UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON D.C.  20549

                               SCHEDULE 14A

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


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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 Sections 240.14a-11(c) or 240.14a-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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    previously.  Identify the previous filing by registration statement number,
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     1)  Amount Previously Paid:
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                          UNISOURCE ENERGY CORPORATION
                            One South Church Avenue
                              Tucson, Arizona 85701


                                  April 6, 2005

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

Dear Shareholders:


         You are cordially  invited  to  attend the UniSource Energy Corporation
2005  Annual Shareholders' Meeting to  be  held  on  Friday, May 6, 2005, at the
Marriott  University  Park  Hotel, 880 East  Second Street, Tucson, Arizona. The
meeting  will  begin  promptly  at 10:00 a.m., Mountain Standard Time, 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
Proxy Statement.

         We  have enclosed a proxy card that lists all matters that require your
vote. Please complete, sign, date  and  mail 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 enclosed proxy card. If you attend the meeting
and wish to vote your shares personally, you may revoke your proxy at that time.

         Your interest in  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  2005  Annual Shareholders'  Meeting  ("Meeting") of
UniSource  Energy  Corporation  at  the Marriott University Park Hotel, 880 East
Second Street, Tucson, Arizona, on May 6, 2005, at 10:00 a.m., Mountain Standard
Time ("MST"). The purpose of the Meeting is to:

1. elect nine directors to our Board of Directors for the ensuing year; and

2. consider any other matters which properly come before the Meeting.

         Only shareholders of record at the close of business on March 28, 2005,
are entitled to vote at the Meeting.

         We  have  enclosed  our 2004 Annual Report, including audited financial
statements, and  the Proxy Statement with this notice. Proxy soliciting material
is  first  being sent or given to  shareholders on or about April 6, 2005.  Your
proxy is being solicited by our Board of Directors.

         Please complete, sign, date and mail the enclosed proxy card as soon as
possible, or vote by telephone or the Internet, as explained on the enclosed
proxy card.

                                         /s/ Catherine A. Nichols
                                         ------------------------
                                         Catherine A. Nichols
                                         Corporate Secretary



Dated: April 6, 2005


                             YOUR VOTE IS IMPORTANT

EACH  SHAREHOLDER IS  URGED  TO  COMPLETE,  SIGN,  DATE  AND RETURN PROMPTLY THE
ENCLOSED  PROXY  CARD  BY zMAIL, OR TO VOTE BY TELEPHONE  OR  THE  INTERNET,  AS
EXPLAINED  ON  THE  ENCLOSED 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 6, 2005                Marriott University Park Hotel
                    10:00 a.m., MST            880 East Second Street
                                               Tucson, Arizona 85719


      Record Date   The record date is March 28, 2005  ("Record Date").   If you
                    were  a  shareholder  of  record at the close of business on
                    the  Record   Date,  you   may   vote  at  the  2005  Annual
                    Shareholders'    Meeting   ("Meeting") of  UniSource  Energy
                    Corporation  ("UniSource  Energy"  as  well as references to
                    "we,"  "our"  and  "us").   At  the close of business on the
                    Record  Date,  we  had  34,547,161  shares  of  common stock
                    outstanding.

           Agenda      1.   Proposal One: Elect  nine  directors  to  our  Board
                            of Directors ("Board") for the ensuing year.

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

      Independent   Representatives of PricewaterhouseCoopers, LLP  are expected
         Auditors   to be  present at the Meeting with the opportunity to make a
                    statement  and  respond   to  appropriate questions from our
                    shareholders.

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

          Proxies
     Solicited by   The Board.

    First Mailing   We anticipate first mailing  this Proxy Statement along with
             Date   the proxy card on or about April 6, 2005.

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

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

                      PLEASE VOTE - YOUR VOTE IS IMPORTANT

   Prompt return of your proxy will help reduce the costs of re-solicitation.

                                       1



                                    CONTENTS

                                                                          
Voting Procedures/Revoking Your Proxy........................................  2

UniSource Energy Share Ownership.............................................  3

Proposal One: Election of Directors*.........................................  6

Board Information............................................................  8

Board Compensation........................................................... 11

Executive Compensation and Other Information**............................... 13

Equity Compensation Plan Information......................................... 15

Officer Change in Control Agreements......................................... 18

Director Independence Criteria............................................... 19

Transactions with Management and Others...................................... 20

Compensation Committee Report on Executive Compensation...................... 21

Audit Committee Report....................................................... 24

Performance Graph**.......................................................... 27

Submission of Shareholder Proposals.......................................... 28

Other Business............................................................... 28

Appendix A.................................................................. A-1

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

*   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 by      You can vote your shares by telephone,  the Internet,  mail
telephone, the       or in person  at the  Meeting.  Your  proxy  card  contains
Internet, mail or    instructions  for  voting  by  telephone  or the  Internet,
in person. We        which  are the  least  expensive  and  fastest  methods  of
encourage you to     voting.  To vote by mail,  complete,  sign  and  date  your
vote by telephone    proxy card, or your  broker's  voting  instruction  card if
or the Internet to   your shares are held by your  broker,  and return it in the
help us save money.  enclosed return envelope.

                     Under  Arizona  law, a majority  of the shares  entitled to
                     vote on any single  matter which may be brought  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.


                                       2



You may cumulate      In the election of  directors,  each  shareholder  has the
your votes for        right to cumulate  his votes by casting a total  number of
directors.            votes  equal to the number of his  shares of common  stock
                      multiplied  by the 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.   For any other
                      matter that may properly  come before  the  Meeting,  each
                      share of common stock will be entitled to one vote.

You can revoke your   Any shareholder  giving a proxy has a right to revoke that
proxy after sending   proxy by giving  notice  to  UniSource  Energy in  writing
it in by following    directed  to the  Corporate  Secretary,  UniSource  Energy
these procedures.     Corporation,  One South Church Avenue,  Suite 200, Tucson,
                      Arizona  85701,  or in person at the  Meeting  at any time
                      before the proxy is exercised.  Those who fail to return a
                      proxy  or  fail to  attend  the  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 an executed  proxy,  the proxy will be voted in
                      favor of the nominees as set forth herein.

 Proxy Solicitation   We  will  bear  the  entire  cost of the  solicitation  of
                      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  DF  King  &  Co.,   Inc.,  at  a  cost  of
                      approximately   $7,500   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  request   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 Ownership   The following  table sets forth the number and  percentage
      of Management   of shares  beneficially  owned as of the  Record  Date and
                      the  nature of such  ownership  by each of  our  directors
                      (all of which are nominees),  our  Chief Executive Officer
                      and  our five  other  most  highly  compensated  executive
                      officers at January 5, 2005 (the "Named  Executives")  and
                      all directors and officers as a group.  Ownership includes
                      direct and indirect (beneficial)  ownership, as defined by
                      the SEC rules.



                                  Name and                              Amount and
             Title                 Title of                         Nature of Beneficial          Percent
           of Class            Beneficial Owner                         Ownership (1)             of Class
           --------            ----------------                     --------------------          --------
                                                                                       
             Common         James S. Pignatelli                            737,547 (2)               2.2%
                            Chairman, President and
                            Chief Executive Officer

             Common         Lawrence J. Aldrich                             11,484 (3)                *
                            Director


                                       3





                                  Name and                              Amount and
             Title                 Title of                         Nature of Beneficial          Percent
           of Class            Beneficial Owner                         Ownership (1)             of Class
           --------            ----------------                     --------------------          --------
                                                                                     
             Common         Larry W. Bickle                                 17,424 (4)                *
                            Director

             Common         Elizabeth T. Bilby                              15,077 (5)                *
                            Director

             Common         Harold W. Burlingame                            13,677 (4)                *
                            Director

             Common         John L. Carter                                  24,231 (6)                *
                            Director

             Common         Robert A. Elliott                                1,610 (7)
                            Director

             Common         Kenneth Handy                                    8,477 (8)                *
                            Director

             Common         Warren Y. Jobe                                   6,885 (8)                *
                            Director

             Common         Steven J. Glaser                               211,371 (9)                *
                            Senior Vice President and
                            Chief Operating Officer, Transmission
                            & Distribution - Tucson Electric
                            Power Company ("TEP")

             Common         Dennis R. Nelson                               195,490 (10)               *
                            Senior Vice President and Chief Operating
                            Officer - UniSource Energy Services, Inc.
                            ("UES")

             Common         Michael J. DeConcini                           144,888 (11)               *
                            Senior Vice President, Investments
                            and Planning / Senior Vice President
                            and Chief Operating Officer,
                            Energy Resources - TEP

             Common         Kevin P. Larson                                126,255 (12)               *
                            Vice President, Chief Financial Officer and
                            Treasurer

             Common         Vincent Nitido, Jr.                            159,565 (13)               *
                            Vice President, General Counsel and Chief
                            Administrative Officer

             Common         All directors and executive officers as a    2,016,052 (14)              5.8%
                            group

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

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

  (1) Amounts include the following:
      o  Any  shares  held  in  the  name of the spouse, minor children or other
         relatives  sharing  the  home  of  the  director or officer.  Except as
         otherwise indicated below,  the directors 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.
      o  Shares  subject  to  options  exercisable  within  60  days,  based  on
         information   from   E*Trade,  UniSource  Energy's  stock  option  plan
         administrator.



                                       4




      o  Equivalent  share  amounts  allocated  to  the individuals' 401(k) Plan
         which,  since June 1, 1998, has  included a UniSource Energy Stock Fund
         investment option.

  (2) Includes 707,764 shares subject to options exercisable within 60 days, and
      15,708 shares purchased under the 401(k) Plan  UniSource Energy Stock Fund
      as of December 31, 2004.

  (3) Includes  7,572  shares  subject  to  options  exercisable within 60 days.

  (4) Includes 10,772 shares subject to  options  exercisable  within  60  days.

  (5) Includes 14,372 shares subject  to  options  exercisable  within 60  days.

