UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON D.C.  20549
                         SCHEDULE 14A INFORMATION

               Proxy Statement Pursuant to Section 14(a) of the
                     Securities Exchange Act of 1934
                            (Amendment No.  )

Filed by the Registrant     [X]
Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ] Preliminary Proxy Statement
[ [ Confidential, for Use of the Commission Only (as permitted by Rule
     14a-6(e)(2))
[X] Definitive Proxy Statement
[ ] Definitive Additional Materials
[ ] Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12

                         UNISOURCE ENERGY CORPORATION
- -------------------------------------------------------------------------------
               (Name of the Registrant as Specified in its Charter)

- -------------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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                    UNISOURCE ENERGY CORPORATION

                      One South Church Avenue
                       Tucson, Arizona 85701

                          March 30, 2001


James S. Pignatelli                                 (520) 571-4000
Chairman of the Board


Dear Shareholders:

      You  are  cordially invited to attend the  UniSource  Energy
Corporation 2001 Annual Shareholders Meeting to be held on Friday,
May  11,  2001, at the Presidio Plaza Hotel, soon to be a Radisson
Hotel, 181 West Broadway, Tucson, Arizona. The meeting will  begin
promptly  at  10:00  a.m., so please plan to  arrive  earlier.  No
admission tickets will be required for attendance at the meeting.

     Directors and officers will be available before and after the
meeting to speak with you. During the meeting, we will answer your
questions regarding our business affairs and we will consider  the
matters explained in the enclosed Notice and Proxy Statement.

      We  have  enclosed a proxy card that lists all matters  that
require your vote. Please vote, sign and return the proxy card  as
soon  as  possible, whether or not you plan to attend the meeting.
You  may  also vote by telephone or the Internet, as explained  on
the  proxy  card. If you attend the meeting and wish to vote  your
shares  personally, you may revoke your proxy at that  time.  Your
interest and continued support of UniSource Energy Corporation are
much appreciated.

                                   Sincerely,

                                   UNISOURCE ENERGY CORPORATION

                                   /s/ James S. Pignatelli

                                   James S. Pignatelli
                                   Chairman of the Board,
                                   President and
                                   Chief Executive Officer



               NOTICE OF ANNUAL SHAREHOLDERS MEETING



TO THE HOLDERS OF COMMON STOCK OF
UNISOURCE ENERGY CORPORATION

     We will  hold the Annual Shareholders Meeting ("Meeting")  of
UniSource Energy Corporation ("UniSource Energy") at the  Presidio
Plaza  Hotel,  soon  to be a Radisson Hotel,  181  West  Broadway,
Tucson,  Arizona, on Friday, May 11, 2001, at 10:00 a.m., Mountain
Standard Time. The Meeting's purpose is to:

     1. elect 11 directors for the Board for the ensuing year; and
     2. consider any other matters  which properly come before the
         Meeting.

     Only shareholders  of record of common stock at the close  of
business on March 14, 2001 are entitled to vote at the Meeting.

     We have enclosed our 2000 Annual Report, including financial
statements,  and  the  Proxy Statement  with  this  notice.  Proxy
soliciting  material is first being sent or given to  shareholders
on  March 30, 2001. Your proxy is being solicited by the UniSource
Energy Board of Directors.

     Please vote,  sign, date and mail the enclosed proxy as  soon
as  possible in the enclosed return envelope. You may also vote by
telephone  or  the  Internet, as explained on the  enclosed  proxy
card.

                                   /s/ Vincent Nitido, Jr.

                                   Vincent Nitido, Jr.
                                   Corporate Secretary


Dated: March 30, 2001


                      YOUR VOTE IS IMPORTANT

EACH  SHAREHOLDER  IS  URGED TO COMPLETE, SIGN,  DATE  AND  RETURN
PROMPTLY  THE  ENCLOSED PROXY BY MAIL, OR TO VOTE BY TELEPHONE  OR
THE  INTERNET, AS EXPLAINED ON THE PROXY CARD. IF THE MAIL  OPTION
IS  SELECTED,  USE THE ENCLOSED ENVELOPE, WHICH DOES  NOT  REQUIRE
POSTAGE  IF MAILED IN THE UNITED STATES. RETURNING A SIGNED  PROXY
WILL  NOT  PROHIBIT YOU FROM ATTENDING THE MEETING AND  VOTING  IN
PERSON IF YOU SO DESIRE.





                    UNISOURCE ENERGY CORPORATION

                       One South Church Avenue
                        Tucson, Arizona 85701

                     ANNUAL SHAREHOLDERS MEETING
                           PROXY STATEMENT

Annual Meeting    May 11, 2001         Presidio Plaza Hotel
                  10:00 a.m., MST      (soon to be a Radisson Hotel)
                                       181 West Broadway
                                       Tucson, Arizona  85701

RECORD DATE       March 14, 2001.   If you  were  a  shareholder  of
                  record  at  the close of  business  on  March  14,
                  2001,  you  may  vote  at the Annual  Shareholders
                  Meeting  ("Meeting").  Each share is  entitled  to
                  one  vote. In the election  of directors, you  may
                  cumulate votes. At the close  of business  on  the
                  record  date,  we  had 33,266,505  shares  of  our
                  common stock outstanding.

AGENDA            1. Proposal One: Elect 11  directors for the Board
                     for the ensuing year.

                  2. Consider any  other matters which properly come
                     before the Meeting and any adjournments.

INDEPENDENT       Representatives   of  PricewaterhouseCoopers,  LLP
AUDITORS          are  expected  to be present  at the Meeting  with
                  the  opportunity to  make a statement and  respond
                  to appropriate questions.

PROXIES           A  form of  proxy for execution by shareholders is
We will follow    enclosed.  Unless you tell  us on the  proxy  card
your voting       to   vote   differently,  we  will   vote   signed
instructions.     returned proxies  "for" the Board's nominees.  The
If none, we       Board  or proxy holders  will use their discretion
will vote         on  other  matters.  If a nominee cannot  or  will
signed proxies    not  serve  as  a  director,  the   Board  or  the
"for" the         persons  designated as  proxies will  vote  for  a
nominees.         person  whom  they  believe   will  carry  on  our
                  present policies.

PROXIES           The Board of Directors ("Board").
SOLICITED BY

FIRST MAILING     We  anticipate  first mailing this Proxy Statement
DATE              on March 30, 2001.

REVOKING YOUR     You  may revoke  your proxy before it is voted  at
PROXY             the  Meeting.  To  revoke, follow  the  procedures
                  listed on page 3 under "Voting Procedures/Revoking
                  Your Proxy."

COMMENTS          Your  comments  about any aspects of our  business
We welcome        are  welcome.  You may use the space  provided  on
your comments.    the  proxy  card  for this  purpose,  if  desired.
The proxy card    Although  we  may  not  respond on  an  individual
has room for      basis,  your  comments  help us  to  measure  your
them.             satisfaction,  and  we   may  benefit  from   your
                  suggestions.

                  PLEASE VOTE - YOUR VOTE IS IMPORTANT
   Prompt return of your proxy will help reduce the costs of re-
                           solicitation.



                             CONTENTS

Voting Procedures/Revoking Your Proxy.................................2
UniSource Energy Share Ownership......................................3
Proposal One: Election of Directors*..................................7
Board Information.....................................................9
Board Compensation...................................................10
Executive Compensation and Other Information**.......................10
Officer Change in Control Agreements ................................14
Transactions with Management and Others..............................15
Compensation Committee Interlocks and Insider Participation..........15
Compensation Committee Report on Executive Compensation..............16
Audit Committee Report...............................................19
Performance Graph**..................................................20
Submission of Shareholder Proposals..................................20
Other Business.......................................................21
- ---------------
*  We expect to vote on this item at the Meeting.
** The Compensation Committee report and the performance graph will
   not be  incorporated  by  reference into any  present  or future
   filings  we make with  the Securities  and  Exchange  Commission
   ("SEC"),  even if  those  reports incorporate all or any part of
   this Proxy Statement.


                VOTING PROCEDURES/REVOKING YOUR PROXY

You can vote    You  can  vote your  shares by telephone, the  Internet,
by telephone,   mail  or  in  person  at the Meeting.  Your  proxy  card
the Internet,   contains  instructions for voting  by telephone  or  the
mail or in      Internet,  which  are the  least expensive  and  fastest
person. We      methods  of voting. To vote by  mail, complete and  sign
encourage       your  proxy  card,  or your broker's voting  instruction
you to vote     card  if  your  shares  are held  by  your  broker,  and
by telephone    return it in the enclosed return envelope.
or the
Internet to     Under  Arizona  law, a  majority of the shares  entitled
help us         to  vote  on  any  single  matter which may  be  brought
save money.     before  the Meeting will  constitute a quorum.  Business
                may  be  conducted once a  quorum is represented at  the
                Meeting.  Except as  otherwise specified by  law  or  in
                our  Articles of Incorporation or Bylaws,  if  a  quorum
                exists,  action on a matter  other than the election  of
                directors will be  deemed approved if the votes cast  in
                favor of the matter exceed votes cast against it.

                Directors are elected  by a plurality of the votes  cast
                by  the shares entitled  to vote if a quorum is present.
                A  plurality  means  receiving  the  largest  number  of
                votes,  regardless   of  whether  that  is  a  majority.
                Withheld votes will be  counted as being represented  at
                the  Meeting  for quorum purposes but will not  have  an
                effect on the vote.

You may         In  the election of  directors, each of our common stock
cumulate        shareholders  has  the right to cumulate  his  votes  by
your votes      casting  as  many votes  in the aggregate equal  to  the
for             number of his shares of  common stock multiplied by  the
directors.      number  of directors to be elected.  He may cast all  of
                such  votes  for one  nominee or distribute  such  votes
                among two or more nominees.

