and TOG.
(2)Primarily includes  distribution and transmission line losses and net changes
   to gas in storage.
(3)Information  through July 31, 1997 includes  information related to Cheyenne,
   WGI, Natural Fuels and e prime.  These  subsidiaries were transferred to NCE,
   effective August 31, 1997, in connection with the Merger.


                                       22
<PAGE>



Item 2.  Properties

PSCo Electric Generation Property

      The PSCo electric generating stations expected to be available at the time
of the anticipated 1999 net firm system peak demand during the summer season are
as follows:
<TABLE>
<CAPTION>
                                                      Net Dependable
                                                        Capacity
                                         Installed        (Mw)
                                           Gross    at Time of Anticipated    Major
            Name of Station              Capacity    1999 Net Firm System      Fuel
             and Location                   (Mw)       Peak Demand*          Source
             ------------                   ----       ------------          ------
<S>                                        <C>            <C>               <C>
Steam:
    Arapahoe - Denver..................      262.00         246.00            Coal
    Cameo - near Grand Junction .......       77.00          72.70            Coal
    Cherokee - Denver..................      779.00         717.00            Coal
    Comanche - near Pueblo.............      725.00         660.00            Coal
    Craig - near Craig.................       86.90 (a)      83.20            Coal
    Hayden - near Hayden...............      259.00 (b)     237.00            Coal
    Pawnee - near Brush................      530.00         511.00            Coal
    Valmont - near Boulder (Unit 5)....      188.00         178.00            Coal
    Zuni - Denver......................      115.00        107.00           Gas/Oil
                                            -------        ------
      Total............................    3,021.90       2,811.90

Fort St. Vrain Combustion Turbines 
 - near Platteville ...................      243.45         226.75            Gas
Combustion turbines (6 units-various
  locations) ..........................      209.00         171.00            Gas
Hydro (14 units-various locations) (c).       53.35          36.55 (d)        Hydro
Cabin Creek Pumped Storage-near
  Georgetown ..........................      324.00 (e)     162.00            Hydro
      Total............................    3,851.70       3,408.20
                                           ========       ========
- ----------------
</TABLE>

* A measure of the unit  capability  planned to be  available at the time of the
system peak load net of seasonal  reductions in unit  capability due to weather,
stream flow, fuel availability and station  housepower,  including  requirements
for air and water quality control equipment.

(a)The gross  maximum  capability  of Craig  Units No. 1 and No. 2 is 894 Mw, of
   which the Company has a 9.72% undivided ownership interest.

(b)The gross  maximum  capability  of Hayden  Units No. 1 and No. 2 is 202.01 Mw
   and  285.96  Mw,  respectively,  of which the  Company  has a 75.5% and 37.4%
   undivided ownership interest, respectively.

(c)Includes one station (two units) not owned by the Company but operated  under
   contract.

(d)Seasonal  Hydro  Plant net  dependable  capabilities  are based upon  average
   water conditions and limitations for each particular  season.  The individual
   plant seasonal  capabilities are sometimes  limited by less than design water
   flow.

(e) Capability at maximum load.

      Fort St. Vrain,  PSCo's only former  nuclear  generating  station,  ceased
operations   on  August  29,  1989,   and  on  March  22,  1996,   the  physical
decommissioning of the station was completed. The initial phase of the repowered
gas fired  combined  cycle steam electric  generating  station began  commercial
operations on May 1, 1996. Phase 2 is scheduled to begin operations in May 1999.
(see Note 10. Commitments and Contingencies in Item 8. FINANCIAL  STATEMENTS AND
SUPPLEMENTARY DATA).


                                       23
<PAGE>


SPS Electric Generation Property

      The SPS electric  generating stations expected to be available at the time
of the anticipated 1999 net firm system peak demand during the summer season are
as follows:

<TABLE>
<CAPTION>
                                                      Net Dependable
                                                        Capacity
                                         Installed        (Mw)
                                           Gross    at Time of Anticipated    Major
            Name of Station              Capacity    1999 Net Firm System      Fuel
             and Location                   (Mw)       Peak Demand*          Source
             ------------                   ----       ------------          ------

<S>                                        <C>            <C>             <C>
Steam:
    Harrington - near Amarillo, TX.....    1,137.00       1,066.00           Coal
    Tolk - near Muleshoe, TX ..........    1,130.00       1,080.00           Coal
    Jones - near Lubbock, TX...........      512.00         486.00            Gas
    Plant X - near Earth, TX...........      463.00         442.00            Gas
    Nichols - near Amarillo, TX........      479.00         457.00            Gas
    Cunningham - near Hobbs, NM........      281.00         267.00            Gas
    Maddox - near Hobbs, NM............      123.00         118.00            Gas
    CZ-2 - near Pampa, TX..............       26.00          26.00        Purch. steam
    Moore County - near Sunray, TX.....       51.00          48.00            Gas
                                            -------         ------
      Total............................    4,202.00       3,990.00

Gas Turbine:
    Carlsbad - near Carlsbad, NM.......       16.00          16.00            Gas
    CZ-1 - near Pampa, TX..............       13.00          13.00        Hot nitrogen
    Maddox - near Hobbs, NM............       76.00          76.00            Gas
    Riverview - near Borger, TX........       25.00          25.00            Gas
    Cunningham - near Hobbs, NM........      245.00         231.00            Gas

Diesel Engine (1 unit) - Tucumcari, NM.       15.00          15.00           Diesel
                                            -------        -------
      Total............................     4,592.00      4,366.00
                                            ========      ========

- ----------------
</TABLE>

* A measure of the unit  capability  planned to be  available at the time of the
system peak load net of seasonal  reductions in unit  capability due to weather,
stream flow, fuel availability and station  housepower,  including  requirements
for air and water quality control equipment.

Electric Transmission Property

      PSCo:  On December  31,  1998,  PSCo's  transmission  system  consisted of
approximately 112 circuit miles of 345 Kv overhead lines; 1,936 circuit miles of
230 Kv overhead lines; 15 circuit miles of 230 Kv underground  lines; 65 circuit
miles of 138 Kv overhead lines; 1,002 circuit miles of 115 Kv overhead lines; 22
circuit miles of 115 Kv underground  lines;  330 circuit miles of 69 Kv overhead
lines;  137 circuit miles of 44 Kv overhead  lines;  and 1 circuit mile of 44 Kv
underground  lines.  PSCo jointly owns with another  utility  approximately  342
circuit miles of 345 Kv overhead  lines and 359 miles of 230 Kv overhead  lines,
of which PSCo's share is 112 miles and 147 miles, respectively, which shares are
included in the amounts listed above.

      SPS:  On  December  31,  1998,  SPS's  transmission  system  consisted  of
approximately 319 circuit miles of 345 Kv overhead lines; 1,598 circuit miles of
230 Kv overhead  lines;  2,579  circuit  miles of 115 Kv overhead  lines;  1,768
circuit  miles of 69 Kv overhead  lines;  1 circuit  mile of 115 Kv  underground
line; and 5 circuit miles of 69 Kv underground lines.


                                       24
<PAGE>


Interconnections

      PSCo: PSCo's  transmission  facilities are located wholly within Colorado.
The system is  interconnected  with the systems of the following  utilities with
which PSCo has major firm  purchase  power  contracts;  capacity  and energy are
provided primarily by generating sources in the locations indicated:

      Utility                                          Location
      -------                                          --------

      Basin Electric Power Cooperative................ Southeast Wyoming
      PacifiCorp ..................................... West & Northwest U.S.
                                                       Northwest Colorado
      Platte River Power Authority.................... Northcentral Colorado
      Tri-State....................................... Southeast Wyoming and
                                                       Northwest Colorado

      PSCo has wheeling  agreements with the above, and with other utilities and
public  power  agencies,  which are  utilized to provide  capacity and energy to
PSCo's system from time to time.

      PSCo is a member  of the  WSCC,  an  interstate  network  of  transmission
facilities which are owned by public entities and investor-owned utilities. WSCC
is the regional reliability coordinating  organization for member electric power
systems  in the  western  United  States.  PSCo is also a member of the  Western
Systems  Power Pool which is an economic  power pool that operates an electronic
bulletin board and acts as a  clearinghouse  for bulk power  transactions  among
over 90 member utilities and marketers.

      SPS: SPS's  transmission  system is located in parts of Texas, New Mexico,
Oklahoma  and  Kansas.  SPS is  connected  with  utilities  west of its  service
territory  through  two  HVDC  interconnections  in  New  Mexico  and  has  four
interconnecting   transmission   lines  with   utilities   of  the  SPP.   These
interconnections are described in the following table:

      Utility                                           Location
      -------                                           --------

      El Paso Electric Company and Texas-New
           Mexico Power Company ........................Near Artesia, NM
      Public Service Company of New Mexico .............Near Clovis, NM
      Public Service Company of Oklahoma................Near Oklaunion, TX
                                                         and near Elk City, OK
      West Texas Utilities..............................Near Shamrock, TX
                                                         and near Groom, TX
      WestPlains Energy.................................Near Guymon, OK

      SPS is a member of the SPP.  Transactions with the SPP are handled through
interties near Elk City and Guymon,  OK, and Shamrock and  Oklaunion,  TX. These
interties  allow the  Company to sell or to  purchase  energy  from the  eastern
electrical grid. HVDC interconnections link SPS with the western electrical grid
of the United States. SPS purchases and sells energy through HVDC interties near
Artesia and Clovis, New Mexico.

      SPS is a  participant  in the FERC  approved  WSPP bulk power  market This
arrangement provides for short-term energy and capacity exchanges,  transmission
services,  flexible pricing,  and electronic bulletin board posting of available
power and energy.

     After further evaluation during 1998, PSCo and SPS recently announced plans
to interconnect  their systems and build additional  transmission  facilities to
alleviate  transmission  constraints,  increase  reliability  and provide energy
supply  alternatives in anticipation of competition.  This expansion is expected
to be  completed  in a phased  approach  and  will  require  various  regulatory
approvals.  This first  phase is 230 miles of 345 Kv line from  Amarillo,  TX to
Holcomb,  KS,  and is  expected  to be  completed  in 2001,  pending  regulatory
approvals.  The second  phase is 100 miles of 345 Kv line from Holcomb to Lamar,
CO and a high voltage direct current



                                       25
<PAGE>

conversion facility,  which would interconnect the PSCo and SPS systems, as well
as the  WSCC and SPP  regional  transmission  grids.  This  second  phase is now
scheduled  for   completion  in  2004.   While  not  directly   related  to  the
interconnection of the PSCo and SPS systems,  the third phase of this project is
approximately  275 miles of 345 Kv line from Amarillo to Oklahoma  City, OK. The
estimated completion of this line is not expected before 2006.

Electric Distribution Property

      The distribution system of the Company's electric subsidiaries consists of
both  overhead   lines  and   underground   distribution   systems.   PSCo  owns
approximately  210  substations  (30 of  which  are  jointly  owned)  having  an
aggregate  transformer  capacity of  19,390,000  Kva, of which  4,141,000 Kva is
step-up transformer capacity at generating stations.  SPS owns approximately 316
substations having an aggregate transformer capacity of 20,531,310 Kva, of which
5,951,000 Kva is step-up transformer capacity.

Gas Property

      The gas property of PSCo at December 31, 1998,  consisted of approximately
16,048 miles of  distribution  mains  ranging in size from 0.50 to 30 inches and
related equipment.  The Denver  distribution  system consisted of 9,093 miles of
mains.  Pressures  in the  system  are  varied  to meet  load  requirements  and
individual house regulators are installed on each customer's premises to provide
uniform flow of gas to appliances.  PSCo also owns and operates four gas storage
facilities.

Other Property

      PSCo's steam  heating  property at December  31,  1998,  consisted of 10.5
miles of  transmission,  distribution  and service lines in the central business
district of Denver, CO including a steam  transmission line connecting the steam
heating  system with Zuni.  Steam is supplied  from boilers  installed at PSCo's
Denver  Steam Plant which has a capability  of 295,000  pounds of steam per hour
under  sustained  load and an  additional  300,000  pounds  of steam per hour is
available from Zuni on a peak demand basis. An additional 80,000 pounds per hour
can be supplied as  emergency  backup  through  operation of a leased steam heat
boiler  housed at the State of  Colorado.  PSCo also  owns  service  and  office
facilities in Denver and other communities  strategically located throughout its
service territory.

      As of December 31, 1998,  PSCo has installed  8,500 tons of mechanical and
iced storage capacity.  Approximately 3,200 feet of piping has been installed to
provide central chilled water service to the Downtown Denver area.

Property of Subsidiaries

      Unregulated  subsidiary  property is  approximately  1% of the total net
book value of the  properties  of the  Company and  consolidated  subsidiaries
combined.  1480 Welton, Inc. owns two buildings that are used by PSCo.

Character of Ownership

      The steam  electric  generating  stations,  the majority of major electric
substations  owned by the Company and its subsidiaries are on land owned in fee.
Approximately  half of the  compressor  stations  and a  limited  number of town
border and meter  stations  are also on land owned in fee. The  remaining  major
electric  substations,  compressor  stations and the  majority of gas  regulator
stations  and town border and meter  stations  are wholly or  partially  on land
leased from others or on or along public highways or on streets or public places
within incorporated towns and cities (under franchises or other rights).  PSCo's
Cabin Creek  Pumped  Storage  Hydroelectric  Generating  Station,  its  Shoshone
Hydroelectric  Generating Station and a portion of the related intake tunnel are
located on public lands of the United States.  As to substantially  all property
on or across public lands of the United States,  the Company or its subsidiaries
hold licenses or permits issued by appropriate  Federal agencies or departments.
The Leyden gas storage  facility  is located  largely on leased  property  under
leases expiring December 31, 2040. The Company and its utility subsidiaries have
the power of eminent domain 


                                       26
<PAGE>

pursuant to State law to acquire property for their electric and gas facilities.
The electric and gas transmission  and distribution  facilities are for the most
part  located  on land  owned by the  Company or its  subsidiaries  pursuant  to
easements  obtained  from  the  record  holders  of  title  or are over or under
streets,  public  highways  or other  public  places and on public  lands  under
franchises or other rights. The water rights of the Company and its subsidiaries
are owned subject to divestment to the extent of any abandonment thereof.

      Substantially  all of the utility plant and other physical  property owned
by the Company's utility  subsidiaries is subject to the liens of the respective
indentures securing the mortgage bonds of the Company's utility subsidiaries.

Item 3.  Legal Proceedings

      See  Note  9.   Regulatory   Matters  and  Note  10.   Commitments   and
Contingencies in ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

Item 4.  Submission of Matters to a Vote of Security Holders

      NCE:  None.
      PSCo: Omitted pursuant to General Instruction I(2)(c).
      SPS:  Omitted pursuant to General Instruction I(2)(c).

                                   PART II

Item 5.  Market for Registrant's Common Equity and Related Stockholder Matters

      The Company's  common stock,  $1.00 par value per share,  is listed on the
New York  Stock  Exchange.  On August 1,  1997,  following  the  receipt  of all
required State and Federal regulatory  approvals,  PSCo and SPS combined to form
NCE with the  result  that the  common  shareholders  of PSCo and SPS became the
common  shareholders of NCE. Pursuant to the Merger Agreement,  each outstanding
share of PSCo  common  stock,  par  value  $5.00 per  share,  was  canceled  and
converted into one share of NCE common stock and each  outstanding  share of SPS
common stock, $1.00 par value per share, was canceled and converted into 0.95 of
one share of NCE common  stock.  Prior to the Merger,  PSCo and SPS common stock
was listed on the New York,  Chicago and Pacific Stock Exchanges.  The following
table sets forth for the periods  indicated the dividends  declared per share of
common  stock  and the high  and low  sale  prices  of the  common  stock on the
consolidated  tape as reported by The Wall Street  Journal for NCE, PSCo and SPS
in 1998 and 1997.

                                                 Dividends        Price Range
                  NCE                             Declared      High       Low
                  ---                             --------      ----       ---
1998
    First Quarter................................   $ 0.58  $51 3/16   $44 1/2
    Second Quarter...............................     0.58    50 3/4   44 5/16
    Third Quarter................................     0.58   49 3/16    41 5/8
    Fourth Quarter...............................     0.58    52 1/4    45 1/2
                                                   -------
                                                    $ 2.32

1997
    Third Quarter (from August 1, 1997).......... $   0.58  $43 3/16    $   39
    Fourth Quarter...............................     0.58    49 5/8    40 1/4
                                                  --------
                                                    $ 1.16


                                       27
<PAGE>


                                                 Dividends        Price Range
                 PSCo                             Declared      High       Low
                 ----                             --------      ----       ---
1997
    First Quarter................................   $0.525   $40 1/8   $38 1/4
    Second Quarter...............................    0.525    41 3/4    37 3/4
    Third Quarter (to August 1, 1997) (1)........    0.115   42 3/16    40 1/8
                                                   -------
                                                    $1.165
                  SPS
1997
    First Quarter................................   $ 0.55   $37 1/8   $35 3/4
    Second Quarter...............................     0.55    39 1/2    37 3/8
    Third Quarter (to August 1, 1997) (2)........     0.46    40 1/8    37 5/8
                                                   -------
                                                    $ 1.56

(1)A partial dividend payable to shareholders  covering the period July 12, 1997
   through July 31, 1997, the day prior to the Merger  effective date,  based on
   the quarterly  dividend rate of $0.525,  but pro-rated for the number of days
   in the interim period.
(2)A partial dividend  payable to shareholders  covering the period May 16, 1997
   through July 31, 1997, the day prior to the Merger  effective date,  based on
   the quarterly dividend rate of $0.55, but pro-rated for the number of days in
   the interim period.

      At December 31, 1998,  the book value of the  Company's  common equity was
$22.84 per share.  At March 24, 1999,  there were 73,000 holders of record of
the Company's common stock and the market price of the stock was $38 11/16.  The
Company sold 5.9 million  shares of common  stock in December  1997 and sold 2.5
million  shares in November  1998. See NOTE 4. CAPITAL STOCK for a discussion of
the shareholders' rights plan.

      The dividend level is dependent upon the Company's  results of operations,
financial position and other factors and is evaluated  quarterly by the Board of
Directors.  See  Item 7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  Of  FINANCIAL
CONDITION AND RESULTS OF OPERATIONS (NCE).


                                       28
<PAGE>


Item 6.  Selected Financial Data (NCE)

      The  following  selected  consolidated  financial  data  should be read in
conjunction  with the  consolidated  financial  statements and the  management's
discussion  and  analysis  of  financial  condition  and  results of  operations
appearing  elsewhere herein.  The NCE selected  financial data for 1996 has been
prepared from the  combination of the historical  information of PSCo and SPS as
of and for the year  ended  December  31,  1996.  The  1995  and  1994  selected
financial data has been prepared from the combination of PSCo  information as of
and for the years ended  December 31, 1995 and 1994 with the SPS  information as
of and for the years ending August 31, 1995 and 1994.

<TABLE>
<CAPTION>
                                                 Year ended December 31,      
                                      1998         1997         1996         1995         1994       
                                      ----         ----         ----         ----         ---- 
                                        (In thousands, except per share data & ratio)

<S>                               <C>          <C>          <C>          <C>          <C>
NCE                                   
Operating revenues:
   Electric..................     $ 2,697,486  $ 2,473,359  $ 2,416,539  $ 2,283,179  $ 2,243,284
   Gas.......................         841,276      816,596      640,497      624,585      624,922
   Other.....................          72,143       52,570       39,998       54,444       42,092
                                      -------      -------      -------       ------       ------
      Total..................       3,610,905    3,342,525    3,097,034    2,962,208    2,910,298
Total operating expenses.....       2,960,404    2,713,300    2,461,451    2,345,264    2,413,704
Operating income.............         650,501      629,225      635,583      616,944      496,594
Income before extraordinary
  item ......................         341,957      261,487      272,341      281,492      255,545
Extraordinary item - U.K. 
  windfall tax ..............               -     (110,565)           -            -            -
Net income...................         341,957      150,922      272,341      281,492      255,545
Per share data applicable to
  common stock (a):
  Basic earnings per share (c)          $3.06        $2.50        $2.64        $2.77        $2.54
  Diluted earnings per share (c)        $3.05        $2.50        $2.64        $2.77        $2.54
  Dividends declared (b)....            $2.32        $2.53        $2.18        $2.15        $2.13
Rate of return earned on 
 average common equity
  (income before extraordinary
   item to common) .........            13.8%        11.6%        12.8%        14.0%        13.3%
Total assets.................      $7,671,964   $7,321,666   $6,617,442   $6,260,794   $6,027,106
Total construction expenditures       608,972      475,497      454,968      380,407      409,485
Total common equity..........       2,614,827    2,357,387    2,170,040    2,064,397    1,963,654
Preferred stock of subsidiaries:
  Not subject to mandatory
   redemption ..............                -      140,002      140,008      212,688      212,688
  Subject to mandatory 
   redemption at par
   (including amounts due
    within one year) .......                -       41,829       42,489       43,865       45,241
PSCo and SPS obligated 
  mandatorily redeemable
  preferred securities......          294,000      100,000      100,000            -            -
Long-term debt of subsidiaries
   (including amounts due
    within one year) .......        2,343,710    2,245,424    2,050,189    1,854,737    1,703,808
Notes payable & commercial
 paper .....................          524,394      588,343      298,561      288,050      339,794

- -----------------
</TABLE>

(a)Earnings  per  share are based on the  weighted  average  number of shares of
   common stock outstanding.
(b)The 1997 amount  includes  dividends  declared by PSCo and SPS for the period
   January 1, 1997 through July 31, 1997 and  dividends  declared by NCE for the
   period  August 1, 1997  through  December  31,  1997.  See Item 5. Market for
   Registrant's Common Equity and Related Stockholder Matters.
(c)The 1997 amounts are before the $1.06  extraordinary  loss per share  related
   to the U.K. windfall tax.


                                       29
<PAGE>

<TABLE>
<CAPTION>

                                                 Year ended December 31,      
                                       1998(d)        1997 (e)       1996 (e)       1995 (e)     1994 (e)
                                       -------        --------       --------       --------     --------
PSCo                                  (In thousands, except per share data & ratio)

<S>                                 <C>            <C>            <C>            <C>            <C>
Operating revenues:
   Electric..................       $1,635,573     $1,485,196     $1,488,990     $1,449,096     $1,399,836
   Gas.......................          640,064        733,091        640,497        624,585        624,922
   Other.....................            8,449         11,356          7,951          7,010          7,517
                                       -------         ------          -----         ------         ------
      Total..................        2,284,086      2,229,643      2,137,438      2,080,691      2,032,275
Total operating expenses.....        1,952,068      1,892,290      1,812,902      1,784,784      1,786,592
Operating income.............          332,018        337,353        324,536        295,907        245,683
Income before extraordinary item       200,103        204,042        190,346        178,856        170,269
Extraordinary item - U.K.
  windfall tax                               -       (110,565)             -              -              -
Net income...................          200,103         93,477        190,346        178,856        170,269
Total assets.................        5,177,636      4,998,875      4,572,648      4,351,789      4,207,832
Total common equity..........        1,627,332      1,625,541      1,438,288      1,343,645      1,267,482
Preferred stock:
  Not subject to mandatory
  redemption ................                -        140,002        140,008        140,008        140,008
   Subject to mandatory
   redemption at par (including
   amounts due within one year)              -         41,829         42,489         43,865         45,241
PSCo obligated mandatorily
  redeemable preferred
  securities.................          194,000              -              -              -              -
Long-term debt
   (including amounts due
    within one year) ........        1,687,611      1,595,298      1,414,558      1,278,389      1,180,580
Notes payable & commercial paper       402,795        348,555        244,725        288,050        324,800

- -----------------
</TABLE>

(d)The 1998  information  includes NCI through  March 31, 1998, at which time it
   was sold to NC Enterprises.
(e)The 1994  through  1997  information  includes  Cheyenne,  WGI, e prime,  and
   Natural Fuels through July 31, 1997. These  subsidiaries  were transferred by
   dividend to NCE in connection with the Merger.

<TABLE>
<CAPTION>

                             Year ended December 31, Transition     Year Ended August 31,        
                                1998        1997     Period        1996       1995         1994      
                             ---------    --------   --------    --------   ---------     ------
SPS (f)                               (In thousands, except per share data & ratio)

<S>                          <C>         <C>         <C>         <C>        <C>         <C>
Operating revenues:
   Electric................  $ 951,187   $ 960,355   $ 295,579   $ 899,397  $ 834,083   $ 843,448
   Other...................          -      18,928      10,701      32,403     47,434      34,575
                               -------     -------      ------     -------    -------      ------
      Total................    951,187     979,283     306,280     931,800    881,517     878,023
Total operating expenses...    785,508     820,002     252,299     780,758    723,485     738,304
Operating income...........    165,679     159,281      53,981     151,042    158,032     139,719
Net income.................    114,987      75,575      19,137     105,773    119,477     102,168
Total assets...............  2,129,864   2,188,736   2,044,799   1,997,817  1,909,005   1,821,235
Total common equity........    738,220     698,390     731,752     735,119    720,752     696,172
Preferred stock, not subject
  to mandatory redemption...         -           -           -           -     72,680      72,680
SPS obligated mandatorily
 redeemable preferred 
 securities.................   100,000     100,000     100,000     100,000          -           -
Long-term debt
   (including amounts due
    within one year)........   620,731     620,771     635,631     638,107    582,552     523,228
Notes payable & commercial
  paper ....................    94,162     179,404      53,836      69,624          -      14,944

- -----------------
</TABLE>

(f)The 1994  through  1997  information  includes UE and Quixx  through July 31,
   1997.  These  subsidiaries  were  transferred  by sale to NC  Enterprises  in
   connection with the Merger.


                                       30
<PAGE>


Item 7.  Management's  Discussion  and  Analysis of  Financial  Condition  and
     Results of Operations (NCE,PSCo and SPS)

Competition and Industry Outlook

      The business and regulatory  environment in the utility  industry that has
existed  for  decades  is  continuing  to  change.  Competition  is  increasing,
particularly in energy supply and retail energy services.  Several states in the
U.S.  have  either  passed or  proposed  legislation  that  provides  for retail
electric  competition  and price  deregulation  of energy supply.  The wholesale
electric  energy  market has expanded and  geographic  boundaries  are no longer
barriers.  Increased  activity  by power  marketers  and  traders  has added new
dimensions of complexity and risk. A significant  amount of electric  generation
assets  have been  purchased,  sold or traded in the U.S.  during  1998 and this
trend is expected to continue.  Consolidation  and globalization is a continuing
trend as businesses  position  themselves for competition in an unbundled energy
industry. The Company continues to look for opportunities to expand its customer
base as an energy  service  provider and on an ongoing basis  evaluates  merger,
acquisition and divestiture opportunities.

      Electric prices in the Company's service territories are low in comparison
to other parts of the U.S. State  legislatures and state utility  commissions in
the  retail  jurisdictions  served by the  Company's  utility  subsidiaries  are
focusing on the restructuring and deregulation of the electric utility industry,
however, no significant  progress was achieved during 1998. The Company supports
a fair and orderly transition to a competitive environment and believes that any
restructuring  plans should  provide the Company with an  opportunity to recover
its costs for prudently incurred utility investments and contractual commitments
that may be uneconomic  in the future.  Overall,  the Company  believes that the
prices its  utility  subsidiaries  charge for  electricity  and the  quality and
reliability  of their  service  currently  place them in a  position  to compete
effectively in the energy market.  The potential  negative  financial impacts of
deregulation,  however,  could include an impairment of assets, a loss of retail
customers,  lower  profit  margins and  increased  costs of capital (see Note 1.
Summary of Significant  Accounting Policies in Item 8. FINANCIAL  STATEMENTS AND
SUPPLEMENTARY  DATA).  At this time,  the Company  and its utility  subsidiaries
cannot  predict  when  they  will  be  subject  to  changes  in  legislation  or
regulation,  nor can they predict the impacts of such changes on their financial
position, results of operations or cash flows.

Corporate Overview - 1998

      The Company  completed its first full year of operations  since the merger
of PSCo and SPS which was  effective  August 1, 1997.  The primary focus in 1998
has been on providing customers with reliable energy service,  controlling costs
to  maintain  low  prices  for  customers  and to earn an  adequate  return  for
shareholders.  Customers benefited from electric rate reductions  resulting from
shared  savings under a performance  based  regulatory  plan in Colorado and the
pass  through  of lower fuel costs in  several  jurisdictions.  Strong  customer
growth in its service  territories and aggressive cost control efforts  continue
to help keep gas and  electric  rates  among  the  lowest  in the  industry.  In
connection  with various  state  regulatory  and  legislative  initiatives,  the
Company is evaluating  its  potentially  stranded  costs.  The issues related to
determining  stranded  costs are very  complex  and  dependent  upon the  future
changes in legislation or regulation. However, at this time the Company believes
that its risks  related  to this  matter are  relatively  low.  Risk  management
initiatives  were further  implemented  this year to better manage  exposures to
changes in market  risks and to better  position  the  Company  for the  future.
Additionally,  Yorkshire Power provided a solid contribution to earnings for the
year demonstrating the value of some strategic international diversification.

      The Company has organized  into business units as part of its strategy for
future  growth.  These  business  units,  consisting of Energy  Supply,  Retail,
Delivery and International have made significant progress in developing business
plans focused on the corporate  priorities  to profitably  grow the Company.  In
1999,  the Company will  continue to further  develop and implement the business
unit infrastructure,  including business systems and regulatory strategies.  The
deployment  of  this  strategy  will  be  an  important  step  toward   creating
shareholder value and preparing the Company for the year 2000 and beyond.

                                       31
<PAGE>

Earnings

      Basic  earnings  per share were  $3.06  (diluted  earnings  per share were
$3.05),  $1.44 ($2.50 before the extraordinary item) and $2.64 during 1998, 1997
and 1996,  respectively.  The increase in 1998 earnings was primarily attributed
to  increased  electricity  sales  during the hot summer  months with  continued
strong customer growth in Colorado.  Improved  earnings from NCE's investment in
Yorkshire Power,  also contributed  positively to the higher 1998 earnings.  The
significant  decrease  in 1997  earnings,  as compared  to 1996,  was  primarily
attributable to the recognition of an extraordinary item related to the one-time
U.K. windfall tax of approximately $110.6 million, or $1.06 per share,  however,
ongoing  operations of Yorkshire  Power  positively  impacted the Company's 1997
earnings.  Earnings  during  1997  and  1996  were  negatively  impacted  by the
write-offs of certain  investments in waste-to-energy  cogeneration  facilities,
higher merger and business  integration costs resulting from the August 1, 1997,
closing of the Merger and electric rate decreases instituted in 1997 and 1996.

Electric Operations

      The  following  table  details  the annual  change in  electric  operating
revenues and energy costs as compared to the preceding year (in thousands).
                                                    Increase (Decrease)
                                                      From Prior Year
                                                    1998          1997  
                                                  --------      --------
Electric operating revenues:
 Retail......................................      $ 62,565      $ 20,350
 Wholesale...................................       120,343        35,773
 Non-regulated power marketing...............        51,656        15,055
 Other (including unbilled revenues).........       (10,437)      (14,358)
                                                   --------      --------
  Total revenues.............................       224,127        56,820
Fuel used in generation......................       (27,494)       36,525
Purchased power..............................       181,400        20,905
                                                   --------      --------
  Net increase (decrease) in electric margin       $ 70,221      $   (610)   
                                                   ========      ========

      The  following  table  summarizes  electric  Kwh  sales by major  customer
classes.
                                                                  % Change *
                                          Millions of Kwh Sales  From Prior Year
                                                 1998     1997    1998   1997
                                                 ----     ----    ----   ----
Residential ...............................     10,136    9,730    4.2%   2.1%
Commercial and Industrial  ................     27,666   27,014    2.4    1.7
Public Authority ..........................        841      774    8.7   (0.8)
                                                ------    -----
  Total Retail.............................     38,643   37,518    3.0    1.8
Wholesale..................................     15,948   11,495   38.7   13.5
Non-regulated Power Marketing..............      2,917    1,210   **     **
                                                ------    -----
Total......................................     57,508   50,223   14.5    5.9
                                                ======   ======

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

      Electric  margin  increased  during  1998,  when  compared  to  1997,  due
primarily to a 3.0% increase in total retail sales and a 14.5% increase in total
sales  resulting  from  customer  growth of 2.2% and hotter than normal  weather
during the second and third  quarters of 1998.  In addition,  PSCo's  margin was
positively  impacted by lower  accruals of  approximately  $9.6  million for the
estimated customer refund obligation  associated with the sharing of earnings in
excess of 11% return on equity in Colorado  (see Note 9.  Regulatory  Matters in
Item 8.  FINANCIAL  STATEMENTS AND  SUPPLEMENTARY  DATA).  Higher  wholesale and
non-regulated  power  marketing  sales,   reflecting  marketing  activities  for
economy,   short-term  firm  and  off-system  sales,  contributed  to  increased
operating revenues,  however, the margin on such sales was minimal. SPS's margin
was also  positively  impacted by $16.9 million in revenue  recognized  with the
settlement of a 1985 FERC rate case.

                                       32
<PAGE>

      Electric  margin  decreased  slightly  during 1997 when  compared to 1996.
PSCo's retail rate  reductions  (approximately  $15.4  million)  implemented  in
October  1996 and  February  1997 and the  recognition  at PSCo of an  estimated
customer refund obligation  (approximately $16.4 million) in connection with the
earnings  sharing  in excess of 11%  return on equity  which  resulted  from the
settlement of the Merger proceedings in Colorado (see Note 9. Regulatory Matters
in  Item  8.  FINANCIAL   STATEMENTS  AND   SUPPLEMENTARY   DATA)  were  primary
contributors to the decrease.  Electric  margin was also negatively  impacted by
the recognition at SPS of an estimated customer refund obligation (approximately
$1.8 million) related to the guaranteed  merger savings as well as interruptible
rates available to certain classes of retail and wholesale customers. An overall
1.8%  increase in electric Kwh sales to retail  customers,  resulting  primarily
from  customer  growth of 1.3%  minimized  the impact of these rate  reductions.
Higher wholesale electric sales and power marketing  activities by non-regulated
subsidiaries  also contributed to increased  operating  revenues,  however,  the
margin on such sales is minimal

      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.  As a
result,  the changes in revenues  associated  with these  mechanisms in 1998 and
1997,  when compared to the respective  preceding year, had little impact on net
income. In its decision on the Merger, the CPUC replaced PSCo's ECA with an ICA,
effective  October 1, 1996,  which allows for a 50%/50%  sharing of certain fuel
and energy cost increases and decreases  among customers and  shareholders.  For
1998 and 1997, the ICA did not significantly impact electric margin (see Note 9.
Regulatory Matters in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

      Fuel used in generation expense decreased  approximately 4.1% during 1998,
as  compared to 1997,  primarily  due to lower per unit cost of coal and natural
gas offset,  in part, by increased  generation levels at PSCo and SPS. Fuel used
in generation  expense increased  approximately 5.8% during 1997, as compared to
1996,  primarily due to increased  generation levels at PSCo and SPS, and higher
natural gas costs at SPS.

      Purchased  power  expense  increased  34.1% and 4.1% during 1998 and 1997,
respectively,  as compared to the previous year.  These  increases are primarily
due to the  amount of power  purchased  by PSCo and a  non-regulated  subsidiary
related  to  growth  in  wholesale  marketing  activities  of  gas  trading  and
non-trading operations.

Gas Operations

      The  following  table  details the annual  change in gas  revenues and gas
purchased for resale as compared to the preceding year (in thousands).

                                                    Increase (Decrease)
                                                      From Prior Year
                                                    1998          1997  
                                                  --------      --------
Revenues from gas sales (including 
  unbilled revenues) .......................      $ 22,500      $172,340
Gas purchased for resale....................        19,292       150,128
                                                  --------      --------
 Net increase in gas sales margin...........         3,208        22,212
Transportation revenues.....................         2,180         3,759
                                                  --------      --------
  Increase in net gas margin................      $  5,388      $ 25,971
                                                  ========      ========


                                       33
<PAGE>


      The  following  table  compares gas  dekatherm  (Dth)  deliveries by major
customer classes.

                                              Millions of         % Change *
                                            Dth Deliveries       From Prior Year
                                             1998      1997        1998   1997 
                                             ----      ----        ----   ---- 
Residential............................       84.7     87.4      (3.1)%   1.5%
Commercial.............................       42.4     47.5     (10.8)   (8.1)
Non-regulated gas marketing............       70.6     59.6      18.4    **
                                            ------   ------
  Total Sales..........................      197.7    194.5       1.6    21.9
Transportation, gathering and processing     107.4     93.3      15.2     2.1 
                                             -----     ----
  Total................................      305.1    287.8       6.0    14.7
                                            ======   ======

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

      Gas sales  margin  increased  slightly  in 1998,  when  compared  to 1997,
primarily  due to an  increase in PSCo's base  revenues  associated  with a rate
increase  effective February 1, 1997, offset in part, by lower PSCo retail sales
which resulted from warmer  weather.  Gas sales margin  increased in 1997,  when
compared  to  1996,  primarily  due  to an  increase  in  PSCo's  base  revenues
associated with the higher rates, effective February 1, 1997, and an increase in
gas marketing activities by non-regulated subsidiaries.  Per-unit gas costs were
lower in 1998 than  1997,  however,  the total cost of gas  increased  due to an
increase in the  quantity  purchased.  Gas costs were  higher  during  1997,  as
compared to 1996, as a result of higher per-unit gas prices throughout 1997.

      Gas transportation  revenues increased during 1998 and 1997, when compared
to the respective preceding years,  primarily due to increases in deliveries and
higher transportation  rates,  effective February 1, 1997, resulting from PSCo's
1996 rate case. In addition,  the shifting of various PSCo commercial  customers
to firm transportation  customers,  some of which became retail customers of the
Company's non-regulated subsidiaries,  contributed to the increases in both 1998
and 1997.

      PSCo and  Cheyenne  have in place GCA  mechanisms  for  natural gas sales,
which  recognize  the  majority  of the  effects  of  changes in the cost of gas
purchased  for resale and adjust  revenues to reflect such changes in costs on a
timely  basis.  As a result,  the  changes  in  revenues  associated  with these
mechanisms  during 1998 and 1997 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

      Other operating revenues increased  approximately  $19.6 million and $12.6
million  during 1998 and 1997,  respectively,  as compared the  preceding  year,
primarily due to higher  revenues from  diversified  energy related  businesses,
primarily engineering, design and construction management, energy management and
consulting services.

Non-Fuel Operating Expenses and Other Income and Deductions

      Other operating and maintenance expenses increased $43.4 and $25.8 million
during  1998 and  1997,  respectively,  as  compared  to the same  period in the
preceding year. The increase in 1998 was primarily due to higher operating costs
from  non-regulated  operations  (approximately  $34  million).  The increase in
non-regulated  operating and  maintenance  expenses is due to the acquisition of
subsidiaries  and growth of existing  businesses.  The increase in operating and
maintenance  costs  in the  Company's  regulated  operations  (approximately  $9
million)  was  primarily  due to higher  labor  costs from wage rate  increases,
increased  contract labor costs,  higher data processing  costs,  including Year
2000 related costs and additional  transmission  wheeling costs. Other operating
and  maintenance  expenses  increased  during 1997 due to the recognition of the
Thunder Basin judgement  (approximately $12 million). The Thunder Basin judgment
did not  impact  earnings  as the costs  were  included  in

                                       34
<PAGE>

the calculation of deferred revenue.  The Company expects to recover these costs
through  SPS's  fixed  fuel  factor  (see Note 9.  Regulatory  Matters in Item 8
FINANCIAL  STATEMENTS AND  SUPPLEMENTARY  DATA).  Also  contributing to the 1997
increase was the favorable  impact on 1996 earnings of the settlement  agreement
with the DOE  resolving  all spent  nuclear fuel storage and disposal  issues at
Fort St. Vrain (approximately $16 million).

      Depreciation and amortization  expense increased $25.7 million in 1998 and
$18.2  million  in 1997  primarily  due to  higher  depreciation  expenses  from
property  additions.  The  increase  in  1998  also  includes  $7.6  million  of
additional  depreciation in connection with a settlement  related to an SPS 1985
wholesale rate case.

      Other  income  and  deductions  increased  $59.0  million in 1998 and $7.3
million in 1997 when  compared to the preceding  year.  The increase in 1998 was
primarily  attributable  to the absence of Merger  expenses and the write-off of
investments  in  cogeneration  projects  and lower legal costs  associated  with
various employee  lawsuits.  The increase in 1997 was primarily due to equity in
earnings of Yorkshire  Power ($34.9  million)  offset,  in part, by increases in
Merger  expenses  in 1997  and the  recognition  of a gain on the  sale of water
rights by Quixx in 1996.

      Interest  charges and preferred  dividends of subsidiaries  decreased $1.8
million in 1998. Proceeds from the issuance of $250 million in long-term debt in
April 1998 were used,  in part,  to reduce short  term-debt.  Proceeds  from the
November 1998  issuance of $117 million in common stock were used,  primarily to
reduce short-term debt and other borrowings.  Higher average levels of debt were
offset by lower average interest rates.  Additionally,  in May 1998, PSCo issued
$194 million of Trust Originated  Preferred Securities  ("TOPRS").  The proceeds
were used to redeem all of PSCo's  outstanding  preferred stock (totaling $181.8
million) on June 10, 1998.  A redemption  premium  totaling  approximately  $2.1
million  was  incurred  as part  of this  refinancing,  however,  the  after-tax
financing  costs  associated  with the TOPRS will be lower  over the  long-term.
Additionally,   higher  AFDC  was  recorded  in  1998  as  a  result  of  higher
construction expenditures.  In 1997, interest charges and preferred dividends of
subsidiaries  increased  $31.5  million  primarily due to interest on borrowings
used to finance capital  expenditures and the April 1997 investment in Yorkshire
Power.  These  financings  included PSCo's issuance of medium-term  notes and an
increased  level  of  short-term   borrowings  by  NCE  and  its   subsidiaries.
Additionally,  dividends  on  SPS  obligated  mandatorily  redeemable  preferred
securities  of  subsidiary  trust  increased due to the October 1996 issuance of
$100 million of these preferred securities.

Risk Management

      NCE and its  subsidiaries  are exposed to market  risks in both the energy
trading and non-trading  operations.  The objective of NCE's trading operations,
which were primarily  initiated in 1998, is to generate profits while minimizing
the related exposure to changes in commodity  prices.  These operations  include
the gas and power marketing and trading  activities at e prime and the wholesale
power trading  activities  at PSCo and SPS. The  objective of NCE's  non-trading
activities is to protect the Company's  profitability.  These operations include
the retail gas business at e prime,  the gas  distribution  and electricity load
management  activities  at PSCo in  addition  to the  normal  operations  of the
Company.  The market risks mentioned above include changes in commodity  prices,
interest rates, and currency  exchange rates. Due to cost-based rate regulation,
NCE's  regulated  subsidiaries  have  limited  exposure to  commodity  price and
interest rate risk.

      The Company  manages  these  market  risks  through  various  policies and
procedures  that  allow for the use of  various  instruments  in the  energy and
financial  markets.  Risk  management  activities are monitored by the Company's
Risk Management Compliance Committee,  whose responsibilities  include reviewing
NCE and its subsidiaries'  overall risk management  strategy and monitoring risk
management  activities to ensure  compliance with risk  management  limitations,
policies and procedures.

Commodity Price Risk

      NCE  continued  to  develop  and expand  its gas and power  marketing  and
trading  activities during 1998 and management expects to continue the growth of
these activities during 1999. As a result,  the Company's exposure to changes in
commodity  prices may increase and NCE may experience  earnings  volatility.  To
manage

                                       35
<PAGE>

exposure  to price  volatility  in the natural gas and  electricity  markets,  a
variety of energy contracts,  both financial and commodity based are utilized as
hedges.  These contracts consist mainly of commodity futures and options,  index
or fixed  price  swaps and  basis  swaps  and are used by both the  trading  and
non-trading operations.

      NCE measures its open exposure to commodity  price changes  separately for
the trading and non-trading operations using a Value-at-Risk ("VaR") methodology
to quantify the estimates of the magnitude and  probability of potential  future
losses related to open contractual  positions.  VaR expresses the potential loss
in  fair  value  of all  open  forward  contract  and  option  positions  over a
particular period of time, with a specified likelihood of occurrence.  The model
employs a 95 percent  confidence  level based on historical price movement for a
holding  period of 30 days. As of December 31, 1998,  the  calculated VaR was as
follows (in thousands):

                                                        NCE        PSCo
                                                        ---        ----
    Natural gas marketing & trading activities .....   $   29     $    -
    Power marketing & trading activities ...........      307        291
    Natural gas non-trading activities..............      312          -
    Power non-trading activities....................    1,159      1,159

      On a thirty-day  holding  period as of December 31, 1998,  the VaR for NCE
does not exceed $1.3 million.

Interest Rate Risk

      NCE  and  its  subsidiaries   have  both  long-term  and  short-term  debt
instruments that subject the Company and certain of its subsidiaries to the risk
of loss associated with movements in market interest rates. This risk is limited
for NCE's  regulated  companies  primarily  due to cost based  rate  regulation.
Except for one interest rate swap agreement  entered into by SPS, the Company is
not currently utilizing financial instruments to manage its exposure to interest
rate fluctuations.  In the future,  management  anticipates  utilizing financial
instruments  to  manage  its  exposure  to  changes  in  interest  rates.  These
instruments may include interest rate swaps, caps,  collars and  exchange-traded
futures contracts and put or call options on U.S.
Treasury securities.

      As of  December  31 1998,  a 100 basis  point  change in each  outstanding
debt's instrument benchmark rate would impact net income of NCE, PSCo and SPS by
approximately  $5.8  million,  $2.9 million and $2.1 million,  respectively.  If
interest  rates were to decline by 10% from their  levels at December  31, 1998,
the  corresponding  increase  in  fair  value  of $69  million  at NCE  and  its
subsidiaries,  $53 million at PSCo and its  subsidiaries  and $15 million at SPS
would impact  earnings  and cash flows only if the Company and its  subsidiaries
were to reacquire all or a portion of these instruments in the open market prior
to their maturity.

Currency Exchange Risk

      NCE's investment in Yorkshire Power, a foreign currency  denominated joint
venture, also exposes the Company to currency translation rate risk. At December
31,  1998 and 1997,  the  Company's  exposure  to changes  in  foreign  currency
exchange rates is not material to its consolidated  financial position,  results
of operations or cash flows.  The Company does not presently  utilize  financial
instruments to manage its exposures to foreign currency exchange rate movements.

Credit Risk

      In addition to the risks discussed  above,  NCE and its  subsidiaries  are
exposed to credit risk in its risk management activities. Credit risk relates to
the risk of loss resulting  from the  nonperformance  of a  counterparty  of its
contractual  obligations.  As the Company  continues to expand its gas and power
marketing  and trading  activities,  the  Company's  exposure to credit risk and
counterparty  default may increase.  NCE and its  subsidiaries  maintain  credit
policies intended to minimize overall credit risk.

                                       36
<PAGE>

      NCE and its  subsidiaries  conduct  standard credit reviews for all of its
counterparties.  The Company employs  additional credit risk control  mechanisms
when  appropriate,   such  as  letters  of  credit,   parental   guarantees  and
standardized master netting agreements that allow for offsetting of positive and
negative  exposures.  The credit exposure is monitored and, when necessary,  the
activity with a specific  counterparty  is limited until credit  enhancement  is
provided.

Commitments and Contingencies

      Issues relating to regulatory and  environmental  matters are discussed in
Notes 9 and 10 in Item 8. FINANCIAL  STATEMENTS AND  SUPPLEMENTARY  DATA.  These
matters  and the future  resolution  thereof  may impact  the  Company's  future
results of operations, financial position or cash flows.

Year 2000 Issue

      The  Year  2000  ("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 addressing  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  phase and  assessment  phase for
information  technology  ("IT")  systems were  completed in 1998.  Additionally,
approximately  77% of the  remediation  and  testing  phase for all  critical IT
systems was completed in 1998 with the remaining remediation and testing planned
to be completed by June 30, 1999. For non-IT  systems,  which exist primarily in
the  generation,  transmission  and  distribution  areas  of the  business,  the
inventory and assessment phases are complete. Remediation and testing for non-IT
systems were approximately 46% complete at December 31, 1998, with the remainder
expected  to be  completed  by  September  30,  1999.  Systems  critical  to the
generation and delivery of energy are expected to be completed by June 30, 1999.

      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 $25 million
to modify its computer  software,  hardware and other automated  systems used in
operations enabling proper data processing relating to the year 2000 and beyond.
This includes approximately $19 million for inventory,  assessment,  remediation
and testing and approximately $6 million for the replacement of automated system
components.  Furthermore, the Company expects to spend approximately $15 million
for the accelerated  replacement of certain non-compliant IT systems,  which are
expected to be  implemented by September 30, 1999. The majority of all Y2K costs
will be incurred by PSCo and SPS. A significant portion of the costs incurred to
address the Company's Y2K issues will  represent  the  redeployment  of existing
information  technology  resources.  The table below  details  the actual  costs
incurred  through  December 31,  1998,  and the  estimated  costs to be incurred
during 1999 (in millions).


                                       37
<PAGE>



                                             Actual Costs   Estimated  Estimated
                                             1998 and Prior   1999      Total
                                             --------------   ----      -----

      Operating expenses.......................    $ 8.2      $11.1     $19.3
      Capital expenditures ....................      7.1       13.4      20.5

      Yorkshire Power has also undertaken  activities to address Y2K issues. The
estimated  proportionate share of Yorkshire Power'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.

      If correction or replacement of non-compliant systems are not completed on
a timely basis,  the Y2K issues may have a material  impact on the operations of
the Company and its subsidiaries. Management, however, does not anticipate these
activities  will  have a  material  adverse  impact on the  financial  position,
results of operations or cash flows of the Company or its subsidiaries.

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,  the  Company'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 was filed with the IRS National  Office on January
15, 1999, with respect to the proposed adjustment.

      Management plans to vigorously  contest this issue.  PSCo has not recorded
any  provision  for  income tax or  interest  expense  related  to this  matter.
Management believes that the Company'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.

Common Stock Dividend

      During 1998, the Company  declared common stock  dividends  totaling $2.32
per share.  The  Company's  common stock  dividend  level is dependent  upon the
Company's  results  of  operations,  financial  position,  cash  flows and other
factors.  The Board of Directors  of the Company  will  continue to evaluate the
common stock dividend on a quarterly basis.


                                       38
<PAGE>


Liquidity and Capital Resources

Cash Flows
                                                  1998       1997     1996     
                                                  ----       ----     ----
Net cash provided by operating
  activities (in millions) ................      $659.5    $344.4    $481.2

      Cash  provided by  operations  increased in 1998,  when  compared to 1997,
primarily  due to higher  earnings  from  utility  operations  and a decrease in
payments  to  gas  suppliers   resulting  from  lower  gas  costs  during  1998.
Additionally,  SPS and a non-regulated  subsidiary of NCE recorded combined cash
proceeds of  approximately  $67 million for the  recovery of deferred  costs and
income from the investment in a non-regulated  energy development project during
1998. Cash provided by operating  activities decreased in 1997, when compared to
1996,  primarily  due to the SPS payment of the Thunder  Basin  judgment  and an
increase  in payments to gas  suppliers  resulting  from the higher gas costs in
late 1996 and early 1997.  A portion of these  lower gas costs  incurred in 1998
and higher gas costs incurred in 1997 have been deferred  through PSCo's GCA and
will be paid to or recovered from customers in the future.

                                                  1998       1997     1996     
                                                  ----       ----     ----
Net cash used in investing
  activities (in millions) ................     $614.0     $856.4    $443.2

      Cash used in investing  activities decreased during 1998, when compared to
1997,  primarily  due to the  investment in Yorkshire  Power in 1997,  partially
offset by higher 1998 construction expenditures and the acquisition of Planergy.
Cash used in investing  activities increased during 1997, when compared to 1996,
primarily due to the equity investment in Yorkshire Power for approximately $360
million  and the 1996  sale by  Quixx  of  certain  water  rights.  Construction
expenditures also increased in 1997 when compared to the preceding year.

                                                  1998       1997     1996     
                                                  ----       ----     ----
Net cash (used in) provided by
  financing activities (in millions) ......     $(61.5)    $534.6    $(16.3)

      Cash provided by financing activities decreased during 1998, when compared
to 1997,  primarily due to PSCo's  issuance of debt in early 1997 to finance the
investment in Yorkshire Power. In November 1998, the Company issued $117 million
in common  stock and in April  1998,  PSCo's  issued $250  million of  long-term
bonds.  Proceeds  from  the  1998  financings  were  primarily  used  to  reduce
short-term  debt and other  corporate  purposes.  In May 1998,  PSCo issued $194
million of Trust  Originated  Preferred  Securities.  The proceeds  were used to
redeem all of PSCo's  outstanding  preferred stock (totaling  $181.8 million) on
June 10, 1998. Cash provided by financing activities increased during 1997, when
compared to 1996,  primarily  due to NCE's  issuance of common stock in December
1997 and PSCo's issuance of medium-term notes. The proceeds from the $75 million
financing  by PSCo in January 1997 were used to fund its  construction  program.
The  proceeds  from the issuance of $250  million  medium-term  notes by PSCo in
March 1997, together with additional borrowings of approximately $110 million on
its  short-term  lines of credit,  were used to fund the investment in Yorkshire
Power.  An increase in recoverable  purchased gas and electric  energy costs and
reduced cash flows resulting from lower electric  rates,  coupled with increased
merger and business integration costs,  required PSCo to temporarily utilize the
additional short-term borrowings to finance ongoing construction expenditures.


                                       39
<PAGE>


Prospective Capital Requirements

      The estimated cost as of December 31, 1998 of the construction programs of
the Company and its  subsidiaries  and other capital  requirements for the years
1999, 2000 and 2001 are shown in the table below (in millions):

                                             1999        2000      2001 
                                           -------      ------    ------
Electric
    Production *........................   $   163      $  134    $   79
    Transmission........................        44         107        92
    Distribution........................       188         170       181
Gas ....................................        82          82        85
General and non-utility subsidiaries....       155         117       128
                                           -------      ------    ------
      Total construction expenditures...       632         610       565
Less: Allowance for funds used during
      construction                              20          17        18
Add: Sinking funds and debt maturities..       192          35       143
                                           -------      ------    ------
Total capital requirements..............   $   804      $  628    $  690
                                           =======      ======    ======

*  Capital  requirements for 1999 Electric Production include  approximately $72
   million for emission control equipment and environmental projects.

      The  construction  programs of the Company's  subsidiaries  are subject to
continuing  review  and  modification.   In  particular,   actual   construction
expenditures  may vary from the estimates due to changes in the electric  system
projected  load  growth,  the desired  reserve  margin and the  availability  of
purchased  power,  as  well as  alternative  plans  for  meeting  the  Company's
long-term energy needs. In addition, the Company's ongoing evaluation of merger,
acquisition and divestiture  opportunities to support  corporate  strategies and
future  requirements  to install  emission  control  equipment may impact actual
capital requirements (see Note 10. Commitments and Contingencies - Environmental
Issues in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

Capital Sources

      At December 31, 1998, the Company and its subsidiaries estimate that their
1999-2001  capital  requirements  will be met with a  combination  of funds from
external sources and funds from operations. The Company and its subsidiaries may
meet their  external  capital  requirements  through the sale of common stock by
NCE, the issuance by NCE and its subsidiaries of secured and unsecured long-term
and short-term  debt and the sale of other  securities.  The financing needs are
subject to  continuing  review and can change  depending  on market and business
conditions and changes,  if any, in the construction  programs and other capital
requirements of the Company and its subsidiaries.

Registration Statements

      The Company has an effective  registration statement covering the issuance
of 10 million  shares of common stock to be issued under the Company's  Dividend
Reinvestment and Cash Payment Plan ("Dividend  Reinvestment Plan"). Any proceeds
received  by the  Company  will be used for  general  corporate  purposes.  This
program  allows  for  either the  purchase  of shares on the open  market or the
issuance of new shares.  The  Dividend  Reinvestment  Plan allows the  Company's
shareholders to purchase additional shares of the Company's common stock through
the  reinvestment  of cash  dividends and the purchase of  additional  shares of
common stock with optional cash payments. As of December 31, 1998, approximately
8.8 million shares were available for issuance.

Subsidiary Registration Statement

      SPS has an effective shelf registration statement under which $220 million
of debt securities and/or preferred stock are available for issuance,  a portion
of which is still subject to state utility commission approval.

                                       40
<PAGE>

Short-Term Borrowing Arrangements

      NCE has a $225 million  credit  facility  with several banks that provides
for $200 million of direct borrowings by NCE and $25 million by Cheyenne.

      PSCo and its subsidiaries have available committed lines of credit to meet
their  short-term cash  requirements.  PSCo and its  subsidiaries  have a credit
facility with several banks which  provides $300 million in committed bank lines
of credit and is used  primarily to support the issuance of commercial  paper by
PSCo and PSCCC, and to provide for direct borrowings thereunder. At December 31,
1998, this facility was fully drawn.  Generally,  the banks participating in the
credit facility would have no obligation to continue their  commitments if there
has been a material  adverse  change in the  consolidated  financial  condition,
operations,  business or otherwise that would prevent PSCo and its  subsidiaries
from  performing  their  obligation  under the credit  facility.  This  facility
expires on November  17,  2000.  PSCo also has  available a $150 million line of
credit which expires on June 25, 1999. At December 31, 1998, approximately $47.2
million of this facility remained unused.

      PSCCC may periodically issue medium-term notes to supplement the financing
or purchase of PSCo's customer accounts  receivable and fossil fuel inventories.
As of December 31, 1998,  PSCCC had issued and had  outstanding  $100 million in
medium-term  notes.  The level of financing  of PSCCC is tied  directly to daily
changes in the level of PSCo's  outstanding  customer  accounts  receivable  and
monthly  changes  in  fossil  fuel  inventories  and will  vary  minimally  from
year-to-year  although  seasonal  fluctuations in the level of assets will cause
corresponding fluctuations in the level of associated financing.

      SPS has  available  a $200  million  committed  line of  credit,  expiring
February 26, 1999. This credit  facility,  which is being renewed,  is primarily
used to support  commercial  paper issued by SPS. At December 31, 1998,  SPS had
$86 million in commercial paper outstanding and $114 million was available under
this line of credit.

Accounting Pronouncements Issued But Not Yet Effective

      In March 1998,  the American  Institute of  Certified  Public  Accountants
issued  Statement  of  Position  98-1,  "Accounting  for the  Costs of  Computer
Software  Developed for Internal  Use".  This  statement  requires  companies to
expense  costs as incurred in the  preliminary  project  stage,  training,  data
conversion,  internal maintenance and other indirect payroll related costs. This
statement is not expected to have a material impact on the Company, PSCo or SPS.
This Statement is effective for fiscal years  beginning after December 15, 1998,
with  earlier  adoption  encouraged.  The  Company  will adopt  this  accounting
standard as required on January 1, 1999.

      In April 1998,  the American  Institute of  Certified  Public  Accountants
issued  Statement  of  Position  98-5,  "Reporting  on  the  Costs  of  Start-Up
Activities".  This statement  requires  companies to expense  incurred costs for
start-up  activities,  including  organizational  costs.  This  statement is not
expected  to have a  material  impact on the  Company's  consolidated  financial
statements.  This  statement  is  effective  for fiscal  years  beginning  after
December 15, 1998, with earlier adoption encouraged. The Company will adopt this
accounting standard as required by January 1, 1999.

      In June 1998,  the FASB issued SFAS No. 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.  The  Company  is  currently  evaluating  the
potential  impact of this new accounting  standard.  This statement is effective
for  fiscal  years  beginning  after  June  15,  1999,  with  earlier   adoption
encouraged.  The  Company  will adopt this  accounting  standard  as required by
January 1, 2000.


                                       41
<PAGE>


Item 7a.  Quantitative  and  Qualitative  Disclosure  About  Market Risk (NCE,
PSCo, and SPS)

      Reference is made to the "Risk Management" section in Item 7. MANAGEMENT'S
DISCUSSION AND ANALYSIS OF FINANCIAL  CONDITION AND RESULTS OF OPERATIONS  (NCE,
PSCo and SPS).



                                       42
<PAGE>



Item 8.  Financial Statements and Supplementary Data (NCE)

           REPORT OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS

The Board of Directors of the Company addresses its oversight responsibility for
the consolidated  financial  statements  through its Audit Committee.  The Audit
Committee  meets  regularly  with the  independent  public  accountants  and the
internal  auditor to discuss results of their audit work and their evaluation of
the adequacy of the internal controls and the quality of financial reporting.

In fulfilling its  responsibilities in 1998, the Audit Committee  recommended to
the Board of Directors,  subject to shareholder  approval,  the selection of the
Company's  independent  public  accountants.  The Audit  Committee  reviewed the
overall scope and specific  plans of the  independent  public  accountants'  and
internal auditor's  respective audit plans, and discussed the independent public
accountants'  management  letter  recommendations,  approved their general audit
fees, and reviewed their non-audit services to the Company.

The committee  meetings are designed to  facilitate  open  communications  among
Company  management,  internal auditing,  independent public accountants and the
Audit Committee.  To ensure auditor  independence,  both the independent  public
accountants  and  internal  auditor  have  full and  free  access  to the  Audit
Committee.




Danny H. Conklin, Chairman
Audit Committee

February 23, 1999

                                       43
<PAGE>


                             REPORT OF MANAGEMENT

The  accompanying  financial  statements  of  New  Century  Energies,  Inc.  and
subsidiaries  have  been  prepared  by  Company  personnel  in  conformity  with
generally accepted accounting  principles  consistent with the Uniform System of
Accounts  of  the  Federal  Energy  Regulatory  Commission.  The  integrity  and
objectivity of the data in these financial  statements are the responsibility of
management.  Financial  information contained elsewhere in this Annual Report on
Form 10-K is consistent with that in the financial statements.

The accompanying  financial  statements have been audited by independent  public
accountants. Management has made available to its independent public accountants
all the Company's and its  subsidiaries'  financial records and related data and
has provided to them representations we believe to be valid and appropriate.

The Company  maintains a system of internal  control over  financial  reporting,
including the safeguarding of assets against  unauthorized  acquisition,  use or
disposition,  which is designed to provide reasonable assurance to the Company's
management  and  Board  of  Directors  regarding  the  preparation  of  reliable
published financial statements and such asset safeguarding.  The system includes
a  documented   organizational   structure   and  division  of   responsibility,
established  policies  and  procedures  including  a code of conduct to foster a
strong ethical climate,  which are communicated  throughout the Company, and the
careful  selection,  training and development of our people.  Internal  auditors
monitor the  operation of the internal  control  system and report  findings and
recommendations to management and the Audit Committee of the Board of Directors,
and  corrective  actions  are taken to address  control  deficiencies  and other
opportunities  for  improving  the  system as they are  identified.  The  board,
operating  through its Audit Committee,  which is composed entirely of directors
who are not  officers or employees  of the  Company,  provides  oversight to the
financial reporting process.

There are inherent  limitations in the  effectiveness  of any system of internal
control,  including  the  possibility  of human error and the  circumvention  or
overriding of controls.  Accordingly,  even an effective internal control system
can provide  only  reasonable  assurance  with  respect to  financial  statement
preparation.  Further, because of changes in conditions, internal control system
effectiveness may vary over time.

The Company  assessed  its  internal  control  system as of December 31, 1998 in
relation to criteria for effective  internal  control over  financial  reporting
described in "Internal  Control - Integrated  Framework" issued by the Committee
of Sponsoring Organizations of the Treadway Commission.  Based on the results of
its  assessment,  the Company  believes  that,  as of  December  31,  1998,  the
Company's  system  of  internal  control  over  external  financial   reporting,
including the safeguarding of assets against  unauthorized  acquisition,  use or
disposition, met those criteria.




Teresa S. Madden                          Bill D. Helton
Principal Accounting Officer              Chief Executive Officer

February 23, 1999


                                       44
<PAGE>


                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

TO NEW CENTURY ENERGIES, INC.:

We have audited the consolidated balance sheets of New Century Energies, Inc. (a
Delaware corporation) and subsidiaries as of December 31, 1998 and 1997, and the
related consolidated  statements of income,  shareholders' equity and cash flows
for each of the  three  years in the  period  ended  December  31,  1998.  These
financial  statements and the schedule referred to below are the  responsibility
of the  Company's  management.  Our  responsibility  is to express an opinion on
these  financial  statements and schedule based on our audits.  We did not audit
the consolidated financial statements of Southwestern Public Service Company for
the year  ended  December  31,  1996,  included  in the  consolidated  financial
statements  of New  Century  Energies,  Inc.,  which  statements  reflect  total
revenues  constituting 31% in 1996, of the related  consolidated  totals.  Those
statements  were  audited  by  other  auditors  whose  report  thereon  has been
furnished to us, and our opinion expressed herein,  insofar as it relates to the
amounts included for Southwestern  Public Service Company,  is based solely upon
the report of the other auditors.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits and the report of other auditors provide a reasonable
basis for our opinion.

In our  opinion,  based upon our audits  and the report of other  auditors,  the
consolidated  financial  statements  referred to above  present  fairly,  in all
material respects, the financial position of New Century Energies,  Inc. and its
subsidiaries  as of  December  31,  1998  and  1997,  and the  results  of their
operations  and their cash flows for each of the three years in the period ended
December 31, 1998, in conformity with generally accepted accounting principles.

Our  audits  were  made for the  purpose  of  forming  an  opinion  on the basic
financial  statements  taken as a whole.  The  schedule  listed  in the index of
financial  statements is presented for purposes of complying with the Securities
and  Exchange  Commission's  rules  and  is not  part  of  the  basic  financial
statements.  This schedule has been subjected to the auditing procedures applied
in our audits of the basic  financial  statements  and, in our  opinion,  fairly
states in all material  respects  the  financial  data  required to be set forth
therein in relation to the basic financial statements taken as a whole.