  (6) Includes 13,172 shares subject to  options  exercisable  within  60  days.

  (7) Includes  797  shares subject  to  options  exercisable  within  60  days.

  (8) Includes 5,572 shares subject  to  options  exercisable  within  60  days.

  (9) Includes 186,201  shares subject to options exercisable within 60 days,and
      2,693 shares purchased under the 401(k)  Plan UniSource Energy  Stock Fund
      as of December 31, 2004.

 (10) Includes 178,988 shares subject to options exercisable within 60 days, and
      8,420 shares  purchased under the 401(k)  Plan UniSource Energy Stock Fund
      as of December 31, 2004.

 (11) Includes 135,008 shares subject to options exercisable within 60 days, and
      4,910 shares  purchased under the 401(k)  Plan UniSource Energy Stock Fund
      as of December 31, 2004.

 (12) Includes 105,154 shares subject to options exercisable within 60 days, and
      2,337 shares  purchased under the 401(k)  Plan UniSource Energy Stock Fund
      as of December 31, 2004.

 (13) Includes 139,654 shares subject to options exercisable within 60 days, and
      4,017 shares purchased under the 401(k)  Plan  UniSource Energy Stock Fund
      as of December 31, 2004.

 (14) Includes  1,818,311  shares subject to options exercisable within 60 days,
      and 39,386 shares purchased under the 401(k)  Plan  UniSource Energy Stock
      Fund as of December 31, 2004.


          Security   As of March 28, 2005,  based  on  information  reported  in
      Ownership of   filings  made  by  the  following  persons with  the SEC or
           Certain   information   otherwise   known  to  us,    the   following
 Beneficial Owners   persons  were   known  or  reasonably   believed  to be, as
                     more  fully  described  below,  the   beneficial  owners of
                     more than 5% of our common stock:



                                                                                    Amount and
                                          Name and Address                          Nature of                      Percent
       Title of Class                    of Beneficial Owner                   Beneficial Ownership                of Class
       --------------                    -------------------                   --------------------                --------
                                                                                                         
           Common             Third Point Management Co., LLC                        2,900,000 (1)                   8.5%
                              360 Madison Ave., 24th Floor
                              New York, NY 10017

           Common             Zimmer Lucas Capital, LLC                              2,429,000 (2)                   7.1%
                              45 Broadway, 28th Floor
                              New York, NY 10006

           Common             White Mountains Insurance Group                        2,293,100 (3)                   6.7%
                              80 South Main Street
                              Hanover, NH 03755

           Common             Shumway Capital Partners, LLC                          2,205,600 (4)                   6.4%
                              600 Steamboat Road
                              Greenwich, CT 06830
-------------------

(1)  In a statement (Schedule 13D) filed with the SEC on February 7, 2005, Third
     Point  Management  Co., LLC ("Third Point")  indicated it has shared voting
     and  shared  dispositive  power  over 2,900,000 shares of our common stock.
     Third Point indicated that 1,714,700 shares are  beneficially  owned by the
     Third Point Offshore Fund, Ltd.
(2)  In a statement (Schedule 13G) filed with the SEC on January 3, 2005, Zimmer
     Lucas  Capital,  LLC  indicated  that  it  has  shared  voting  and  shared
     dispositive power over 2,429,000 shares of our common stock.
(3)  In  a  statement  (Schedule 13G)  filed  with the SEC on February 11, 2005,
     White  Mountains  Insurance  Group ("WMIG") indicated  that  it  has shared
     voting  and  shared  dispositive  power over 2,293,100 shares of our common
     stock.  WMIG  indicated  that  it  indirectly  controls,  through   various
     wholly-owned  subsidiaries  and  certain   of   its employee benefit plans,
     2,293,100 shares. WMIG stated that the shares are beneficially owned by (i)
     wholly-owned subsidiaries of  WMIG  which  are  controlled  by either White
     Mountains Advisors LLC  (1,215,000 shares)  or a third party pursuant to an
     investment 
     




                                       5



     advisory  agreement  (28,100  shares),  (ii)  employee  benefit  plans   of
     WMIG   which   are  controlled   by  White  Mountains Advisors LLC (830,000
     shares)  and  (iii) third parties  which  are controlled by White Mountains
     Advisors LLC pursuant to an investment advisory agreement (220,000 shares).

(4)  In a  statement  (Schedule 13G) filed  with  the  SEC  on February 4, 2005,
     Shumway Capital Partners,  LLC  indicated  that  it  has  shared voting and
     shared dispositive power over 2,205,600 shares of our common stock.


      Section 16(a)        Section 16(a) of the Securities Exchange Act of 1934,
         Beneficial        as  amended,  and  regulations of the SEC require our
          Ownership        executive   officers,   directors   and  persons  who
          Reporting        beneficially own more than 10% of  our  common stock,
         Compliance        as  well  as  certain affiliates of those persons, to
                           file   initial  reports  of  ownership  and   monthly
                           transaction reports covering any changes in ownership
                           with  the  SEC  and  the  New  York  Stock   Exchange
                           ("NYSE").   SEC  regulations require these persons to
                           furnish  us  with  copies  of  all  reports they file
                           pursuant to Section 16(a).

                           Based  solely  upon  a  review  of  the copies of the
                           reports received by us and on written representations
                           of  our  directors  and  officers,  we  believe that,
                           during  fiscal  year 2004, except as described below,
                           all   filing  requirements  applicable  to  executive
                           officers and directors were complied with in a timely
                           manner.   Forms  4  reporting  our  January  2,  2004
                           restricted  stock  grants  and  restricted stock unit
                           grants  to  our  non-employee directors (Mr. Aldrich,
                           Mr. Bickle,  Ms. Bilby,  Mr. Burlingame,  Mr. Carter,
                           Mr. Elliott,   Mr. Handy,   and Mr. Jobe)  were filed
                           late. Forms 4 reporting stock option exercises by Mr.
                           Delawder on  February 12, 2004,  Ms. Nichols on March
                           24, 2004,  Ms. Kissinger on May 28, 2004,  Mr. Hansen
                           on June 4, 2004,  and  Mr. DeConcini on  June 7, 2004
                           and,  in  the  case of Mr. Delawder, Ms. Nichols, and
                           Mr. DeConcini,  related  sales of stock on the option
                           exercise dates,  were filed late.   Forms 4 reporting
                           dividend  equivalent  stock  units credited under our
                           Omnibus  Stock  and  Incentive  Plan,   our   Outside
                           Director  Stock  Optio n Plan, and our Management and
                           Director  Deferred  Compensation Plan, as applicable,
                           on  June 10, 2004  and  again  on October 4, 2004 for
                           each  of  our non-employee directors identified above
                           and  for  each  of  Mr. DeConcini,  Mr. Delawder, Mr.
                           Glaser,  Mr. Hansen,  Ms. Kissinger,  Mr. Larson, Mr.
                           Nelson,  Mr. Nitido  and  Mr. Pignatelli   were filed
                           late.


                      PROPOSAL ONE: ELECTION OF DIRECTORS

            General        At the  Meeting,  our  shareholders  of  record  will
                           elect nine  directors  to serve on  our Board for the
       We will elect       ensuing year and until their  successors  are elected
       nine directors      and  qualified.  The shares  represented  by executed
       this year.          proxies in the form enclosed,  unless withheld,  will
                           be voted for the nine 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.

                                       6




BOARD NOMINEES

           James S.        Chairman   of  the   Board,   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 TEP, the
                           principal  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;  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;  Director of UES, a
                           wholly-owned  subsidiary of UniSource Energy,  since
                           2003. Board member since 1998. Age 61.

        Lawrence J.        General   Partner,   Valley   Ventures,   LP,  since
            Aldrich        September  2002;   Managing  Director  and  Founder,
                (4)        Tucson   Ventures,   LLC,   from  February  2000  to
                           September   2002;   President  and  Chief  Executive
                           Officer of Tucson  Newspapers  from  January 1992 to
                           February 2000;  Director of TEP and Millennium since
                           2000;  Director  of UES  since  2004.  Board  member
                           since 2000. Age 52.

    Larry W. Bickle        Managing  Director of Haddington  Ventures,  LLC, an
                (4)        investment  company,  since  1997;  Director  of St.
                           Mary Land and  Exploration  since 1995;  Director of
                           Millennium  since 1998;  Director of UES since 2004;
                           Responsible  Director of Infinite  Power  Solutions,
                           Inc.  ("IPS")  since 2004.  Board member since 1998.
                           Age 59.

       Elizabeth T.        Retired  President  of Gourmet  Products,  Inc.,  an
              Bilby        agricultural  product  marketing  company;   Retired
                (4)        Director  of  Marketing  of  Green  Valley   Pecans.
                           Director of TEP since 1995;  Director of  Millennium
                           from  1998-2003;  Director of UES since 2004.  Board
                           member since 1995. Age 65.

          Harold W.        Senior  Executive   Advisor  for  Cingular  Wireless
         Burlingame        Services  (formerly AT&T Wireless)  since July 2001;
          (1)(2)(3)        Executive Vice President,  Communications  and Human
                           Resources of AT&T Wireless  Services from April 2000
                           to June 2001;  Executive Vice President,  Merger and
                           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  from  November  1986  to
                           December   2002;   Chair,    Executive    Committee,
                           Organization  Resources  Counselors since June 1999;
                           Director  of TEP  since  1998.  Board  member  since
                           1998. Age 64.

     John L. Carter        Retired from IBM in 1987;  held executive  positions
       (1)(2)(3)(4)        at  various  locations  in  IBM,  including  General
                           Manager  of  IBM,  Tucson,  Arizona.  President  and
                           Chief     Executive     Officer    of    Qualtronics
                           Manufacturing,  Inc.  from 1987 to 1993.  Retired as
                           Executive   Vice   President  and  Chief   Financial
                           Officer of Burr-Brown  Corporation in 1996. Director
                           of TEP since  1996;  Director  of  Millennium  since
                           1998;  Director  of  UES  since  2004;   Responsible
                           Director of Global Solar Energy,  Inc. ("GSE") since
                           2004. Board member since 1996. Age 70.