You can         Any  shareholder giving  a proxy has a right  to  revoke
revoke your     that proxy  by  giving  notice to  UniSource  Energy  in
proxy after     writing  directed  to the Corporate Secretary, UniSource
sending         Energy  Corporation,  One South   Church  Avenue,  Suite
it in by        1820,  Tucson,  Arizona  85701,  or  in  person  at  the
following       Meeting  at  any  time before  the proxy  is  exercised.
these           Those who  fail to return a proxy or fail to attend  the
procedures.     Meeting will not  count towards determining any required
                plurality, majority or quorum.

                The  shares  represented  by an executed proxy  will  be
                voted  for  the  election  of  directors or  withheld in
                accordance with the  specifications  in the proxy. If no
                specification  is made in the proxy,  the proxy  will be
                voted in favor of the nominees as set forth herein.

PROXY           We  will  bear  the  entire cost of the solicitation  of
SOLICITATION    proxies. Solicitations will  be made primarily by  mail.
                Additional  solicitation  of  brokers,  banks,  nominees
                and  institutional  investors may be made pursuant to  a
                special engagement of Corporate Investor Communications,
                Inc.,   at  a   cost  of   approximately   $4,000   plus
                reasonable   out-of-pocket  expenses.  Solicitations may
                also  be  made  by  telephone,  facsimile   or  personal
                interview,   if   necessary,    to   obtain   reasonable
                representation  of  shareholders  at  the  Meeting.  Our
                employees    may   solicit  proxies  for  no  additional
                compensation.   We   will  request   brokers  or   other
                persons holding stock  in their names, or in  the  names
                of their  nominees, to forward  proxy materials  to  the
                beneficial owners of such  stock or  requestl  authority
                for  the execution of the  proxies.  We  will  reimburse
                brokers  and  other  persons  for   reasonable  expenses
                they  incur in sending these  proxy  materials to you if
                you are a beneficial holder of our shares.


                   UNISOURCE ENERGY SHARE OWNERSHIP

SECURITY        The   following  table  sets   forth  the   number   and
OWNERSHIP       percentage  of  shares  beneficially  owned  as  of  the
OF MANAGEMENT   Record  Date and the nature  of such ownership  by  each
                of   our   directors,  nominees,  the   Chief  Executive
                Officer,   the  four   other  most  highly   compensated
                executive  officers  during 2000, and all directors  and
                officers  as  a  group.  Ownership includes  direct  and
                indirect (beneficial)  ownership, as defined by the  SEC
                rules.






                                                                           Allocable Amount of
                                       Amount and                         Shares Under Deferred
               Name and                 Nature of                          Compensation Stock
 Title         Title of                Beneficial         Percent         Plan and Restricted
of Class   Beneficial Owner           Ownership (1)       of Class       Stock Unit Account (2)
- --------   ----------------           -------------       --------       ----------------------
                                                                     
Common     James  S.  Pignatelli      139,416 (3)(4)         *                   116,277
           Chairman, President
           and Chief Executive
           Officer

Common     Ira R. Adler                72,673 (5)(6)         *                    27,323
           Director

Common     Lawrence  J. Aldrich         1,500                *                       -
           Director

Common     Larry W. Bickle              5,201 (7)            *                       -
           Director

Common     Elizabeth T. Bilby           7,101 (8)            *                     2,594
           Director

Common     Harold W. Burlingame         5,701 (7)            *                       -
           Director

Common     Jose L. Canchola             9,001 (8)            *                       412
           Director

Common     John L. Carter              14,758 (9)            *                     3,771
           Director

Common     Daniel W. L. Fessler         4,068 (7)            *                       -
           Director

Common     John A. Jeter               11,410 (8)            *                     2,106
           Director

Common     Martha R. Seger              8,589 (8)            *                     2,157
           Director

Common     H. Wilson Sundt              8,801 (8)(10)        *                     1,863
           Director

Common     Dennis R. Nelson            52,843 (11)(12)       *                    25,237
           Senior Vice President
           and Chief Operating
           Officer, Energy
           Resources (TEP)

Common     Steven J. Glaser            36,570 (13)(14)       *                    27,733
           Senior Vice President
           and Chief Operating
           Officer, Transmission
           and Distribution (TEP)

Common     Michael J. DeConcini        14,101 (15)(16)       *                    23,079
           Senior Vice President,
           Strategic Planning and
           Investments

Common    All directors and           552,135 (17)          1.7%                 321,839
          executive officers as
          a group

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

*   Represents less than  1% of the outstanding common stock of  UniSource
    Energy.

 (1)  Amounts include the following:
      - Any  shares  held  in the name of the  spouse,  minor  children or
        other  relatives  sharing the  home of  the  director, nominee  or
        officer.  Except  as  otherwise  indicated  below, the  directors,
        nominees and  officers have sole  voting and investment power over
        the shares  shown.  Voting power  includes the power to direct the
        voting of the shares held, and investment power includes the power
        to direct the disposition of the shares held.
      - Shares  subject to  options  exercisable  within 60 days, based on
        information from directors and officers.
      - Equivalent  share  amounts  allocated  to the  individuals' 401(k)
        Plan  (formerly the Triple Investment Plan  (401(k))  which, since
        June 1, 1998,  has included a UniSource Energy Stock Fund election
        option.
 (2)  Amounts include the following:
      - Shares held  in trust under  the Deferred Compensation Plan.  With
        the  cash compensation  deferred, the  trust invests  in UniSource
        Energy  common  stock quarterly.  Distributions under the Deferred
        Compensation Plan are made in common stock. Until the common stock
        is  distributed,  directors and  officers are  not  the beneficial
        owners  of such shares.  The number of  shares set  forth includes
        shares purchased through the last quarterly purchase on January 14,
        2001.
      - The  allocable  amount  of deferred  shares  in  the participant's
        Restricted Stock Unit Account (see Summary Compensation Table).
 (3)  Includes  127,992  shares subject to  options  exercisable
      within 60 days.
 (4)  Includes  9,605  shares purchased under  the  401(k)  Plan
      UniSource Energy Stock Fund.
 (5)  Includes  61,867  shares subject  to  options  exercisable
      within 60 days.
 (6)  Includes  5,647  shares purchased under  the  401(k)  Plan
      UniSource Energy Stock Fund.
 (7)  Includes  3,201  shares  subject  to  options  exercisable
      within 60 days.
 (8)  Includes  6,801  shares  subject  to  options  exercisable
      within 60 days.
 (9)  Includes  5,601  shares  subject  to  options  exercisable
      within 60 days.
(10)  Includes 1,000 shares held by a corporation with which Mr.
      Sundt is associated.
(11)  Includes  44,273  shares subject  to  options  exercisable
      within 60 days.
(12)  Includes  7,762  shares purchased under  the  401(k)  Plan
      UniSource Energy Stock Fund.
(13)  Includes  33,387  shares subject  to  options  exercisable
      within 60 days.
(14)  Includes  1,750  shares purchased under  the  401(k)  Plan
      UniSource Energy Stock Fund.
(15)  Includes  9,947  shares  subject  to  options  exercisable
      within 60 days.
(16)  Includes  4,154  shares purchased under  the  401(k)  Plan
      UniSource Energy Stock Fund.
(17)  Includes  461,344  shares subject to  options  exercisable
      within 60 days and 46,296 shares purchased under the 401(k)
      Plan UniSource Energy Stock Fund.





SECURITY        The  following  companies are the beneficial owners  of
OWNERSHIP OF    more  than 5% of the outstanding  shares of our  common
CERTAIN         stock:
BENEFICIAL
OWNERS



                                                       Amount and
                    Name and Address                    Nature of            Percent
Title  of Class    of Beneficial Owner            Beneficial Ownership      of Class
- ---------------    -------------------            --------------------      --------

                                                                     
Common             The Prudential Insurance           2,134,340 (1)(2)        6.58%
                   Company of America
                   751 Broad Street
                   Newark, NJ  07102-3777

Common             T. Rowe Price Associates, Inc.     2,133,700 (3)           6.50%
                   100 E. Pratt Street
                   Baltimore, MD  21202
- ---------------
(1)  In a  statement  dated  January 29, 2001  filed  with  the SEC  on
     Schedule  13G/A  under  the  Securities  Exchange  Act of 1934, as
     amended  ("Exchange  Act"), The Prudential  Insurance  Company  of
     America ("Prudential") indicated it  presently holds 5,100  shares
     of  our  outstanding  common stock for the benefit of its  general
     account.  In  addition,  Prudential may have  direct  or  indirect
     voting and/or investment discretion over  2,129,240 shares of  our
     outstanding common stock, which are  held for its own  benefit  or
     for  the  benefit  of   its  clients  by  its  separate  accounts,
     externally  managed  accounts, registered  investment   companies,
     subsidiaries and/or other affiliates.
(2)  In  a statement  dated  February 14, 2001  filed with the  SEC  on
     Schedule  13G  under the  Exchange Act,  Jennison  Associates  LLC
     ("Jennison")  indicated   that  it  has  sole  voting  and  shared
     dispositive  power over  2,002,540 shares, representing  6.18%  of
     our  outstanding common stock,  which are directly held in managed
     accounts   to  which  Jennison   serves  as  investment   advisor.
     Prudential owns 100%  equity interests of Jennison. As  a  result,
     Prudential  may  be deemed  to have the power to  exercise  or  to
     direct the exercise of such  voting and/or dispositive power  that
     Jennison may have with respect to our common stock.  Jennison  has
     not  filed  its  Schedule 13G  jointly with Prudential,  as  such,
     shares  of  our common  stock reported on Jennison's Schedule  13G
     may  be included in the shares  reported on Schedule 13G filed  by
     Prudential.
(3)  In  a  statement dated  February 13, 2001  filed with the  SEC  on
     Schedule 13G  under  the Exchange  Act, T. Rowe Price  Associates,
     Inc. ("Price Associates")  indicated   it  has  sole  voting power
     over  1,018,400  shares and sole dispositive  power over 2,133,700
     shares of  our outstanding  common  stock.  These  securities  are
     owned  by  various  individual  and  institutional  investors  for
     which  Price  Associates  serves as investment advisor with  power
     to direct investments  and/or sole  power  to vote the  securities
     For purposes  of the  reporting requirements  of the Exchange act,
     Price  Associates  is deemed  to  be  beneficial  owner  of  such
     securities; however, Price Associates  expressly disclaims that it
     is, in fact, the beneficial owner of such securities.