                                                        ARTHUR ANDERSEN LLP
Denver, Colorado
February 23, 1999


                                       45
<PAGE>


                        NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                                CONSOLIDATED BALANCE SHEETS
                                   (Thousands of Dollars)
                                 December 31, 1998 and 1997

                                           ASSETS

                                                             1998       1997 
                                                             ----       ---- 

Property, plant and equipment, at cost:
   Electric ..........................................   $7,097,070  $6,703,863
   Gas................................................    1,210,605   1,136,231
   Steam and other....................................      111,620     120,322
   Common to all departments..........................      423,287     437,636
   Construction in progress...........................      391,100     318,124
                                                            -------     -------
                                                          9,233,682   8,716,176
   Less: accumulated depreciation ....................    3,351,659   3,182,800
                                                          ---------   ---------
     Total property, plant and equipment..............    5,882,023   5,533,376
                                                          ---------   ---------



Investments, at cost:
   Investment in Yorkshire Power and other 
     unconsolidated subsidiaries (Note 2).............      340,874     299,458
   Other..............................................       64,562      71,411
                                                            -------      ------
    Total investments.................................      405,436     370,869
                                                            -------     -------


Current assets:
   Cash and temporary cash investments................       56,667      72,623
   Accounts receivable, less reserve for uncollectible
     accounts ($4,842 at December 31, 1998; $5,355 
     at December 31, 1997)............................      319,145     315,539
   Accrued unbilled revenues..........................      130,455     110,877
   Recoverable purchased gas and electric energy 
     costs - net .....................................       66,154     129,292
   Materials and supplies, at average cost............       69,298      68,411
   Fuel inventory, at average cost....................       24,653      23,162
   Gas in underground storage, at cost (LIFO).........       52,624      47,394
   Prepaid expenses and other.........................       83,561      56,868
                                                            -------      ------
    Total current assets..............................      802,557     824,166
                                                            -------     -------

Deferred charges:
   Regulatory assets (Note 1).........................      381,632     430,475
   Unamortized debt expense ..........................       27,408      20,833
   Other..............................................      172,908     141,947
                                                            -------     -------
    Total deferred charges............................      581,948     593,255
                                                            -------     -------
                                                         $7,671,964  $7,321,666
                                                         ==========  ==========


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

                                       46
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             (Thousands of Dollars)
                           December 31, 1998 and 1997

                             CAPITAL AND LIABILITIES

                                                           1998       1997 
                                                           ----       ---- 
                                                         

Common stock (Note 4)................................   $1,866,386  $1,694,195
Retained earnings....................................      740,677     659,050
Accumulated comprehensive income.....................        7,764       4,142
                                                           -------      ------
    Total common equity..............................    2,614,827   2,357,387

Preferred stock of subsidiaries (Note 4):
   Not subject to mandatory redemption...............            -     140,002
   Subject to mandatory redemption at par............            -      39,253
PSCo and SPS obligated mandatorily redeemable
   preferred securities of subsidiary trusts holding
   solely subordinated debentures of PSCo and SPS
   (Note 5)..........................................      294,000     100,000
Long-term debt of subsidiaries (Note 6)..............    2,205,545   1,987,955
                                                         ---------   ---------
                                                         5,114,372   4,624,597

Noncurrent liabilities:
   Employees' postretirement benefits other than
   pensions (Note 12) ................................      61,732      62,716
   Employees' postemployment benefits (Note 12).......      31,326      27,953
                                                           -------      ------
    Total noncurrent liabilities......................      93,058      90,669
                                                           -------      ------

Current liabilities:
   Notes payable and commercial paper (Note 7)........      524,394    588,343
   Long-term debt due within one year.................      138,165    257,469
   Preferred stock subject to mandatory redemption 
     within one year .................................            -      2,576
   Accounts payable...................................      285,080    298,469
   Dividends payable..................................       69,271     68,296
   Recovered electric energy costs - net..............       18,760          -
   Customers' deposits................................       30,793     27,993
   Accrued taxes......................................       85,384     66,587
   Accrued interest...................................       50,229     52,615
   Current portion of accumulated deferred income 
     taxes (Note 13) .................................        2,031     27,391
   Other..............................................      120,716     94,623
                                                            -------     ------
    Total current liabilities.........................    1,324,823  1,484,362
                                                          ---------  ---------

Deferred credits:
   Customers' advances for construction...............       55,400     53,041
   Unamortized investment tax credits ................      100,925    106,147
   Accumulated deferred income taxes (Note 13)........      947,247    922,341
   Other..............................................       36,139     40,509
                                                            -------     ------
    Total deferred credits............................    1,139,711  1,122,038
                                                          ---------  ---------

Commitments and contingencies (Notes 9 and 10)........   ---------- ----------
                                                         $7,671,964 $7,321,666
                                                         ========== ==========


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


                                       47
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                  (Thousands of Dollars, Except per Share Data)
                  Years ended December 31, 1998, 1997 and 1996


                                                   1998       1997      1996 
                                                   ----       ----      ----
Operating revenues:
   Electric................................    $2,697,486 $2,473,359 $2,416,539
   Gas.....................................       841,276    816,596    640,497
   Other...................................        72,143     52,570     39,998
                                                  -------    -------     ------
                                                3,610,905  3,342,525  3,097,034

Operating expenses:
   Fuel used in generation...................     644,311    671,805    635,280
   Purchased power...........................     712,887    531,487    510,582
   Cost of gas sold..........................     562,583    543,291    393,163
   Other operating and maintenance expenses..     637,743    594,359    568,581
   Depreciation and amortization.............     268,743    243,078    224,865
   Taxes (other than income taxes) ..........     134,137    129,280    128,980
                                                  -------    -------    -------
                                                2,960,404  2,713,300  2,461,451
                                                ---------  ---------  ---------
Operating  income............................     650,501    629,225    635,583

Other income and deductions:
   Merger expenses...........................        (790)   (34,088)   (21,107)
   Write-off of investments in cogeneration 
     projects (Note 3) ......................           -    (16,052)   (15,546)
   Equity in earnings of Yorkshire Power and 
     other unconsolidated subsidiaries (Note 2)    36,101     34,166        389
   Miscellaneous income and deductions - net..     (3,460)   (11,215)     1,771
                                                   ------    -------     ------
                                                   31,851    (27,189)   (34,493)

Interest charges and preferred dividends 
  of subsidiaries:
   Interest on long-term debt.................    168,184    165,560    144,067
   Other interest.............................     31,069     32,389     23,479
   Allowance for borrowed funds used during 
     construction ............................    (17,347)   (10,921)    (5,945)
   Dividends on PSCo and SPS obligated 
     mandatorily redeemable preferred
     securities of subsidiary trusts holding
     solely subordinated debentures of PSCo
     and SPS .................................     17,561      7,850      1,526
   Dividend requirements and redemption premium
     on preferred stock of subsidiaries ......      5,332     11,752     11,969
                                                    -----     ------     ------
                                                  204,799    206,630    175,096
                                                  -------    -------    -------
Income before income taxes and 
  extraordinary item .........................    477,553    395,406    425,994

Income taxes (Note 13)........................    135,596    133,919    153,653
                                                  -------    -------    -------

Income before extraordinary item..............    341,957    261,487    272,341
Extraordinary item - U.K. windfall tax (Note 2).        -   (110,565)         -
                                                  -------    --------    ------
Net income....................................   $341,957   $150,922   $272,341
                                                 ========   ========   ========

Weighted average common shares outstanding:
   Basic......................................    111,859    104,805    103,059
   Diluted....................................    112,008    104,872    103,102

Earnings per share of common stock outstanding
  - Basic:
   Income before extraordinary item...........      $3.06     $2.50       $2.64
   Extraordinary item.........................          -     (1.06)          -
                                                     ----     -----       -----
   Net income.................................      $3.06     $1.44       $2.64
                                                    =====     =====       =====
Earnings per share of common stock outstanding
  - Diluted:
   Income before extraordinary item...........       $3.05    $2.50       $2.64
   Extraordinary item.........................           -    (1.06)          -
                                                     -----    -----       -----
   Net income.................................       $3.05    $1.44       $2.64
                                                     =====    =====       =====

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

                                       48
<PAGE>



                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                 CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
                (Thousands of Dollars, Except Share Information)
                  Years ended December 31, 1998, 1997 and 1996

<TABLE>
<CAPTION>
                                                                                     Accumulated
                                                                                        Other
                              Common Stock, $1 par value       Paid       Retained    Comprehensive
                                   Shares         Amount     in Capital   Earnings      Income        Total 
                                   ------         ------     ----------   --------      ------        ----- 

<S>                              <C>            <C>          <C>            <C>         <C>         <C>
Balance at January 1, 1996..     102,230,141    $  102,230   $1,243,278     $ 726,065   $      -    $2,071,573
Net income/Comprehensive
  income ...................               -             -            -       272,341          -       272,341
Dividends declared on common
  stock ....................               -             -            -      (225,130)         -      (225,130)
Issuance of common stock:
  Employees' Savings Plan ..         274,934           275        9,519             -          -         9,794
  Dividend Reinvestment Plan         809,603           810       27,818             -          -        28,628
  Incentive Compensation Plans        58,346            58        1,661             -          -         1,719
  Acquisitions (Note 3) ....         317,748           318       10,882             -          -        11,200
Other.......................               -             -            -           (85)         -           (85)
                                     -------        ------      -------       -------    -------       -------

Balance at December 31, 1996     103,690,772       103,691    1,293,158        773,191         -     2,170,040
Comprehensive income:
  Net income................               -             -            -        150,922         -       150,922
  Foreign currency translation
    adjustment .............               -             -            -              -     4,142         4,142
                                                                                                         -----
      Comprehensive income
       (Note 1) ............                                                                           155,064
Dividends declared on common
   stock ...................               -             -            -       (264,957)        -      (264,957)
Issuance of common stock:
  Employees' Savings Plan ..         250,058           250        9,518              -         -         9,768
  Dividend Reinvestment Plan         818,783           819       32,512              -         -        33,331
  Incentive Compensation Plans        89,688            89        2,765              -         -         2,854
  Stock offering proceeds, net
   (Note 4) ..................     5,900,000         5,900      245,493              -         -       251,393
Other.........................             -             -            -           (106)        -          (106)
                                     -------        ------      -------        -------   -------       -------

Balance at December 31, 1997     110,749,301       110,749    1,583,446        659,050     4,142     2,357,387
Comprehensive income:
  Net income..........                     -             -            -        341,957         -       341,957
  Foreign currency translation 
    adjustment                             -             -            -              -     3,622         3,622
                                                                                                         -----
     Comprehensive income (Note 1)                                                                     345,579
Dividends declared on common stock         -             -            -       (260,330)        -      (260,330)
Issuance of common stock:
  Employees' Savings Plan            222,387           222       10,146              -         -        10,368
  Dividend Reinvestment Plan         825,005           825       37,198              -         -        38,023
  Incentive Compensation Plans       194,079           195        6,605              -         -         6,800
  Stock offering proceeds, net
   (Note 4)                        2,500,000         2,500      114,500              -         -       117,000
                                   ---------         -----      -------          -----     -----       -------
Balance at December 31, 1998     114,490,772    $  114,491   $1,751,895      $ 740,677    $7,764    $2,614,827
                                 ===========    ==========   ==========      =========    ======    ==========  

</TABLE>

Authorized  shares of common stock were 260 million at December  31, 1998,  1997
and 1996.

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


                                       49
<PAGE>


                   NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (Thousands of Dollars)
                  Years ended December 31, 1998, 1997 and 1996

                                                      1998      1997      1996
                                                      ----      ----     -----

Operating activities:
   Net income...................................    $341,957  $150,922 $272,341
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Extraordinary item - U.K. windfall tax 
       (Note 2) ................................           -   110,565        -
     Depreciation and amortization..............     279,829   253,263  225,264
     Amortization of investment tax credits.....      (5,222)   (5,501)  (7,506)
     Deferred income taxes......................       6,248    52,211   78,962
     Write-off of investments in cogeneration 
       projects (Note 3) .......................           -    16,052   15,546
     Equity in earnings of Yorkshire Power and
       other unconsolidated subsidiaries, net        (34,199)  (31,168)    (389)
     Allowance for equity funds used during
      construction .............................           -         1     (936)
     Change in accounts receivable..............       2,026   (29,627) (92,600)
     Change in inventories......................      (7,485)   (2,334)  23,479
     Change in other current assets.............      16,965   (97,063) (47,226)
     Change in accounts payable.................     (13,704)  (18,791) 141,771
     Change in other current liabilities........      69,908   (15,356) (85,321)
     Change in deferred amounts.................         740   (46,134) (34,617)
     Change in noncurrent liabilities...........       2,389     4,567   (9,725)
     Other......................................          87     2,832    2,139
                                                     -------   -------  -------
       Net cash provided by operating activities     659,539   344,439  481,182

Investing activities:
   Construction expenditures....................    (608,972) (475,497)(454,968)
   Allowance for equity funds used during 
     construction ..............................           -        (1)     936
   Proceeds from disposition of property, plant
     and equipment .............................       9,369     2,117   24,292
   Payment for purchase of companies, net of 
     cash acquired (Note 3) ....................     (13,725)        -    3,649
   Investment in Yorkshire Power (Note 2).......           -  (362,342)       -
   Purchase of other investments................      (6,131)  (32,560) (17,790)
   Sale of other investments....................       5,466    11,844      664
                                                     -------   -------  -------
       Net cash used in investing activities....    (613,993) (856,439)(443,217)

Financing activities:
   Proceeds from sale of common stock (Note 4)..     161,823   286,869   30,115
   Proceeds from sale of long-term debt (Note 6)     250,497   419,819  359,715
   Proceeds from sale of PSCo and SPS obligated 
    mandatorily redeemable preferred securities
    of subsidiary trusts holding solely 
    subordinated debentures of PSCo 
    and SPS (Note 6)............................     187,700         -  100,000
   Redemption of long-term debt.................    (159,323) (227,577)(175,298)
   Short-term borrowings - net..................     (63,949)  289,782 (105,739)
   Redemption of preferred stock of subsidiaries    (181,824)     (665)  (1,636)
   Dividends on common stock....................    (256,426) (233,620)(223,413)
                                                    --------  --------   ------
       Net cash (used in) provided by financing
         activities ............................     (61,502)  534,608  (16,256)
                                                     -------   -------   ------
       Net (decrease) increase in cash and 
          temporary cash investments ...........     (15,956)   22,608   21,709
       Cash and temporary cash investments at
          beginning of year                           72,623    50,015   51,553
       Net decrease in cash and temporary cash 
          investments for SPS for the
          transition period (Note 1)...........            -         -  (23,247)
                                                       -----     -----  -------
       Cash and temporary cash investments at 
          end of year .........................     $ 56,667  $ 72,623  $50,015
                                                    ========  ========  =======



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


                                       50
<PAGE>


Item 7.  Management's  Discussion  and  Analysis of  Financial  Condition  and
Results of Operations (PSCo)

      The following  narrative  analysis  discusses PSCo's results of operations
comparing the changes for the years ended December 31, 1998, 1997 and 1996. PSCo
merged with SPS effective August 1, 1997.  Effective with the Merger,  Cheyenne,
WGI, e prime and Natural Fuels were  transferred  by a declaration of a dividend
of the subsidiaries' stock, at net book value,  aggregating  approximately $49.9
million, to NCE. NCE subsequently made a capital contribution of the e prime and
Natural Fuels common stock, at net book value,  aggregating  approximately $29.5
million, to NC Enterprises.  Accordingly,  the consolidated statements of income
and cash flows for 1997 reflect the results of  operations  of Cheyenne,  WGI, e
prime and Natural  Fuels  through  July 31,  1997.  Where  relevant,  additional
information  has been  presented  to discuss the impact of the transfer of these
subsidiaries.   Certain   information  has  been  omitted  pursuant  to  General
Instructions I(2)(a). Discussion related to PSCo's Commitments and Contingencies
is covered  within  NCE's  Management's  Discussion  and  Analysis of  Financial
Condition and Results of Operations. See FORWARD LOOKING INFORMATION.

      In addition,  on March 31, 1998, NCI was  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.   The
consolidated statements of income and cash flows for 1998 reflect the results of
NCI through March 31, 1998 (See Note 2.  Investment in Yorkshire  Power and U.K.
Windfall Tax in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

Earnings Available for Common Stock

      Earnings  were $194.8  million,  $81.7 million and $178.5  million  during
1998,  1997  and  1996,  respectively.  The  significant  decrease  in 1997  was
primarily  attributable to the recognition of an  extraordinary  item related to
the one-time  U.K.  windfall  tax of  approximately  $110.6  million for its 50%
ownership in Yorkshire Power.  Excluding the impact of this extraordinary  item,
earnings  increased  slightly  from 1997 to 1998  primarily  due to higher  1998
electric margin resulting from customer growth and lower merger costs, offset in
part by the  sale of NCI to  NCT.  Excluding  the  impact  of the  extraordinary
charge,  earnings  increased  $13.7  million in 1997,  as compared to 1996, as a
result of customer  growth  contributing  to  increased  electric and gas sales,
lower operating and maintenance expenses as well as equity earnings.

Electric Operations

      The  following  table  details  the annual  change in  electric  operating
revenues and energy costs as compared to the preceding year (in thousands).

1998                                   Increase (Decrease) From Prior Year    
                                                 Cheyenne
                                        PSCo     & e prime    Total
                                        ----     ---------    -----
Electric operating revenues:
 Retail...........................    $ 40,850   $(21,492)   $ 19,358
 Wholesale - regulated............     104,994          -     104,994
 Non-regulated power marketing....           -    (10,448)    (10,448)
 Other (including unbilled revenues)    36,492        (19)     36,473
                                        ------      -----      ------
  Total revenues..................     182,336    (31,959)    150,377
Fuel used in generation...........      13,478          -      13,478
Purchased power...................     121,546    (25,811)     95,735
                                       -------    -------      ------
  Net increase (decrease) in 
  electric margin ................     $47,312   $ (6,148)    $41,164
                                       =======   ========     =======


                                       51
<PAGE>


1997                                   Increase (Decrease) From Prior Year    
                                                  Cheyenne
                                        PSCo      & e prime     Total      
                                        ----      ---------     -----      
Electric operating revenues:
 Retail...........................     $(15,167)  $(16,305)  $(31,472)
 Wholesale - regulated............       25,083          -     25,083
 Non-regulated power marketing....            -      2,642      2,642
 Other (including unbilled revenues)        (25)       (22)       (47)
                                            ---        ---        ---
  Total revenues..................        9,891    (13,685)    (3,794)
Fuel used in generation...........        3,264          -      3,264
Purchased power...................       13,340     (9,866)     3,474
                                        -------    --------  --------
  Net decrease in electric margin.      $(6,713)   $(3,819)  $(10,532)
                                        =======    =======   ========

   The following table compares electric Kwh sales by major customer classes.

                          Millions of Kwh Sales      % Change From Prior Year *
                                                 1998               1997      
                                             --------------    ---------------
                                              Consoli   PSCo  Consoli    PSCo
                              1998     1997    dated    Only    dated     Only
                              ----     ----     -----   ----    -----     ----
Residential ..............    6,761    6,663     1.5%   3.4%    0.8%      2.1%
Commercial and Industrial.   15,610   15,621    (0.1)   2.3    (0.3)      1.3
Public Authority .........      207      189     9.4   10.8    (5.5)     (4.6)
                             ------   ------
  Total Retail............   22,578   22,473     0.5    2.7     -         1.5
Wholesale - Regulated.....    7,874    4,491    75.3   75.3    33.6      33.6
Non-regulated Power
  Marketing ..............        -      660     **     **     57.7       -
                              -----     ----
Total.....................   30,452   27,624    10.2   15.0     5.2       5.8
                             ======   ======

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

      Electric margin increased in 1998, when compared to 1997, primarily due to
higher retail sales of 2.7% resulting from customer growth of approximately 1.8%
and the  positive  impact  of a lower  1998  accrual  related  to the  estimated
customer refund obligation  (approximately  $9.6 million) in connection with the
earnings  sharing  in excess of 11%  return  on equity  (see Note 9.  Regulatory
Matters  in  Item  8.  FINANCIAL  STATEMENTS  AND  SUPPLEMENTARY  DATA).  Higher
wholesale electric sales, reflecting increased marketing activities for economy,
short-term  firm  and  off-system  sales,  contributed  to  increased  operating
revenues; however, the margin on such sales is minimal. Electric margin revenues
decreased  in 1997,  when  compared  to 1996,  primarily  due to the retail rate
reductions  (approximately  $15.4  million)  implemented  in  October  1996  and
February 1997 and the  recognition of an estimated  customer  refund  obligation
(approximately  $16.4 million) in connection with the earnings sharing in excess
of 11%  return on  equity.  Higher  economy  sales by PSCo and  power  marketing
activities  of  non-regulated   subsidiaries  contributed  to  the  increase  in
wholesale revenues but had little impact on electric margin.

      PSCo has 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.  In its decision on the Merger,
the CPUC  replaced  PSCo's ECA with an ICA,  effective  October  1, 1996,  which
allows for a 50%/50%  sharing of certain  fuel and  energy  cost  increases  and
decreases among customers and  shareholders.  For 1998 and 1997, the ICA did not
significantly  impact electric margin (see Note 9. Regulatory Matters in Item 8.
FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

      Fuel used in  generation  expense  increased  approximately  $13.5 million
during 1998, as compared to 1997,  primarily due to increased  generation levels
at PSCo's power  plants.  Fuel used in  generation  expense  increased  slightly
during 1997, as compared to prior year,  due to increased  generation  levels at
PSCo's power plants offset in part, by lower coal supply costs.

                                       52
<PAGE>

      Purchased power expense increased approximately $95.7 million during 1998,
as compared to 1997,  primarily  due to  purchases to meet  increased  wholesale
marketing activities. Purchased power expense increased slightly during 1997, as
compared  to the  prior  year,  primarily  due to  purchases  to meet  increased
wholesale requirements, other customer demands and non-regulated power marketing
sales commitments.  The increase in 1997 was offset, in part, by the recognition
of only seven months of Cheyenne and e prime costs in 1997.

Gas Operations

      The  following  table details the annual change in revenues from gas sales
and gas purchased for resale as compared to the preceding year (in thousands).

1998                                      Increase (Decrease) From Prior Year 
                                                    Cheyenne
                                                  Natural Fuels
                                                      WGI &
                                             PSCo    e prime        Total 
                                             ----    -------        -----
Revenues from gas sales (including 
  unbilled revenues) ..................    $15,122  $(110,156)   $ (95,034)
Gas purchased for resale...............     14,078   (101,269)     (87,191)   
                                            ------   --------      -------

  Net increase (decrease) in gas sales
   margin .............................      1,044     (8,887)      (7,843)
Transportation, gathering, and 
  processing revenues .................      2,464       (457)       2,007
                                             -----       ----        -----
  Increase (decrease) in gas margin....     $3,508  $  (9,344)   $  (5,836)
                                            ======  =========    =========

1997                                      Increase (Decrease) From Prior Year 
                                                    Cheyenne
                                                  Natural Fuels
                                                      WGI &
                                             PSCo    e prime       Total 
                                             ----    -------       -----
Revenues from gas sales (including
  unbilled revenues) ..................    $62,504  $  26,538    $  89,042
Gas purchased for resale...............     44,500     30,082       74,582
                                            ------     ------       ------
  Net increase (decrease) in gas sales
    margin ............................     18,004     (3,544)      14,460
Transportation, gathering, and
 processing revenues ..................      4,068       (516)       3,552
                                             -----    -------        -----
  Increase (decrease) in gas margin....    $22,072  $  (4,060)   $  18,012
                                           =======  =========    =========

   The  following  table  compares gas  dekatherm  ("Dth")  deliveries  by major
customer classes.

                              Millions of        % Change From Prior Year *   
                             Dth Deliveries      1998               1997      
                                               Consoli  PSCo    Consoli   PSCo
                              1998     1997     dated   Only    dated     Only
                              ----     ----     -----   ----    -----     ----
Residential ..............    82.2      86.6    (5.1)% (3.2)%   0.6%      1.5%
Commercial................    40.2      46.9   (14.2) (11.7)   (9.3)     (7.1)
Non-regulated gas marketing      -      35.2    **       -     61.2        -
                              ----      ----  
  Total sales.............   122.4     168.7   (27.4)  (6.2)    5.7      (1.7)
Transportation, gathering
  and processing              90.7      86.9     4.5   17.3    (5.0)      3.1
                              ----      ----
  Total...................   213.1     255.6   (16.6)   2.5     1.8       -
                             =====    ======

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

      Gas  sales  margin  increased  in 1998  and  1997,  when  compared  to the
respective  preceding year, primarily due to an increase in PSCo's base revenues
associated with the higher rates effective February 1, 1997,  resulting from the
1996 rate case. This increase in 1998 was offset, in part, by a 6.2% decrease in
PSCo's  retail gas sales,  which  resulted  from warmer  weather  despite a 2.8%
increase in customers.  Gas marketing  activities by non-regulated  subsidiaries
favorably contributed to the gas sales margin in 1997 and 1996.


                                       53
<PAGE>

      Gas   transportation,   gathering  and   processing   revenues   increased
approximately  $2.0 million and $3.6  million,  when  compared to 1997 and 1996,
respectively,  primarily due to an increase in transport  deliveries  and higher
transportation  rates effective  February 1, 1997,  resulting from the Company's
1996 rate case. The increase in transport deliveries continues to be impacted by
the shifting of various  commercial  customers  to  transport  customers as such
customers procure their unbundled gas supply from other sources.

      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 cost on a timely  basis.  As a
result,  the changes in revenues  associated  with these  mechanisms in 1998 and
1997,  when compared to the respective  preceding year, had little impact on net
income.  However,  the  fluctuations  in gas sales impact 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.  In 1998,  lower
quantities  of gas were  purchased  during the year along with a decrease in the
per-unit  cost of gas,  served to reduce the cost of gas  purchased  for resale;
however,  these  decreases  were offset in part,  by the  recovery of prior year
deferred gas costs.  This  recovery was greater than the decrease in  purchases,
thereby  increasing  the cost of gas.  During 1997,  there were higher  per-unit
average  costs of gas,  along with  increases in the quantity of gas  purchased,
which contributed to the increase in cost of gas purchased for resale.

Non-Fuel Operating Expenses

      Other operating and maintenance  expenses  increased  approximately  $12.1
million  during 1998 as compared to 1997  primarily due to electric  operations,
including  higher  distribution  costs to serve new  customers  and a $5 million
reduction in the  decommissioning  liability  during 1997.  Other  operating and
maintenance expenses decreased $8.8 million during 1997 as compared to the prior
year,  primarily due to lower labor and employee  benefit costs, the recognition
in  1997  of only  seven  months  of  costs  from  the  subsidiaries  that  were
transferred  to NCE  effective  with the  Merger  and other  general  reductions
resulting from the Merger and cost  containment  efforts.  These  decreases were
offset,  in part,  by the  favorable  impact of the February 9, 1996  settlement
agreement  with the DOE  resolving  all spent  nuclear fuel storage and disposal
issues at Fort St. Vrain (See Note 10.  Commitments and Contingencies - Fort St.
Vrain in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

      Depreciation and amortization  expense increased $12.5 million in 1998 and
$13.8 million in 1997 primarily due to the  depreciation  of property  additions
and the higher amortization of software costs.

      Income  taxes  increased  $10.7  million  in 1998,  as  compared  to 1997,
primarily  due to higher  pre-tax  income and lower  foreign tax credits as PSCo
transferred its investment in Yorkshire Power,  effective March 31, 1998. Income
taxes  decreased $5.5 million in 1997, as compared to prior year,  primarily due
to the  recognition  of foreign tax credits.  Additional  income tax expense was
recognized in 1997 due to higher  non-deductible  merger and executive severance
costs.

Other Income and Deductions

      Other  income and  deductions  increased  $3.5 million  during 1998,  when
compared  to  1997,  primarily  due  to  the  absence  of  Merger  and  business
integration costs and legal costs associated with various employee lawsuits.  In
addition,  equity in earnings from Yorkshire  Power decreased as a result of the
sale of NCI to NC Enterprises in exchange for a promissory note, effective March
31, 1998.  This  decrease in equity  earnings was offset,  in part,  by interest
income recognized on the note receivable ($14.2 million). See Note 2. Investment
in Yorkshire  Power and U.K.  Windfall Tax in Item 8.  FINANCIAL  STATEMENTS AND
SUPPLEMENTARY  DATA. Other income and deductions  increased $27.4 million during
1997,  when compared to prior year,  primarily due to the  recognition of equity
earnings in Yorkshire  Power ($34.9  million).  Merger and business  integration
costs  increased in 1997 by $7.5 million,  when compared to the preceding  year.
The 1997  amount  included  executive  severance  costs  and other  costs  which
resulted from the closing of the Merger effective August 1, 1997.


                                       54
<PAGE>


Interest Charges

      Interest  charges and  dividend  requirements  and  redemption  premium on
preferred  stock  decreased  $4.3 million  during 1998,  when  compared to 1997.
Proceeds from the issuance of $250 million of long-term  debt in April 1998 were
used, in part, to reduce  short-term  debt.  Higher interest costs on additional
long-term  debt,  net of  retirements,  were offset,  in part, by lower interest
rates.  Other  interest  expense  decreased  primarily  due to lower  short-term
borrowings.  The increase in dividends on PSCo obligated mandatorily  redeemable
preferred securities of subsidiary trust holding solely subordinated  debentures
of PSCo  which  were  issued  in May 1998  (see  Note 5.  Obligated  Mandatorily
redeemable  Preferred Securities of subsidiary Trust Holding Solely Subordinated
Debentures in Item 8. FINANCIAL  STATEMENTS AND  SUPPLEMENTARY  DATA).  Interest
charges and dividends on preferred  stock  increased  $26.4 million during 1997,
when  compared  to the prior  year,  primarily  due to  interest  on  borrowings
utilized  to  finance  capital  expenditures  and the April 1997  investment  in
Yorkshire Power. These financings included the issuance of medium-term notes and
an increased level of short-term borrowings.

Liquidity and Capital Resources

Prospective Capital Requirements

      The estimated cost as of December 31, 1998, of the  construction  programs
of PSCo and its subsidiaries and other capital  requirements for the years 1999,
2000 and 2001 are shown in the table below (in millions):

                                             1999        2000      2001 
                                           -------      ------    ------
Electric
    Production..........................   $   117      $  117    $   76
    Transmission........................        16          46        23
    Distribution........................       151         108       134
Gas ....................................        79          80        82
General.................................        74          55        55
Non-utility.............................         4           2         1
                                           -------      ------    ------
      Total construction expenditures...       441         408       371
Less: AFDC..............................        13           9        10
Add: Sinking funds and debt maturities
 and refinancings ......................        89          31       140
                                                --          --       ---
      Total capital requirements........   $   517      $  430    $  501
                                           =======      ======    ======

      The  construction  programs  of PSCo and its  subsidiaries  are subject to
continuing  review  and  modification.   In  particular,   actual   construction
expenditures  may vary from the estimates due to changes in the electric  system
projected  load  growth,  the desired  reserve  margin and the  availability  of
purchased  power,  as well as  alternative  plans for meeting  PSCo's  long-term
energy needs. In addition,  PSCo's ongoing  evaluation of asset  acquisition and
divestiture   opportunities   to  support   corporate   strategies   and  future
requirements  to install  emission  control  equipment may impact actual capital
requirements (see Note 10. Commitments and Contingencies - Environmental  Issues
in Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

Capital Sources

      At  December  31,  1998,  PSCo and its  subsidiaries  estimate  that their
1999-2001 capital  requirements,  as summarized above, and the payment of common
stock  dividends to NCE will be met with a  combination  of funds from  external
sources  and funds from  operations.  PSCo and its  subsidiaries  may meet their
external capital requirements through capital contributions by NCE, the issuance
of secured or  unsecured  long-term  and  short-term  debt and the sale of other
securities  by PSCo and its  subsidiaries.  The  financing  needs are subject to
continuing review and can change depending on market and business conditions and
changes, if any, in the construction  programs and other capital requirements of
PSCo and its subsidiaries.

                                       55
<PAGE>


Item 8. Financial Statements and Supplementary Data (PSCo)

                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO PUBLIC SERVICE COMPANY OF COLORADO:

We have audited the accompanying  consolidated  balance sheets and statements of
capitalization  of Public Service  Company of Colorado (a Colorado  corporation)
and subsidiaries as of December 31, 1998 and 1997, and the related  consolidated
statements of income,  shareholder's equity and cash flows for each of the three
years in the period ended December 31, 1998. These financial  statements and the
schedule referred to below are the  responsibility of the Company's  management.
Our  responsibility  is to express an opinion on these financial  statements and
schedule based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the  financial  position of Public  Service  Company of
Colorado and  subsidiaries  as of December 31, 1998 and 1997, and the results of
their  operations and their cash flows for each of the three years in the period
ended  December 31, 1998,  in  conformity  with  generally  accepted  accounting
principles.

Our  audits  were  made for the  purpose  of  forming  an  opinion  on the basic
financial  statements  taken as a whole.  The  schedule  listed  in the index of
financial  statements is presented for purposes of complying with the Securities
and  Exchange  Commission's  rules  and  is not  part  of  the  basic  financial
statements.  This schedule has been subjected to the auditing procedures applied
in our audits of the basic  financial  statements  and, in our  opinion,  fairly
states in all material  respects  the  financial  data  required to be set forth
therein in relation to the basic financial statements taken as a whole.



                                                        ARTHUR ANDERSEN LLP
Denver, Colorado
February 23, 1999


                                       56
<PAGE>

                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             (Thousands of Dollars)
                           December 31, 1998 and 1997

                                     ASSETS

                                                             1998      1997 
                                                             ----      ---- 

Property, plant and equipment, at cost:
   Electric ..........................................    $4,369,134 $4,088,447
   Gas................................................     1,171,198  1,100,003
   Steam and other....................................        71,986     78,740
   Common to all departments..........................       418,484    432,840
   Construction in progress...........................       264,752    170,503
                                                             -------    -------
                                                           6,295,554  5,870,533
   Less: accumulated depreciation ....................     2,241,165  2,145,673
                                                           ---------  ---------
     Total property, plant and equipment..............     4,054,389  3,724,860
                                                           ---------  ---------

Investments, at cost:
   Investment in Yorkshire Power (Note 2).............             -    290,845
   Note receivable from affiliate (Note 2)............       192,620          -
   Other..............................................        22,664     43,311
                                                             -------     ------
    Total investments.................................       215,284    334,156
                                                             -------    -------

Current assets:
   Cash and temporary cash investments................        19,926     18,909
   Accounts receivable, less reserve for uncollectible
     accounts ($2,254 at December 31, 1998;
     $2,272  at December 31, 1997) ...................       172,587    183,063
   Accrued unbilled revenues .........................       119,856     94,284
   Recoverable purchased gas and electric energy costs
    - net ............................................        62,761    103,197
   Materials and supplies, at average cost............        47,881     48,030
   Fuel inventory, at average cost....................        22,361     20,862
   Gas in underground storage, at cost (LIFO).........        51,779     46,576
   Prepaid expenses and other.........................        46,523     47,686
                                                             -------     ------
    Total current assets..............................       543,674    562,607
                                                             -------    -------

Deferred charges:
   Regulatory assets (Note 1).........................       269,112    310,658
   Unamortized debt expense ..........................        17,874     10,800
   Other..............................................        77,303     55,794
                                                             -------     ------
    Total deferred charges............................       364,289    377,252
                                                              -------   -------
                                                          $5,177,636 $4,998,875
                                                          ========== ========== 


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

                                       57
<PAGE>


                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             (Thousands of Dollars)
                           December 31, 1998 and 1997

                             CAPITAL AND LIABILITIES

                                                               1998      1997 
                                                               ----      ---- 



Common stock......................................       $1,302,119  $1,302,119
Retained earnings.................................          325,213     319,280
Accumulated comprehensive income..................                -       4,142
                                                            -------     -------
    Total common equity...........................        1,627,332   1,625,541

Preferred stock (Note 4):
   Not subject to mandatory redemption............                -     140,002
   Subject to mandatory redemption at par.........                -      39,253
PSCo obligated mandatorily redeemable preferred 
  securities of subsidiary trust holding solely
  subordinated debentures of PSCo (Note 5) .......          194,000           -
Long-term debt (Note 6)...........................        1,643,130   1,338,138
                                                          ---------   ---------
                                                          3,464,462   3,142,934
                                                          ---------   ---------
Noncurrent liabilities:
   Employees' postretirement benefits other than
    pensions (Note 12) ...........................           55,537      58,695
   Employees' postemployment benefits (Note 12)...           27,195      25,031
                                                            -------     -------
    Total noncurrent liabilities..................           82,732      83,726
                                                            -------     -------

Current liabilities:
   Notes payable and commercial paper (Note 7).....         402,795     348,555
   Long-term debt due within one year..............          44,481     257,160
   Preferred stock subject to mandatory redemption 
     within one year ..............................               -       2,576
   Accounts payable................................         226,712     189,998
   Dividends payable...............................          46,461      40,975
   Customers' deposits.............................          23,902      21,888
   Accrued taxes...................................          57,848      42,549
   Accrued interest................................          36,729      39,177
   Current portion of accumulated deferred income 
     taxes (Note 13) .............................            8,142      19,872
   Other...........................................          68,729      88,655
                                                            -------     -------
    Total current liabilities......................         915,799   1,051,405
                                                            -------   ---------

Deferred credits:
   Customers' advances for construction............          54,260      51,830
   Unamortized investment tax credits .............          94,459      99,355
   Accumulated deferred income taxes (Note 13).....         538,581     534,246
   Other...........................................          27,343      35,379
                                                            -------     -------
    Total deferred credits.........................         714,643     720,810
                                                            -------     -------

Commitments and contingencies (Notes 9 and 10).....      ----------  ---------- 
                                                         $5,177,636  $4,998,875
                                                         ==========  ==========



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

                                       58
<PAGE>
                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                    CONSOLIDATED STATEMENTS OF CAPTALIZATION
                (Thousands of Dollars, Except Share Information)
                           December 31, 1998 and 1997

                                                               1998      1997 
                                                               ----      ---- 
Common shareholder's equity:
   Common stock, $0.01 par value, authorized and
    outstanding 100 shares in 1998 and 1997                 $      -  $       -
   Paid in capital...................................      1,302,119  1,302,119
   Retained earnings.................................        325,213    319,280
   Accumulated comprehensive income..................              -      4,142
                                                             -------    -------
    Total common shareholder's equity................      1,627,332  1,625,541
                                                           ---------  ---------

Preferred stock (Note 4):
                         Shares Issued and Outstanding 
                         ----------------------------- 
                                   1998       1997 
                                   ----       ---- 
$100 Par Value, 
  Authorized 3,000,000 Shares
   Not subject to mandatory
    redemption
     4.20% series                    -      100,000                -     10,000
     4.25% series (includes
       $7,500 premium)               -      174,997                -     17,507
     4.50% series                    -       65,000                -      6,500
     4.64% series                    -      159,950                -     15,995
     4.90% series                    -      150,000                -     15,000
     4.90% 2nd series                -      150,000                -     15,000
     7.15% series                    -      250,000                -     25,000
                                ------      -------          -------     ------
                                     -    1,049,947                -    105,002
                                ------    ---------          -------    -------
   Subject to mandatory 
     redemption
     7.50% series                    -      216,000                -     21,600
     8.40% series                    -      202,294                -     20,229
                                ------      -------           ------     ------
                                     -      418,294                -     41,829
   Less:  Preferred stock 
     subject to mandatory
     redemption within
      one year                       -      (25,760)               -     (2,576)
                                ------      -------           ------     ------
                                     -      392,534                -     39,253
                                ------      -------           ------     ------
$25 Par Value, Authorized 
   4,000,000 Shares
   Not subject to mandatory
     redemption
     8.40% series                    -    1,400,000                -     35,000
                                ------    ---------          -------     ------

$0.01 Par Value, Authorized
   10,000,000 Shares                 -            -                -          -
                                ------       ------          -------     ------
   Total preferred stock             -    2,842,481                -    179,255
                                ------    ---------          -------    -------

PSCo obligated mandatorily redeemable preferred
 securities of subsidiary trust holding solely
 subordinated debentures of PSCo (Note 5) ...........        194,000          -

Long-term debt (Note 6):
Public Service Company of Colorado:
   First Mortgage Bonds
    6-3/4% retired July 1, 1998......................              -     25,000
    6% due January 1, 2001...........................        102,667    102,667
    6% due April 15, 2003............................        250,000          -
    8-1/8% due March 1, 2004.........................        100,000    100,000
    Pollution Control Series A and B, 5-7/8% due
      March 1, 2004 .................................         21,500     22,000
    6-3/8% due November 1, 2005......................        134,500    134,500
    7-1/8% due June 1, 2006..........................        125,000    125,000
    Pollution Control Series G, 5-5/8%
      due April 1, 2008 .............................         18,000     18,000
    Pollution Control Series F, 7-3/8% 
      due November 1, 2009 ..........................         27,250     27,250
    Pollution Control Series G, 5-1/2% 
      due June 1, 2012. .............................         50,000     50,000
    Pollution Control Series G, 5-7/8% 
      due April 1, 2014 .............................         61,500     61,500
    9-7/8% due July 1, 2020..........................         75,000     75,000
    8-3/4% due March 1, 2022.........................        150,000    150,000
    7-1/4% due January 1, 2024.......................        110,000    110,000
   Secured Medium-Term Notes, Series A and B, 
     6.02% - 9.25%, due March 4, 1998 - March 5, 2007        296,500    423,500
   Unamortized premium...............................              -          4
   Unamortized discount..............................         (4,616)    (4,670)
   Capital lease obligations, 6.68% -11.21% due in 
     installments through May 31, 2025 ..............         39,555     44,392
                                                              ------     ------
                                                          $1,556,856 $1,464,143
                                                          ---------- ----------
         The accompanying notes to consolidated financial statements are
                 an integral part of these financial statements.

                                       59
<PAGE>

                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
              CONSOLIDATED STATEMENTS OF CAPTALIZATION (continued)
                (Thousands of Dollars, Except Share Information)
                           December 31, 1998 and 1997


                                                               1998      1997 
                                                               ----      ---- 
Long-term debt (continued)

PS Colorado Credit Corporation, Inc.:
   Unsecured Medium-Term Notes, Series A,
    5.86% - 6.14%, due October 13, 1998 - May 30, 2000      $100,000   $100,000

1480 Welton, Inc.:
   13.25% secured promissory note, due in installments
   through October 1, 2016 ...........................        30,755     31,155
                                                              ------     ------
                                                           1,687,611  1,595,298
Less:  maturities due within one year.................        44,481    257,160
                                                              ------    -------
    Total long-term debt..............................     1,643,130  1,338,138
                                                           ---------  ---------

Total capitalization..................................    $3,464,462 $3,142,934
                                                          ========== ==========




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

                                       60
<PAGE>



                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                             (Thousands of Dollars)
                  Years ended December 31, 1998, 1997 and 1996



                                                  1998       1997        1996
                                                  ----       ----        ----

Operating revenues:
   Electric.................................  $1,635,573  $1,485,196 $1,488,990
   Gas......................................     640,064     733,091    640,497
   Other....................................       8,449      11,356      7,951
                                                 -------      ------      -----
                                               2,284,086   2,229,643  2,137,438

Operating expenses:
   Fuel used in generation..................     212,184      198,706   195,442
   Purchased power..........................     589,637      493,902   490,428
   Gas purchased for resale.................     380,554      467,745   393,163
   Other operating and maintenance expenses.     403,292      391,177   400,008
   Depreciation and amortization............     180,913      168,451   154,631
   Taxes (other than income taxes) .........      83,994       81,496    82,899
   Income taxes (Note 13) ..................     101,494       90,813    96,331
                                                 -------      -------   -------
                                               1,952,068    1,892,290 1,812,902
                                               ---------    --------- ---------
Operating income............................     332,018      337,353   324,536

Other income and deductions:
   Merger expenses..........................         418      (18,661)  (11,210)
   Equity in earnings of Yorkshire 
     Power (Note 2) ........................       3,446       34,926         -
   Miscellaneous income and deductions -
      net (Note 15) ........................       2,535      (13,374)  (13,260)
                                                   -----      -------   -------
                                                   6,399        2,891   (24,470)

Interest charges:
   Interest on long-term debt...............     120,082      118,438    95,826
   Other interest...........................      20,849       24,117    17,238
   Allowance for borrowed funds used during
     construction ..........................     (12,328)      (6,353)   (3,344)
   Dividends on PSCo obligated mandatorily
     redeemable  preferred securities of
     subsidiary trust holding solely
     subordinated debentures of PSCo (Note 5)      9,711            -         -
                                                   -----        -----      ----
                                                 138,314      136,202   109,720
                                                 -------      -------   -------

Income before extraordinary item............     200,103      204,042   190,346
Extraordinary item - U.K. windfall tax (Note 2)        -     (110,565)        -
                                                   -----     --------   -------
Net income...................................    200,103       93,477   190,346
Dividend requirements and redemption premium
 on preferred stock .........................      5,332       11,752    11,848
                                                   -----       ------    ------
Earnings available for common stock.........    $194,771      $81,725  $178,498
                                                ========      =======  ========


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

                                       61
<PAGE>


                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                 CONSOLIDATED STATEMENTS OF SHAREHOLDER'S EQUITY
                (Thousands of Dollars, Except Share Information)
                  Years ended December 31, 1998, 1997 and 1996

<TABLE>
<CAPTION>
                                                                                     Accumulated
                                                                                        Other
                              Common Stock, $1 par value       Paid       Retained   Comprehensive
                                   Shares         Amount     in Capital   Earnings      Income        Total 
                                   ------         ------     ----------   --------      ------        ----- 

<S>                              <C>              <C>        <C>          <C>         <C>           <C>

Balance at January 1, 1996       63,358,128     $316,791     $680,315       $346,539   $       -    $ 1,343,645
Net income/Comprehensive income           -            -            -        190,346           -        190,346
Dividends declared:
  Common stock........                    -            -            -       (135,111)          -       (135,111)
  Preferred stock, $100 par value         -            -            -         (8,889)          -         (8,889)
  Preferred stock $25 par value           -            -            -         (2,940)          -         (2,940)
Issuance of common stock:
  Employees' Savings Plan           274,934        1,374        8,420              -           -          9,794
  Dividend Reinvestment Plan        809,603        4,048       24,580              -           -         28,628
  Management Incentive Plan          58,346          292        1,427              -           -          1,719
  Acquisitions (Note 4)             317,748        1,589        9,611              -           -         11,200
Other.................                    -            -            -           (104)          -           (104)
                                    -------       ------        -----         ------     -------         ------

Balance at December 31, 1996     64,818,759      324,094      724,353        389,841           -      1,438,288
Comprehensive income:
  Net income..........                    -            -            -         93,477           -         93,477
  Foreign currency translation
    adjustment                            -            -            -              -       4,142          4,142
                                                                                                          -----
    Comprehensive income (Note 1)                                                                        97,619
Dividends declared:
  Common stock, prior to
    August 1, 1997 Merger                 -            -            -        (76,202)          -       (76,202)
  Common stock, to NCE                    -            -            -        (76,093)          -       (76,093)   
  Preferred stock, $100 par value         -            -            -         (8,803)                   (8,803)
  Preferred stock, $25 par value          -            -            -         (2,940)                   (2,940)
Issuance of common stock:
  Employees' Savings Plan           250,058         1,250       8,518              -           -         9,768
  Dividend Reinvestment Plan        488,224         2,441      16,899              -           -        19,340
  Management Incentive Plan          40,404           202         993              -           -         1,195
Merger with SPS:
  Exchange of common stock for
    NCE stock.........          (65,597,345)     (327,987)    327,987              -           -             -
  Dividend of subsidiaries'
    stock to NCE............              -             -     (49,912)             -           -       (49,912)
Contribution of capital by 
    NCE (Note 4)                          -             -     273,300              -           -       273,300
Other.................                    -             -         (19)             -           -           (19)
                                     ------        ------        ----        -------     -------          ----

Balance at December 31, 1997            100             -   1,302,119        319,280       4,142     1,625,541
Comprehensive income:
  Net income..........                    -             -           -        200,103           -       200,103
  Foreign currency translation
    adjustment                            -             -           -              -       5,260         5,260
  Sale of NCI to NC Enterprises           -                                               (9,402)       (9,402)
                                                                                                        ------
      Comprehensive income (Note 1)                                                                    195,961
Dividends declared
  Common stock, to NCE                    -             -           -       (188,845)          -      (188,845)
  Preferred stock, $100 par value         -             -           -         (4,166)          -        (4,166)
  Preferred stock, $25 par value          -             -           -         (1,166)          -        (1,166)
  Other...............                    -             -           -              7           -             7
                                    -------        ------     -------         ------     -------         -----

Balance at December 31, 1998            100       $     -  $1,302,119      $ 325,213     $     -    $1,627,332    
                                        ===       =======  ==========      =========     =======    ==========
</TABLE>


(1)Authorized  shares of common stock were 100 at December 31, 1998 and 1997 and
160  million  at  December  31,  1996.  Common  stock,  par value was $5 through
September 18, 1997.  Effective  September 19, 1997,  common stock, par value was
changed to $0.01.
         The accompanying notes to consolidated financial statements are
                 an integral part of these financial statements.

                                       62
<PAGE>

                       PUBLIC SERVICE COMPANY OF COLORADO
                                AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (Thousands of Dollars)
                  Years ended December 31, 1998, 1997 and 1996


                                                     1998       1997     1996
                                                    -----       ----     ----
Operating activities:
   Net income...................................    $200,103  $ 93,477 $190,346
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Extraordinary item - U.K. windfall tax
      (Note 2) .................................           -   110,565        -
     Depreciation and amortization..............     186,620   173,047  159,400
     Amortization of investment tax credits.....      (4,896)   (5,219)  (7,256)
     Deferred income taxes......................       7,092    37,390   60,899
     Equity in earnings of Yorkshire Power......      (3,446)  (34,926)       -
     Allowance for equity funds used during
      construction .............................           -         6     (757)
     Change in accounts receivable..............      21,540   (15,378) (88,680)
     Change in inventories......................      (6,553)   (2,163)  20,542
     Change in other current assets.............       7,937   (52,914) (31,169)
     Change in accounts payable.................       9,148    (5,413)  88,473
     Change in other current liabilities........      22,957   (15,870) (36,615)
     Change in deferred amounts.................     (18,289)  (21,913) (19,550)
     Change in noncurrent liabilities...........        (995)    3,367   (9,779)
     Other......................................           -      (144)   1,760
                                                     -------   -------  -------
       Net cash provided by operating activities     421,218   263,912  327,614

Investing activities:
   Construction expenditures....................    (504,727) (352,273)(321,162)
   Allowance for equity funds used during
     construction ..............................           -        (6)     757
   Proceeds from disposition of property, plant 
     and equipment .............................       9,102     3,187   20,454
   Investment in Yorkshire Power (Note 2).......           -  (362,342)       -
   Payment received on note receivable from NC 
     Enterprises (Note 2) ......................     100,000         -        -
   Payment for purchase of companies, net of 
     cash acquired (Note 3) ....................           -         -    3,649
   Transfer of subsidiaries to NCE (Note 1).....           -    (2,229)       -
   Purchase of other investments................      (1,345)  (19,224) (11,485)
   Sale of other investments....................       4,101    11,162      664
                                                     -------   -------  -------
       Net cash used in investing activities....    (392,869) (721,725)(307,123)

Financing activities:
   Proceeds from sale of common stock (Note 4)..           -    20,517   30,115
   Contribution of capital by NCE...............           -   273,300        -
Proceeds from sale of PSCo obligated mandatorily
   redeemable preferred securities (Note 5).....     187,700         -        -
   Proceeds from sale of long-term debt (Note 6)     247,025   412,220  217,415
   Redemption of long-term debt.................    (157,737) (205,550) (83,356)
   Short-term borrowings - net..................      66,195   127,530  (43,325)
   Redemption of preferred stock................    (181,824)     (665)  (1,376)
   Dividends on common stock (Notes 4 and 15)...    (180,430) (148,279)(133,394)
   Dividends and redemption premium on preferred
     stock .....................................      (8,261)  (11,757) (11,857)
                                                      ------   -------  ------- 

       Net cash (used in) provided by financing
        activities .............................     (27,332)  467,316  (25,778)
                                                     -------   -------  -------

       Net increase (decrease) in cash and 
         temporary cash investments ............       1,017     9,503   (5,287)
       Cash and temporary cash investments at
         beginning of year .....................      18,909     9,406   14,693
                                                      ------     -----   ------
       Cash and temporary cash investments at
           end of year .........................     $19,926   $18,909  $ 9,406
                                                     =======   =======  =======



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



                                       63

<PAGE>


Item 7.  Management's  Discussion  and  Analysis of  Financial  Condition  and
Results of Operations (SPS)

      The following  narrative  analysis  discusses  SPS's results of operations
comparing the years ending  December 31, 1998,  December 31, 1997 and the fiscal
year ending  August 31,  1996.  SPS merged with PSCo  effective  August 1, 1997.
Effective with the Merger, Quixx and UE, previously  wholly-owned  subsidiaries,
were transferred  through the sale by SPS of all of the outstanding common stock
of such  subsidiaries  at net book value,  to NC  Enterprises,  an  intermediate
holding company of NCE. The 1997 statements of income and cash flows reflect the
results of operations of Quixx and UE through July 31, 1997.

      SPS  changed  its fiscal  year in early  1997 and then filed a  Transition
Report on Form 10-K for the  period  September  1, 1996 to  December  31,  1996.
Additional  information has been presented where  meaningful,  however,  certain
information  has  been  omitted  pursuant  to  General   Instructions   I(2)(a).
Discussion  related to  Commitments  and  Contingencies  is covered within NCE's
Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations. See FORWARD LOOKING INFORMATION.

Earnings Available for Common Stock

      Earnings available for common stock were $115.0 million, $75.6 million and
$103.3 million during 1998,  1997 and 1996,  respectively.  The increase in 1998
earnings  was  primarily  due to higher  electric  sales,  lower  operation  and
maintenance  expenses,  the recognition of merger and business integration costs
during 1997 and the  write-off of Quixx's and UE's  investments  in the Carolina
Energy  Project  in  1997.  1997  earnings  were  negatively   impacted  by  the
recognition of merger and business  integration  costs, the write-off of Quixx's
and UE's  investments in the Carolina Energy Project in 1997 and the recognition
of a $11.7  million  gain on the sale of certain  water  rights by Quixx in 1996
(see Note 3.  Acquisitions  and  Divestitures  Item 8. FINANCIAL  STATEMENTS AND
SUPPLEMENTARY DATA).

      The $9.4 million  decrease in earnings  during the Transition  Period,  as
compared to the same period in 1995,  was  primarily due to the write-off of the
BCH project in December 1996 (see Note 3.  Acquisitions and Divestitures in Item
8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

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 annual change in electric
operating revenues and energy costs as compared to the preceding fiscal year (in
thousands):

                                    Increase (Decrease) From Prior Year
                                         1998       1997
                                         ----       ----
Electric operating revenues:
 Retail...........................     $21,513    $50,743
 Wholesale........................      15,350     14,382
 Other (including unbilled revenues)   (46,031)    (4,167)
                                       -------     ------
  Total revenues..................      (9,168)    60,958
Fuel used in generation...........     (40,972)    56,076
Purchased power...................       8,654     (3,509)
                                       -------    -------
  Net increase in electric margin.     $23,150    $ 8,391
                                       =======    =======

                                       64
<PAGE>


  The following table compares electric Kwh sales by major customer classes.

                             Millions of Kwh Sales % Change From Prior Year
                                1998     1997          1998     1997
                                ----     ----          ----     ----
Residential ..............     3,169    2,987           6.1%     4.1%
Commercial  ..............     3,051    2,990           2.0      3.6
Industrial  ..............     8,367    8,135           2.9      4.1
Public Authority .........       630      583           8.1      2.1
                              ------    -----
  Total Retail............    15,217   14,695           3.6      3.9
Wholesale.................     8,075    7,004          15.3      3.8
                              ------   -----
Total.....................    23,292   21,699           7.3      3.9
                              ======   ======

      Electric  operating  revenues decreased $9.2 million or 1.0% in 1998, when
compared to 1997, primarily due to lower deferred fuel revenues  attributable to
the pass through to customers of lower fuel costs,  the  recognition  in 1997 of
revenues associated with the anticipated  recovery of the Thunder Basin judgment
and rate  reductions  for  guaranteed  Merger  savings,  $5.8  million  in 1998,
compared to $1.5 million in 1997.  This decrease was offset,  in part, by higher
electric  sales due to the hotter  weather  during the summer of 1998 and a 1.4%
increase in customer  growth and  additional  revenues  of  approximately  $16.9
million  recorded in connection  with the  settlement of the 1985 FERC rate case
(See  Note  9.   Regulatory   Matters  in  Item  8.  FINANCIAL   STATEMENTS  AND
SUPPLEMENTARY DATA.).

      Electric  operating revenues increased $61.0 million or 6.8% in 1997, when
compared to 1996,  primarily due to the pass through to customers of higher fuel
costs and costs related to the Texas jurisdictional portion of the Thunder Basin
judgment, a portion of which were recorded as an operating expense and increased
electric sales. Under the various state regulatory approvals, SPS is required to
provide credits to retail customers over five years for one-half of the measured
non-fuel  operation and maintenance  expense savings  associated with the Merger
case (See Note 9. Regulatory Matters, Merger Related Rate Reductions, in Item 8.
FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.).

      Fuel used in generation  expense  decreased $41.0 million or 8.7% in 1998,
when  compared to 1997,  primarily  due to lower  prices of coal and natural gas
offset,  in part, by increased  generation  levels  required to serve retail and
wholesale  customers.  The  decrease  in coal  costs  was  primarily  due to the
expiration of a coal supply contract in 1997 and negotiation with a new supplier
in 1998 and lower transportation costs. The cost of natural gas increased due to
generation at the new Cunningham  Station  combustion turbine unit. Fuel used in
generation  expense  increased  $56.1 million or 13.4% in 1997, when compared to
the prior year,  primarily  due to  increased  generation  levels at SPS's power
plants and higher  prices of natural gas as SPS purchased  approximately  40% of
its gas supply requirements on the spot market during 1997.

      Purchased  power  increased $8.7 million during 1998, when compared to the
same period in 1997,  primarily  due to an increase in spot market prices and an
increase in demand  requirements  resulting from increased  wholesale and retail
sales.  Purchased  power  decreased $3.5 million in 1997, when compared to 1996,
primarily  due to the  increased  availability  and  efficiency  of SPS's  power
plants. 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 purchases  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 in 1998 and 1997, when compared to the
respective preceding year, had little impact on net income. The recovery of fuel
and purchase power costs is discussed  further in Note 9. Regulatory  Matters in
Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.


                                       65
<PAGE>


Other Operating Revenues

      Other operating revenues decreased $18.9 million in 1998 and $13.5 million
in 1997,  when  compared to the prior year,  due to the August 1, 1997,  sale of
Quixx and UE, as discussed above.  Other operating revenues in 1997 include only
seven months of Quixx and UE operations as compared to twelve months in 1996.

Non-Fuel Operating Expenses

      Other operating and maintenance  expenses  decreased $28.1 million in 1998
as compared to 1997.  Excluding the seven months of expenses  recognized in 1997
for UE and Quixx and the $12.1  million  Thunder  basin costs  judgement  costs,
other operating and maintenance  expenses decreased $2.4 million.  This decrease
is primarily due to lower  maintenance  costs at the Company's  power plants and
employee benefit costs. Other operating and maintenance  expenses increased $1.6
million in 1997 as compared to 1996.  This increase was due to the Thunder Basin
judgment  costs,  discussed  above,  offset in part, by lower labor and employee
benefit costs attributable to staffing  reductions in connection with the Merger
and SPS's cost containment efforts.

      Depreciation  and  amortization  expense  increased  $8.3  million in 1998
primarily due to $7.6 million of  additional  depreciation  expense  recorded in
1998, in connection with the settlements related to the 1985 wholesale rate case
and the  depreciation  of  property  additions.  Depreciation  and  amortization
expense  increased  $0.6 million in 1997  primarily due to the  depreciation  of
property additions.

      Income taxes  increased  $16.9 million in 1998 and decreased $16.5 million
in 1997,  as  compared to the prior  year,  primarily  due to changes in pre-tax
income.  Income tax expense for 1997 and 1996 include the effects of recognizing
certain merger and executive severance costs as non-deductible.

Other Income and Deductions

      Other income and deductions  increased  $34.2 million in 1998, as compared
to 1997,  primarily due to the 1997 write-off of the investments in the Carolina
Energy Project  (which totaled  approximately  $16.1  million),  the absences of
merger and business integration expenses in 1998 and lower income and deductions
attributable  to Quixx and UE.  Higher  interest  income was  recognized in 1998
related to the note receivable from NC Enterprises for the sale of Quixx and UE.
Other income and deductions  decreased $31.9 million in 1997, as compared to the
prior year, primarily due to the write-off of investments in the Carolina Energy
Project by Quixx and UE, the  recognition  of the $11.7 million gain on the sale
of  certain  water  rights  by Quixx  in 1996 and  higher  merger  and  business
integration  expenses  (see Note 3.  Acquisitions  and  Divestitures  in Item 8.
FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA).

      Other income and  deductions  decreased  $15.4  million in the  Transition
Period in 1996,  as compared to the same  period in 1995,  primarily  due to the
December   1996   write-off  of  Quixx's   investment  in  the  BCH  Project  of
approximately $15.5 million.

Interest Charges

      Interest  charges  increased  $1.2 million in 1998 primarily due to higher
interest  costs on  short-term  debt used for  general  corporate  requirements.
Interest  charges  increased  $6.5 million in 1997  primarily due to interest on
borrowings used to finance capital expenditures.  In October 1996,  Southwestern
Public  Service  Capital I, a wholly owned  trust,  issued $100 million of 7.85%
Trust  Preferred  Securities,  Series A, due September 1, 2036.  The expense for
these securities is shown as Dividends on SPS obligated  mandatorily  redeemable
preferred securities of subsidiary trust holding solely subordinated  debentures
of SPS. The funds from this financing were used to reduce short-term debt.


                                       66
<PAGE>


Liquidity and Capital Resources

Prospective Capital Requirements

      The estimated cost as of December 31, 1998, of the  construction  programs
of SPS and other  capital  requirements  for the years  1999,  2000 and 2001 are
shown in the table below (in millions):

                                             1999        2000      2001 
                                           -------      ------    ------
Electric
    Production..........................   $    46      $   17    $    3
    Transmission........................        29          62        69
    Distribution........................        32          56        44
General.................................        12           4         4
                                           -------      ------    ------
      Total construction expenditures...       119         139       120
Less: AFDC..............................         7           8         8
Add: Sinking funds and debt maturities 
   and refinancings ...................         90           -         - 
                                                --          --       ---
Total capital requirements..............   $   202      $  131    $  112
                                           =======      ======    ======

      The  construction  programs  of SPS are subject to  continuing  review and
modification.  In particular, actual construction expenditures may vary from the
estimates  due to changes in the electric  system  projected  load  growth,  the
desired  reserve  margin and the  availability  of purchased  power,  as well as
alternative  plans for meeting SPS's long-term energy needs. In addition,  SPS's
ongoing evaluation of asset acquisition and divestiture opportunities to support
corporate  strategies  and  future  requirements  to  install  emission  control
equipment may impact actual capital  requirements (see Note 10.  Commitments and
Contingencies  -  Environmental  Issues  in Item  8.  FINANCIAL  STATEMENTS  AND
SUPPLEMENTARY DATA).

Capital Sources

      At  December  31,  1998,   SPS  estimates   that  its  1999-2001   capital
requirements,  as summarized above, and the payment of common stock dividends to
NCE will be met with a combination of funds from external sources and funds from
operations.  SPS may meet its  external  capital  requirements  through  capital
contributions  by NCE,  the  issuance  of secured  or  unsecured  long-term  and
short-term  debt,  and the sale of other  securities.  The  financing  needs are
subject to  continuing  review and can change  depending  on market and business
conditions and changes,  if any, in the construction  programs and other capital
requirements of SPS.


                                       67
<PAGE>


Item 8. Financial Statements and Supplementary Data (SPS)

                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO SOUTHWESTERN PUBLIC SERVICE COMPANY:

We have audited the accompanying balance sheets and statements of capitalization
of Southwestern Public Service Company (a New Mexico corporation) as of December
31, 1998 and 1997, and the related  statements of income,  shareholder's  equity
and cash flows for each of the two years in the period ended  December 31, 1998.
These  financial   statements  and  the  schedule  referred  to  below  are  the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial statements and schedule based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the financial  position of Southwestern  Public Service
Company as of December 31, 1998 and 1997,  and the results of its operations and
its cash flows for each of the two years in the period ended  December 31, 1998,
in conformity with generally accepted accounting principles.

Our  audits  were  made for the  purpose  of  forming  an  opinion  on the basic
financial  statements  taken as a whole.  The  schedule  listed  in the index of
financial  statements is presented for purposes of complying with the Securities
and  Exchange  Commission's  rules  and  is not  part  of  the  basic  financial
statements.  This schedule has been subjected to the auditing procedures applied
in our audits of the basic  financial  statements  and, in our  opinion,  fairly
states in all material  respects  the  financial  data  required to be set forth
therein in relation to the basic financial statements taken as a whole.


                                                        ARTHUR ANDERSEN LLP
Denver, Colorado
February 23, 1999

                                       68
<PAGE>



                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

Southwestern Public Service Company:

We have audited the consolidated statements of income,  shareholder's equity and
cash flows for the four months ended December 31, 1996 and the year ended August
31,  1996  of  Southwestern  Public  Service  Company  and  subsidiaries.  These
financial  statements are the  responsibility of the Company's  management.  Our
responsibility  is  to  express  an  opinion  on  these  consolidated  financial
statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.

In our opinion,  such consolidated  financial  statements present fairly, in all
material  respects,  the results of  operations  and cash flows of  Southwestern
Public  Service  Company  and  subsidiaries  for the above  stated  periods,  in
conformity with generally accepted accounting principles.