                                       7




  Robert A. Elliott        President and owner of The Elliott  Accounting Group
          (1)(2)(3)        since 1983;  Director  and Minority  Shareholder  of
                           Southern   Arizona   Community   Bank  since   1998;
                           Director of Tucson  Urban  League from 1998 to 2004;
                           Television  Analyst/Pre-game  Show  Co-host  for Fox
                           Sports  Arizona since 1999;  Corporate  Secretary of
                           Southern  Arizona  Community Bank since 1999;  Radio
                           Host of "In the  Paint"  Sports  Talk Show from 2000
                           to  2004;   Chairman   of  the   Board   of   Tucson
                           Metropolitan   Chamber  of   Commerce   since  2002;
                           Treasurer  of Tucson Urban League from 2002 to 2003;
                           Chairman  of the Board of Tucson  Urban  League from
                           2003 to 2004;  Director of TEP since May 2003. Board
                           member since 2003. Age 49.

      Kenneth Handy        Retired  CPA;  Vice  President  and Chief  Financial
          (1)(2)(3)        Officer of The Permanente  Medical Group,  Inc. (the
                           physician   services   component   of   the   Kaiser
                           Permanente   Medical   Care   Program  in   Northern
                           California)  from 1978 to 1998;  Partner  at Ernst &
                           Ernst  (now  Ernst  &  Young)  from  1972  to  1978;
                           Director of TEP since 2001;  Director of  Millennium
                           from 2001 to 2003;  Lead Director of UES since 2004.
                           Board member since 2001. Age 66.

     Warren Y. Jobe        Retired  CPA;  Senior  Vice  President  of  Southern
          (2)(3)(4)        Company from 1998 to 2001;  Executive Vice President
                           and Chief Financial  Officer and member of the Board
                           of Directors of Georgia  Power  Company from 1982 to
                           1998;   former   President  of  the  Georgia   Power
                           Foundation  Inc.  from  1986 to  2001;  Director  of
                           Wellpoint,  Inc.  since 2001;  Director of TEP since
                           2001;  Director  of  Millennium  from  2001 to 2003;
                           Director   of  HomeBanc   Corporation   since  2004;
                           Director  of STI Classic  Funds  since  2004.  Board
                           member since 2001. Age 64.

(1)  Member of the Corporate Governance and Nominating Committee.
(2)  Member of the Audit Committee.
(3)  Member of the Compensation Committee.
(4)  Member of the Finance Committee.


            The Board recommends that you vote "FOR" these nominees.

                               BOARD INFORMATION

      Board Meetings   In  2004,  the  Board  held a  total  of 13  regular  and
                       special meetings.  Each director attended at least 75% of
                       his or her Board and  committee  meetings.  Additionally,
                       the non-management  directors met at regularly  scheduled
                       executive  sessions  without  management   present.   Mr.
                       Carter was the Lead Director at these executive sessions.

               Board   Shareholders  or  other  interested  parties  wishing  to
       Communication   communicate with the Board, the non-management  directors
                       or any individual  director may contact the Lead Director
                       by mail,  addressed  to UniSource  Energy Lead  Director,
                       c/o Corporate  Secretary,  UniSource Energy  Corporation,
                       One South  Church  Avenue,  Suite  200,  Tucson,  Arizona
                       85701. The  communications  will be kept confidential and
                       forwarded to the Lead Director.  Communications  received
                       by  the  Lead   Director   will  be   forwarded   to  the
                       appropriate    director(s)    or   to    an    individual
                       non-management director.

                       Shareholders  or  other  interested  parties  wishing  to
                       communicate  with  the  Board   regarding   non-financial
                       matters   may  contact  the Chairperson  of the Corporate
                       Governance  and  Nominating  Committee  either  by  mail,
                       addressed  to  



                                       8




                       Chairperson,   Corporate   Governance   and    Nominating
                       Committee,  UniSource   Energy  Corporation,   P. O.  Box
                       30430,   Tucson,   Arizona 85751-0430,  or by  e-mail  at
                       unscorpgov@earthlink.net.       Shareholders   or   other
                       interested   parties   wishing   to communicate  with the
                       Board regarding  financial    matters   may  contact  the
                       Chairperson  of  the  Audit  Committee  either  by  mail,
                       addressed  to  Chairperson,  Audit Committee,   UniSource
                       Energy   Corporation,   P.O.  Box 191191, Atlanta,Georgia
                       31119,   or  by  e-mail  at unscorpaudit@earthlink.net.

                       Items  that are  unrelated  to a  director's  duties  and
                       responsibilities  as a Board member may be excluded  from
                       consideration,     including,     without     limitation,
                       solicitations    and    advertisements,     junk    mail,
                       product-related  communications,  job referral  materials
                       such as resumes,  surveys and material that is determined
                       to be illegal or otherwise inappropriate.

  Board Committees     THE  AUDIT  COMMITTEE   reviews  current  and   projected
                       financial  results  of  operations,  selects  a  firm  of
                       independent  registered  public  accountants to audit our
                       financial statements annually,  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,  makes  recommendations  to
                       the  Board  for  any  changes  deemed  necessary  in such
                       procedures   and   performs   such  other   functions  as
                       delegated  by the  Board.  Our  Audit  Committee  held 11
                       meetings  in 2004  and was in full  compliance  with  its
                       written  charter,  as  amended  on  October  5,  2004 and
                       attached to this Proxy Statement as Appendix A.

                       Upon  the  recommendation  of the  Audit  Committee,  our
                       Board   adopted  a code  of  ethics  for  our  directors,
                       officers and employees.

                       THE  COMPENSATION  COMMITTEE  reviews the  performance of
                       our  directors  and  officers  and reviews  and  approves
                       directors' and officers'  compensation.  Our Compensation
                       Committee  held three  meetings  in 2004 and  was in full
                       compliance with its written charter.

                       THE FINANCE COMMITTEE  reviews  and  recommends  to   the
                       Board  long-range  financial  policies,   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 three  meetings  in 2004 and was in full  compliance
                       with its written charter.

                       THE   CORPORATE   GOVERNANCE   AND  NOMINATING  COMMITTEE
                       reviews and recommends corporate  governance  principles,
                       interviews   potential   directors   and   nominates  and
                       recommends  to the  shareholders  and  directors,  as the
                       case may be,  qualified  persons  to serve as  directors.
                       The Corporate  Governance and  Nominating  Committee also
                       reviews and recommends  membership for all the committees
                       to  the   Board   and   reviews   applicable   rules  and
                       regulations relating to

                                       9




                       the  duties  and   responsibilities  of  the  Board.  The
                       Corporate  Governance and  Nominating  Committee held two
                       meetings  in 2004  and was  in full  compliance  with its
                       written charter.

                       The  Corporate   Governance  and   Nominating   Committee
                       identifies and considers nominee  candidates  supplied by
                       shareholders and Board members.  The Corporate Secretary,
                       as directed by the Corporate  Governance  and  Nominating
                       Committee,  prepares  portfolios  for nominee  candidates
                       that include  confirmation of the  candidate's  interest,
                       independence,   biographical   information,   review   of
                       business  background and experience and reference checks.
                       The Corporate  Governance and  Nominating  Committee then
                       evaluates  candidates  using, in large part, the criteria
                       set forth in the next  paragraph  and any other  criteria
                       the Committee deems appropriate,  and conducts a personal
                       interview with each  candidate.  Upon  completion of this
                       process,   formal  invitations  are  extended  to  accept
                       election to the Board.

                       The Corporate  Governance  and  Nominating  Committee has
                       not adopted specific minimum  qualifications with respect
                       to a  Committee-recommended  Board nominee, but desirable
                       qualifications  are set  forth in the  Board  manual  and
                       include  prior   community,   professional   or  business
                       experience  that  demonstrates  leadership  capabilities,
                       the  ability  to  review  and  analyze  complex  business
                       issues,   the  ability  to   effectively   represent  the
                       interests   of  our   shareholders   while   keeping   in
                       perspective  the interests of our customers,  the ability
                       to devote the time and  interest  required  to attend and
                       fully   prepare  for  all   regular  and  special   Board
                       meetings,   the   ability   to   communicate   and   work
                       effectively  with the other Board  members and  personnel
                       and the ability to fully adhere to any  applicable  laws,
                       rules or  regulations  relating to the  performance  of a
                       director's duties and responsibilities.

                       While no formal policy exists, the  Corporate  Governance
                       and Nominating  Committee  does consider  recommendations
                       for Board nominees received from  our  shareholders.  The
                       deadline for consideration of  recommendations  for  next
                       year's annual meeting of the shareholders is  December 7,
                       2005.  Recommendations  must  be in writing  and  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 200,  Tucson,  Arizona 85701.  The
                       Board will  consider nominees on a case-by-case basis and
                       does not  believe a formal  policy is  warranted  at this
                       time due to a manageable volume of nominations.

                       Each   member  of  our   Audit  Committee,   Compensation
                       Committee   and   Corporate   Governance  and  Nominating
                       Committee  is   independent   based   upon   independence
                       criteria  established by our Board, which criteria are in
                       compliance with applicable NYSE listing standards.

                                       10




           Copies of   A  copy  of  the  Audit,   Compensation   and  Corporate
           Charters,   Governance and Nominating Committee Charters, as well as
      Guidelines and   our Corporate Governance  Guidelines and code of ethics,
      Code of Ethics   are available on our Web site at www.unisourceenergy.com
                       or 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, Tucson, Arizona 85714.


                               BOARD COMPENSATION

   Retainer and Fees   In 2004, each  non-employee  director received a $20,000
                       annual  cash  retainer,  $1,000 for each  Board  meeting
                       attended,  $1,000 for each  committee  meeting  attended
                       and  an  additional  $1,000  per  committee  meeting  if
                       acting  as  a  committee   chairperson.   We   reimburse
                       directors  for any expenses  related  to their Board and
                       committee service.