SECTION 16(a)   Section  Section  16(a)  of the  Exchange  Act  and  SEC
BENEFICIAL      regulations  require  directors,  certain  officers  and
OWNERSHIP       persons who  own greater  than  10% of our stock to file
REPORTING       reports of  ownership  and changes in  ownership of such
COMPLIANCE      stock  with  the  SEC  and the New York Stock  Exchange.
                These  directors,  officers   and   greater  than    10%
                beneficial owners are required by law to furnish us with
                copies of all forms they file under Section 16(a).

                Based  solely  on a  review of the copies of  such forms
                furnished  to us and on  written representations of  our
                directors and officers, we believe that all Section 16(a)
                filing  requirements  applicable  to  our  directors and
                officers were complied with during 2000.



                  PROPOSAL 1: ELECTION OF DIRECTORS

GENERAL         At  the  Meeting,  the shareholders  will  elect  eleven
We will         directors  to  serve on our Board for the  ensuing  year
elect 11        and  until  their successors are elected and  qualified.
directors       The  shares represented by executed proxies in the  form
this year.      enclosed, unless withheld, will be voted for the  eleven
                nominees  listed  below, or, in the  discretion  of  the
                persons  acting  as proxies, will be voted  cumulatively
                for  one  or  more of such nominees. All of the  current
                nominees  are present members of the Board. All  of  the
                nominees  have  consented to serve if  elected.  If  any
                nominee  becomes unavailable for any reason or a vacancy
                should  occur  before the election, it is the  intention
                of  the persons designated as proxies to vote, in  their
                discretion, for other nominees.

BOARD NOMINEES
James S.        Chairman of the Board of Directors,  President and Chief
Pignatelli      Executive Officer of  UniSource Energy since July  1998;
                Senior  Vice President and  Chief Operating  Officer  of
                UniSource  Energy  from  December  1997  to  July  1998;
                Chairman of the  Board of Directors, President and Chief
                Executive  Officer  of  Tucson  Electric  Power  Company
                ("TEP"), a wholly owned  subsidiary of UniSource Energy,
                since  July  1998; Executive  Vice President  and  Chief
                Operating Officer  of TEP from March 1998 to July  1998;
                Senior  Vice President and  Chief Operating  Officer  of
                TEP  from   1996  to  1998;  Senior  Vice  President  of
                Business  Development of TEP from 1994 to 1996; Chairman
                of   the  Board  of  Directors,  President   and   Chief
                Executive  Officer of  Millennium Energy Holdings,  Inc.
                ("Millennium"), a wholly  owned subsidiary of  UniSource
                Energy,  since   1997;  President  and  Chief  Executive
                Officer of Mission  Energy Company, a subsidiary of  SCE
                Corp.   from   1988   to  1993;   Director   of   INNCOM
                International, Inc. Age 57.

Ira R. Adler    Director of UniSource  Energy since July 1998; President
                and  CEO  of  Global Energy Solutions, Inc.  and  Global
                Solar  Energy, Inc.  since October 2000; Executive  Vice
                President,  Chief  Financial Officer  and  Treasurer  of
                UniSource  Energy  from  July 1998  to  September  2000;
                Executive  Vice  President  of TEP from  March  1998  to
                September  2000; Chief Financial  Officer  of  TEP  from
                July  1990 to September  2000; Senior Vice President  of
                TEP  from  1990  to 1998;  Director of Millennium  since
                1998;  Vice  President  and Chief Financial  Officer  of
                Millennium from April 1998 to November 1998. Age 50.

Lawrence J.     Principal,  Aldrich Capital Company,  a venture  capital
Aldrich         company,  since  February  2000;  President  and   Chief
(1)(4)          Executive  Officer  of  Tucson Newspapers  from  January
                1992  to  February 2000;  Director of TEP and Millennium
                since 2000. Board member since 2000. Age 48.

Larry W.        Managing  Director  of  Haddington  Ventures,  LLC,   an
Bickle          investment  company,  since  1997;  Chairman  and  Chief
(2)(3)(4)       Executive  Officer of TPC  Corporation  (formerly  Tejas
                Power Corporation)  from 1982 to May 1997; Director, St.
                Mary Land & Exploration Company;  Director, Western  Hub
                Properties;  Director  of Millennium since  1998.  Board
                member since 1998. Age 55.

Elizabeth T.    President and Treasurer  of Gourmet Products,  Inc.,  an
Bilby           agricultural  product  marketing  company;  Director  of
(1)(2)(3)(4)    Marketing  of Green Valley Pecans  since 1982.  Director
                of  TEP since 1995;  Director of Millennium since  1998.
                Board member since 1995. Age 61.

Harold W.       Executive  Vice   President,  Communications   &   Human
Burlingame      Resources  of AT&T  Wireless Services since April  2000;
(1)(2)(3)       Executive  Vice  President,  Merger  &   Joint   Venture
                Integration  of  AT&T  from March 1999  to  March  2000;
                Executive  Vice  President  of Human Resources  of  AT&T
                from 1987 to March 1999; Member  of the AT&T Foundation;
                Director  of  TEP since 1998.  Board member since  1998.
                Age 60.

Jose L.         Chairman   of   Canchola   Group,  holder   of   several
Canchola        restaurant  franchises in  Tucson and Nogales,  Arizona,
(3)(4)          since  1976; Member of McDonald's  Corporation Operators
                Advisory  Board  from 1981 to 1993;  National  Franchise
                Director,  U.S.  Department   of  Commerce,  Office   of
                Minority   Business  Enterprise   from  1974  to   1976;
                Director  of Millennium since 1998.  Board member  since
                1992. Age 69.

John L.         Executive Vice President and  Chief Financial Officer of
Carter          Burr-Brown Corporation from 1993 to 1996;  President and
(2)(4)          Chief  Executive  Officer of Qualtronics  Manufacturing,
                Inc.  from  1987 to 1996;  Director of TEP  since  1996;
                Director  of Millennium since 1998.  Board member  since
                1996. Age 66.

Daniel W.L.     Partner  in  the  law  firm of LeBoeuf, Lamb,  Greene  &
Fessler         MacRae   L.L.P.  since  1997;   Member  of  the  Harvard
(1)(4)          Electricity  Policy  Group  since 1993;  Member  of  the
                American  Law Institute since 1985;  Professor  of  Law,
                University  of  California,  Davis from  1970  to  1995;
                President of the  California Public Utilities Commission
                from  1991  to  1996;  Commissioner  of  the  California
                Transportation  Commission from  1991 to 1995;  Director
                of TEP since 1998. Board member since 1998. Age 59.

Martha R.       Consultant, Martha R. Seger  and Associates Economic and
Seger           Financial Consulting;  John M. Olin Distinguished Fellow
(1)(2)(4)       at  the  Karl  Eller Center  for the  Study  of  Private
                Market  Economy at the University  of Arizona from  1991
                to  1993;  Financial  Economist   and  Governor  of  the
                Federal  Reserve  System from 1984 to 1991; Director  of
                Xerox  Corporation, Kroger  Company, Fluor  Corporation,
                and Amerisure; Director of TEP since 1992.  Board member
                since 1992. Age 69.

H. Wilson       Retired  Chairman  of  the Board,  The  Sundt  Companies
Sundt           Inc.; Chairman of the Board and  Chief Executive Officer
(2)(3)          of Sundt Corp, a general  construction contracting firm,
                from  1979 to December 1998,  having served as President
                from  1979  to  1983;  Director of Magma Copper  Company
                from   October  1987  to  January  1996;   Director   of
                Millennium since 1998.  Board member since 1976. Age 68.
- ---------------
(1)  Member of the Nominating Committee.  Mr. Aldrich was elected to
     this Committee effective May 12, 2000.
(2)  Member  of  the  Audit Committee.   Ms. Bilby  served  on  this
     Committee through May 11, 2000.
(3)  Member of the Compensation Committee.
(4)  Member of the Finance Committee. Mr. Aldrich was elected to
     this Committee effective May 12, 2000. Ms. Bilby served on this
     Committee through May 11, 2000.

             THE BOARD RECOMMENDS THAT YOU VOTE "FOR" THESE NOMINEES.

                                   BOARD INFORMATION

BOARD           In 2000, the Board held a total of six regular  meetings
MEETINGS        and  one  special  meeting.  Each  director  attended at
                least 75% of his or her Board and committee meetings.