                                               DELOITTE & TOUCHE LLP
Dallas, Texas
February 28, 1997
(June 19, 1997, as to the Carolina Energy
 Limited Partnership in Note 3)


                                       69
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                                 BALANCE SHEETS
                             (Thousands of Dollars)
                           December 31, 1998 and 1997

                                     ASSETS

                                                         1998          1997 
                                                         ----          ---- 

Property, plant and equipment, at cost:
   Electric .......................................   $2,665,115     $2,557,579
   Construction in progress........................      121,407        144,452
                                                         -------        -------
                                                       2,786,522      2,702,031
   Less: accumulated depreciation .................    1,057,183        987,487
                                                       ---------        -------
    Total property, plant and equipment............    1,729,339      1,714,544
                                                       ---------      ---------


Investments, at cost:
   Notes receivable from affiliate (Note 4)........      119,036        119,036
   Other...........................................        5,591          5,832
                                                           -----        -------
    Total investments..............................      124,627        124,868
                                                         -------        -------

Current assets:
   Cash and temporary cash investments.............        1,350            986
   Accounts receivable, less reserve for 
     uncollectible accounts ($1,695 at
     December 31, 1998; $2,442 at December 31, 1997)      76,190         96,548
   Accrued unbilled revenues ......................        9,373         15,468
   Recoverable electric energy costs - net.........            -         23,086
   Materials and supplies, at average cost.........       16,970         16,337
   Fuel inventory, at average cost.................        2,293          2,301
   Current portion of accumulated deferred income
      taxes (Note 13) .............................        6,113              -
   Prepaid expenses and other......................        5,248          3,367
                                                           -----        -------
    Total current assets...........................      117,537        158,093
                                                         -------        -------

Deferred charges:
   Regulatory assets (Note 1)......................      111,971        119,244
   Unamortized debt expense .......................        8,767          9,395
   Other...........................................       37,623         62,592
                                                          ------        -------
    Total deferred charges.........................      158,361        191,231
                                                         -------        -------
                                                      $2,129,864     $2,188,736
                                                      ==========     ==========



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

                                       70
<PAGE>

                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                                 BALANCE SHEETS
                             (Thousands of Dollars)
                           December 31, 1998 and 1997

                             CAPITAL AND LIABILITIES

                                                         1998          1997 
                                                         ----          ---- 


Common stock.......................................   $  348,402     $  348,402
Retained earnings..................................      389,818        349,988
                                                         -------        -------
    Total common equity............................      738,220        698,390

SPS obligated mandatorily redeemable preferred 
 securities of subsidiary trust holding solely
 subordinated debentures of SPS (Note 5) ..........      100,000        100,000
Long-term debt (Note 6)............................      530,618        620,598
                                                         -------        -------
                                                       1,368,838      1,418,988
                                                       ---------      ---------

Noncurrent liabilities:
   Employees' postretirement benefits other than 
     pensions (Note 12) ...........................        5,941          3,800
   Employees' postemployment benefits (Note 12)....        3,571          2,446
                                                           -----          -----
    Total noncurrent liabilities...................        9,512          6,246
                                                           -----          -----

Current liabilities:
   Notes payable and commercial paper (Note 7).....       85,162        154,244
   Notes payable to affiliates (Note 7)............        9,000         25,160
   Long-term debt due within one year..............       90,113            173
   Accounts payable................................       64,275        107,465
   Dividends payable...............................       20,007         22,546
   Recovered electric energy costs - net...........       18,760              -
   Customers' deposits.............................        5,904          5,471
   Accrued taxes...................................       37,646         28,051
   Accrued interest................................       12,273         12,715
   Current portion of accumulated deferred income
      taxes (Note 13) .............................            -         10,740
   Other...........................................       18,011         14,658
                                                          ------        -------
    Total current liabilities......................      361,151        381,223
                                                         -------        -------

Deferred credits:
   Unamortized investment tax credits .............        5,219          5,469
   Accumulated deferred income taxes (Note 13).....      380,655        372,447
   Other...........................................        4,489          4,363
                                                           -----        -------
    Total deferred credits.........................      390,363        382,279
                                                         -------        -------

Commitments and contingencies (Notes 9 and 10).....   ----------     ----------
                                                      $2,129,864     $2,188,736
                                                      ==========     ==========



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

                                       71
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                          STATEMENTS OF CAPITALIZATION
              (Thousands of Dollars, Except Per Share Information)
                           December 31, 1998 and 1997


                                                               1998      1997 
                                                               ----      ---- 

Common shareholder's equity:
   Common stock, $1 par value, authorized 200 shares 
     in 1998 and in 1997, outstanding 100 shares in
     1998 and in 1997........ ........................       $      -  $      -
   Paid in capital....................................        348,402   348,402
   Retained earnings..................................        389,818   349,988
                                                              -------   -------
    Total common shareholder's equity.................        738,220   698,390
                                                              -------   -------

Preferred stock (Note 4):
   $1 par value, 10 million shares authorized; no
    shares outstanding ...............................              -         -
                                                              -------   -------

SPS obligated mandatorily redeemable preferred securities
 of subsidiary trust holding solely subordinated 
 debentures of SPS, 4 million shares outstanding,
 7.85% (Note 5) ......................................        100,000   100,000
                                                              -------   -------
Long-term debt (Note 6):
First Mortgage Bonds:
   6-7/8% due December 1, 1999........................         90,000    90,000
   7-1/4% due July 15, 2004...........................        135,000   135,000
   6-1/2% due March 1, 2006...........................         60,000    60,000
   8-1/4% due July 15, 2022...........................         40,000    40,000
   8-1/5% due December 1, 2022........................        100,000   100,000
   8-1/2% due February 15, 2025.......................         70,000    70,000
Pollution control obligations, securing pollution 
   control revenue bonds:
   Not collateralized by First Mortgage Bonds:
    variable rate (4.30% at December 31, 1998 and 1997)
    due July 1, 2011 .................................         44,500    44,500
    variable rate (6.435% effective December 31, 1998
    and 1997) due July 1, 2016 .......................         25,000    25,000
    5-3/4% series, due September 1, 2016..............         57,300    57,300
   Less: funds held by Trustee........................           (168)     (161)
Other.................................................            112       286
Unamortized discount and premium-net..................         (1,013)   (1,154)
                                                              -------   -------
                                                              620,731   620,771
Less: maturities due within one year..................         90,113       173
                                                              -------   -------
    Total long-term debt..............................        530,618   620,598
                                                              -------   -------

Total capitalization..................................     $1,368,838 $1,418,988
                                                           ========== ==========


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


                                       72
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                              STATEMENTS OF INCOME
                             (Thousands of Dollars)
        Years ended December 31, 1998, 1997 and August 31, 1996 (Note 1)



                                                      1998     1997      1996 
                                                    -------   -------  -------

Operating revenues:
   Electric.....................................    $951,187  $960,355 $899,397
   Other........................................           -    18,928   32,403
                                                     -------   -------  -------
                                                     951,187   979,283  931,800

Operating expenses:
   Fuel used in generation......................     432,127   473,099  417,023
   Purchased power..............................      23,155    14,501   18,010
   Other operating & maintenance expenses.......     138,679   166,761  165,129
   Depreciation and amortization................      78,592    70,331   69,781
   Taxes (other than income taxes) .............      47,259    46,515   45,518
   Income taxes (Note 13) ......................      65,696    48,795   65,297
                                                     -------   -------  -------
                                                     785,508   820,002  780,758
                                                     -------   -------  -------
Operating income................................     165,679   159,281  151,042

Other income and deductions:
   Merger expenses..............................      (1,208)  (15,427)  (7,878)
   Write-off of investment in Carolina Energy
     Project (Note 3) ..........................           -   (16,052)       -
   Miscellaneous income and deductions - net
     (Notes 3 and 15) ..........................       8,819     4,877   13,226
                                                       -----     -----   ------
                                                       7,611   (26,602)   5,348

Interest charges:
   Interest on long-term debt...................      46,471    46,356   47,045
   Other interest...............................       8,925     7,444    6,088
   Allowance for borrowed funds used during 
     construction ..............................      (4,943)   (4,546)  (2,516)
   Dividends on SPS obligated  mandatorily
    redeemable  preferred  securities of
    subsidiary trust holding solely subordinated
    debentures of SPS ..........................       7,850     7,850        -
                                                       -----     -----   ------
                                                      58,303    57,104   50,617
                                                     -------   -------  -------

Net income......................................     114,987    75,575  105,773
Dividend requirements on preferred stock........           -         -    2,494
                                                     -------   -------  -------
Earnings available for common stock.............    $114,987   $75,575 $103,279
                                                    ========   ======= ========


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

                                       73
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                              STATEMENTS OF INCOME
                             (Thousands of Dollars)
          For the four months ended December 31, 1996 and 1995 (Note 1)



                                                           1996          1995
                                                           ----          ----
                                                                     (Unaudited)
Operating revenues:
   Electric..........................................    $295,579      $267,427
   Other.............................................      10,701        11,055
                                                         --------       -------
                                                          306,280       278,482

Operating expenses:
   Fuel used in generation...........................     141,896       119,081
   Purchased power...................................       4,900         2,756
   Other operating & maintenance expenses............      55,582        52,134
   Depreciation and amortization.....................      23,782        23,329
   Taxes (other than income taxes)...................      15,152        14,590
   Income taxes (Note 13)............................      10,987        18,963
                                                         --------       -------
                                                          252,299       230,853
                                                          -------       -------
Operating income.....................................      53,981        47,629

Other income and deductions, net:
   Merger expenses...................................      (2,019)       (2,171)
   Write-off of investment in BCH project (Note 3)...     (15,546)            -
   Miscellaneous income and deductions - net.........         759           737
                                                         --------       -------
                                                          (16,806)       (1,434)
Interest charges:
   Interest on long-term debt........................      16,302        15,106
   Other interest....................................       1,102           950
   Allowance for borrowed funds used during 
     construction ...................................        (892)         (807)
   Dividends on SPS obligated mandatorily redeemable
     preferred securities of subsidiary trust holding
     solely subordinated debentures of SPS ..........       1,526             -
                                                            -----          ----
                                                           18,038        15,249
                                                           ------        ------

Net income...........................................      19,137        30,946
Dividend requirements on preferred stock.............           -         2,373
                                                         --------       -------
Earnings available for common stock..................    $ 19,137      $ 28,573
                                                         ========      ========




                 The accompanying notes to financial statements
               are an integral part of these financial statements
                                       74
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                       STATEMENTS OF SHAREHOLDER'S EQUITY
              (Thousands of Dollars, Except Share Information)
   Year ended December 31, 1998, 1997, four months ended December 31, 1996 and
                       year ended August 31, 1996 (Note 1)

<TABLE>
<CAPTION>

                               Common Stock, $1 par value                         Retained
                               Shares        Amount          Paid in Capital      Earnings      Total
                               ------        ------          ---------------      --------      -----

<S>                           <C>            <C>                <C>               <C>          <C> 
Balance at August 31, 1995..  40,917,908     40,918             306,376           373,458      720,752
Net income..................           -          -                   -           105,773      105,773
Retirements of cumulative
 preferred stock ...........           -          -               1,108              (921)         187
Dividends declared
  Common stock..............           -          -                   -           (90,020)     (90,020)
  Cumulative preferred stock           -          -                   -            (1,573)      (1,573)
                                --------     ------             -------            ------      -------

Balance at August 31, 1996..  40,917,908     40,918             307,484           386,717      735,119
Net income .................           -          -                   -            19,137       19,137
Dividends declared on 
 common stock ..............           -          -                   -           (22,504)     (22,504)
                                  ------    -------              ------           -------      -------

Balance at December 31, 1996  40,917,908     40,918             307,484           383,350      731,752
Net income..................           -          -                   -            75,575       75,575
Dividends declared
  Common stock, prior to 
   August 1, 1997 Merger ...           -          -                   -           (63,845)     (63,845)
  Common stock, to NCE......           -          -                   -           (45,092)     (45,092)
Merger with PSCo
  Exchange of common shares
  for NCE stock ............ (40,917,808)   (40,918)             40,918                 -            -    
                             -----------    -------              ------           -------      -------

Balance at December 31, 1997         100          -             348,402           349,988      698,390
Net income..................           -          -                   -           114,987      114,987
Dividends declared
  Common stock, to NCE......           -          -                   -           (75,157)     (75,157)
                                --------     ------             -------           -------      -------

Balance at December 31, 1998         100   $      -          $  348,402         $ 389,818   $  738,220
                                  ======    =======          ==========         =========   ==========

</TABLE>

Authorized shares of common stock were 200 at December 31, 1998 and 1997 and 100
million at December 31, 1996 and August 31, 1996.

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

                                       75
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                            STATEMENTS OF CASH FLOWS
             (Thousands of Dollars, Except Share Information) Years
           ended December 31, 1998, 1997, and August 31, 1996 (Note 1)


                                                      1998      1997     1996
                                                      ----      -----    ----



Operating activities:
   Net income...................................    $114,987  $ 75,575 $105,773
   Adjustments to reconcile net income to net
    cash provided by operating activities
     (Note 1):
     Depreciation and amortization..............      83,103    76,929   65,448
     Write-off of investment in Carolina Energy
       Project (Note 3).........................           -    16,052        -
     Amortization of investment tax credits.....        (250)     (250)    (250)
     Deferred income taxes......................      (8,600)    3,587   16,423
     Allowance for equity funds used during
      construction .............................           -        (5)     (60)
     Change in accounts receivable..............      20,358   (39,842)  (4,697)
     Change in inventories......................        (625)      301      134
     Change in other current assets.............      27,300    (3,061)  (7,688)
     Change in accounts payable.................     (43,190)   45,683   10,024
     Change in other current liabilities........      31,699   (10,000)  (7,271)
     Change in deferred amounts.................      30,309   (48,934) (11,381)
     Other......................................       3,358       276   13,571
                                                     -------   -------  -------
       Net cash provided by operating activities     258,449   116,311  180,026

Investing activities:
   Construction expenditures....................     (92,218) (118,550)(111,986)
   Allowance for equity funds used during
     construction ..............................           -         5       60
   Cost of disposition of property, plant and
     equipment .................................      (2,897)   (2,371)       -
   Proceeds from the sale of Quixx and UE, net
     of cash disposed (Note 1) .................           -   (29,567)       -
   Purchase of other investments................        (673)   (4,639)  (1,768)
   Sale of other investments....................         820         -        -
   Acquisition of TNP properties (Note 3).......           -         -  (29,200)
                                                     -------   -------  -------
       Net cash used in investing activities....     (94,968) (155,122)(142,894)

Financing activities:
   Proceeds from sale of long-term debt.........           -         -   60,000
   Redemption of long-term debt.................        (179)  (14,986)  (4,445)
   Short-term borrowings - net..................     (85,242)  100,564   69,624
   Retirement of preferred stock................           -         -  (75,434)
   Dividends on common stock (Notes 4 and 15)...     (77,696)  (86,391) (90,020)
   Dividends on preferred stock.................           -         -   (2,494)
                                                     -------   -------  -------
       Net cash used in financing activities....    (163,117)     (813) (42,769)
                                                    --------   -------  -------
       Net increase (decrease) in cash and 
          temporary cash investments ...........         364   (39,624)  (5,637)
       Cash and temporary cash investments at
          beginning of year ....................         986    40,610   36,860
                                                         ---    ------   ------
       Cash and temporary cash investments at
          end of year                                $ 1,350   $   986  $31,223
                                                     =======   =======  =======



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

                                       76
<PAGE>


                       SOUTHWESTERN PUBLIC SERVICE COMPANY
                            STATEMENTS OF CASH FLOWS
                             (Thousands of Dollars)
              Four months ended December 31, 1996 and 1995 (Note 1)


                                                               1996     1995   
                                                               ----     ----
                                                                     (Unaudited)

Operating activities:
   Net income.........................................        $19,137   $30,946
   Adjustments to reconcile net income to net
    cash provided by operating activities (Note 1):
     Depreciation and amortization....................         22,289    21,873
     Write-off of investment in BCH Project (Note 3)..         15,546         -
     Deferred income taxes and  investment tax credits          4,806     3,166
     Allowance for equity funds used during construction         (179)      (60)
     Change in accounts receivable....................         10,180     9,402
     Change in inventories............................          1,417       928
     Change in other current assets...................         (5,674)    9,977
     Change in accounts payable.......................            628   (10,673)
     Change in other current liabilities..............        (12,487)  (11,021)
     Other............................................        (14,674)    7,627
                                                              -------   -------
       Net cash provided by operating activities......         40,989    62,165

Investing activities:
   Construction expenditures..........................        (66,031)  (44,950)
   Purchase of other investments......................         (2,297)   (3,741)
   Acquisition of TNP properties (Note 3).............              -   (29,200)
                                                              -------   -------
       Net cash used in investing activities..........        (68,328)  (77,891)

Financing activities:
   Proceeds from sale of long-term notes and bonds (Note 6)    82,300         -
   Proceeds from sale of SPS obligated mandatorily 
    redeemable preferred securities of subsidiary trust
    holding solely subordinated debentures of SPS             100,000         -
   Retirement of long-term notes and bonds............        (84,776)   (1,717)
   Short-term borrowings - net........................        (15,788)  116,250
   Retirement of preferred stock......................              -   (74,672)
   Dividends on common stock..........................        (45,010)  (45,010)
   Dividends on preferred stock.......................              -    (2,373)
                                                              -------   -------
       Net cash provided by (used in) financing activities     36,726    (7,522)
                                                               ------    ------ 
       Net increase (decrease) in cash and temporary
          cash investments ...........................          9,387   (23,248)
       Cash and temporary cash investments at beginning
          of period ..................................         31,223    36,860
                                                               ------    ------
       Cash and temporary cash investments at end of period   $40,610   $13,612
                                                              =======   =======


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

                                       77

<PAGE>



                  NEW CENTURY ENERGIES, INC. AND SUBSIDIARIES

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               December 31, 1998

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

Business, Utility Operations and Regulation

      NCE is a registered  holding company under 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 Statement of Financial  Accounting  Standards
("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.  The Company 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 have a material
adverse  effect on  NCE's,  PSCo's  and 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):

1998                                        NCE           PSCo            SPS 
                                          ------         ------         ------

Income taxes (Note 13)..............      $148,499      $ 69,868       $79,116
Nuclear decommissioning costs.......        69,490        69,490             -
Employees' postretirement benefits
  other than pensions (Note 12).....        57,350        54,461         2,889
Employees' postemployment benefit
 (Note 12) .........................        24,888        24,416             -
Demand-side management costs........        37,160        31,984         5,176
Unamortized debt reacquisition costs        33,138        15,769        16,808
Early retirement costs..............         1,000             -         1,000
Thunder Basin judgment (Note 9).....           548             -           548
Other...............................         9,559         3,124         6,434
                                            ------        ------        ------
  Total.............................      $381,632      $269,112      $111,971
                                          ========      ========      ========


                                       78
<PAGE>


           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

1997                                        NCE           PSCo            SPS 
                                          ------         ------         ------

Income taxes (Note 13)..............      $162,985      $ 84,356       $ 79,161
Nuclear decommissioning costs.......        76,881        76,881              -
Employees' postretirement benefits
  other than pensions (Note 12).....        63,023        59,995          3,028
Employees' postemployment benefits
 (Note 12) .........................        24,455        23,932              -
Demand-side management costs........        42,503        38,518          3,985
Unamortized debt reacquisition costs        36,717        17,791         18,344
Early retirement costs..............         8,008         6,645          1,363
Thunder Basin judgment (Note 9).....         5,912             -          5,912
Other...............................         9,991         2,540          7,451
                                            ------        ------         ------
  Total.............................      $430,475      $310,658       $119,244
                                          ========      ========       ========

      The regulatory  assets of the Company's  regulated  subsidiaries  that are
currently  being  recovered  as of December  31, 1998 and 1997 are  reflected in
rates charged to customers  over periods  ranging from two to thirty years.  The
recovery of  regulatory  assets over the next five years is  estimated to exceed
$200  million.  Refer  to the  discussion  below or the  Notes  to  Consolidated
Financial  Statements  as  identified  in the above  table  for a more  detailed
discussion regarding recovery periods.

      Effective  July 1, 1993,  PSCo began  collecting  from customers the costs
approved by the CPUC for the decommissioning of Fort St. Vrain. This recoverable
amount  totaled  approximately  $124.4 million (plus a 9% carrying  cost).  Such
amount,  which is being  collected over a twelve-year  period,  represented  the
inflation-adjusted  estimated  remaining cost of decommissioning  activities not
previously  recognized  as  expense  at the  time  of  CPUC  approval.  PSCo  is
recovering  approximately  $13.9 million per year from its customers,  including
carrying costs.

      On January  27,  1997,  the CPUC  issued its order on PSCo's 1996 gas rate
case. The CPUC allowed  recovery of  postemployment  benefit costs 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 (see Note 12. Employee
Benefits -  Postemployment  Benefits).  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  the   postemployment   benefits  cost  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 9. Regulatory Matters).

      Certain  costs  associated  with  PSCo's DSM  programs  are  deferred  and
recovered in rates over five to seven-year periods through the DSMCA.  Non-labor
incremental  expenses,  carrying  costs  associated  with deferred DSM costs and
incentives  associated  with  approved DSM  programs are  recovered on an annual
basis.  Costs  associated with SPS's DSM programs are also deferred and, as part
of a negotiated  settlement  agreement reached in July 1995, will be included in
rate base and cost of service in future PUCT proceedings.

      Costs  incurred to reacquire  debt prior to scheduled  maturity  dates are
deferred  and  amortized  over  the  life of the  debt  issued  to  finance  the
reacquisition, or as approved by the applicable regulatory authority.


                                       79
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      Recovered/Recoverable Purchased Gas and Electric Energy Costs -Net

      The Company's  utility  subsidiaries  have adjustment  mechanisms in place
which currently  provide for the recovery of certain  purchased gas and electric
energy costs.  These cost adjustment  tariffs may increase or decrease the level
of  costs  recovered  through  base  rates  and  are  revised  periodically,  as
prescribed by the appropriate  regulatory  agencies,  for any difference between
the total amount collected under the clauses and the recoverable  costs incurred
(see Note 9. Regulatory Matters).

      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,  non-regulated energy services, including gas and power
marketing,  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 regulation in the countries
in which such  investments  are made (see Note 2.  Investment in Yorkshire Power
and U.K.  Windfall  Tax).  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.

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
income from its unconsolidated investments accounted for under the equity method
of accounting.  All intercompany  items and  transactions  have been eliminated.
Certain  prior year  amounts  have been  reclassified  to conform to the current
year's presentation.

      Effective August 1, 1997,  following the receipt of all required state and
Federal  regulatory  approvals,  PSCo and SPS  merged in a  tax-free  "merger of
equals"   transaction  and  became   wholly-owned   subsidiaries  of  NCE.  Each
outstanding share of PSCo common stock was canceled and converted into the right
to receive  one share of NCE common  stock,  and each  outstanding  share of SPS
common stock was canceled  and  converted  into the right to receive 0.95 of one
share of NCE  common  stock.  The  Merger  was  accounted  for as a  pooling  of
interests.   Effective  with  the  Merger,   certain   utility  and  non-utility
subsidiaries were transferred within NCE's common controlled  subsidiaries.  The
common stock of Quixx and UE, former SPS subsidiaries,  were transferred through
the sale by SPS of the  common  stock of such  subsidiaries  at net book  value,
aggregating  approximately  $119.0  million,  to NC  Enterprises in exchange for
notes payable of NC Enterprises.  Subsidiaries  of PSCo (Cheyenne,  WGI, e prime
and  Natural  Fuels)  were  transferred  by a  declaration  of a dividend of the
subsidiaries' stock, at net book value, aggregating approximately $49.9 million,
to NCE. NCE subsequently made a capital  contribution of the e prime and Natural
Fuels common stock, at net book value, aggregating  approximately $29.5 million,
to NC Enterprises.

      On April 22, 1997, SPS changed its fiscal year from a twelve-month  period
ending  August  31 to  twelve-month  period  ending  December  31.  SPS  filed a
Transition  report on Form 10-K for the period September 1, to December 31, 1996
("Transition  Period"). The fiscal year periods presented in SPS's statements of
income and cash flows are for the  twelve-months  ending  December  31, 1998 and
1997 and August 31, 1996.


                                       80
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Revenue Recognition

      The Company's utility  subsidiaries accrue for estimated unbilled revenues
for services  provided  after the meters were last read on a cycle billing basis
through the end of each year.

Risk Management

      The Company and its  subsidiaries  have  initiated  the  utilization  of a
variety of energy  contracts,  both financial and commodity based, in the energy
trading and energy non-trading  operations to reduce their exposure to commodity
price risk.  These  contracts  consist mainly of commodity  futures and options,
index or fixed price swaps and basis swaps.

      Energy contracts entered into for the trading operations are accounted for
using the mark-to-market method of accounting.  Under mark-to-market accounting,
natural gas and power trading  contracts,  including both physical  transactions
and  financial  instruments,  are  recorded at fair value and  recognized  as an
increase  or  decrease  to  purchased  power or cost of gas sold  upon  contract
execution.  Changes in the market value of the portfolio are recognized as gains
or losses in the period of change and the resulting  unrealized gains and losses
are  recorded  as  other  current  assets  and  liabilities.  Such  amounts  are
recognized  as net  positions  in the  consolidated  balance  sheets  and income
statements as NCE and its subsidiaries  have master netting  agreements in place
with counterparties.

      Energy  contracts are also  utilized in the Company and its  subsidiaries'
non-trading  operations  to reduce  commodity  price risk.  Hedge  accounting is
applied only if the  contract  reduces the price risk of the  underlying  hedged
item and is designated as a hedge at its inception.  Gains and losses related to
qualifying  hedges of firm commitments or anticipated  transactions are deferred
and  recognized  as a  component  of  purchased  power or cost of gas sold  when
settlement occurs. If, subsequent to being hedged,  underlying  transactions are
no longer likely to occur, the related gains and losses are recognized currently
in income  (see Note 8.  Financial  Instruments  - Risk  Management  for further
discussion of the Company's risk management activities).

Comprehensive Income

      The  Company  and  its  subsidiaries  adopted  SFAS  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.  Other comprehensive income for NCE and PSCo was reported
in the consolidated  Statements of Shareholders'  Equity and consists of foreign
currency translation adjustments related to the investment in Yorkshire Power.

Basic and Diluted Earnings Per Share

      Effective in calendar year 1997,  the FASB issued SFAS No. 128,  "Earnings
per Share" ("SFAS 128") requiring presentation of basic and diluted earnings per
share. Basic earnings per share is based upon the weighted average common shares
outstanding  during the year.  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 each year.  Employee  stock options are the  Company's  only
common stock equivalents. There are no other potentially dilutive securities.

                                       81
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)


                                            For the year ended December 31, 1998
                                             Income       Shares      Per Share
                                          (Numerator) (Denominator)    Amount
                                          ----------  ------------    ------
                                                   (in thousands)
Basic EPS
  Net income................................    $341,957     111,859     $ 3.06
                                                                         ======

Effect of Dilutive Securities:
  Common stock options......................          -          149
                                                -------      -------

Diluted EPS
  Net income and assumed conversion.........    $341,957     112,008     $ 3.05
                                                ========     =======     ======

      SFAS 128 had no effect on the Company's 1997 and 1996 reported  earnings
per share information.

      Approximately  780,000 common stock options were outstanding  during 1998,
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.

Income Taxes

      The  Company  and  its   subsidiaries   file   consolidated   Federal  and
consolidated  and separate state income tax returns.  Income taxes are allocated
to the subsidiaries based on separate company  computations of taxable income or
loss. Investment tax credits have been deferred and are being amortized over the
service lives of the related property.  Deferred taxes are provided on temporary
differences  between  the  financial  accounting  and tax  bases of  assets  and
liabilities  using the tax rates which are in effect at the  balance  sheet date
(see Note 13. Income Taxes).

Stock-based Compensation

      The Company uses the intrinsic  value based method of accounting for its
stock-based  compensation  plan (see Note 12.  Employee  Benefits -  Incentive
Compensation).

Temporary Cash Investments and Statements of Cash Flows

      For purposes of the consolidated statements of cash flows, the Company and
its subsidiaries consider all temporary cash investments to be cash equivalents.
These temporary cash  investments are securities  having original  maturities of
three  months or less or having  longer  maturities  but with put dates of three
months or less.  At  December  31,  1998,  approximately  $14.3  million of cash
balances are  restricted  for  operational  uses as they have been committed for
investments in cogeneration projects.

      Income  Taxes and  Interest  (Excluding  Amounts  Capitalized)  Paid (in
thousands):

NCE                                              1998        1997        1996 
                                               -------     -------     -------

Income taxes ...............................   $135,776    $ 99,938   $117,121
Interest....................................   $249,405    $230,507   $197,073


PSCo                                             1998        1997        1996 
                                               -------     -------     -------

Income taxes, including amounts paid to NCE    $114,340   $ 75,439    $ 66,871
Interest....................................   $188,443   $172,470    $144,533

                                       82
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

SPS                                              1998        1997        1996 
                                               -------     -------     -------

Income taxes, including amounts paid to NCE     $69,111     $37,752    $50,250
Interest....................................    $55,739     $56,486    $52,540

      Non-cash Transactions:

      Shares of NCE's common  stock in 1998 and PSCo's  common stock in 1997 and
1996  (222,387  in 1998,  250,058 in 1997 and  274,934  in 1996),  valued at the
market price on date of issuance (approximately $10 million for each year), were
issued to a savings  plan of the Company.  The  estimated  issuance  values were
recognized in other operating expenses during the respective preceding years.

      Effective March 31, 1998, PSCo sold its common stock  investment in NCI to
NC  Enterprises,  an NCE  subsidiary.  PSCo received as  consideration a 20-year
promissory  note  from NC  Enterprises  in the  amount of  approximately  $292.6
million (see Note 2. Investment in Yorkshire Power and U.K. Windfall Tax).

      Stock issuances and the dividend of subsidiaries' stock in connection with
the Merger discussed above were non-cash financing and investing  activities and
are not reflected in the consolidated statements of cash flows.

      During 1996, PSCo exchanged  shares of its common stock in connection with
the acquisition of TOG and TOP (see Note 3. Acquisitions and Divestitures).

Property and Depreciation

      Property, plant and equipment is stated at original cost. Replacements and
capital   improvements,   representing  units  of  property,   are  capitalized.
Maintenance  and  repairs of  property  and  replacements  of items of  property
determined  to be less than a unit of  property  are  charged to  operations  as
maintenance expense.  The cost of units of property retired,  together with cost
of removal, less salvage, is charged to accumulated depreciation.

      Depreciation  expense, for financial  accounting purposes,  is computed on
the  straight-line  basis  based on the  estimated  service  lives  and costs of
removal of the various classes of property. Depreciation expense, expressed as a
percentage of average  depreciable  property,  for NCE, PSCo and SPS ranged from
approximately  2.7%-2.9% for the years ended  December 31, 1998,  1997 and 1996.
For income tax  purposes,  the  Company  and its  subsidiaries  use  accelerated
depreciation and other elections provided by the tax laws.

Allowance for Funds Used During Construction

      AFDC,  as  defined  in the  system  of  accounts  prescribed  by the FERC,
represents the net cost during the period of construction of borrowed funds used
for  construction  purposes  and a reasonable  rate on funds  derived from other
sources. AFDC does not represent current cash earnings.  The Company's regulated
subsidiaries capitalize AFDC as a part of the cost of utility plant.

Gas in Underground Storage (NCE and PSCo)

      Gas in underground  storage is accounted for under the last-in,  first-out
("LIFO")  cost method.  The  estimated  replacement  cost of gas in  underground
storage at December 31, 1998 and 1997,  exceeded the LIFO cost by  approximately
$13.0 million and $36.0 million, respectively.


                                       83
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Cash Surrender Value of Life Insurance Policies (NCE and PSCo)

      The  following  amounts  related  to COLI  contracts,  issued by one major
insurance company,  are recorded as a component of Investments,  at cost, on the
consolidated balance sheets (in thousands):

                                                             1998        1997 
                                                             ----        ---- 

Cash surrender value of contracts.....................      $461,752    $408,425
Borrowings against contracts..........................       458,104     405,285
                                                             -------     -------
   Net investment in life insurance contracts.........      $  3,648    $  3,140
                                                            ========    ========

      Refer to Note 10. "Commitments and Contingencies", for discussion of
certain tax matters.

Management Estimates

      The  preparation  of financial  statements,  in conformity  with generally
accepted  accounting  principles,  requires  management  to make  estimates  and
assumptions  that affect the reported  amounts of assets and liabilities and the
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting period. Actual results could differ from those estimates.

2.  Investment in Yorkshire Power and U.K. Windfall Tax (NCE and PSCo)

Acquisition

      During  the second  quarter  of 1997,  Yorkshire  Power,  a joint  venture
initially  equally  owned  by  PSCo  and  AEP,  acquired  indirectly  all of the
outstanding   ordinary  shares  of  Yorkshire   Electricity,   a  U.K.  regional
electricity  company.  NCI accounts for its investment in Yorkshire  Power using
the equity  method.  Yorkshire  Power's  results of  operations  include 100% of
Yorkshire  Electricity's results since the April 1, 1997 acquisition date. NCI's
equity in earnings of Yorkshire Power is 50%, the same as its ownership share.

      Effective March 31, 1998, PSCo sold its common stock  investment in NCI to
NC Enterprises, an 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.  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%. 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. In October 1998, NCE contributed $100 million to NC Enterprises, which was
used to reduce the principle balance of the promissory note to PSCo.

U.K. Windfall Tax

      In July  1997,  the U.K.  government  enacted a  windfall  tax on  certain
privatized  business  entities,  payable in two  installments  with the first in
December  1997  and  the  second  in  December  1998.  The  windfall  tax  was a
retroactive  adjustment to the privatization  value based on  post-privatization
profits  during  the 1992 to 1995  period.  During  the third  quarter  of 1997,
Yorkshire Power recorded an extraordinary  charge of approximately  $221 million
(135 million pounds sterling) for this windfall tax. The Company's share of this
tax was approximately $110.6 million.


                                       84
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Investment in Ionica

      During the second  quarter of 1998,  Yorkshire  Power  recognized  a $54.7
million   after-tax   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
facilities had been  unsuccessful.  In November of 1998,  Ionica was placed into
receivership  and an  administrator  was appointed to oversee its operations and
distribute its remaining  assets.  Due to the complexity of Ionica operations it
may take  considerable  time to complete  this  process.  Yorkshire  Electricity
continues  to assess  the  recoverability  of the  remaining  book value of this
investment (approximately $7 million at December 31, 1998).

Generation Sale

      In the fourth quarter of 1998,  Yorkshire Power recognized a $42.1 million
after-tax gain on the sale of its generation  assets.  This included the sale of
its 75% interest in Regional Power Generators,  Ltd., which owned a 272-megawatt
combined cycle, gas fired plant located in North  Lincolnshire,  England and the
sale of other generation capacity. Proceeds from these sales were used to reduce
the debt of Yorkshire Power. Yorkshire Electricity is focusing its main business
on the distribution and supply of electricity and the supply of natural gas.

      Summarized  income  statement  information for the year ended December 31,
1998 and from the date of  acquisition,  April 1, 1997 to December 31, 1997,  is
presented below (in millions):

                                                   1998            1997 
                                            ------------------   -------
                                              Year     3 Months
                                              Ended      Ended     (NCE
                                           December 31, March 31,   and
                                              (NCE)       (PSCo)   PSCo)    
                                              -----       ------   -----    

    Yorkshire Power:
      Operating revenues...............     $2,281.7  $  663.2   $1,492.9
                                            --------  --------   --------

      Operating income.................        324.9      65.5      202.3
                                            --------  --------   --------

      Income before extraordinary item.         76.9       6.9       69.8
                                            --------  --------   --------

      Extraordinary item - U.K.
        windfall tax                               -         -     (221.1)
                                            --------    ------     ------

      Net income (loss)................     $   76.9  $    6.9   $ (151.3)
                                            ========  ========   ========

    NCI's equity in earnings (losses):
      Equity in earnings of Yorkshire 
        Power                               $   38.5  $    3.5   $   34.9
      Extraordinary item - U.K.
        windfall tax                               -        -      (110.6)
                                               -----      ----     ------

                                            $   38.5  $    3.5   $  (75.7)
                                            ========  ========   ========


                                       85
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      NCI's  investment  in  Yorkshire  Power at December  31, 1998 and 1997 was
approximately  $333 million and $290 million,  respectively.  Summarized balance
sheet  information  for  Yorkshire  Power as of December  31, 1998 and 1997,  is
presented below (in millions):

                                                    1998     1997 
    Assets:
      Property, plant and equipment............    $1,602   $1,645
      Current assets...........................       552      602
      Goodwill (net)...........................     1,547    1,602
      Other assets.............................       295      293
                                                   ------   ------
                                                   $3,996   $4,142
                                                   ======   ======
    Capitalization and Liabilities:
      Common shareholders' equity..............    $  655   $  542
      Long-term debt...........................     2,121      704
      Other non-current liabilities............       413      489
      Current liabilities......................       807    2,407
                                                   ------   ------
                                                   $3,996   $4,142
                                                   ======   ======

      The  unaudited pro forma  financial  information  presented  below for NCE
assumes  that  Yorkshire  Power was  acquired on January 1, 1997.  The pro forma
adjustments include recognition of equity in the estimated earnings of Yorkshire
Power, an adjustment for interest expense on debt associated with the investment
in Yorkshire Power and related income taxes. The estimated earnings of Yorkshire
Power were based on historical earnings of Yorkshire  Electricity,  prior to its
acquisition by Yorkshire Power,  adjusted for the estimated  effects of purchase
accounting (including the amortization of goodwill), conversion to United States
generally  accepted  accounting  principles,  interest expense on debt issued by
Yorkshire Power associated with the acquisition and related income taxes.  Sales
of electricity are affected by seasonal  weather  patterns and,  therefore,  the
results of Yorkshire Power/Yorkshire  Electricity will not be distributed evenly
during the year. Equity in earnings of Yorkshire Power has been converted at the
average  exchange  rates for the year ended  December  31, 1997 and December 31,
1996, of $1.639/pound and $1.561/pound, respectively.

      Based on the  above  assumptions,  shown  below  is  unaudited  pro  forma
financial  information  for the  years  ended  December  31,  1997  and 1996 (in
millions, except per share amounts):

                                                      NCE Earnings         
                                             Available for
                                             common stock     EPS-Basic (1)  
                                              1997   1996     1997    1996
                                              ----   ----     ----    ----

Net income before extraordinary item...      $261.5 $272.3    $2.50   $2.64
                                                              =====   =====

Pro forma adjustments:

  Equity in earnings of
   Yorkshire Power, net of
   U.S. tax benefits (2)...............      (10.1)   19.3

  Interest expense, net of tax.........       (3.5)  (13.8)
                                             -----  ------

Pro forma result.......................      $247.9 $ 277.8   $2.37   $2.70
                                             ====== =======   =====   =====

  (1) Based on the weighted average number of common shares  outstanding for the
      period.
  (2) The years ending December 31, 1997 and 1996 amounts  include $24.0 million
     and  $18.9   million   ($17.9   million  and  $11.7   million   after-tax),
     respectively,  of write-offs related to certain computer development costs,
     acquisition   expenses  and  costs   incurred  for  the   preparation   for
     deregulation.


                                       86

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

      The unaudited pro forma  financial  information  presented  below for PSCo
assumes that NCI was sold to NC Enterprises  effective  January 1, 1997. NCI was
formed  in  connection  with  the  investment  in  Yorkshire  Power  and  had no
operations  during the first  three  months of 1997.  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  years  ended  December  31,  1998  and 1997 (in
millions):

                                                               PSCo Earnings
                                                              1998    1997
                                                              ----    ----

Net income before extraordinary item.....................    $200.1  $204.0

Pro forma adjustments:

  NCI's net income before extraordinary item.............      (2.8)  (35.9)
  Interest income from promissory note, net of tax.......       3.2     9.5
                                                              -----   -----

Pro forma result.........................................    $200.5  $177.6
                                                             ======  ======

3. Acquisition and Divestiture of Investments

Acquisition of Planergy (NCE)

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

Carolina Energy Limited Partnership Investment (NCE and SPS)

      The Carolina Energy Partnership, a waste-to-energy  cogeneration facility,
was  originally  scheduled to be completed  in 1997,  but was halted  pending an
independent analysis of the project's  engineering and financial viability.  The
banks  providing  debt  financing to the project  withheld  funds for  continued
construction.   Quixx,  UE,  other  equity  owners,  senior  creditors  and  the
construction  contractor  were  unable to  restructure  the  project on mutually
agreeable  terms and the senior  creditors took  possession of the assets of the
facility.  In June 1997, Quixx wrote-off its investment of  approximately  $13.6
million in the Carolina Energy Partnership.  Additionally,  UE wrote-off its net
investment of approximately $2.4 million in this same partnership. Quixx holds a
one-third ownership interest,  including a 1% general partnership  interest,  in
the  partnership.  UE's net  investment  in the  partnership  was  comprised  of
subordinated  debt,  the  related  interest  receivable,  as well  as  fees  for
engineering services.

BCH Energy Limited Partnership Investment (NCE and SPS)

      Quixx  holds a 49%  limited  partnership  interest  in BCH Energy  Limited
Partnership  which owned a  waste-to-energy  cogeneration  facility located near
Fayetteville,  North Carolina.  Limited commercial  operation of the BCH project
began  in June  1996;  however,  the  facility  did  not  achieve  the  expected
performance  level. An effort was made to restructure the project but it was not
possible to achieve the required  improvements on economically  viable terms. In
late 1996,  senior  creditors took possession of the assets of the facility.  In
December 1996,  Quixx wrote-off its investment of  approximately  $16 million in
this project.


                                       87
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Quixx Underground Water Rights (NCE and SPS)

      During  1996,  Quixx sold a portion of its  underground  water  rights for
approximately  $14 million.  Quixx  recognized an after-tax  gain on the sale of
these water  rights of  approximately  $11.7  million,  which is  reflected,  in
Miscellaneous income and deductions - net for the year ended December 31, 1996.

Acquisition  of Texas-Ohio  Gas, Inc. and Texas-Ohio  Pipeline,  Inc. (NCE and
PSCo)

      Effective September 1, 1996, e prime acquired all of the outstanding stock
of TOG and TOP in exchange for a  combination  of common stock of PSCo and cash.
Such  acquisitions were 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.  These companies are primarily engaged in gas brokering
and marketing activities and interstate gas transmission and are subsidiaries of
e prime.

Acquisition of TNP Properties (SPS)

      In September  1995,  SPS purchased  properties of TNP located in the Texas
Panhandle  area for  $29.2  million.  The  purchase  added  approximately  8,000
customers and was accounted for using the purchase method. Cost recovery of this
amount was allowed by the PUCT through a rate surcharge over a ten-year period.

4. Capital Stock (NCE, PSCo and SPS)

Shareholder Rights

      On April 30, 1997, the Board of Directors  declared that a dividend of one
right  for each  Common  Share  be paid on the  effective  date of the  business
combination  among the Company,  PSCo and SPS to  shareholders  of record of the
common shares issued and  outstanding at the close of business on the day before
the effective date of the business combination.  Each right represents the right
to  purchase  one  one-hundredth  of a share of  Series  A Junior  Participating
Preferred Stock at a price of $100 per one  one-hundredth  share.  Additionally,
the Board of Directors created a Series A Junior Participating  Preferred Stock,
$1 par value,  and reserved 2.6 million shares for issuance upon exercise of the
Rights.  In the event any person or group  acquires 10% or more of the Company's
common stock,  the holders of the rights  generally will be entitled to receive,
upon exercise, common stock of the Company having a value equal to two times the
exercise  price of the right.  In addition,  the Board of Directors  may, at its
option  after a person or group  acquires  10% or more of the  Company's  common
stock,  exchange  all or part of the rights for shares of the  Company's  common
stock.  In the event that the Company is acquired in a merger or other  business
combination  or 50% or more of the Company's  assets or earning power is sold or
transferred, the holders of the rights have the right to receive, upon exercise,
common  stock of the  acquiring  company  having a value  equal to two times the
exercise  price of the right.  The  Company  may redeem the rights at a price of
$0.001  per  right at any time  prior to the tenth  day  following  the date any
person or group acquires 10% or more of the Company's  common stock.  The rights
expire 10 years after the record date,  unless earlier  redeemed or exchanged by
the Company.

Common Stock Issuances

      In November 1998,  NCE issued 2.5 million shares of common stock.  The net
proceeds  totaling $117.0 million were used for general  corporate  purposes and
the  retirement of short-term  debt.  In December  1997,  NCE issued 5.9 million
shares of common  stock,  resulting in net proceeds  (after  deducting  issuance
costs)  totaling  approximately  $251.4  million.  The proceeds from the sale of
stock  were  used  for  general  corporate  purposes,  including  retirement  of
short-term  debt and a capital  contribution to PSCo. PSCo used such proceeds to
retire short-term debt.

                                       88
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Preferred Stock of NCE

      NCE has 20 million shares of preferred stock  authorized.  At December 31,
1998, the Company has not issued any of the preferred stock.

Preferred Stock of Subsidiaries
                                          December 31, 1998    December 31, 1997
                                        Shares       Amount  Shares     Amount
                                        ------       ------  ------     ------ 
                                               (in thousands)     (in thousands)
PSCo cumulative preferred stock,
 $100 par value, 3 million shares
  authorized:
  Issued and outstanding:
   Not subject to mandatory 
     redemption (1):
     4.20% series...................           -         -    100,000  $ 10,000
     41/4% series (includes $7,500
      premium) .....................           -         -    174,997    17,507
     41/2% series...................           -         -     65,000     6,500
     4.64% series...................           -         -    159,950    15,995
     4.90% series...................           -         -    150,000    15,000
     4.90% 2nd series...............           -         -    150,000    15,000
     7.15% series...................           -         -    250,000    25,000
                                          ------   -------    -------   -------
     Total..........................           -         -  1,049,947  $105,002
                                          ======   ======= ==========  ========

   Subject to mandatory redemption (2):
     7.50% series ..................           -         -    216,000  $ 21,600
     8.40% series...................           -         -    202,294    20,229
                                          ------   -------    -------   -------
                                               -         -    418,294    41,829
   Less: Preferred stock subject to
     mandatory redemption within 
     one year.......................           -         -    (25,760)   (2,576)
                                          ------   -------    -------   -------
       Total........................           -         -    392,534  $ 39,253
                                          ======   =======    =======  ========
PSCo cumulative preferred stock,
 $25 par value, 4 million shares
 authorized:
  Issued and outstanding:
  Not subject to mandatory redemption (1):
     8.40% series...................           -         -  1,400,000  $ 35,000
                                          ======   =======  =========  ========

PSCo cumulative preferred stock,
 $0.01 par value,
  10 million shares authorized with
   no shares outstanding (3) .......           -         -          -  $      -
                                           =====      ====      =====  ========

SPS cumulative preferred stock, $1
 par value,
  10 million shares authorized with
   no shares outstanding (4) ........          -         -          -  $      -
                                            ====      ====       ====  ========

(1) On June 10, 1998, PSCo redeemed all of the preferred stock,  $100 par value,
at a value of $101 per share plus  accrued  dividends  and all of the  preferred
stock, $25 par value, at a value of $25.25 per share plus accrued dividends.

(2) On June 10, 1998, PSCo redeemed all  outstanding  shares of the 7.50% series
subject to mandatory redemption for $101.50 per share plus accrued dividends and
all of the 8.40% series  subject to mandatory  redemption  for $101.75 per share
plus accrued  dividends.  In 1997,  PSCo  repurchased  6,598 shares of the 8.40%
cumulative  preferred  series  subject to mandatory  redemption.  In 1996,  PSCo
repurchased  13,760 shares of the 8.40%  cumulative  preferred series subject to
mandatory redemption.

(3) On July 10,  1998,  the  shareholders  of PSCo  approved an amendment to the
Restated Articles of Incorporation to replace the existing authorized  preferred
stock and to provide for a class of 10 million  authorized  shares of  preferred
stock,  $0.01 par value. This preferred stock may be issued from time to time in
such series and having such designations,  preferences, limitations and relative
rights as the Board of Directors may determine.

(4) On January 31, 1996,  the  shareholders  of SPS approved an amendment to the
Restated Articles of Incorporation to replace the existing authorized  preferred
stock and to provide for a class of 10 million  authorized  shares of  preferred
stock,  $1.00 par value. This preferred stock may be issued from time to time in
such series and having such designations,  preferences, limitations and relative
rights as the Board of Directors may determine.


                                       89
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

5. 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.


                                       90
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

6. Long-Term Debt of Subsidiaries (NCE, PSCo and SPS)
                                                             1998        1997
                                                             ----        ----
                                                              (in thousands)
   First Mortgage Bonds:
     6-3/4% retired July 1, 1998........................   $      -    $ 25,000
     6-7/8% due December 1, 1999........................     90,000      90,000
     6.00% due January 1, 2001..........................    102,667     102,667
     7-7/8% due April 1, 2003...........................      4,000       4,000
     6.00% due April 15, 2003...........................    250,000           -
     8-1/8% due March 1, 2004...........................    100,000     100,000
     5-7/8% due March 1, 2004...........................     21,500      22,000
     7-1/4% due July 15, 2004...........................    135,000     135,000
     6-3/8% due November 1, 2005........................    134,500     134,500
     6-1/2% due March 1, 2006...........................     60,000      60,000
     7-1/8% due June 1, 2006............................    125,000     125,000
     5-5/8% due April 1, 2008...........................     18,000      18,000
     7-3/8% due November 1, 2009........................     27,250      27,250
     5-1/2% due June 1, 2012............................     50,000      50,000
     5-7/8% due April 1, 2014...........................     61,500      61,500
     9-7/8% due July 1, 2020............................     75,000      75,000
     Variable rate (4.05% and 3.80% at December 31, 1998
       and 1997) due September 1, 2021..................      7,000       7,000
     8-3/4% due March 1, 2022...........................    150,000     150,000
     8-1/4% due July 15, 2022...........................     40,000      40,000
     8.20% due December 1, 2022.........................    100,000     100,000
     7-1/4% due January 1, 2024.........................    110,000     110,000
     7.50% due January 1, 2024..........................      8,000       8,000
     8.50% due February 15, 2025........................     70,000      70,000
     Variable rate (4.05% and 3.80% at December 31, 1998
       and 1997) due March 1, 2027......................     10,000      10,000
     Secured Medium-Term Notes, 6.02% - 9.25%, due March
       4, 1998 - March 5, 2007..........................    296,500     423,500
   Other secured long-term debt 13.25%, due in 
     installments through October 1, 2016...............     30,755      31,155
   Pollution control obligations, securing pollution 
     control revenue bonds:
     Not collateralized by First Mortgage Bonds:
       Variable rate (4.30% at December 31, 1998 and 
        1997), due July 1, 2011 ........................     44,500      44,500
       Variable rate (6.435% effective at December 31,
        1998 and 1997), due July 1, 2016................     25,000      25,000
       5-3/4% series, due September 1, 2016.............     57,300      57,300
     Less: funds held by Trustee:.......................       (168)       (161)
   Unsecured Medium-Term Notes:
       5.86% - 6.14% due October 13, 1998 - May 30, 2000    100,000     100,000
   Capital lease obligations, 4.21% - 11.21% due in 
     installments through May 31, 2025..................     39,751      44,747
   Other................................................      6,284         286
   Unamortized discount and premium - net...............     (5,629)     (5,820)
                                                            -------      ------
                                                          2,343,710   2,245,424
Less: maturities due within one year....................    138,165     257,469
                                                            -------     -------
                                                         $2,205,545  $1,987,955
                                                         ==========  ==========

      The First  Mortgage  Bonds include all debt  (including  First  Collateral
Trust Bonds) issued by the Company's utility subsidiaries under various mortgage
indentures.  Substantially all properties of the Company's utility subsidiaries,
other than expressly  excepted  property,  are subject to the liens securing the
First  Mortgage  Bonds.  Additionally,  the SPS  Indenture  provides for certain
restrictions on the payment of dividends by SPS.

      The Red River Authority of Texas has issued certain obligations,  based on
long-term  installment  sale  agreements  executed  by SPS,  that  relate to the
pollution control  facilities  installed at SPS's coal-fueled  generating units.
SPS's payments under the pollution control obligations are pledged to secure the
Red River Authority Pollution Control Revenue Bonds.


                                       91
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      The annual maturities and sinking fund requirements  during the five years
subsequent to December 31, 1998 are (in thousands):

          Year           Maturities     Sinking Fund Requirements       Total
          ----           ----------     -------------------------       -----
NCE       1999             $138,165              $  560              $138,725
          2000              131,721               1,310               133,031
          2001              140,969               1,310               142,279
          2002               16,806               2,810                19,616
          2003              281,848               2,810               284,658

PSCo      1999             $ 44,481              $  500              $ 44,981
          2000              131,656               1,250               132,906
          2001              140,969               1,250               142,219
          2002               16,806               2,750                19,556
          2003              281,848               2,750               284,598

SPS       1999             $ 90,113              $    -              $ 90,113
          2000                    -                   -                     -
          2001                    -                   -                     -
          2002                    -                   -                     -
          2003

      The sinking fund requirements  relate to PSCo and Cheyenne and they expect
to satisfy  substantially  all of their sinking fund  obligations  in accordance
with  the  terms of their  respective  indentures  through  the  application  of
property additions. SPS has no significant sinking fund requirements.

7. Short-term Borrowing Arrangements (NCE, PSCo and SPS)

Notes Payable and Commercial Paper

       Information  regarding  notes payable and commercial  paper for the years
ended  December 31, 1998 and 1997 is as follows (in thousands,  except  interest
rates):

                                                             1998        1997 
NCE
   Notes payable to banks...............................   $ 36,437    $147,500
   Commercial paper.....................................    487,957     440,843
                                                            -------     -------
                                                           $524,394    $588,343
                                                           ========    ========

Weighted average interest rate at year end..............      5.57%       5.74%

PSCo
   Notes payable to banks...............................   $      -    $ 50,000
   Commercial paper.....................................    402,795     286,599
   Note payable to affiliates (by NCI to Quixx).........          -      11,956
                                                            -------     -------
                                                           $402,795    $348,555
                                                           ========    ========

Weighted average interest rate at year end..............      5.72%       5.78%

SPS
   Commercial paper.....................................   $ 85,162    $154,244
   Note payable to affiliates (UE)......................      9,000       9,000
   Note payable to affiliates (Quixx)...................          -      16,160
                                                            -------     -------
                                                           $ 94,162    $179,404
                                                           ========    ========

Weighted average interest rate at year end..............      5.50%       5.60%


                                       92
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Bank Lines of Credit and Compensating Bank Balances

      In August  1997,  NCE entered  into a $225 million  credit  facility  with
several  banks.  Originally,  the credit  facility  provided for $100 million of
direct  borrowings  by NCE  until  the  outstanding  common  stock of  PSCCC,  a
wholly-owned  subsidiary of PSCo, was  transferred to NCE. On June 30, 1998, the
credit facility was amended to eliminate the PSCCC common stock  restriction and
to provide for $200 million of direct  borrowings by NCE. In addition,  Cheyenne
was added as a borrower of up to $25 million  with an NCE  guaranty.  The credit
facility  expires  August 11, 2002.  As of December  31, 1998,  NCE had used $37
million.

      PSCo and its subsidiaries have entered into a credit facility with several
banks  providing  $300  million in  committed  bank lines of credit.  The credit
facility, which is used primarily to support the issuance of commercial paper by
PSCo and PSCCC,  alternatively provides for direct borrowings  thereunder.  1480
Welton,  Inc. and PSRI are provided  access to the credit  facility  with direct
borrowings   guaranteed  by  PSCo.  The  facility  expires  November  17,  2000.
Additionally,  PSCo  has a  credit  facility  which  provides  $150  million  in
committed  lines  of  credit  and  expires  on June 25,  1999.  SPS has a credit
facility  which  provides  $200  million in  committed  bank lines of credit and
expires  February 26, 1999. As of December 31, 1998,  PSCo had used $404 million
and SPS had used $86 million.

      Borrowings permitted under the committed bank lines of credit totaled $705
million at December 31, 1998.  Arrangements by the Company and its  subsidiaries
for committed  lines of credit are  maintained by a combination  of fee payments
and compensating balances.

      PSCo and SPS may borrow under uncommitted preapproved lines of credit upon
request;  however,  the  banks  have no firm  commitment  to  make  such  loans.
Individual PSCo  arrangements  for uncommitted  bank lines of credit totaled $50
million  at  December  31,  1997,  of which  all were  used.  None  were used or
outstanding as of December 31, 1998.

8.  Financial Instruments (NCE, PSCo and SPS)

Fair Value of Financial Instruments

      The following  tables present the carrying  amounts and fair values of the
Company's and subsidiaries'  significant  financial  instruments at December 31,
1998  and  1997.  The  carrying  amount  of  all  other  financial   instruments
approximates  fair  value.  SFAS  No.  107,  "Disclosures  about  Fair  Value of
Financial  Instruments," defines the fair value of a financial instrument as the
amount at which  the  instrument  could be  exchanged  in a current  transaction
between willing parties, other than in a forced or liquidation sale.
<TABLE>
<CAPTION>
                                               1998                  1997     
                                          ----------------     -----------------
                                          Carrying     Fair    Carrying     Fair
                                          Amount       Value   Amount      Value
NCE                                                  (in thousands)
<S>                                    <C>         <C>         <C>         <C>
Investments, at cost.................  $   35,885  $   35,256  $   36,936  $  36,072
Preferred stock of subsidiaries
 subject to mandatory redemption ....           -           -      41,829     42,893
PSCo and SPS obligated mandatorily
 redeemable preferred securities of
 subsidiary trust holding solely
 subordinated debentures of SPS and
 PSCo ...............................     294,000      308,250    100,000    104,752
Long-term debt of subsidiaries.......   2,343,710    2,434,249  2,245,424  2,251,523

PSCo

Investments, at cost.................   $  30,355  $    31,324  $  36,936 $   36,072
Preferred stock subject to mandatory
 redemption .........................           -            -     41,829     42,893
PSCo obligated mandatorily redeemable
 preferred securities of subsidiary
 trust holding solely subordinated
 debentures of PSCo .................     194,000      204,000          -          -
Long-term debt.......................   1,687,611    1,590,226  1,595,298  1,604,160
</TABLE>

                                       93
<PAGE>

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

                                               1998                  1997     
                                          ----------------     ---------------
                                          Carrying     Fair    Carrying   Fair
                                          Amount       Value    Amount    Value
                                          ------       -----    ------    -----
SPS                                                  (in thousands)

Investments, at cost...................   $5,530   $ 3,932     $    -   $    -
SPS obligated mandatorily redeemable 
  preferred securities of subsidiary
  trust holding solely subordinated
  debentures of SPS ...................   100,000  104,250     100,000  104,752
Long-term debt.........................   620,731  661,823     620,771  625,348

      The fair value of the debt and equity securities  included in Investments,
at cost,  is  estimated  based on quoted  market  prices for the same or similar
investments.  The debt  securities  are classified as  held-to-maturity  and the
equity securities are classified as  available-for-sale.  The unrealized holding
gains and losses for these debt and equity securities are not significant.

      The PSCo and SPS obligated mandatorily redeemable preferred securities and
long-term  debt are  based  on  quoted  market  prices  of the  same or  similar
instruments.  Since PSCo, SPS and Cheyenne are subject to regulation,  any gains
or losses  related to the  difference  between the carrying  amount and the fair
value of these  financial  instruments  would not be realized  by the  Company's
shareholders.

      The  fair  value  estimates   presented  herein  are  based  on  pertinent
information available to management as of December 31, 1998 and 1997. These fair
value  estimates  have not been  comprehensively  revalued for purposes of these
financial  statements since that date, and current  estimates of fair values may
differ significantly from the amounts presented herein.

Off-Balance-Sheet Financial Instruments

      NCE has entered in to a  construction  contract  guarantee  which  assures
Quixx's  performance  under  its  engineering,   procurement,  and  construction
contract with Borger Energy Associates,  L.P. ("BEA").  Quixx, which owns 45% of
BEA, is constructing a 230 Mw cogeneration facility at a Phillips Petroleum site
near Borger,  Texas. The maximum  aggregate amount of this guarantee at December
31, 1998 was $88.4 million.  This maximum  amount  decreases to $25.0 million at
commercial  operation of the facility,  currently  estimated in March 1999,  and
remains  in effect  for a period of no longer  than 24 months  before  expiring.
Based upon the current state of construction of the facility,  this guarantee is
not expected to have any financial impact on NCE.

      As of December 31, 1998,  NCE had $59.9 million of guarantees  outstanding
to e prime.  These guarantees were made to facilitate e prime's energy marketing
and trading activities.  Also, e prime, inc. has guaranteed obligations relating
to the sale and  purchase  of energy  and  capacity  for TOG.  These  guarantees
totaled $13.3 million at December 31, 1998.

      In  connection  with an  agreement  for the sale of  electric  power,  SPS
guaranteed  certain  obligations  of a  customer  totaling  $48  million.  These
obligations related to the construction of certain utility property that, in the
event of default by the customer, would revert to SPS.

      NCE and YGSC have  guaranteed 50% of amounts  financed under a $32 million
Credit  Agreement among Young Storage and various lending  institutions  entered
into on June 27, 1995. This debt financing is for the development,  construction
and operation of an  underground  natural gas storage  facility in  northeastern
Colorado. (see Note 3. Acquisitions and Divestitures).

      NC Enterprises has guarantees  totaling $10 million of New Century Cadence
as of December 31, 1998. These guarantees relate to the capital requirements and
operations  of Cadence  Network  LLC,  in which New  Century  Cadence is a 33.3%
partner.

                                       94
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Risk Management

Energy Financial Contracts - Trading

      The  Company  and  its  subsidiaries  use  the  mark-to-market  method  of
accounting  for energy  trading  activities  and  recognized a gain related to e
prime's  power  trading  activities  and a loss related to e prime's gas trading
activities.  These gains and losses were  recognized as part of purchased  power
and gas purchased for resale, respectively,  and totaled less than $500,000. The
following  table  displays  the  mark-to-market  values  of the  energy  trading
financial  instruments of the Company and its  subsidiaries at December 31, 1998
and the average value for the period then ended.

                                       Assets                Liabilities     
                  Net Notional   Average  Dec. 31, 1998  Average  Dec. 31, 1998
                     Amount       Value       Value       Value       Value
                     ------       -----       -----       -----       -----
                                    (in thousands)          (in thousands)
Natural Gas (Mmbtus) 30,000       $ 335       $ 467      $ 344        $ 489
Power (Mwhs)         61,800         149         426        256          795

      In  addition,  PSCo  and SPS did not  hold any  energy  trading  financial
instruments  at  December  31,  1998.  There  were no energy  trading  financial
instruments held by NCE and its subsidiaries at December 31, 1997.

Energy Financial Contracts - Other than Trading

      Various energy financial  instruments are used by NCE and its subsidiaries
as hedging mechanisms against future contractual energy related obligations. The
weighted  average  maturity  of these  instruments  is less  than one  year.  At
December  31,  1998,  the  Company,  as part of e prime's  retail gas  marketing
business,  held notional long volumetric positions of approximately 14.2 million
Mmbtus of natural gas related to these financial  instruments  which had related
unrealized losses of approximately  $6.4 million.  At December 31, 1997, e prime
held notional long volumetric  positions of approximately $5.2 million Mmbtus of
natural gas related to these financial  instruments which had related unrealized
losses of approximately $0.7 million. In addition, PSCo and SPS did not hold any
energy financial instruments at December 31, 1998.

Financial Derivatives - Interest Rates

      SPS has an  interest  rate swap  agreement,  which,  in effect,  fixes the
interest  rate on a $25  million  notional  amount at  6.435%.  Amounts  paid or
received  under this  agreement  are  accrued as interest  rates  change and are
recognized over the life of the agreement as an adjustment to interest  expense.
SPS is  exposed  to  interest  rate  risk  in the  event  of  nonperformance  by
counterparties; however, SPS does not anticipate such nonperformance.

Credit Risk

      In addition to the risks discussed  above,  NCE and its  subsidiaries  are
exposed to credit risk in its risk management activities. Credit risk relates to
the risk of loss resulting  from the  nonperformance  of a  counterparty  of its
contractual  obligations.  As the Company  continues to expand its gas and power
marketing  and trading  activities,  the  Company's  exposure to credit risk and
counterparty  default may increase.  NCE and its  subsidiaries  maintain  credit
policies intended to minimize overall credit risk.

      NCE and its  subsidiaries  conduct  standard  credit review for all of its
counterparties.  The Company employs  additional credit risk control  mechanisms
when  appropriate,   such  as  letters  of  credit,   parental   guarantees  and
standardized master netting agreements that allow for offsetting of positive and
negative  exposures.  The credit exposure is monitored and, when necessary,  the
activity with a specific  counterparty  is limited until credit  enhancement  is
provided.

                                       95
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Concentration of Credit Risk - Accounts Receivable

      No individual customer or group of customers engaged in similar activities
represents  a  material  concentration  of credit  risk to the  Company  and its
subsidiaries.

9. 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  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; and
  -   an Incentive  Cost  Adjustment  ("ICA") which  provides for the sharing of
      energy costs and savings relative to an annual target cost/delivered Kwh.

      The  sharing  of  earnings  in excess of an 11%  return on equity  for the
calendar years 1997-2001 are as follows:
                  Electric Department           Sharing of Excess Earnings
                  Return on Equity             Customers       Shareholders
                  ----------------             ---------       ------------
                       11-12%                     65%              35%
                       12-14%                     50%              50%
                       14-15%                     35%              65%
                      over 15%                   100%               0%

      The QSP  provides  for  bill  credits  if PSCo  does not  achieve  certain
performance measures relating to electric  reliability,  customer complaints and
telephone response to inquiries. For 1997, the QSP provided for up to $3 million
of rewards for its  performance  and PSCo's actual reward totaled  approximately
$1.5  million.  During the third  quarter  of 1998,  PSCo  reached a  settlement
agreement  with  the CPUC  Staff  and the OCC  which  modified  the bill  credit
structure for 1998 electric  reliability and eliminated the reward structure for
the years 1999  through  2001.  Approval of this  modification  was  obtained in
November 1998.

      In April 1998,  PSCo filed with the CPUC its  proposed  Performance  Based
Regulatory Plan adjustment for calendar year 1997. This adjustment  provides the
means for  implementing  the sharing  mechanism  for the  customers'  portion of
earnings over PSCo's  authorized  return on equity threshold  resulting from the
1997  earnings  test,  net of QSP  rewards.  PSCo  recorded  a  customer  refund
obligation of $15.1 million for the 1997 earnings test. In July 1998, PSCo began
refunding a portion of this amount to  customers  through  bill  credits.  As of
December 31, 1998, PSCo recorded an estimated refund obligation of approximately
$8.1 million for the 1998 earnings test.

     Additionally,  a $6 million  annual  electric rate reduction was instituted
October 1, 1996,  followed by an  additional  $12 million  annual  electric rate
reduction  effective with the implementation of new retail gas rates on February
1, 1997.  PSCo  agreed to freeze  base  electric  rates  after the  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.


                                       96
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

PSCo FERC Rate Case

      PSCo filed a rate case with the FERC on December  29,  1995,  requesting a
slight  overall  rate  increase  (less  than  1%) from  its  wholesale  electric
customers.  This filing, among other things,  requested approval for recovery of
OPEB costs under SFAS 106,  postemployment  benefit costs under SFAS 112 and new
depreciation  rates based on the Company's most recent  depreciation  study.  In
March 1997, the FERC issued an order accepting for filing and suspending certain
proposed rate changes.  Settlement  agreements were reached with all parties and
filed with the FERC,  which,  resulted in a slight decrease in rates overall.  A
final order accepting the settlement agreements was received in June 1997.

SPS Merger Related Rate Reductions

      Under the  various  regulatory  commission  approvals,  SPS is required to
provide  credits to  customers  over five  years for  one-half  of the  measured
non-fuel  operation and maintenance  expense savings associated with the 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.  As a result  of  amendments  during  1998 to  contracts
between the coal  supplier  to SPS and the  railroad  company it  employs,  coal
transportation costs are projected to decline  significantly for the period from
November  1998  through  December  2002.  These  savings  will be  passed  on to
customers.

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.  The
Company has also  requested the  prospective  sharing of margins from  wholesale
non-firm sales.  The outcome of this fuel  reconciliation  proceeding is pending
and a hearing has been set for June 1999.

      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 to collect portions
of the Thunder Basin  judgment from  wholesale  customers  from the FERC 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

                                       97
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

fuel costs.  In 1997,  SPS  expensed  approximately  $12.1  million of the Texas
retail  jurisdictional  portion of the Thunder Basin  judgment and recognized an
equal amount as deferred  revenue in anticipation of future recovery through the
pending fuel reconciliation proceeding.

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

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 reaches
$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.   Previously,   New  Mexico's   retail
jurisdictional  electric  rates applied a monthly fuel factor.  In January 1999,
SPS  implemented  new annual fixed fuel cost  recovery  factors to reflect lower
fuel costs primarily as a result of the aforementioned  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 rate reduction 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 of 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 connection with these  settlements,  SPS recorded $16.9 million of additional
revenues and $7.6 million of additional depreciation expense.