                       Effective  for 2005, a  Chairmanship  retainer  replaces
                       the additional $1,000 per committee  meeting  previously
                       paid to the committee chairman.  The annual Chairmanship
                       retainer for the Audit  Chairman is $20,000.  The annual
                       Chairmanship   retainer  for  all  other  Chairmanships,
                       including special committee  chairmanships,  is $15,000.
                       Chairmanship  retainers  will be credited to  individual
                       Director  accounts  in the form of stock  units and will
                       accrue dividend  equivalent stock units. The stock units
                       will  be  distributed  in  cash  in the  year  following
                       termination  of Board service  unless  UniSource  Energy
                       solicits  and  receives  shareholder  approval for a new
                       stock  incentive plan, in which case the stock units may
                       be distributed  in shares at the Board's or Compensation
                       Committee's discretion.

        Option and     Under  the  terms of  the 1994  Outside  Director  Stock
  Restricted Share     Option Plan,  each  non-employee  director in  office on
            Grants     the first  business day of each year,  and  who has been
                       a  director  for at least  three  months,  is granted  a
                       stock option  covering a number of shares of our  common
                       stock  equal  to  $10,000  divided  by the  value of  an
                       option as of the date of grant.  In 2004,   non-employee
                       directors  received an award of  restricted  stock units
                       in lieu  of  stock  options  due to the  impact  of  the
                       proposed  merger  on  the  market  value  of our  common
                       stock.   Restricted   stock   units  vest  in  one-third
                       increments over three years.

                       Each  non-employee   director  in  office  on the  first
                       business  day of each year  is also  granted a number of
                       restricted  shares of our  common stock equal to $10,000
                       divided  by  the then  fair  market  value of a share of
                       our common stock.  Restricted  shares vest on the  third
                       anniversary of the grant date.

                       On January 2, 2004, each  of the non-employee  directors
                       received 405  restricted  stock units and 405 restricted
                       shares of our common stock.

                       Effective   for   2005,   the   value   of  the   equity
                       compensation    component   of   non-employee   director
                       compensation  is  increased  from  $20,000  to  $40,000.
                       Because  awards  valued at  $20,000  were made under the
                       1994  Outside  Director  Stock  Option  Plan in  January
                       2005, a one-time  award of restricted  stock units equal
                       to $20,000  divided by the then fair  market  value of a
                       share  of  our  common  stock,  will  be  made  to  each
                       non-employee  director  in  office on May 6,  2005,  the
                       date of the annual Shareholder  Meeting. The awards will
                       vest over a  one-year  period  and,  

                                       11




                       once   vested,   will  accrue  dividend  equivalent stock
                       units.  The  stock  units will  be  distributed  in  cash
                       in  the  year  following  termination  of  Board  service
                       unless   UniSource    Energy   solicits    and   receives
                       shareholder  approval for a new stock  incentive plan, in
                       which  case  the stock units may be distributed in shares
                       at the Board's or  Compensation  Committee's  discretion.
                       Unvested  awards  are forfeited at termination other than
                       for disability or retirement.



                                      DIRECTOR COMPENSATION FOR LAST FISCAL YEAR



                                               Cash Compensation                           Security Grants
                                       --------------------------------------   ---------------------------------------
                                                                                 Number of Shares        Number of
                                         Annual                                     Subject to           Securities
                                        Retainer                Meeting         Restricted Stock     Underlying Options
            Name (1)                  Fee ($) (2)            Fees ($) (2)             Award
-------------------                   -----------            ----------------   ----------------      -----------------
                                                                                               
Lawrence J. Aldrich                      20,000                 22,000 (3)(5)          810                    0

Larry W. Bickle                          20,000                 20,000 (4)(5)          810                    0

Elizabeth T. Bilby                       20,000                 27,000 (5)             810                    0

Harold W. Burlingame                     20,000                 31,000                 810                    0

John L. Carter                           20,000                 48,000 (3)(4)(5)       810                    0
                                                       
Robert A. Elliott                        20,000                 30,000                 810                    0

Kenneth Handy                            20,000                 35,000 (3)(5)          810                    0

Warren Y. Jobe                           20,000                 44,000                 810                    0


-------------------
(1)  Mr. Pignatelli  is  not  listed  in  this  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 his
     compensation.
(2)  Cash compensation includes  amounts earned  but deferred at the election of
     directors.
(3)  As members of the GSE board, Mr. Aldrich  and  Mr. Carter each  received an
     additional $2,000 and Mr. Handy received an additional $1,000 for attending
     GSE board meetings during 2004. UniSource Energy owns 99% of GSE.
(4)  As  members  of  the  IPS board,  Mr. Bickle  and  Mr. Carter  received  an
     additional  $3,000  for attending IPS board meetings during 2004. UniSource
     Energy owns 72% of IPS.
(5)  As members of the UES board,  Mr. Aldrich,  Ms. Bilby,  Mr. Carter  and Mr.
     Handy  each  received  an  additional  $3,000  and  Mr. Bickle  received an
     additional $2,000 for attending UES board meetings during 2004.   UniSource
     Energy owns 100% of UES.



                                       12





                  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,   the  Named
                     Executives.


                                              SUMMARY COMPENSATION TABLE

                                               Annual Compensation               Compensation Awards
                                             -----------------------      ---------------------------------

                                                                           Restricted          Securities           All Other
            Name and                                                      Stock Awards         Underlying         Compensation
       Principal Position          Year     Salary ($)     Bonus ($)         ($) (1)         Options/SARs (#)         ($) (2)
       ------------------          ----     ----------     ---------       -----------       ----------------     ------------ 
                                                                                                
James S. Pignatelli                2004        624,231        525,000           --                    0               13,000
Chairman, President and            2003        599,327        550,000           --               21,226               12,000 
Chief Executive Officer            2002        574,654        320,000           --              150,000               11,000

Steven J. Glaser                   2004        284,692        178,000           --                    0                9,225
Senior Vice President and Chief    2003        274,596        166,000           --                9,729               11,232
Operating Officer, Transmission    2002        259,654        110,000           --               45,000               11,000
& Distribution - TEP

Dennis R. Nelson                   2004        274,846        137,000           --                    0               12,368
Senior Vice President and Chief    2003        269,732        150,000           --                9,552               12,000
Operating Officer - UES            2002        260,000         90,000           --               45,000               11,000

Michael J. DeConcini               2004        244,537        138,000           --                    0               11,004
Senior Vice President,             2003        229,192        145,000           --                8,137               10,314
Investments and Planning /         2002        199,654         72,000           --               40,000               11,000
Senior Vice President and Chief
Operating Officer, Energy
Resources - TEP

Kevin P. Larson                    2004        229,692        130,000           --                    0               10,336
Vice President, Chief Financial    2003        219,462        145,000           --                7,783                9,876
Officer and Treasurer              2002        199,656         76,000           --               35,000               11,000

Vincent Nitido, Jr.                2004        229,692        130,000           --                    0                9,225
Vice President, General Counsel    2003        219,462        145,000           --                7,783                9,876
and Chief Administrative Officer   2002        199,654         68,000           --               40,000               11,000


-------------------
(1)  As of  December 31, 2004,  based on  the closing  market price of UniSource
     Energy's stock on that date of $24.11, Mr. Pignatelli  held  110,915  stock
     units (including dividend equivalent stock units) valued at $2,674,162; Mr.
     Glaser held 28,003 stock units (including dividend  equivalent stock units)
     valued at $675,149; Mr. Nelson held 24,653 stock units  (including dividend
     equivalent stock units) valued at $594,372; Mr. DeConcini held 24,356 stock
     units (including dividend equivalent stock units) valued  at $587,232;  and
     Mr. Nitido held 16,374 stock units valued at $394,777.
(2)  All Other Compensation is comprised of UniSource Energy's contributions  to
     the  401(k) Plan  and  Excess 401(k) contributions to the  UniSource Energy
     Corporation Management and Directors Deferred Compensation Plan.




                                       13


         Stock Option   During 2004, the  Compensation  Committee of  our Board
       Grants in 2004   granted no stock options to officers.

       Option and SAR   The following  table  includes the  number and value of
       Holdings as of   exercisable and non-exercisable options  and SARs  held
        December 31,    by the  Named Executives as of December 31, 2004.
                 2004   


                                              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 Fiscal        In-the-Money Options/SARs at
                                Acquired                              Year-End (#)                  Fiscal Year End ($)
                               on Exercise        Value               Exercisable/                     Exercisable/
           Name                    (#)          Realized($)           Unexercisable                  Unexercisable(1)
---------------------          -----------      -----------       ----------------------       -----------------------------

                                                                                                 
James S. Pignatelli               7,424          $53,022                707,764 / 0                    5,997,824 / 0

Steven J. Glaser                  3,671          $28,256                186,201 / 0                    1,476,105 / 0

Dennis R. Nelson                  4,543          $37,380                178,988 / 0                    1,492,992 / 0

Michael J. DeConcini                342           $2,849                135,008 / 0                    1,082,951 / 0

Kevin P. Larson                   2,014          $16,716                105,154 / 0                      858,056 / 0

Vincent Nitido, Jr.               1,939          $15,882                139,654 / 0                    1,111,732 / 0

-------------------
    (1)  Includes  cash  dividend  equivalents  on stock options awarded in 2002
         under the 1994 UniSource Energy Corporation Omnibus Stock and Incentive
         Plan.



      2004 Long-Term      The following  table  includes  the number of shares,
      Incentive Plan      units  or  other   rights   awarded   to   the  Named
              Awards      Executives   in  the  last  fiscal  year   under  any
                          long-term incentive plan.