BOARD           The  AUDIT  COMMITTEE  selects  and  recommends  to  the
COMMITTEES      Board a firm of independent certified public accountants
                to audit annually our financial statements;  reviews and
                discusses the scope of such audit;  receives and reviews
                the audit  reports and  recommendations;  transmits  its
                recommendations to the Board; reviews our accounting and
                internal  control  procedures  with  our  internal audit
                department from  time to time  and makes recommendations
                to the  Board for  any changes  deemed necessary in such
                procedures; and  performs such other functions delegated
                by  the Board.  Our  Audit committee  held four meetings
                in 2000  and was in  full  compliance  with its  written
                charter. See appendix attached  hereto  for  a  copy  of
                the UniSource Energy Corporation Audit Committee  of the
                Board of Directors Charter.

                The  COMPENSATON COMMITTEE  reviews the  performance  of
                our  directors  and officers and  makes  recommendations
                to  the Board  with respect  to directors' and officers'
                compensation.  Our  Compensation  Committee  held  three
                meetings in 2000.

                The  FINANCE COMMITTEE  reviews and  recommends  to  the
                Board long-range  financial policies  and objectives and
                actions   required    to  achieve   those    objectives.
                Specifically,  the  Finance  Committee  reviews  capital
                and operating budgets, current  and  projected financial
                results   of  operations,  short-term   and   long-range
                financing   plans,  dividend   policy,  risk  management
                activities  and   major commercial  banking,  investment
                banking,  financial   consulting  and   other  financial
                relations  of  UniSource Energy.  Our Finance  Committee
                held four meetings in 2000.

                The    NOMINATING   COMMITTEE    interviews    potential
                directors,   nominates   and   recommends     to     the
                shareholders  and   directors,  as   the  case  may  be,
                qualified   persons    to  serve  as    directors.   The
                Nominating Committee held one meeting in 2000.   At such
                times  as  director  vacancies  occur,  the   Nominating
                Committee  will  consider  written recommendations  from
                shareholders   for   the  Board.    The   deadline   for
                consideration   of   recommendations  for  next   year's
                Annual  Meeting  of  Shareholders is November 30,  2001.
                Recommendations   must  include   detailed  biographical
                material  indicating  the candidate's qualifications and
                a  written  statement from the  candidate of willingness
                and  availability to  serve.  Recommendations should  be
                directed to the  Corporate Secretary,  UniSource  Energy
                Corporation,  One  South  Church  Avenue,  Suite   1820,
                Tucson, Arizona 85701.

                                 BOARD COMPENSATION

RETAINER        In 2000,  each non-employee director  received a $24,000
AND FEES        annual  cash  retainer,  $1,000  for each Board  meeting
                attended,  $1,000  for each committee  meeting  attended
                and  an  additional  $500  if  acting   as  a  committee
                chairperson.  We  reimburse directors  for any  expenses
                related to their Board service.

OPTION          Non-employee   directors   also  receive    options   to
GRANTS          purchase  2,000  shares of our  common stock  when  they
                become directors and another  2,000  for each year  they
                serve  as  director  thereafter.  The exercise price  of
                the options is  the fair market  value of our shares  on
                the  grant date.  These are grants of  UniSource  Energy
                common  stock  options under the  1994 Outside  Director
                Stock  Option Plan which  vest in  one-third  increments
                on the grant date  anniversary and  expire in ten years.
                This  year,  with the exception  of Mr. Aldrich, options
                were  granted  to each of the directors  on  January  3,
                2000, at an exercise price of $11.00.




                    DIRECTOR COMPENSATION FOR LAST FISCAL YEAR

                                 Cash Compensation               Security Grants
                                 -----------------               ---------------

                                                                        Number of
                                                            Number     Securities
                     Annual Retainer                          of        Underlying
Name (1)               Fee ($) (2)    Meeting Fees ($)(2)   Shares  Options/SARs (3)
- --------             ---------------  -------------------   ------  ----------------

                                                             
Lawrence J. Aldrich       18,000            13,000             -         2,000 (4)
Larry W. Bickle           24,000            31,000             -         2,000
Elizabeth T. Bilby        24,000            29,000             -         2,000
Harold W. Burlingame      24,000            25,000             -         2,000
Jose L. Canchola          24,000            28,000             -         2,000
John L. Carter            24,000            32,000             -         2,000
Daniel W. L. Fessler      24,000            25,000             -         2,000
John A. Jeter             24,000            30,000             -         2,000
R.B. O'Rielly             10,000            14,500             -         2,000
Martha R. Seger           24,000            26,000             -         2,000
H. Wilson Sundt           24,000            21,500             -         2,000
- ---------------
(1)  Mr. Pignatelli and  Mr. Adler are not  listed in the above  table
     because directors who are officers of UniSource Energy or salaried
     employees of its subsidiaries do not receive compensation in their
     capacity  as  members  of  the  Board.  Refer  to   the  Summary
     Compensation Table for information concerning their conpensation.
(2)  Cash  compensation  includes amounts earned but deferred  at  the
     election of directors.
(3)  Grants  of UniSource Energy common  stock options under  the 1994
     Outside Director Stock Option Plan.
(4)  Mr. Aldrich was granted shares on May 12, 2000, the date on which
     he became a director, at an exercise price of $15.50.



                     EXECUTIVE COMPENSATION AND OTHER INFORMATION

SUMMARY OF      The  following  table summarizes  the  compensation  and
COMPENSATION    stock   option   grants  to   and  stock   options/stock
                appreciation  rights   ("SARs")   held  by   our   Chief
                Executive  Officer   and  our  four  other  most  highly
                compensated  executive  officers at  December  31,  2000
                ("Named Executives").




                                      SUMMARY COMPENSATION TABLE

                                                                    Long Term
                                   Annual Compensation         Compensation Awards
                                   -------------------         -------------------

                                                         Restricted     Securities
                                                           Stock        Underlying  All Other
     Name and                                             Awards        Options/   Compensation
Principal Position       Year   Salary ($)   Bonus ($)    ($)(1)        SARs (#)      ($)(2)
- ------------------       ----   ----------   ---------   ----------    ----------- ------------

                                                                   
James S. Pignatelli      2000    528,462      440,000          -         100,000      7,650
President and                                                             75,000 (3)
Chief Executive          1999    450,008      272,800     1,200,005      114,500      7,200
Officer                  1998    410,050      216,004          -          58,246      7,200

Ira R. Adler             2000    314,423      110,000          -          51,000      7,650
President and                                                             75,000 (3)
Chief Executive          1999    299,988      135,000       225,010       31,800      7,200
Officer (Global          1998    297,614      125,995          -          17,700      7,200
Energy Solutions, Inc.)

Dennis R. Nelson         2000    244,423      112,000          -          40,000      7,650
Senior Vice President    1999    214,769       67,500       225,010       18,200      7,200
and Chief Operating      1998    206,693       72,000          -           8,800      7,200
Officer, Energy
Resources (TEP)

Steven J. Glaser         2000    204,519      115,000          -          40,000      7,650
Senior Vice President    1999    180,000       64,800       283,760       11,450      7,200
and Chief Operating      1998    186,174       54,000          -           8,000      7,200
Officer, Transmission
and Distribution (TEP)

Michael J. DeConcini     2000    159,616      100,000          -          20,000      7,650
Senior Vice President,                                                    20,000 (3)
Strategic Planning and   1999    139,785       35,000       275,319        8,900      7,200
Investments              1998    127,319       37,800          -           4,000      7,080

- ---------------
(1)  Award amount represents  the fair market value  of the  restricted
     stock units on the grant date. The restrictions on the 1999 grants
     lapse  50%  on  the  third  anniversary  and 50%   on  the  fourth
     anniversary of the award date.  Recipients are entitled to receive
     shares of stock after the restrictions have lapsed, but  may elect
     to defer receipt of such stock to a future period.  The restricted
     stock units are not entitled to dividends. As of December 31, 2000,
     based on the closing market price of  UniSource  Energy's stock on
     that date  of $18.8125 , Mr. Pignatelli  held  100,524  restricted
     stock units valued at $1,891,108; Mr. Adler held 18,849 restricted
     stock units valued at $354,597; Mr. Nelson held 18,849  restricted
     stock units valued at $354,597 ; Mr. Glaser held 23,849 restricted
     stock units valued at $448,659 ;  and Mr.  DeConcini  held  23,079
     restricted stock units valued at $434,174
(2)  All  Other  Compensation   is  comprised   of  UniSource  Energy's
     contributions to the 401(k) Plan.
(3)  Options granted to Mr. Pignatelli,  Mr. Adler and Mr. DeConcini in
     the common stock of Global Energy Solutions, Inc. ("GES"),  Global
     Solar  Energy, Inc. ("GSE") and  Infinite  Power  Solutions,  Inc.
     ("IPS") pursuant to each company's Stock Incentive Plan. Exercising
     options in any one of these companies reduces the  relative number
     of options  available  for exercise  in the  other  two companies.
     UniSource Energy owns 67% of  GES.  GSE  and IPS  are wholly-owned
     subsidiaries of GES.



STOCK OPTIONS   During 2000,  the Compensation  Committee of  our  Board
GRANTS IN       granted stock options intended to be non-qualified stock
2000            options under the  Internal  Revenue  Code of  1986,  as
                amended, to  officers and  managers.  The  options  have
                exercise  prices equal to the fair  market value  of the
                common stock  at the  date of grant.  The  options  vest
                ratably over a  three-year period.  The aggregate number
                of shares  attributable  to the  2000 grants is  464,000
                (UNS) and 190,000 (GES, GSE and IPS).

                The following table  includes  our 2000  grants of stock
                options  and SARs to the  Named Executives.  The amounts
                shown as potential realizable values rely on arbitrarily
                assumed  increases in  value  required  by the SEC.   In
                assessing those amounts,  please note  that the ultimate
                value of  the options, as well as the shares, depends on
                actual future  share prices.   Market conditions and the
                efforts  of  the directors, the  officers and  others to
                foster the future  success of  UniSource Energy  and its
                subsidiaries can influence those future share values.