                                       98
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Cheyenne Electric Cost Adjustment Mechanism

      Cheyenne  filed  for an  increase  in its ECA  rates of  approximately  $3
million and new rates became effective January 1, 1999. This increase,  however,
is being contested and hearings are scheduled for March 1999.

Gas Utility Matters

PSCo Rate Cases

      On June 5, 1996, PSCo filed a retail rate case with the CPUC requesting an
annual increase in its jurisdictional  gas department  revenues of 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  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.  The District Court judge
requested oral arguments in the proceeding.  The Company  anticipates a decision
during 1999.

      In  November  1998,  PSCo  filed a  retail  gas  rate  case  with the CPUC
requesting  an annual  increase in rates of  approximately  $23.4  million.  The
request for a rate increase reflects revenues for additional plant investment, a
12.0% return on equity and the recovery of incremental year 2000 costs (see Note
5.  Commitments  and   Contingencies  -  Year  2000  Costs).   The  recovery  of
postemployment benefit costs was not included in this request pending a decision
from the Denver District Court, as discussed  above.  Hearings are set for April
1999. The new rates, if approved, would become effective July 1, 1999.

Cheyenne Rate Case

      In May 1997,  Cheyenne filed an  application  with the WPSC for an overall
annual increase in retail gas revenues of approximately $1.25 million.  The WPSC
approved an increase in retail gas revenues of approximately $1.19 million, with
an 11.71% return on equity, effective October 1, 1997.

10. 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 U.S. 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.  On January 3, 1996,
in a lawsuit by PSCo against its insurance providers,  the Denver District Court

                                       99
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

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
$9.7 million ($7.7 million  attributable  to the Barter  judgment).  On July 10,
1997,  the Colorado  Court of Appeals  overturned  the  previously  awarded $7.7
million 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  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,  although the matter is still pending.  In
addition,  in August  1996,  PSCo  filed a  lawsuit  against  four PRPs  seeking
recovery of certain Barter related costs.  Settlement has been achieved with two
smaller PRP's.  On December 16, 1997,  the U. S. District Court awarded  summary
judgment in favor of the remaining PRPs, on the basis that PSCo failed to follow
CERCLA guidelines in the cleanup. On January 15, 1998, PSCo appealed the summary
judgment to the U.S. Court of Appeals,  which is still  pending.  In March 1998,
PSCo sold the  remaining  Barter  properties,  and the total  proceeds were $1.1
million.

      PCB presence was identified in the basement of an historic office building
located in downtown Denver.  The Company was negotiating the future cleanup with
the current  owners;  however,  in October 1993, the owners filed a civil action
against  PSCo in the Denver  District  Court.  The action  alleged that PSCo was
responsible  for the PCB  releases and  additionally  claimed  other  damages in
unspecified  amounts.  In August  1994,  the  Denver  District  Court  entered a
judgment  approving a $5.3  million  offer of  settlement  between  PSCo and the
building owners  resolving all claims.  In December 1995, PSCo filed  complaints
against all applicable  insurance carriers in the Denver District Court. In June
1997,  the Court  ruled in favor of the  carriers  on summary  judgment  motions
addressing late notice and other issues. In August 1997, PSCo filed an appeal of
the decision with the Colorado  Court of Appeals,  which is still  pending.  One
carrier was  excluded  from the summary  judgment;  subsequently,  that  carrier
received  approval to be dismissed on the same basis as the other  carriers.  In
March 1998,  PSCo reached a settlement  with another carrier who was not part of
the Denver District Court action.  In December 1998, the CPUC approved  recovery
of the electric  jurisdictional  net costs totaling  approximately  $3.1 million
through PSCo's electric department  earnings test over a five-year  amortization
period.

      In addition to these sites, 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 through the  combination of: a) the use of low sulfur coal, b) the
operation of air quality control equipment on certain generation facilities, and
c) allowances issued by the EPA and purchased from other companies. In addition,
PSCo will be required to modify  certain  boilers by the year 2000 to reduce the
NOx emissions in order to comply with Phase II requirements. The estimated Phase
II costs for these future plant  modifications  to meet NOx  requirements  total
approximately  $2.5  million  and  pertain to PSCo's  Cherokee  Unit 1 and 2 and
Arapahoe Unit 3.

      PSCo has announced its  intention 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, but will
only do so if the following  three  conditions are met: 1) the Colorado  General
Assembly  and the  CPUC  approve  recovery  of  these  costs,  2)  PSCo  obtains
flexibility  in  operating  the  plants,  and 3) PSCo is  assured  the  emission
reduction  plan is


                                      100
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

sufficient  to meet future  state  requirements  for 15 years.  Legislation  was
passed and signed into law during the second  quarter of 1998.  During the third
quarter of 1998, PSCo and the CDPHE entered into a voluntary emissions reduction
agreement  under the  legislation.  In  November  1998,  the  Company  filed for
recovery  of these  costs  with the  CPUC.  The  voluntary  emissions  reduction
agreement will be effective only if the CPUC approves a cost recovery  mechanism
acceptable to PSCo.

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 this emission control equipment is in process and on
schedule in accordance with the settlement  agreement.  The initial installation
of some equipment at Unit 1 was completed in late 1998.

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.  There have been no further  settlement  discussions.
Resolution of this matter may require the  installation  of additional  emission
control  equipment.  Management does not believe that this 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 Defueling and Decommissioning

      In 1989, PSCo announced its decision to end nuclear operations at Fort St.
Vrain.   Defueling  of  the  reactor  to  the  Independent  Spent  Fuel  Storage
Installation  ("ISFSI") was completed in June 1992. In March 1996,  PSCo and the
decommissioning   contractors   announced  that  the  physical   decommissioning
activities  at the  facility  had been  completed.  The final  site  survey  was
completed  in late October  1996.  On August 5, 1997,  the NRC  approved  PSCo's
request to terminate the Part 50 license.  This  concluded  the  decommissioning
activities as the  facilities  and the site was released for  unrestricted  use.
PSCo is currently operating a gas-fired combined cycle steam generation plant at
this facility.

      On February 9, 1996, PSCo and the DOE entered into an agreement  resolving
all the  defueling  issues.  As part of this  agreement,  PSCo has agreed to the
following:  1) the DOE assumed title to the fuel currently  stored in the ISFSI,
2) the DOE will assume title to the ISFSI and will be responsible for the future
defueling and decommissioning of the facility, 3) the DOE agreed to pay PSCo $16
million  for the  settlement  of  claims  associated  with the  ISFSI,  4) ISFSI
operating and maintenance costs,  including  licensing fees and other regulatory
costs, will be the  responsibility of the DOE, and 5) PSCo provided to the DOE a
full and complete  release of claims  against the DOE resolving all  contractual
disputes  related to  storage/disposal  of Fort St. Vrain spent nuclear fuel. On
December 17, 1996,  the DOE submitted a

                                      101
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

request to the NRC to transfer the title of the ISFSI. The NRC is reviewing this
request and PSCo anticipates approval in early 1999.

      As a result  of the DOE  settlement,  coupled  with a  complete  review of
expected  remaining  decommissioning  costs and establishment of the anticipated
refund to customers, pre-tax earnings were positively impacted for 1997 and 1996
by  approximately $5 million and $16 million,  respectively.  In accordance with
the 1991 CPUC approval to recover certain decommissioning costs, 50% of any cash
amounts received from the DOE as part of a settlement,  net of costs incurred by
PSCo,  including  legal fees,  is to be refunded  or credited to  customers.  At
December 31, 1998, a $4.7 million  refund to customers  has been recorded on the
consolidated balance sheet.

      Under  the   Price-Anderson   Act,  PSCo  remains   subject  to  potential
assessments  levied in response to any  nuclear  incidents  prior to early 1994.
PSCo continues to maintain primary  commercial  nuclear  liability  insurance of
$100  million for the Fort St.  Vrain site and the  adjoining  ISFSI.  PSCo also
maintains   coverage   of  $20.4   million  to  provide   property   damage  and
decontamination protection in the event of an accident involving the ISFSI.

Leyden Gas Storage Facility

      During August 1998, a Jefferson County, Colorado District Court jury found
PSCo liable for  approximately  $1.8 million for the reduction in land value and
related  damages  resulting from the  allegations  that natural gas had migrated
from the Leyden Gas Storage facility.  PSCo appealed the judgment.  The affected
land is located north of, but not immediately adjacent to, the storage facility.
Additionally,  PSCo has requested  condemnation  authorization for a buffer zone
from the Colorado Oil and Gas Conservation Commission.

Fuel Purchase Requirements

Coal Purchases and Transportation

      PSCo and SPS have in place  various  long-term  contracts for the purchase
and  transportation of coal (and with respect to SPS, the processing of coal for
deliveries  to its bunkers)  which are used in the  generation  of  electricity.
These  contracts  expire on various dates through 2017 and at December 31, 1998,
the  total  estimated   obligations,   based  on  1998  prices,  for  PSCo  were
approximately $729.2 million, and for SPS were approximately $1.2 billion.

Gas Purchases and Transportation

      PSCo  and  Cheyenne  have  long-term  contracts  for  the  purchase,  firm
transportation  and  storage of natural  gas.  These  contracts,  excluding  the
thirty-year  contract  with  Young  Storage  which has been  accounted  for as a
capital lease, are primarily used to support distribution of natural gas and the
majority of these  contracts  expire on various  dates through 2002. At December
31,  1998,  PSCo  has  minimum  annual   obligations  under  such  contracts  of
approximately  $167 million in 1999 declining  thereafter for a total  estimated
commitment of approximately $245 million. The combined PSCo and Cheyenne minimum
annual  obligation at December 31, 1998,  under such contracts is  approximately
$169 million in 1999 declining  thereafter for a total  estimated  commitment of
approximately  $248  million.  SPS does not have any  long-term  contracts  with
minimum obligations.

Purchased Power

      PSCo, SPS and Cheyenne have entered into agreements with utilities and QFs
for  purchased  power to meet  system  load  and  energy  requirements,  replace
generation from  company-owned  units under maintenance and during outages,  and
meet operating reserve obligations.

      PSCo and SPS have various  pay-for-performance  contracts  with QFs having
expiration dates through the year 2022. In general,  these contracts provide for
capacity payments, subject to the QFs meeting certain contract obligations,  and
energy  payments based on actual power taken under the  contracts.  The capacity
and energy  costs

                                      102
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

are  recovered   through  base  rates  and  other  cost   recovery   mechanisms.
Additionally,  the Company's  regulated utilities have long-term purchased power
contracts with various regional  utilities expiring through 2018. Total capacity
and energy  payments  associated  with such contracts for NCE were $490 million,
$477 million, and $473 million;  for PSCo such payments were $439 million,  $452
million and $453  million;  and, for SPS such  payments  were $23  million,  $15
million and $20 million in 1998, 1997 and 1996, respectively.

      At December 31, 1998, the estimated future payments for capacity that NCE,
PSCo and SPS are obligated to purchase, subject to availability,  are as follows
(in thousands):

                                                            Regional
                                                   QFs     Utilities     Total
                                                   ---     ---------     -----
NCE
  1999..............................        $  156,489   $  182,969  $  339,458
  2000..............................           153,808      163,990     317,798
  2001..............................           151,903      142,301     294,204
  2002..............................           139,656      130,534     270,190
  2003..............................           128,171      119,397     247,568
  2004 and thereafter...............         1,053,855    1,018,503   2,072,359
                                             ---------   ----------   ---------
   Total............................        $1,783,882   $1,757,694  $3,541,576
                                            ==========   ==========  ==========

PSCo
  1999..............................        $  140,445   $  166,620  $  307,065
  2000..............................           137,497      155,227     292,724
  2001..............................           135,323      142,301     277,624
  2002..............................           122,802      130,534     253,336
  2003..............................           111,035      119,397     230,432
  2004 and thereafter...............           758,917    1,018,504   1,777,421
                                               -------    ---------   ---------
   Total............................        $1,406,019   $1,732,583  $3,138,602
                                            ==========   ==========  ==========

SPS
  1999..............................          $ 16,044      $ 7,923    $ 23,967
  2000..............................            16,311            -      16,311
  2001..............................            16,580            -      16,580
  2002..............................            16,854            -      16,854
  2003..............................            17,136            -      17,136
  2004 and thereafter...............           294,938            -     294,938
                                               -------      -------     -------
   Total............................          $377,863      $ 7,923    $385,786
                                              ========      =======    ========

      Historically,  all  minimum  coal,  coal  transportation,  natural gas and
purchased power requirements have been met.

System Purchase Option

      SPS and the City of Las Cruces,  New Mexico  ("the  City")  entered into a
System Purchase Option and Rate Agreement in August 1994,  which grants the City
the  option  to  sell  to SPS the  electric  utility  system  serving  the  City
(including distribution, subtransmission and transmission facilities), which the
City plans to acquire  from El Paso  Electric  Company  ("EPE") by  purchase  or
through condemnation proceedings.  The agreement has a three-year term beginning
at the time the City acquires the facilities and ending no later than January 1,
2002. The purchase price which would be paid by SPS would be equal to the amount
required to retire all  outstanding  debt  incurred by the City in acquiring the
facilities plus the City's reasonable costs in acquiring the facilities. SPS has
the right to terminate the agreement if, in SPS's sole discretion, it determines
that any proposed  condemnation  award is excessive  or upon the  occurrence  of
certain other events.  The agreement also provides that, if the City abandons or
dismisses condemnation  proceedings as a consequence of SPS's termination of the
agreement, SPS

                                      103
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

will reimburse the City for one-half of its reasonable  litigation  expenses and
for any of EPE's damages and  litigation  expenses that the City is obligated to
pay by final court order. It is anticipated that the City will file a in suit in
State  District  Court in 1999  seeking to  condemn  the  electric  distribution
facilities of EPE. In conjunction  with the  agreement,  the NMPRC has initiated
Case 2651 to investigate  whether the agreement  constitutes a security,  or the
guarantee  of a  security,  under the New Mexico  Public  Utility  Act.  SPS has
responded  to the  Commission's  Order to Show  Cause and does not  believe  the
agreement  to be a  security  or the  guarantee  of a  security.  A hearing  was
conducted in Case 2651 in July 1997.  On November 24, 1998,  the NMPRC issued an
order dismissing the investigation.

Other
      In  connection  with an  agreement  for the sale of  electric  power,  SPS
guaranteed  certain  obligations of a customer  totaling $48 million at December
31, 1997.  These  obligations are related to the construction of certain utility
property  that,  in the event of default by the  customer,  would revert to SPS.
Additionally,  the Company and its subsidiaries have commitments  related to the
purchase of materials, plant and equipment additions, DSM expenditures and other
various items resulting from the normal course of business.

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,  the  Company'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 was filed with the IRS National  Office on January
15, 1999, with respect to the proposed adjustment.

      Management plans to vigorously  contest this issue.  PSCo has not recorded
any  provision  for  income tax or  interest  expense  related  to this  matter.
Management believes that the Company'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.

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  addressing  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 phase and assessment  phase for IT
systems  were  completed  in  1998.  Additionally,   approximately  77%  of  the
remediation  and testing phase for all critical IT systems was completed in 1998
with the remaining  remediation  and testing planned to be completed by June 30,
1999. For non-IT systems, which exist primarily in the generation, 

                                      104
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

transmission  and  distribution  areas  of  the  business,   the  inventory  and
assessment phases are complete.  Remediation and testing for non-IT systems were
approximately 46% complete at December 31, 1998;the  remainder is expected to be
completed by September 30, 1999. Systems critical to the generation and delivery
of energy are expected to be completed by June 30, 1999.

      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 $25 million
to modify its computer  software,  hardware and other automated  systems used in
operations enabling proper data processing relating to the year 2000 and beyond.
This includes approximately $19 million for inventory,  assessment,  remediation
and testing and approximately $6 million for the replacement of automated system
components.  Furthermore, the Company expects to spend approximately $15 million
in capital expenditures for the accelerated replacement of certain non-compliant
IT systems,  which are expected to be  implemented  by September  30, 1999.  The
majority  of all Y2K  costs  will be  incurred  by PSCo and SPS.  A  significant
portion of the costs incurred to address the Company's Y2K issues will represent
the redeployment of existing information  technology resources.  The table below
details the actual costs incurred  through  December 31, 1998, and the estimated
costs to be incurred during 1999 (in millions).

                                              Actual Costs  Estimated  Estimated
                                             1998 and Prior   1999      Total
                                             --------------   ----      -----

      Operating expenses....................   $  8.2        $ 11.1    $ 19.3
      Capital expenditures .................      7.1          13.4      20.5

      Yorkshire Power has also undertaken  activities to address Y2K issues. The
estimated  proportionate share of Yorkshire Power'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.

      If correction or replacement of non-compliant systems are not completed on
a timely basis,  the Y2K issues may have a material  impact on the operations of
the Company and its subsidiaries. Management, however, does not anticipate these
activities  will  have a  material  adverse  impact on the  financial  position,
results of operations or cash flows of the Company or its subsidiaries.

Leasing Program

      The Company's  subsidiaries lease various equipment and facilities used in
the  normal  course of  business,  some of which are  accounted  for as  capital
leases.  Expiration of the capital  leases range from 1999 to 2025. The net book
value of property  under capital  leases was $39.8 million and $39.6 million for
NCE and PSCo, 

                                      105
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

respectively  at December 31, 1998 and $44.7  million and $44.4  million for NCE
and PSCo,  respectively,  at December 31, 1997.  Assets  acquired  under capital
leases are recorded as property at the lower of  fair-marketvalue or the present
value of future lease payments and are amortized over their actual contract term
in accordance with practices  allowed by regulators.  The related  obligation is
classified  as long-term  debt.  Executory  costs are excluded  from the minimum
lease payments.

      The majority of the operating  leases are under a leasing program that has
initial  noncancellable  terms of one year,  while  the  remaining  leases  have
various terms. These leases may be renewed or replaced. No material restrictions
exist in these leasing  agreements  concerning  dividends,  additional  debt, or
further leasing. Rental expense for 1998, 1997 and 1996 was $15.5 million, $36.2
million and $26.9 million,  respectively,  for NCE; $12.2 million, $31.1 million
and $25.0 million,  respectively,  for PSCo; and $2.4 million,  $4.3 million and
$3.7 million,  respectively,  for SPS.  SPS's rental  expense for the Transition
Period was $1.2 million.

      Estimated  future  minimum  lease  payments at December 31,  1998,  are as
follows (in thousands):

Capital Leases
                                                          NCE        PSCo 
                                                          ---        ---- 
1999 ..............................................    $ 8,020     $ 7,890
2000...............................................      5,158       5,092
2001...............................................      5,035       5,035
2002...............................................      4,820       4,820
2003...............................................      4,646       4,646
All years thereafter...............................     71,711      71,711
                                                       -------     -------
    Total future minimum lease payments                 99,390      99,194
    Less amounts representing interest.............     59,639      59,639
                                                       -------     -------
    Present value of net minimum lease payments....    $39,751     $39,555
                                                       =======     =======

Operating Leases
                                              NCE        PSCo         SPS 
                                              ---        ----         --- 
1999..................................     $13,512     $10,451     $ 2,292
2000..................................      10,647       8,012       2,195
2001..................................       5,450       3,297       1,860
2002..................................         499         347          31
2003..................................         379         245          26
All years thereafter.................        7,752       7,313          52
                                           -------     -------     -------
    Total future minimum lease payments    $38,239     $29,665     $ 6,456   
                                           =======     =======     =======

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.

Union Contracts

PSCo

      The current  Collective  Bargaining  Agreement is a  three-year  agreement
extending  from June 1, 1997 through May 31, 2000 with wage  increases of 3%, 3%
and  3.25%  beginning  in each  year  of the  agreement  1997,  1998  and  1999,
respectively. Approximately 1,946 employees, or 62% of PSCo's total workforce at
December  31,  1998,  are  represented  by  the  International   Brotherhood  of
Electrical Workers, ("IBEW"), Local 111.


                                      106
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

SPS

      The current  Collective  Bargaining  Agreement is a  three-year  agreement
extending from November 1, 1996 through  November 1, 1999 with wage increases of
3% in each year of the agreement.  Approximately 805 employees,  or 60% of SPS's
total workforce at December 31, 1998, are represented by the IBEW, Local 602.

11.  Jointly-Owned Electric Utility Plants (NCE and PSCo)

      The Company's investments in jointly-owned plants (PSCo participation) and
its ownership percentages as of December 31, 1998, are (in thousands):

                                      Plant               Construction
                                       in     Accumulated    Work in
                                     Service Depreciation   Progress Ownership %

   Hayden Unit 1................   $ 70,191    $ 31,785     $  2,841      75.50
   Hayden Unit 2................     58,257      35,518       11,191      37.40
   Hayden Common Facilities.....     23,411         720        1,350      53.10
   Craig Units 1 & 2............     57,660      25,985           50       9.72
   Craig Common Facilities 
     Units 1 & 2 ...............     10,990       3,388           30       9.72
   Craig Common Facilities
      Units 1,2 & 3 ............      8,773       3,698            1       6.47
   Transmission Facilities,
     Including Substations .....     79,722      24,703           92   42.0-73.0
                                     ------      ------          ---
                                   $309,004    $125,797     $ 15,555
                                   ========    ========     ========

      These assets include  approximately  320 Mw of net  dependable  generating
capacity.  PSCo is responsible for its proportionate share of operating expenses
(reflected  in PSCo's and the Company's  consolidated  statements of income) and
construction  expenditures.  The  increase  in plant in  service in 1998 and the
construction  work in  progress  amounts  for Hayden  Unit 1,  Hayden Unit 2 and
Hayden  Common  Facilities  include  construction  expenditures  for  installing
emission control equipment for these facilities as discussed in Note 10.

12. Employee Benefits (NCE, PSCo and SPS)

      The FASB issued SFAS  No.132,  "Employers'  Disclosures  about  Pensions &
Other  Postretirement  Benefits",  effective  for 1998.  This  standard does not
change  the   measurement   or   recognition  of  costs  for  pension  or  other
postretirement plans but rather standardizes disclosures.

Pensions

      The Company and its  subsidiaries  maintain tax qualified  noncontributory
defined  benefit  pension  plans which cover  substantially  all  employees.  At
December  31,  1998,  there  were  5,839,  3,118,  and 1,276  NCE,  PSCo and SPS
employees, respectively, participating in these plans. NCE, as the plan sponsor,
has overall responsibility for directly allocating such costs of each individual
plan to each of the participating  employers.  This allocation was determined by
the plans' actuary based on benefit obligations for active participants.

      Plan  assets are held in a master  trust.  Plan  assets are stated at fair
value and are comprised  primarily of corporate  debt and equity  securities,  a
real estate fund and government securities held either directly or in commingled
funds. The Company's funding policy is to contribute annually, at a minimum, the
amount necessary to satisfy the IRS funding standards.

      A comparison  of the  actuarially  computed  benefit  obligation  and plan
assets at December 31, 1998 and 1997,  is presented in the  following  table (in
thousands).


                                      107
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

                                          1998         1997 
                                          ----         ---- 
Change in Benefit Obligation

Obligation at January 1............    $  991,973    $  919,452
Service cost.......................        23,902        18,418
Interest cost......................        66,735        68,327
Plan amendments *..................       (60,014)            -
Actuarial loss.....................        52,416        42,460
Benefit payments...................       (61,221)      (54,412)
Curtailment........................             -        (2,272)
                                           ------        ------
Obligation at December 31..........    $1,013,791    $  991,973
                                       ==========    ==========

Change in Fair Value of Plan Assets

Fair value of plan assets at January 1 $1,131,270    $  996,085
Actual return on plan assets.......       168,872       189,597
Benefit payments...................       (61,221)      (54,412)
                                          -------       -------
Fair value of plan assets at
  December 31 .....................    $1,238,921    $1,131,270
                                       ==========    ==========

Funded Status

Funded status at December 31.......    $  255,130    $  139,297
Unrecognized transition asset......       (30,871)      (38,109)
Unrecognized prior-service cost (credit)  (33,073)       26,477
Unrecognized gain..................      (120,838)     (111,190)
                                         --------      --------
NCE prepaid pension asset..........    $   40,348     $  16,475
                                       ==========     =========
PSCo  prepaid pension asset........    $   15,089     $   9,925
                                       ==========     =========
SPS  prepaid pension asset.........    $   24,611     $   7,243
                                       ==========     =========

* Effective  July 1, 1998, a new cash balance plan was  established  by NCE. The
NCE board of directors approved amendments to the existing pension plans and the
plan  assets  and  obligation  for  all   non-bargaining   unit  employees  were
transferred into this plan.

                                           1998        1997
                                           ----        ----
Significant assumptions:
  Discount rate                           6.75%        7.0%
  Expected long-term increase
   in compensation level                   4.0%        4.0%

      Cumulative  variances  between actual experience and assumptions for costs
and returns on assets,  outside of a 10%  corridor of the greater of plan assets
and  obligations,  are  amortized  over the average  remaining  service lives of
employees in the plans.

      The  components  of net periodic  pension cost (credit) are as follows (in
thousands):

NCE                                           1998        1997     1996 
- ---                                          -------     ------   -----

Service cost...............................  $ 23,902   $ 18,418  $21,226
Interest cost..............................    66,735     68,327   66,503
Expected return on plan assets.............  (103,928)   (89,567) (75,723)
Curtailment................................         -        126        -
Amortization of transition asset...........    (7,238)    (7,238)  (7,238)
Amortization of prior-service cost (credit)      (464)     2,431    2,440
Amortization of net gain...................    (2,880)    (2,395)    (801)
                                             -------      ------   ------
NCE net periodic pension cost (credit).....  $(23,873)  $ (9,898) $ 6,407
                                             ========   ========  =======
PSCo net periodic pension cost (credit)....  $ (5,093)  $  2,318  $ 6,856
                                             ========   ========  =======
SPS net periodic pension cost (credit).....  $(15,175)  $(10,968) $   855
                                             ========   ========  =======


                                      108
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)


                                                                  SPS
                                                              Transition
1996                                          PSCo       SPS    Period  
- ----                                         ------    ------   --------

Service cost............................... $ 14,317  $  6,846  $ 2,390
Interest cost..............................   46,497    20,266    7,066
Expected return on plan  assets............  (53,739)  (20,984)  (8,263)
Amortization of transition asset...........   (3,674)   (3,564)  (1,188)
Amortization of prior-service cost.........    2,304       136       45
Amortization of net loss (gain)............    1,151    (1,845)     (59)
                                             -------   -------   ------
Net periodic pension cost.................. $  6,856  $    855   $   (9)
                                            ========  ========   ======

                                               1998     1997         1996    
                                             -------   ------    ------------
                                                                 PSCo     SPS   
                                                                 ----     ---   
Significant assumptions:
  Discount rate............................     7.0%   7.5-8.0%  7.25%    8.0%
  Expected long-term increase in 
   compensation level .....................     4.0%  4.25-6.0%   4.0%    6.0%
  Expected weighted average long-term rate
   of return on assets ....................     9.5%      9.75%  9.75%    8.0%

      Additionally,   the  Company  maintains  noncontributory  defined  benefit
supplemental   retirement  income  plans   ("Supplemental   Plan")  for  certain
qualifying  executive  personnel.  The  Supplemental  Plan benefits are paid out
of/or funded through the Company's general fund.

Defined Contribution Plans

      The Company and its subsidiaries maintain defined contribution plans which
cover  substantially  all employees.  Total  contributions to these plans by the
Company and its subsidiaries  were  approximately  $12 million in 1998, 1997 and
1996.

Postretirement Benefits Other Than Pensions

      The Company and its  subsidiaries  provide certain  postretirement  health
care and life  insurance  benefits for  substantially  all  employees  who reach
retirement  age while  working for the  Company.  PSCo,  SPS,  NCS and other NCE
affiliates  participate in these plans. NCE, as the plan sponsor,  will continue
to reflect the costs of these  plans in  accordance  with SFAS 106 and  directly
allocate such costs to each of the participating  employers.  Historically,  the
Company  recorded the cost of these benefits for these plans on a  pay-as-you-go
basis.  The  Company's  subsidiaries  have adopted  SFAS 106 which  requires the
accrual,  during the years that an employee  renders service to the Company,  of
the expected cost of providing  these  benefits to the employee.  The Company is
amortizing the transition obligations for these plans over a period of 20 years.

      Plan  assets  are  stated at fair  value and are  comprised  primarily  of
corporate debt and equity securities,  a real estate fund, government securities
and other short-term investments held either directly or in commingled funds.

      PSCo adopted SFAS 106 based on a level of expense determined in accordance
with the CPUC.  PSCo  transitioned  to full  accrual  accounting  for OPEB costs
between  January 1, 1993 and December 31, 1997,  consistent  with the accounting
requirements for rate regulated enterprises.  All OPEB costs deferred during the
transition period will be amortized on a straight line basis over the subsequent
15 years.

      Additionally, certain state agencies, which regulate the Company's utility
subsidiaries,  have issued guidelines related to the recovery or funding of OPEB
costs.  SPS is  required  to fund  SFAS  106  costs  for  Texas  and New  Mexico
jurisdictional  amounts collected in rates and PSCo and Cheyenne are required to
fund SFAS 106 costs in  irrevocable  external  trusts which are dedicated to the
payment of these postretirement benefits.


                                      109
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      A comparison  of the  actuarially  computed  benefit  obligation  and plan
assets at December 31, 1998 and 1997,  is presented in the  following  table (in
thousands):

                                         1998        1997
                                         ----        ----
Change in Benefit Obligation

Obligation at January 1............    $376,685    $350,354
Service cost.......................       4,917       6,120
Interest cost......................      26,503      26,537
Plan amendments....................     (14,346)          -
Actuarial loss.....................      20,310      16,627
Benefit payments...................     (16,874)    (21,253)
Curtailment........................           -      (1,700)
                                         ------     -------
Obligation at December 31..........    $397,195    $376,685
                                       ========    ========

Change in Fair Value of Plan Assets

Fair value of plan assets at January 1 $112,324    $ 88,673
Actuarial return on plan assets....      14,158       1,423
Employer contributions.............      26,928      28,908
Employee contributions.............         535       1,886
Benefit payments...................      (7,717)     (8,566)
                                        -------     -------
Fair value of plan assets at
 December 31 ......................    $146,228    $112,324
                                       ========    ========

Funded Status

Funded status at December 31.......    $250,967    $264,361
Unrecognized transition obligation.    (212,648)   (227,724)
Unrecognized prior-service credit..      13,588           -
Unrecognized gain..................       9,825      26,079
                                         ------      ------
NCE accrued benefit cost...........    $ 61,732    $ 62,716
                                       ========    ========
PSCo accrued benefit cost..........    $ 55,537    $ 58,695
                                       ========    ========
SPS accrued benefit cost...........    $  5,941    $  3,800
                                       ========    ========

                                        1998        1997 
                                        ----        ---- 
Significant assumptions:
  Discount rate                         6.75%        7.0%
  Expected long-term increase in
   compensation level                    4.0%        4.0%


                                      110
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      The components of net periodic  postretirement benefit cost are as follows
(in thousands):

NCE                                           1998        1997       1996 
- ---                                          ------      ------      -----
Service cost...............................  $  4,917    $  6,121  $  8,191
Interest cost..............................    26,503      26,537    27,998
Expected return on plan assets.............   (10,767)     (8,078)   (6,233)
Curtailment................................         -       3,323         -
Amortization of transition obligation......    15,076      14,992    15,388
Amortization of prior-service cost (credit)      (757)          -         -
Amortization of net gain...................      (786)     (1,162)      (90)
Net periodic postretirement benefit costs..    34,186      41,733    45,254
OPEB expense recognized in accordance with
 current regulations ......................   (39,859)    (36,351)  (37,981)
Increase (decrease) in regulatory
 asset (Note 1) ..........................     (5,673)      5,382     7,273
Regulatory asset at beginning of year......    63,023      57,641    50,368
                                              -------      ------    ------
Regulatory asset at end of period..........  $ 57,350    $ 63,023  $ 57,641
                                             ========    ========  ========

                                                   1998             1997      
                                             ----------------   --------------
                                              PSCo        SPS      PSCo    SPS
                                              ----        ---      ----    ---
Net periodic postretirement benefit costs..  $ 26,044   $3,295  $29,025  $8,199
OPEB expense recognized in accordance with
  current regulations .....................   (31,578)  (3,434) (23,479) (8,363)
Increase (decrease) in regulatory
  asset (Note 1) ..........................    (5,534)    (139)    5,546   (164)
Regulatory asset at beginning of year......    59,995    3,028    54,449  3,192
                                              -------   ------   -------  -----
Regulatory asset at end of period..........  $ 54,461   $2,889   $59,995 $3,028
                                             ========   ======   =======  =====

                                                                  SPS
                                                                Transition
1996                                          PSCo       SPS     Period  
- ----                                         ------    ------   ---------
Service cost...............................  $ 6,928  $ 1,266   $  419
Interest cost..............................   22,982    5,109    1,608
Expected return on plan assets.............   (4,500)  (1,589)    (674)
Amortization of transition obligation......   12,710    2,674      892
Amortization of net gain...................        -        -      (87)
                                             -------   ------   ------
Net periodic postretirement benefit costs..   38,120    7,460    2,158
OPEB expense recognized in accordance with
 current regulations ......................  (31,271)  (6,715)  (2,230)
                                             -------   ------   ------
Increase in regulatory asset (Note 1)......    6,849      745      (72)
Regulatory asset at beginning of year......   47,600    2,519    3,264
                                             -------   ------   ------
Regulatory asset at end of period..........  $54,449   $3,264   $3,192
                                             =======   ======   ======

                                               1998     1997       1996    
                                             -------   ------   -----------
                                                                PSCo    SPS   
                                                                ----    ---   
Significant assumptions:
  Discount rate............................    7.0%   7.5-8.0%  7.25%   8.0%
  Expected long-term increase in 
    compensation level ....................    4.0%   4.0-6.0%   4.0%   6.0%
  Expected weighted average long-term rate
    of return on assets ...................    9.5%   9.75%     9.75%   8.0%

      The assumed  health care cost trend rate for 1998 is 8.5%,  decreasing  to
4.5% in 2007 in 0.5% annual increments. A 1% increase in the assumed health care
cost trend rate would have the following effects (in thousands):
<TABLE>
<CAPTION>
                                                   NCE                          PSCo                       SPS
                                        1% Increase   1% Decrease   1% Increase   1% Decrease   1% Increase     1% Decrease
                                        -----------    ----------   -----------   -----------   -----------     -----------

<S>                                     <C>            <C>             <C>           <C>            <C>            <C>
Effect on total of 
 service and interest cost
 components of net periodic
 postretirement benefit cost.........   $ 3,300         $ (2,600)        $ 2,364     $(1,911)       $  787         $  (634)

Effect on the accumulated 
 postretirement benefit obligation...   $38,200         $(31,300)        $27,290     $(22,509)      $9,414         $(7,681)
</TABLE>


                                      111
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Postemployment Benefits

      The Company and its  subsidiaries  provide  certain  benefits to former or
inactive  employees  after  employment  but  before  retirement  (postemployment
benefits).  At December  31,  1998,  the Company  has  recorded a $31.3  million
liability on the consolidated  balance sheet,  using an assumed discount rate of
6.75%.  The costs of the benefit were  historically  recorded on a pay-as-you-go
basis  prior  to the  adoption  of SFAS  112 in  1994,  which  required  accrual
accounting.  PSCo and Cheyenne  recorded  regulatory assets upon the adoption of
SFAS 112 in anticipation  of obtaining  future rate recovery of these costs (see
Note 1.  Summary  of  Significant  Accounting  Policies  Regulatory  Assets  and
Liabilities).  PSCo  received  FERC  approval  in 1997 to recover  the  electric
wholesale  jurisdictional  portion of its regulatory asset and Cheyenne received
WPSC  approval  in 1997 to  recover  its gas  jurisdictional  portion.  The CPUC
allowed  recovery  of  postemployment  benefit  costs  on an  accrual  basis  in
connection with PSCo's 1996 gas rate case, but denied PSCo's request to amortize
its approximately  $8.9 million regulatory asset (gas  jurisdictional)  portion.
PSCo has  appealed to the Denver  District  Court the  decision  related to this
issue.  A  final  determination  on  the  recovery  of  PSCo's  retail  electric
jurisdictional  portion  has not been made.  Management  believes it is probable
that the Company will receive the required regulatory approvals to recover these
costs in the future.

Incentive Compensation

      The  Company  and  its  subsidiaries  have  Incentive  Compensation  Plans
("Incentive Plans"), which provide for annual and long-term incentive awards for
key  employees.  Approximately  5  million  shares  of  common  stock  have been
authorized  for these  Incentive  Plans for the  issuance of  restricted  shares
and/or stock options,  with certain  vesting and/or exercise  requirements.  The
Company recognizes compensation expense for restricted stock awards based on the
fair value of the Company's  common stock on the date of grant,  consistent with
SFAS 123. Cash,  restricted  stock and stock option awards were made under these
plans during 1998, 1997 and 1996.

      The  Company  applies  Accounting  Principles  Board  Opinion  No.  25  in
accounting for its stock-based  compensation and,  accordingly,  no compensation
cost is recognized  for the issuance of stock  options as the exercise  price of
the options equals the  fair-market  value of the Company's  common stock at the
date of grant. Assuming compensation cost for the Company, PSCo and SPS had been
determined  consistent  with SFAS 123 using the  fair-value  based  method,  the
Company's net income would have been reduced by  approximately  $1.1 million and
$2.8 million in 1998 and 1997,  respectively,  which would have reduced earnings
per share by approximately $0.01 and $0.03,  respectively.  The net income would
have been  reduced by an  insignificant  amount with no impact on  earnings  per
share for 1996.


                                      112
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

SFAS 123's method of accounting for stock-based  compensation plans has not been
applied to  options  granted  prior to January 1, 1995,  and as a result the pro
forma  compensation  cost may not be  representative  of that to be  expected in
future  years.  A summary of the  Company's  stock options at December 31, 1998,
1997 and 1996 and changes  during the years then ended is presented in the table
below:
<TABLE>
<CAPTION>
                                    NCE*                    PSCo                         SPS     
                              ---------------           ---------------              ---------------
                                       Weighted-                   Weighted-                      Weighted-
                                       Average                     Average                        Average
                              Shares   Exercise Price    Shares    Exercise Price     Shares    Exercise Price
                              ------   --------------    ------    --------------     ------    --------------
<S>                         <C>           <C>            <C>           <C>            <C>         <C>
1998
Outstanding at beginning
 of year                    2,085,632     $   41.10
Granted                       570,200         47.55
Exercised                     187,198         34.61
Forfeited                      38,607         45.10
                               ------
Outstanding at end of year  2,430,027         43.07
                            =========  
Exercisable at end of year  1,650,088         40.99
                            =========
Weighted-average fair value
of options granted                         $   4.40

1997
Outstanding at beginning
 of year                      477,783      $  31.46      441,227       $31.38         38,480      $30.80
Granted                     1,690,147         43.32       62,100        39.00          2,147       37.24
Exercised                      78,647         30.34       40,404        29.57          3,666       30.81
Forfeited                       3,651         33.41        3,651        33.41              -           -
Converted to NCE options at
Merger date                         -             -      459,272        32.56         36,961       32.70
                               ------       -------      -------
Outstanding at end of year  2,085,632         41.10            -         -                 -           -
                            =========         =====         ====                       =====
Exercisable at end of year    431,071         32.66            -         -                 -           -
                            =========         =====         ====                       =====

Weighted-average fair value
of options granted                          $  5.45                   $  4.23                     $ 3.70

1996
Outstanding at beginning 
  of year                     407,117        $29.78      347,931      $ 29.33         62,301      $30.78
Granted                       158,270         35.13      158,270        35.13              -           -
Exercised                      74,303         30.87       51,673        30.21         21,647       30.76
Forfeited                      13,301         32.48       13,301        32.84              -           -
                               ------                     ------                       -----
Outstanding at year
 of year                      477,783         31.46      441,227        31.38         40,654       30.79
                              =======                     =======                     ======

Exercisable at end of year    158,970         29.05      158,970        29.05              -           -
                              =======                    =======                       =====

Weighted-average fair value
of options granted                           $ 4.31                   $  4.31                     $    -

SPS Transition Period
Outstanding at beginning of year                                                      40,654      $ 30.79
Granted.                                                                                   -            -
Exercised                                                                              2,174        30.69
Forfeited                                                                                  -            -
                                                                                       -----
Outstanding at year of year                                                           38,480        30.80
                                                                                      ======
Exercisable at end of year                                                                 -
                                                                                      ======
</TABLE>

* For 1997 and 1996 the  amounts  reflect the  conversion  of SPS and PSCo stock
options to NCE stock options.

The fair value of each option  grant is estimated on the date of grant using the
Black-Scholes   Option-Pricing   Model  with  the   following   weighted-average
assumptions:
                                                    1998       1997      1996
                                                 --------   --------   --------
Expected  option life.....................       10 years   10 years  10 years
Stock volatility..........................          13.8%      13.3%    11.95%
Risk-free interest rate...................          5.08%      6.15%     6.21%
Dividend yield............................           5.4%       5.4%      5.8%

                                      113
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      Additionally,  NCE, PSCo and SPS have other plans,  which provide for cash
awards to all employees  based on the  achievement of corporate  goals, of which
certain  goals were met in each of the last three years.  The  expenses  accrued
under the  incentive  programs for the years 1998,  1997 and 1996 are as follows
(in millions of dollars):

                                               1998      1997     1996 
                                              -------   ------   -----

NCE........................................    $ 11.3    $ 4.2  $ 10.9
PSCo.......................................       3.4      2.7     7.8
SPS........................................       1.9      1.1     3.1

In  accordance  with  the  terms  of  the  Company's  Incentive  Plans,  certain
unexercisable  stock options,  restricted stock awards and dividend  equivalents
became  exercisable  or  vested on the  effective  date of the  Merger.  The NCE
Omnibus Incentive Plan, which was adopted in 1997,  contains a change in control
provision  under which all  stock-based  awards,  such as options and restricted
shares, will vest 100% and all cash-based awards will be paid out immediately in
cash as if the performance  objectives have been achieved  through the effective
date of the change in control.

13.  Income Taxes (NCE, PSCo and SPS)

      The  provisions  for  income  taxes for NCE and PSCo for the  years  ended
December 31, 1998,  1997 and 1996,  and for SPS for the years ended December 31,
1998,  1997 and August 31, 1996 and for the four months ended  December 31, 1996
consist of the following (in thousands of dollars):

            1998                                NCE          PSCo          SPS
                                                ---          ----          ---
Current income taxes:
   Federal..........................         $126,122     $91,122     $71,954
   State............................            8,448       8,176       2,592
                                             --------     -------     -------
Total current income taxes..........          134,570      99,298      74,546
                                             --------     -------     -------
Deferred income taxes:
   Federal..........................            5,433       6,014      (8,266)
   State............................              815       1,078        (334)
                                             --------     -------     -------
   Total deferred income taxes......            6,248       7,092      (8,600)
                                             --------     -------     -------

Investment tax credits - net........           (5,222)     (4,896)       (250)
                                             --------     -------     -------

Total provision for income taxes....         $135,596     $101,494    $65,696
                                             ========     ========    =======


            1997                                NCE          PSCo          SPS
                                                ---          ----          ---
Current income taxes:
   Federal..........................         $ 82,337     $55,041     $43,401
   State............................            4,872       3,601       2,057
                                             --------     -------     -------
Total current income taxes..........           87,209      58,642      45,458
                                             --------     -------     -------
Deferred income taxes:
   Federal..........................           45,537      31,548       3,045
   State............................            6,674       5,842         542
                                             --------     -------     -------
   Total deferred income taxes......           52,211      37,390       3,587
                                             --------     -------     -------

Investment tax credits - net........           (5,501)     (5,219)       (250)
                                             --------     -------     -------

Total provision for income taxes....         $133,919     $90,813     $48,795
                                             ========     =======     =======

                                      114
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

            1996                                NCE          PSCo          SPS
                                                ---          ----          ---
Current income taxes:
   Federal..........................         $ 79,365     $41,737     $46,435
   State............................            2,832         951       2,689
                                             --------     -------     -------
     Total current income taxes.....           82,197      42,688      49,124
                                             --------     -------     -------
Deferred income taxes:
   Federal..........................           70,964      53,612      15,776
   State............................            7,998       7,287         647
                                             --------     -------     -------
   Total deferred income taxes......           78,962      60,899      16,423
                                             --------     -------     -------

Investment tax credits - net........           (7,506)     (7,256)       (250)
                                             --------     -------     -------

Total provision for income taxes....         $153,653     $96,331     $65,297
                                             ========     =======     =======

                                          Four Months Ending December 31,
            SPS - Transition Period           1996           1995   
                                          ---------       ---------
                                                          (unaudited)
Current income taxes:
   Federal..........................      $  5,991        $14,799
   State............................           190            998
                                          --------        -------
     Total current income taxes.....         6,181         15,797
                                          --------        -------
Deferred income taxes:
   Federal..........................         4,697          3,117
   State............................           192            132
                                          --------        -------
   Total deferred income taxes......         4,889          3,249
                                          --------        -------

Investment tax credits - net........           (83)           (83)
                                          --------        -------

Total provision for income taxes....      $ 10,987        $18,963
                                          ========        =======

      A reconciliation  of the statutory U.S. income tax rates and the effective
tax rates follows (in thousands):
<TABLE>
<CAPTION>

            1998
                                        NCE           PSCo              SPS     
                                        ---           ----              ---     
<S>                                  <C>       <C>    <C>       <C>   <C>        <C>
Tax computed at U.S. statutory 
  rate on pre-tax accounting income  $169,010  35.0%  $105,559  35.0% $ 63,239   35.0%
Increase (decrease) in tax from:
  Allowance for funds used
   during construction.........        (6,072) (1.3)    (4,315) (1.4)  (1,730)   (1.0)
  Amortization of investment tax 
   credits ....................        (5,221) (1.1)    (4,896) (1.6)    (250)   (0.1)
   State income taxes, net of 
     Federal income tax  benefit        6,010   1.2      6,015   2.0    1,468     0.8
  Cash surrender value of life
   insurance policies..........       (14,553) (3.0)   (14,478) (4.8)     (76)    -
  Amortization of prior 
    flow-through amounts ......        10,509   2.2     10,446   3.5        -     -
  Merger related costs -
    non-deductible ............         1,482   0.3          -     -      562     0.3
  Foreign tax credit...........       (15,457) (3.2)    (1,363) (0.5)       -     -
  International treaty tax relief     (12,806) (2.7)    (1,129) (0.4)       -     -
  Other-net....................         2,694   0.7      5,655   1.9    2,483     1.4
                                        -----  ----     ------  ----    ------   ----
   Total income taxes..........      $135,596  28.1%  $101,494  33.7% $65,696    36.4
                                     ========  ====   ========  ===== =======   =====
</TABLE>


                                      115
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
<TABLE>
<CAPTION>
            1997
                                        NCE           PSCo              SPS     
                                        ---           ----              ---     
<S>                                  <C>       <C>    <C>       <C>   <C>        <C>
Tax computed at U.S. statutory
 rate on pre-tax accounting
 income.........................     $142,506  35.0%  $103,199  35.0% $43,529    35.0%
Increase (decrease) in tax from:
  Allowance for funds used
   during construction.........        (2,220) (0.6)    (2,222) (0.8)      (2)     -
  Amortization of investment tax
   credits ....................        (5,501) (1.4)    (5,219) (1.8)    (250)   (0.2)
   State income taxes, net of 
    Federal income tax  benefit         6,617   1.6      5,250   1.8    1,689     1.4
  Cash surrender value of life
   insurance policies..........       (12,952) (3.2)   (12,876) (4.4)     (76)   (0.1)
  Amortization of prior
   flow-through amounts .......        10,509   2.6     10,483   3.6        -     -
  Merger related costs - 
   non-deductible .............         8,274   2.0      4,921   1.7    3,352     2.7
  Foreign tax credit...........        (7,043) (1.7)    (7,043) (2.4)       -     -
  International treaty tax relief      (6,309) (1.4)    (6,309) (2.1)       -     -
  Other-net....................            38   0.0        629   0.2      553     0.4
                                        -----  -----    ------  ----   ------   -----
   Total income taxes..........      $133,919  32.9%  $ 90,813  30.8% $48,795    39.2% 
                                     ========  ====   ========  ====  =======    =====
</TABLE>
<TABLE>
<CAPTION>
            1996
                                        NCE           PSCo              SPS     
                                        ---           ----              ---     
<S>                                  <C>       <C>    <C>       <C>   <C>       <C>
Tax computed at U.S. statutory
 rate on pre-tax accounting 
 income... ....................      $153,287  35.0%  $100,337  35.0% $59,874   35.0%
Increase (decrease) in tax from:
  Allowance for funds used
   during construction.........        (1,685) (0.3)    (1,438) (0.5)    (248)  (0.1)
  Amortization of investment tax
   credits ....................        (7,506) (1.7)    (7,256) (2.5)    (250)  (0.1)
   State income taxes, net of 
   Federal income tax benefit           6,579   1.5      5,356   1.9    1,748    0.9
  Cash surrender value of life
   insurance policies..........       (11,265) (2.6)   (11,265) (3.9)     (76)   -
  Amortization of prior 
   flow-through amounts .......        10,509   2.4     10,509   3.6        -    -
  Merger related costs -
   non-deductible .............         4,258   1.0      2,574   0.9     2,006   1.2
  Other-net....................          (524) (0.2)    (2,486) (0.9)    2,243   1.3
                                        -----  -----    ------  ----     -----   ---
   Total income taxes..........      $153,653  35.1%  $ 96,331  33.6%  $65,297  38.2% 
                                     ========  ====   ========  =====  =======  ====
</TABLE>
            SPS Transition Period      Four Months Ending December 31,
                                        1996           1995     
                                   -------------  --------------
                                                    (unaudited)
Tax computed at U.S. statutory
 rate on pre-tax accounting
 income... .....................    $10,544  35.0%  $17,468   35.0%
Increase (decrease) in tax from:
  Allowance for funds used
   during construction.........        (144) (0.5)     (180)  (0.4)
  Amortization of investment tax
    credits ...................         (83) (0.3)      (83)  (0.2)
  State income taxes, net of
  Federal income tax benefit...         123   0.4       649    1.3
  Merger related costs - 
   non-deductible .............         488   1.6       620    1.2
  Other-net....................          59   0.3       489    1.1
                                      -----   ---       ---   ----
   Total income taxes..........     $10,987  36.5%  $18,963   38.0%
                                    =======  ====   =======  ======

      The Company and its regulated  subsidiaries have historically provided for
deferred income taxes to the extent allowed by their regulatory agencies whereby
deferred taxes were not provided on all differences  between financial statement
and taxable income (the flow-through method). At December 31, 1998, PSCo and SPS
are fully normalized for FERC jurisdictional  purposes. For state jurisdictional
purposes, PSCo is fully normalized in Colorado and Wyoming, respectfully and SPS
is fully normalized in Texas,  Oklahoma,  and New Mexico (see Note 9. Regulatory
Matters -SPS Electric Cost adjustment  Mechanisms).  SPS is fully  normalized to
the extent allowed by its regulators in Kansas,  with flow-through  treatment of
certain temporary differences. To give effect to temporary differences for which
deferred taxes were not previously  required to be provided,  a regulatory asset
was recognized.  The regulatory asset represents temporary differences primarily
associated with prior flow-through amounts and the equity component of allowance
for funds used during  construction,  net of  temporary  differences  related to
unamortized  investment tax credits and excess  deferred  income taxes that have
resulted  from  historical  reductions  in tax  rates  (see Note 1.  Summary  of
Significant Accounting Policies).

                                      116
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

      The tax effects of significant temporary differences representing deferred
tax  liabilities  and assets as of December 31, 1998 and 1997 are as follows (in
thousands in dollars):

            1998                                NCE          PSCo          SPS
                                                ---          ----          ---
Deferred income tax liabilities:
  Accelerated depreciation and 
    amortization ...................        $ 762,538    $ 471,776    $ 280,949
  Plant basis differences (prior
    flow-through) ..................          150,210       98,208       52,383
  Allowance for equity funds used 
    during construction ............           74,903       45,137       29,664
  Pensions..........................           29,915       35,053       (6,648)
  Other.............................          114,456       64,045       36,169
                                             --------      -------     --------
   Total............................        1,132,022      714,219      392,517
Deferred income tax assets:
  Investment tax credits............           61,912       58,315        2,925
  Contributions in aid of construction         87,685       84,720        2,172
  Other.............................           33,147       24,461       12,878
                                             --------      -------     --------
   Total............................          182,744      167,496       17,975
                                             --------      -------     --------
Net deferred income tax liability...        $ 949,278     $546,723     $374,542
                                             ========     ========     ========

            1997                                NCE          PSCo        SPS
                                                ---          ----        ---
Deferred income tax liabilities:
  Accelerated depreciation and
    amortization ...................        $ 724,879    $ 432,453    $ 278,566
  Plant basis differences (prior
   flow-through) ...................          173,523      118,332       54,384
  Allowance for equity funds used
   during construction .............           77,925       46,715       31,103
  Pensions..........................           31,832       33,105       (1,693)
  Other.............................          116,912       75,143       39,424
                                             --------      -------     --------
   Total............................        1,125,071      705,748      401,784
Deferred income tax assets:
  Investment tax credits............           65,111       61,333       3,065
  Contributions in aid of construction         72,424       69,560       2,172
  Other.............................           37,804       20,737      13,360
                                             --------      -------    --------
   Total............................          175,339      151,630      18,597
                                             --------      -------    --------
Net deferred income tax liability...         $949,732      $554,118   $383,187
                                             ========      ========   ========

      As of  December  31,  1998,  the  consolidated  group  does  not  have any
cumulative  Federal  or state  tax  credits  which  have not  been  realized.  A
valuation  allowance  has not been  recorded  as the  Company  expects  that all
deferred  income  tax assets  will be  realized  in the  future.  The  Company's
management  intends to  reinvest  indefinitely,  its  earnings  from the foreign
operations of Yorkshire  Power.  According,  deferred income taxes have not been
provided on any cumulative amount of unremitted earnings.


                                      117
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Note 14.  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 state 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 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):

                     Electric       Gas                      All
    1998             Utility      Utility  International    Other       Total 
                     --------     -------  -------------    -----       -----
Revenues:
 External customers. $2,626,644  $653,438    $      -    $330,823    $3,610,905
 Intersegment.......        316     5,281           -      75,209        80,806
Electric margin.....  1,339,201         -           -       1,087     1,340,288
Gas margin..........          -   265,971           -      12,722       278,693
Equity in earnings of
  nonconsolidated
  subsidiaries .......        -         -      38,127      (2,026)       36,101
Interest charges and
  preferred dividend
  requirements .......  153,462    28,589         745      15,530       198,326
Income taxes..........  164,189    14,273     (15,817)    (12,075)      150,570
Depreciation &
 amortization ........  216,288    43,889         121       8,445       268,743
Segment profit (loss)   278,726    29,859      51,978       9,396       369,959
Segment assets......  4,777,189   973,263     333,069     482,560     6,566,081
Construction 
 expenditures .......   412,005    99,038           -      97,929       608,972

                     Electric       Gas                      All
    1997             Utility      Utility  International    Other       Total 
                     --------     -------  -------------    -----       -----
Total 
Revenues:
 External customers. $2,450,498  $640,248    $      -    $251,779    $3,342,525
Intersegment........        293     3,825           -      25,819        29,937
Electric margin.....  1,269,080         -           -         987     1,270,067
Gas margin..........          -   268,423           -       4,882       273,305
Equity in earnings of
  nonconsolidated
  subsidiaries .....          -         -      35,499      (1,333)       34,166
Interest charges and
 preferred dividend
 requirements ......    151,718    27,376         186      14,168       193,448
Income taxes........    146,621    18,555      (1,186)    (26,875)      137,115
Depreciation & 
  amortization          193,877    39,833          89       9,279       243,078
Segment profit (loss)   215,712    27,034      35,946       1,746       280,438
Segment assets......  4,770,091 1,060,633     290,845      90,401     6,211,970
Construction
  expenditures .....    365,219   105,894           -       4,384       475,497


                                      118
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

                     Electric       Gas                      All
    1996             Utility      Utility  International    Other       Total 
                     --------     -------  -------------    -----       -----
Total 
Revenues:
 External customers. $2,408,733  $571,329    $      -    $116,972    $3,097,034
Intersegment........        733         -           -       7,008         7,741
Electric margin.....  1,270,520         -           -         157     1,270,677
Gas margin..........          -   239,521           -       7,813       247,334
Equity in earnings of
  nonconsolidated
  subsidiaries .....          -         -           -         389           389
Interest charges and
 preferred dividend
 requirements ......    141,380    23,665           -      14,759       179,804
Income taxes........    163,657    12,913           -     (22,917)      153,653
Depreciation &
 amortization ......    182,667    34,166           -       8,032       224,865
Segment profit (loss)   239,442    17,356           -      13,862       270,660
Segment assets......  4,529,294   933,666           -     135,362     5,598,322
Construction 
 expenditures ......    357,201    96,842           -         925       454,968

Reconciliations:                            1998        1997        1996  
                                          --------    --------    --------
Revenues
   Total revenues for reportable
     segments                           $3,280,398   $3,090,746   $2,980,062
   Intersegment revenue............         80,806       29,937        7,741
   Other revenues..................        330,507      251,779      116,972
   Elimination of intersegment revenues    (80,806)     (29,937)      (7,741)
                                            ------     --------       ------
      Total consolidated revenues..     $3,610,905   $3,342,525   $3,097,034
                                        ==========   ==========   ==========

Profit or Loss
   Total profit for reportable segments $  360,563   $  278,692   $  256,798
   Other profit (loss).............          9,396        1,743       13,862
   Other unallocated amounts.......        (28,002)     (18,954)       3,643
   Elimination of intercompany profit            -            6       (1,962)
                                             -----        -----       ------
      Income before extraordinary item  $  341,957   $  261,487   $  272,341
                                        ==========   ==========   ==========

Assets
   Total assets for reportable
     segments                           $6,083,521   $6,121,049   $5,462,960
   Other assets....................        482,559       90,401      135,362
   Unallocated assets..............      1,105,884    1,109,696    1,019,120
                                         ---------    ---------    ---------
      Total consolidated assets....     $7,671,964   $7,321,146   $6,617,442
                                        ==========   ==========   ==========

                                          Segment                 Consolidated
Other Significant Items                    Totals     Adjustments   Totals 
                                           ------     -----------   ------ 
          1998
   Interest charges & preferred 
     dividends ....................     $  198,326    $  6,473    $ 204,799
   Income taxes....................        150,570     (14,974)     135,596
   Depreciation and amortization...        268,743           -      268,743
   Equity in earnings of
     unconsolidated subsidiaries...         36,101           -       36,101
   Construction expenditures.......        608,972           -      608,972

          1997
   Interest charges & preferred 
     dividends ....................     $  193,448    $ 13,182    $ 206,630
   Income taxes....................        137,115      (3,196)     133,919
   Depreciation and amortization...        243,078           -      243,078
   Equity in earnings of
     unconsolidated subsidiaries...         34,166           -       34,166
   Construction expenditures.......        475,497           -      475,497

                                      119
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)


                                           Segment              Consolidated
          1996                             Totals     Adjustments      Totals 
                                           ------     -----------      ------ 
   Interest charges & preferred
     dividends ....................     $  179,804    $ (4,708)    $ 175,096
   Income taxes....................        153,653           -       153,653
   Depreciation and amortization...        224,865           -       224,865
   Equity in earnings of
     unconsolidated subsidiaries...            389           -           389
   Construction expenditures.......        454,968           -       454,968

PSCo:
      PSCo has three reportable  segments:  electric utility,  gas utility,  and
international.  During 1998, 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. For the years ended December 31, 1997
and 1996,  this segment also  included  Cheyenne's  regulated  operations in the
state of Wyoming. During 1998, the gas utility segment consists primarily of the
activities of PSCo's  regulated gas operations in Colorado.  For the years ended
December  31, 1997 and 1996,  this segment also  included  Cheyenne's  regulated
operations in the state of Wyoming and WGI's regulated  operations in the states
of Colorado and Wyoming. 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 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):

                     Electric      Gas                          All
       1998          Utility      Utility     International    Other     Total
                     --------     --------    -------------   -------    -----
Total    
Revenues from
 external customers. $1,635,573  $ 640,064    $      -    $  8,449   $2,284,086
Electric margin.....    833,752          -           -           -      833,752
Gas margin..........          -    259,509           -           -      259,509
Equity in earnings of
  Yorkshire Power...          -          -       3,446           -        3,446
Interest charges and
 preferred dividend
 requirements ......     93,579      27,745        192      14,291      135,807
Income taxes........     97,924      13,997        427     (10,854)     101,494
Depreciation &
 amortization ......    135,876      43,036         40       1,961      180,913
Segment profit......    166,066      29,207      2,799      15,015      213,087
Segment assets......  2,981,154     944,456          -     433,417    4,359,027
Construction
  expenditures .....    313,825      95,692          -      95,211      504,728


                                      120
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

                     Electric      Gas                          All
       1997           Utility    Utility     International     Other    Total
                     --------    --------    -------------     -----    ------
Total    
Revenues from
 external customers. $1,485,196  $733,091     $      -    $ 11,356   $2,229,643
Electric margin.....    792,588         -            -           -      792,588
Gas margin..........          -   265,346            -           -      265,346
Equity in earnings of
  Yorkshire Power...          -         -       34,926           -       34,926
Interest charges and
 preferred dividend
 requirements .......    92,684    26,980          186      13,885      133,735
Income taxes........     92,930    18,496       (1,186)    (19,427)      90,813
Depreciation &
 amortization ......    125,418    38,983           89       3,961      168,451
Segment profit......    137,899    25,813       35,946      14,091      213,749
Segment assets......  2,955,537 1,027,060      290,845      55,212    4,328,654
Construction 
  expenditures .....    246,015   103,957            -       2,301      352,273

                     Electric      Gas                         All
       1996           Utility    Utility     International    Other     Total
                     --------    --------    -------------    -----     ------
Total    
Revenues from
 external customers. $1,488,990  $640,497    $      -    $  7,951    $2,137,438
Electric margin.....    803,120         -           -           -       803,120
Gas margin..........          -   239,521           -       7,813       247,334
Interest charges and
 preferred dividend
 requirements ......     87,001    23,665           -      14,115       124,781
Income taxes........    106,615    12,913           -     (23,197)       96,331
Depreciation &
  amortization .....    116,802    34,166           -       3,663       154,631
Segment profit......    151,139    17,356           -      11,900       180,395
Segment assets......  2,840,481   930,474           -      71,109     3,842,064
Construction
 expenditures ......    223,395    96,842           -         925       321,162

Reconciliations:                            1998        1997        1996  
                                          --------    --------    --------
Revenues
   Total revenues for reportable
     segments                           $2,275,637   $2,218,287   $2,129,487
   Other revenues..................          8,449       11,356        7,951
                                             -----       ------        -----
      Total consolidated revenues..     $2,284,086   $2,229,643   $2,137,438
                                        ==========   ==========   ==========

Profit or Loss
   Total profit or loss for reportable
    segments                              $198,072    $199,658      $179,679
   Other profit or loss............         15,015      14,091        11,926
   Other unallocated amounts.......        (18,316)    (21,458)      (13,107)
   Elimination of intersegment profit            -          (1)            -  
                                             -----      ------          ----
      Income before extraordinary item    $194,771    $192,290      $178,498    
                                          ========    ========      ========

Assets
   Total assets for reportable segments $3,925,610  $4,273,442    $3,770,955
   Other assets....................        433,417      55,212        71,109
   Other unallocated amounts.......        818,609     666,079       730,584
                                          --------    --------      --------
      Consolidated total...........     $5,177,636  $4,994,733    $4,572,648
                                        ==========  ==========    ==========


                                      121
<PAGE>
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)


                                          Segment                 Consolidated
Other Significant Items                    Totals     Adjustments   Totals 
          1998
   Interest charges & preferred
     dividends ....................       $135,807     $ 7,839    $143,646
   Income taxes....................        101,494           -     101,494
   Depreciation and amortization...        180,913           -     180,913
   Equity in earnings of Yorkshire
     Power ........................          3,446           -       3,446
     Construction expenditures.....        504,727           -     504,727

          1997
   Interest charges & preferred
     dividends .....................      $133,735     $14,219    $147,954
   Income taxes....................         90,813           -      90,813
   Depreciation and amortization...        168,451           -     168,451
   Equity in earnings of Yorkshire
     Power .......................          34,926           -      34,926
   Construction expenditures.......        352,273           -     352,273

          1996
   Interest charges & preferred
    dividends .....................       $124,781     $(3,213)   $121,568
   Income taxes....................         96,331           -      96,331
   Depreciation and amortization...        154,631           -     154,631
   Construction expenditures.......        321,162           -     321,162

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
$951.2 million,  $979.3  million,  $931.8  million,  $306.3 million,  and $278.5
million for the fiscal years ended  December 31, 1998,  1997 and August 31, 1996
and for the four months ended December 1996 and 1995,  respectively.  During the
fiscal  years ended  December 31, 1997 and August 31,  1996,  operating  results
included the  activities of Quixx and UE,  subsidiaries  that were  subsequently
transferred to NC Enterprises  in connection  with the Merger.  Neither of these
two segments has ever met any of the  quantitative  thresholds  for  determining
reportable segments.

15.  Transactions with Affiliates (PSCo and SPS)

      PSCo and SPS receive various administrative, management, environmental and
other  support  services  from NCS,  which began  operations  on May 1, 1997 and
construction services from UE. In addition, PSCo and SPS pay interest expense on
any short-term  borrowings from NCE.  Dividends on common stock declared by PSCo
and SPS are paid to NCE.

      PSCo sells firm and interruptible  transportation  services to e prime for
gas delivered into the Denver/Pueblo operating area. PSCo also receives interest
income from NC  Enterprises  on the note  receivable  related to the sale of NCI
effective  March 31, 1998 (see Note 2.  "Investment in Yorkshire  Power and U.K.
Windfall  Tax").  SPS receives  interest  income from NC Enterprises on the note
receivable  related to the sale of Quixx and UE as part of the Merger. The table
below  contains  the  various  significant  affiliate   transactions  among  the
companies and related parties for the years ended December 31, 1998 and 1997 (in
thousands).

                                        PSCo                      SPS        
                                 -------------------     --------------------
                                  1998        1997        1998        1997   
                                 -------     -------     -------     --------

Gas revenues.................    $ 5,281     $ 3,825     $     -     $      -
Operating expenses...........    197,862     108,096      63,108       36,317
Interest income..............     14,188           -       8,630        3,618
Interest expenses............      1,714         156       1,390          747
Dividends paid to NCE........    188,845      76,093      75,157       45,092
Construction services........     68,744      16,934       6,465        3,832

There were no significant related party transactions for the year ended
December 31, 1996.