                          Payout of the 2004  long-term   incentive plan awards
                          was  based  on   the  achievement,  during  the  2004
                          performance  period,  of  three financial  goals. The
                          three  equally-weighted  financial  goals  were   UNS
                          earnings per share,  TEP  operating cash flow and UNS
                          consolidated    operating   cash   flow.    Threshold
                          performance  is   achieved  at  80%  of  target,  and
                          exceptional  performance   is  achieved  at  120%  of
                          target.

                                       14



                            LONG-TERM INCENTIVE PLANS
                           AWARDS IN LAST FISCAL YEAR



                                  Number of Shares,        Performance or Other Period           Future Payouts under
           Name               Units or Other Rights (#)     Until Maturation or Payout        Non-Stock Price-Based Plans
                                                                                                          Payable
                                                                                                       (# or $) (1)
        -----------           -------------------------     ---------------------------       ----------------------------
                                                                                                
James S. Pignatelli                  625,000 (2)               1/1/04 - 12/31/04                         $625,000
Steven J. Glaser                     285,000 (2)               1/1/04 - 12/31/04                         $285,000
Dennis R. Nelson                     275,000 (2)               1/1/04 - 12/31/04                         $275,000
Michael J. DeConcini                 245,000 (2)               1/1/04 - 12/31/04                         $245,000
Kevin P. Larson                      230,000 (2)               1/1/04 - 12/31/04                         $230,000
Vincent Nitido, Jr.                  230,000 (2)               1/1/04 - 12/31/04                         $230,000
-------------------

       (1)  Based  on  the  achievement  of  the  three financial goals in 2004,
            awards   were  granted  at 120% of target.  Payouts  vest and become
            payable in one-third increments on March 18, 2005, January  2006 and
            January 2007.
       (2)  Performance units are denominated in cash. One performance unit
            equals $1.00.



                      EQUITY COMPENSATION PLAN INFORMATION

                  Equity   Our only equity-based  compensation plan that has not
      Compensation Plans   been approved by  shareholders  is the Management and
                           Directors  Deferred  Compensation  Plan (the  "DCP").
                           Shareholder   approval   of  the  DCP  has  not  been
                           required.  Under the DCP, certain  eligible  officers
                           and other employees selected for  participation,  and
                           non-employee  members  of the  Board,  may  elect  to
                           defer a percentage of the  compensation  or fees that
                           would otherwise  become payable to the individual for
                           their  services to us. We also credit DCP accounts of
                           employees  participating  in our 401(k) Plan with the
                           additional   amount  of  UniSource   Energy  matching
                           contributions  that the  participant  would have been
                           entitled  to under the 401(k)  Plan if  certain  Code
                           limits   did  not  apply  to  limit  the   amount  of
                           UniSource  Energy matching  contributions  made under
                           the  401(k)  Plan.  Each  participant  in the DCP may
                           elect that his or her  deferrals  be  credited in the
                           form  of  deferred   shares.   Deferred   shares  are
                           bookkeeping entries that, when payable,  will be paid
                           in the form of an  equivalent  number  of  shares  of
                           UniSource   Energy  common  stock.   Deferred  shares
                           accrue dividend equivalents,  credited in the form of
                           additional  deferred shares, as dividends are paid by
                           UniSource   Energy  on  its  issued  and  outstanding
                           common stock.  Each  participant  elects the time and
                           manner of payment (lump sum or  installments)  of his
                           or her  deferred  shares  under the DCP.  The  shares
                           used to satisfy our stock  obligations  under the DCP
                           are  shares  that  have  been  purchased  on the open
                           market.

                                       15



                         EQUITY COMPENSATION PLAN TABLE

                  Equity   The  following  table  sets forth  information  as of
            Compensation   December   31,   2004,   with  respect  to  UniSource
                           Energy's equity compensation plans.


                                   Number of Shares of                                 Number of Shares of UniSource Energy
                                UniSource Energy Common                               Common Stock Remaining Available for
                                       Stock to                                          Future Issuance Under Equity
                                be Issued Upon Exercise          Weighted-Average       Compensation Plans (Excluding
                                      of Outstanding            Exercise Price of            Shares Reflected
       Plan Category                Options and Rights         Outstanding Options          in the First Column
------------------------      ------------------------        ---------------------  ---------------------------------

                                                                                         
Equity Compensation Plans               2,328,674 (2)             $16.19  (3)                     983,175  (4)
Approved by Shareholders (1)
                                                                    --
Equity Compensation Plans                  55,951 (5)                                                  --  (6)
Not Approved by Shareholders
                                                                    --                                 --
Total                                   2,384,625

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

          (1)  The equity  compensation  plans  approved by shareholders are the
               UniSource  Energy  Corporation  1994  Omnibus Stock and Incentive
               Plan  and  the UniSource Energy Corporation 1994 Outside Director
               Stock  Option  Plan.   Under  the  terms  of the UniSource Energy
               Corporation  1994 Omnibus  Stock and Incentive Plan, no award may
               be granted after February 3, 2004.  The  plan   remains in effect
               until  all  awards  have expired or terminated or shall have been
               exercised or fully  vested, and any stock thereto shall have been
               purchased or acquired.
          (2)  Includes  options  outstanding  as to 2,075,552 shares, and stock
               units, dividend equivalent stock units and restricted stock units
               (payable in  an  equivalent  number  of shares) outstanding as to
               253,122 shares.
          (3)  Calculated  based  on  the  outstanding  options and exclusive of
               outstanding stock units.
          (4)  Of  these  shares,  813,557  were available for additional awards
               under  the 1994 Omnibus Stock and Incentive Plan and 169,618 were
               available  for  additional awards under the 1994 Outside Director
               Stock Option Plan. Although 813,557 shares remained available for
               grant  under  the 1994 Omnibus Stock and Incentive Plan, pursuant
               to  the  plan  document,  no award  may be granted under the Plan
               after February 3, 2004.  Shares  available  under either of these
               plans may  be  used  for  any type of award authorized under that
               plan.   Awards  authorized  under  the  1994  Omnibus  Stock  and
               Incentive  Plan  include  options,  stock   appreciation  rights,
               restricted  stock,  performance  shares  and  stock units. Awards
               authorized  under  the  1994  Outside Director Stock Plan include
               options, restricted stock and dividend equivalents.
          (5)  Deferred shares credited under the DCP.
          (6)  There  is  no  explicit  share limit under the DCP. The number of
               shares to  be delivered  with  respect  to  the DCP in the future
               depends on the levels of fees and  compensation that participants
               elect to defer under the DCP. The UniSource Energy shares used to
               satisfy  our stock obligations under the DCP are shares that have
               been purchased on the open market.


     Pension Plans   The   following   table   shows   the   estimated    annual
                     retirement      benefit     payable    to     participants,
                     including    the   Named   Executives,   for   the  average
                     annual    compensation  and  years  of  service  indicated.
                     Compensation   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.

                                       16




                                                    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         263,280         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
       1,100,000               482,680         482,680        482,680         482,680         482,680         482,680
       1,200,000               526,560         526,560        526,560         526,560         526,560         526,560
       1,300,000               570,440         570,440        570,440         570,440         570,440         570,440
       1,400,000               614,320         614,320        614,320         614,320         614,320         614,320



                     The  amount of the  pension  benefit  is equal to a base of
                     40% of the  compensation  for ten  years of  service,  plus
                     9.7% (life annuity factor) 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
                     regulations.

                                       17


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

                                                                    Credited
                                 Name                           Years of Service
                         -------------------                    ----------------
                         James S. Pignatelli                            10
                         Steven J. Glaser                               15
                         Dennis R. Nelson                               27
                         Michael J. DeConcini                           16
                         Kevin P. Larson                                19
                         Vincent Nitido, Jr.                            14

                      OFFICER CHANGE IN CONTROL AGREEMENTS

    Change in Control     TEP has Change in Control  Agreements  ("Agreements")
    Agreements were       with  all  of its  officers.  The  Agreements  are in
    adopted to            effect  until the later of: (i) five years  after the
    attract and           date either TEP or the officer gives  written  notice
    retain quality        of termination of the Agreement,  or (ii) if a change
    management.           in control  occurs during the term of the  Agreement,
                          five years after the change in control.  On March 29,
                          2004,  a change in control  occurred for purposes  of
                          the Agreements when our  shareholders,  at a special
                          meeting,  approved the  acquisition   agreement  that
                          provided for an affiliate of  Saquaro  Utility  Group
                          L.P.  to acquire  all of  our  outstanding  shares of
                          common stock. This was  not affected by the fact that
                          the acquisition was ultimately not consummated.

                          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 his or her
                          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).

                          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  employment   because  of a  reduction  in
                          position,    responsibility,   compensation   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  annual   salary and bonus  compensation,
                          (ii) the present  value of the additional  amount the
                          officer   would    have   received   under   the  TEP
                          Retirement  Plan  if the officer had  continued to be
                          employed for the  five-year  period after a change in
                          control occurs,   plus (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  by
                          us.  Assuming Mr.  Pignatelli's  and  the other Named

                                       18



                          Executives'  employment  was  terminated,   the total
                          payments  made  by UniSource  Energy  pursuant to the
                          Agreements  would  not  be  expected  to  exceed  $20
                          million.

                          On March 3, 2005,  TEP  provided  the  officers  with
                          respect  to which  the  Agreements  were in effect at
                          that  time,  written  notice of  termination  of  the
                          Agreements.    Pursuant   to   the   terms   of   the
                          Agreements,  the termination  will  become  effective
                          on March 3, 2010, the fifth  anniversary of  the date
                          of the written notice of termination.

                         DIRECTOR INDEPENDENCE CRITERIA

    Board independence   The Board has established  the following  criteria for
    is determined by     determining   independence,  among  other  things,  in
    consideration of     order to determine  eligibility  to serve on the Audit
    established          Committee,   the   Compensation   Committee   and  the
    criteria.            Corporate Governance and Nominating Committee.