                                  OPTION/SAR GRANTS IN LAST FISCAL YEAR
                                            Individual Grants

                                                                                   Potential
                                      Percent of                               Realizable Value at
                      Number of    Total Options/                             Assumed Annual Rates
                     Securities          SARs                                   of Stock Price
                     Underlying       Granted to     Exercise                 Appreciation for
                     Options/SARs     Employees       Price      Expiration       Option Term
Name                  Granted (#)  in Fiscal Year     ($/Sh)       Date       5% ($)       10% ($)
- ----                 ------------  --------------   --------     ----------   ------       -------

                                                                     
James S. Pignatelli     100,000         21.6%        15.2813      08/03/10    961,033      2,435,446
                         75,000 (1)     39.5% (2)     3.2500 (3)  08/03/10    153,293 (4)    388,475 (4)

Ira R. Adler             51,000         11.0%        15.2813      08/03/10    490,127      1,242,077
                         75,000 (1)     39.5% (2)     3.2500 (3)  10/01/10    153,293 (4)    388,475 (4)

Dennis R. Nelson         40,000          8.6%        15.2813      08/03/10    384,413        974,178

Steven J. Glaser         40,000          8.6%        15.2813      08/03/10    384,413        974,178

Michael J. DeConcini     20,000          4.3%        15.2813      08/03/10    192,207        487,089
                         20,000 (1)     10.5% (2)     3.2500 (3)  08/03/10     40,878 (4)    103,593 (4)
- ---------------
(1)  Options granted to Mr. Pignatelli, Mr. Adler and Mr. Deconcini in
     GES, GSE and IPS pursuant to each company's Stock Incentive Plan.
     Exercising options  in any  one of  the  companies  reduces  the
     relative  number of  options available  for exercise in the other
     two companies.
(2)  The percentage of GES, GSE and IPS  options granted  to employees
     is based  on the total number of GES, GSE and IPS options granted
     exclusively to UniSource Energy officers and directors.
(3)  The GES  exercise  price is  the  total of  the GSE and  the  IPS
     exercise prices, which are $2.00 and $1.25 respectively.
(4)  Due to the start-up nature of the operations of GES, GSE and IPS,
     and the fact there is no readily  available market  price for the
     common stock of  GES,  GSE and  IPS, these  calculations assume a
     market  price equal  to the  GES exercise price of  $3.25  at the
     grant date.



2000 OPTION     The following  table  includes the  number and value  of
AND SAR         exercisable and non-exercisable options and SARs held by
HOLDINGS        the Named Executives as of December 31, 2000.




                                 AGGREGATED OPTION/SAR EXERCISES IN
                       LAST FISCAL YEAR AND FISCAL YEAR-END OPTION/SAR VALUES


                                              Number of Securities
                                                   Underlying
                                                   Unexercised       Value of Unexercised
                       Shares                    Options/SARs at         In-the-Money
                      Acquired                 Fiscal Year-End (#)  Options/SARs at Fiscal
                    on Exercise     Value          Exercisable/    Year End ($) Exercisable/
      Name               (#)      Realized ($)    Unexercisable          Unexercisable
      ----          -----------   ------------    -------------    -------------------------

                                                             
James S. Pignatelli      -            -           123,214/195,748        557,785/915,043
                                                         0/75,000 (1)                0/0 (2)

Ira R. Adler             -            -             61,867/78,100        264,200/337,836
                                                         0/75,000 (1)                0/0 (2)

Dennis R.Nelson          -            -             39,913/55,066        176,984/230,098

Steven J. Glaser         -            -             30,844/50,299        129,361/199,834

Michael J. DeConcini     -            -              9,947/27,266         52,014/113,743
                                                         0/20,000 (1)                0/0 (2)
- ---------------
(1)  Options granted to Mr. Pignatelli, Mr. Adler  and Mr. Deconcini in
     the common stock of  GES, GSE  and  IPS pursuant to each company's
     Stock  Incentive  Plan.   Exercising options  in any  one of these
     companies  reduces  the relative  number  of options available for
     exercise in the other two companies.
(2)  GES, GSE and IPS  options were not in the money as of December 31,
     2000.  Options  are  in the  money  if the  market  value  of  the
     underlying stock exceeds the exercise price of the option.




PENSION PLANS   The following table shows the estimated annual retirement
                benefit  payable  to participants,  including  the  Named
                Executives,  for the average annual earnings and years of
                service  indicated.   Remuneration  is comprised  of  the
                officers'  average annual compensation  during  the  five
                consecutive   years   of   employment  with  the  highest
                compensation within the last 15 years preceding retirement.
                Compensation is comprised of salary and bonus, as shown on
                the Summary Compensation Table.



                                          PENSION PLAN TABLE

                                           Years of Service
                        --------------------------------------------------------

  Remuneration ($)        10        15        20        25        30        35
  ----------------        --        --        --        --        --        --
                                                       
  125,000               54,850    54,850    54,850    54,850    54,850    54,850
  150,000               65,820    65,820    65,820    65,820    65,820    65,820
  175,000               76,790    76,790    76,790    76,790    76,790    76,790
  200,000               87,760    87,760    87,760    87,760    87,760    87,760
  225,000               98,730    98,730    98,730    98,730    98,730    98,730
  250,000              109,700   109,700   109,700   109,700   109,700   109,700
  300,000              131,640   131,640   131,640   131,640   131,640   131,640
  400,000              175,520   175,520   175,520   175,520   175,520   175,520
  450,000              197,460   197,460   197,460   197,460   197,460   197,460
  500,000              219,400   219,400   219,400   219,400   219,400   219,400
  550,000              241,340   241,340   241,340   241,340   241,340   241,340
  600,000              263,280   263,280   263,280   263,380   263,280   263,280
  650,000              285,220   285,220   285,220   285,220   285,220   285,220
  700,000              307,160   307,160   307,160   307,160   307,160   307,160
  750,000              329,100   329,100   329,100   329,100   329,100   329,100
  800,000              351,040   351,040   351,040   351,040   351,040   351,040
  850,000              372,980   372,980   372,980   372,980   372,980   372,980
  900,000              394,920   394,920   394,920   394,920   394,920   394,920
  950,000              416,860   416,860   416,860   416,860   416,860   416,860
1,000,000              438,800   438,800   438,800   438,800   438,800   438,800



                The amount of the  pension benefit  is equal to a base of
                40% of the compensation for 25 years of service, plus 9.7%
                of such calculated amount.  The estimated benefits shown in
                the Pension  Plan  Table  are straight life annuities not
                subject to a reduction for any  Social Security Benefits.
                The table also  reflects amounts payable under the Excess
                Benefits Plan  which will  pay from the  general funds of
                UniSource   Energy  the difference, if  any,  between the
                benefits under TEP's pension plan and any benefit payments,
                which may be limited by federal income tax regulations.

                The credited years of service for UniSource Energy's Named
                Executives are as follows.

                                                      Credited
                           Name                   Years of Service
                           ----                   ----------------

                           James S. Pignatelli            6
                           Ira R. Adler                  15
                           Dennis R. Nelson              23
                           Steven J. Glaser              11
                           Michael J. DeConcini          12

                  OFFICER CHANGE IN CONTROL AGREEMENTS

Change in         TEP  has  Change  in Control Agreements ("Agreements")
Control           with all of its officers. The Agreements are in effect
Agreements        until  the  latter of: (i) five years after  the  date
were adopted      either  TEP  or  the officer gives  written notice  of
to attract and    termination of the Agreement  or (ii) if a  change  in
retain quality    control occurs during the term of the Agreement,  five
management.       years after the change of control. For the purpose  of
                  the  Agreements,  a  change in  control  includes  the
                  acquisition  of beneficial ownership  of  30%  of  the
                  common  stock of UniSource Energy, certain changes  in
                  the  UniSource Energy Board of Directors, approval  by
                  the shareholders of certain mergers or consolidations,
                  or  certain  transfers  of  the  assets  of  UniSource
                  Energy. The Agreements provide that each officer shall
                  be  employed  by  TEP  or one of its  subsidiaries  or
                  affiliates  in a position comparable to their  current
                  position, with compensation and benefits which are  at
                  least  equal  to  their then current compensation  and
                  benefits, for an employment period of five years after
                  a  change  in  control (subject to earlier termination
                  due  to  the  officer's acceptance of a position  with
                  another company or termination for cause).

                  Following a change in control, in the event  that  the
                  officer's  employment is terminated by TEP  (with  the
                  exception   of   termination  due  to  the   officer's
                  acceptance  of another position or for cause),  or  if
                  the  officer  terminates his employment because  of  a
                  reduction in position, responsibility, salary  or  for
                  certain  other stated reasons, the officer is entitled
                  to  severance benefits in the form of: (i) a lump  sum
                  payment equal to the present value of three times  his
                  salary and bonus compensation; (ii) the present  value
                  of  the additional amount he would have received under
                  the  TEP  Retirement Plan if he had  continued  to  be
                  employed  for the five-year period after a  change  in
                  control  occurs; and  (iii) the present value  of  any
                  employee  awards  under  the 1994  Omnibus  Stock  and
                  Incentive  Plan  or  any  successor  plan,  which  are
                  outstanding  at the time of the officer's  termination
                  (whether  vested or not), prorated based on length  of
                  service. Such officer is also entitled to continue  to
                  participate   in  TEP's  health, death and  disability
                  benefit  plans for five years  after  the termination.
                  The Agreements  further provide  that  TEP will make a
                  payment to  the officer  to  offset  any excise  taxes
                  that  may  become payable  under  certain  conditions.
                  Any  payments made  in  respect  of  such excise taxes
                  are not  deductible.  Assuming  a  change  in  control
                  occurred on the  Record  Date which  resulted  in  the
                  immediate  termination of the  Chief Executive Officer
                  and  the  other Named Executives,  the  total payments
                  made by UniSource Energy  pursuant  to  the Agreements
                  would  not  be  expected  to  exceed $15.7 million.