                                      122
<PAGE>

16.  Quarterly Financial Data (Unaudited) (NCE, PSCo and SPS)

      The  following  summarized  quarterly  information  for  1998  and 1997 is
unaudited,  but includes all adjustments  (consisting  only of normal  recurring
accruals) which the Company  considers  necessary for a fair presentation of the
results  for  the  periods.  Information  for any one  quarterly  period  is not
necessarily  indicative of the results which may be expected for a  twelve-month
period due to seasonal and other factors (in thousands, except per share data).
<TABLE>
<CAPTION>

NCE                                                  Three Months ended        
                                             --------------------------------------------------
                1998                         March 31     June 30    September 30   December 31
              -------                        ---------    --------   ------------   -----------
<S>                                          <C>           <C>          <C>         <C>      
Operating revenues....................       $ 939,504     $ 859,621    $915,898    $ 895,882
Operating income .....................         181,837       146,666     164,173      157,825
Net income ...........................          86,149        56,593      90,772      108,443
Earnings per share of common stock 
  outstanding:
  Basic...............................           $0.78         $0.50       $0.82        $0.96
  Diluted.............................           $0.78         $0.50       $0.82        $0.95

                1997 
                ----
Operating revenues....................       $ 890,011     $ 776,742    $793,472    $ 882,300
Operating income .....................         176,000       130,336     153,168      169,721
Net income (loss).....................          78,156        34,045     (47,225)      85,946
Basic and diluted earnings per share
 of common stock outstanding:
  Income before extraordinary item....           $0.75         $0.33      $ 0.61        $0.81
  Extraordinary item  (1) ............               -             -       (1.06)           -
  Net income (loss)...................           $0.75         $0.33      $(0.45)       $0.81
</TABLE>

<TABLE>
<CAPTION>

PSCo                                                 Three Months ended        
                                             ---------------------------------------------------
                1998                         March 31     June 30    September 30    December 31
              -------                        ---------    --------   ------------    -----------
<S>                                          <C>          <C>           <C>          <C>     
Operating revenues....................       $ 644,642    $ 504,598     $541,601     $593,245
Operating income .....................          99,846       63,266       76,834       92,072
Net income............................          68,897       30,908       44,015       56,283

                1997
               ----- 
Operating revenues....................       $ 668,717    $ 533,520     $466,582     $560,824
Operating income .....................          95,981       73,271       70,372       97,729
Net income............................          62,881       30,607      (73,085)(1)   73,074
</TABLE>

<TABLE>
<CAPTION>
SPS                                                  Three Months ended        
                                             ---------------------------------------------------
                1998                         March 31     June 30    September 30    December 31
              -------                        ---------    --------   ------------    -----------
<S>                                           <C>        <C>            <C>           <C>     
Operating revenues....................        $199,732   $ 264,006      $284,648      $202,801
Operating income ...................            31,339      49,319        49,458        35,563
Net income..........................            18,139      36,917        36,929        23,002

                1997 
               -----
Operating revenues....................        $221,295   $ 243,221      $284,156      $230,611
Operating income ...................            34,457      41,744        50,976        32,104
Net income..........................            18,218       6,380 (2)    31,111        19,866

</TABLE>

(1)Includes the  extraordinary  U.K.  windfall tax  recognized in the third
   quarter 1997.
(2)Includes the write-off of Quixx's & UE's  investment  in the Carolina  Energy
   Project.


                                      123
<PAGE>



                                                                   SCHEDULE II
                          NEW CENTURY ENERGIES, INC.
                               AND SUBSIDIARIES

                VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

                 Years Ended December 31, 1998, 1997 and 1996

                                                 Additions
                                                 --------- 
                              Balance at Charged Charged to  Deductions  Balance
                              beginning    to      other      from       at end
                              of period   income accounts(1) reserves(2) of year
                              ---------   ------ ----------- ----------- -------
NCE                                              (in thousands)

Reserve deducted from related
 assets:
 Provision for uncollectible
 accounts:

   1998.......................      $5,355  $6,852    $  41  $ 7,406    $4,842
                                    ======  ======    =====  =======    ======

   1997.......................      $6,623  $5,854    $  79  $ 7,201    $5,355
                                    ======  ======    =====  =======    ======

   1996.......................      $6,218  $7,283    $ 453  $ 7,331    $6,623
                                    ======  ======    =====  =======    ======


PSCo

Reserve deducted from related
 assets:
 Provision for uncollectible
 accounts:

   1998.......................      $2,272  $5,593    $ (32) $ 5,579    $2,254
                                    ======  ======    ====== =======    ======

   1997.......................      $4,049  $5,193    $(500) $ 6,470    $2,272
                                    ======  ======    ====== =======    ======

   1996.......................      $3,630  $6,741    $ 477  $ 6,799    $4,049
                                    ======  ======    =====  =======    ======


SPS

Reserve deducted from related
 assets:
 Provision for uncollectible
 accounts:

   1998.......................      $2,442  $  400    $  (7) $ 1,140    $1,695
                                    ======  ======    ====== =======    ======

   1997.......................      $2,574  $  661    $ (62) $   731    $2,442
                                    ======  ======    ====== =======    ======

   1996 (September 1996 through
         December 1996)             $2,669  $  223    $ (13) $   305    $2,574
                                    ======  ======    =====  =======    ======

   1996 (3)...................      $2,494  $  535    $  (9) $   351    $2,669
                                    ======  ======    ====== =======    ======

   ---------------------------------------

(1)Uncollectible  accounts  subsequently  recovered,  transfers from  customers'
   deposits,  etc.,  and the  transfer  of  certain  subsidiaries'  balances  of
   $571,620 for PSCo and $69,320 for SPS in 1997.
(2) Uncollectible  accounts  written off or transferred  to other parties.
(3) Information reflects fiscal year ended August 31, 1996.


                                      124
<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)

<TABLE>
<CAPTION>

                                                 Year Ended December 31,      
                                        1998      1997      1996      1995     1994                                 
                                        ----      ----      ----      ----     ----                                 
                                             (in thousands, except ratios)

<S>                                   <C>        <C>       <C>       <C>       <C>
Fixed charges:
   Interest on long-term debt.......  $115,808   $114,460  $ 92,205  $ 85,832  $ 89,005
Dividends on PSCo obligated 
 mandatorily redeemable preferred
 securities.........................     9,711          -         -         -         -
   Interest on borrowings against
   COLI contracts ..................    51,664     46,082    40,160    34,717    29,786
   Other interest...................    20,849     24,117    17,238    23,392    14,235
   Amortization of debt discount and
    expense less premium                 4,274      3,987     3,621     3,278     3,126
   Interest component of rental
    expense .........................    8,233      9,012    10,649     6,729     6,888 
                                         -----      -----    ------     -----     -----

     Total .........................  $210,539    $197,658 $163,873  $153,948  $143,040
                                      ========    ======== ========  ========  ========

Earnings (before fixed charges and 
 taxes on income):
   Net income.......................  $200,103    $204,042 $190,346  $178,856  $170,269
   Fixed charges as above...........   210,539     197,658  163,873   153,948   143,040
   Provisions for Federal and state
    taxes on income, net of investment
    tax credit amortization ........   101,494      90,813   96,331    95,357    48,500 
                                       -------      ------   ------    ------    ------

     Total..........................  $512,136    $492,513 $450,550  $428,161  $361,809
                                      ========    ======== ========  ========  ========

Ratio of earnings to fixed charges..      2.43        2.49     2.75      2.78      2.53
                                         =====       =====    =====    ======     =====
</TABLE>

                                      125
<PAGE>


                                                                   EXHIBIT 12(b)

                     SOUTHWESTERN PUBLIC SERVICE COMPANY

                       COMPUTATION OF RATIO OF EARNINGS
                               TO FIXED CHARGES

          (not covered by Report of Independent Public Accountants)


<TABLE>
<CAPTION>

                                     Year Ended      Trans-       Year Ended
                                    December 31,      ition       August 31,      
                                    1998     1997    Period     1996       1995     1994
                                    ----     ----    ------     ----       ----     ----
                                          (in thousands, except ratios)

<S>                                <C>      <C>      <C>      <C>         <C>     <C>
Fixed charges:
 Interest on long-term debt.....   $44,220  $44,112  $15,556  $44,964     $ 40,645 $37,881
 Dividends on SPS obligated 
  mandatorily redeemable 
  preferred securities.........      7,850    7,850    1,526        -            -       -
 Other interest.................     8,925    7,444    1,612    6,561        3,219   3,068
 Amortization of debt discount
  and expense less premium .....     2,251    2,244      235      577          534     518
 Interest component of rental
  expense ......................       806    1,425      415    1,245        1,292   1,184     
                                       ---    -----    -----    -----        -----  ------

     Total .....................   $64,052  $63,075  $19,344  $53,347     $ 45,690  $42,651
                                   =======  =======  =======  =======     ========  =======

Earnings (before fixed charges and
  taxes on income):
 Net income.....................   $114,987 $ 75,575 $19,137  $105,773    $119,477 $102,168
 Fixed charges as above.........     64,052   63,075  19,344    53,347      45,690   42,651
 Provisions for Federal and state
  taxes on income, net of
  investment tax credit
  amortization .................     65,696   48,795  10,987    65,297      67,649   58,388
                                     ------   ------  ------    ------      ------   ------

     Total......................   $244,735 $187,445 $49,468  $224,417    $232,816 $203,207
                                   ======== ======== =======  ========    ======== ======== 

Ratio of earnings to fixed charges     3.82     2.97    2.56      4.21        5.10     4.76
                                       ====     ====    ====      ====        ====     ====
</TABLE>

                                      126
<PAGE>


Item 9.  Changes in and  Disagreements  with  Accountants  on  Accounting  and
Financial Disclosure

      Does not apply.
                                   PART III

Item 10.  Directors and Executive  Officers of the Registrant  (NCE,  PSCo and
          SPS)

      Biographies  concerning the directors of NCE are contained  under ELECTION
OF  DIRECTORS in NCE's 1999 Proxy  Statement,  which is  incorporated  herein by
reference.  The following  table sets forth certain  information  concerning the
executive  officers  of NCE as of  December  31,  1998.  Information  concerning
directors  and executive  officers of PSCo and SPS has been omitted  pursuant to
General Instructions I(2)(c).

NEW CENTURY ENERGIES, INC.

<TABLE>
<CAPTION>
Name                 Age   Occupation/Title                                          Period
- ----                 ---   ----------------                                          ------

Executive Officers
- ------------------
<S>                   <C>                                                            <C>         
Bill D. Helton        60  Chairman of the Board, CEO and Director                    1997-Present
                          Chairman of the Board and Director                         1997-Present
                            Public Service Company of Colorado, Cheyenne Light,
                            Fuel and Power Company, NC Enterprises, Inc.,
                            New Century Services, Inc., New Century-Cadence,Inc.,
                            and e prime, inc.
                          Director, Southwestern Public Service Company              1990-Present
                          CEO, Southwestern Public Service Company                   1990-1997
                          Chairman  of the  Board,  Southwestern  Public  Service
                            Company, Quixx Corporation and Utility Engineering       1991-Present
                            Corporation
                           Director, Natural Fuels Corporation                       1997-Present
                           Director, Quixx Corporation                               1990-Present
                           Chairman of the Board and Director, Quixx Power 
                              Services, Inc.                                         1993-Present
                           Director, Utility Engineering Corporation                 1989-Present
                           Director, New Century International, Inc.                 1998-Present
                           Chairman of the Board, Natural Fuels Corporation          1998-Present
                           Chairman of the Board and Director                        1998-Present
                             New Century-Centrus, Inc. and New Century Energies          
                             Foundation
Wayne H. Brunetti (a) 56   Vice Chairman, President, COO, and Director               1997-Present
                           Vice Chairman and CEO, Public Service Company of          1997-Present
                            Colorado and Cheyenne Light, Fuel and Power Company
                           President and Director, Public Service Company of Colorado 1994-Present
                           Vice Chairman, President, CEO, and Director,              1997-Present
                             NC Enterprises, Inc., New Century Services, Inc. and
                             New Century Cadence, Inc.
                           Chairman, 1480 Welton, Inc., Green and Clear Lakes        1997-Present
                             Company, and WestGas InterState, Inc.
                           Chairman, PSR Investments, Inc. and PS Colorado Credit    1997-1998
                             Corporation
                           President and Director, 1480 Welton, Inc.                 1996-Present
                           Director, Natural Fuels Corporation                       1994-Present
                           President, Natural Fuels Corporation                      1996-1998
                           Vice Chairman, CEO, and Director, Southwestern Public     1997-Present
                             Service Company

                                      127
<PAGE>

                           Director, Cheyenne Light, Fuel and Power Co., Green and   1994-Present
                             Clear Lakes Company, and WestGas InterState, Inc.
                           Director, PSR Investments, Inc. and PS Colorado Credit    1994-1998
                             Corporation
                           Director, Young Gas Storage Company and e prime, inc.     1995-Present
                           President and Director, Fuel Resources Development Co.    1995-Present
                           President, Green and Clear Lakes Company and WestGas      1995-Present
                             InterState, Inc.
                           President, New Century International, Inc.                1997-1997
                           Director, New Century International, Inc.                 1997-Present
                           Chairman of the Board, New Century International, Inc.    1998-Present
                           President, PSR Investments, Inc. and PS Colorado Credit   1996-1998
                             Corporation
                           Director, and Yorkshire Electricity Group plc and         1997-Present
                             Yorkshire Holdings, plc and Yorkshire Power Group
                              Limited
                           Chairman of the Board, Cheyenne Light, Fuel and Power     1997-1997
                             Company and e prime, inc.
                           Vice Chairman and Director, Quixx Corporation and
                             Utility Engineering Corporation                         1997-Present
                           Director, Yorkshire Holdings plc                          1997-Present
                           Vice Chairman, Yorkshire Holdings plc                     1997-1998
                           Vice Chairman, e prime, inc.                              1997-Present
                           Vice Chairman, Yorkshire Electricity Group plc            1997-1998
                           Chairman of the Board, Yorkshire Electricity Group, plc   1998-Present
                           Chairman of the Board and Director, Yorkshire Power       1998-Present
                             Group Limited, Yorkshire Holdings plc
                           Chairman of the Board and Director                        1998-Present
                             Planergy (Delaware) Inc., Planergy Energy Services
                             Corporation, Planergy New York, Inc., Planergy
                             Power II, Inc., Planergy Services USA, Inc., Planergy
                             Services of California,  Inc.,  Planergy  Services of
                             Houston, Inc., Planergy Services of Texas, Inc.,
                             Planergy Services, Inc., Planergy, Inc., Cogeneration
                             Capital Associates Incorporated, The Planergy Group, Inc.
                           President and Director, New Century Energies Foundation   1998-Present
                           Vice Chairman, Director, President and CEO, New Century   1998-Present
                             Centrus, Inc.
Richard C. Kelly (d)  52   Executive Vice President and Chief Financial Officer      1997-Present
                           President, Treasurer, and Director                        1995-1997
                           Executive Vice President and Director, Public Service     1997-Present
                             Company of Colorado and Southwestern Public Service
                             Company
                           Chief Financial Officer, Public Service Company of        1997-1998
                             Colorado and Southwestern Public Service Company
                           Senior Vice President, Public Service Company of Colorado 1990-1997
                           Treasurer, Public Service Company of Colorado             1986-1997
                           Executive Vice President and Director, NC Enterprises,    1997-Present
                             Inc. and New Century Services, Inc.
                           Treasurer, Fuel Resources Development Co., Green and      1994-Present
                             Clear Lakes Company and WestGas InterState, Inc.
                           Treasurer, 1480 Welton, Inc. and Cheyenne Light, Fuel     1994-1998
                             and Power Company

                                      128
<PAGE>
                           Director, Texas-Ohio Gas, Inc., Texas-Ohio Pipeline,      1996-Present
                             Inc., and e prime Networks, Inc.
                           Director, Quixx Corporation, Utility Engineering          1997-Present
                             Corporation, Yorkshire Electricity Group plc,
                             Yorkshire Holdings plc, Yorkshire Power Group Limited,
                             e prime operating, inc. and e prime projects 
                             international, inc.
                           Director, 1480 Welton, Inc.                               1989-Present
                           Director, Cheyenne Light, Fuel and Power Company          1990-Present
                           Vice President, Fuel Resources Development Co.            1990-Present
                           Director, Fuel Resources Development Co.                  1991-Present
                           Director, Green and Clear Lakes Company and               1990-Present
                             Natural Fuels Corporation                               
                           Director, New Century International, Inc.                 1997-Present
                           Secretary, New Century International, Inc.                1997-1998
                           Director and Treasurer, New Century-Cadence, Inc.         1997-Present
                           Director, PSR Investments, Inc.                           1986-Present
                           Vice President, PSR Investments, Inc.                     1986-1998
                           Director, PS Colorado Credit Corporation                  1987-Present
                           Vice President, PS Colorado Credit Corporation            1987-1998
                           Director, WestGas InterState, Inc.                        1993-Present
                           Director, Young Gas Storage Company and e prime inc.      1995-Present
                           Vice President and Treasurer, Young Gas Storage Company   1995-1998
                           Secretary, Treasurer and Director, e prime                1997-Present
                              Energy Marketing, Inc.
                           President and CEO, e prime inc.                           1997-Present
                           Vice President and Treasurer, e prime, inc.               1995-1997
                           Chairman of the Board Texas-Ohio Gas, Inc., Texas-Ohio    1997-Present
                             Pipeline, Inc.
                           Chairman of the Board, and Young Gas Storage Company      1998-Present
                           Chief Financial Officer, New Century Services, Inc.,      1998-Present
                             WestGas InterState, Inc. and Green and Clear Lakes
                             Company
                           Director, Planergy (Delaware), Inc., Planergy Energy      1998-Present
                             Services Corporation, Planergy Services USA, Inc.,
                             Planergy Services of California, Inc., Planergy Services
                             of Houston, Inc., Planergy Services of Texas, Inc.,
                             Planergy Services, Inc., Planergy, Inc., Cogeneration
                             Capital Associates Incorporated
                           Vice President and Director, Planergy New York, Inc.,     1998-Present
                             Planergy Power II, Inc., The Planergy Group, Inc.
                           President and Director, NCE Communications, Inc.          1996-Present
                            (former e prime Telecom, Inc.)
                           Treasurer and Director, New Century Energies Foundation   1998-Present
                             and New Century-Centrus, Inc.
                           Management Committee Representative and Director, ep3,L.P.  1998-Present
                           Treasurer and Corporate  Secretary,  e prime  Networks,Inc. 1998-Present
Paul J. Bonavia (b)  47    Senior Vice President and General Counsel                   1997-Present
                             General Counsel, 1480 Welton, Inc., Green and Clear Lakes 1998-Present
                             Company, NC Enterprises, Inc., PSR Investments, Inc.,
                             PS Colorado Credit  Corporation,  WestGas InterState, Inc.
                           Senior Vice President and General Counsel, Cheyenne Light,  1998-Present
                             Fuel and Power Company, New Century Services, Inc.,
                             Public Service Company of Colorado and Southwestern
                             Public Service Company
                                   129
<PAGE>

                           President, General Counsel and Director, New Century        1998-Present
                             International, Inc.
                           Director, Yorkshire Power Group Limited, Yorkshire          1998-Present
                             Holdings plc and Yorkshire Electric Group plc
Brian P. Jackson (c) 40    Senior Vice President Finance and Administrative Services   1997-Present
                           Treasurer, Chief Financial Officer and Director,            1998-Present
                           1480 Welton, Inc., NC Enterprises, Inc. and Cheyenne 
                              Light, Fuel and Power Company
                           Treasurer and Chief Financial Officer, NCE                  1998-Present
                              Communications, Inc. and New Century International,
                              Inc.
                           Chairman of the Board, President, Chief Financial           1998-Present
                            Officer, and Director, PSR Investments, Inc. and PS
                            Colorado Credit Corporation
                           Treasurer, Planergy (Delaware), Inc., Planergy Energy       1998-Present
                             Services  Corporation,  Planergy  Limited,
                             Planergy New York, Inc., Planergy  Power  II,  Inc.,
                             Planergy Services USA, Inc., Planergy Services of
                             California,  Inc., Planergy Services of Houston, Inc.,
                             Planergy Services of Texas, Inc., Planergy Services,
                             Inc., Planergy, Inc., The Planergy Group, Inc.,
                             Cogeneration Capital Associates Incorporated
                           Treasurer and Director, e prime, inc.                       1998-Present
                           Senior Vice President and Chief Financial Officer,          1998-Present
                             Southwestern Public Service Company
                           Senior Vice President, Chief Financial Officer and          1998-Present
                             Director, Public Service Company of Colorado
                           Senior Vice President, New Century Services, Inc.           1998-Present
                           Management Committee Representative, Centrus,LLP            1998-Present
                           Director, New Century-Centrus, Inc.                         1998-Present
Teresa S. Madden     42    Controller                                                  1997-Present
                           Secretary                                                   1997-1998
                           Controller, Public Service Company of Colorado,             1997-Present
                             Southwestern Public Service Company and New Century
                             Services, Inc. 
                           Secretary, Public Service Company of Colorado and New       1997-1998
                             Century Services, Inc.
                           Assistant Secretary, Southwestern Public Service Company    1997-1998
                           Director, Yorkshire Power Group Limited, Yorkshire          1997-1998
                             Holdings plc and Yorkshire Electricity Group plc
                           Secretary, Fuel Resources Development Co.                   1997-Present
                           Secretary, NC Enterprises, Inc., WestGas InterState,Inc.,   1997-1998
                             e  prime,inc., Cheyenne Light, Fuel and Power Company,
                             New Century-Cadence, Inc., Texas-Ohio Pipeline, Inc.
                             and Texas-Ohio Gas, Inc.
                           Manager of Corporate Accounting, Public Service Company     1990-1997
                             of Colorado
                           Assistant Secretary, Public Service Company of Colorado     1995-1997
                             and e prime, inc.
                           Assistant Secretary, 1480 Welton, Inc., PSR Investments,    1991-1998
                             Inc., PS Colorado Credit Corporation,
                           Assistant Secretary, Cheyenne Light, Fuel and Power         1991-1997
                             Company and Fuel Resources Development Co.

                                      130
<PAGE>

                           Controller, 1480 Welton, Inc., Cheyenne Light, Fuel         1998-Present
                             and Power Company, Green and Clear Lakes Company, NC
                             Enterprises, Inc., New Century International, Inc.,
                             PSR Investments, Inc., PS Colorado Credit Corporation,
                             and WestGas InterState, Inc.
                           Assistant Secretary, Yorkshire Electricity Group plc,       1998-Present
                             Yorkshire Holdings plc, and Yorkshire Power Group Limited
James D. Steinhilper(e)49  Treasurer                                                   1997-Present
                           Treasurer, Public Service Company of Colorado and           1997-Present
                             Southwestern Public Service Company
                           Assistant Treasurer, Cheyenne Light, Fuel and Power         1997-Present
                             Company, New Century-Cadence, Inc. and WestGas
                             InterState, Inc.
                           Director of Finance and Treasurer, New Century Services,    1997-Present
                             Inc.  
                           Assistant Treasurer, 1480 Welton, Inc., Green and           1998-Present
                             Clear Lakes Company, and New Century-Centrus, Inc.
                           Treasurer and Director,  PSR  Investments,  Inc. and PS     1998-Present
                             Colorado Credit Corporation
                           Treasurer, e prime, inc. and NC Enterprises, Inc.           1997-1998
                           Group Manager, Finance, Southwestern Public Service Company 1989-1997
                           Chairman of the Board, President and Director, Borger       1998-Present
                             Funding Corporation
                           Treasurer and Assistant Secretary, KES Montego, Inc.,       1998-Present
                             Quixx Carolina, Inc., Quixx Corporation, Quixx Jamaica,
                             Inc., Quixx Power Services, Inc., Quixx WPP94, Inc., and
                             Quixxlin Corp.
                           Treasurer, Director and Assistant Secretary, Quixx Borger   1998-Present
                             Cogen, Inc., and Quixx Mustang Station, Inc.
David M. Wilks       52    Executive Vice President and Director, Public Service       1997-Present
                             Company of Colorado and New Century Services, Inc.
                           Executive Vice President and Director, New Century-         1997-1998
                             Cadence, Inc.
                           Director, Cheyenne Light, Fuel and Power Company            1997-Present
                           Director, Southwestern Public Service Company, Quixx Power  1995-Present
                             Services,  Inc., Utility Engineering  Corporation and
                             Quixx Corporation
                           President and Chief Operating Officer, Southwestern         1995-Present
                             Public Service Company
                           Senior Vice President, Southwestern Public Service          1991-1995
                             Company
                           Director, WestGas InterState, Inc. and Young Gas Storage    1998-Present
                             Company
                           Vice President and Director, New Century Energies           1998-Present
                              Foundation
Cathy J. Hart (f)    49    Secretary                                                   1998-Present
                           Secretary, 1480 Welton, Inc., Cheyenne Light, Fuel and      1998-Present
                              Power Company, Cogeneration Capital Associates
                              Incorporated, Green and Clear Lakes Company, NC
                              Enterprises, Inc., New Century International, Inc.,
                              New Century Services, Inc., New Century-Cadence,
                              Inc., New Century-Centrus, Inc., PSR Investments,
                              Inc., PS Colorado  Credit  Corporation, Planergy
                             (Delaware), Inc., Planergy Energy Services Corporation,
                              Planergy Limited,  Planergy New York, Inc., Planergy
                              Power II, Inc., Planergy Services USA, Inc., Planergy
                              Services of California, Inc., Planergy Services of
                              Houston,I nc., Planergy Services of Texas, Inc.,
                              Planergy Services, Inc., Planergy, Inc.,

                                      131
<PAGE>

                              Public Service Company of Colorado, Texas-Ohio Gas,
                              Inc., Texas-Ohio Pipeline, Inc., The Planergy Group,
                              Inc., WestGas InterState, Inc., Young Gas Storage
                              Company and e prime, inc.
                            Assistant Secretary, Southwestern Public Service Company   1998-Present
                            Manager, Corporate Communications, Public Service Company  1993-1996
                              of Colorado
Tom Petillo (g)      54     Executive Vice President, New Century Services, Inc.       1998-Present
                            President and Director, New Century International,Inc.     1997-1998
                            Executive Vice  President,  Public  Service  Company of
                              Colorado and Southwestern Public Service Company         1998-Present
                            Chairman of the Board and Director, Planergy Limited       1998-Present
                            Senior Vice President and Director,  Planergy New York,    1998-Present
                              Inc. and Planergy, Inc.
                            Vice President and Director, Cogeneration Capital          1998-Present
                              Associates Incorporated, New Century-Centrus, Inc.,
                              Planergy (Delaware), Inc., Planergy Energy Services
                              Corporation, Planergy Services USA, Inc., Planergy
                              Services of California, Inc., Planergy Services of
                              Houston,  Inc., Planergy Services of Texas, Inc. 
                              and Planergy Services, Inc.
                            President  and  Director,  Planergy  Power II, Inc. and    1998-Present
                              The Planergy Group, Inc.
                            Executive Vice President and Director, New Century-        1998-Present
                              Cadence, Inc.
Henry H. Hamilton    60     Executive Vice President and Director, Southwestern        1997-Present
                              Public Service Company, Public Service Company of
                              Colorado and New Century Services, Inc.
                            Vice President of Production, Southwestern Public Service  1987-1997
                              Company
                            Director, Quixx Power Services, Inc.                       1993-Present
                            Chairman of the Board and President and Director,          1998-Present
                              KES Montego, Inc., Quixx Borger Cogen, Inc.,
                              Quixx Carolina, Inc., Quixx Jamaica, Inc.,
                              Quixx Mustang Station, Inc., Quixx WPP94, Inc.
                               and Quixxlin Corp.
                            President, CEO, COO and Director, Quixx Corporation        1998-Present
                            President and CEO, Quixx Power Services, Inc.              1998-Present
                            Director, Utility Engineering Corporation                  1998-Present
                            CEO, Borger Funding Corporation                            1998-Present
</TABLE>

      There are no family relationships  between executive officers or directors
of the  registrants.  There are no  arrangements or  understandings  between the
executive  officers  individually  and any other person with  reference to their
being selected as officers of each  registrant.  All executive  officers of each
registrant are elected annually by the respective Board of Directors.

(a)Mr. Brunetti was President and Chief Executive Officer of Management  Systems
   International  from June 1991 through July 1994 and Executive  Vice President
   of Florida Power & Light Company from 1987 through May 1991.
(b)Mr. Bonavia was Of Counsel at LeBoeuf,  Lamb, Greene & MacRae, LLP from March
   1997 through  December 1997 and Senior Vice President at Dominion  Resources,
   Inc. from 1991 through February 1997.
(c)Mr.  Jackson was named  Treasurer  of New Century  Energies,  Inc.  effective
   January 1, 1999.  Mr.  Jackson was employed by Arthur  Andersen LLP from 1980
   through November 1997. He was a partner with the firm from 1994 through 1997.


                                      132
<PAGE>

(d)Mr.  Kelly is  Chairman  of the audit  committee  and a member of the finance
   committee of Yorkshire Electricity Group plc.
(e)Mr.  Steinhelper  was named Vice  President  of Quixx  Corporation  effective
   January 1, 1999,  and  subsequently  resigned  as  Treasurer  of New  Century
   Energies, Inc. and certain other subsidiary positions.
(f)Ms.  Hart was  self-employed  as  communications  and  marketing  consultant,
   Sydney, Australia and Denver, Colorado from June 1996 through June 1998.
(g)Mr. Petillo was Director and President,  Qualtec Quality Services,  Inc. from
   August 1992 through October 1995 and Senior Vice President of Florida Power &
   Light Company from June 1991 through December 1995.

Item 11.  Executive Compensation

      Information  concerning executive  compensation for NCE is contained under
COMPENSATION  OF  EXECUTIVE  OFFICERS  AND  DIRECTORS  in  the  NCE  1999  Proxy
Statement,  which information is incorporated  herein by reference.  Information
concerning executive  compensation for PSCo and SPS has been omitted pursuant to
General Instruction I(2)(c).

Item 12.  Security Ownership of Certain Beneficial Owners and Management

      Information  concerning  the  security  ownership  of  the  directors  and
officers of NCE is  contained  under  ELECTION OF  DIRECTORS in NCE's 1999 Proxy
Statement,  which information is incorporated  herein by reference.  Information
concerning the security  ownership of the directors and officers of PSCo and SPS
is omitted pursuant to General Instruction I(2)(c).

Item 13.  Certain Relationships and Related Transactions

      Information  concerning  relationships  and  related  transactions  of the
directors  and  officers of NCE is contained  under  CERTAIN  RELATIONSHIPS  AND
RELATED  TRANSACTIONS  in NCE's  1999  Proxy  Statement,  which  information  is
incorporated  herein by reference.  PSCo and SPS have no information  concerning
relationships and related transactions required to be disclosed.

                                   PART IV

Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a)   Financial Statements, Financial Statement Schedules, and Exhibits:

   (1)Financial  Statements and Reports of Independent  Public  Accountants on
      the financial statements for NCE,
      PSCo and SPS are listed under Item 8 herein.

   (2)Financial Statement Schedules.
      Reports of  Independent  Public  Accountants as to Schedules for NCE, PSCo
      and SPS are included in the Reports of Independent  Public Accountants for
      each registrant.

   (3)Exhibits.
      Exhibits for NCE, PSCo and SPS are listed in Index to Exhibits below.

(b) Reports on Form 8-K:

     The following reports on Form 8-K were filed since the end of the third 
quarter of 1998:

     - A combined report on Form 8-K dated February 23, 1999, was filed 
       separately by NCE, PSCo and SPS on February 23, 1999.
       The item reported was Item 5. Other Events: Filing of audited financial
       statements of NCE and its subsidiaries, PSco and its subsidiaries and SPS
       for the year ended December 31, 1998.

                                      133
<PAGE>

     - A report on Form 8-K dated February 25, 1999, was filed by SPS on 
       February 25, 1999.
       The item reported was Item 5. Other Events:  filing of consent of Arthur
       Andersen LLP  and Letter on unaudited financial information of Arthur 
       Andersen LLP.

     - A report on Form 8-K dated February 25, 1999, was filed by SPS on March
       9, 1999.
       The item reported was Item 5. Other Events: Filing of Purchase Agreement.
       the Indenture and the First Supplemental Indenture realted to the sale of
       Series A Senior Notes.

     - A report on Form 8-K dated March 24, 1999, was filed by NCE on March 24,
       1999.
       The item reported was Item 5. Other Events: Filing of an Agreement and 
       Plan of Merger dated March 24, 1999, between New Century Energies, Inc.
       and Northern States Power Company and a joint press release announcing
       the proposed merger.

     - A report of Form 8-K dated March 26, 1999 was filed by NCE on March 26,
       1999.
       The item reported was Item 5. Other Events: Filing of slide presentation
       for joint meeting, NCE and Northern State Power Company held with 
       financial analysts.


                                      134
<PAGE>


                                   EXPERTS

      The  consolidated  balance  sheets of New Century  Energies,  Inc. and its
subsidiaries  as of  December  31,  1998  and  1997,  the  related  consolidated
statements of income,  shareholders' equity and cash flows for each of the three
years in the period ended December 31, 1998, and the related financial statement
schedule,  appearing  in this Annual  Report on Form 10-K,  have been audited by
Arthur  Andersen  LLP,  independent  public  accountants,  as set forth in their
report  appearing  elsewhere  herein.  Arthur  Andersen  LLP did not  audit  the
consolidated financial statements of Southwestern Public Service Company for the
year ended December 31, 1996, included in the consolidated  financial statements
of  New  Century  Energies,   Inc.,  which  statements  reflect  total  revenues
constituting 31% in 1996, of the related  consolidated  totals. The consolidated
financial  statements and the related financial  statement  schedule,  which are
included in this Annual  Report on Form 10-K,  are  included  herein in reliance
upon the authority of said firm as experts in giving said report.

      The consolidated balance sheets and statements of capitalization of Public
Service  Company of Colorado  and its  subsidiaries  as of December 31, 1998 and
1997, the related  consolidated  statements of income,  shareholder's equity and
cash flows for each of the three years in the period  ended  December  31, 1998,
and the related financial statement schedule, appearing in this Annual Report on
Form  10-K,  have  been  audited  by Arthur  Andersen  LLP,  independent  public
accountants,  as set  forth in their  report  appearing  elsewhere  herein.  The
consolidated  financial statements and the related financial statement schedule,
which are included in this Annual  Report on Form 10-K,  are included  herein in
reliance upon the authority of said firm as experts in giving said report.

      The balance sheets and statements of capitalization of Southwestern Public
Service  Company as of December  31, 1998 and 1997,  the related  statements  of
income,  shareholder's  equity  and cash  flows for each of the two years in the
period ended December 31, 1998, and the related  financial  statement  schedule,
appearing  in this  Annual  Report on Form  10-K,  have been  audited  by Arthur
Andersen  LLP,  independent  public  accountants,  as set forth in their  report
appearing  elsewhere herein. The financial  statements and the related financial
statement  schedule,  which are included in this Annual Report on Form 10-K, are
included herein in reliance upon the authority of said firm as experts in giving
said report.


                                      135
<PAGE>


                                                                EXHIBIT 23 (a)

                  CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

      As independent public accountants,  we hereby consent to the incorporation
by  reference  of our  report  included  in this  Form  10-K,  into New  Century
Energies,  Inc.'s  previously filed  Registration  Statement (Form S-8, File No.
333-28639)  pertaining  to the Omnibus  Incentive  Plan;  New Century  Energies,
Inc.'s Registration  Statement (Form S-3, File No. 333-28637)  pertaining to the
Dividend  Reinvestment  and Cash  Payment  Plan;  New Century  Energies,  Inc.'s
Registration  Statement (Form S-3, File Nos. 333-40361 and 333-6407)  pertaining
to the  registration  of NCE  Common  Stock  and New  Century  Energies,  Inc.'s
Registration  Statement  (Form S-8,  File No.  333-58117)  pertaining to the NCE
Employee Investment Plan and NCE Employees' Savings and Stock Ownership Plan and
to all references to our Firm included in this Form 10-K.

      As independent public accountants,  we hereby consent to the incorporation
by  reference  of our report  included in this Form 10-K,  into  Public  Service
Company of Colorado's  previously filed  Registration  Statement (Form S-3, File
No. 33-62233) pertaining to the Automatic Dividend Reinvestment and Common Stock
Purchase Plan; Public Service Company of Colorado's 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;
Public Service Company of Colorado's  Registration Statement (Form S-8, File No.
33-55432)  pertaining to the Omnibus  Incentive Plan;  Public Service Company of
Colorado's  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 and Public  Service  Company of  Colorado's  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 to all references to our Firm included in this Form 10-K.

      As independent public accountants,  we hereby consent to the incorporation
by reference of our report included in this Form 10-K, into Southwestern  Public
Service Company's  previously filed  Registration  Statement (Form S-3, File No.
333-05199)  pertaining to Southwestern  Public Service Company's Preferred Stock
and  Debt  Securities;   Southwestern  Public  Service  Company's   Registration
Statement  (Form S-8,  File No.  33-27452)  pertaining  to  Southwestern  Public
Service  Company's  1989 Stock  Incentive Plan and  Southwestern  Public Service
Company's  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 and to all  references  to our Firm included in this Form
10-K.


                                                         ARTHUR ANDERSEN LLP

Denver, Colorado
March 29, 1999



                                      136
<PAGE>


                                                                EXHIBIT 23 (b)
                  CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

We consent to the  incorporation  by reference in  Registration  Statement No.
333-05199 on Form S-3 and  Registration  Statements No.  33-27452 and 33-57869
on Form S-8 of Southwestern Public Service Company and Registration  Statement
No.  333-28637  and  333-40361  on Form  S-3 and  Registration  Statement  No.
333-28639  on Form S-8 of New  Century  Energies,  Inc.  of our  report  dated
February  28,  1997  (June  19,  1997,  as  to  the  Carolina  Energy  Limited
Partnership in Note 3) on Southwestern  Public Service  Company,  appearing in
the Annual  Report on Form 10-K of New  Century  Energies,  Inc.  for the year
ended December 31, 1998.


                                                DELOITTE & TOUCHE  LLP
Dallas, Texas
March 29, 1999










                                                                   EXHIBIT 24
                               POWER OF ATTORNEY

      Each  director  and/or  officer  of  New  Century  Energies,  Inc.,  whose
signature  appears  herein hereby  appoints Bill D. Helton and Richard C. Kelly,
and each of them  severally,  and each director and/or officer of Public Service
Company of Colorado and  Southwestern  Public Service  Company,  whose signature
appears herein hereby appoints Wayne H. Brunetti and Brian P. Jackson,  and each
of them severally, as his or her attorney-in-fact to sign in his or her name and
behalf, in any and all capacities stated herein, and to file with the Securities
and Exchange  Commission,  any and all  amendments to this Annual Report on Form
10-K.


                                      137
<PAGE>



                          NEW CENTURY ENERGIES, INC.
                                  SIGNATURES

      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
23rd day of February, 1999.

                                          NEW CENTURY ENERGIES, INC.

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


      Pursuant to the requirements of the Securities  Exchange Act of 1934, this
report has been signed below by the  following  persons on behalf of New Century
Energies, Inc. and in the capacities and on the date indicated.


   Signature                      Title                          Date
- --------------------------------------------------------------------------------


/s/Bill D. Helton
____________________________   Principal Executive           March 24, 1999
Bill D. Helton                 Officer and Director
Chairman of the Board and
Chief Executive Officer


/s/Richard C. Kelly
_____________________________  Principal                     March 24, 1999
Richard C. Kelly               Financial Officer 
Executive Vice President and
Chief Financial Officer


/s/Teresa S. Madden
_____________________________  Principal Accounting Officer  March 24, 1999
Teresa S. Madden
Controller


                                      138
<PAGE>



   Signature                            Title                    Date
- --------------------------------------------------------------------------------

/s/Bill D. Helton
__________________________________  Chairman of the Board      March 24, 1999
Bill D. Helton                      and Director

/s/ Wayne H. Brunetti
__________________________________  Vice Chairman and
Wayne H. Brunetti                   Director                   March 24, 1999

/s/C. Coney Burgess
__________________________________  Director                   March 24, 1999
C. Coney Burgess

/s/ Danny H. Conklin
__________________________________  Director                   March 24, 1999
Danny H. Conklin

/s/Giles M. Forbess
__________________________________  Director                   March 24, 1999
Giles M. Forbess

/s/Gayle L. Greer
__________________________________  Director                   March 24, 1999
Gayle L. Greer

/s/R. R. Hemminghaus
__________________________________  Director                   March 24, 1999
R. R. Hemminghaus

/s/A. Barry Hirschfeld
__________________________________  Director                   March 24, 1999
A. Barry Hirschfeld

/s/ J. Howard Mock
__________________________________  Director                   March 24, 1999
J. Howard Mock

/s/ Albert F. Moreno
__________________________________  Director                   March 24, 1999
Albert F. Moreno

/s/ Will F. Nicholson, Jr.
__________________________________  Director                   March 24, 1999
Will F. Nicholson, Jr.

/s/J. Michael Powers
__________________________________  Director                   March 24, 1999
J. Michael Powers

/s/Rodney E. Slifer
__________________________________  Director                   March 24, 1999
Rodney E. Slifer

                                      139
<PAGE>



   Signature                            Title                    Date
- --------------------------------------------------------------------------------

/s/W. Thomas Stephens
__________________________________  Director                   March 24, 1999
W. Thomas Stephens

/s/Robert G. Tointon
__________________________________  Director                   March 24, 1999
Robert G. Tointon

                                      140
<PAGE>


                      PUBLIC SERVICE COMPANY OF COLORADO
                                  SIGNATURES

      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 23td day of February, 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


      Pursuant to the requirements of the Securities  Exchange Act of 1934, this
report  has been  signed  below by the  following  persons  on  behalf of Public
Service Company of Colorado and in the capacities and on the date indicated.


   Signature                      Title                          Date
- --------------------------------------------------------------------------------


/s/Wayne H. Brunetti
__________________________     Principal Executive           March 24, 1999
Wayne H. Brunetti              Officer and Director
Vice Chairman, President and
Chief Executive Officer


/s/Brian P. Jackson
__________________________     Principal Financial Officer   March 24, 1999
Brian P. Jackson               and Director
Senior Vice President, Finance
and Administrative Services,
Chief Financial
Officer and Treasurer


/s/Teresa S. Madden
__________________________     Principal Accounting Officer  March 24, 1999
Teresa S. Madden
Controller


                                      141
<PAGE>



   Signature                            Title                    Date
- --------------------------------------------------------------------------------

/s/ Bill. D. Helton
__________________________________  Director                   March 24, 1999
Bill. D. Helton

/s/Henry H. Hamilton
__________________________________  Director                   March 24, 1999
Henry H. Hamilton

/s/ Richard C. Kelly
__________________________________  Director                   March 24, 1999
Richard C. Kelly

/s/David M. Wilks
__________________________________  Director                   March 24, 1999
David M. Wilks


                                      142
<PAGE>


                     SOUTHWESTERN PUBLIC SERVICE COMPANY
                                  SIGNATURES

      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 23rd day of February, 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


      Pursuant to the requirements of the Securities  Exchange Act of 1934, this
report has been signed below by the following  persons on behalf of Southwestern
Public Service Company and in the capacities and on the date indicated.


   Signature                      Title                          Date
- --------------------------------------------------------------------------------


/s/Wayne H. Brunetti
___________________________    Principal Executive           March 24, 1999
Wayne H. Brunetti              Officer and Director
Vice Chairman and
Chief Executive Officer


/s/Brian P. Jackson
___________________________    Principal Financial Officer   March 24, 1999
Brian P. Jackson
Senior Vice President, Finance
and Administrative Services,
Chief Financial
Officer  and Treasurer


/s/Teresa S. Madden
___________________________    Principal Accounting Officer  March 24, 1999
Teresa S. Madden
Controller

                                      143
<PAGE>



   Signature                            Title                    Date
- --------------------------------------------------------------------------------

/s/Bill. D. Helton
__________________________________  Director                   March 24, 1999
Bill. D. Helton

/s/Henry H. Hamilton
__________________________________  Director                   March 24, 1999
Henry H. Hamilton

/s/ Richard C. Kelly
__________________________________  Director                   March 24, 1999
Richard C. Kelly

/s/David M. Wilks
__________________________________  Director                   March 24, 1999
David M. Wilks


                                      144
<PAGE>


                                 EXHIBIT INDEX

2  Plan  of   Acquisition,   Reorganization,   Arrangement,   Liquidation   or
Succession
NCE
2(a)1* Agreement and Plan of Merger dated March 24, 1999 (Form 8-K, March 24,
       1999, Exhibit 2.1).

2(a)2* Merger  Agreement  and Plan of  Reorganization  dated August 22, 1995
       (Form S-4, Annex I, File No. 33-64951).
PSCo
2(a)1* Merger  Agreement  and Plan of  Reorganization  dated August 22, 1995
       (Form 8-K, dated August 22, 1995, File No. 1-3280 - Exhibit 2).
SPS
2(a)1* Agreement and Plan of Reorganization dated August 22, 1995 (Form 8-K,
       Exhibit 2, dated August 22, 1995).

3 (i)  Articles of Incorporation
NCE
3(a)1* Restated  Articles of  Incorporation  dated  December 8, 1995 (Form S-4,
        Exhibit 3(a)).

PSCo
3(a)1  Amended and Restated Articles of Incorporation dated July 10, 1998.

SPS
3(a)2* Amended and Restated  Articles of  Incorporation  dated September 30,
        1997.

3 (ii)  By-Laws
NCE
3(b)1  Restated By-laws dated December 15, 1998.

PSCo
3(b)1* By-laws dated November 20, 1997.

SPS
3(b)2* By-laws dated September 29, 1997.

4 Instruments Defining the Rights of Security Holders,  Including Indentures
NCE
4(a)1* Rights Agreement, dated as of August 1, 1997, between New Century
       Energies,  Inc.  and the Bank of New York,  as Rights Agent (Form 8-K,
       August 1, 1997-Exhibit 1).
4(a)2* Amendment as of March 24, 1999 to  the  Rights   Agreement, dated as of 
       August 1, 1997, between New Century Energies, Inc.  and the Bank of New
       York (Form 8-K, March 24, 1999, Exhibit 99.2)

PSCo
4(a)1* Indenture,  dated as of December 1, 1939,  providing for the issuance
       of First Mortgage Bonds (Form 10 for 1946- Exhibit (B-1)).

4(a)2* Indentures supplemental to Indenture dated as of December 1, 1939:

                 Previous Filing:                   Previous Filing:
                   Form; Date orExhibit               Form; Date or   Exhibit
       Dated as of   File No.     No.    Dated as of    File No.        No.

      Mar. 14, 1941  10, 1946     B-2   Sept. 1, 19708-K, Sept. 1970     2
      May 14, 1941   10, 1946     B-3   Feb. 1, 1971 8-K, Feb. 1971      2
      Apr. 28, 1942  10, 1946     B-4   Aug. 1, 1972 8-K, Aug. 1972      2
      Apr. 14, 1943  10, 1946     B-5   June 1, 1973 8-K, June 1973      1

                                      145
<PAGE>

      Apr. 27, 1944  10, 1946     B-6   Mar. 1, 1974 8-K, Apr. 1974      2
      Apr. 18, 1945  10, 1946     B-7   Dec. 1, 1974 8-K, Dec. 1974      1
      Apr. 23, 1946 10-K, 1946    B-8   Oct. 1, 1975 S-7, (2-60082)   2(b)(3)
      Apr. 9, 1947  10-K, 1946    B-9   Apr. 28, 1976S-7, (2-60082)   2(b)(4)
      June 1, 1947 S-1, (2-7075) 7(b)   Apr. 28, 1977S-7, (2-60082)   2(b)(5)
      Apr. 1, 1948 S-1, (2-7671)7(b)(1) Nov. 1, 1977 S-7, (2-62415)   2(b)(3)
      May 20, 1948 S-1, (2-7671)7(b)(2) Apr. 28, 1978S-7, (2-62415)   2(b)(4)
      Oct. 1, 1948  10-K, 1948     4    Oct. 1, 1978   10-K, 1978      D(1)
      Apr. 20, 1949 10-K, 1949     1    Oct. 1, 1979 S-7, (2-66484)   2(b)(3)
      Apr. 24, 19508-K, Apr. 1950  1    Mar. 1, 1980   10-K, 1980      4(c)
      Apr. 18, 19518-K, Apr. 1951  1    Apr. 28, 1981S-16, (2-74923)   4(c)
      Oct. 1, 19518-K, Nov. 1951   1    Nov. 1, 1981 S-16, (2-74923)   4(d)
      Apr. 21, 19528-K, Apr. 1952  1    Dec. 1, 1981   10-K, 1981      4(c)
      Dec. 1, 1952S-9, (2-11120)2(b)(9) Apr. 29, 1982  10-K, 1982      4(c)
      Apr. 15, 19538-K, Apr. 1953  2    May 1, 1983   10-K, 1983      4(c)
      Apr. 19, 19548-K, Apr. 1954  1    Apr. 30, 1984S-3, (2-95814)    4(c)
      Oct. 1, 19548-K, Oct. 1954   1    Mar. 1, 1985   10-K, 1985      4(c)
      Apr. 18, 19558-K, Apr. 1955  1    Nov. 1, 1986   10-K, 1986      4(c)
      Apr. 24, 1956 10-K, 1956     1    May 1, 1987   10-K, 1987      4(c)
      May 1, 1957S-9, (2-13260)2(b)(15) July 1, 1990 S-3, (33-37431)   4(c)
      Apr. 10, 19588-K, Apr. 1958  1    Dec. 1, 1990   10-K, 1990      4(c)
      May 1, 1959 8-K, May 1959   2     Mar. 1, 1992   10-K, 1992      4(d)
      Apr. 18, 19608-K, Apr. 1960  1    Apr. 1, 199310-Q, June 30, 19934(a)
      Apr. 19, 19618-K, Apr. 1961  1    June 1, 199310-Q, June 30, 19934(b)
      Oct. 1, 19618-K, Oct. 1961   2    Nov. 1, 1993 S-3, (33-51167)  4(a)(3)
      Mar. 1, 19628-K, Mar. 1962 3(a)   Jan. 1, 1994   10-K, 1993     4(a)(3)
      June 1, 19648-K, June 1964   1    Sept. 2, 19948-K, Sept. 1994   4(a)
      May 1, 1966 8-K, May 1966   2     May 1, 199610Q, June 30, 1996 4(a)
      July 1, 19678-K, July 1967   2    Nov. 1, 1996   10-K, 1996     4(a)(3)
      July 1, 19688-K, July 1968   2    Feb. 1, 199710-Q, Mar. 31, 19974(a)
      Apr. 25, 19698-K, Apr. 1969  1    April 1, 199810-Q, Mar. 31, 19984(a)
      Apr. 21, 19708-K, Apr. 1970  1

4(b)1*  Indenture,  dated  as of  October  1,  1993,  providing  for the
        issuance of First Collateral Trust Bonds
        (Form 10-Q, September 30, 1993 - Exhibit 4(a)).

4(b)2*  Indentures supplemental to Indenture dated as of October 1, 1993:

                              Previous Filing:
                                Form; Date or          Exhibit
        Dated as of              File No.             No.
        -----------              --------            ---

        November 1, 1993     S-3, (33-51167)           4(b)(2)
        January 1, 1994      10-K, 1993                4(b)(3)
        September 2, 1994    8-K, Sept. 1994           4(b)
        May 1, 1996          10-Q, June 30, 1996       4(b)
        November 1, 1996     10-K, 1996                4(b)(3)
        February 1, 1997     10-Q, Mar. 31, 1997       4(b)
        April 1, 1998        10-Q, Mar. 31, 1998       4(b)

4(c)1*  Indenture  date May 1, 1998,  between PSCo and The Bank of New York,
        providing for the issuance of Subordinated  Debt Securities  (Form 8-K,
        May 6, 1998 - Exhibit 4.2).

4(c)2*  Supplemental Indenture dated May 11, 1998, between PSCo and The Bank
        of New York, (Form 8-K, May 6, 1998 - Exhibit 4.3).

                                      146
<PAGE>

4(c)3*  Preferred Securities Guarantee Agreement dated May 11, 1998, between
        PSCo and The Bank of New York, (Form 8-K, May 6, 1998 - Exhibit 4.4).

4(c)4*  Amended and Restated  Declaration of Trust of PSCo Capital and Trust
        I date May 11, 1998, (Form 8-K, May 6, 1998 - Exhibit 4.1).

SPS
4(a)1*  Indenture, dated as of August 1, 1946, providing for the issuance of
        First Mortgage Bonds (Registration No. 2-6910, Exhibit 7-A).

4(a)2*  Indentures supplemental to Indenture dated as of August 1, 1946:

                              Previous Filing:
                                Form; Date or          Exhibit
        Dated as of              File No.             No.
        -----------              --------            ---

        February 1, 1967          2-25983            2-S
        October 1, 1970           2-38566            2-T
        February 9, 1977          2-58209            2-Y
        March 1, 1979             2-64022            b(28)
        April 1, 1983 (two)    10-Q, May 1983        4(a)
        February 1, 1985       10-K, Aug. 1985       4(c)
        July 15, 1992 (two)    10-K, Aug. 1992       4(a)
        December 1, 1992 (two) 10-Q, Feb. 1993       4
        February 15, 1995      10-Q, May 1995        4
        March 1, 1996            333-05199           4(c)

4(b)1*  Indenture dated February 1, 1999 between SPS and the Chase Manhattan 
        Bank (Form 8-K, February 25, 1999. Exhibit B).

4(b)2*  Supplemental Indenture dated March 1, 1999, between SPS and the Chase
        Manhattan Bank (Form 8-K, February 25, 1999, Exhibit C).

4(c)1*  Standby Credit Agreement with Union Bank of Switzerland (Houston Agency)
        dated July 1, 1991 (Form 10-K, August 31, 1991 - Exhibit 4(a)).

4(d)1*  Red River  Authority  for Texas  Indenture  of Trust  dated July 1, 1991
        (Form 10-K, August 31, 1991 - Exhibit 4(b)).

4(e)1*  Indenture  dated  October 21,  1996,  between SPS and  Wilmington  Trust
        Company, (Form 10-Q, November 30, 1996 - Exhibit 4(a)).

4(f)1*  Supplemental  Indenture  dated  October  21,  1996,  between  SPS  and
        Wilmington Trust Company, (Form 10-Q, November 30, 1996 - Exhibit 4(b)).

4(g)1*  Guarantee  Agreement dated October 21, 1996,  between SPS and Wilmington
        Trust Company, (Form 10-Q, November 30, 1996 - Exhibit 4(c)).

4(h)1*  Amended and Restated Trust Agreement dated October 21, 1996,  among SPS,
        David  M.  Wilks,  as  initial  depositor,  Wilmington  Trust  Company 
        and  the administrative  trustees  named  therein  (Form 10- Q, November
        30, 1996 Exhibit 4(d)).

4(i)1*  Agreement  as to  Expenses  dated  October  21,  1996,  between SPS and
        Southwestern Public Service Capital I, (Form 10-K, December 31, 1996
        Exhibit F).

                                      147
<PAGE>

10 Material Contracts
NCE
10(a)1  Form of Key Executive Change in Control Agreement.

10(b)1*+ Employment Agreement, effective August 1, 1997, between the Company
         and Mr. Bill D. Helton (Form S-4, Annex I, File No.
         33-64951).

10(b)2*+ Employment Agreement, effective August 1, 1997, between the Company
         and Mr. Wayne H. Brunetti (Form S-4, Annex I, File No.
         33-64951).

10(b)3*+ Employment Agreement,  effective December 15, 1997, between company
         and Mr. Paul J. Bonavia (Form 10Q, September 30, 1998 - Exhibit 10(a)).

10(c)1*+ Omnibus  Incentive  Plan,  effective  August 1, 1997 (Form Def 14A,
         December 31, 1997 - Exhibit A)

10(d)1+  Directors' Voluntary Deferral Plan

10(e)1+  Supplemental Executive Retirement Plan

10(f)1+  Salary Deferral and Supplemental Savings Plan for Executive Officers

10(g)1+  Salary Deferral and Supplemental Savings Plan for Key Managers

PSCo
10(a)1*  Settlement  Agreement dated February 9, 1996 between the Company and
         the United States Department of Energy (Form 10-K,  December 31, 1995 -
         Exhibit 10(a)(1)).

10(a)2*  Settlement  Agreement dated June 27, 1979 between the Registrant and
         General Atomic Company (Form S-7, File No. 2-66484 - Exhibit 5(a)(1)).

10(a)3*  Services  Agreement  executed  June 27,  1979 and  effective  as of
         January 1, 1979 between the Registrant and General Atomic Company (Form
         S-7, File No. 2-66484 - Exhibit 5(a)(3)).

10(b)1*  Amended and Restated Coal Supply  Agreement  entered into October 1,
         1984 but made  effective as of January 1, 1976  between the  Registrant
         and Amax Inc. on behalf of its division,  Amax Coal Company (Form 10-K,
         December 31, 1984 - Exhibit 10(c)(1)).

10(b)2*  First  Amendment  to Amended and Restated  Coal Supply  Agreement
         entered into May 27, 1988 but
         made  effective  January 1, 1988 between the  Registrant  and Amax Coal
         Company (Form 10-K, December 31, 1988-Exhibit 10(c)(2).**

10(c)1*+ Supplemental   Executive   Retirement  Plan  for  Key  Management
         Employees,  as amended and restated March 26, 1991 (Form 10-K, December
         31, 1991 - Exhibit 10(e)(2)).

10(c)2*+ Executive  Savings  Plan (Form 10-K,  December  31, 1991 - Exhibit
         10(e)(5)).

10(c)3*+ Form of Key Executive Severance Agreement, as amended on August 22,
         and  November  27,  1995.  (Form  10-K,  December  31,  1995 -  Exhibit
         10(3)(4)).

SPS
10(a)1*  Coal Supply  Agreement  (Harrington  Station)  between SPS and TUCO,
         dated May 1, 1979 (Form 8-K, May 14, 1979 - Exhibit 3).

10(b)1*  Master  Coal  Service  Agreement  between  Swindell-Dressler  Energy
         Supply  Company and TUCO,  dated July 1, 1978 (Form 8-K, May 14, 1979 -
         Exhibit 5(A)).

                                      148
<PAGE>

10(c)1*  Guaranty of Master Coal Service Agreement between  Swindell-Dressler
         Energy Supply Company and TUCO (Form 8-K, May 14, 1979 - Exhibit 5(B)).

10(d)1*  Coal  Supply  Agreement  (Tolk  Station)  between SPS and TUCO dated
         April 30, 1979, as amended November 1, 1979 and December 30, 1981 (Form
         10-Q, February 28, 1982 - Exhibit 10(b)).

10(e)1*  Master Coal Service Agreement between Wheelabrator Coal Services Co.
         and TUCO dated  December  30,  1981,  as amended  November  1, 1979 and
         December 30, 1981 (Form 10-Q, February 28, 1982 - Exhibit 10(c)).

10(f)1*+ Incentive  Compensation  Plan (an  Executive  Management  Plan) as
         amended July 23, 1996 (Form 10-K, August 31, 1996 - Exhibit 10(a)).

10(g)1*+ 1989 Stock  Incentive  Plan as amended  April 23, 1996 (Form 10-K,
         August 31, 1996 - Exhibit 10(b)).

10(h)1*+ Director's  Deferred  Compensation Plan as amended January 10, 1990
         (Form 10-K, August 31, 1996 - Exhibit 10(c)).

10(i)1*+ Supplemental  Retirement Income Plan as amended July 23, 1991 (Form
         10-K, August 31, 1996 - Exhibit 10(e)).

10(j)1*+ EPS  Performance  Unit Plan dated October 27, 1992 (Form 10-K,  August
          31, 1996 - Exhibit 10(a)).

12       Statement Re Computation of Ratios
12(a)    PSCo  Computation  of Ratio of  Consolidated  Earnings to  Consolidated
         Fixed Charges is set forth at page 125 herein.

12(b)    SPS Computation of Ratio of Consolidated Earnings to Consolidated Fixed
         Charges is set forth at page 126 herein.

21       Subsidiaries of the Registrants

23(a)    Consent of Arthur Andersen LLP is set forth at page 136 herein.

23(b)    Consent of Deloitte & Touche LLP is set forth at page 137 herein.

24       Power of Attorney is set forth at page 137 herein.

27       Financial Data Schedule UT
27(a)    Financial Data Schedule for NCE as of December 31, 1998

27(b)    Financial Data Schedule for PSCo as of December 31, 1998

27(c)    Financial Data Schedule for SPS as of December 31, 1998
- --------------

*   Previously filed as indicated and incorporated herein by reference.
+   Management contracts of compensatory plans or arrangements.


                                      149




                                                                     EXHIBIT 21

                                 SUBSIDIARIES OF
                            NEW CENTURY ENERGIES, INC
                             As of December 31, 1998

      Subsidiary                                      State of Incorporation

1.    Public Service Company of Colorado                      Colorado
2.    Southwestern Public Service Company                    New Mexico
3.    Cheyenne Light, Fuel and Power Company                   Wyoming
4.    WestGas InterState, Inc.                                Colorado
5.    New Century Services, Inc.                              Delaware
6.    NC Enterprises, Inc.                                    Delaware


                                 SUBSIDIARIES OF
                       PUBLIC SERVICE COMPANY OF COLORADO
                             As of December 31, 1998

      Subsidiary                                      State of Incorporation

1.    1480 Welton, Inc.                                       Colorado
2.    PSR Investments, Inc.                                   Colorado
3.    PS Colorado Credit Corporation                          Colorado
4.    Green and Clear Lakes Company                           New York
5.    Fuel Resources Development Co.
      (a dissolved Colorado corporation)                      Colorado




                                                                 Exhibit 3(a)1

                              AMENDED AND RESTATED
                            ARTICLES OF INCORPORATION
                                       OF
                       PUBLIC SERVICE COMPANY OF COLORADO


      Public  Service  Company  of  Colorado,   a  Colorado   corporation   (the
"Corporation"), pursuant to sections 7-110-106 and 107 of the Colorado  Business
Corporation  Act (the "Act"),  hereby adopts the following  amended and restated
Articles of Incorporation:

     1.   Name.  The name of the  Corporation  is:  Public  Service  Company  of
Colorado

     2.   Purpose.  The  nature,  objects  and  purposes  of the  business to be
transacted  by the  Corporation  shall  be to  engage  in  any  lawful activity
for which corporations may be organized under the Act. The Corporation shall 
have and may exercise all of the rights, powers and privileges  now or hereafter
exercisable by corporations organized under the laws of Colorado.  In  addition,
the Corporation may do everything necessary, suitable, convenient or proper  for
the accomplishment of any of its corporate purposes.

      3.  Stock.  The  total  number  of  shares  of  capital  stock  which  the
Corporation  is  authorized  to issue is ten million  one hundred  (10,000,100),
consisting  of one hundred  (100) shares of common  stock,  one cent ($0.01) par
value  per  share  ("Common  Stock"),  and ten  million  (10,000,000)  shares of
preferred stock, one cent ($0.01) par value per share ("Preferred Stock").

            1.  Preferred  Stock.  The Board of Directors of the  Corporation is
      expressly granted the authority,  by one or more appropriate  filings with
      the  Colorado  Secretary  of  State  pursuant  to the Act,  to  issue  the
      Preferred  Stock in one or more  classes or series,  and to fix, by one or
      more   resolutions   from  time  to  time,  the  number  of  shares,   the
      designations,  powers,  preferences  and rights,  and the  qualifications,
      limitations and restrictions,  of such classes and series of the Preferred
      Stock.  Each share of Preferred Stock of any one series shall be identical
      to each other share of that series,  except as to the dates from and after
      which dividends thereon shall cumulate (if cumulative).

            2. Common Stock. The holders of Common Stock shall have the right to
      vote for the election of directors and on all other matters submitted to a
      vote of the shareholders generally,  with each share entitled to one vote.
      Each share of Common  Stock  shall be equal to every other share of Common
      Stock for all purposes.  Subject to the prior rights and privileges of the
      holders  of  Preferred  Stock (if any),  upon the  voluntary liquidation, 
      dissolution or winding up of the Corporation,  the net assets of the
      Corporation  shall be  distributed  pro rata to the  holders of the Common
      Stock.

      4.  Partial  Liquidation.  The  Board of  Directors  may from time to time
distribute to the shareholders in partial liquidation,  out of stated capital or
capital  surplus  of the  Corporation,  a  portion  of its  assets,  in  cash or
property,  subject to the  limitations  contained  in the  statutes of Colorado.
Shareholders shall share in such distributions in accordance with the provisions
of Article 3 above.

      5. Election of Directors;  No  Cumulative  Voting.  The Board of Directors
shall  consist of one or more  members,  with the number  specified  or fixed in
accordance with the Bylaws of the Corporation. Members of the Board of Directors
may be elected either by written ballot or by voice vote.  The  shareholders  of
the  Corporation  shall not have  cumulative  voting  rights in the  election of
directors or with respect to any other matter.

      6. Indemnification. The Corporation shall indemnify, to the maximum extent
permitted by law, any person who is or was a director, officer, agent, fiduciary
or employee of the Corporation  against any



<PAGE>

claim,  liability  or expense  arising  against or  incurred by such person as a
result of actions  reasonably  taken by him at the direction of the Corporation.
The  Corporation  further  shall  have  the  authority,  to the  maximum  extent
permitted by law and its Bylaws, to indemnify its directors,  officers,  agents,
fiduciaries  and  employees  against  any claim,  liability  or expense  arising
against or incurred by them in all other circumstances and to maintain insurance
at the  Corporation's  expense  providing  for such  indemnification  (including
insurance  with  respect  to  claims,  liabilities  and  expenses  for which the
Corporation does not have the power to indemnify such persons).

      7. Limitation on Director's Liability. A director of the Corporation shall
not be personally  liable to the  Corporation or its  shareholders  for monetary
damages for breach of fiduciary duty as a director, except for liability (i) for
any  breach of the  director's  duty of  loyalty  to the  Corporation  or to its
shareholders,  (ii) for acts or  omissions  not in good  faith or which  involve
intentional  misconduct  or a knowing  violation  of law,  (iii) for a breach of
Colorado Revised Statutes sections.7-108-403,  or (iv) for any transaction from
which the director directly or indirectly derived an improper personal benefit.