                         Directors  that  meet each of the  following  criteria
                         are deemed independent:

                         1.    A  director  who  is an  employee of the Company
                               or   whose  immediate   family   member   is  an
                               executive officer  of  the  Company   cannot  be
                               "independent"  until   three  years   after  the
                               employment has ended.  Employment as  an interim
                               Chairman or CEO shall not disqualify  a director
                               from   being  considered  independent  following
                               that employment.

                         2.    A  director  who  is, or in the past three years
                               has  been,  affiliated  with  or  employed  in a
                               professional  capacity  by a  present  or former
                               internal or  external  auditor of the Company or
                               whose  immediate  family  member  is,  or in the
                               past three  years has been,  affiliated  with or
                               employed  in  a   professional   capacity  by  a
                               present or former  internal or external  auditor
                               of the  Company  cannot be  "independent"  until
                               three  years  after the end of the  affiliation,
                               employment or auditing relationship.

                         3.    A   director   who   is   employed,   or   whose
                               immediate  family  member  is  employed,  as  an
                               executive  officer of another  company where any
                               of the  Company's  present  executives  serve on
                               that  company's  compensation  committee  is not
                               "independent"  until  three  years after the end
                               of such service or the employment relationship.

                         4.    A  director  who  receives,  or whose  immediate
                               family member  receives,  more than $100,000 per
                               year in direct  compensation  from the  Company,
                               other  than  director  and  committee  fees  and
                               pension or other forms of deferred  compensation
                               for prior service  (provided  such  compensation
                               is  not  contingent  in  any  way  on  continued
                               service),  is not independent  until three years
                               after he or she  ceases  to  receive  more  than
                               $100,000 per year in such compensation.

                                       19


                               Compensation  received by a director  for former
                               service as an interim  Chairman  or CEO need not
                               be  considered  in   determining   independence.
                               Compensation  received  by an  immediate  family
                               member for service as a  non-executive  employee
                               of  the  Company  need  not  be   considered  in
                               determining independence under this test.

                         5.    A  director  who is an  executive  officer or an
                               employee,  or whose  immediate  family member is
                               an  executive  officer,  of a company that makes
                               payments  to, or  receives  payments  from,  the
                               Company  for  property  or services in an amount
                               which,  in any single  fiscal year,  exceeds the
                               greater  of  $1  million  or 2%  of  such  other
                               company's  consolidated  gross  revenue,  is not
                               "independent"  until three  years after  falling
                               below such threshold.

                         6.    Directors   who   possess  an  interest  in  any
                               transaction  for  which   disclosure   would  be
                               required   pursuant   to  Item   404(a)  of  SEC
                               Regulation  S-K  (generally,  this item requires
                               proxy   statement   disclosure  of  transactions
                               exceeding  $60,000  between a director  and the
                               Company  or  any of our  subsidiaries)  are  not
                               independent.

                         7.    Directors  that  do  not  meet  item  6  of  the
                               aforementioned   criteria  may   nonetheless  be
                               deemed  independent by a majority of independent
                               directors,   provided   the   basis   for   such
                               determination   shall   be   disclosed   in  the
                               Company's Proxy Statement.

                         Based  upon the  foregoing  criteria,  the  Board  has
                         deemed  each  director  to be  independent,  with  the
                         exceptions of Mr. Aldrich,  Mr. Bickle,  Ms. Bilby and
                         Mr. Pignatelli. See "Transactions with  Management and
                         Others" below.

                    TRANSACTIONS WITH MANAGEMENT AND OTHERS

            Haddington  Millennium  was  authorized by its Board of Directors in
                Energy  2000 to invest $15 million, in aggregate,  over a three-
        Partners II LP  to five-year  period in  Haddington  Energy  Partners II
                        LP. Mr. Bickle,  a member of our Board,  is the managing
                        director  of   Haddington   Ventures  LLC,  the  general
                        partner  of  Haddington  Energy  Partners  II LP.  As of
                        December 31, 2004,  Millennium had funded  approximately
                        $10.9  million  under this  commitment,  $2.4 million of
                        which was funded in 2004.

  Valley Ventures III,  In 2000,  Millennium  made a commitment of $5 million in
                    LP  capital  plus a share of  expenses  to Tucson  Ventures,
                        LLC, a venture capital fund. In 2002,  Tucson  Ventures,
                        LLC merged with Valley  Ventures III, LP, also a venture
                        capital  fund.  In  connection  with the  merger  of the
                        funds,  Millennium's  commitment  was revised to a total
                        of  $6  million,  including  expenses.  Mr.  Aldrich,  a
                        member  of  our  Board,  is a  general  partner  of  the
                        company  that  manages  Valley  Ventures  III, LP. As of
                        December 31, 2004,  Millennium had funded  approximately
                        $3.3 million under this commitment.

     Millennium Energy  Mr.  Stephen  Alexander,  an immediate  family member of
           Investments  Ms.  Bilby,  a  member  of our  Board,  is  employed  by
                        Millennium.  As  Director  of  Energy  Investments,  Mr.
                        Alexander assists in overseeing  Millennium's investment
                        portfolio.  For his  services  in  2004,  Mr.  Alexander
                        received  compensation  of  approximately  $150,000 from
                        Millennium.

                                       20



            COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION

         The Committee   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.    The    Compensation     Committee    makes
                         recommendations  to  the  Board  with  respect  to 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 Objectives   UniSource  Energy's  executive  compensation  policies
                         and programs  generally are intended to (i) relate the
                         compensation  of employees to the success of UniSource
                         Energy and the  corresponding  creation of shareholder
                         value and  deliver  rewards for  superior  performance
                         and   consequences   for   underperformance  and  (ii)
                         attract,  retain  and   motivate  executives  and  key
                         employees with competitive compensation opportunities.

             Executive   The  Compensation  Committee  reviews our  executives'
          Compensation   compensation each year.  Compensation  depends on many
             Generally   factors,     including     individual     performance,
                         responsibilities,  future  challenges  and  objectives
                         and  the  executive's  potential  contribution  to our
                         future success. The Compensation  Committee also looks
                         at our  financial  performance  and  the  compensation
                         levels at comparable companies.

                         UniSource    Energy's   2004   compensation    program
                         consisted of three components:

                            o        base salary;
                            o        short-term incentive compensation; and
                            o        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 2004,
                         the  consultant   selected  a  peer  group  of  energy
                         companies  with a  revenue  range of $585  million  to
                         $1.6  billion.  UniSource  Energy  ranks  at the  33rd
                         percentile   of  the  peer   group.   The  peer  group
                         companies  were  selected  based on (i)  similarity to
                         UniSource  Energy in terms of business  sector  (i.e.,
                         electric   services   and  natural  gas   distribution
                         companies)  and  (ii)  comparable  size  to  UniSource
                         Energy in terms of sales  and  market  capitalization.
                         The   Compensation   Committee   believes   that   the
                         companies  in the peer group  are a  more  appropriate
                         comparison   for  UniSource  Energy  than  the  Edison
                         Electric 100 companies used in the  Performance  Graph
                         on  page  27  of  this  Proxy Statement   because  the
                         type   of   business,   annual   revenues  and  market
                         capitalization  of  the  companies   included  in  the
                         survey  are   more   closely   related   to   those of
                         UniSource  Energy  and   the  companies  in  the  peer
                         group  are  primary  competitors  of  UniSource Energy
                         for    top-level     management     personnel.     The
                         external  data from  companies  in the peer  group was
                         used  to   develop   market   compensation   for  each
                         executive position.  "Market  compensation"  refers to
                         the median  salary for  executives  in the peer group.
                         Base   salaries  for  UniSource   Energy's   executive
                         officers,  including  Mr.  Pignatelli  and  the  other

                                       21



                         Named  Executives,  were  set at  market  compensation
                         levels  in  January  2004,  in   recognition   of  the
                         increasingly  competitive  environment in the electric
                         industry,  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  performance  targets
                         and 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
                         2004,  the  target  award  levels  for  our  executive
                         officers  ranged  from  30%  to 70%  of  base  salary.
                         Awards for Mr. Pignatelli and the remaining  executive
                         officers  are  determined  by the  Board  based on the
                         achievement of corporate  financial  goals,  including
                         earnings  per share and  consolidated  cash flow,  and
                         the    accomplishment   of   previously    established
                         individual   goals  and   contribution   to   business
                         results.   Based  on  the   foregoing   factors,   the
                         Compensation   Committee  made  awards  to  the  Named
                         Executives  ranging from 56% to 84% of base salary. In
                         determining Mr.  Pignatelli's  award, the Compensation
                         Committee  focused on the  achievement  of  previously
                         established   strategic,   financial,   operating  and
                         community  goals.  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
             Incentive   is intended to attract  and retain  quality  employees
          Compensation   over the  long-term in a manner that  directly  aligns
                         their  interests  with  those  of  UniSource  Energy's
                         shareholders and promote UniSource  Energy's long-term
                         performance goals.

                         On  February  5,  2004,  the  Compensation   Committee
                         awarded  performance  units  (denominated  in cash) to
                         all executive officers of UniSource Energy,  including
                         Mr.  Pignatelli  and the other  Named  Executives.  In
                         calculating  the  level  of  awards  to the  executive
                         officers,  the Compensation  Committee  considered the
                         above   analysis   of   executive    compensation   at
                         comparative  companies.  Based on such  analysis,  the
                         Compensation  Committee awarded Mr. Pignatelli and the
                         other Named Executives  performance units with a total
                         value   equal  to  100%  of  base  salary  for  target
                         performance.  The number of performance  units awarded
                         to Mr.  Pignatelli  was 625,000.  See "2004  Long-Term
                         Incentives  Plan  Awards"  on page  14 of  this  Proxy
                         Statement   for  a  discussion   of  the   performance
                         criteria  upon which the payout of  performance  units
                         is  dependent.   In  determining  the  2004  long-term
                         incentive awards,  the Compensation  Committee did not
                         consider awards,  including stock options,  previously
                         granted or outstanding.