                  TRANSACTIONS WITH MANAGEMENT AND OTHERS

TUCSON            Millennium   Energy  Holdings,   Inc., a subsidiary of
COMMUNITY         UniSource  Energy,   has  made  a  $5 million  capital
VENTURES L.L.C.   commitment  to  Tucson Community Ventures,  L.L.C.,  a
                  venture  capital  fund.  Mr. Aldrich, a  member of our
                  Board, owns the company that manages the fund.

          COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

LEBOEUF, LAMB     The law firm  of LeBoeuf, Lamb, Greene & MacRae L.L.P.
GREENE &          has  provided  certain  legal services  to  UniSource
MACRAE L.L.P.     Energy.  Mr. Fessler,  a member  of  our  Compensation
                  Committee,  is  an  equity owner  of  that  firm.  The
                  arrangements with that firm are competitive with those
                  of other law firms serving us.

HADDINGTON        Millennium  Energy  Holdings, Inc.,  a  subsidiary  of
ENERGY            UniSource Energy, has been  authorized by its Board of
PARTNERS          Directors to invest $15 million, in aggregate,  over a
II L.P.           three-  to  five-year  period  in   Haddington  Energy
                  Partners  II  L.P.   Mr.  Bickle,   a  member  of  our
                  Compensation  Committee,  is the  managing director of
                  Haddington  Ventures  L.L.C.,  the  general partner of
                  Haddington Energy Partners II L.P.



          COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION

THE COMMITTEE     The   Compensation   Committee   of  the   Board  (the
                  "Compensation Committee") is responsible for developing
                  and administering  executive compensation policies and
                  programs  for  UniSource  Energy  and  TEP and  making
                  recommendations to the  Board with respect thereto. In
                  2000,  the Compensation  Committee  was  comprised  of
                  six independent  outside  directors.  The Compensation
                  Committee  determines  the  compensation of  UniSource
                  Energy's  executive officers, including Mr. Pignatelli
                  and the other  Named Executives, and sets policies for
                  and reviews  the  compensation  awarded to  other  key
                  members  of  management.  UniSource  Energy  applies a
                  consistent   philosophy   to   compensation  for   all
                  executive employees, including the Named Executives.

OVERALL           UniSource Energy's executive compensation policies and
OBJECTIVES        programs   generally  are  intended  to   relate   the
                  compensation of employees to the success of  UniSource
                  Energy  and  the corresponding creation of shareholder
                  value  to attract, retain and motivate executives  and
                  key    employees    with   competitive    compensation
                  opportunities.

EXECUTIVE         We  review  executives'  pay each  year.  Compensation
COMPENSATION      depends   on   many   factors,  including   individual
GENERALLY         performance  responsibilities, future  challenges  and
                  objectives  and the executive's potential contribution
                  to  our  future  success. We also  look  at  UniSource
                  Energy's  financial performance and  the  compensation
                  levels at comparable companies.

                  UniSource Energy's 2000 compensation program consisted
                  of three components:

                     -  base salary;
                     -  short-term incentive compensation; and
                     -  long-term incentive compensation.

BASE SALARY       The  base salary component of compensation is intended
                  to   be  competitive  with  that  paid  by  comparable
                  companies  in  the energy industry. In developing  the
                  compensation   program,  the  Compensation   Committee
                  retained   an   external  consultant  to   conduct   a
                  competitive  analysis  of pay for  UniSource  Energy's
                  officer  group. In conducting its analysis  for  2000,
                  the  consultant  used two comparator  groups:  (i)  an
                  energy   group  consisting  of  12  gas  and  electric
                  utilities with revenues from $.6 to $4.6 billion;  and
                  (ii)  a  group of 27 public  companies  in  the energy
                  industry, for utility specific jobs and a mixed  group
                  of energy and general industry  for  jobs not specific
                  to the  utility industry,  with  revenues  from $.5 to
                  $3.1  billion.   The  Compensation  Committee believes
                  the  companies  in  the  comparator  groups are a more
                  appropriate comparison for  UniSource  Energy than the
                  Edison Electric 100  companies used in the Performance
                  Graph  on  page 20,  because  the type of business and
                  annual  revenues  of  the  companies  included  in the
                  survey   are   more   closely   related  to  those  of
                  UniSource Energy and the companies  in  the comparator
                  groups  represent  primary  competitors  to  UniSource
                  Energy for top-level management personnel. The external
                  data  from  companies in  the  comparator  groups  was
                  used  to   develop  a  market  compensation  for  each
                  executive  position.  "Market  compensation" refers to
                  the  median salary  for executives  in  the comparator
                  groups.   Base   salaries   for   UniSource   Energy's
                  executive officers, including  Mr. Pignatelli  and the
                  other Named Executives, were set at market compensation
                  levels   in  January  2000,   in  recognition  of  the
                  increasingly  competitive environment  in the electric
                  industry  and the  need  to  continue  to  attract and
                  retain highly qualified executives and  the  fact that
                  a substantial  portion  of  each   executive's   total
                  compensation  package  is  "at-risk,"  based  on   the
                  achievement of certain corporate goals. See Short-Term
                  Incentive   Compensation   and   Long-Term   Incentive
                  Compensation below.

SHORT-TERM        The  Board  adopted  a Short-Term  Incentive  Plan  to
INCENTIVE         provide   compensation   for  meeting   or   exceeding
COMPENSATION      specified  objectives designed to  contribute  to  the
                  attainment  of UniSource Energy's long-term  strategic
                  plan.  Under  the  Short-Term Incentive  Plan,  target
                  award   levels  are  set  as  a  percentage  of   each
                  participant's  base salary.  In 2000, the target award
                  levels for our executive  officers ranged from 30%-60%
                  of  base salary.  Awards  for  Mr. Pignatelli  and the
                  remaining  executive  officers  are  determined by the
                  Board  based  on  the  accomplishment   of  previously
                  established  individual  goals  and   contribution  to
                  business results. Based  on the foregoing factors, the
                  Compensation   Committee   made  awards  to  executive
                  officers of the Company  ranging from  30%  to 80%  of
                  base salary.   Incentive  compensation  awarded to Mr.
                  Pignatelli and the other Named Executives is set forth
                  in the preceding Summary Compensation Table.

LONG-TERM         UniSource Energy's long-term incentive compensation is
INCENTIVE         intended to attract and retain quality employees  over
COMPENSATION      the  long  term in a manner that directly aligns  them
                  with shareholder interests.

                  At  the  recommendation of the Compensation Committee,
                  the  Board  of  Directors  unanimously adopted, and at
                  the   1994   Annual   Meeting  of  Shareholders,   the
                  shareholders   approved  the  Tucson  Electric   Power
                  Company  1994  Omnibus  Stock and  Incentive  Plan. On
                  August 3, 2000, the  Compensation Committee issued non-
                  qualified  stock  options ("NQSOs") to  all  executive
                  officers  of UniSource Energy including Mr. Pignatelli
                  and  the  other  Named Executives. In calculating  the
                  level  of awards to the other executive officers,  the
                  Compensation  Committee considered the above  analysis
                  of  executive compensation for comparative  companies.
                  Based  on  such  analysis, the Compensation  Committee
                  awarded Mr. Pignatelli NQSOs with a total value  equal
                  to  125%  of his base salary. The total value of stock
                  options issued to  the other  Named Executives  ranged
                  from 75% to 140% of  base salary. The number of shares
                  covered by the stock option  grant  to  Mr. Pignatelli
                  was  100,000 (UNS) and 75,000 (GES, GSE and IPS).  The
                  Compensation Committee did not consider the number  of
                  options previously granted or outstanding.

                  In  2000, the Compensation Committee issued awards  of
                  restricted  stock  units  to  two  executive  officers.
                  Restricted stock units represent the  right to receive
                  UniSource Energy  stock following  the expiration of a
                  stated period  of time and  were  issued to retain key
                  management   personnel.    Executives   who   received
                  restricted  stock  awards  in  2000  are  entitled  to
                  receive one-half of the awarded stock on March 6, 2003
                  and  the  remaining  half on  March 6,  2004, provided
                  they are then still  employed  by  UniSource Energy or
                  its subsidiaries.

TAX CODE          The  Compensation Committee does not presently have  a
CONCERNS          policy  regarding  qualifying  compensation  paid   to
                  executive  officers  for deductibility  under  Section
                  162(m)  of  the  Internal Revenue  Code  of  1986,  as
                  amended.

CONCLUSION        We  believe Mr. Pignatelli and his executive team have
                  provided  outstanding service to UniSource Energy.  We
                  will   work   to  assure  the  executive  compensation
                  programs continue to meet our strategic goals as  well
                  as the overall objectives discussed above.