      8.  Conflicting  Interest   Transactions.   As  used  in  this  paragraph,
"conflicting  interest  transaction"  means any of the following:  (i) a loan or
other  assistance by the  Corporation to a director of the  Corporation or to an
entity in which a director of the  Corporation is a director or officer or has a
financial  interest;  (ii) a guaranty by the  Corporation  of an obligation of a
director of the Corporation or of an obligation of an entity in which a director
of the  Corporation  is a director  or officer or has a financial  interest;  or
(iii) a contract or transaction  between the  Corporation  and a director of the
Corporation or between the  Corporation and an entity in which a director of the
Corporation is a director or officer or has a financial interest. No conflicting
interest  transaction shall be void or voidable,  be enjoined,  be set aside, or
give  rise to an award  of  damages  or other  sanctions  in a  proceeding  by a
shareholder  or by or in  the  right  of the  Corporation,  solely  because  the
conflicting  interest  transaction  involves a director of the Corporation or an
entity in which a director of the  Corporation is a director or officer or has a
financial interest, or solely because the director is present at or participates
in the meeting of the  Corporation's  Board of Directors or of the  committee of
the Board of  Directors  which  authorizes,  approves or ratifies a  conflicting
interest transaction,  or solely because the director's vote is counted for such
purpose,  if:  (A) the  material  facts  as to the  director's  relationship  or
interest and as to the  conflicting  interest  transaction  are disclosed or are
known to the Board of Directors or the committee,  and the Board of Directors or
committee  in good  faith  authorizes,  approves  or  ratifies  the  conflicting
interest  transaction by the affirmative vote of a majority of the disinterested
directors,  even though the  disinterested  directors are less than a quorum; or
(B) the material facts as to the director's  relationship  or interest and as to
the  conflicting  interest  transaction  are  disclosed  or  are  known  to  the
shareholders  entitled to vote thereon, and the conflicting interest transaction
is specifically authorized,  approved or ratified in good faith by a vote of the
shareholders;  or (C) a  conflicting  interest  transaction  is  fair  as to the
Corporation of the time it is  authorized,  approved or ratified by the Board of
Directors,  a  committee  thereof,  or the  shareholders.  Common or  interested
directors may be counted in determining the presence of a quorum at a meeting of
the Board of Directors or of a committee which authorizes,  approves or ratifies
the conflicting interest transaction.

      9. Loans and Guaranties for the Benefit of Directors. Neither the Board of
Directors nor any committee thereof shall authorize a loan by the Corporation to
a  director  of the  Corporation  or to an  entity  in which a  director  of the
Corporation is a director or officer or has a financial interest,  or a guaranty
by the  Corporation  of an obligation of a director of the  Corporation or of an
obligation of an entity in which a director of the  Corporation is a director or
officer  or has a  financial  interest,  until at least ten days  after  written
notice of the proposed  authorization  of the loan or guaranty has been given to
the  shareholders who would be entitled to vote thereon if the issue of the loan
or guaranty were submitted to a vote of the  shareholders.  The  requirements of
this Article 9 are in addition to, and not in  substitution  for, the provisions
of Article 8 above.

      10. Negation of Equitable  Interests in Shares or Rights.  Unless a person
is recognized as a shareholder through procedures established by the Corporation
pursuant to Colorado Revised Statute sections 7-107-204 or any similar law,  the
Corporation  shall be entitled to treat the  registered  holder of any shares of
the  Corporation  as the owner  thereof for all  purposes  permitted by the Act,
including  without  limitation  all rights  deriving  from such shares,  and the
Corporation  shall not be bound to recognize any equitable or

                                       2
<PAGE>

other claim to, or interest in, such shares or rights  deriving from such shares
on the part of any other  person,  including  without  limitation,  a purchaser,
assignee  or  pledgee of such  shares or of rights  deriving  from such  shares,
unless and until such purchaser,  assignee,  pledgee or other person becomes the
registered  holder of such shares or is recognized  as such,  whether or not the
Corporation  shall have either actual or constructive  notice of the interest of
such purchaser,  assignee, pledgee or other person. By way of example and not of
limitation,  no such  purchaser,  assignee,  pledgee  or other  person  shall be
entitled  to receive  notice of any  meetings of  shareholders,  to vote at such
meetings, to examine a list of shareholders,  to be paid dividends or other sums
payable to shareholders, or to own, enjoy and exercise any other rights deriving
from such shares,  until such purchaser,  assignee,  pledgee or other person has
become the registered holder of such shares or is recognized as such.

      11.  Registered  Office;  Registered  Agent.  The  street  address  of the
registered office of the Corporation is 1225 17th Street, 9th Floor,  Denver, CO
80202. The name of the registered agent at such address is Paul J. Bonavia.

      12.  Principal  Office.  The  address  of  the  principal  office  of  the
Corporation is 1225 17th Street, Denver, CO 80202.

      These  Amended and  Restated  Articles of  Incorporation  were  adopted by
unanimous  written  consent of the directors of the  Corporation  and by written
consent of the sole shareholder of the Corporation. The number of votes cast for
each amendment by each voting group entitled to vote separately on the amendment
was sufficient for approval by that voting group.

      IN WITNESS WHEREOF, the Corporation has set its hand and seal effective as
of July 10, 1998.

                                 PUBLIC SERVICE COMPANY OF COLORADO



                                 By:     /s/ Wayne H. Brunetti
                                        --------------------------------------
                                      Wayne H. Brunetti, Chief Executive Officer
Attest:



- -----------------------------
Cathy J. Hart, Corporate Secretary


                           *     *     *     *     *


      Paul J. Bonavia hereby consents to his appointment as the registered agent
for Public Service Company of Colorado.


                                   /s/ Paul J. Bonavia
                                 ---------------------------------  
                                 Paul J. Bonavia


                                       3



                                                                   Exhibit 3(b)1

                                 RESTATED BYLAWS
                          OF NEW CENTURY ENERGIES, INC.


1.    OFFICES.

      1.1  Offices.  In  addition  to its  registered  office  in the  State  of
Delaware, the Corporation shall have a corporate office in Denver,  Colorado and
significant operating offices in Amarillo, Texas, and such other offices, either
within or  without  the State of  Delaware,  at such  locations  as the Board of
Directors may from time to time determine or the business of the Corporation may
require.

2.    SEAL.

      2.1 Seal. The  Corporation  shall have a seal,  which shall have inscribed
thereon  its name and  year of  incorporation  and the  words,  "Corporate  Seal
Delaware."

3.    MEETINGS OF STOCKHOLDERS.

      3.1 Annual Meetings. The annual meeting of stockholders of the Corporation
shall be held on such date, at such time and at such place within or without the
State of Delaware as shall be determined by the Board of Directors  from time to
time.

      3.2  Special  Meetings.  Special  meetings  of  the  stockholders  of  the
Corporation shall be held on such date, at such time and at such place within or
without the State of Delaware as the Board of Directors may designate.

      3.3 Notice of Meetings.  (a) Notices of meetings of stockholders  shall be
in writing and shall state the place, date and hour of the meeting,  and, in the
case of a special  meeting,  the  purpose  or  purposes  for which a meeting  is
called.  No business  other than that  specified in the notice  thereof shall be
transacted at any special meeting.

            (b) Such notice  shall  either be  delivered  personally  or mailed,
postage prepaid,  to each stockholder  entitled to vote at such meeting not less
than 10 nor more than 60 days  before the date of the  meeting.  If mailed,  the
notice shall be directed to the  stockholder at his or her address as it appears
on the records of the Corporation.  Personal  delivery of any such notice to any
officer of a corporation or association or to any member of a partnership  shall
constitute  delivery  of  such  notice  to  such  corporation,   association  or
partnership.

            (c) Notice of any meeting of  stockholders  need not be given to any
stockholder if waived by such  stockholder  in writing,  whether before or after
such meeting is held,  or if such  stockholder  shall sign the minutes or attend
the meeting,  except that if such stockholder  attends a meeting for the express
purpose of objecting at the beginning of the meeting to the  transaction  of any
business  because  the  meeting  is  not  lawfully  called  or  convened,   such
stockholder shall not be deemed to have waived notice of such meeting.

      3.4  Adjourned  Meetings.  When a meeting is  adjourned to another time or
place,  unless otherwise  provided by these Restated Bylaws,  notice need not be
given of the  adjourned  meeting if the time and place  thereof are announced at
the meeting at which the  adjournment  is taken.  At the  adjourned  meeting the
stockholders  may transact any business which might have been  transacted at the
original  meeting.  If an  adjournment  is for more than 30 days, or if after an
adjournment,  a new record date is fixed for the adjourned  meeting, a notice of
the adjourned meeting shall be given to each stockholder entitled to vote at the
meeting.

      3.5 Quorum and  Adjournment.  Except as otherwise  provided by law, by the
Restated  Certificate of  Incorporation  of the Corporation or by these Restated
Bylaws, the presence, in person or by proxy, of the holders of a majority of the
aggregate  voting  power of the stock issued and  outstanding,  entitled to vote
thereat,  shall  constitute  a quorum for the  transaction  of  business  at all
meetings of  stockholders.  If such majority shall


<PAGE>

not be present or represented at any meeting of  stockholders,  the stockholders
present,  although  less than a quorum,  shall  have the  power to  adjourn  the
meeting.

      3.6   Vote  Required.  Except  as  otherwise  provided  by law or by the
Restated Certificate of Incorporation:

            (a) Directors shall be elected by a plurality of the votes cast at a
meeting of  stockholders by the  stockholders  entitled to vote in the election,
and

            (b)  whenever  any  corporate  action  other  than the  election  of
Directors is to be taken, it shall be authorized by a majority of the votes cast
at a meeting of stockholders by the stockholders entitled to vote thereon.

      3.7 Manner of Voting.  At each meeting of  stockholders,  each stockholder
having the right to vote shall be entitled  to vote in person or by proxy.  Each
stockholder  shall be entitled to vote each share of stock  having  voting power
registered in his name on the books of the  Corporation on the record date fixed
for determination of stockholders entitled to vote at such meeting.

      3.8 Proxies. (a) ) At any meeting of stockholders,  any stockholder may be
represented  and vote by proxy or  proxies.  In the event that any form of proxy
shall  designate  two or more  persons to act as  proxies,  a  majority  of such
persons  present at the meeting or, if only one shall be present,  then that one
shall have and may  exercise  all of the powers  conferred  by the form of proxy
upon all of the persons so designated  unless the form of proxy shall  otherwise
provide.

            (b) The Board of Directors  may, in advance of any annual or special
meeting of the stockholders,  prescribe  additional  regulations  concerning the
manner of execution and filing of proxies and the validation of the same,  which
are intended to be voted at any such meeting.

      3.9 Presiding  Officer and Secretary.  The Chairman of the Board shall act
as chairman of all meetings of the stockholders.  In the absence of the Chairman
of the Board,  the Vice  Chairman  of the Board or, in his or her  absence,  the
President,  or in his or her absence, any Vice President designated by the Board
of Directors shall act as chairman of the meeting.

      The Secretary of the Corporation shall act as secretary of all meetings of
the stockholders,  but, in the absence of the Secretary, the Assistant Secretary
designated in accordance with Section 5.11(b) of these Restated Bylaws shall act
as  secretary  of all  meetings  of the  stockholders,  but in the  absence of a
designated  Assistant  Secretary,  the  chairman  of the meeting may appoint any
person to act as secretary of the meeting.

      3.10  Procedure.  At each  meeting of  stockholders,  the  chairman of the
meeting  shall fix and announce the date and time of the opening and the closing
of the polls  for each  matter  upon  which  the  stockholders  will vote at the
meeting  and shall  determine  the order of  business  and all other  matters of
procedure. Except to the extent inconsistent with any such rules and regulations
as adopted by the Board of Directors,  the chairman of the meeting may establish
rules,  which need not be in writing,  to maintain  order and safety and for the
conduct of the meeting. Without limiting the foregoing, he or she may:

            (a) restrict  attendance  at any time to bona fide  stockholders  of
record and their proxies and other  persons in  attendance at the  invitation of
the chairman;

             (b) restrict  dissemination  of  solicitation  materials and use of
audio or visual recording devices at the meeting;

            (c) adjourn the meeting without a vote of the stockholders,  whether
or not there is a quorum present; and

            (d) make rules governing speeches and debate,  including time limits
and access to microphones.

                                       2
<PAGE>

The chairman of the meeting acts in his or her  absolute  discretion  and his or
her rulings are not subject to appeal.

4.    DIRECTORS.

      4.1 Powers. The Board of Directors shall exercise all of the powers of the
Corporation  except  such  as are by  law,  or by the  Restated  Certificate  of
Incorporation  of this Corporation or by these Restated Bylaws conferred upon or
reserved to the stockholders of any class or classes.

      4.2  Resignations.  Any Director may resign at any time by giving  written
notice to the Board of Directors or the Secretary.  Such resignation  shall take
effect at the date of  receipt  of such  notice or at any later  time  specified
therein.  Acceptance  of such  resignation  shall  not be  necessary  to make it
effective.

      4.3 Presiding  Officer and Secretary.  The Chairman of the Board shall act
as chairman of all  meetings  of the Board of  Directors.  In the absence of the
Chairman of the Board,  the Vice Chairman of the Board,  or in his absence,  the
Chief  Executive  Officer or other person  designated  by the Board of Directors
shall act as chairman of the meeting.

            The  Secretary  of the  Corporation  shall act as  secretary  of all
meetings of the Board of Directors,  but, in the absence of the  Secretary,  the
Assistant  Secretary  designated  in  accordance  with Section  5.11(b) of these
Restated Bylaws shall act as secretary of all meetings of the stockholders,  but
in the absence of a designated Assistant Secretary,  the chairman of the meeting
may appoint any person to act as secretary of the meeting.

      4.4  Annual  Meetings.  The  Board  of  Directors  shall  meet  each  year
immediately  following the annual  meeting of  stockholders,  at the place where
such meeting of  stockholders  has been held, or at such other place as shall be
fixed by the person  presiding  over the  meeting of the  stockholders,  for the
purpose of election of officers and  consideration of such other business as the
Board of Directors considers relevant to the management of the Corporation.

      4.5 Regular Meetings.  Regular meetings of the Board of Directors shall be
held on such dates and at such times and places,  within or without the state of
Delaware, as shall from time to time be determined by the Board of Directors. In
the absence of any such determination, such meetings shall be held at such times
and places,  within or without the State of Delaware,  as shall be designated by
the Chairman of the Board on not less than twelve hours notice to each Director,
given  verbally or in writing  either  personally,  by telephone  (including  by
message or recording device), by facsimile transmission, by telegram or by telex
or on not less than three (3) calendar  days' notice to each  Director  given by
mail.

      4.6 Special Meetings.  Special meetings of the Board of Directors shall be
held at the call of the  Chairman of the Board at such times and places,  within
or without the State of Delaware, as he or she shall designate, on not less than
twelve  hours  notice to each  Director,  given  verbally  or in writing  either
personally,  by  telephone  (including  by  message  or  recording  device),  by
facsimile  transmission,  by  telegram or by telex or on not less than three (3)
calendar days' notice to each Director given by mail.  Special meetings shall be
called by the  Secretary on like notice at the written  request of a majority of
the Directors then in office.

      4.7 Quorum  and  Powers of a  Majority.  At all  meetings  of the Board of
Directors  and of each  committee  thereof,  a majority of the members  shall be
necessary and sufficient to constitute a quorum for the transaction of business,
and the act of a  majority  of the  members  present  at any  meeting at which a
quorum is present shall be the act of the Board of Directors or such  committee,
unless by express provision of law, of the Restated Certificate of Incorporation
or these  Restated  Bylaws,  a different  vote is  required,  in which case such
express  provision  shall  govern and  control.  In the  absence of a quorum,  a
majority of the members  present at any meeting may,  without  notice other than
announcement  at the  meeting,  adjourn  such  meeting from time to time until a
quorum is present.


                                       3
<PAGE>

      4.8 Waiver of Notice. Notice of any meeting of the Board of Directors,  or
any committee  thereof,  need not be given to any member if waived by him or her
in writing,  whether before or after such meeting is held, or if he or she shall
sign the minutes or attend the meeting,  except that if such Director  attends a
meeting for the express  purpose of objecting at the beginning of the meeting to
the  transaction of any business  because the meeting is not lawfully  called or
convened,  then such Director  shall not be deemed to have waived notice of such
meeting.

      4.9  Manner of  Acting.  (a)  Members  of the Board of  Directors,  or any
committee  thereof,  may participate in any meeting of the Board of Directors or
such  committee  by means of  conference  telephone  or  similar  communications
equipment  by means of which all  persons  participating  therein  can hear each
other, and participation in a meeting by such means shall constitute presence in
person at such meeting.

            (b) Any action  required or  permitted to be taken at any meeting of
the Board of Directors or any  committee  thereof may be taken without a meeting
if all members of the Board of Directors or such committee,  as the case may be,
consent  thereto in  writing,  and the  writings  are filed with the  minutes of
proceedings of the Board of Directors or such committee.

      4.10  Compensation.  (a)  The  Board  of  Directors,  by a  resolution  or
resolutions,  may  fix,  and  from  time to time  change,  the  compensation  of
Directors.

            (b)  Each  Director  shall be  entitled  to  reimbursement  from the
Corporation for his or her reasonable  expenses  incurred with respect to duties
as a member of the Board of Directors or any committee thereof.

            (c) Nothing contained in these Restated Bylaws shall be construed to
preclude any Director  from serving the  Corporation  in any other  capacity and
from receiving  compensation  from the Corporation for service rendered to it in
such other capacity.

      4.11 Standing Committees.  The Board of Directors shall have the following
four standing committees, each committee of which shall consist of five members,
including the chairman of the committee:

            (a) A Nominating and Civic Responsibility  Committee which shall, in
addition  to any  other  duties  assigned  to such  committee  by the  Board  of
Directors,  nominate  candidates to fill vacancies on the Board of Directors and
shall review the  participation  of the  Corporation in the communities in which
the Corporation operates;

            (b) A Finance Committee which shall, in addition to any other duties
assigned  to  such  committee  by  the  Board  of  Directors,  review  and  make
recommendations  to the Board of Directors  as to the methods of  financing  the
Corporation's operations;

             (c) An Audit Committee which shall, in addition to any other duties
assigned  to such  committee  by the Board of  Directors,  review the  financial
affairs of the Corporation with the Corporation's auditors; and

            (d) A Compensation  Committee  which shall, in addition to any other
duties  assigned to such  committee by the Board of  Directors,  review and make
recommendations  to the  Board  of  Directors  concerning  the  compensation  of
officers of the Corporation.

      4.12 Additional  Committees.  In addition to the standing committees,  the
Board of Directors  may, (i) if on or prior to the date four and one-half  years
after the effective date, if any, of the mergers (the "Merger Date") which cause
Public Service  Company of Colorado and  Southwestern  Public Service Company to
become  subsidiaries  of the  Corporation  pursuant to the Agreement and Plan of
Reorganization dated August 22 1995, as amended,  among the Corporation,  Public
Service Company of Colorado and Southwestern Public Service Company (the "Merger
Agreement")  by  resolution  adopted  by  two-thirds  of  the  entire  Board  of
Directors,  and (ii) if thereafter,  by resolution  adopted by a majority of the
entire Board of Directors,  designate one or more  additional  committees,  each
committee to consist of one or more  Directors,  which to the extent

                                       4
<PAGE>

provided in said  resolution  or  resolutions  shall have and may  exercise  the
powers and authority of the Board of Directors in the management of the business
and affairs of the Corporation, except as provided in Section 4.13.

      4.13 Committee  Procedure,  Limitations of Committee Powers. (a) Except as
otherwise provided by these Restated Bylaws,  each committee shall adopt its own
rules  governing  the time,  place and method of holding  its  meetings  and the
conduct  of its  proceedings  and shall  meet as  provided  by such  rules or by
resolution  of the  Board  of  Directors.  Unless  otherwise  provided  by these
Restated Bylaws or any such rules or  resolutions,  notice of the time and place
of each meeting of a committee  shall be given to each member of such  committee
as provided in Section 4.6 of these  Restated  Bylaws with respect to notices of
special meetings of the Board of Directors.

            (b) Each committee shall keep regular minutes of its proceedings and
report the same to the Board of Directors when required.

            (c) Any member of any committee  may be removed from such  committee
either with or without  cause,  at any time,  by the Board of  Directors  at any
meeting  thereof.  Any vacancy in any committee  shall be filled by the Board of
Directors in the manner prescribed by the Restated  Certificate of Incorporation
or these  Restated  Bylaws for the original  appointment  of the members of such
committee.

      4.14 Actions Requiring More Than a Majority of Directors  Present.  On and
prior to the date that is four and one-half years after the Merger Date, (a) the
following actions by the Board of Directors will require the affirmative vote of
two-thirds of the Board of Directors:  (i) any change in the method of selecting
committee  members  from that set forth in the  Merger  Agreement,  and (ii) any
amendments to Section 1.1 or this Section 4.14 of these Restated Bylaws, and (b)
the removal of or action to fill a vacancy in the office of the Chief  Executive
Officer or President of the Corporation or the Chairman of the Board or the Vice
Chairman  of the Board  will  require  the  affirmative  vote of the  greater of
two-thirds of the entire Board of Directors or ten Directors.

5.    OFFICERS.

      5.1 Number.  (a) The  officers of the  Corporation  shall  include a Chief
Executive  Officer, a President,  one or more Vice Presidents  (including one or
more Executive Vice  Presidents and one or more Senior Vice Presidents if deemed
appropriate by the Board of Directors),  a Secretary and a Treasurer.  The Board
of  Directors  shall  also  elect a  Chairman  of the Board and may elect a Vice
Chairman of the Board. The Board of Directors may also elect such other officers
as the Board of Directors may from time to time deem  appropriate  or necessary.
Except for the  Chairman  of the Board,  the Vice  Chairman of the Board and the
Chief  Executive  Officer,  none of the  officers of the  Corporation  need be a
director  of the  Corporation.  Any two or more  offices may be held by the same
person to the extent permitted by the GCLD.

            (b) The Board of  Directors  may  delegate  to the  Chief  Executive
Officer  or  President  the  power  to  appoint  one or  more  employees  of the
Corporation as divisional or departmental  vice presidents and fix the duties of
such  appointees.  However,  no such divisional or  departmental  vice president
shall be  considered  as an  officer of the  Corporation,  the  officers  of the
Corporation being limited to those officers elected by the Board of Directors.

      5.2  Election of  Officers,  Qualification  and Term.  The officers of the
Corporation  shall be elected from time to time by the Board of  Directors  and,
except as may otherwise be expressly  provided in a contract of employment  duly
authorized by the Board of Directors or the Merger Agreement,  shall hold office
at the pleasure of the Board of Directors.

      5.3 Removal.  Except as otherwise  expressly  provided in a contract  duly
authorized  by the Board of  Directors or in the Merger  Agreement,  any officer
elected by the Board of Directors may be removed,  either with or without cause,
by the Board of Directors at any meeting thereof,  or to the extent delegated to
the Chairman of the Board or the Chief Executive Officer, by the Chairman of the
Board or the Chief Executive Officer.


                                       5
<PAGE>

      5.4 Resignations. Any officer of the Corporation may resign at any time by
giving  written notice to the Board of Directors or to the Chairman of the Board
or to the Chief Executive  Officer.  Such  resignation  shall take effect at the
date of the receipt of such notice or at any later time  specified  therein and,
unless otherwise specified therein, the acceptance of such resignation shall not
be necessary to make it effective.

      5.5  Salaries.  The salaries of all officers of the  Corporation  shall be
fixed by the Board of  Directors  from  time to time,  and no  officer  shall be
prevented  from  receiving  such  salary by reason of the fact that he is also a
Director of the Corporation.

      5.6 The  Chairman of the Board.  The  Chairman of the Board shall have the
powers and duties  customarily  and  usually  associated  with the office of the
Chairman of the Board.  The  Chairman of the Board shall  preside at meetings of
the stockholders and of the Board of Directors.

      5.7 Vice Chairman of the Board.  The Vice Chairman of the Board shall have
the powers and duties  customarily and usually associated with the office of the
Vice Chairman of the Board.

      5.8 Chief  Executive  Officer.  The Chief  Executive  Officer  shall have,
subject to the supervision, direction and control of the Board of Directors, the
general  powers and  duties of  supervision,  direction  and  management  of the
affairs and business of the  Corporation  usually vested in the chief  executive
officer of a corporation, including, without limitation, all powers necessary to
direct and control the  organizational  and reporting  relationships  within the
Corporation. If at any time the office of the Chairman of the Board and the Vice
Chairman  of the Board  shall not be  filled,  or in the event of the  temporary
absence or  disability of the Chairman of the Board and the Vice Chairman of the
Board,  the Chief  Executive  Officer  shall  have the  powers and duties of the
Chairman of the Board.

      5.9 The President.  The President shall serve as chief  operating  officer
and shall  have such  other  powers  and  perform  such  other  duties as may be
delegated to him or her from time to time by the Board of Directors or the Chief
Executive Officer.

      5.10 The Vice  Presidents.  Each Vice President shall have such powers and
perform  such  duties as may from time to time be  assigned to him or her by the
Board of Directors, the Chief Executive Officer or the President.

      5.11 The Secretary and the Assistant  Secretary.  (a) The Secretary  shall
attend meetings of the Board of Directors and meetings of the  stockholders  and
record  all votes and  minutes of all such  proceedings  in a book kept for such
purpose.  He or she shall have all such  further  powers and duties as generally
are  incident  to the  position  of  Secretary  or as may  from  time to time be
assigned to him or her by the Board of Directors, the Chief Executive Officer or
the President.

            (b) Each Assistant Secretary shall have such powers and perform such
duties  as may  from  time to time be  assigned  to him or her by the  Board  of
Directors,  the Chief Executive Officer, the President or the Secretary. In case
of  the  absence  or  disability  of  the  Secretary,  the  Assistant  Secretary
designated  by  the  Chief  Executive  Officer  (or,  in  the  absence  of  such
designation,  by the Secretary) shall perform the duties and exercise the powers
of the Secretary.

      5.12 The Treasurer and the Assistant  Treasurer.  (a) The Treasurer  shall
have custody of the  Corporation's  funds and securities and shall keep full and
accurate  accounts of  receipts  and  disbursements  in books  belonging  to the
Corporation and shall deposit or cause to be deposited  moneys or other valuable
effects in the name and to the credit of the Corporation in such depositories as
may be designated by the Board of Directors.  The Treasurer  shall also maintain
adequate records of all assets,  liabilities and transactions of the Corporation
and shall see that adequate audits thereof are currently and regularly made. The
Treasurer  shall  have such other  powers and  perform  such other  duties  that
generally  are incident to the position of Treasurer or as may from time to time
be assigned to him or her by the Board of Directors, the Chief Executive Officer
or the President.


                                       6
<PAGE>

            (b) Each Assistant Treasurer shall have such powers and perform such
duties  as may  from  time to time be  assigned  to him or her by the  Board  of
Directors,  the Chief Executive Officer, the President or the Treasurer. In case
of  the  absence  or  disability  of  the  Treasurer,  the  Assistant  Treasurer
designated  by  the  Chief  Executive  Officer  (or,  in  the  absence  of  such
designation,  by the Treasurer) shall perform the duties and exercise the powers
of the Treasurer.

6.    STOCK

      6.1  Certificates.  Certificates  for  shares of stock of the  Corporation
shall be issued under the seal of the Corporation,  or a facsimile thereof,  and
shall be numbered and shall be entered in the books of the  Corporation  as they
are issued.  Each  certificate  shall bear a serial  number,  shall  exhibit the
holder's name and the number of shares evidenced thereby, and shall be signed by
the  Chairman of the Board or a Vice  Chairman,  if any, or the Chief  Executive
Officer or the  President  or any Vice  President,  and by the  Secretary  or an
Assistant  Secretary or the Treasurer or an Assistant  Treasurer.  Any or all of
the  signatures  on the  certificate  may be a  facsimile.  In case any officer,
transfer agent or registrar who has signed or whose facsimile signature has been
placed upon a certificate  shall have ceased to be such officer,  transfer agent
or  registrar  before  such  certificate  is  issued,  it may be  issued  by the
corporation  with the same effect as if such person or entity were such officer,
transfer agent or registrar at the date of issue.

      6.2 Transfers.  Transfers of stock of the Corporation shall be made on the
books of the Corporation only upon surrender to the Corporation of a certificate
(if any) for the shares  duly  endorsed  or  accompanied  by proper  evidence of
succession,  assignment  or  authority to transfer,  provided  such  succession,
assignment  or  transfer  is not  prohibited  by  the  Restated  Certificate  of
Incorporation, these Restated Bylaws, applicable law or contract. Thereupon, the
Corporation  shall issue a new certificate (if requested) to the person entitled
thereto, cancel the old certificate (if any) and record the transaction upon its
books.

      6.3  Lost,  Stolen  or  Destroyed  Certificates.  Any  person  claiming  a
certificate of stock to be lost,  stolen or destroyed shall make an affidavit or
an affirmation of that fact, and shall give the  Corporation a bond of indemnity
in satisfactory form and with one or more satisfactory sureties, whereupon a new
certificate  (if  requested)  may be issued  of the same  tenor and for the same
number of shares as the one alleged to be lost, stolen or destroyed.

      6.4  Registered  Stockholders.   The  Corporation  shall  be  entitled  to
recognize the exclusive  right of a person  registered on its books as the owner
of shares as the person  entitled to exercise  the rights of a  stockholder  and
shall not be bound to recognize  any  equitable or other claim to or interest in
any such  shares on the part of any other  person,  whether or not it shall have
express or other notice thereof,  except as otherwise  expressly provided by the
General Corporation Law of Delaware (the "GCLD").

      6.5  Additional  Powers of the Board.  (a) In addition to those powers set
forth in Section 4.1, the Board of Directors  shall have power and  authority to
make all such rules and  regulations as it shall deem  expedient  concerning the
issue,  transfer and  registration  of  certificates  for shares of stock of the
Corporation,  including the use of uncertificated shares of stock subject to the
provisions of the GCLD.

            (b) The Board of Directors  may appoint and remove  transfer  agents
and registrars of transfers,  and may require all stock certificates to bear the
signature of any such transfer agent and/or any such registrar of transfers.


                                       7
<PAGE>


7.    MISCELLANEOUS

      7.1 Place and Inspection of Books. (a) The books of the Corporation  other
than such books as are  required  by law to be kept within the State of Delaware
shall be kept in such  place or places  either  within or  without  the State of
Delaware as the Board of Directors may from time to time determine.

            (b) At least ten days  before  each  meeting  of  stockholders,  the
officer  in charge  of the  stock  ledger  of the  Corporation  shall  prepare a
complete list of the stockholders  entitled to vote at the meeting,  arranged in
alphabetical order and showing the address of each stockholder and the number of
shares  registered in the name of each  stockholder.  Such list shall be open to
the  examination  of any  stockholder,  for any purpose  germane to the meeting,
during ordinary  business hours,  for a period of at least ten days prior to the
meeting,  either at a place  within  the city  where the  meeting is to be held,
which  place  shall be  specified  in the  notice  of the  meeting,  or,  if not
specified,  at the place where the meeting is to be held. The list shall also be
produced  and kept at the time and place of the  meeting  during  the whole time
thereof, and may be inspected by any stockholder who is present.

            (c) The Board of Directors shall determine from time to time whether
and, if allowed, when and under what conditions and regulations the accounts and
books of the  Corporation  (except  such as may be by law  specifically  open to
inspection  or as otherwise  provided by these  Restated  Bylaws) or any of them
shall be open to the inspection of the stockholders and the stockholders' rights
in respect thereof.

      7.2 Voting Shares in Other Corporations.  The Chief Executive Officer, the
President or any other  officer of the  Corporation  designated  by the Board of
Directors  may vote any and all  shares  held by the  Corporation  in any  other
corporation.

      7.3 Fiscal Year. The fiscal year of the  Corporation  shall be such fiscal
year as the Board of Directors from time to time by resolution shall determine.

      7.4  Gender/Number.  As used in  these  Restated  Bylaws,  the  masculine,
feminine or neuter gender, and the singular or plural number, shall each include
the others whenever the context so indicates.

      7.5 Paragraph Titles. The titles of the paragraphs have been inserted as a
matter of  reference  only and shall  not  control  or  affect  the  meaning  or
construction of any of the terms and provisions hereof.

      7.6  Amendment.  Subject to Section 4.14 of these Restated  Bylaws,  these
Restated Bylaws may be altered,  amended or repealed by (a) the affirmative vote
of the  holders  of a  majority  of the  voting  power of the stock  issued  and
outstanding  and  entitled  to vote at any  meeting of  stockholders,  or (b) by
resolution  adopted by the  affirmative  vote of not less than a majority of the
Directors in office,  at any annual or regular meeting of the Board of Directors
or at any special  meeting of the Board of  Directors  if notice of the proposed
alteration,  amendment or repeal be contained in written  notice of such special
meeting.  Notwithstanding the foregoing, the amendment of any provision of these
Restated  Bylaws  requiring an  affirmative  vote in excess of a majority of the
Directors in office shall require the affirmative vote of at least the number of
directors the affirmative vote of whom is required by such provision.

      7.7 Restated Certificate of Incorporation. Notwithstanding anything to the
contrary  contained herein, if any provision  contained in these Restated Bylaws
is inconsistent  with or conflicts with a provision of the Restated  Certificate
of Incorporation, such provision of these Restated Bylaws shall be superseded by
the inconsistent  provision in the Restated  Certificate of Incorporation to the
extent necessary to give effect to such provision in the Restated Certificate of
Incorporation.


                                       8


                                                               Exhibit 10(a)1
                     Form of Change in Control Agreement
                                   Between
                          New Century Energies, Inc.
                                     and
                               (Executive Name)

         THIS AGREEMENT is made and entered into effective as of the 1st day
     of August, 1997 by and between NEW CENTURY ENERGIES, INC., a Delaware
     corporation (hereinafter "NCE") and (Executive Name)  (hereinafter, the
     "Executive").

            WHEREAS Executive is a valuable employee of NCE and an integral
part of its management; and

            WHEREAS NCE wishes to encourage Executive to continue Executive's
career with and services to NCE for the period during and after an actual or
threatened Change In Control; and

            WHEREAS the Board of Directors of NCE has determined that it
would be in the best interests of NCE and its shareholders to assure
continuity in the management of NCE in the event of a Change In Control by
entering into this Agreement with Executive;

            NOW, THEREFORE, in consideration of the services to be performed
by Executive for NCE in the future, as well as the promises and covenants
contained in this Agreement, the parties agree as follows:

            Sec. 1.  DEFINITIONS.  For purposes of this Agreement, the
following capitalized terms shall have the meanings prescribed below:

            Sec. 1.1  Board.  "Board" means the Board of Directors of NCE.
Except where this Agreement requires that action be taken by a specified
percentage or number of the members of the Board, action on behalf of the
Board may be taken by its Executive Committee, or by any other committee or
individual specifically authorized to act on behalf of the Board by
resolution of the Board.

            Sec. 1.2  Change In Control.  A "Change In Control" is the
occurrence of any of the events described in subsections (a) through (d)
below:

     (a) Either (i) receipt by NCE of a report on Schedule 13D, or an
         amendment to such a report, filed with the Securities and Exchange
         Commission pursuant to Section 13(d) of the Securities Exchange Act
         of 1934 (the "1934 Act") disclosing that any person (as such term is
         used in Section 13(d) of the 1934 Act) ("Person"), is the beneficial
         owner, directly or indirectly, of twenty percent or more of the
         combined voting power of the outstanding stock of NCE, or (ii) actual
         knowledge by the Board of facts on the basis of which any Person is
         required to file such a report on Schedule 13D, or to make an
         amendment to such a report, with the SEC (or would be required to
         file such a report or amendment upon the lapse of the applicable
         period of time specified in Section 13(d) of the 1934 Act) disclosing
         that such Person is the beneficial owner, directly or indirectly, of
         twenty percent or more of the combined voting power of the
         outstanding stock of NCE.


<PAGE>


     (b) Purchase by any Person other than NCE or a wholly-owned subsidiary
         of NCE, of shares pursuant to a tender or exchange offer to acquire
         any stock of NCE (or securities convertible into stock) for cash,
         securities or any other consideration provided that, after
         consummation of the offer, such Person is the beneficial owner (as
         defined in Rule 13d-3 under the 1934 Act), directly or indirectly,
         of twenty percent or more of the combined voting power of the
         outstanding stock of NCE (calculated as provided in paragraph (d) of
         Rule 13d-3 under the 1934 Act in the case of rights to acquire
         stock).

     (c) Approval by the shareholders of NCE of a transaction described in
         any of the following paragraphs:

         (1)  Any consolidation or merger of NCE in which NCE is not the
              continuing or surviving corporation or pursuant to which shares
              of stock of NCE would be converted into cash, securities or
              other property, other than a consolidation or merger of NCE in
              which holders of its stock immediately prior to the
              consolidation or merger own at least a majority of the combined
              voting power of the outstanding stock of the surviving
              corporation immediately after the consolidation or merger (or
              at least a majority of the combined voting power of the
              outstanding stock of a corporation which owns directly or
              indirectly all of the voting stock of the surviving
              corporation).

         (2)  Any consolidation or merger in which NCE is the continuing or
              surviving corporation but in which the shareholders of NCE
              immediately prior to the consolidation or merger do not hold at
              least a majority of the combined voting power of the
              outstanding stock of the continuing or surviving corporation
              (except where such holders of stock hold at least a majority of
              the combined voting power of the outstanding stock of the
              corporation which owns directly or indirectly all of the voting
              stock of NCE).

         (3)  Any sale, lease, exchange or other transfer (in one transaction
              or a series of related transactions) of all or substantially
              all the assets of NCE (except such a transfer to a corporation
              which is wholly owned, directly or indirectly, by NCE), or any
              complete liquidation of NCE.

         (4)  Any merger or consolidation of NCE where, after the merger or
              consolidation, one Person owns 100% of the shares of stock of
              NCE (except where the holders of NCE's voting stock immediately
              prior to such merger or consolidation own at least a majority
              of the combined voting power of the outstanding stock of such
              Person immediately after such merger or consolidation).

     (d) A change in the majority of the members of the Board within a
         24-month period unless the election or nomination for election by
         NCE's shareholders of each new director was approved by the vote of
         at least two-thirds of the directors then still in office who were
         in office at the beginning of the 24-month period.


                                       2
<PAGE>

A Change In Control occurs on the date that an event described in subsection
(a), (b) or (d) occurs.  In the case of a transaction described in subsection
(c) which is subject to approval by the shareholders, the Change In Control
occurs on the date the transaction is completed.

            Sec. 1.3  Code.  "Code" means the Internal Revenue Code of 1986,
as amended.

            Sec. 1.4  Disability.  "Disability" or "Disabled" means the
inability of Executive as a result of physiological or psychological
condition to perform the essential functions of any position held by
Executive on or after the date a Change In Control occurred.

            Sec. 1.5  Discharge for Cause.  Solely for purposes of this
Agreement, "Discharge for Cause" means a termination of Executive's
employment by NCE because of Executive's fraud or dishonesty which has
resulted, or is likely to result, in material economic damage to NCE, as
determined in good faith by a vote of two-thirds of the non-employee
directors at a meeting of the Board at which Executive has been afforded an
opportunity to be heard.

            Sec. 1.6  Good Reason.  "Good Reason" means the occurrence, on or
after the date of a Change In Control and without Executive's written
consent, of any of the following events or circumstances, as determined in
good faith by Executive:

     (a) A reduction in Executive's base salary in effect immediately prior
         to the Change In Control.

     (b) A material reduction in Executive's target opportunity, measured as
         a percentage of base salary, to earn annual or long-term incentives
         or bonuses.

     (c) A failure to provide to Executive employee benefits and perquisites
         (other than amounts described in subsections (a) and (b)) which are
         reasonably equivalent in the aggregate to those provided to
         Executive immediately prior to the Change In Control.

     (d) A material reduction by NCE of Executive's job duties and
         responsibilities that existed immediately prior to the Change In
         Control, including but not limited to the assignment to Executive of
         duties and responsibilities which are materially inconsistent with
         those of Executive's position immediately prior to the Change In
         Control.

     (e) Assignment or reassignment of Executive to another place of
         employment that is more than 50 miles (measured by the shortest
         paved highway route) from Executive's place of employment
         immediately prior to the Change In Control.

     (f) A failure by NCE to pay to Executive when due any deferred
         compensation that was deferred by Executive prior to the Change in
         Control.

     (g) A failure by NCE to comply with the terms and conditions of this
         Agreement.

Notwithstanding the foregoing:

                                       3

<PAGE>

     (aa)An event or circumstance shall not constitute Good Reason unless
         Executive provides written notice to NCE specifying the basis for
         Executive's determination that Good Reason exists within six months
         after the first day on which such Good Reason existed.  If NCE cures
         the event or circumstance within 30 days of receiving such written
         notice (including retroactive restoration of any lost compensation
         or benefits, where reasonably possible), Good Reason shall be deemed
         never to have existed.

     (bb)NCE and Executive may, upon mutual written agreement, waive any
         provision of this Section which would otherwise constitute Good
         Reason.

            Sec. 2.  TERM OF AGREEMENT.  This Agreement shall become
effective as of the date written in the first paragraph of this Agreement and
shall be for an initial term ending on December 31, 1999.  The term of this
Agreement shall be automatically extended on each December 31 for one
additional calendar year, unless NCE provides written notice to Executive
prior to a December 31 that this sentence shall cease to apply on that
December 31.  (For example, on December 31, 1997, the term will be
automatically extended to December 31, 2000 unless NCE gives written notice
to Executive prior to December 31, 1997.)  This Agreement will apply to any
Change in Control that occurs during the term of this Agreement.

            Sec. 3.  ELIGIBILITY FOR BENEFITS.  Except as provided in
Sec. 3.1, if Executive is a full-time employee of NCE on the date a Change In
Control occurs, Executive shall be entitled to the benefits provided under
Sec. 4 following the occurrence of either of the following events:

     (a) Executive's employment is involuntarily terminated by NCE during the
         36-month period following the Change In Control.

     (b) Executive terminates employment with NCE for Good Reason during the
         36-month period following the Change In Control; provided that the
         period in which NCE could correct the Good Reason has expired.

            Sec. 3.1  Disqualification from Benefits.  Notwithstanding
Sec. 3, Executive shall not be eligible for any benefits under this Agreement
under any of the following circumstances:

     (a) NCE terminates Executive's employment due to Discharge for Cause.

     (b) Executive's employment with NCE terminates due to Disability or
         Executive's death.

     (c) Executive voluntarily terminates employment without Good Reason.
         For purposes of this Agreement, a voluntary termination of
         employment includes any termination that qualifies as a form of
         "retirement" under any employee pension benefit plan maintained by
         NCE that covers Executive; provided that Good Reason does not exist
         at the time of such retirement.

     (d) Executive's employment is terminated pursuant to any policy of NCE
         that requires or permits mandatory retirement of Executive upon
         attainment of a specified age and that complies with applicable laws
         and regulations.

                                       4

<PAGE>

If this Sec. 3.1 applies, Executive shall be subject to the normal policies
of NCE regarding such events and shall be eligible for only such compensation
and benefits as would apply if this Agreement did not exist.

            Sec. 3.2  Anticipation of Change In Control.  If (i) Executive's
employment is involuntarily terminated by NCE, or Executive terminates such
employment with NCE for Good Reason, on or after the date on which a public
announcement is made by NCE of its intention to participate in a transaction
which would constitute a Change In Control, (ii) Executive would be eligible
under Sec. 3 if the Change In Control had already occurred, (iii) Sec. 3.1
does not apply, and (iv) the Change In Control actually occurs, then
Executive's employment shall be deemed solely for purposes of this Agreement
to have terminated under Sec. 3 on the date the Change In Control occurred
and Executive shall be entitled to the benefits provided under Sec. 4.

            Sec. 4.  BENEFITS.  If Executive is eligible under Sec. 3,
Executive will receive the benefits provided under Sec. 4.1 through Sec. 4.5.

            Sec. 4.1  Severance Payment.  Within five business days after
Executive's termination of employment under Sec. 3 occurs, NCE will pay to
Executive a lump sum equal to two and one-half times the sum of the amounts
determined under subsections (a) and (b):

     (a) Executive's annual base salary immediately prior to the Change In
         Control.

     (b) The average of the short- and long-term bonuses that Executive
         received for the two calendar years immediately preceding the date
         Executive's employment terminated.  For purposes of this subsection:

         (1)  If Executive's employment terminates during 1997, the amount
              under this subsection (b) shall be equal to the target award
              payable by NCE for 1997.

         (2)  If Executive's employment terminates during 1998, the amount
              under this subsection (b) shall be equal to the target award
              for 1998.

         (3)  If Executive's employment terminates during 1999, the amount
              under this subsection (b) shall be the average of the actual
              bonus for 1998 and the target award for 1999.

         (4)  Any portion of a bonus that was paid or awarded in the form of
              NCE stock will be valued for purposes of this subsection (b) at
              the closing price for such stock on the New York Stock Exchange
              on the most recent business day preceding the date the cash
              portion of the award became payable to Executive (disregarding
              any election to defer said payment).

The payment under this Sec. 4.1 shall also include any accrued but unpaid
salary and pay for any accrued but unused vacation under NCE's policies which
is outstanding on the date Executive's employment terminates.

                                       5

<PAGE>

            Sec. 4.2  Stock Options and Restricted Stock.  All stock options
granted to Executive which are outstanding on the date of Executive's
termination of employment under Sec. 3 shall become vested, and all
restrictions on restricted shares of NCE stock granted to Executive shall
lapse on that date.  All of Executive' outstanding stock options shall be
exercisable as if Executive had remained an employee of NCE during the two
and one-half year period following the termination of Executive's employment.

            Sec. 4.3  Continuation of Welfare Benefits.  During the 30 month
period following Executive's termination of employment under Sec. 3,
Executive will be eligible for continuation of coverage for Executive and
Executive's eligible dependents under all life insurance, disability,
accident and health insurance coverage in effect at the time Executive's
employment terminated, subject to the following:

     (a) Such coverage shall be provided under the same terms and conditions
         as apply to similarly situated active employees of NCE during such
         period.  Executive shall pay to NCE the contribution, if any,
         required to be paid for such coverage by similarly situated active
         employees of NCE during such period.

     (b) If a group insurance carrier refuses to provide the coverage
         described in this Sec. 4.3 under its contract issued to NCE, or if
         NCE reasonably determines that the coverage required under this Sec.
         4.3 would cause a welfare plan sponsored by NCE to violate any
         provision of the Code prohibiting discrimination in favor of highly
         compensated employees or key employees, NCE will use its best
         efforts to obtain for Executive an individual insurance policy
         providing comparable coverage.  However, if NCE determines in good
         faith that comparable coverage cannot be obtained for less than two
         times the premium or premium equivalent for such coverage under
         NCE's welfare plan or plans, NCE's sole obligation under this Sec.
         4.3 with respect to that coverage will be limited to paying to
         Executive a monthly amount equal to two times the monthly premium or
         premium equivalent for that coverage under NCE's plans.

     (c) Benefits provided to Executive or Executive's dependents under this
         section will be secondary to any comparable benefits provided by
         another employer to the extent permitted by applicable law.

            Sec. 4.4  Retirement Benefits.  Within five business days after
Executive's employment terminates under Sec. 3 (or as soon thereafter as the
amount payable under this section can reasonably be determined), NCE will pay
Executive a lump sum equal to the sum of the following amounts:

     (a) Retirement Plans.  The present value of the additional benefit to
         which Executive would be entitled under the qualified defined
         benefit pension plan and non-qualified supplemental executive
         retirement plan, if any, that covered Executive on the date the
         termination of employment occurred, determined by assuming that
         Executive's employment had continued for an additional 30 months and
         that Executive's rate of compensation being recognized by each such
         plan immediately prior to the termination of employment had
         continued in effect during such period.  The "present value" for
         purposes of this subsection (a) shall be determined by using the
         actuarial equivalent
                                       6

<PAGE>

     factors specified in the qualified defined benefit pension plan for
         determining lump sum distributions (disregarding any restriction on
         the size of lump sum distributions allowed).

     (b) Savings Plans.  The sum of the additional contributions (other than
         pre-tax salary deferral contributions by Executive) that would have
         been made or credited by NCE to Executive's accounts under each
         qualified defined contribution plan and non-qualified supplemental
         executive savings plan, if any, that covered Executive on the date
         the termination of employment occurred, determined by assuming that:

         (1)  Executive's employment had continued for an additional 30
              months.

         (2)  Executive's rate of compensation being recognized by each plan
              immediately prior to the termination of employment had
              continued in effect during such period.

         (3)  In the case of matching contributions, Executive's rate of
              pre-tax salary deferral contributions in effect immediately
              prior to the termination of employment had remained in effect
              throughout such period.

         (4)  In the case of discretionary contributions by NCE, NCE
              continued to make such contributions during such period at the
              rate that applied to the most recent plan year that ended prior
              to the termination of employment.

            Sec. 4.5  Excise Tax Gross-Up.  If Independent Tax Counsel
determines that the aggregate payments made to Executive under this Agreement
and any other payments to Executive from NCE which constitute "parachute
payments" as defined in Code Section 280G, or any successor provision thereto
("Parachute Payments") would be subject to the excise tax imposed by Code
Section 4999 (the "Excise Tax"), then Executive will receive an additional
payment (a "Gross-Up Payment") in an amount determined by Independent Tax
Counsel such that after payment by Executive of all federal and state income
and excise taxes (including any Excise Tax) imposed on the Gross-Up Payment
and any interest or penalties imposed with respect to such taxes, Executive
retains from the Gross-Up Payment an amount equal to the Excise Tax imposed
on the payments.

     (a) If Independent Tax Counsel determines that no Excise Tax is payable
         by Executive, it shall furnish Executive with a written opinion that
         Executive has substantial authority not to report any Excise Tax on
         Executive's federal income tax return.  If Executive is subsequently
         required to make a payment of any Excise Tax, then Independent Tax
         Counsel shall determine the grossed-up amount of such payment using
         the same principles as applied to calculation of the Gross-Up
         Payment (referred to herein as a "Gross-Up Underpayment") and any
         such Gross-Up Underpayment shall be promptly paid by NCE to or for
         the benefit of Executive.

                                       7

<PAGE>

     (b) Executive shall notify NCE in writing within 15 days of any claim by
         the Internal Revenue Service that, if successful, would require the
         payment by NCE of a Gross-Up Payment.  If NCE notifies Executive in
         writing that it desires to contest such claim and that it will bear
         the costs and provide the indemnification as required by this
         subsection, Executive shall:

         (1)  Give NCE any information reasonably requested by NCE relating
              to such claim.

         (2)  Take such action in connection with contesting such claim as
              NCE shall reasonably request in writing from time to time,
              including, without limitation, accepting legal representation
              with respect to such claim by an attorney reasonably selected
              by NCE.

         (3)  Cooperate with NCE in good faith in order to effectively
              contest such claim.

         (4)  Permit NCE to participate in any proceedings relating to such
              claim.

         NCE shall bear and pay directly all costs and expenses (including
         additional interest and penalties) incurred in connection with such
         contest and shall indemnify and hold Executive harmless, on an
         after-tax basis, for any Excise Tax or income tax, including
         interest and penalties with respect thereto, imposed as a result of
         such representation and payment of costs and expenses.  NCE shall
         control all proceedings taken in connection with such contest.  If
         NCE directs Executive to pay such claim and sue for a refund, NCE
         shall advance the amount of such payment to Executive, on an
         interest-free basis and shall indemnify and hold Executive harmless,
         on an after-tax basis, from any Excise Tax or income tax, including
         interest or penalties with respect thereto, imposed with respect to
         such advance or with respect to any imputed income with respect to
         such advance.

     (c) If, after the receipt by Executive of an amount paid or advanced by
         NCE pursuant to this Section, Executive becomes entitled to receive
         any refund with respect to such Excise Tax, Executive shall within
         10 days pay to NCE the Gross-Up Payment or Gross-Up Underpayment
         related to the amount of such refund (together with any interest
         paid or credited thereon, after adjustment for any taxes applicable
         to such interest or repayment).

     (d) For purposes of this Sec. 4.5, "Independent Tax Counsel" means a
         lawyer, a certified public accountant with a nationally recognized
         accounting firm, or a compensation consultant with a nationally
         recognized actuarial and benefits consulting firm, with expertise in
         the area of executive compensation tax law, who shall be selected by
         Executive and shall be reasonably acceptable to NCE.  The fees and
         disbursements of Independent Tax Counsel shall be paid by NCE.

            Sec. 4.6  No Offsets.  Executive shall be under no obligation to
seek other employment or otherwise mitigate the amounts payable by NCE under
Sec. 4.  There will be no offset against the amounts payable under Sec. 4 on
account of any compensation or earnings from any subsequent employment or
self-employment of Executive, except as provided in Sec. 4.3(c).  NCE's
obligations to make the payments provided for this Agreement and otherwise to
perform its
                                       8

<PAGE>

obligations hereunder shall not be affected by any set-off, counterclaim,
recoupment, defense or other claim, right or action which NCE may have
against Executive or others, unless Executive has given written consent to
such as set-off or is subject to a final judgment in favor of NCE.

            Sec. 5  SOURCE OF PAYMENTS.  Except as otherwise provided in this
section, all payments provided in Sec. 4 shall be paid from the general funds
of NCE, and NCE shall not be required to establish a special or separate fund
or otherwise segregate assets to assure payments will be made under this
Agreement.

     (a) On or before the date a Change In Control occurs (or as soon as
         reasonably possible following a Change In Control for which NCE has
         no advance warning), NCE will establish a trust in the form
         generally known as a "rabbi trust", and will immediately deposit
         into that trust an amount equal to the total of the estimated
         amounts to which Executive would become entitled under Sections 4.1,
         4.4 and 4.5 in the event the requirements of Sec. 3 are satisfied.

         (1)  The trustee shall be a national bank or trust company selected
              by NCE and reasonably acceptable to Executive.

         (2)  The amount to be deposited in the trust shall be determined by
              an actuary employed by a nationally recognized actuarial and
              benefits consulting firm selected by NCE which shall be
              reasonably acceptable to Executive.

     (b) In the event Executive satisfies the requirements of Sec. 3 and
         becomes entitled to payments under Sec. 4, those payments shall be
         made from the assets of the trust to the extent those assets are
         sufficient.  NCE's obligations under this Agreement shall be reduced
         to the extent of the payments made from the trust.

     (c) If Executive does not become eligible under Sec. 3 within 36 months
         after the date a Change In Control occurs, or if an event described
         in Sec. 3.1 occurs that makes Executive ineligible for benefits, the
         trust shall terminate and its assets shall be returned to NCE.

Notwithstanding the foregoing provisions of this section, it is expressly
understood and agreed that Executive (and any dependent, beneficiary or
estate of Executive who becomes entitled to payments hereunder) shall at all
times be an unsecured creditor of NCE, and shall have no rights to assets of
NCE (including assets held in any trust) that are superior to other unsecured
creditors of NCE.  Nothing in this Agreement shall be interpreted as creating
a constructive trust over any assets of NCE or creating a fiduciary
relationship between NCE and Executive or any other person.

            Sec. 6  ENFORCEMENT.  The rights and obligations created under
this Agreement shall be enforced as follows:

     (a) Arbitration.  In the event of any dispute or difference between NCE
         and Executive with respect to the subject matter or interpretation
         of this Agreement or the enforcement of rights hereunder, such
         dispute or difference shall be submitted to arbitration.  The
         arbitrator or arbitrators shall be selected by agreement of the
         parties or, if they cannot
                                       9

<PAGE>

        agree on an arbitrator or arbitrators within 30 days after the date one
         party notified the other of the desire to have the question settled
         by arbitration, then the arbitrator or arbitrators shall be selected
         by the American Arbitration Association (the "AAA") in Denver,
         Colorado upon the application of either party.  The determination
         reached in such arbitration shall be final and binding on both
         parties without any right of appeal or further dispute.  Execution
         of the determination by such arbitrator may be sought in any court
         of competent jurisdiction.  In any such arbitration or subsequent
         proceeding, Executive shall be entitled to seek both legal and
         equitable relief and remedies, including but not limited to specific
         performance of NCE's obligations under this Agreement.  The
         arbitrators shall not be bound by judicial formalities and may
         abstain from following the strict rules of evidence and shall
         interpret this Agreement as an honorable engagement and not merely
         as a legal obligation.  Unless otherwise agreed by the parties, any
         such arbitration shall take place in Denver, Colorado, and shall be
         conducted in accordance with the Rules of the AAA.

     (b) Costs and Expenses.  NCE will pay all fees of the arbitrators,
         whether the arbitration is initiated by NCE or Executive.  In
         addition, NCE will pay, upon written demand from Executive, all
         legal fees and expenses which Executive may reasonably incur in
         connection with the arbitration or subsequent judicial proceedings
         to enforce this Agreement, plus interest on any award at the
         applicable federal rate, under Code Section 7872(f)(2); provided,
         however, that this sentence shall not apply unless Executive
         recovers through such action some amount or benefit (regardless of
         size or value) in excess of the amount NCE had offered prior to
         commencement of the action.

     (c) Survival.  The obligations under this Sec. 6 shall survive the
         termination of this Agreement for any reason, whether such
         termination is by NCE, by Executive, upon the expiration of this
         Agreement, or otherwise.

            Sec. 7  SUCCESSOR EMPLOYER.  If Executive becomes an employee of
another entity as a result of a transaction in which NCE consolidates or
merges into or with such entity or transfers all or substantially all of its
assets to such entity (whether or not the transaction constitutes a Change In
Control), the term "NCE" in this Agreement shall mean such other entity and
this Agreement shall continue in full force and effect.  If Executive becomes
an employee of a wholly-owned subsidiary of NCE (or of a successor entity
described in the previous sentence), Executive shall be deemed for purposes
of this Agreement to continue as an employee of NCE (or the successor entity)
while employed by such subsidiary.

            Sec. 8  MISCELLANEOUS PROVISIONS.

            Sec. 8.1  Amendment.  This Agreement may be amended or modified
only in writing, signed by both parties.

            Sec. 8.2 Tax Withholding.  NCE may withhold from any payments
made under this Agreement all federal, state or other taxes which it
determines to be required pursuant to any law or governmental regulation or
ruling.

                                       10

<PAGE>

            Sec. 8.3  Death of Executive Following Entitlement to Payments.
If Executive dies after becoming eligible under Sec. 3, but before all
payments provided under Sec. 4 have been made, the remaining payments shall
be made to the beneficiary designated by Executive in the most recent written
instrument filed with NCE prior to Executive's death which specifically
refers to this Agreement.  Executive may revoke such a beneficiary
designation at any time, without consent of any beneficiary, and file a new
designation.  If no effective beneficiary designation is on file with NCE at
the time of Executive's death, the remaining payments shall be paid to
Executive's estate.

            Sec. 8.4  Entire Agreement.  This Agreement contains the entire
understanding of the parties with regard to all matters contained herein.
There are no other agreements, conditions or representations, oral or
written, expressed or implied, with regard thereto.  This Agreement
supersedes all prior agreements relating to separation payments following a
Change In Control between Executive and NCE or any predecessor to NCE.
However, this Agreement shall not operate to reduce any benefit or
compensation to which Executive is entitled under any plan, policy or program
maintained by NCE that does not specifically relate to payments following a
Change In Control, including but not limited to benefits or compensation
under incentive plans, qualified retirement plans, or nonqualified
supplemental or excess pension or savings plans.

            Sec. 8.5  Assignment.  NCE may in its sole discretion assign this
Agreement to any entity which succeeds to the business of NCE through merger,
consolidation, a sale of all or substantially all of the assets of NCE, or
any similar transaction.  Executive acknowledges that the services to be
rendered by Executive are unique and personal.  Accordingly, Executive may
not assign any of Executive's rights or obligations under this Agreement.

            Sec. 8.6  Successors.  Subject to Sec. 8.5, the provisions of
this Agreement shall be binding upon the parties hereto, upon any successor
to or assign of NCE, and upon Executive's heirs and the personal
representative of Executive or Executive's estate.

            Sec. 8.7  No Attachment.  Except as required by law, no right to
receive payments under this Agreement shall be subject to anticipation,
commutation, alienation, sale, assignment, encumbrance, charge, pledge or
hypothecation or to execution, attachment, levy or similar process or
assignment by operation of law, and any attempt, voluntary or involuntary, to
effect any such action shall be null, void and of no effect.

            Sec. 8.8  Notices.  Any notice required to be given under this
Agreement shall be in writing and shall be delivered either in person or by
certified or registered mail, return receipt requested.  Any notice by mail
shall be addressed as follows:

              If to NCE, to:

              New Century Energies, Inc.
              1225 17th Street
              Denver, Colorado   80202
              Attention:  Marilyn E. Taylor, Vice President/Human Resources

                                       11

<PAGE>

              If to Executive, to:
              _"Address"___________________
              ____________________________
              ____________________________

or to such other addresses as either party may designate in writing to the
other party from time to time.

            Sec. 8.9  Waiver of Breach.  Any waiver by either party of
compliance with any provision of this Agreement by the other party shall not
operate or be construed as a waiver of any other provision of this Agreement,
or of any subsequent breach by such party of a provision of this Agreement,
unless the waiver specifically states that it is a continuing waiver or that
it applies to other provisions.  No waiver by NCE shall be valid unless in
writing and signed by the chief executive officer of NCE.  No waiver by
Executive shall be valid unless in writing and signed by Executive.

            Sec. 8.10  Severability.  If any one or more of the provisions
(or portions thereof) of this Agreement shall for any reason be held by a
final determination of a court of competent jurisdiction to be invalid,
illegal, or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provision (or portions of the
provisions) of this Agreement, and the invalid, illegal or unenforceable
provisions shall be deemed replaced by a provision that is valid, legal and
enforceable and that comes closest to expressing the intention of the parties
hereto.

            Sec. 8.11  Governing Law.  This Agreement shall be interpreted
and enforced in accordance with the laws of the State of Colorado, without
giving effect to conflict of law principles.

            Sec. 8.12  Headings.  The headings of sections herein are
included solely for convenience of reference and shall not control the
meaning or interpretation of any of the provisions of this Agreement.

            Sec. 8.13  Counterparts.  This Agreement may be executed by
either of the parties hereto in counterparts, each of which shall be deemed
to be an original, but all such counterparts shall constitute a single
instrument.

            Sec. 9   WAIVER OF SEPARATION AGREEMENT (Applicable to former 
Public Service Company of Colorado Executives).   Executive is currently a
party to a Separation Agreement with Public Service Company of Colorado
("PSC"), which was originally effective August 22, 1995, and which has been
amended several times prior to the date of this Agreement.  (That Separation
Agreement, including all subsequent amendments of it executed prior to August
1, 1997, is hereinafter called the "Separation Agreement".)

            Executive is entitled to certain severance payments and other
benefits under the Separation Agreement if Executive's employment terminates
under certain conditions, or if Executive has a "constructive discharge",
following a "change in control" of PSC.  Executive understands that the
merger of PSC and Southwestern Public Service Co. to form NCE is a "change in
control" under the Separation Agreement.  Paragraph 13 of the Separation
Agreement allows Executive to waive all rights under the Separation Agreement
by executing a written instrument.

            In consideration of the benefits described in this Agreement,
Executive hereby waives and surrenders all rights that Executive or any of
Executive's beneficiaries, survivors, heirs, successors 
                                       12

<PAGE>

or assigns may have under the Separation  Agreement  against NCE, PSC, or any of
their predecessors,  successors or affiliates,  either now or at any time in the
future.  The waiver  includes,  but is not  limited  to,  all  rights  under the
Separation  Agreement to severance benefits,  continuation of employee benefits,
or  increases in benefits  provided  under  employee  benefit  plans  (including
nonqualified supplemental plans). For purposes of Paragraph 13 of the Separation
Agreement,  Executive's  signature below constitutes a complete,  continuing and
irrevocable waiver of all the terms and conditions of the Separation  Agreement,
both at the present time and at all times in the future.

            IN WITNESS WHEREOF, NCE has caused this Agreement to be executed
by its duly authorized officer, and Executive has executed this Agreement,
all effective as of the date first above written.

EXECUTIVE                           NEW CENTURY ENERGIES, INC.

__________________________________  By:
__________________________________
(Executive Name)                          Chairman and Chief Executive Officer
                                          or Vice Chairman of the Board



                                       13

<PAGE>


               Schedule to Form of Change in Control Agreement


                                Effective
        Executive               Date               

      Bill D. Helton           August 1, 1997

      Wayne H. Brunetti        August 1, 1997

      Marilyn E. Taylor        August 1, 1997

      Richard C. Kelly         August 1, 1997

      Doyle R. Bunch II        August 1, 1997

      Ross C. King             August 1, 1997

      David M. Wilks           August 1, 1997

      Henry Hamilton           August 1, 1997

      Gary L. Gibson           August 1, 1997

      Teresa S. Madden         August 1, 1997

      James D. Steinhilper     August 1, 1997*

      John McAfee              August 1, 1997

      Paul J. Bonavia          December 1, 1997

      Brian P. Jackson         December 1, 1997

      James T. Petillo         September 22, 1998

      Patricia Vincent         January 1, 1999

* Effective January 1, 1999 no longer employee of NCE

                                                                  Exhibit 10(d)1

New Century Energies, Inc. Directors'
Voluntary Deferral Plan

Article 1. Establishment and Purpose of the Plan

      1.1  Establishment.  New Century Energies,  Inc., a Delaware  corporation,
(the  "Company"),  hereby  establishes,  as of the effective  date of the merger
between  Public  Service  Company of Colorado and  Southwestern  Public  Service
Company,  a deferred  compensation  plan for nonemployee  directors as described
herein,  which  shall be  known as the New  Century  Energies,  Inc.  Directors'
Voluntary  Deferral Plan (the "Plan").  The Plan shall assume the liabilities of
the  predecessor   companies  under  the  Public  Service  Company  of  Colorado
Directors'  Voluntary  Deferral Plan or the Southwestern  Public Service Company
Directors' Deferred  Compensation Plan with respect to any nonemployee  director
of either such  predecessor  company who becomes a  nonemployee  director of the
Company.

      1.2 Purpose.  The Plan is intended to provide a means whereby  nonemployee
directors  of the  Company  may  voluntarily  defer  all or a  portion  of their
compensation, subject the terms of the Plan.

Article 2. Administration

      The  Plan  shall  be  administered  by  the  Compensation  Committee  (the
"Committee")  of the  Board of  Directors  (the  "Board")  of the  Company.  The
Committee is authorized to interpret the Plan and may, from time to time,  adopt
such rules and  regulations,  consistent  with the provisions of the Plan, as it
may deem  advisable  to  carry  out the  Plan.  All  determinations  made by the
Committee shall be final.

      The Vice  President  of  Human  Resources  of the  Company  shall,  as the
delegatee of the Committee, be responsible for the day-to-day  administration of
the Plan,  including but not limited to, accepting  deferral  election forms and
accounting for deferrals and distributions under the Plan.

Article 3. Participation in the Plan

      3.1 Eligibility.  All nonemployee  directors of the Company  ("Directors")
shall be eligible to  participate in the Plan. A Director shall be considered to
be a Director  until the close of business on the day  preceding  the earlier of
(i) the first date the individual  becomes a common-law  employee of the Company
or any affiliate of the Company, or (ii) the first date the individual ceases to
be a member of the Board for any reason whatsoever.

      3.2 Election to  Participate.  An eligible  Director may elect to become a
participant in the Plan ("Participant") by electing to defer all or a portion of
his/her  annual  retainer and meeting  fees  ("Compensation").  A separate  such
election shall be allowed with respect to the cash portion of  Compensation  and
with respect to the equity portion of Compensation, with the deferral percentage
with respect to each portion being in such  increments as shall be prescribed by
the Committee. Any such



<PAGE>


election  shall  apply to the  Participant's  Compensation  earned  on or after
January 1 of the following calendar year.