                                       22


                         The  Compensation   Committee   believes  that  senior
                         management  should have a significant  equity interest
                         in  UniSource  Energy.  In  order  to  promote  equity
                         ownership   and  further   align  the   interests   of
                         management   with   those   of   UniSource    Energy's
                         shareholders,   the  Compensation   Committee  adopted
                         share  retention and ownership  guidelines  for senior
                         management  at its  February  3, 2005  meeting.  Under
                         these  guidelines  certain  executives are expected to
                         maintain   a   significant   ownership   position   in
                         UniSource   Energy  common   stock,   expressed  as  a
                         multiple of their salary as follows:


                            o  Chairman, President and 
                               Chief Executive Officer           5 times salary

                            o  Senior Vice President             3 times salary

                            o  Other Vice President              1 times salary


                         The  Compensation  Committee periodically reviews share
                         ownership  levels  of  the  persons  subject  to  these
                         guidelines.   The   following  types  of   shares count
                         towards  meeting  the  specified  ownership levels: (i)
                         shares owned outright, jointly with spouse, or in trust
                         for  the  executive's  benefit,  (ii)  shares  held  in
                         qualified  retirement and savings plans and (iii) stock
                         units  payable  in shares held in nonqualified deferred
                         compensation  accounts.  Nine  of  the  ten  executives
                         subject to these guidelines have achieved shareholdings
                         in   excess  of  the  applicable   multiple  set  forth
                         above.

     Tax Code Concerns   The  Compensation  Committee does not presently have a
                         policy  regarding  qualifying   compensation  paid  to
                         executive  officers for  deductibility  under  Section
                         162(m) of the Code.

                                         Respectfully submitted,

                                         THE COMPENSATION COMMITTEE
                                         Harold W. Burlingame, Chair
                                         John L. Carter
                                         Robert A. Elliott
                                         Kenneth Handy
                                         Warren Y. Jobe

                                       23


                             AUDIT COMMITTEE REPORT

     The Committee   The  Audit  Committee  is  made  up  of  five  financially
                     literate   directors  who  are   independent   based  upon
                     independence  criteria  established  by our  Board,  which
                     criteria are in compliance  with  applicable  NYSE listing
                     standards.  Our  Board  has  determined  that  while  each
                     member  of  the  Audit  Committee  has  accounting  and/or
                     related financial  management  expertise,  Mr. Jobe is the
                     Audit Committee  financial expert for the purposes of Item
                     401(h) of SEC  Regulation  S-K. In  addition to Mr.  Jobe,
                     there are two other  financial  experts on the  Committee.
                     Each financial  expert is independent as that term is used
                     in Item  7(d)(3)(iv)  of Schedule 14A under the Securities
                     and Exchange Act of 1934. The Board  previously  adopted a
                     written  charter  for the Audit  Committee.  On October 5,
                     2004,  the Board approved  amendments to the Charter.  The
                     Audit Committee  Charter is included as Appendix A to this
                     Proxy  Statement.  The  Committee  has  complied  with its
                     charter,  including the  requirement to meet  periodically
                     with our independent  auditors,  internal audit department
                     and  management  to discuss  the  auditors'  findings  and
                     other financial and accounting matters.

                     In  connection   with  our  December  31,  2004  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.

                     Based on all of its activities  during the year, the Audit
                     Committee  recommended  to  the  Board  that  the  audited
                     financial  statements  for 2004 be  included in the Annual
                     Report on Form 10-K for filing with the SEC.

      Pre-Approved   Rules   adopted   by  the  SEC  in  order   to   implement
      Policies and   requirements  of the  Sarbanes-Oxley  Act of 2002  require
        Procedures   public company audit  committees to pre-approve  audit and
                     non-audit  services.  Our Audit  Committee  has  adopted a
                     policy  pursuant to which  audit,  audit-related,  tax and
                     other  services are  pre-approved  by category of service.
                     Recognizing  that  situations may arise where it is in our
                     best  interest  for the  auditor  to perform  services  in
                     addition to the annual audit of our financial  statements,
                     the  policy  sets forth  guidelines  and  procedures  with
                     respect  to  approval  of the four  categories  of service
                     designed  to achieve  the  continued  independence  of the
                     auditor when it is retained to perform  such  services for
                     us.  The  policy   requires  the  Audit  Committee  to  be
                     informed  of  each   service  and  does  not  include  any
                     delegation of the Audit  Committee's  responsibilities  to
                     management.  The  Audit  Committee  may  delegate  to  the
                     Chairman of the Audit  Committee  the  authority  to grant
                     pre-approvals  of audit and non-audit  services  requiring
                     Audit Committee

                                       24




                     approval where the Audit  Committee  Chairman  believes it
                     is desirable to  pre-approve  such  services  prior to the
                     next regularly  scheduled  Audit  Committee  meeting.  The
                     decisions of the Audit  Committee  Chairman to pre-approve
                     any such  services  from  one  regularly  scheduled  Audit
                     Committee  meeting  to the next shall be  reported  to the
                     Audit Committee.

              Fees   The    following    table    details    fees    paid    to
                     PricewaterhouseCoopers,   LLP  for  professional  services
                     during 2003 and 2004.  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.





                                                   2003                  2004
                                                 --------            ----------
                       
                                                                      
                       Audit Fees                $903,566            $2,190,556
                          
                       Audit-Related Fees        $644,744               $76,583
                      
                       Tax Fees                   $98,645                $2,002
                            
                       All Other Fees              $2,598                $3,228



                      Audit fees include fees for the audit of our  consolidated
                      financial  statements  included  in our  Annual  Report on
                      Form 10-K and review of financial  statements  included in
                      our  Quarterly  Reports  on Form  10-Q.  Audit  fees  also
                      include services provided by  PricewaterhouseCoopers,  LLP
                      in  connection  with  the  audit of the  effectiveness  of
                      internal   control  over   financial   reporting   and  on
                      management's  assessment of the  effectiveness of internal
                      control  over  financial   reporting,   comfort   letters,
                      consents  and other  services  related to SEC  matters and
                      financing  transactions,  statutory and regulatory audits,
                      and accounting  consultations  to the extent necessary for
                      PricewaterhouseCoopers,     LLP    to    fulfill     their
                      responsibilities   under   generally   accepted   auditing
                      standards.  Audit fees in connection with the audit of the
                      effectiveness   of   internal   control   over   financial
                      reporting   and   on   management's   assessment   of  the
                      effectiveness   of   internal   control   over   financial
                      reporting  in  compliance  with   Sarbanes-Oxley   totaled
                      $1,395,841  (already  included  in Audit Fees in the table
                      above) in 2004.

                      Audit-related  fees during 2004  principally  include fees
                      for employee  benefit  plan audits and due  diligence-type
                      services  related to proposed  acquisitions.  During 2003,
                      audit-related  fees related primarily to the audits of the
                      gas and electric  system  assets  acquired  from  Citizens
                      Communications  Company  on August 11,  2003 (for  periods
                      prior to the  acquisition  date) and  audits  of  employee
                      benefit plans.

                      Tax  fees  include  tax  compliance,  tax  advice  and tax
                      planning.

                      All other  fees  consist  of fees for all  other  services
                      other than  those  reported  above and,  in 2003 and 2004,
                      principally include subscription fees for research tools.

                                       25


                      All services performed by PricewaterhouseCoopers,  LLP are
                      approved in advance by the Audit  Committee in  accordance
                      with  the  Audit  Committee's   pre-approval   policy  for
                      services provided by the independent auditor.

                                         Respectfully submitted,

                                         THE AUDIT COMMITTEE

                                         Warren Y. Jobe, Chair
                                         Harold W. Burlingame
                                         John L. Carter
                                         Robert A. Elliott
                                         Kenneth Handy


                                       26





                                PERFORMANCE GRAPH
              Comparison of Cumulative Five-Year Total Return Among
                  UniSource Energy, Standard & Poor's 500 Index
                and EEI Index of 64 Investor-Owned Utilities (1)


The  graph  showing  on  the  hard  copy represents the comparison of four 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  1999  to  2004, and the Y-axis shows dollar values from zero
to 250.  The data points are connected by lines  with  the  following  markers:
UniSource Energy Corporation  -  triangles;   S&P 500 - diamonds;   EEI Index -
100 Electrics - squares.  The data points are as follows:


                      1999      2000      2001      2002      2003     2004
                      ----      ----      ----      ----      ----     ----
                                                      
UniSource Energy
 Corporation          $100      $172      $170      $166      $243     $244
S&P 500 Index         $100      $148      $135      $115      $142     $175
EEI Index - 100
 Electrics            $100       $91       $80       $62       $80      $88



(1)      Assumes $100 invested on December 31, 1998  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                   2000          2001          2002          2003          2004
     --------------------------------       -----         ------        ------        -----         -----
                                                                                     
     S&P 500 Total Return Change            -9.10%        -11.89%       -22.10%       28.69%        8.99%
     EEI Index - 64 Electrics Change        47.97%         -8.79%       -14.73%       23.48%       22.84%
     UniSource Energy Change                71.80%         -1.30%        -2.20%       46.72%        0.37%


                                       27



                      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 our  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 2006 annual  meeting of  shareholders,  any such notice
                     must be submitted to the  Corporate  Secretary of UniSource
                     Energy on or before February 20, 2006.

 We must receive     This  requirement  is  separate  and apart  from  the SEC's
your shareholder     requirements  that  a  shareholder  must  meet in order  to
proposals by         have  a   shareholder   proposal   included  in  our  Proxy
December 7, 2005.    Statement.   Shareholder   proposals    intended    to   be
                     presented at our  2006  annual meeting of the  shareholders
                     must  be  received  by us no later than  December  7, 2005,
                     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.

                     Copies  of our  2004  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,
                     Tucson,  Arizona  85714.  You  may  also  obtain  our  SEC
                     filings   through   the   Internet   at   www.sec.gov   or
                     www.UniSourceEnergy.com.