                                    Respectfully submitted,

                                    THE COMPENSATION COMMITTEE

                                    H. Wilson Sundt, Chair
                                    Larry W. Bickle
                                    Elizabeth T. Bilby
                                    Harold W. Burlingame
                                    Jose L. Canchola
                                    John A. Jeter



                                AUDIT COMMITTEE REPORT

THE COMMITTEE     The  Audit  Committee  is  made  up  of  non-employee,
                  financially  literate,  directors who are independent,
                  as defined in the applicable  New  York Stock Exchange
                  listing  standards.  Several   members  of  the  Audit
                  Committee  have   accounting  or   related   financial
                  management expertise.  The Board  previously adopted a
                  written  charter for the Audit Committee.  On July 14,
                  2000, the Board approved amendments to the charter. The
                  Audit Committee Charter is included as an appendix  to
                  this Proxy Statement.  The Committee has complied with
                  its  charter   including   the  requirement   to  meet
                  periodically  with   UniSource   Energy's  independent
                  auditors,  our  Internal  Audit Department,   and  our
                  management  to   discuss   the auditors'  findings and
                  other financial and accounting matters.

                  In  connection with  our  December 31, 2000  financial
                  statements,  the Audit  Committee has (i) reviewed and
                  discussed  the   audited  financial  statements   with
                  management; (ii) discussed with PricewaterhouseCoopers,
                  LLP, our independent auditor,  the matters required to
                  be  discussed by SAS 61 (Codification of Statements on
                  Auditing Standards,  AU Sec. 380); (iii) received from
                  PricewaterhouseCoopers, LLP  the  written  disclosures
                  and  the  letter  required  by  Independence Standards
                  Board Standard  No. 1 (Independence  Discussions  with
                  Audit    Committees);   and   iv)  discussed      with
                  PricewaterhouseCoopers, LLP its independence.

                  The   following   table    details    fees    paid  to
                  PricewaterhouseCoopers, LLP for  professional services
                  during  the  year  2000.   The   Audit  Committee  has
                  considered whether the provision  of services to us by
                  PricewaterhouseCoopers, LLP, beyond those  rendered in
                  connection with their audit and review of our financial
                  statements,   is compatible   with   maintaining their
                  independence as auditors.

                                   Financial Information
                                   System Design and              All
                    Audit Fees     Implementation Fees        Other Fees
                    ----------     -------------------        ----------
                     $322,847               -                   $234,060

                  Based  on  all of its activities during the year,  the
                  Audit  Committee  recommended  to  the Board  that the
                  financial   statements  for  2000  be included  in the
                  Annual  Report  on  Form  10-K  for  filing  with  the
                  Securities and Exchange Commission.

                                     Respectfully submitted,

                                     THE AUDIT COMMITTEE

                                     John A. Jeter, Chair
                                     Larry W. Bickle
                                     Harold W. Burlingame
                                     John L. Carter
                                     Martha R. Seger
                                     H. Wilson Sundt




                            PERFORMANCE GRAPH
           Comparison of Cumulative Three-Year Total Return Among
               UniSource Energy, Standard & Poor's 500 Index
             and EEI Index of 100 Investor-Owned Utilities (1)

The graph showing on the hard copy represents the comparison of three year
cumulative total return between  UniSource Energy Corporation, the S&P 500
Index, and EEI Index of 100  investor-owned utilities.  The graph's X-axis
shows the years 1997 to 2000, and the  Y-axis shows  dollar values from 50
to 200. The data points are connected by lines with the following markers:
UniSource Energy - triangles;  S&P 500 Index - diamonds;  EEI Index of 100
investor-owned utilities - squares.  The datapoints are as follows:





                          1997       1998       1999       2000
                          ----       ----       ----       ----

                                               
UniSource Energy
Corporation               $100       $74        $62        $106

S&P 500 Index             $100      $129       $156        $141

EEI Index of 100
Investor-owned
Utilities                 $100      $114        $93        $137

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

(1)  Assumes $100 invested on December 31, 1997  in UniSource Energy
     common stock, S&P Index and EEI Index.   It is assumed that all
     dividends are reinvested in stock at the frequency paid and the
     returns  of  each  component  peer  group issuer  are  weighted
     according  to the issuer's  stock  market capitalization at the
     beginning of the period.

     Data and Calculations              1998       1999      2000
     ---------------------              ----       ----      ----

     S & P 500 Total Return Change     28.58%     21.04%    -9.10%
     EEI Index - 100 Electrics         13.89%    -18.60%    47.97%
     UniSource Energy Change          -25.52%    -17.13%    71.80%




                        SUBMISSION OF SHAREHOLDER PROPOSALS

GENERAL           Rule 14a-4  of the SEC's  proxy rules allows us to use
                  discretionary  voting  authority  to vote  on a matter
                  coming  before an annual  meeting of the shareholders,
                  which  was not included in our  Proxy Statement (if we
                  do  not have  notice  of the  matter  at least 45 days
                  before  the  date  on which  we first mailed our proxy
                  materials for the prior year's  annual meeting  of the
                  shareholders).    In  addition,  we   may   also   use
                  discretionary  voting  authority  if we receive timely
                  notice of such matter  (as described  in the preceding
                  sentence) and if, in the  Proxy Statement, we describe
                  the nature of such matter and how we intend to exercise
                  our discretion to vote on it. Accordingly, for our 2002
                  Annual Meeting of Shareholders, any such notice must be
                  submitted  to  the  Corporate  Secretary  of  UniSource
                  Energy on or before February 13, 2002.

We must           This requirement  is separate and apart from the SEC's
receive your      requirements that a shareholder  must meet in order to
shareholder       have  a  shareholder  proposal included  in our  Proxy
proposals by      Statement.   Shareholder  proposals   intended  to  be
November 30,      presented at our  2002  Annual Meeting of Shareholders
2001.             must be received by us no later than November 30, 2001
                  in order  to  be  eligible  for inclusion in our Proxy
                  Statement  and  the  form of  proxy  relating  to that
                  meeting.  Direct any  proposals,  as  well  as related
                  questions, to the undersigned.

                                  OTHER BUSINESS

                  The Board knows of no other  matters for consideration
                  at the Meeting.  If any other business should properly
                  arise, the persons appointed in the enclosed proxy have
                  discretionary  authority  to  vote  in accordance with
                  their best judgment.

                  Additional copies of our  2000  Annual  Report on form
                  10-K  may be obtained by shareholders, without charge,
                  upon written  request to  Library and Resource Center,
                  UniSource Energy Corporation, 3950 East Irvington Road,
                  Mail Stop RC114, P.O. Box 711,  Tucson, Arizona 85702.
                  You   may  also  obtain our   SEC filings through the
                  Internet at www.sec.gov.


                                      By order of the Board of Directors.

                                      /s/ Vincent Nitido, Jr.
                                      Vincent Nitido, Jr.
                                      Corporate Secretary

                         PLEASE VOTE - YOUR VOTE IS IMPORTANT



                                                              APPENDIX

                                                              Amended
                                                              July 14, 2000

                            UNISOURCE ENERGY CORPORATION
                            ----------------------------

                   AUDIT COMMITTEE OF THE BOARD OF DIRECTORS
                   -----------------------------------------

                                     CHARTER
                                     -------


 1.  COMPOSITION
     -----------

     The Audit Committee of the  Board  of  Directors  (the "Committee")
     consists of  not less  than  five non-employee  Directors appointed
     annually by the Board.   No Director who  accepts any  compensation
     other  than  fees  for  Board service  and no  Director  who is not
     completely independent  of management  and the Corporation shall be
     appointed.  The Board  shall designate one of the Committee members
     as Chairman of  the Committee.   Each member of the Committee shall
     be financially  literate,  and one  member shall have accounting or
     financial management expertise.

 2.  MEETINGS
     --------

     The Committee  will hold  at least four regular meetings each year,
     and such additional  meetings as  it may deem necessary. Additional
     meetings  will be called  by the  Chairman of  the  Committee.  The
     agendas for the  regular meetings shall include all items necessary
     to complete  the duties  of the Committee  as set forth herein.  In
     addition to the  Committee members  and the Secretary, the Chairman
     of the  Board,  Chief  Executive  Officer  and  President and other
     members of management,  internal audit  and representatives  of the
     independent auditors may attend as appropriate.

 3.  RULES OF PROCEDURE
     ------------------

     The Committee will determine its own rules of procedure with respect
     to how its meetings are to be called, as well as the place and time.

 4.  COMPENSATION
     ------------

     Each member will be paid such fees  as may be established from time
     to time  by the  Board for service  on the  Committee,  and will be
     reimbursed  for travel expenses incurred by attendance at meetings.

 5.  COMMITTEE SECRETARY
     -------------------

     The  Secretary  of  the  Committee will be the  Assistant Corporate
     Secretary   of   the  Company   (or such   other  representative of
     management as the  Committee may designate)  and not be a member of
     the Committee.  The Secretary will attend all meetings and maintain
     minutes,  advise  members of all meetings  called, arrange with the
     Chairman   or   other   convening  authority  for  preparation  and
     distribution  of the agenda  for each meeting,  and carry out other
     functions  as may be assigned  from time to time  by the Committee.
     At such meetings  where attendance  by a  Company representative is
     not appropriate,  the  Chairman  shall  act  as  secretary  of  the
     meeting  or  appoint  another  member  of the  Committee  to act as
     secretary of such meetings.

 6.  QUORUM
     ------

     A majority of the total membership of the Committee will constitute
     a quorum.

 7.  RESPONSIBILITIES
     ----------------

     The Committee  is to assist the Board in discharging its duties and
     responsibilities  regarding  financial  accounting,  reporting  and
     internal  controls.  To ensure  independence  and  assure  adequate
     consideration  of  audit  recommendations  the  Corporate   General
     Auditor reports directly to the Chairman of the Committee.