      Notwithstanding  the  foregoing,  with respect to an individual  who first
becomes a  Director  on a day other  than the first day of a  calendar  year and
elects  to  participate  in that  year,  any such  election  shall  apply to the
Participant's  Compensation  during  the  calendar  year in which  he/she  first
becomes a Director and subsequent years.

      3.3 Time and Manner of Making  Elections.  Any election as to Compensation
which may be made by a Participant  must be made on or before December 31 of the
year preceding the calendar year to which the election relates;  provided,  that
with respect to an individual  who first becomes a Director  after the beginning
of a calendar year, any such election with respect to the calendar year in which
he/she  first  becomes a Director  must be made  within  thirty  (30) days after
becoming a Director.  With respect to deferrals of  Compensation to be earned in
1997 after the effective date of the Plan,  elections must be made within thirty
(30) days after the effective date of the Plan.  All deferral  elections must be
made on such form as shall be prescribed for this purpose by the Committee.

      3.4 Nature of Elections. Any election as to Compensation which may be made
by a  Participant  with respect to any calendar year shall be  irrevocable  once
made; provided,  however,  that a Director may stop participation in the Plan or
change the  percentage  deferred by delivering  written notice to the Company by
December 31 in the year prior to the year in which Compensation is earned.  Such
written  notice of  termination  of  participation  or change in the  percentage
deferred must be made on such form as may be prescribed  for this purpose by the
Committee.

      Plan  provisions  to the  contrary  notwithstanding,  any  election  as to
Compensation  made by a Participant  with respect to any calendar  year,  unless
changed or revoked by the  Participant  prior to the  expiration of the time for
making such election with respect to each  subsequent  calendar  year,  shall be
deemed to have been made with respect to each subsequent calendar year.

Article 4. Deferred Compensation Account

      4.1  Directors'  Accounts.   The  Company  shall  establish  and  maintain
individual  bookkeeping  accounts  to reflect  deferrals  made by a  Participant
pursuant to this Plan and accounts  transferred  from the Public Service Company
of  Colorado  Directors'  Voluntary  Deferral  Plan or the  Southwestern  Public
Service  Company   Directors'   Deferred   Compensation   Plan.  Two  individual
bookkeeping  accounts shall be maintained with respect to each Participant to be
referred to as a "Cash Account" and a "Stock Account".

      The Participant  shall designate that deferrals made pursuant to this Plan
are to be  credited  to either the Cash  Account or the Stock  Account or that a
portion of such  deferrals,  in such  increments  as shall be  prescribed by the
Committee,  are to be  credited  to  either  of the Cash  Account  or the  Stock
Account.  Such designation shall be made on such form as shall be prescribed for
this purpose by the Company, and

                                   2



<PAGE>


shall continue in effect with respect to all subsequent  deferrals until changed
effective as of any January 1 by the Participant.

      The  appropriate  account  shall be  credited  as of the  date the  amount
deferred otherwise would have become due and payable to the Participant.

      4.2  Additions to Cash  Accounts.  The balance of a Cash Account  shall be
reflected in United States Dollars.

      As of the first day of the month after the effective  date of the Plan, an
opening balance shall be credited to the Cash Account of each Participant  equal
to the balance  credited to the Participant  under the Public Service Company of
Colorado Director's Voluntary Deferral Plan, or the balance credited to the Cash
Account  of the  Participant  under  the  Southwestern  Public  Service  Company
Directors'  Deferred  Compensation  Plan, as appropriate,  as of the immediately
preceding day.

      The Cash Account  shall accrue  interest each year at the rate on 1 0-Year
Treasury Notes as of the last auction date of the prior year, or such other rate
as shall be determined by the Compensation  Committee.  Each  Participant's Cash
Account  shall be  credited  with  interest  on the last day of each  month.  An
interest rate, which when compounded  monthly equals the  pre-determined  annual
interest accrual, shall be applied to each month's beginning balance.

      4.3 Additions to Stock  Accounts.  The balance of a Stock Account shall be
reflected in "Stock Units".

      As of the effective date of the Plan, an opening balance shall be credited
to  the  Stock  Account  of  each  Participant  who  was a  participant  in  the
Southwestern Public Service Company Directors' Deferred  Compensation Plan equal
to the  number  of  shares  or  units  credited  to  the  Stock  Account  of the
Participant  under such plan as of the  immediately  preceding  day converted to
Stock  Units on such  basis as  shares of common  stock of  Southwestern  Public
Service  Company are  converted in the merger into shares of common stock of the
Company ("Company Stock").

      As of the date on which  Compensation  affected by a deferral election and
to be credited to a  Participant's  Stock Account would otherwise have been paid
to the  Participant,  the  Participant's  Stock Account shall be credited with a
number of Stock  Units equal to the number of shares of Company  Stock,  to four
decimal  places,  that could have been  purchased  with such  deferrals at a per
share price equal to the  arithmetic  mean between the highest and lowest quoted
selling  prices on the New York Stock  Exchange  Composite  Tape on the date the
Compensation would otherwise have been paid to the Participant (or, if there are
no sales on such date,  then such  arithmetic mean on the next succeeding day on
which there are sales will be used).

      As of the  payment  date of any cash  dividend  on  outstanding  shares of
Company Stock, each Participant's  Stock Account shall be credited with a number
of  additional  Stock Units equal to the number of shares of Company  Stock,  to
four decimal  places,  that could have been  purchased  with the base amount (as
defined  below) at a per share price equal to the  arithmetic  mean  between the
highest and lowest selling prices

                                        3



<PAGE>


on the New  York  Stock  Exchange  Composite  Tape for the  payment  date of the
dividend (or, if there are no sales on that date,  then the  arithmetic  mean on
the next  succeeding  day on which  there  are sales  will be  used).  The "base
amount" for  purposes of this  calculation  means the dollar  amount of the cash
dividends  that  would have been paid with  respect  to a number of  outstanding
shares of Company Stock equal to the number of Stock Units (including fractions)
credited  to the  Participant's  Stock  Account  as of the  record  date of such
dividend  (assuming  that  fractional  shares  could be held of record  and that
dividends were paid with respect thereto).

      As of the  payment  date of any  stock  dividend,  stock  split  or  other
distribution on outstanding  shares of Company Stock, each  Participant's  Stock
Account shall be credited  with a number of additional  Stock Units equal to the
number of shares of Company Stock that would have been  distributed with respect
to a number of outstanding  shares of Company Stock equal to the number of Stock
Units (including  fractions)  credited to the Participant's  Stock Account as of
the record date of such  dividend,  split or other  distribution  (assuming that
fractional  shares  could be held of  record  and that  the  dividend,  split or
distribution  was paid with respect  thereto) or the number of shares of Company
Stock that  could  have been  purchased  with the cash  equivalent  of any other
distribution. In the case of a stock dividend, stock split or other distribution
where the  ex-date is after the record  date,  any Stock  Units  credited to the
Participant's  Stock  Account as of the record date of such  dividend,  split or
other distribution but with respect to which a distribution has been made to the
Participant  after the record date and prior to the ex-date will be  disregarded
for purposes of determining the additional credit under this paragraph.

      In the event that the Company  shall at any time be  consolidated  with or
merged with any other  corporation and the Company is not the surviving  entity,
the amounts credited to each  Participant's  Stock Account shall be a continuing
liability of the continuing entity and the number of Stock Units credited to the
Participant's  Stock Account  immediately  prior to the merger or  consolidation
(including  fractions) shall be converted to an equivalent number of Stock Units
based upon the common  stock of such  continuing  entity  (including  fractional
shares)  or other  consideration  on the same  basis as issued  and  outstanding
shares of  Company  Stock are  exchanged  for shares of such  continuing  entity
(assuming  fractional  shares could have been so exchanged  and that  fractional
shares of the continuing entity would have been issued) or other  consideration.
Alternatively,  each Participant may demand,  or the Compensation  Committee may
require,  that a payment be made as of the day preceding  the effective  date of
such consolidation or merger of a cash amount equal to the number of Stock Units
credited  to the  Participant's  Stock  Account  on such day  multiplied  by the
arithmetic  mean  between the highest  and lowest  selling  prices for shares of
Company Stock on the New York Stock Exchange  Composite Tape on such day (or, if
there are no sales on such day, such  arithmetic  mean on the next preceding day
on which there are such sales will be used). Such demand made by the Participant
shall be in writing and shall not be effective  unless filed with the  Secretary
of the  Company  not later than the day  preceding  the  effective  date of such
consolidation or merger.

      4.4 Charges  Against  Accounts.  Any  payments  made to a  Participant  or
his/her  beneficiary shall be charged against the Participant's  Cash Account or
Stock Account, as appropriate.

                                        4



<PAGE>


      4.5  Designation  of  Beneficiary.  Each  Participant  shall  designate  a
beneficiary or beneficiaries who, upon the Participant's death, will receive the
amounts that otherwise would have been paid to the  Participant  under the Plan.
All  designations  shall be  signed  by the  Participant  and shall be made on a
"Beneficiary  Designation  Form." Each designation  shall be effective as of the
date delivered by the  Participant  to the Vice President of Human  Resources of
the Company.

      Participants may change their designations of beneficiary by execution and
delivery of a new  Beneficiary  Designation  Form to the Vice President of Human
Resources  of the  Company.  The  payment of amounts  under the Plan shall be in
accordance with the last unrevoked  Beneficiary  Designation  Form that has been
signed by the Participant and delivered by the Participant to the Vice President
of Human Resources prior to the Participant's death.

      In the event that all  beneficiaries  named by a  Participant  pursuant to
this Section 4.5 predecease  the  Participant,  the deferred  amounts that would
have been paid to the Participant or the  Participant's  beneficiaries  shall be
paid to the Participant's estate.

      In the event that a Participant  does not designate a beneficiary,  or for
any reason such  designation  is  ineffective,  in whole or in part, the amounts
that  otherwise  would have been paid to the  Participant  or the  Participant's
beneficiaries under the Plan shall be paid to the Participant's estate.

Article 5. Payment Generally

      5.1 Payment  Generally.  Payment of a Participant's  Cash Account shall be
made in a single lump-sum cash payment or in five (5) annual cash  installments,
as elected by the Participant, beginning as soon as administratively practicable
following  termination as an active member of the Board.  The Participant  shall
make his/her election at the time of his/her  deferral  election on such form as
shall be prescribed for this purpose by the Committee.

      Payment  of a  Participant's  Stock  Account  shall be made in  shares  of
Company  Stock  in  certificate  form,  with the  payment  to be made as soon as
administratively  practicable  following  termination as an active member of the
Board.  The number of shares paid will equal the number of Stock Units  credited
to the  Participant's  Stock Account on his/her last day of service as an active
member of the  Board  (with a cash  equivalent  paid for any  fraction).  If any
additional Stock Units will be credited to the Participant's Stock Account after
his/her  last day of service  as an active  member of the Board as a result of a
cash or stock  dividend  paid after such date,  then,  at the  discretion of the
Committee, the payment to the Participant or his/her beneficiary may be deferred
until after the payment date of such  dividend or an  additional  payment may be
made  consisting of an additional  number of shares equal to the number of Stock
Units credited as a result of such dividend.

      5.2 Hardship Withdrawals.  The Committee shall have the authority to alter
the timing or manner of payment of deferred amounts in the event the Participant
establishes, to the satisfaction of the Committee, severe financial hardship. In
such

                                        5



<PAGE>


event,  the  Committee  may,  in its  sole  discretion,  take one or more of the
following actions:

     (i)  Authorize  the  cessation of deferrals by such  Participant  under the
          Plan.

     (ii) Provide  that all, or a portion,  of the balance of the  Participant's
          Cash Account and/or Stock Account shall  immediately be paid in a lump
          sum cash payment.

    (iii) Provide  that all, or a portion,  of the  installment  payable  over a
          period of time shall immediately be paid in a lump sum cash payment.

     (iv) Provide  for  such  other  installment   payment  schedule  as  deemed
          appropriate by the Committee under the circumstances.

      For purposes of this Section 5.2, "severe  financial  hardship" shall mean
any  financial   hardship   resulting  from   extraordinary   and  unforeseeable
circumstances  arising  as a result  of one or more  recent  events  beyond  the
control of the Participant.  In any event, payment may not be made to the extent
such emergency is or may be relieved:  (i) through reimbursement or compensation
by insurance or otherwise,  (ii) by liquidation of Participant's  assets, to the
extent the  liquidation  of such assets would not itself cause severe  financial
hardship;  and (iii) by cessation of deferrals  under the Plan.  Withdrawals  of
amounts  because of a severe  financial  hardship  may only be  permitted to the
extent  reasonably  necessary to satisfy the hardship.  Examples of what are not
considered  to be  severe  financial  hardships  include  the  need  to  send  a
Participant's   child  to  college  or  the  desire  to  purchase  a  home.  The
Participant's Cash Account and Stock Account will be adjusted in accordance with
the Plan up to the date of distribution.

      The severity of the financial  hardship  shall be judged by the Committee.
The Committee's  decision with respect to the severity of financial hardship and
the manner in which, if at all, the participant's future deferral  opportunities
shall  cease,  and/or the manner in which,  if at all,  the  payment of deferred
amounts  to the  Participant  shall be  altered  or  modified,  shall be  final,
conclusive, and not subject to appeal.

      5.3  Death or  Disability.  If a  Participant  dies or  becomes  disabled,
payment  of the entire  remaining  balance of  his/her  Cash  Account  and Stock
Account shall be made in a single  lump-sum  payment within thirty (30) calendar
days following death or termination as an active member of the Board.

      Payment  of the  Participant's  Cash  Account  (or the  remaining  portion
thereof) shall be made in cash.

      Payment  of a  Participant's  Stock  Account  shall be made in  shares  of
Company  Stock in  certificate  form.  The number of shares  paid will equal the
number of Stock Units  credited to the  Participant's  Stock  Account on his/her
last day of service  as an active  member of the Board  (with a cash  equivalent
paid for any fraction).  If any  additional  Stock Units will be credited to the
Participant's  Stock  Account  after  his/her  last day of  service as an active
member of the Board as a result of a cash or stock

                                        6



<PAGE>


dividend paid after such date,  then, at the  discretion of the  Committee,  the
payment to the  Participant may be deferred until after the payment date of such
dividend or an additional payment may be made consisting of an additional number
of  shares  equal to the  number  of Stock  Units  credited  as a result of such
dividend.

      For purposes of this  section,  disability  shall mean total and permanent
disability  within the meaning of the pension plan sponsored by the Company,  as
determined in good faith by the Committee,  upon receipt of sufficient competent
medical advice from one or more individuals,  selected by the Committee, who are
qualified to give professional medical advice.

Article 6. Rights of Participants

      6.1 Contractual Obligation. The Plan shall create a contractual obligation
on  the  part  of the  Company  to  make  payments  to or  with  respect  to the
Participant when due under the terms of the Plan.  Payments shall be made out of
the general funds of the Company except as provided in Section 6.2.

      6.2 Unsecured  Interest. No  Participant or party  claiming an interest in
deferred amounts shall have any interest whatsoever in any specific asset of the
Company. To the extent that any party acquires a right to receive payments under
the  Plan,  such  right  shall be  equivalent  to that of an  unsecured  general
creditor of the Company.

      The Company may  establish  one or more  trusts,  with such trustee as the
Committee may approve,  for the purpose of providing for the payment of deferred
amounts.  Such  trust(s) may be  irrevocable,  but the assets  thereof  shall be
subject  to the claims of the  Company's  general  creditors.  To the extent any
deferred  amounts  under the Plan are  actually  paid from any such  trust,  the
Company shall have no further obligation with respect thereto, but to the extent
not so paid, such deferred amounts and contributions shall remain the obligation
of, and shall be paid by, the Company.

Article 7. Withholding of Taxes

      The Company hereby reserves the right to require  Participants to remit to
the  Company  an  amount  sufficient  to  satisfy  Federal,   state,  and  local
withholding  tax  requirements,  or to deduct from payments made pursuant to the
Plan, or from other  payments due from the Company to the  Participant,  amounts
sufficient to satisfy withholding tax requirements.

Article 8. Miscellaneous

      8.1  Nontransferability.  Participants'  rights to deferred  amounts,  and
interest  earned  thereon  under the Plan as well as other  compensation  earned
under the Plan may not be sold, transferred, assigned, or otherwise alienated or
hypothecated,  other than by will or by the laws of descent and distribution. In
no event shall the Company  make any payment  under the Plan to any  assignee or
creditor  of a  Participant.  Any funds so set aside or  acquired  shall  remain
subject to the claims of the creditors of the Company, present and future.

                                        7



<PAGE>


      8.2  Severability.  In the event any  provision  of the Plan shall be held
illegal or invalid for any reason, the illegality or invalidity shall not affect
the remaining parts of the Plan, and the Plan shall be construed and enforced as
if the illegal or invalid provision had not been included.

      8.3 Amendment and  Termination.  The Company hereby  reserves the right to
amend, modify, or terminate the Plan or any part thereof,  from time to time, by
action of the  Committee  with  approval  by the  Board;  provided  that no such
amendment or  termination  shall in any  material  manner  adversely  affect any
Participant's rights to deferred amounts,  together with interest earned thereon
as well as other compensation  earned under the Plan, without the consent of the
Participant.

      8.4  Successors.  All  obligations  of the Company under the Plan shall be
binding on any successor to the Company, whether the existence of such successor
is the  result of a direct  or  indirect  purchase,  merger,  consolidation,  or
otherwise,  of all or  substantially  all of the business  and/or  assets of the
Company.  Upon the  occurrence of such an event,  the term  "Company" as used in
this Agreement  shall be deemed to refer to such successor or survivor entity or
entities.

      8.5 Laws  Governing.  This plan shall be construed in accordance  with and
governed by the laws of the State of Colorado.

      8.6 Costs of the Plan. All costs of  implementing  and  administering  the
Plan shall be borne by the Company.

      8.7 Gender and Number.  Except where  otherwise  indicated by the context,
any masculine term used herein shall also include the feminine; the plural shall
include the singular, and the singular shall include the plural.


                                        8


                                                                  Exhibit 10(e)1












                             NEW CENTURY ENERGIES
                    SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                     (As Adopted Effective January 1, 1998)



<PAGE>


                             NEW CENTURY ENERGIES
                    SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                              Table of Contents

ARTICLE I      GENERAL

   Sec. 1.1    Name of Plan................................................   1
   Sec. 1.2    Purpose.....................................................   1
   Sec. 1.3    Effective Date..............................................   1
   Sec. 1.4    Company.....................................................   1
   Sec. 1.5    Participating Employers.....................................   1
   Sec. 1.6    Construction and Applicable Law.............................   1

ARTICLE II     DEFINITIONS

   Sec. 2.1    Accrual Percentage..........................................   2
   Sec. 2.2    Actuarial Equivalent........................................   2
   Sec. 2.3    Beneficiary.................................................   2
   Sec. 2.4    Board.......................................................   2
   Sec. 2.5    Change In Control...........................................   2
   Sec. 2.6    Committee...................................................   3
   Sec. 2.7    Final Average Compensation..................................   4
   Sec. 2.8    Normal Retirement Benefit...................................   4
   Sec. 2.9    Normal Retirement Date......................................   4
   Sec. 2.10   Participant.................................................   4
   Sec. 2.11   Plan Year...................................................   4
   Sec. 2.12   PSCo SERP...................................................   4
   Sec. 2.13   Retirement Plan.............................................   4
   Sec. 2.14   SPS SERP....................................................   4
   Sec. 2.15   Successor Employer..........................................   4
   Sec. 2.16   Year of Vesting Service.....................................   4

ARTICLE III    PARTICIPATION

   Sec. 3.1    Eligibility for Participation...............................   5
   Sec. 3.2    Cessation of Participation..................................   5
   Sec. 3.3    No Guarantee of Employment..................................   5

ARTICLE IV     BENEFITS

   Sec. 4.1    Amount of Normal Retirement Benefit.........................   5
   Sec. 4.2    Special Provisions for PSCo, and SPS SERP Participation.....   6
   Sec. 4.3    Vesting of Benefit .........................................   6

ARTICLE V      FORM OF PAYMENT AND COMMENCEMENT DATE

   Sec. 5.1    Normal Form ................................................   7
   Sec. 5.2    Reduction for Early Retirement .............................   7
   Sec. 5.3    Optional Forms .............................................   7
   Sec. 5.4    Commencement Date ..........................................   7
   Sec. 5.5    Disability Before Retirement ...............................   7
   Sec. 5.6    Death Prior to Termination of Employment ...................   7
                                      i


<PAGE>


   Sec. 5.7    Death After Termination of Employment ......................   8
   Sec. 5.8    Benefit Upon Change In Control .............................   8

ARTICLE VI     ADMINISTRATION

   Sec. 6.1    Administration by the Committee ............................   8
   Sec. 6.2    Withholding of Taxes .......................................   8
   Sec. 6.3    Unfunded and Unsecured Plan ................................   9

ARTICLE VII    AMENDMENT AND TERMINATION

   Sec. 7.1    Amendment ..................................................   9
   Sec. 7.2    Termination of Plan ........................................   9

ARTICLE VIII   MISCELLANEOUS

   Sec. 8.1    Designation of Beneficiary .................................   9
   Sec. 8.2    Benefits May Not Be Assigned or Alienated ..................   9
   Sec. 8.3    Headings ...................................................  10
   Sec. 8.4    Capitalized Definitions ....................................  10
   Sec. 8.5    Gender .....................................................  10
   Sec. 8.6    Use of Compounds of Word "Here . ...........................  10
   Sec. 8.7    Construed as a Whole .......................................  10


                                     -2-



<PAGE>


                             NEW CENTURY ENERGIES
                    SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                                  ARTICLE I

                                   GENERAL

        Sec. 1.1  Name of Plan. The name of this plan is "New Century
Energies Supplemental Executive Retirement Plan" (referred to hereinafter as
the "Plan").

        Sec. 1.2 Purpose.  The Plan has been established to provide supplemental
retirement  benefits  and  certain  benefits  upon  disability  or death  before
retirement to certain select management or highly compensated  employees so that
such employees may be retained and their  productive  efforts  encouraged.  This
Plan is a  replacement  as of the  Effective  Date of the PSCo  SERP and the SPS
SERP. On and after the Effective  Date,  the benefits to which  individuals  are
entitled  under  said SERPs are  incorporated  in this Plan and they cease to be
eligible for any separate benefit under those SERPs.

     (a) If the  individual is a Participant in this Plan on or after January 1,
         1998, the benefit shall be determined  and paid solely  pursuant to the
         terms of this Plan, and the provisions of the PSCo SERP or the SPS SERP
         shall no longer apply except as expressly provided in this Plan. ,

     (b) If an individual who was a participant in the PSCo SERP or the SPS SERP
         is not a  Participant  in this Plan on or after  January 1,  1998,  the
         benefit shall be determined  and paid pursuant to the provisions of the
         PSCo SERP or the SPS SERP,  whichever was  applicable,  as in effect on
         December 31, 1997.

        Sec. 1.3  Effective Date. The "Effective Date" of the Plan is January
1, 1998.

        Sec. 1.4  Company. For purposes of this Plan, "Company" means New
Century Energies, Inc., a Delaware corporation, and any Successor Employer
thereof.

        Sec.  1.5  Participating  Employers.  The  Company  is a  "Participating
Employer"  in  the  Plan.   Any   subsidiary  of  the  Company  shall  become  a
Participating Employer in this Plan upon being so designated in a written action
by the  Committee,  effective  as of the date  specified by the  Committee.  Any
Successor  Employer to a  Participating  Employer shall also be a  Participating
Employer.  A  Participating  Employer shall cease to be such effective as of the
date  specified in a written action by the Committee;  provided,  however,  that
such action shall not cause  Participants  employed by such  employer to forfeit
vested benefits accrued prior to such date.

        Sec. 1.6  Construction and Applicable Law. The Plan is intended to be an
unfunded  plan  maintained  primarily  for the  purpose  of  providing  deferred
compensation for a select group of management or highly  compensated  employees,
within the meaning of Sections  201(2),  301(a)(3) and 401(a)(1) of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA").  The Plan shall be
administered and construed  consistent with said intent. This Plan also shall be
governed and construed in  accordance  with the laws of the State of Colorado as
applied to contracts  executed and to be wholly  performed  within said state to
the extent that such laws are not  preempted by the laws of the United States of
America.



<PAGE>


                                   ARTICLE II

                                   DEFINITIONS

        Sec. 2.1 Accrual  Percentage. "Accrual  Percentage" means the percentage
(not in excess of 100%) of a Participant's  Normal Retirement  Benefit which has
accrued  under this Plan as of any date.  The Normal  Retirement  Benefit  shall
accrue monthly over a period of 20 years commencing from the Participant's  date
of employment with the Participating  Employers with a portion equal to 1/240 of
the total benefit  accruing at the end of each month during such 20-year period,
provided the individual is employed by a Participating  Employer on the last day
of said month. If an individual  became a Participant on the Effective Date, the
Participant's  Accrual  Percentage as of the Effective  Date shall be based on a
period of employment  that includes all service which was  recognized on the day
before the Effective Date for purposes of determining the Participant's  benefit
under the PSCo SERP or the SPS SERP. The Committee may, in its sole  discretion,
specify in the notice of  participation  that a particular  Participant  will be
treated as having  additional  employment with the  Participating  Employers for
purposes of calculating the Participant's Accrual Percentage under this Section.

        Sec. 2.2 Actuarial Equivalent."Actuarial  Equivalent" means a benefit of
equivalent  value determined by the Committee upon advice of the actuary for the
Retirement Plan using the actuarial factors used for the  corresponding  type of
calculation under the Retirement Plan.

        Sec. 2.3  Beneficiary. "Beneficiary" means the person or persons
designated as such pursuant to the provisions of Sec. 8. 1.

        Sec. 2.4  Board. "Board" means the Board of Directors of the Company.

        Sec. 2.5  Change In Control. A "Change In Control" is the occurrence
of any of the events described in subsections (a) through (d) below:

     (a) Either (i) receipt by the  Company of a report on  Schedule  13D, or an
         amendment  to such a report,  filed with the  Securities  and  Exchange
         Commission  pursuant to Section 13(d) of the Securities Exchange Act of
         1934 (die "1934 Act")  disclosing that any person (as such term is used
         in Section 13(d) of the 1934 Act) ("Person"),  is the beneficial owner,
         directly  or  indirectly,  of twenty  percent  or more of the  combined
         voting power of the  outstanding  stock of the Company,  or (ii) actual
         knowledge  by the Board of facts on the  basis of which  any  Person is
         required to file such a report on Schedule 13D, or to make an amendment
         to such a  report,  with the SEC (or would be  required  to file such a
         report or  amendment  upon the lapse of the  applicable  period of time
         specified in Section 13(d) of the 1934 Act) disclosing that such Person
         is the beneficial owner,  directly or indirectly,  of twenty percent or
         more of the  combined  voting  power  of the  outstanding  stock of the
         Company.

     (b) Purchase  by any  Person,  other  than the  Company  or a  wholly-owned
         subsidiary of the Company,  of shares  pursuant to a tender or exchange
         offer to acquire any stock of the Company  (or  securities  convertible
         into stock) for cash,  securities or any other  consideration  provided
         that,  after  consummation of the offer,  such Person is the beneficial
         owner (as  defined  in Rule  l3d-3  under the 1934  Act),  directly  or
         indirectly,  of twenty percent or more of the combined  voting power of
         the outstanding stock of the Company

                                       -2-



<PAGE>


         (calculated  as provided in paragraph  (d) of Rule l3d-3 under the 1934
          Act in the case of rights to acquire stock).

     (c) Approval by the shareholders of the Company of a transaction  described
         in any of the following paragraphs:

         (1)  Any consolidation or merger of the Company in which the Company is
              not the  continuing or surviving  corporation or pursuant to which
              shares  of stock of the  Company  would be  converted  into  cash,
              securities or other property, other than a consolidation or merger
              of the Company in which holders of its stock  immediately prior to
              the  consolidation  or  merger  own at  least  a  majority  of the
              combined  voting power of the  outstanding  stock of the surviving
              corporation  immediately  after the consolidation or merger (or at
              least a majority of the combined  voting power of the  outstanding
              stock of a corporation  which owns  directly or indirectly  all of
              the voting stock of the surviving corporation).

         (2)  Any consolidation or merger in which the Company is the continuing
              or  surviving  corporation  but in which the  shareholders  of the
              Company  immediately  prior to the  consolidation or merger do not
              hold at  least a  majority  of the  combined  voting  power of the
              outstanding  stock  of the  continuing  or  surviving  corporation
              (except  where such  holders of stock hold at least a majority  of
              the  combined  voting  power  of  the  outstanding  stock  of  the
              corporation  which owns directly or  indirectly  all of the voting
              stock of the Company).

         (3)  Any sale, lease, exchange or other transfer (in one transaction or
              a series of related  transactions) of all or substantially all the
              assets of the Company  (except  such a transfer  to a  corporation
              which is wholly owned, directly or indirectly, by the Company), or
              any complete liquidation of the Company.

         (4)  Any merger or consolidation of the Company where, after the merger
              or  consolidation,  one Person owns 100% of the shares of stock of
              the  Company  (except  where the holders of the  Company's  voting
              stock  immediately  prior to such merger or  consolidation  own at
              least a majority of the combined  voting power of the  outstanding
              stock  of  such   Person   immediately   after   such   merger  or
              consolidation).

     (d) A change in the  majority of the members of the Board within a 24-month
         period unless the election or nomination for election by the  Company's
         shareholders of each new director was approved by the vote of at  least
         two-thirds of the directors then still in office who were in office at
         the beginning of the 24-month period.

A Change In Control  occurs on the date that an event  described  in  subsection
(a), (b) or (d) occurs. In the case of a transaction described in subsection (c)
which is subject to approval by the  shareholders,  the Change In Control occurs
on the date the transaction is completed.

     Sec. 2.6 Committee.  "Committee"  means the  Compensation  Committee of the
Board or such other committee as may be appointed by the Board to administer the
Plan. However, no member of the Committee who is also a Participant in this Plan
may participate in or vote on any matter involving the Plan.

                                       -3-



<PAGE>


        Sec. 2.7 Final Average Compensation.  "Final Average Compensation" means
the average of the highest three  calendar  years of  Compensation  to which the
Participant  is  entitled  from  the  Participating  Employers  during  the five
calendar  year  period  immediately  preceding  the  calendar  year in which the
Participant's retirement or other separation from service occurs (or the average
of the years during such period in which the Participant received  Compensation,
if the Participant  received  Compensation in fewer than three such years).  For
purposes  of this  Section,  the  Participant's  Compensation  for a year is the
Participant's  base pay from the Participating  Employers as of December 31st of
that  year,  plus any bonus  earned by the  Participant  for that year under the
Company's Annual Incentive Plan (before any reductions for pre-tax contributions
under any Company  401(k)  savings  plan,  deferred  compensation  plan or other
benefit plan, and before withholding of taxes).

     Sec. 2.8 Normal Retirement  Benefit.  "Normal Retirement Benefit" means the
benefit calculated under Sec. 4. 1.

     Sec. 2.9 Normal Retirement Date.  "Normal  Retirement Date" means the first
day of the calendar month  coincident  with or next following the  Participant's
attainment of age 62.

     Sec. 2.10 Participant. "Participant" means an individual defined as such in
Sec. 3. 1.

     Sec.  2.11 Plan Year.  "Plan  Year" means the  12-consecutive-month  period
commencing January I and ending December 31.

     Sec.  2.12 PSCo  SERP.  "PSCo  SERP"  means the Public  Service  Company of
Colorado  Supplemental  Executive Retirement Plan for Key Employees as in effect
on August 1, 1997.

     Sec. 2.13 Retirement Plan. "Retirement Plan" means the New Century Energies
Retirement Plan, as it may be amended from time to time.

     Sec.  2.14 SPS SERP.  "SPS  SERP"  means the  Southwestern  Public  Service
Company Supplemental Retirement Income Plan as in effect on August 1, 1997.

     Sec. 2.15 Successor  Employer.  "Successor  Employer" means any entity that
succeeds  to the  business  of the  Company  or another  Participating  Employer
through merger,  consolidation,  acquisition of all or substantially  all of its
assets, or any other means.

        Sec. 2.16 Year of Vesting  Service.  "Year of Vesting  Service"  means a
Plan  Year in which an  individual  is a  Participant  in this Plan for all or a
portion  of  the  Plan  Year,  measured  in  years  and  completed  months  as a
Participant  (with each completed  month expressed as one-twelfth of a year). In
calculating Years of Vesting Service, an individual who becomes a Participant as
of the  Effective  Date  shall  receive  retroactive  credit  for all  years  of
participation credited to the Participant for purposes of vesting under the PSCo
SERP or the SPS SERP prior to the Effective Date.


                                       -4-
<PAGE>


                                 ARTICLE III

                                PARTICIPATION

        Sec. 3.1 Eligibility for  Participation.  A select  management or highly
compensated  employee of the  Company or another  Participating  Employer  shall
become a Participant in the Plan upon being  designated as such by the Committee
in a written  notice issued by the Committee to the  Participant  at the time of
the designation, effective as of the date specified in the notice and subject to
any additional conditions or limitations specified in the notice.

        Sec. 3.2  Cessation of  Participation.  An employee  shall cease to be a
Participant  on the pa  earliest  of (i)  the  date  he or she  ceases  to be an
employee  of the  Participating  Employers,  (ii) the date he or she  receives a
written  notice from the Committee  revoking his or her status as a Participant,
or (iii) the date he or she fails to meet the  requirements  of any  regulations
which may be issued by the U.S.  Department  of Labor  that  define  the  phrase
"select  group of  management  or highly  compensated  employees"  under  ERISA.
Service or earnings  after the date the  individual  ceases to be a  Participant
shall be disregarded for purposes of this Plan, but the individual  shall remain
entitled to any benefits  under this Plan which have become vested prior to that
date.

     Sec.  3.3 No Guarantee of  Employment.  Participation  in the Plan does not
constitute  a  guarantee  or  contract  of  employment  with  the  Participating
Employers.  Such  participation  shall in no way  interfere  with any rights the
Participating  Employers  would  have in the  absence of such  participation  to
determine  the  duration of the  employee's  employment  with the  Participating
Employers.

                                  ARTICLE IV

                                   BENEFITS

     Sec. 4.1 Amount of Normal Retirement Benefit.  Subject to the provisions of
Sections 4.2 and 4.3 below, the Normal  Retirement  Benefit under this Plan of a
Participant  who is vested under Sec. 4.3 shall be a monthly amount equal to the
excess,  if any,  of the amount  determined  in  subsection  (a) over the amount
determined in subsection (b):

     (a) One-twelfth  of 55 % of the  Participant's  Final Average  Compensation
         multiplied by the Participant's Accrual Percentage.

     (b) The  monthly  pension to which the  Participant  is entitled to receive
         under the Retirement Plan in the form of a life-only annuity commencing
         on  the  first  day  of the  month  following  the  later  of  (i)  the
         Participant's  normal retirement age under the Retirement Plan, or (ii)
         the date the Participant's  retirement or other separation from service
         with  the  Participating   Employers  occurs.   This  amount  shall  be
         determined  without  regard  to  the  actual  benefit  paid  under  the
         Retirement  Plan or the  actual  time or form of such  benefit.  If the
         Participant  has elected under the Retirement  Plan to have all or part
         of the Participant's  "Retirement  Program Credits"  contributed to the
         New Century Energies,  Inc. Employees' Savings and Stock Ownership Plan
         for Non-Bargaining  Unit Employees,  or any successor to such plan, the
         monthly pension determined under this subsection (b) shall be increased
         to reflect the amount

                                       -5-



<PAGE>


         to which the Participant  would have been entitled under the Retirement
         Plan if such credits had instead been allocated to the Retirement Plan.

     Sec.  4.2  Special  Provisions  for PSCo and SPS  SERP  Participation.  For
Participants who participated in the PSCo SERP or the SPS SERP on the day before
the Effective  Date, the Normal  Retirement  Benefit under Sec. 4.1 shall not be
less than the Actuarial  Equivalent  (expressed in the Normal Form payable under
Sec. 5. 1) of whichever of the following benefits is applicable:

     (a) If the Participant retires or otherwise separates from service with the
         Participating  Employers  prior to May 1,  2000,  the  accrued  benefit
         determined  as of the date of  separation  from service  under the PSCo
         SERP  or  the  SPS  SERP  (whichever  covered  the  Participant  on the
         Effective Date).

     (b) If the Participant retires or otherwise separates from service with the
         Participating  Employers on or after May 1, 2000,  the accrued  benefit
         determined  under the PSCo SERP or the SPS SERP (whichever  covered the
         Participant  on the  Effective  Date),  determined by assuming that the
         Participant separated from service on May 1, 2000. However, whether the
         Participant  is vested in such benefit shall be determined  pursuant to
         Sec.  4.3  of  this  Plan  as of  the  date  the  Participant's  actual
         separation from service occurs.

     Sec. 4.3 Vesting of Benefit.  A  Participant's  Normal  Retirement  Benefit
shall become vested upon the earlier of

     (a) The Participant's completion of five Years of Vesting Service.

     (b) The Participant's attainment of age 60.

Notwithstanding  the  foregoing,  the  Participant  shall  not be  vested in any
benefit  under  this  Plan and the  entire  benefit  shall be  forfeited  if the
Participant's  employment  is terminated  by his or her  Participating  Employer
because of the  Participant's  fraud or dishonesty  which has resulted in, or is
likely to result in, material  economic damage to a Participating  Employer,  as
determined in good faith by the Committee.  The  determination  of the Committee
with respect to the  Participant's  conduct shall be conclusive,  whether or not
there are  related  judicial  or other  proceedings  and  without  regard to the
outcome of any such  proceeding.  A  Participant  who is not  vested  under this
Section  on the date his or her  retirement  or other  separation  from  service
occurs shall not be eligible to receive any benefit under this Plan.



                                       -6-

<PAGE>


                                  ARTICLE V

                    FORM OF PAYMENT AND COMMENCEMENT DATE

     Sec. 5.1 Normal Form. In the event of the Participant's retirement or other
separation from service (except for death or disability) with the  Participating
Employers on or after  attaining  age 62,  payment of the  Participant's  vested
Normal  Retirement  Benefit  shall  commence  on the  first  day  of  the  month
coinciding  with or next  following  the date on which such  retirement or other
separation  from service  occurs and continue  each month  thereafter  until 240
monthly payments have been made.

        Sec. 5.2 Reduction for Early Retirement.  In the event the Participant's
retirement or other  separation  from service  (except for death or  disability)
from the  Participating  Employers  occurs prior to his or her attainment of age
62, the Normal  Retirement  Benefit will be paid  commencing on the first day of
the month following the, later of (i) the date the  Participant  attains age 55,
or  (ii)  the  date  the  separation  from  service  occurred,  unless  a  later
commencement  date is  elected  pursuant  to Sec.  5.3,  but shall in all events
commence by the first day of the month  coinciding  with or next  following  the
date the  Participant  attains age 62. The payments  shall  continue  each month
thereafter  until a total of 240 monthly  payments have been made. The amount of
the Participant's Normal Retirement Benefit shall be reduced by five-twelfths of
one percent for each month by which the commencement date precedes the first day
of the month  coinciding  with or next following the date the  Participant  will
attain age 62.

     Sec. 5.3 Optional  Forms.  Upon written  application  by a Participant  not
later than 12 months before the date payments are to commence under Sec. 5. 1 or
5.2, or with Committee  consent (which shall be granted in its sole  discretion)
for  periods of less than 12 months  before  said date,  the  benefit to which a
Participant  is entitled  under Sec.  5.1 or Sec.  5.2 shall be  payable,  on an
Actuarial  Equivalent  basis, in the form of a single lump sum or in the form of
any annuity option permitted under the Retirement Plan.

        Sec.  5.4  Commencement  Date. Retirement  benefits  shall  commence  in
accordance  with Sec. 5.1 and Sec. 5.2;  provided,  however,  that the Committee
may, in its discretion,  after receiving a Participant's lump sum election under
Sec.  5.3,  determine  that  payment  shall be made at a later  date  than  that
specified or requested by the Participant. In the event that all or a portion of
any  payment  under  this  Article  V shall  be  rendered  nondeductible  by the
Participating  Employers pursuant to Internal Revenue Code Section 162(m) or any
successor provision at the time of the Participant's  retirement or termination,
the Committee shall defer any such  nondeductible  portion to a time period when
such payment would otherwise be deductible by the Participating  Employers,  and
shall adjust the deferred  payment on an Actuarial  Equivalent  basis to reflect
the date payment is actually made.

        Sec.  5.5  Disability  Before  Retirement.   If,  while  employed  by  a
Participating  Employer, a Participant becomes totally and permanently disabled,
as  determined by the  Committee,  and is separated  from  service,  the monthly
vested Normal Retirement  Benefit shall be paid to the Participant  beginning on
the first day of the month  following the date of the  Participant's  separation
from service,  without any reduction for early commencement of the payments, and
shall  continue  until a total of 240  monthly  payments  have  been  made.  For
purposes of this Section, "disabled" means, for a period of up to 24 consecutive
months,  a  Participant's  inability  as a result of an  accident  or illness to
perform the essential  functions of the  Participant's  current  position or any
position the Participant held within the 90 day period immediately prior to such
accident or illness, and at the end of said 24 month period, the Participant is



                                       -7-

<PAGE>


permanently  unable  to  engage  in any and every  occupation  or  business  for
compensation  or profit  for  which  the  Participant  is  reasonably  fitted by
education, training or experience.

        Sec.  5.6  Death  Prior  to  Termination  of  Employment.  If  a  vested
Participant  dies  while  employed  by a  Participating  Employer  (and prior to
commencement of a pension due to disability  under Sec. 5.5), the  Participant's
Beneficiary  shall receive,  beginning the first day of the month  following the
Participant's  death, a monthly payment equal to 50% of the Participant's Normal
Retirement  Benefit until a total of 240 monthly  payments have been made to the
Beneficiary.

     Sec. 5.7 Death After  Termination  of Employment.  If a vested  Participant
dies  after  leaving  the  employ of the  Participating  Employers  and prior to
Participant's  receipt of 240 benefit payments,  the  Participant's  Beneficiary
shall receive payments determined as follows:

     (a) The  monthly  payment  will be an  amount  which  is  equal  to 50 % of
         Participant's  monthly vested Normal  Retirement  Benefit from the Plan
         which  the   Participant  was  receiving   immediately   preceding  the
         Participant's  death,  (or would have been  entitled  to  receive  upon
         attaining age 62 if the Participant died prior to commencing to receive
         payments).

     (b) The  monthly  benefit  determined  under  subsection  (a) shall be paid
         beginning  the first  day of the  month  after the date of death if the
         Participant was receiving  payments prior to death, and otherwise shall
         commence  on  the  first  day of  the  month  following  the  date  the
         Participant  would have attained age 62.  Payments shall cease when the
         Participant and the Participant's  Beneficiary have received a total of
         240 monthly benefit payments collectively.

     (c) The  Committee  may in its sole  discretion  pay any benefit under this
Section in a lump sum in accordance  with Sec. 5.3 or may pay a reduced  benefit
determined  pursuant  to Sec.  5.2  commencing  at any  time  determined  by the
Committee after the later of the Participant's death or the date the Participant
would have attained age 55.

        Sec. 5.8 Benefit Upon Change In Control.  If a Participant's  retirement
or other separation from service with the Participating  Employers occurs within
24 months after a Change In Control,  notwithstanding any provision of this Plan
to the contrary, the Participant's entire benefit hereunder shall be paid within
30 days following the separation  from service in a single lump stun that is the
Actuarial  Equivalent  of the  benefit to which the  Participant  was  otherwise
entitled.

                                  ARTICLE VI

                                ADMINISTRATION

        Sec. 6.1 Administration by the Committee. The Committee shall administer
the Plan, establish,  adopt, or revise such rules and regulations as it may deem
necessary or advisable for the on of the Plan and  interpret  the  provisions of
the Plan.  The  Committee  shall have  discretionary  authority to interpret the
Plan, and the interpretations of the Committee shall be conclusive.

        Sec. 6.2  Withholding  of Taxes.  The benefits  payable  under this Plan
shall be subject to the deduction of any federal,  state,  or local income taxes
or other  taxes  which  are  required  to be  withheld  from  such  payments  by
applicable laws and regulations.



                                       -8-
<PAGE>


        Sec.  6.3  Unfunded  and  Unsecured  Plan.  The Plan is an unfunded  and
unsecured  nonqualified  plan for federal  income tax,  ERISA and  Department of
Labor purposes.  It is a condition of the Plan, and each  Participant  expressly
agrees, that the Participant and the Participant's Beneficiary shall look solely
to the Participating  Employers for payment of benefits under the Plan,  whether
such payments are made from the general funds of the Participating  Employers or
otherwise.  No Participant or Beneficiary shall have any interest  whatsoever in
any  specific  asset of the  Participating  Employers.  To the  extent  that any
Participant or Beneficiary acquires a right to receive payments under this Plan,
such right shall be no greater than the right of any unsecured  general creditor
of the Participating Employers.

                                 ARTICLE VII

                          AMENDMENT AND TERMINATION 

        Sec. 7.1 Amendment. The Board may amend the Plan at any time in whole or
in part for any reason.  No amendment  shall  decrease  the  benefits  that have
accrued under the Plan prior to the date of such amendment based on earnings and
service prior to such date,  but the amendment may decrease or eliminate  future
accruals  (including  any  continuing  accruals under the provisions of the PSCo
SERP or the SPS SERP).

        Sec. 7.2  Termination  of Plan.  The Board may terminate the Plan at any
time. After such termination, no employee shall become a Participant, no further
benefits  shall accrue under the Plan,  and each  Participant  shall become 100%
vested  in  the  benefit  accrued  prior  to the  date  of  termination.  At the
discretion of the  Committee,  the benefits  accrued prior to termination of the
Plan may be either distributed to Participants (or Beneficiaries in the event of
death) in a lump sum on an Actuarial Equivalent basis as of a date determined by
the  Committee  which  is after  the  date of  termination,  or  distributed  in
accordance with Article V.

                                 ARTICLE VIII

                                MISCELLANEOUS

     Sec. 8.1 Designation of Beneficiary.  Each  Participant  under the Plan may
name  any  Beneficiary  or  Beneficiaries  (who  may be  named  contingently  or
successively)  to  whom  any  benefit  under  the  Plan  otherwise  due  to  the
Participant may be paid in case of the Participant's  death before receiving any
or all of such  benefit.  Any  subsequent  designation  shall  revoke  all prior
designations by the same  Participant.  If the Participant  does not designate a
beneficiary,  or if none of those  designated  are alive or existing at the time
the  Beneficiary  is to be identified to receive a benefit under the Plan, or if
the  person  receiving  benefits  as the  beneficiary  hereunder  dies  with  no
contingent  beneficiary  designated,  the Beneficiary shall be the Participant's
estate.

     Sec. 8.2 Benefits May Not Be Assigned or  Alienated.  Neither a Participant
nor any Beneficiary shall have the right to sell, assign, transfer,  encumber or
otherwise  convey any right to receive  any  payment  hereunder.  No part of the
amounts payable  hereunder shall be subject to seizure or sequestration  for the
payment of any debts or judgments owed by a Participant or any other person.



                                       -9-
<PAGE>


        Sec. 8.3  Headings. Headings at the beginning of articles and sections 
hereof are for convenience of reference, shall not be considered a part of the 
text of the Plan, and shall not influence its construction.

        Sec. 8.4  Capitalized Definitions. Capitalized terms used in the Plan
shall have their meaning as defined in the Plan unless the context clearly
indicates to the contrary.

        Sec. 8.5  Gender. Any references to the masculine gender include the
feminine and vice versa.

        Sec. 8.6  Use of Compounds of Word "Here". Use of the words "hereof",
"herein", "hereunder", or similar compounds of the word "here" shall mean and
refer to the entire Plan unless the context clearly indicates to the contrary.

        Sec. 8.7  Construed as a Whole. The provisions of the Plan shall be
construed as a whole in such manner as to carry out the provisions hereof and
shall not be construed separately without relation to the context.

        IN WITNESS  WHEREOF,  the Company has caused this Plan to be executed by
its duly authorized officer this 3rd day of August, 1998.

                                                NEW CENTURY ENERGIES, INC.

                                                  /s/ Bill D. Helton
                                                  ------------------
                                                By  Bill D. Helton
                                                Its Chief Executive Officer



                                      -10-



                                                                 Exhibit 10(f)1







                              NEW CENTURY ENERGIES

                  SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                             FOR EXECUTIVE OFFICERS

                       (As Adopted Effective July 1, 1998)





<PAGE>


                              NEW CENTURY ENERGIES
                  SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                             FOR EXECUTIVE OFFICERS

                                TABLE OF CONTENTS

ARTICLE I GENERAL

   Sec. 1. 1 Name of Plan ..............................................   1
   Sec. 1.2 Purpose.....................................................   1
   Sec. 1.3 Effective Date..............................................   1
   Sec. 1.4 Company.....................................................   1
   Sec. 1.5 Participating Employers ....................................   1
   Sec. 1.6 Construction and Applicable Law ............................   1

ARTICLE II DEFINITIONS

   Sec. 2.1 Accounts ...................................................   1
   Sec. 2.2 Base Salary.................................................   2
   Sec. 2.3 Beneficiary.................................................   2
   Sec. 2.4 Board.......................................................   2
   Sec. 2.5 Code........................................................   3
   Sec. 2.6 Committee...................................................   3
   Sec. 2.7 Common Shares...............................................   3
   Sec. 2.8 Company Credits.............................................   3
   Sec. 2.9 Compensation................................................   3
   Sec. 2.10 Disability.................................................   3
   Sec. 2.11 ERISA......................................................   3
   Sec. 2.12 Investment Credits.........................................   3
   Sec. 2.13 Participant................................................   3
   Sec. 2.14 Plan Year..................................................   3
   Sec. 2. 15 Prior PSCo Plan...........................................   3
   Sec. 2.16 Prior SPS Plan.............................................   3
   Sec. 2.17 Retirement.................................................   4
   Sec. 2.18 Savings Plan...............................................   4
   Sec. 2.19 Successor Employer.........................................   4
   Sec. 2.20 Valuation Date.............................................   4

ARTICLE III PARTICIPATION

   Sec. 3.1 Eligibility for Participation ..............................   4
   Sec. 3.2 Duration of Participation ..................................   4
   Sec. 3.3 No Guarantee of Employment .................................   5

ARTICLE IV DEFERRED COMPENSATION AND CREDITS TO ACCOUNTS

   Sec. 4.1 Election to Defer Compensation..............................   5
   Sec. 4.2 Company Credits ............................................   7



                                       i
<PAGE>



   Sec. 4.3 Investment Credits and Valuation of Accounts ...............    7
   Sec. 4.4 Dividends on Common Shares .................................    8
   Sec. 4.5 Adjustment of Stock Accounts for Splits, Dividends, Etc ....    8

ARTICLE V DISTRIBUTION OF ACCOUNTS

   Sec. 5.1 Time for Distribution ......................................    9
   Sec. 5.2 Manner of Payment ..........................................    9
   Sec. 5.3 Amount of Payment ..........................................    9
   Sec. 5.4 Beneficiary Designation ....................................    9
   Sec. 5.5 Distributions for Severe Financial Hardship ................    9
   Sec. 5.6 Modification of Elections for Tax Considerations ...........   10
   Sec. 5.7 Withholding and Taxes ......................................   10

ARTICLE VI ADMINISTRATION

   Sec. 6.1 Administration by the Committee ............................   11
   Sec. 6.2 Claims Procedure ...........................................   11

ARTICLE VII AMENDMENT AND TERMINATION

   Sec. 7.1 Amendment ..................................................   11
   Sec. 7.2 Termination of Plan ........................................   11

ARTICLE VIII MISCELLANEOUS

   Sec. 8.1 Unsecured Obligations ......................................   12
   Sec. 8.2 Benefits May Not Be Assigned or Alienated ..................   12
   Sec. 8.3 Incompetency................................................   12
   Sec. 8.4 Notices.....................................................   12
   Sec. 8.5 Severability................................................   12
   Sec. 8.6 Headings....................................................   12
   Sec. 8.7 Capitalized Definitions ....................................   12
   Sec. 8.8 Gender .....................................................   12
   Sec. 8.9 Use of Compounds of Word "Here .............................   13
   Sec. 8. 10 Construed as a Whole .....................................   13



                                       ii
<PAGE>


                              NEW CENTURY ENERGIES
                  SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                             FOR EXECUTIVE OFFICERS

                                    ARTICLE I

                                     GENERAL

     Sec. 1.1 Name of Plan.  The name of this plan is the "New Century  Energies
Salary Deferral and Supplemental  Savings Plan for Executive Officers" (referred
to hereinafter as the "Plan").

      Sec.  1.2  Purpose  The Plan has been  established  to provide  additional
future income to certain select executive  officers through voluntary  deferrals
of Compensation and Company Credits related to matching  contributions under the
Savings Plan.  Those portions of the Prior PSCo Plan and the Prior SPS Plan that
covered  individuals  who are  Participants in this Plan as of July 1, 1998 were
merged into this Plan as of that date,  and the  benefits  of such  Participants
under the  applicable  Prior Plan shall  thereafter be provided  pursuant to the
provisions of this Plan.

     Sec. 1.3 Effective  Date. The "Effective  Date" of the Plan, the date as of
which the Plan was established, is July 1, 1998.

     Sec. 1.4 Company.  For purposes of this Plan,  "Company"  means New Century
Energies, Inc., a Delaware corporation, and any Successor Employer thereof.

      Sec.  1.5  Participating   Employers.  The  Company  is  a  "Participating
Employer"  in  the  Plan.   Any   subsidiary  of  the  Company  shall  become  a
Participating Employer in this Plan upon being so designated in a written action
by the  Committee,  effective  as of the date  specified by the  Committee.  Any
Successor  Employer to a  Participating  Employer shall also be a  Participating
Employer.  A  Participating  Employer shall cease to be such effective as of the
date  specified in a written action by the Committee;  provided,  however,  that
such action shall not cause  Participants  employed by such  employer to forfeit
benefits accrued prior to such date.

      Sec. 1.6  Construction  and Applicable  Law. The Plan is intended to be an
unfunded  plan  maintained  primarily  for the  purpose  of  providing  deferred
compensation for a select group of management or highly  compensated  employees,
within the meaning of Sections  201(2),  301(a)(3) and  401(a)(1) of ERISA.  The
Plan is not intended to qualify  under Code Section  401(a) or 403(a).  The Plan
shall be administered and construed  consistent with said intent. This Plan also
shall be governed  and  construed  in  accordance  with the laws of the State of
Colorado as applied to contracts executed and to be wholly performed within said
state to the extent that such laws are not  preempted  by the laws of the United
States of America.

                                   ARTICLE II

                                   DEFINITIONS

     Sec.  2.1  Accounts.  "Accounts"  shall be  established  for each  eligible
Participant  reflecting the amounts owed to the Participant or the Participant's
Beneficiary  under  the  terms  of this  Plan.  The  following  Accounts  may be
established for each Participant:



<PAGE>


     (a)  Cash Account.  A Cash Account shall be  established  to which shall be
          credited the amounts of Compensation deferred by the Participant under
          Sec.  4.1 (other  than  amounts  the  Participant  has elected to have
          deposited in his or her  Directable  Stock Account) and the Investment
          Credits under Sec. 4.3 related to those deferrals.  The  Committee may
          maintain  sub-accounts  for a  Participant  within the Cash Account to
          reflect the investment options for that Account under Sec. 4.3.

      (b)  Stock  Accounts.  The  following  types  of Stock  Accounts  shall be
           established for a Participant:

           (1) Directable  Stock Account.  The  Participant's  Directable  Stock
               Account  shall be  credited  with  all  amounts  of  Compensation
               deferred  by the  Participant  under  Sec.  4.1  and  accumulated
               Investment  Credits on those  deferrals which the Participant has
               elected to be deemed to have been invested in Common Shares.

           (2) Nondirectable  Stock  Account.  The  Participant's  Nondirectable
               Stock  Account  shall  be  credited  with  any  Company   Credits
               determined  under Sec.  4.2, and  adjustments  under Sec. 4.4 and
               Sec. 4.5 related to those credits.

      (c)  Prior  Plan  Accounts.  The  Accounts  of  an  individual  who  is  a
           Participant in this Plan on July 1, 1998 and who was a participant in
           the Prior PSCo Plan or the Prior SPS Plan on June 30, 1998,  shall be
           initially credited as of July 1, 1998 as follows:

           (1) The Participant's Cash Account shall be credited with the balance
               credited to his or her cash  account in the Prior PSCo Plan as of
               June 30, 1998 and the Participant's  Nondirectable  Stock Account
               shall be credited with the number of Common  Shares.  credited to
               his or her stock account under the Prior PSCo Plan as of June 30,
               1998.

           (2) The  Participant's  Nondirectable  Stock Account will be credited
               with  a  number  of  Common  Shares  equal  to the  value  of the
               Participant's  matching  account under the Prior SPS Plan on June
               30, 1998, and the Participant's  Directable Stock Account will be
               credited with a number of Common Shares equal to the value of the
               Participant's  other  accounts  under  the Prior SPS Plan on that
               date,  in each case  divided  by the  average of the high and low
               sale prices of a Common  Share on the New York Stock  Exchange on
               June 30, 1998.  This  paragraph  will be applied by assuming that
               June 30, 1998 is a "valuation date" under the Prior SPS Plan.

Each  Participant  is always  100%  vested  in  amounts  credited  to his or her
Accounts.

     Sec. 2.2 Base Salary.  "Base  Salary" means a  Participant's  annual salary
rate in effect from time to time during each Plan Year, unreduced for any salary
deferrals under any Company savings, incentive or other employee benefit plan.

     Sec. 2.3 Beneficiary.  "Beneficiary" means the person or persons designated
as such pursuant to the provisions of Sec. 5.4.

      See. 2.4 Board. "Board" means the board of directors of the Company.

                                       -2-


<PAGE>


     Sec. 2.5 Code.  "Code" means the Internal  Revenue Code of 1986, as amended
from time to time, and any successor statute.

     Sec. 2.6 Committee.  "Committee"  means the  Compensation  Committee of the
Board or any other  committee  appointed  by the Board to  administer  the Plan.
However,  no member of the Committee who is also a Participant  in this Plan may
participate in or vote or any matter involving the Plan.

     Sec. 2.7 Common  Shares.  "Common  Shares"  means  shares of the  Company's
common stock.

     Sec. 2.8 Company Credits.  "Company  Credits" are the credits  allocable to
the Participant's Nondirectable Stock Account pursuant to Sec. 4.2.

      Sec.  2.9   Compensation   "Compensation"   for  a  Plan  Year  means  the
compensation  to which  the  Participant  is  entitled  from  the  Participating
Employers  with  respect to the Plan Year,  including  any Base  Salary  payable
during the Plan Year,  any annual  incentive  bonus earned  under the  Company's
annual  incentive plan for the Plan Year and payable in the following Plan Year,
and any cash or Company stock incentive bonus earned for the Plan Year under any
other plan that may be established by the Company,  if so permitted by the terms
of such plan (regardless of when paid).

      See.  2.10  Disability.  "Disability"  means,  for  a  period  of up to 24
consecutive  months,  a  Participant's  inability  as a result of an accident or
illness to perform the essential functions of the Participant's current position
or any position the Participant held within the 90 day period  immediately prior
to such  accident  or  illness,  and at the end of said  24  month  period,  the
Participant  is  permanently  unable to engage  in any and every  occupation  or
business for  compensation  or profit for which the  Participant  is  reasonably
fitted by education, training or experience.

     See. 2.11 ERISA.  "ERISA" means the Employee Retirement Income Security Act
of 1974, as amended from time to time, and any successor statute.

     Sec. 2.12 Investment Credits.  "Investment Credits" are the gains or losses
allocable  to the Cash  Accounts of a  Participant  under Sec.  4.3 based on the
investment indexes elected by the Participant, and adjustments for dividends and
other  transactions to the Participant's  Stock Accounts under Sec. 4.4 and Sec.
4.5.

     Sec. 2.13  Participant.  A "Participant"  means any executive  officer of a
Participating  Employer who has been  designated  in writing by the Committee as
eligible for this Plan.

     See.  2.14 Plan  Year.  A "Plan  Year" is the  12-consecutive-month  period
commencing on each January 1 and ending on the following  December 3 1. However,
the first Plan Year of the Plan begins on July 1, 1998 and ends on December  31,
1998.

     See.  2.15 Prior  PSCo Plan.  "Prior  PSCo Plan"  means the Public  Service
Company of Colorado Executive Savings Plan, as in effect on June 30, 1998.

     Sec. 2.16 Prior SPS Plan.  "Prior SPS Plan" means the  Southwestern  Public
Service  Company  Non-Qualified  Salary  Deferral Plan, as in effect on June 30,
1998.

                                       -3-


<PAGE>


      Sec. 2.17 Retirement. "Retirement" means termination of employment with a
Participating Employer after attaining age 62.

     See.  2.18  Savings  Plan.  "Savings  Plan" means the New Century  Energies
Savings Plan, as it may be amended from time to time.

     Sec. 2.19  Successor  Employer.  A "Successor  Employer" is any entity that
succeeds  to the  business  of the  Company  or another  Participating  Employer
through merger,  consolidation,  acquisition of all or substantially  all of its
assets,  or any other means and which elects before or within a reasonable  time
after such succession,  by appropriate action evidenced in writing,  to continue
the Plan.

     See. 2.20  Valuation  Date.  "Valuation  Date" means each date on which the
Accounts of Participants  are valued for purposes of this Plan.  Valuation Dates
shall  include the last day of each month and such other dates as the  Committee
determines are necessary or advisable for the administration of the Plan.

                                   ARTICLE III

                                  PARTICIPATION

     Sec. 3.1 Eligibility for Participation.  A Participant's  eligibility under
this Plan shall be subject to the following:

      (a)  The Participant will become eligible to elect to make deferrals under
           Sec. 4.1 and to receive  Company  Credits under Sec. 4.2 effective as
           of the date  specified  by the  Committee  in the  written  notice of
           participation.  However,  deferrals will not commence under Sec. 4. 1
           until  the  effective  date of an  election  filed  pursuant  to that
           section.

      (b)  An  employee  who is  designated  as a  Participant  before  the last
           calendar  quarter of a Plan Year may wait until the following year to
           make deferrals of Compensation or may elect to make deferrals for the
           partial Plan Year (for Compensation earned after the calendar quarter
           of the election to defer),  and in either case such Participant shall
           be eligible  for Company  Credits  under  Section 4.2 for the partial
           Plan Year, unless the Committee  determines otherwise at the time the
           employee is designated as a Participant.

     Sec. 3.2 Duration of  Participation.  An employee who becomes a Participant
shall  continue to be  eligible to make  elections  under Sec.  4.1  thereafter,
subject to the following:

      (a) The Participant's deferrals shall cease on the earliest of.

           (1) The  date  the  Participant   terminates   employment  with  the
               Participating Employers.

           (2) The date  specified in a written  notice  issued by the Committee
               revoking the individual's status as a Participant.

           (3) The date the  Participant  fails to meet the  requirements of any
               regulations  which may be issued by the  Department of Labor that
               define  the  phrase   "select   group  of  management  or  highly
               compensated employees" under ERISA.

                                       -4-


<PAGE>


      (b)  An individual  shall continue to be a Participant for purposes of the
           provisions of the Plan other than Sec. 4.1 or Sec. 4.2 until the date
           all of his or her Accounts have been distributed.

      (c)  If an employee who has elected to make deferrals  under Sec. 4. 1 for
           a particular Plan Year is subsequently  determined not to be eligible
           to be a  Participant  for that Plan  Year,  the  employee's  deferral
           election  for that year will be canceled  and any  amounts  which may
           have already been deferred for that year will be promptly refunded to
           the employee.

     Sec.  3.3 No Guarantee of  Employment.  Participation  in the Plan does not
constitute  a  guarantee  or  contract  of  employment  with  the  Participating
Employers.  Such  participation  shall in no way  interfere  with any rights the
Participating  Employers  would  have in the  absence of such  participation  to
determine the duration of the employee's employment.

                                   ARTICLE IV

                  DEFERRED COMPENSATION AND CREDITS TO ACCOUNTS

      See. 4.1 Election to Defer Compensation. An eligible Participant may elect
to have  Compensation with respect to each Plan Year credited to his or her Cash
Account and/or Directable Stock Account rather than being paid in cash,  subject
to any limitations that may be imposed by the Committee. Elections shall be made
on forms  specified by the  Committee  for  purposes of this Plan,  and shall be
filed in the manner specified by the Committee. The Compensation for a Plan Year
of a Participant who elects deferrals under this section shall be reduced by the
percentage or amount so elected, subject to the following:

      (a)  Elections for each Plan Year must be filed during the election period
           specified by the Committee for that Plan Year,  which period must end
           on or prior to  December  31 of the  previous  year,  subject  to the
           following:

           (1) If an individual (other than a former  Participant) is designated
               as a Participant  during a Plan Year,  any election for that Plan
               Year must be filed within 30 days after the date the  Participant
               received  the  notice  of  participation,   and  deferrals  shall
               commence as of the first day of the  calendar  quarter  after the
               election  is received by the  Committee.  Such an election  shall
               apply to Base  Salary  payable  during that Plan Year for payroll
               periods  beginning  on or after the first day of said quarter and
               to any incentive compensation for that Plan Year which is subject
               to a requirement  that the individual  remain  employed to a date
               that is on or after the first day of said quarter.

           (2) A former Participant who is again designated as a Participant may
               not commence deferrals until January 1 of the Plan Year following
               the  designation of  participation,  and an election to defer for
               such Plan Year must be made prior to said January 1.

           (3) Except as provided in paragraph (4),  elections for the Plan Year
               commencing July 1, 1998 must be filed by June 30, 1998.

           (4) Notwithstanding  anything  in  this  Plan to the  contrary,  if a
               Participant was a participant in the Prior PSCo Plan or the Prior
               SPS Plan on June 30, 1998, any

                                       -5-


<PAGE>


               election in effect under such Prior Plan shall continue in effect
               for  purposes  of this  Plan for the 1998 Plan  Year,  and no new
               election shall be allowed under this Plan for that Plan Year. Any
               such election under a Prior Plan shall not apply to  Compensation
               with respect to Plan Years commencing after 1998.

     (b)  The  Participant  may elect to defer either (i) any whole  percent (in
          10% increments) of Compensation payable with respect to the Plan Year,
          or (ii) any percent or dollar amount of  Compensation up to the amount
          required for the  Participant  to receive the maximum  Company  Credit
          under Sec. 4.2. However,  the total deferrals during any Plan Year may
          not reduce the  Participant's  Compensation  payable  during that Plan
          Year (after  deduction of the deferrals  under this Plan) to less than
          $100,000 (or the dollar amount in effect for that Plan Year under Code
          Section 414(q)(1)(B), if greater).

     (c)  The deferred  compensation  credited under this section on behalf of a
          Participant  shall be  allocated  to the  Participant's  Cash  Account
          and/or  Directable Stock Account (as elected by the Participant) as of
          the date that the  Compensation  would otherwise have been paid to the
          Participant  in cash. The amount of Common Shares to be allocated to a
          Directable Stock Account shall be determined by dividing the credit by
          the average of the high and low sales  prices of a Common Share on the
          New York Stock  Exchange on the business day  proceeding  the date the
          credit is made.