                                         By order of the Board of Directors,
                                         /s/ Catherine A. Nichols
                                         ------------------------
                                         Catherine A.Nichols
                                         Corporate Secretary


                      PLEASE VOTE - YOUR VOTE IS IMPORTANT

                                       28



                      

                                                                      APPENDIX A

                                                                         Amended
                                                                 October 5, 2004


                          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
     no fewer than three independent Directors appointed annually by the Board.
     Directors eligible to serve on the Committee shall be determined in
     accordance with the NYSE Listed Company Manual, Corporate Governance
     Standards for Audit Committees and the Sarbanes-Oxley Act of 2002. The
     Board shall designate one of the Committee members as Chairman of the
     Committee. Each member of the Committee shall be financially literate, and
     at least 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 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. Directors' fees are the
     only compensation an Audit Committee member may receive from the Company.

                                      A-1





5.   COMMITTEE SECRETARY

     The Secretary of the Committee will be the 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.   COMMITTEE PURPOSE

     The Audit Committee is appointed by the Board to assist with Board
     oversight of (1) the integrity of the Company's financial statements (2)
     the Company's compliance with legal and regulatory requirements (3) the 
     independent auditor's qualifications and independence, and, (4) the 
     performance of the Company's internal audit function and independent 
     auditors.

     The Audit Committee must also prepare the report that SEC rules require be
     included in the Company's annual proxy statement.

8.   SPECIFIC DUTIES OF THE COMMITTEE

              Independent Audit:
              ------------------
        (1)   Sole authority to appoint, retain and terminate the Company's
              independent auditor.

        (2)   Sole authority to approve all audit engagement fees and terms, as
              well as all significant, non-audit engagements (in accordance with
              SEC) with the independent auditors.

        (3)   Annually obtain and review a report from the independent auditors
              delineating all relationships between the auditor and the Company
              (to assess the auditors' independence).

        (4)   Review the experience and qualifications of the lead partner of
              the independent auditor.

        (5)   Ensure the rotation of the audit partner(s) as required by law.

        (6)   At least annually, obtain and review a report from the independent
              auditors describing the firm's internal quality control process,
              including any material issues raised by the most recent internal
              quality control review or peer review of the firm, or by any
              inquiry or investigation by governmental, regulatory or
              professional authorities within the past five years, respecting
              one or more independent audits carried out by the firm, and any
              steps taken to deal with any such issues.

                                      A-2


        (7)   Review the results of each independent audit, including any
              qualifications in the independent auditor's opinion, any related
              management letter, and management's response to recommendations
              made by the independent auditor in connection with the audit.

        (8)   Review the annual audited financial statements with management and
              the independent auditor, including management's discussion and
              analysis, major issues regarding accounting and auditing
              principles and practices, as well as the adequacy of internal
              controls. Recommend to the Board, based on such review and
              discussion, whether the audited financial statements should be
              included in the Company's annual report on Form 10-K.

        (9)   Annually review an analysis prepared by management and the
              independent auditor of significant financial reporting issues,
              quality of financial reporting, and judgments made in connection
              with the preparation of the Company's financial statements,
              including an analysis of the effect of alternative GAAP methods on
              the Company's financial statements. Review the procedures employed
              by the Company in preparing published financial statements and
              related management commentaries.

        (10)  Review with management and the independent auditor the Company's
              quarterly financial statements prior to the filing of its Form
              10-Q, including management's discussion and analysis and the
              results of the independent auditors' review of the quarterly
              financial statements (SAS 90). Note: This can be performed by a
              member of the Audit Committee.

        (11)  Discuss annually with the independent auditor the required
              communications contained within Statement on Auditing Standards
              No. 61 relating to the conduct of the audit.

        (12)  Discuss with the independent auditor material issues on which the
              national office of the independent auditor was consulted by the
              Company's audit team.

        (13)  Meet with the independent auditor prior to the audit to discuss
              the planning and staffing of the audit.

              Internal Audit:
              ---------------
        (14)  Review the appointment, replacement, reassignment or dismissal of
              the Company's General Auditor.

        (15)  Review and approve the internal audit department charter, annual
              audit plan and the audit methodology.

        (16)  Review management and General Auditor reports submitted to the
              Committee that are material to the Company as a whole, and
              management's response to those reports.

        (17)  Annually review the General Auditor's Summary of Officer's Annual
              Travel and Entertainment expense schedule. Include in this review
              a discussion of perquisites.

                                      A-3



              Miscellaneous:
              --------------
        (18)  Review earnings press release as well as financial information and
              earnings guidance provided to analysts and ratings agencies.

        (19)  Review quarterly updates from management on material litigation.

        (20)  Periodically review with management, the Company's policies on
              major financial risk exposure, and the measures taken to reduce
              such risk.

        (21)  Annually review the Company's Corporate Code of Conduct and
              compliance therewith.

        (22)  Establish and maintain procedures for the confidential, anonymous
              submission by employees of the Company of concerns regarding
              accounting or auditing matters.

        (23)  Establish guidelines for the Company's hiring of employees or
              former employees of the independent auditor.

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

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

        (26)  Review disclosures made by the Company's CEO and CFO during their
              certification process for the Form 10-K and Form 10-Q about any
              significant deficiencies in the design or operation of internal
              controls or material weaknesses therein and any fraud involving
              management or other employees who have a significant role in the
              Company's internal controls.

9.   EXECUTIVE SESSION

     Meet quarterly with management, the General Auditor and the independent
     auditor in separate executive sessions.

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. Additionally, set the annual compensation for the General
     Auditor in conjunction with the Company's Chief Executive Officer.

                                      A-4





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 Audit Committee shall have the authority to retain special legal,
     accounting or other consultants to advise the Committee. The Audit
     Committee has full discretion to meet with individuals within or outside
     the Company.

                                      A-5




                                                                      APPENDIX B
                                                              FORM OF PROXY CARD


                                UNISOURCE ENERGY

                              YOUR VOTE IS IMPORTANT
                         VOTE BY TELEPHONE OR INTERNET
                         24 HOURS A DAY - 7 DAYS A WEEK
 
 
INTERNET
--------
https://www.proxyvotenow.com/uns


- Go to the website address listed above.

- Have your proxy card ready.

- Follow the simple instructions that appear on
  your computer screen.


OR


TELEPHONE
---------
1-866-358-4695

- Use any touch-tone telephone.

- Have your proxy card ready.

- 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.



You can vote your shares by telephone, the Internet, mail or in person at
the Annual Shareholders' Meeting.  Your telephone or Internet 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 to mail your proxy card.


For Shareholders who have elected to receive UniSource Energy's Proxy Statement
and Annual Report electronically you can now view the 2005 Annual Meeting
materials on the Internet by pointing your browser to 
http://www.UnisourceEnergy.com.

1-866-358-4695
CALL TOLL-FREE TO VOTE
-------------------------------
THE INTERNET AND TELEPHONE VOTING FACILITIES WILL BE AVAILABLE UNTIL 5:00 P.M.
E.S.T. ON THURSDAY, MAY 5, 2005.


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



                         (FORM OF PROXY CARD - FRONT)


Please Sign, Date and Return                             [X]
the Proxy Promptly Using the                  Votes MUST be indicated (x)
Enclosed Envelope.                            in Black or Blue Ink.


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-James S. Pignatelli, 02-Lawrence J. Aldrich, 03-Larry W. Bickle,
          04-Elizabeth T.Bilby, 05-Harold W. Burlingame, 06-John L. Carter,
          07-Robert A. Elliott, 08-Kenneth Handy, 09-Warren Y. Jobe

(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.                      [ ]


                                                  To change your address,
                                                  please mark this box.     [ ]


                                                  To include any comments,
                                                  please mark this box.     [ ]


                                            -----------------------------------
                                                  SCAN LINE
                                            -----------------------------------


                                       PLEASE SIGN EXACTLY AS YOUR 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 2004
                                       Annual Report.

                                       Date      Shareholder sign here

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


                                       Date      Co-Owner sign here
                                       ----------------------------------------


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

                                      B-1




[A street map showing the location         Marriott University Park Hotel
of the Annual Shareholders' Meeting        880 East Second Street
is set forth in this area.]                Tucson, AZ 85719

                                           520.792.4100   Hotel Direct
                                           800.228.9290   Reservations
 
                                           TRANSPORTATION
                                           From Tucson International Airport
 
                                           Shuttle Service
                                           Arizona Stagecoach
                                           Call 520-889-1000

                                           Automobile - Interstate 10 to
                                           Speedway exit
 
 
DEAR SHAREHOLDERS:
   If you previously elected to view the UniSource Energy Corporation Proxy
Statements and Annual Reports over the Internet instead of receiving copies in
the mail, you can now access the Proxy Statement for the 2005 Annual
Shareholders' Meeting and the 2004 Annual Report on the Internet through the
following address: http://www.UniSourceEnergy.com.  You can vote your shares by
telephone, the Internet, Mail or in Person at the Annual Shareholders' Meeting.
See the Proxy Statement and the enclosed proxy card for further information
about voting procedures.

   If you would like a paper copy of the Proxy Statement and Annual Report,
UniSource Energy will provide a copy to you upon request.  To obtain a copy of
these documents, please call 866-275-4867.
-------------------------------------------------------------------------------



                         (FORM OF PROXY CARD - BACK)


                                UNISOURCE ENERGY

This Proxy is Solicited on Behalf of the Board of Directors of the Company
   for the Annual Shareholders' Meeting to be held Friday, May 6, 2005.


                                   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 undersigned all shares of Common Stock which the undersigned is
entitled to vote at the Annual Shareholders' Meeting scheduled to be held at
the Marriott University Park Hotel, 880 East Second Street, Tucson, Arizona,
on Friday, May 6, 2005, and at any adjournments or postponements thereof,
with all powers the undersigned would possess if personally present 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 undersigned shareholder. IF NO DIRECTION IS MADE,
THIS PROXY WILL BE VOTED "FOR" Proposal 1.

                                      B-2