 8.  SPECIFIC DUTIES OF THE COMMITTEE
     --------------------------------

     a) Select  and evaluate  a firm for recommendation to the Board for
        the Board  to engage as the  Company's  independent auditor and,
        where appropriate, to replace such firm.

     b) Review  the  independent  auditor's  compensation,  the proposed
        terms of its engagement, and its independence.

     c) Ensure  that the  auditors  understand  that they are ultimately
        accountable  to the  Board  of  Directors and  the Committee, as
        representatives of the stockholders.

     d) Annually   receive   a   written  statement  from  the  auditors
        delineating all relationships between the auditor and the Company.

     e) Review the  appointment,  replacement, reassignment or dismissal
        of the Company's General Auditor.

     f) Review and approve the internal audit department charter.

     g) Serve  as a  channel  of  communication  between the independent
        auditor and the Board and between the  Company's General Auditor
        and the  Board  to maintain  the best  allocation  of  available
        resources.

     h) Review  the  results  of each  independent  audit, including any
        qualifications in the independent auditor's opinion, any related
        management letter, management's response to recommendations made
        by the independent auditor in connection with the audit, reports
        submitted  to the  Committee  by the  internal  and  independent
        auditors  that are  material to the  Company  as  a  whole,  and
        management's response to those reports.

     i) Review  the  Company's  annual   financial  statements  and  any
        significant  disputes  between  management  and  the independent
        auditor that  arose in  connection with the preparation of those
        financial  statements.  (The  Committee does  not review interim
        financial  reports   before  they  are  published,  because  our
        independent  auditors  review  such  reports  and  issue written
        reports  on their reviews,  and because of the tight preparation
        and distribution schedule of such reports.)

     j) Discuss  with  the independent auditor the quality (not just the
        acceptability) of the Company's application of Generally Accepted
        Accounting  Principles  (GAAP),  including  a discussion of such
        issues as the clarity of the financial disclosures and the degree
        of aggressiveness or conservatism of the Company's application of
        GAAP.

     k) Review  management  and  General Auditor reports on the adequacy
        of the Company's  internal controls established by management to
        provide,  among  other  things,  reasonable  assurance  that the
        Company's  publicly reported  financial statements are presented
        fairly in conformity with GAAP.

     l) Consider  major  changes  and  other  major  questions of choice
        proposed  by  management  regarding  the  appropriate   auditing
        practices  to be  followed by the Company's internal audit staff
        and  accounting  principles  and practices  to be  followed when
        preparing the Company's financial statements.

     m) Review  the  procedures  employed  by the  Company  in preparing
        published   financial   statements   and   related    management
        commentaries.

     n) Meet periodically  with management to review the Company's major
        financial  risk exposure,  and the measures taken to reduce such
        risk.

     o) Annually  review  the   Company  policy  on a  Corporate Code of
        Conduct and compliance therewith.

     p) Annually   review  this  Audit  Committee  Charter  and make any
        necessary changes.

     q) Annually review  travel and  entertainment  expenses of officers
        and  directors.  Include   in  this   review  a  discussion   of
        perquisites.

     r) Annually  perform  an evaluation  of the Committee, its members,
        functions and performance.

 9.  EXECUTIVE SESSION
     -----------------

     At all  meetings of the  Committee, sufficient opportunity shall be
     made available  for the internal  and independent  auditors to meet
     with the Committee members  in executive session without management
     present.

10.  RESPONSIBILITIES OF THE CHAIRMAN
     --------------------------------

     The  Chairman   of  the  Committee   will  present  the  Committee's
     recommendations  to  the   Board  for its  approval and periodically
     provide the Board, for its information, with a summary of the
     Committee's determinations and approvals.

11.  RESPONSIBILITIES OF THE CHIEF EXECUTIVE OFFICER
     -----------------------------------------------

     The  Chief  Executive  Officer  of the  Company will advise and make
     recommendations to  the Committee and,  in the normal course, attend
     all meetings of the Committee.

12.  OTHER AUTHORITY
     ---------------

     The  Committee  may call  upon any person including employees of the
     Company  or its subsidiaries,  knowledgeable in matters discussed by
     the Committee,  for information  and counsel, provided, however, the
     Committee shall not retain  independent counsel  or advisors without
     the consent of the Board.


                                                             APPENDIX B
                                                     FORM OF PROXY CARD


                                UNISOURCE ENERGY

                              Two New Ways to Vote

                         VOTE BY INTERNET OR TELEPHONE

                         24 Hours a Day - 7 Days a Week
                            It's Fast and Convenient


INTERNET
- --------
http://proxy.shareholder.com/uns


- --  Go to the website address listed above.

- --  Have your proxy card ready.

- --  Enter your Control Number located in the box below.

- --  Follow the simple instructions on the website.

                         OR


TELEPHONE
- ---------
1-800-574-7048


- --  Use any touch-tone telephone.

- --  Have your proxy card ready.

- --  Enter your Control Number located in the box below.

- --  Follow the simple recorded instructions.

                         OR


MAIL
- ----

- --  Mark, sign and date your proxy card.

- --  Detach your proxy card.

- --  Return your proxy card in the postage-paid envelope provided.



Your Internet or telephone vote authorizes the named proxies to vote your
shares in the same manner as if you marked, signed and returned your proxy
card.  If you have submitted your proxy by the Internet or telephone there is
no need for you to mail back your proxy card.

                                                1-800-574-7048
                                                CALL TOLL-FREE TO VOTE

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

                                                       CONTROL NUMBER
                                                FOR INTERNET/TELEPHONE VOTING
                                                -----------------------------

THE INTERNET AND TELEPHONE VOTING FACILITIES WILL BE AVAILABLE UNTIL 5:00 P.M.
E.S.T. ON MAY 10, 2001.



  DETACH PROXY CARD HERE IF YOU ARE NOT VOTING BY THE INTERNET OR TELEPHONE
- -------------------------------------------------------------------------------

                         (FORM OF PROXY CARD - FRONT)


The Board of Directors Recommends a Vote FOR the following proposal:

1. Election of Directors

FOR all nominees      WITHHOLD AUTHORITY to vote      *EXCEPTIONS   [ ]
listed below          for all nominees listed
[ ]                   below  [ ]

Nominees: 01-Ira R. Adler,  02-Lawrence J. Aldrich,  03-Larry W. Bickle,
          04-Elizabeth T.Bilby, 05-Harold W. Burlingame, 06-Jose L. Canchola,
          07-John L. Carter, 08-Daniel W. L. Fessler, 09-James S. Pignatelli,
          10-Martha R. Seger, 11-H. Wilson Sundt

(INSTRUCTIONS: To withhold authority to vote for any individual nominee, mark
the  "Exceptions"  box and write that nominee's name  in  the space provided
below).


*Exceptions -------------------------------------------------------------------

                                                  If you agree to access
                                                  our Annual Report and Proxy
                                                  Statement electronically in
                                                  the future, please mark this
                                                  box.  [ ]



                                                  Change of Address and
                                                  or Comments Mark Here   [ ]


                                        PLEASE  SIGN  EXACTLY AS NAME APPEARS
                                        HEREON. When shares are held by joint
                                        tenants  in common   or  as community
                                        property, both should sign.  When
                                        signing as attorney, executor,
                                        administrator, trustee, guardian or
                                        custodian, please give full title as
                                        such. If a corporation, please sign in
                                        corporate name by President or other
                                        authorized officer. If a partnership,
                                        please sign in partnership name by
                                        authorized person.  Receipt is hereby
                                        acknowledged  of  Notice  of  Annual
                                        Meeting, Proxy Statement and the 2000
                                        Annual Report.

                                        Dated:                          2001
                                              ------------------------,

                                        ------------------------------------
                                                  Signature

                                        ------------------------------------
                                                  Signature


                                        Votes MUST be indicated
                                        (x) in Black or Blue ink. [X]


Please Sign, Date and Return the Proxy
Promptly Using the Enclosed Envelope.

- -------------------------------------------------------------------------------
PLEASE DETACH HERE
You Must Detach This Portion of the Proxy Card
Before Returning it in the Enclosed Envelope
- -------------------------------------------------------------------------------


               The Presidio Plaza Hotel, soon to be a Radisson Hotel,
               is located at 181 West Broadway.  From the freeway,
               head east on Congress.  The hotel is located one and
               a half blocks east of the freeway on the south side of
               Broadway (when heading east, Congress turns into Broadway).


                     [A street map showing the location of
                  the annual shareholders meeting is set forth
                                in this area.]



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

                         (FORM OF PROXY CARD - BACK)


                         UNISOURCE ENERGY CORPORATION

This Proxy is Solicited on Behalf of the Board of Directors of the Company for
                  the Annual Meeting to be held May 11, 2001

                                  P R O X Y

   The undersigned hereby appoints James S. Pignatelli and Kevin P. Larson, and
each of them, with the power of substitution, to represent and to vote on behalf
of the shareholder all shares of Common Stock which the shareholder is entitled
to vote at the Annual Meeting of Shareholders scheduled to be held in the
Presidio Plaza Hotel, soon to be a Radisson Hotel, 181 West Broadway, Tucson,
Arizona, on May 11, 2001, and at any adjournments thereof, with all powers
the shareholder would possess if personally present and particularly with
respect to Item 1 and in their discretion, upon such other business as may
properly come before the meeting. This proxy, when properly executed, will be
voted in the manner directed herein by the shareholder. IF NO DIRECTION IS MADE,
THIS PROXY WILL BE VOTED "FOR" ITEM 1.

                      (Continued, and to be dated and signed on reverse side.)

                                                 UNISOURCE ENERGY CORPORATION
                                                 C/O THE BANK OF NEW YORK
                                                 P.O. BOX 11030
                                                 NEW YORK, N.Y. 10203-0030