      (d)  The Participant must file a separate  deferral election for each Plan
           Year with respect to which  deferrals are to be made under this Plan.
           An election for a Plan Year shall become irrevocable on the first day
           of that year,  subject to subsection  (e).  Elections  will not carry
           over  into  subsequent  Plan  Years.   However,  an  election  for  a
           particular Plan Year shall apply to all Compensation  with respect to
           that Plan Year,  including  incentive bonuses or other amounts earned
           during that year but paid in subsequent Plan Years.

      (e) Notwithstanding the foregoing provisions of this section:

           (1) All deferrals by a Participant shall cease as of (i) the date the
               Participant  receives a hardship  withdrawal  under any qualified
               defined   contribution   plan  subject  to  Code  Section  401(k)
               maintained by the Company or any of its affiliates which requires
               that  deferrals  be  suspended  for  a  certain  period  of  time
               following  such  withdrawal,  or (ii) the  date  the  Participant
               receives  a  withdrawal  from  this  Plan  for  severe  financial
               hardship  due  to an  unforeseeable  emergency  under  Sec.  5.5.
               Deferrals  under this section may not recommence  until the first
               day of the second Plan Year  beginning  after the date  deferrals
               ceased  under the  previous  sentence,  and no further  deferrals
               shall be made from  Compensation with respect to Plan Years prior
               to said second Plan Year.

           (2) The Committee may in its sole  discretion  cancel a Participant's
               deferral election for the current Plan Year (and for Compensation
               not yet paid with  respect to any  previous  Plan Years) upon the
               request of a  Participant  if the  Committee  determines  that an
               event has occurred which would make the Participant  eligible for
               a   withdrawal   for  severe   financial   hardship   due  to  an
               unforeseeable  emergency  under Sec.  5.5.  Deferrals  under this
               section may not recommence until the first day of the second Plan
               Year beginning after the date deferrals ceased under the previous
               sentence,   and  no   further   deferrals   shall  be  made  from
               Compensation with respect to

                                       -6-


<PAGE>


               Plan Years prior to said second Plan Year.  The  Participant  may
               request that deferrals cease under this paragraph  whether or not
               the Participant requests a withdrawal under Sec. 5.5.

     Sec.  4.2  Company  Credits.  Subject to the  Committee's  discretion,  the
Nondirectable  Stock Account of each eligible  Participant  will be credited for
each Plan Year with a Company  Credit  representing  a number of Common  Shares,
determined as follows:

      (a)  The  Company  Credit  for a Plan  Year  will be equal  to the  amount
           determined  under  paragraph  (1) minus the amount  determined  under
           paragraph (2), with the result divided by the amount determined under
           paragraph  (3),  and with the result  then  rounded  to four  decimal
           places, as follows:

           (1) A dollar amount equal to 50% of the smaller of (i) the sum of the
               amount of Base Salary the  Participant  deferred  under this Plan
               for the Plan Year and the Participant's  pre-tax contributions to
               the  Savings  Plan  for  the  Plan  Year,  or  (ii)  8 %  of  the
               Participant's  "compensation" for the Plan Year recognized by the
               Savings Plan for purposes of determining  matching  contributions
               under that Plan (but  disregarding the limit on such compensation
               under Code Section 401(a)(17)); minus

           (2) The dollar amount of matching  contributions actually made to the
               Savings Plan for the Participant for the Plan Year; divided by

           (3) The average of the high and low sale prices of a Common  Share on
               the New York Stock  Exchange on the  business day  preceding  the
               date the matching contribution is made to the Savings Plan.

      (b)  Notwithstanding  subsection  (a),  a  Participant  will  receive  the
           Company Credit for a Plan Year only if the  Participant  participates
           in the Savings  Plan and makes the maximum  dollar  amount of pre-tax
           contribution permitted by the Savings Plan for that year.

      (c)  The Company Credit for an eligible  Participant  for a Plan Year will
           be allocated to the Participant's  Nondirectable Stock Account on the
           date the  matching  contribution  for such Plan Year is (or would be)
           made under the Savings Plan.

      (d)  Each Participant's Nondirectable Stock Account shall also be credited
           with any Common Shares  deferred under any annual  incentive plan, or
           other plan that may be established  by the Company,  for that portion
           of the award which is otherwise payable in Common Shares. Such credit
           shall  occur as of the date such  shares  would  otherwise  have been
           distributed to the Participant.

      (e)  Notwithstanding  the  foregoing,  the Company  Credits for the period
           from July I to  December  31, 1998 under this  Section  will be based
           only on compensation and contributions during that period.

     Sec. 4.3 Investment Credits and Valuation of Accounts. The Accounts of each
Participant  will be adjusted as of each  Valuation  Date to reflect  Investment
Credits,  deferrals  allocated to the Account  under Sec. 4. 1, Company  Credits
allocated under Sec. 4.2, credits to Stock Accounts

                                       -7-


<PAGE>


under Sec. 4.4,  adjustments of Stock Accounts under Sec. 4.5, and distributions
from Accounts under Article V, since the previous Valuation Date, subject to the
following:

      (a)  Investment  Credits  on  each  Cash  Account  will  be  based  on the
           investment  index or indexes  selected by the  Participant to measure
           the  deemed  rate of  investment  return on his or her  Account.  The
           investment  indexes will be the same as the investment  options under
           the  Savings  Plan  (except  the NCE  Stock  Fund),  and  such  other
           investment  options as the Committee  makes available under this Plan
           from time to time.

      (b)  A Participant may file separate investment elections for the existing
           Cash  Account  balance  and for future  amounts to be credited to the
           Participant's  Cash Account  and/or  Directable  Stock  Account.  The
           Participant may also elect to have amounts transferred between his or
           her Cash Account and Directable  Stock Account.  The amount of Common
           Shares to be credited upon a transfer into a Directable Stock Account
           shall be determined as provided in Sec. 4. 1 (c).

      (c)  All investment  elections  shall be in accordance with such rules and
           regulations  as the Committee may  establish  from time to time.  The
           Committee may also  establish  such  procedures  for the valuation of
           Accounts as the  Committee  determines  in its sole  discretion  will
           reasonably  reflect the period of time amounts were  credited to each
           Account.

      (d)  Notwithstanding the foregoing,  the Committee may modify or disregard
           an  investment  election  filed by a  Participant  to the  extent the
           Committee determines that such action is necessary to comply with the
           terms  of this  Plan or to  avoid  adverse  tax  consequences  to the
           Participant or the Participating Employers.

      (e)  Notwithstanding   anything   in  the  Plan  to  the   contrary,   the
           Participating  Employers shall be under no obligation to purchase any
           investments  used for determining  Investment  Credits or to purchase
           Common  Shares.  The  investment  indexes and Common  Shares are used
           solely for the recordkeeping purpose of measuring gains and losses on
           each Participant's  Accounts,  and the Participant's Accounts are not
           actually being invested in the indexes or in Common Shares.

     Sec. 4.4 Dividends on Common  Shares.  Each  Participant's  Stock  Accounts
shall be credited as of each  dividend  payment date for Common Shares with that
number of shares obtained by dividing:

      (a)  the  amount of any  dividends  that would be payable on the number of
           shares  (including  fractional  shares,  carried out to four  decimal
           places)  credited to each Stock Account of such Participant as of the
           record date for payment of such dividend, by

      (b)  the  average of the high and low sale price of a Common  Share on the
           New  York  Stock  Exchange  on the  day  preceding  the  date of such
           dividend payment.

      See. 4.5 Adjustment of Stock Accounts for Splits,  Dividends,  Etc. In the
event of any change in the outstanding Common Shares of the Company by reason of
any share dividend or split, recapitalization,  merger, consolidation, spin-off,
reorganization,  combination  or  exchange  of Common  Shares  or other  similar
corporate change, the Committee shall make appropriate  adjustment in the number
of the Common Shares in the Participants' Stock Accounts.

                                       -8-


<PAGE>


                                    ARTICLE V

                            DISTRIBUTION OF ACCOUNTS

     Sec. 5.1 Time for Distribution. Except as provided in Sec. 5.5 and the last
paragraph of this Section,  all Account  balances  shall be  distributed  to the
Participant or Beneficiary within 30 days after the earliest to occur of:

      (a) The Participant's Retirement,

      (b) The  date the  Participant  is  determined  by the  Committee  to have
          incurred a Disability.

      (c) The date of the Participant's death.

      (d) Any  other  termination  of the  Participant's  employment  with  the
          Participating Employers.

However,  any Company  Credit for the final  partial Plan Year of  participation
shall  be  distributed  at  the  time  it  is  credited  to  the   Participant's
Nondirectable Stock Account.

     Sec. 5.2 Manner of Payment. The balance in a Participant's Cash Account and
the value of whole and  fractional  shares in the  Participant's  Stock Accounts
shall be paid in cash in a single lump sum payment.

      Sec.  5.3 Amount of  Payment.  The amount of cash to be  distributed  to a
Participant with respect to the Participant's  Cash Account shall be the balance
of such account as of the end of the month prior to the distribution. The amount
of cash to be  distributed  to a Participant  with respect to the  Participant's
Stock Accounts shall be the number of shares credited to such Accounts as of the
end of the month prior to the distribution multiplied by the average of the high
and low sales price of a Common Share on the New York Stock Exchange on the last
trading day of the month prior to the distribution.

      Sec. 5.4 Beneficiary Designation Each Participant shall have the right, at
any time, to designate any person or persons as Beneficiary or  Beneficiaries to
whom  payments  under this Plan shall be made in the event of the  Participant's
death prior to complete distribution of the amount credited to the Participant's
Accounts. Each Participant shall have the right to change his or her Beneficiary
designation at any time. Each  Beneficiary  designation  shall become  effective
only when filed in writing with the Committee during the Participant's life on a
form  prescribed  by the  Committee.  The  rights of each  Beneficiary  shall be
subject to the terms and  conditions  specified on the  designation  form to the
extent  consistent  with  the  terms  of the  Plan.  If a  Participant  fails to
designate a Beneficiary as provided  above,  or if all designated  Beneficiaries
predecease the  Participant,  then the  Beneficiary  shall be the  Participant's
estate.

     Sec. 5.5 Distributions for Severe Financial  Hardship.  Notwithstanding the
foregoing  sections of this Article V, the Committee in its sole  discretion may
approve a request  by a  Participant  for a  withdrawal  from the  Participant's
deferred amounts due to an unforeseeable emergency. An "unforeseeable emergency"
is severe  financial  hardship to the  Participant  resulting  from a sudden and
unexpected  illness or accident of the Participant or of a dependent (as defined
in Code Sec. 152(a) of the Participant,  loss of the Participant's  property due
to casualty, or other similar extraordinary and

                                       -9-


<PAGE>


unforeseeable  circumstances  caused  by an  event  beyond  the  control  of the
Participant.  Unforeseeable  emergencies specifically do not include the need to
pay for the education of a Participant's child or the desire to purchase a home.
Any such early  withdrawal  approved by the  Committee may not exceed the amount
reasonably  necessary  to meet  the  emergency.  Payment  may not be made to the
extent that such hardship is or may be relieved by any of the following means:

      (a)  Through reimbursement or compensation by insurance or otherwise.

      (b)  By  liquidation  of  the  Participant's  assets,  to the  extent  the
           liquidation  of such assets would not itself  cause severe  financial
           hardship.

      (c) By cessation of deferrals under the Plan.

     Sec. 5.6 Modification of Elections for Tax Considerations.  Notwithstanding
anything to the contrary in the  foregoing  sections of this Article V or in any
election filed by a Participant:

      (a)  If the  Committee  determines,  based on advice of legal counsel or a
           final  determination  by the Internal  Revenue  Service or a court of
           competent jurisdiction, that a Participant or Beneficiary may be held
           to be in  constructive  receipt  of  benefits  under  this  Plan  and
           required to recognize such benefit  immediately or retroactively  for
           income tax purposes,  the Committee may in its sole  discretion  take
           either of the following actions:

           (1) Distribute  the entire  affected  benefit in a single lump sum as
               soon as administratively feasible.

           (2) Take written action modifying the  Participant's  election and/or
               the terms of the Plan  (retroactively,  if necessary) in a manner
               that win eliminate the allegation of  constructive  receipt while
               at the same time carrying out the  Participant's  original intent
               to the extent possible.

      (b)  The Committee may postpone any payment to be made to a Participant or
           Beneficiary  until a  subsequent  fiscal  year  of the  Participating
           Employers to the extent the  Committee  determines to be necessary in
           order to avoid the loss of an income tax deduction under Code Section
           162(m).

      Sec. 5.7 Withholding and Taxes. The benefits payable under this Plan shall
be subject to the  deduction  of any  federal,  state,  or local income taxes or
other taxes which are required to be withheld  from such  payments by applicable
laws and  regulations.  Any Social  Security (FICA) taxes which must be withheld
prior to the distribution of benefits to the Participant  shall be withheld from
the  amounts  deferred,  or  from  the  Participant's  other  compensation,   as
determined by the Committee.  The Participating  Employers provide no assurances
or guarantees  regarding the tax treatment of amounts  deferred or payments made
under this Plan.  Each  Participant  is solely  responsible  for any  applicable
income, excise and other taxes,  penalties or interest (including any excise tax
under Code Section 4999).

                                      -10-


<PAGE>


                                   ARTICLE VI

                                 ADMINISTRATION

      Sec. 6.1  Administration by the Committee.  The Committee shall administer
the Plan, shall establish, adopt, or revise such rules and regulations as it may
deem necessary or advisable for the  administration  of the Plan, and shall have
discretionary   authority  to  interpret  the   provisions  of  the  Plan.   The
interpretations of the Committee shall be conclusive on all parties.

     Sec. 6.2 Claims  Procedure.  A Participant or Beneficiary  may make a claim
for Plan  benefits by filing a written  request  with the  Committee.  The claim
shall be  determined  by the  Committee  within 90 days after the receipt of the
written claim  (unless the Committee  extends the period for up to an additional
90 days).

      (a)  Notice  of the  Committee's  decision  shall be  communicated  to the
           claimant in writing. If the claim is denied, the notice shall include
           the specific reasons for the denial (including reference to pertinent
           Plan  provisions),  a  description  of  any  additional  material  or
           information  necessary for the Committee to reconsider the claim, the
           reasons for any of such additional  material or  information,  and an
           explanation of the review procedure.

     (b)  The claimant or a duly authorized  representative  may, within 60 days
          after  receiving  such  written  notice,  request in writing  that the
          Committee review its decision. The Committee may afford the claimant a
          hearing and shall afford the claimant  the  opportunity  to review all
          pertinent  documents  and  submit  issues  and  comments  orally or in
          writing.  The  Committee  shall  render a review  decision  in writing
          within 60 days  after  receipt  of  request  for  review  (unless  the
          Committee  extends the review period for up to an additional 60 days).
          The review  proceeding shall be conducted in accordance with the rules
          and regulations adopted from time to time by the Committee.

                                   ARTICLE VII

                            AMENDMENT AND TERMINATION

      Sec.  7.1  Amendment.  The Plan may be  amended in whole or in part at any
time for any reason by action of the  Board,  or by action of any person to whom
that authority has been delegated by the Board.  No amendment shall decrease the
benefits  under the Plan which have accrued prior to the date such  amendment is
adopted,  but may modify  future  Investment  Credits to  Accounts or the deemed
investments of Accounts in periods following the amendment.

      See. 7.2  Termination  of Plan. The Company,  by action of the Board,  may
terminate the Plan at any time. After such termination, no employee shall become
a Participant,  and no further amounts shall be credited pursuant to Sec. 4.1 or
Sec. 4.2 to Accounts of  Participants.  At the  discretion  of the Company,  the
amounts  credited to the Accounts of Participants  may be either (i) distributed
to  Participants  as of a date determined by the Company which is after the date
of  termination  based on  values  determined  as of the  last day of the  month
preceding the distribution, or (ii) distributed in accordance with Article V.

                                      -11-

<PAGE>


                                  ARTICLE VIII

                                  MISCELLANEOUS

      Sec. 8.1  Unsecured  Obligations.  A  Participant's  credits in his or her
Accounts shall be an unsecured obligation of the Participating  Employers to pay
the  Participant  (or  the  Participant's  Beneficiary,  in  the  event  of  the
Participant's  death) the actual amount of the credits at the time designated in
Article V. Each  Participant or  Beneficiary  is only a general  creditor of the
Participating  Employers  with  respect  to his or her  Accounts.  Accounts  are
maintained  for  recordkeeping  purposes  only.  Notwithstanding  the foregoing,
obligations  to pay benefits  under this Plan may be satisfied by  distributions
from a grantor  trust  created by the  Company in its sole  discretion  for such
purpose.  Each Participant  shall cooperate with the Committee and shall execute
any documents or submit to any physical  examination  reasonably required by the
Committee in connection with the administration of the Plan.

      Sec. 8.2 Benefits May Not Be Assigned or Alienated.  Neither a Participant
nor any Beneficiary shall have the right to sell, assign, transfer,  encumber or
otherwise  convey any right to receive  any  payment  hereunder.  No part of the
amounts payable  hereunder shall be subject to seizure or sequestration  for the
payment of any debts or judgments  owed by a  Participant  or any other  person.
However,  the Committee may offset the  obligations  to the  Participant  or the
Participant's  Beneficiary  hereunder by any amounts the Participant owes to the
Participating Employers,  provided that such amounts owed by the Participant are
not  related  in any way to the  benefits  payable  under this Plan and were not
incurred in  anticipation  of the benefits to which the  Participant  may become
entitled hereunder.

      Sec. 8.3  Incompetency.  Every person receiving or claiming benefits under
this Plan shall be conclusively presumed to be mentally competent until the date
on which the Committee receives a written notice in a form and manner acceptable
to  the  Committee  that  such  person  is  incompetent  and  that  a  guardian,
conservator  or other person  legally  vested with the care of his or her estate
has been appointed. In such event, the Committee may direct payments of benefits
to such  guardian,  conservator  or other person legally vested with the care of
the person's estate and any such payments so made shall be a complete  discharge
of the Participating Employers to the extent so made.

     Sec.  8.4  Notices.  Notices  required  by  this  Plan to be  given  to the
Committee or a  Participant  shall be in writing and shall be considered to have
been duly  given or  served if  personally  delivered,  or sent by first  class,
certified or registered mail.

     Sec. 8.5 Severability.  The invalidity or partial invalidity of any portion
of this Plan shall not  invalidate  the remainder  thereof,  and said  remainder
shall remain in full force and effect.

     Sec.  8.6  Headings.  Headings at the  beginning  of articles  and sections
hereof are for  convenience of reference,  shall not be considered a part of the
text of the Plan, and shall not influence its construction.

     Sec. 8.7 Capitalized Definitions . Capitalized terms used in the Plan shall
have their meaning as defined in the Plan unless the context  clearly  indicates
to the contrary.

     Sec.  8.8  Gender.  Any  references  to the  masculine  gender  include the
feminine and vice versa.

                                      -12-


<PAGE>


     Sec.  8.9 Use of  Compounds  of Word  "Here".  Use of the  words  "hereof",
"herein",  "hereunder".  or similar  compounds of the word "here" shall mean and
refer to the entire Plan unless the context clearly indicates to the contrary.

     Sec.  8.10 Construed  as a Whole.  The  provisions  of the Plan shall be
construed  as a whole in such manner as to carry out the  provisions  hereof and
shall not be construed separately without relation to the context.

      IN WITNESS WHEREOF, the Company has caused this Plan to be executed by its
duly authorized officer this 3rd day of August 1998.

                                                NEW CENTURY ENERGIES, INC.

                                                By:  /s/Bill D. Helton        
                                                     Its Chief Executive Officer


                                      -13-


                                                                  Exhibit 10(g)1

                              NEW CENTURY ENERGIES

                      SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                                FOR KEY MANAGERS

                       (As Adopted Effective July 1, 1998)



<PAGE>


                              NEW CENTURY ENERGIES
                      SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                                FOR KEY MANAGERS

                                TABLE OF CONTENTS

ARTICLE I GENERAL

   Sec. 1.1 Name of Plan.............................................    1
   Sec. 1.2 Purpose..................................................    1
   Sec. 1.3 Effective Date...........................................    1
   Sec. 1.4 Company..................................................    1
   Sec. 1.5 Participating Employers .................................    1
   Sec. 1.6 Construction and Applicable Law .........................    1

ARTICLE II DEFINITIONS

   Sec. 2.1 Accounts.................................................    2
   Sec. 2.2 Base Salary..............................................    3
   Sec. 2.3 Beneficiary..............................................    3
   Sec. 2.4 Board....................................................    3
   Sec. 2.5 Code.....................................................    3
   Sec. 2.6 Committee................................................    3
   Sec. 2.7 Common Shares............................................    3
   Sec. 2.8 Company Credits..........................................    3
   Sec. 2.9 Compensation.............................................    3
   Sec. 2.10 Disability..............................................    3
   Sec. 2.11 ERISA...................................................    3
   Sec. 2.12 Investment Credits......................................    3
   Sec. 2.13 Participants............................................    3
   Sec. 2.14 Plan Year...............................................    4
   Sec. 2.15 Prior PSCo Plan.........................................    4
   Sec. 2.16 Prior SPS Plan..........................................    4
   Sec. 2.17 Retirement..............................................    4
   Sec. 2.18 Savings Plan............................................    4
   Sec. 2.19 Successor Employer......................................    4
   Sec. 2.20 Valuation Date..........................................    4

ARTICLE III PARTICIPATION

   Sec. 3.1 Eligibility for Participation ...........................    4
   Sec. 3.2 Duration of Participation ...............................    5
   Sec. 3.3 No Guarantee of Employment ..............................    5

ARTICLE IV DEFERRED COMPENSATION AND CREDITS TO ACCOUNTS

   Sec. 4.1 Election to Defer Compensation ..........................    5
   Sec. 4.2 Company Credits .........................................    7

                                       -i-


<PAGE>


   Sec. 4.3 Investment Credits and Valuation of Accounts ............    8
   Sec. 4.4 Dividends on Common Shares ..............................    8
   Sec. 4.5 Adjustment of Stock Accounts for Splits, Dividends, Etc .    9

ARTICLE V DISTRIBUTION OF ACCOUNTS

   Sec. 5.1 Time for Distribution ...................................    9
   Sec. 5.2 Manner of Payment .......................................    9
   Sec. 5.3 Amount of Payment .......................................    9
   Sec. 5.4 Beneficiary Designation . ...............................    9
   Sec. 5.5 Distributions for Severe Financial Hardship .............   10
   Sec. 5.6 Modification of Elections for Tax Considerations ........   10
   Sec. 5.7 Withholding and Taxes ...................................   11

ARTICLE VI ADMINISTRATION

   Sec. 6.1 Administration by the Committee .........................   11
   Sec. 6.2 Claims Procedure ........................................   11

ARTICLE VII AMENDMENT AND TERMINATION

   Sec. 7.1 Amendment................................................   12
   Sec. 7.2 Termination of Plan .....................................   12

ARTICLE VIII MISCELLANEOUS

Sec. 8.1 Unsecured Obligations ......................................   12
Sec. 8.2 Benefits May Not Be Assigned or Alienated ..................   12
Sec. 8.3 Incompetency ...............................................   12
Sec. 8.4 Notices ....................................................   13
Sec. 8.5 Severability................................................   13
Sec. 8.6 Headings....................................................   13
Sec. 8.7 Capitalized Definitions ....................................   13
Sec. 8.8 Gender......................................................   13
Sec. 8.9 Use of Compounds of Word "Here" ............................   13
Sec. 8.10 Construed as a Whole.......................................   13


                                      -ii-


<PAGE>


                              NEW CENTURY ENERGIES
                      SALARY DEFERRAL AND SUPPLEMENTAL SAVINGS PLAN
                                FOR KEY MANAGERS

                                    ARTICLE I

                                     GENERAL

     Sec. 1.1 Name of Plan.  The name of this plan is the "New Century  Energies
Salary  Deferral and  Supplemental  Savings Plan for Key Managers"  (referred to
hereinafter as the "Plan").

      Sec.  1.2 Purpose.  The Plan has been  established  to provide  additional
future  income  to  certain  key  managers   through   voluntary   deferrals  of
Compensation  and Company  Credits related to matching  contributions  under the
Savings  Plan.  The Prior  PSCo Plan and the  Prior  SPS  Plan,  other  than the
portions of those plans which covered  individuals  who are  participants in the
New Century Energies Salary Deferral and Supplemental Savings Plan for Executive
Officers  on July 1,  1998,  were  merged  into this Plan as of that  date.  The
benefits  of all  individuals  covered by the  portions of the Prior Plans which
were  merged  into  this Plan  shall  thereafter  be  provided  pursuant  to the
provisions of this Plan. If an  individual's  benefit from a Prior Plan has been
merged into this Plan but the  individual  is not  designated  as a  Participant
under  this  Plan,  the  individual  shall   nevertheless  be  deemed  to  be  a
"Participant"  under the  provisions  of this Plan (other  than  Article III and
Sections  4.1 and 4.2) until the  benefits  with  respect to the Prior Plan have
been distributed.

     Sec. 1.3 Effective  Date. The "Effective  Date" of the Plan, the date as of
which the Plan was established, is July 1, 1998.

     Sec. 1.4 Company.  For purposes of this Plan,  "Company"  means New Century
Energies, Inc., a Delaware corporation, and any Successor Employer thereof.

      Sec. 1.5 Participating Employers The Company is a "Participating Employer"
in the Plan. Any subsidiary of the Company shall become a Participating Employer
in this Plan upon being .so  designated  in a written  action by the  Committee,
effective as of the date specified by the Committee. Any Successor Employer to a
Participating  Employer shall also be a Participating  Employer. A Participating
Employer  shall cease to be such effective as of the date specified in a written
action by the  Committee;  provided,  however,  that such action shall not cause
Participants employed by such employer to forfeit benefits accrued prior to such
date.

      Sec. 1.6  Construction  and Applicable  Law. The Plan is intended to be an
unfunded  plan  maintained  primarily  for the  purpose  of  providing  deferred
compensation for a select group of management or highly  compensated  employees,
within the meaning of Sections  201(2),  301(a)(3) and  401(a)(1) of ERISA.  The
Plan is not intended to qualify  under Code Section  401(a) or 403(a).  The Plan
shall be administered and construed  consistent with said intent. This Plan also
shall be governed  and  construed  in  accordance  with the laws of the State of
Colorado as applied to contracts executed and to be wholly performed within said
state to the extent that such laws are not  preempted  by the laws of the United
States of America.



<PAGE>


                                   ARTICLE II

                                   DEFINITIONS

     Sec.  2.1  Accounts.  "Accounts"  shall be  established  for each  eligible
Participant  reflecting the amounts owed to the Participant or the Participant's
Beneficiary  under  the  terms  of this  Plan.  The  following  Accounts  may be
established for each Participant:

      (a)  Cash Account.  A Cash Account shall be  established to which shall be
           credited  the amounts of  Compensation  deferred  by the  Participant
           under Sec.  4.1 (other than  amounts the  Participant  has elected to
           have  deposited  in his or her  Directable  Stock  Account)  and  the
           Investment  Credits  under Sec. 4.3 related to those  deferrals.  The
           Committee may maintain sub-accounts for a Participant within the Cash
           Account to reflect the investment options for that Account under Sec.
           4.3.

      (b)  Stock  Accounts.  The  following  types  of Stock  Accounts  shall be
           established for a Participant:

           (1) Directable  Stock  Account. The  Participant's  Directable  Stock
               Account  shall be  credited  with  all  amounts  of  Compensation
               deferred  by the  Participant  under  Sec.  4.1  and  accumulated
               Investment  Credits on those  deferrals which the Participant has
               elected to be deemed to have been invested in Common Shares.

           (2) Nondirectable  Stock  Account.  The  Participant's  Nondirectable
               Stock  Account  shall  be  credited  with  any  Company   Credits
               determined  under Sec.  4.2, and  adjustments  under Sec. 4.4 and
               Sec. 4.5 related to those credits.

      (c)  Prior  Plan  Accounts.  The,  Accounts  of  an  individual  who  is a
           Participant  in  this  Plan on July 1,  1998  (or is  deemed  to be a
           Participant for certain purposes  pursuant to Sec. 1.2) and who was a
           participant  in the Prior PSCo Plan or the Prior SPS Plan on June 30,
           1998, shall be initially credited as of July 1, 1998. as follows:

           (1) The Participant's Cash Account shall be credited with the balance
               credited to his or her cash  account in the Prior PSCo Plan as of
               June 30, 1998 and the Participant's  Nondirectable  Stock Account
               shall be credited  with the number of Common  Shares  credited to
               his or her stock account under the Prior PSCo Plan as of June 30,
               1998.

           (2) The  Participant's  Nondirectable  Stock  Account win be credited
               with  a  number  of  Common  Shares  equal  to the  value  of the
               Participant's  matching  account under the Prior SPS Plan on June
               30, 1998, and the Participant's  Directable Stock Account will be
               credited with a number of Common Shares equal to the value of the
               Participant's  other  accounts  under  the Prior SPS Plan on that
               date,  in each case  divided  by the  average of the high and low
               sale prices of a Common  Share on the New York Stock  Exchange on
               June 30, 1998.  This  paragraph  will be applied by assuming that
               June 30, 1998 is a "valuation date" under the Prior SPS Plan.

Each  Participant  is always  100 % vested  in  amounts  credited  to his or her
Accounts.

                                       -2-


<PAGE>


     Sec. 2.2 Base Salary.  "Base  Salary" means a  Participant's  annual salary
rate in effect from time to time during each Plan Year, unreduced for any salary
deferrals under any Company savings, incentive or other employee benefit plan.

     Sec. 2.3 Beneficiary.  "Beneficiary" means the person or persons designated
as such pursuant to the provisions of Sec. 5.4.

      Sec. 2.4 Board. "Board" means the board of directors of the Company.

     Sec. 2.5 Code.  "Code" mean the Internal  Revenue Code of 1986,  as amended
from time to time, and any successor statute.

     Sec. 2.6 Committee.  "Committee"  means the  Compensation  Committee of the
Board or any other  committee  appointed  by the Board to  administer  the Plan.
However,  no member of the Committee who is also a Participant  in this Plan may
participate in or vote or any matter involving the Plan.

     Sec. 2.7 Common  Shares.  "Common  Shares"  means  shares of the  Company's
common stock.

     Sec. 2.8 Company Credits.  "Company  Credits" are the credits  allocable to
the Participant's Nondirectable Stock Account pursuant to Sec. 4.2.

     Sec.  2.9   Compensation.   "Compensation"   for  a  Plan  Year  means  the
compensation  to'.  which the  Participant  is entitled  from the  Participating
Employers  with  respect to the Plan Year,  including  any Base  Salary  payable
during the Plan Year,  any annual  incentive  bonus earned  under the  Company's
annual  incentive plan for the Plan Year and payable in the following Plan Year,
and any cash or Company stock incentive bonus earned for the Plan Year under any
other plan that may be. established by the Company, if so permitted by the terms
of such plan (regardless of when paid).

     Sec.  2.10  Disability.  "Disability"  means,  for  a  period  of  up to 24
consecutive  months,  a  Participant's  inability  as a result of an accident or
illness to perform the essential functions of the Participant's current position
or any position the Participant held within the 90 day 'period immediately prior
to such  accident  or  illness,  and at the end of said  24  month  period,  the
Participant  is  permanently  unable to engage  in any and every  occupation  or
business for  compensation  or profit for which the  Participant  is reasonably.
fitted by education, training or experience.

     Sec. 2.11 ERISA.  "ERISA" means the Employee Retirement Income Security Act
of 1974, as amended from time to time, and any successor statute.

     Sec. 2.12 Investment Credits.  "Investment Credits" are the gains or losses
allocable  to the Cash  Accounts of a  Participant  under Sec.  4.3 based on the
investment indexes elected by the Participant, and adjustments for dividends and
other  transactions to the Participant's  Stock Accounts under Sec. 4.4 and Sec.
4.5.

     Sec.  2.13  Participant.  A  "Participant"  means  any  key  manager  of  a
Participating  Employer who is a Highly Compensated  Employee as defined in Code
Section 414(q),  who has been designated in writing by the Committee as eligible
for this Plan, and who does not  participate in the New Century  Energies Salary
Deferral and Supplemental Savings Plan for Executive Officers. For

                                       -3-



<PAGE>


purposes of applying the $80,000 limit (as adjusted)  under Code Section 414(q),
the Participant's compensation shall not include deferrals made under this Plan.

     Sec.  2.14 Plan  Year.  A "Plan  Year" is the  12-consecutive-month  period
commencing on each January 1 and ending on the following  December 3 1. However,
the first Plan Year of the Plan begins on July 1, 1998 and ends on December  31,
1998.

     Sec.  2.15 Prior  PSCo Plan.  "Prior  PSCo Plan"  means the Public  Service
Company of Colorado Executive Savings Plan, as in effect on June 30, 1998.

     Sec. 2.16 Prior SPS Plan.  "Prior SPS Plan" means the  Southwestern  Public
Service  Company  Non-Qualified  Salary  Deferral Plan, as in effect on June 30,
1998.

      Sec. 2.17 Retirement. "Retirement" means termination of employment with a
Participating Employer after attaining age 62.

     Sec.  2.18  Savings  Plan.  "Savings  Plan" means the New Century  Energies
Savings Plan, as it may be amended from time to time.

     Sec. 2.19  Successor  Employer.  A "Successor  Employer" is any entity that
succeeds  to the  business  of the  Company  or another  Participating  Employer
through merger,  consolidation,  acquisition of all or substantially  all of its
assets,  or any other means and which elects before or within a reasonable  time
after such succession,  by appropriate action evidenced in writing,  to continue
the Plan.

     Sec. 2.20  Valuation  Date.  "Valuation  Date" means each date on which the
Accounts of Participants  are valued for purposes of this Plan.  Valuation Dates
shall  include the last day of each month and such other dates as the  Committee
determines are necessary or advisable for the administration of the Plan.

                                   ARTICLE III

                                  PARTICIPATION

      Sec.3.1 Eligibility for Participation.  A Participant's  eligibility under
this Plan shall be subject to the following:.

      (a)  The Participant will become eligible to elect to make deferrals under
           Sec. 4.1 and to receive  Company  Credits under Sec. 4.2 effective as
           of the date  specified  by the  Committee  in the  written  notice of
           participation.  However,  deferrals  will not commence under Sec. 4.1
           until  the  effective  date of an  election  filed  pursuant  to that
           section.

      (b)  An  employee  who is  designated  as a  Participant  before  the last
           calendar  quarter of a Plan Year may wait until the following year to
           make deferrals of Compensation or may elect to make deferrals for the
           partial Plan Year (for Compensation earned after the calendar quarter
           of the election to defer),  and in either case such Participant shall
           be eligible  for Company  Credits  under  Section 4.2 for the partial
           Plan Year, unless the Committee  determines otherwise at the time the
           employee is designated as a Participant.

                                           -4-


<PAGE>


     Sec. 3.2 Duration of  Participation.  An employee who becomes a Participant
shall  continue to be  eligible to make  elections  under Sec.  4.1  thereafter,
subject to the following:

      (a)  The Participant's deferrals shall cease on the earliest of

           (1) The  date  the   Participant   terminates   employment  with  the
               Participating Employers.

           (2) The date  specified in a written  notice  issued by the Committee
               revoking the individual's status as a Participant.

           (3) The date the  Participant  fails to meet the  requirements of any
               regulations  which may be issued by the  Department of Labor that
               define  the  phrase   "select   group  of  management  or  highly
               compensated employees" under ERISA.

      (b)  An individual  shall continue to be a Participant for purposes of the
           provisions of the Plan other than Sec. 4.1 or See. 4.2 until the date
           all of his or her Accounts have been distributed.

      (c)  If an employee who has elected to make deferrals under Sec. 4.1 for a
           particular Plan Year is subsequently determined not to be eligible to
           be a Participant for that Plan Year, the employee's deferral election
           for that year will be canceled and any amounts which may have already
           been  deferred  for  that  year  will  be  promptly  refunded  to the
           employee.

     Sec.  3.3 No Guarantee of  Employment.  Participation  in the Plan does not
constitute  a  guarantee  or  contract  of  employment  with  the  Participating
Employers.  Such  participation  shall in no way  interfere  with any rights the
Participating  Employers  would  have in the  absence of such  participation  to
determine the duration of the employee's employment.

                                   ARTICLE IV

                      DEFERRED COMPENSATION AND CREDITS TO ACCOUNTS

      Sec. 4.1 Election to Defer Compensation. An eligible Participant may elect
to have  Compensation with respect to each Plan Year credited to his or her Cash
Account and/or Directable Stock Account rather than being paid in cash,  subject
to any limitations that may be imposed by the Committee. Elections shall be made
on forms  specified by the  Committee  for  purposes of this Plan,  and shall be
filed in the manner specified by the Committee. The Compensation for a Plan Year
of a Participant who elects deferrals under this section shall be reduced by the
percentage or amount so elected, subject to the following:

      (a)  Elections for each Plan Year must be filed during the election period
           specified by the Committee for that Plan Year,  which period must end
           on or prior to  December  31 of the  previous  year,  subject  to the
           following:

          (1)  If an individual (other than a former  Participant) is designated
               as a Participant  during a Plan Year,  any election for that Plan
               Year must be filed within 30 days after the date the  Participant
               received  die  notice  of  participation,   and  deferrals  shall
               commence as of the first day of the  calendar  quarter  after the
               election  is received by the  Committee.  Such an election  shall
               apply to Base Salary payable during that Plan

                                       -5-


<PAGE>


               Year for payroll  periods  beginning on or after the first day of
               said quarter and to any incentive compensation paid for that Plan
               Year which is subject to a requirement that the individual remain
               employed  to a date  that is on or after  the  first  day of said
               quarter.

           (2) A former Participant who is again designated as a Participant may
               not commence deferrals until January 1 of the Plan Year following
               the  designation of  participation,  and an election to defer for
               such Plan Year must be made prior to said January 1.

           (3) Except as provided in paragraph (4),  elections for the Plan Year
               commencing July 1, 1998 must be filed by June 30, 1998.

           (4) Notwithstanding  anything  in  this  Plan to the  contrary,  if a
               Participant was a participant in the Prior PSCo Plan or the Prior
               SPS Plan on June 30,  1998,  any  election  in effect  under such
               Prior Plan shall continue in effect for purposes of this Plan for
               the 1998 Plan Year,  and no new election  shall be allowed  under
               this Plan for that Plan  Year.  Any such  election  under a Prior
               Plan shall not apply to  Compensation  with respect to Plan Years
               commencing after 1998.

     (b)  The Participant may elect to defer either (i) any whole percent (in 10
          % increments) of  Compensation  payable with respect to the Plan Year,
          or (ii) any percent or dollar amount of  Compensation up to the amount
          required for the  Participant to receive the Company Credit under Sec.
          4.2. However,  the total deferrals during any Plan Year may not reduce
          the  Participant's  Compensation  payable during that Plan Year (after
          deduction  of the  deferrals  under this Plan) to less than the dollar
          amount in effect for that Plan Year under  Code  Section  414(q)(1)(B)
          ($80,000 for 1998).

     (c)  The deferred  compensation  credited under this section on behalf of a
          Participant  shall be  allocated  to the  Participant's  Cash  Account
          and/or  Directable Stock Account (as elected by the Participant) as of
          the date that the  Compensation  would otherwise have been paid to the
          Participant  in cash. Ile amount of Common Shares to be allocated to a
          Directable Stock Account shall be determined by dividing the credit by
          the average of the high and low sales prices of a Common  Share-on the
          New York Stock  Exchange on the business day  proceeding  the date the
          credit is made.

      (d)  The  Participant  must file  a  separate  deferral  election for each
           Plan Year with respect to which  deferrals  are to be made under this
           Plan.  An election  for a Plan Year shall become  irrevocable  on the
           first day of that year, subject to subsection (e). Elections will not
           carry over into  subsequent  Plan Years.  However,  an election for a
           particular Plan Year shall apply to all Compensation  with respect to
           that Plan Year,  including  incentive bonuses or other amounts earned
           during that year but paid in subsequent Plan Years.

      (e) Notwithstanding the foregoing provisions of this section:

           (1) All deferrals by a Participant shall cease as of (i) the date the
               Participant  receives a hardship  withdrawal  under any qualified
               defined   contribution   plan  subject  to  Code  Section  401(k)
               maintained by the Company or any of its affiliates which requires
               that  deferrals  be  suspended  for  a  certain  period  of  Lime
               following  such  withdrawal,  or (ii) the  date  the  Participant
               receives a withdrawal from this Plan for severe financial

                                           -6-
<PAGE>

               hardship  due  to an  unforeseeable  emergency  under  Sec.  5.5.
               Deferrals  under this section may not recommence  until the first
               day of the second Plan Year  beginning  after the date  deferrals
               ceased  under the  previous  sentence,  and no further  deferrals
               shall be made from  Compensation with respect to Plan Years prior
               to said second Plan Year.

           (2) The Committee may in its sole  discretion  cancel a Participant's
               deferral election for the current Plan Year (and for Compensation
               not yet paid with  respect to any  previous  Plan Years) upon the
               request of a  Participant  if the  Committee  determines  that an
               event has occurred which would make the Participant  eligible for
               a   withdrawal   for  severe   financial   hardship   due  to  an
               unforeseeable  emergency  under Sec.  5.5.  Deferrals  under this
               section may not recommence until the first day of the second Plan
               Year beginning after the date deferrals ceased under the previous
               sentence,   and  no   further   deferrals   shall  be  made  from
               Compensation with respect to Plan Years prior to said second Plan
               Year. The Participant may request that deferrals cease under this
               paragraph  whether or not the  Participant  requests a withdrawal
               under Sec. 5.5.

     Sec.  4.2  Company  Credits.  Subject to the  Committee's  discretion,  the
Nondirectable  Stock Account of each eligible  Participant  will be credited for
each Plan Year with a Company  Credit  representing  a number of Common  Shares,
determined as follows:

      (a)  The  Company  Credit  for a Plan  Year  will be equal  to the  amount
           determined  under  paragraph  (1) minus the amount  determined  under
           paragraph (2), with the result divided by the amount determined under
           paragraph  (3),  and with the result  then  rounded  to four  decimal
           places, as follows:

           (1) A dollar  amount  equal to 50 % of the  smaller of (i) the sum of
               the amount of Base.  Salary the  Participant  deferred under this
               Plan  for  the   Plan   Year   and  the   Participant's   pre-tax
               contributions  to the Savings Plan for the Plan Year,  or (h) 8 %
               of the Participant's  "compensation" for the Plan Year recognized
               by  the  Savings  Plan  for  purposes  of  determining   matching
               contributions.  under  that Plan (but  disregarding  the limit on
               such compensation under Code Section 401(a)(17));

           (2) The dollar amount of matching  contributions actually made to the
               Savings Plan for the Participant for the Plan Year; divided by

           (3) The average of the high and low sale prices of a Common  Share on
               the New York Stock  Exchange on the  business day  preceding  the
               date the matching contribution is made to the Savings Plan.

      (b)  Notwithstanding  subsection  (a),  a  Participant  will  receive  the
           Company Credit for a Plan Year only if the  Participant  participates
           in the Savings  Plan and makes the maximum  dollar  amount of pre-tax
           contribution permitted by the Savings Plan for that year.

      (c)  The Company Credit for an eligible  Participant  for a Plan Year will
           be allocated to the Participant's  Nondirectable Stock Account on the
           date the  matching  contribution  for such Plan Year is (or would be)
           made under the Savings Plan.

                                           -7-


<PAGE>


      (d)  Each Participant's Nondirectable Stock Account shall also be credited
           with any Common Shares  deferred under any annual  incentive plan, or
           other plan that may be established  by the Company,  for that portion
           of the award which is otherwise payable in Common Shares. Such credit
           shall  occur as of the date such  shares  would  otherwise  have been
           distributed to the Participant.

      (e)  Notwithstanding  the  foregoing,  the Company  Credits for the period
           from July I to  December  31, 1998 under this  Section  will be based
           only on compensation and contributions during that period.

     Sec. 4.3 Investment Credits and Valuation of Accounts. The Accounts of each
Participant  will be adjusted as of each  Valuation  Date to reflect  Investment
Credits,  deferrals  allocated to the Account  under Sec. 4. 1, Company  Credits
allocated under Sec. 4.2, credits to Stock Accounts under Sec. 4.4,  adjustments
of Stock Accounts under Sec. 4.5, and distributions  from Accounts under Article
V, since the previous Valuation Date, subject to the following:

      (a)  Investment  Credits  on  each  Cash  Account  will  be  based  on the
           investment  index or indexes  selected by the  Participant to measure
           the  deemed  rate of  investment  return  on his or her  Account  The
           investment  indexes will be the same as the investment  options under
           the  Savings  Plan  (except  the NCE  Stock  Fund),  and  such  other
           investment  options as the Committee  makes available under this Plan
           from time to time.

      (b)  A Participant may file separate investment elections for the existing
           Cash  Account  balance  and for future  amounts to be credited to the
           Participant's  Cash Account  and/or  Directable  Stock  Account.  The
           Participant may also elect to have amounts transferred between his or
           her Cash Account and Directable  Stock Account.  The amount of Common
           Shares to be credited upon a transfer into a Directable Stock Account
           shall be determined as provided in Sec. 4. 1 (c).

      (c)  All investment  elections  shall be in accordance with such rules and
           regulations  as the Committee may  establish  from time to time.  The
           Committee may also  establish  such  procedures  for the valuation of
           Accounts as the  Committee  determines  in its sole  discretion  will
           reasonably  reflect the period of time amounts were  credited to each
           Account.

      (d)  Notwithstanding the foregoing,  the Committee may modify or disregard
           an  investment  election  filed by a  Participant  to the  extent the
           Committee determines that such action is necessary to comply with the
           terms  of this  Plan or to  avoid  adverse  tax  consequences  to the
           Participant or the Participating Employers.

      (e)  Notwithstanding   anything   in  the  Plan  to  the   contrary,   the
           Participating  Employers shall be under no obligation to purchase any
           investments  used for determining  Investment  Credits or to purchase
           Common  Shares.  The  investment  indexes and Common  Shares are used
           solely for the recordkeeping purpose of measuring gains and losses on
           each Participant's  Accounts,  and the Participant's Accounts are not
           actually being invested in the indexes or in Common Shares.

     Sec. 4.4 Dividends on Common  Shares.  Each  Participant's  Stock  Accounts
shall be credited as of each  dividend  payment date for Common Shares with that
number of shares obtained by dividing:

                                       -8-


<PAGE>


      (a)  the  amount of any  dividends  that would be payable on the number of
           shares  (including  fractional  shares,  carried out to four  decimal
           places)  credited to each Stock Account of such Participant as of the
           record date for payment of such dividend, by

      (b)  the  average of the high and low sale price of a Common  Share on the
           New  York  Stock  Exchange  on the  day  preceding  the  date of such
           dividend payment.

      Sec. 4.5  Adjustment of Stock Accounts for Splits,  Dividends,  Etc In the
event of any change in the outstanding Common Shares of the Company by reason of
any share dividend or split, recapitalization,  merger, consolidation, spin-off,
reorganization,  combination  or  exchange  of Common  Shares  or other  similar
corporate change, the Committee shall make appropriate  adjustment in the number
of the Common Shares in the Participants' Stock Accounts.

                                    ARTICLE V

                            DISTRIBUTION OF ACCOUNTS

     Sec. 5.1 Time for Distribution. Except as provided in Sec. 5.5 and the last
paragraph of this Section,  all Account  balances  shall be  distributed  to the
Participant or Beneficiary within 30 days after the earliest to occur of

      (a) The Participant's Retirement,

      (b)  The date the  Participant  is  determined  by the  Committee  to have
           incurred a Disability.

      (c) The date of the Participant's death.

      (d)  Any  other  termination  of the  Participant's  employment  with  the
           Participating Employers.

However,  any Company  Credit for the final  partial Plan Year of  participation
shall  be  distributed  at  the  time  it  it  credited  to  the   Participant's
Nondirectable Stock Account.

     Sec. 5.2 Manner of Payment. The balance in a Participant's Cash Account and
the value of whole and  fractional  shares in the  Participant's  Stock Accounts
shall be paid in cash in a single lump sum payment.

      Sec.  5.3 Amount of  Payment.  The amount of cash to be  distributed  to a
Participant with respect to the Participant's  Cash Account shall be the balance
of such account as of the end of the month prior to the distribution. The amount
of cash to be  distributed  to a Participant  with respect to the  Participant's
Stock Accounts shall be the number of shares credited to such Accounts as of the
end of the month prior to the distribution multiplied by the average of the high
and low sales price of a Common Share on the New York Stock Exchange on the last
trading day of the month prior to the distribution.

     Sec. 5.4 Beneficiary Designation. Each Participant shall have the right, at
any time, to designate any person or persons as Beneficiary or  Beneficiaries to
whom  payments  under this Plan shall be made in the event of the  Participant's
death prior to complete distribution of the amount credited to the Participant's
Accounts. Each Participant shall have the right to change his or her Beneficiary

                                       -9-


<PAGE>


designation at any time. Each  Beneficiary  designation  shall become effective
only when filed in writing with the Committee during the Participant's life on a
form  prescribed  by the  Committee.  The  rights of each  Beneficiary  shall be
subject to the terms and  conditions  specified on the  designation  form to the
extent  consistent  with  the  terms  of the  Plan.  If a  Participant  fails to
designate a Beneficiary as provided  above,  or if all designated  Beneficiaries
predecease the  Participant,  then the  Beneficiary  shall be the  Participant's
estate.

      Sec. 5.5 Distributions for Severe Financial Hardship.  Notwithstanding the
foregoing  sections of this Article V, the Committee in its sole  discretion may
approve a request  by a  Participant  for a  withdrawal  from the  Participant's
deferred amounts due to an unforeseeable emergency. An "unforeseeable emergency"
is severe  financial  hardship to the  Participant  resulting  from a sudden and
unexpected  illness or accident of the Participant or of a dependent (as defined
in Code Sec. 152(a) of the Participant,  loss of the Participant's  property due
to casualty,  or other similar  extraordinary  and  unforeseeable  circumstances
caused  by an  event  beyond  the  control  of  the  Participant.  Unforeseeable
emergencies  specifically  do not  include-  the need to pay for  education of a
Participant's  child or the desire to purchase a home. Any such early withdrawal
approved by the Committee may not exceed the amount reasonably necessary to meet
the  emergency.  Payment may not be made to the ixtent that such  hardship is or
may be relieved by any of the following means:

      (a)  Through reimbursement or compensation by insurance or otherwise.

      (b)  By  liquidation  of  the  Participant's  assets,  to the  extent  the
           liquidation  of such assets would not itself  cause severe  financial
           hardship.

      (c) By cessation of deferrals under the Plan.

     Sec. 5.6 Modification of Elections for Tax Considerations.  Notwithstanding
anything to the contrary in the  foregoing  sections of this Article V or in any
election filed by a Participant:

      (a)  If the  Committee  determines,  based on advice of legal counsel or a
           final  determination  by the Internal  Revenue  Service or a court of
           competent jurisdiction, that a Participant or Beneficiary may be held
           to be in  constructive  receipt  of  benefits  under  this  Plan  and
           required to recognize such, benefit  immediately or retroactively for
           income tax purposes,  the Committee may in its sole  discretion  take
           either of the following actions:

           (1) Distribute  the entire  affected  benefit in a single lump sum as
               soon as administratively feasible.

           (2) Take written action modifying the  Participant's  election and/or
               the terms of the Plan  (retroactively,  if necessary) in a manner
               that will eliminate the allegation of constructive  receipt while
               at the same time carrying out the  Participant's  original intent
               to the extent possible.

      (b)  The Committee may postpone any payment to be made to a Participant or
           Beneficiary  until a  subsequent  fiscal  year  of the  Participating
           Employers to the extent the  Committee  determines to be necessary in
           order to avoid the loss of an income tax deduction under Code Section
           162(m).

                                      -10-


<PAGE>



      Sec. 5.7 Withholding and Taxes. The benefits payable under this Plan shall
be subject to the  deduction  of any  federal,  state,  or local income taxes or
other taxes which are required to be withheld  from such  payments by applicable
laws and  regulations.  Any Social  Security (FICA) taxes which must be withheld
prior to the distribution of benefits to the Participant  shall be withheld from
the  amounts  deferred,  or  from  the  Participant's  other  compensation,   as
determined by the Committee.  The Participating  Employers provide no assurances
or guarantees  regarding the tax treatment of amounts  deferred or payments made
under this Plan.  Each  Participant  is solely  responsible  for any  applicable
income, excise and other taxes,  penalties or interest (including any excise tax
under Code Section 4999)

                                   ARTICLE VI

                                 ADMINISTRATION

      Sec. 6.1  Administration by the Committee.  The Committee shall administer
the Plan, shall establish, adopt, or revise such rules and regulations as it may
deem necessary or advisable for the  administration  of the Plan, and shall have
discretionary   authority  to  interpret   the   provision  of  the  Plan.   The
interpretations of the Committee shall be conclusive on all parties.

     Sec. 6.2 Claims  Procedure.  A Participant or Beneficiary  may make a claim
for Plan  benefits by filing a written  request  with the  Committee.  The claim
shall be  determined  by the  Committee  within 90 days after the receipt of the
written claim  (unless the Committee  extends the period for up to an additional
90 days).

     (a)   Notice  of the  Committee's  decision  shall be  communicated  to the
           claimant in writing. If the claim is denied, the notice shall include
           the specific reasons for the denial (including reference to pertinent
           Plan  provisions),  a  description  of  any  additional  material  or
           information  necessary for the Committee to reconsider the claim, the
           reasons for any of such additional  material or  information,  and an
           explanation of the review procedure.

     (b)  The claimant or duly  authorized  representative  may,  within 60 days
          after  receiving  such  written  notice,  request in writing  that the
          Committee review its decision. The Committee may afford the claimant a
          hearing and shall afford the claimant  the  opportunity  to review all
          pertinent  documents  and  submit  issues  and  comments  orally or in
          writing.  The  Committee  shall  render a review  decision  in writing
          within 60 days  after  receipt  of  request  for  review  (unless  the
          Committee  extends the review period for up to an additional 60 days).
          The review  proceeding shall be conducted in accordance with the rules
          and regulations adopted from time to time by the Committee.





                                      -11-


<PAGE>



                                   ARTICLE VII

                            AMENDMENT AND TERMINATION

      Sec.  7.1  Amendment.  The Plan may be  amended in whole or in part at any
time for any reason by action of the  Board,  or by action of any person to whom
that authority has been delegated by the Board.  No amendment shall decrease the
benefits  under the Plan which have accrued prior to the date such  amendment is
adopted,  but may modify  future  Investment  Credits to  Accounts or the deemed
investments of Accounts in periods following the amendment.

      Sec. 7.2  'Termination of Plan. The Company,  by action of the Board,  may
terminate the Plan at any time. After such termination, no employee shall become
a Participant,  and no further amounts shall be credited pursuant to Sec. 4.1 or
Sec. 4.2 to Accounts of  Participants.  At the  discretion  of the Company,  the
amounts  credited to the Accounts of Participants  may be either (i) distributed
to  Participants  as of a date determined by die Company which is after the date
of  termination  based on  values  determined  as of the  last day of the  month
preceding- the distribution, or (ii) distributed in accordance with Article V.

                                  ARTICLE VIII

                                  MISCELLANEOUS

      Sec. 8.1  Unsecured  Obligations.  A  Participant's  credits in his or her
Accounts shall be an unsecured obligation of the Participating  Employers to pay
the  Participant  (or  the  Participant's  Beneficiary,  in  the  event  of  the
Participant's  death) the actual amount of the credits at the time designated in
Article V. Each  Participant or  Beneficiary  is only a general  creditor of the
Participating  Employers  with  respect  to his or her  Accounts.  Accounts  are
maintained  for  recordkeeping  purposes  only.  Notwithstanding  the foregoing,
obligations  to pay benefits  under this Plan may be satisfied by  distributions
from a grantor  trust  created by the  Company in its sole  discretion  for such
purpose.  Each Participant  shall cooperate with the Committee and shall execute
any documents or submit to any physical  examination  reasonably required by the
Committee in connection with the administration of the Plan.

      Sec. 8.2 Benefits May Not Be Assigned or Alienated.  Neither a Participant
nor any Beneficiary shall have the right to sell, assign, transfer,  encumber or
otherwise  convey any right to receive  any  payment  hereunder.  No part of the
amounts payable  hereunder shall be subject to seizure or sequestration  for the
payment of any debts or judgments  owed by a  Participant  or any other  person.
However,  the Committee may offset the  obligations  to the  Participant  or the
Participant's  Beneficiary  hereunder by any amounts the Participant owes to the
Participating Employers,  provided that such amounts owed by the Participant are
not  related  in any way to the  benefits  payable  under this Plan and were not
incurred in  anticipation  of the benefits to which the  Participant  may become
entitled hereunder.

      Sec. 8.3 Incompetency  Every person  receiving or claiming  benefits under
this Plan shall be conclusively presumed to be mentally competent until the date
on which the Committee receives a written notice in a form and manner acceptable
to  the  Committee  that  such  person  is  incompetent  and  that  a  guardian,
conservator  or other person  legally  vested with the care of his or her estate
has been appointed. In such event, the Committee may direct payments of benefits
to such guardian,

                                      -12-



<PAGE>


conservator or other person legally vested with the care of the person's  estate
and any such payments so made shall be a complete discharge of the Participating
Employers to the extent so made.

     Sec.  8.4  Notices.  Notices  required  by  this  Plan to be  given  to the
Committee or a  Participant  shall be in writing and shall be considered to have
been duly  given or  served if  personally  delivered,  or sent by first  class,
certified or registered mail.

     Sec. 8.5 Severability.  The invalidity or partial invalidity of any portion
of this Plan shall not  invalidate  the remainder  thereof,  and said  remainder
shall remain in full force and effect.

     Sec.  8.6  Headings.  Headings at the  beginning  of articles  and sections
hereof are for  convenience of reference,  shall not be considered a part of the
text of the Plan, and shall not influence its construction.

     Sec. 8.7 Capitalized Definitions.  Capitalized terms used in the Plan shall
have their meaning as defined in the Plan unless the context  clearly  indicates
to the contrary.

     Sec.  8.8  Gender.  Any  references  to the  masculine  gender  include the
feminine and vice versa.

     Sec.  8.9  Use of  Compounds  of Word  "Here".  Use of the  words  "hereof,
"herein",  "hereunder",  or similar  compounds of the word "here" shall mean and
refer to the entire Plan unless the context clearly indicates to the contrary.

     Sec.  8.10  Construed  as a Whole.  The  provision's  of the Plan  shall be
construed  as a whole in such manner as to carry out the  provisions  hereof and
shall not be construed separately without relation to the context.

      IN WITNESS  VVHEREOF,  the  Company has caused this Plan to be executed by
its duly authorized officer this 3rd day of August, 1998.


                                                NEW CENTURY ENERGIES, INC.

                                                By:  /s/ Bill D. Helton
                                                -----------------------
                                                Its Chief Executive Officer


                                      -13-

WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>                           UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION EXTRACTED FROM NEW CENTURY
ENERGIES,   INC.  CONSOLIDATED  BALANCE  SHEET  AS  OF  DECEMBER  31,  1998  AND
CONSOLIDATED STATEMENTS OF INCOME AND CASH FLOWS FOR THE YEAR ENDED DECEMBER 31,
1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                               1,000
       
<S>                                 <C>
<PERIOD-TYPE>                               YEAR
<FISCAL-YEAR-END>                    DEC-31-1998
<PERIOD-END>                         DEC-31-1998
<BOOK-VALUE>                            PER-BOOK
<TOTAL-NET-UTILITY-PLANT>              5,882,023
<OTHER-PROPERTY-AND-INVEST>              405,436
<TOTAL-CURRENT-ASSETS>                   802,557
<TOTAL-DEFERRED-CHARGES>                 581,948
<OTHER-ASSETS>                                 0
<TOTAL-ASSETS>                         7,671,964
<COMMON>                                 114,491
<CAPITAL-SURPLUS-PAID-IN>              1,751,895
<RETAINED-EARNINGS>                      740,677
<TOTAL-COMMON-STOCKHOLDERS-EQ>         2,614,827
                    294,000
                                    0
<LONG-TERM-DEBT-NET>                   2,169,954
<SHORT-TERM-NOTES>                        36,438
<LONG-TERM-NOTES-PAYABLE>                      0
<COMMERCIAL-PAPER-OBLIGATIONS>           487,956
<LONG-TERM-DEBT-CURRENT-PORT>            134,005
                      0
<CAPITAL-LEASE-OBLIGATIONS>               35,591
<LEASES-CURRENT>                           4,160
<OTHER-ITEMS-CAPITAL-AND-LIAB>         1,895,033
<TOT-CAPITALIZATION-AND-LIAB>          7,671,964
<GROSS-OPERATING-REVENUE>              3,610,905
<INCOME-TAX-EXPENSE>                     135,596
<OTHER-OPERATING-EXPENSES>             2,960,404
<TOTAL-OPERATING-EXPENSES>             2,960,404
<OPERATING-INCOME-LOSS>                  650,501
<OTHER-INCOME-NET>                        31,851
<INCOME-BEFORE-INTEREST-EXPEN>           682,352
<TOTAL-INTEREST-EXPENSE>                 199,467
<NET-INCOME>                             341,957
                5,332
<EARNINGS-AVAILABLE-FOR-COMM>                  0
<COMMON-STOCK-DIVIDENDS>                 260,330
<TOTAL-INTEREST-ON-BONDS>                185,745
<CASH-FLOW-OPERATIONS>                   659,539
<EPS-PRIMARY>                               3.06
<EPS-DILUTED>                               3.05
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>                          UT
<LEGEND>
THIS SCHEDULE  CONTAINS  SUMMARY  FINANCIAL  INFORMATION  EXTRACTED  FROM PUBLIC
SERVICE COMPANY OF COLORADO AND  SUBSIDIARIES  CONSOLIDATED  BALANCE SHEET AS OF
DECEMBER 31, 1998 AND  CONSOLIDATED  STATEMENTS OF INCOME AND CASH FLOWS FOR THE
YEAR ENDED  DECEMBER  31, 1998 AND IS  QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                             1,000
       
<S>                                <C>
<PERIOD-TYPE>                             YEAR
<FISCAL-YEAR-END>                  DEC-31-1998
<PERIOD-END>                       DEC-31-1998
<BOOK-VALUE>                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>            4,054,389
<OTHER-PROPERTY-AND-INVEST>            215,284
<TOTAL-CURRENT-ASSETS>                 543,674
<TOTAL-DEFERRED-CHARGES>               364,289
<OTHER-ASSETS>                               0
<TOTAL-ASSETS>                       5,177,636
<COMMON>                                     0
<CAPITAL-SURPLUS-PAID-IN>            1,302,119
<RETAINED-EARNINGS>                    325,213
<TOTAL-COMMON-STOCKHOLDERS-EQ>       1,627,332
                  194,000
                                  0
<LONG-TERM-DEBT-NET>                 1,607,604
<SHORT-TERM-NOTES>                           0
<LONG-TERM-NOTES-PAYABLE>                    0
<COMMERCIAL-PAPER-OBLIGATIONS>         402,795
<LONG-TERM-DEBT-CURRENT-PORT>           40,451
                    0
<CAPITAL-LEASE-OBLIGATIONS>             35,526
<LEASES-CURRENT>                         4,030
<OTHER-ITEMS-CAPITAL-AND-LIAB>       1,265,898
<TOT-CAPITALIZATION-AND-LIAB>        5,177,636
<GROSS-OPERATING-REVENUE>            2,284,086
<INCOME-TAX-EXPENSE>                   101,494
<OTHER-OPERATING-EXPENSES>           1,850,574
<TOTAL-OPERATING-EXPENSES>           1,952,068
<OPERATING-INCOME-LOSS>                332,018
<OTHER-INCOME-NET>                       6,399
<INCOME-BEFORE-INTEREST-EXPEN>         338,417
<TOTAL-INTEREST-EXPENSE>               138,314
<NET-INCOME>                           200,103
              5,332
<EARNINGS-AVAILABLE-FOR-COMM>          194,771
<COMMON-STOCK-DIVIDENDS>               188,845
<TOTAL-INTEREST-ON-BONDS>              129,793
<CASH-FLOW-OPERATIONS>                 421,218
<EPS-PRIMARY>                            0.000
<EPS-DILUTED>                            0.000
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>                          UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SOUTHWESTERN
PUBLIC SERVICE  COMPANY  BALANCE SHEET AS OF DECEMBER 31, 1998 AND STATEMENTS OF
INCOME AND CASH FLOWS FOR THE YEAR ENDED  DECEMBER  31, 1998 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                             1,000
       
<S>                                <C>
<PERIOD-TYPE>                             YEAR
<FISCAL-YEAR-END>                  DEC-31-1998
<PERIOD-END>                       DEC-31-1998
<BOOK-VALUE>                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>            1,729,339
<OTHER-PROPERTY-AND-INVEST>            124,627
<TOTAL-CURRENT-ASSETS>                 117,537
<TOTAL-DEFERRED-CHARGES>               158,361
<OTHER-ASSETS>                               0
<TOTAL-ASSETS>                       2,129,864
<COMMON>                                     0
<CAPITAL-SURPLUS-PAID-IN>              348,402
<RETAINED-EARNINGS>                    389,818
<TOTAL-COMMON-STOCKHOLDERS-EQ>         738,220
                  100,000
                                  0
<LONG-TERM-DEBT-NET>                   530,618
<SHORT-TERM-NOTES>                       9,000
<LONG-TERM-NOTES-PAYABLE>                    0
<COMMERCIAL-PAPER-OBLIGATIONS>          85,162
<LONG-TERM-DEBT-CURRENT-PORT>           90,113
                    0
<CAPITAL-LEASE-OBLIGATIONS>                  0
<LEASES-CURRENT>                             0
<OTHER-ITEMS-CAPITAL-AND-LIAB>         576,751
<TOT-CAPITALIZATION-AND-LIAB>        2,129,864
<GROSS-OPERATING-REVENUE>              951,187
<INCOME-TAX-EXPENSE>                    65,696
<OTHER-OPERATING-EXPENSES>             719,812
<TOTAL-OPERATING-EXPENSES>             785,508
<OPERATING-INCOME-LOSS>                165,679
<OTHER-INCOME-NET>                       7,611
<INCOME-BEFORE-INTEREST-EXPEN>         173,290
<TOTAL-INTEREST-EXPENSE>                58,303
<NET-INCOME>                           114,987
                  0
<EARNINGS-AVAILABLE-FOR-COMM>          114,987
<COMMON-STOCK-DIVIDENDS>                75,157
<TOTAL-INTEREST-ON-BONDS>               54,321
<CASH-FLOW-OPERATIONS>                 258,449
<EPS-PRIMARY>                            0.000
<EPS-DILUTED>                            0.000
        

</TABLE>


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