SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  SCHEDULE 13G
                                 (Rule 13d-102)


             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)

                                (Amendment No. 1)


                          Unisource Energy Corp. (UNS)
--------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    909205106
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                December 31, 2005
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


     Check the  appropriate  box to  designate  the rule  pursuant to which this
Schedule is filed:

          [_]  Rule 13d-1(b)

          [X]  Rule 13d-1(c)

          [_]  Rule 13d-1(d)


----------
     The  information  required in the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 or otherwise  subject to the  liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



CUSIP No.    909205106
            ---------------------


1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Zimmer Lucas Capital, LLC

2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [X]

3.   SEC USE ONLY



4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.   SOLE VOTING POWER

     0

6.   SHARED VOTING POWER

     501,300

7.   SOLE DISPOSITIVE POWER

     0

8.   SHARED DISPOSITIVE POWER

     501,300

9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     501,300

10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     1.44%

12.  TYPE OF REPORTING PERSON*

     00



CUSIP No.    909205106
             ---------------------


1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Stuart J. Zimmer

2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [X]

3.   SEC USE ONLY



4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.   SOLE VOTING POWER

     0

6.   SHARED VOTING POWER

     501,300

7.   SOLE DISPOSITIVE POWER

     0

8.   SHARED DISPOSITIVE POWER

     501,300

9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     501,300

10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     1.44%

12.  TYPE OF REPORTING PERSON*

     IN



CUSIP No.    909205106
             ---------------------


1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Craig M. Lucas

2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [X]

3.   SEC USE ONLY



4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.   SOLE VOTING POWER

     0

6.   SHARED VOTING POWER

     501,300

7.   SOLE DISPOSITIVE POWER

     0

8.   SHARED DISPOSITIVE POWER

     501,300

9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     501,300

10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     1.44%

12.  TYPE OF REPORTING PERSON*

     IN



CUSIP No.   909205106
            ---------------------


Item 1(a).  Name of Issuer:


            Unisource Energy Corp. (UNS)
            --------------------------------------------------------------------

Item 1(b).  Address of Issuer's Principal Executive Offices:

            One South Church Avenue, Suite 100
            Tucson, Arizona 85701
            --------------------------------------------------------------------

Item 2(a).  Name of Person Filing:

            Zimmer Lucas Capital, LLC
            Stuart J. Zimmer
            Craig M. Lucas
            --------------------------------------------------------------------

Item 2(b).  Address of Principal Business Office, or if None, Residence:

            45 Broadway, 28th Floor
            New York, New York 10006
            --------------------------------------------------------------------

Item 2(c).  Citizenship:

            Zimmer Lucas Capital, LLC - Delaware
            Stuart J. Zimmer - United States of America
            Craig M. Lucas - United States of America
            --------------------------------------------------------------------

Item 2(d).  Title of Class of Securities:

            Common Stock
            --------------------------------------------------------------------

Item 2(e).  CUSIP Number:


            909205106
            --------------------------------------------------------------------


Item 3.     If This Statement  is Filed  Pursuant to  Rule 13d-1(b), or 13d-2(b)
            or (c), Check Whether the Person Filing is a:

     (a)  [_]  Broker or dealer registered under Section 15 of the Exchange Act.

     (b)  [_]  Bank as defined in Section 3(a)(6) of the Exchange Act.

     (c)  [_]  Insurance  company as defined in Section 3(a)(19) of the Exchange
               Act.

     (d)  [_]  Investment  company  registered under Section 8 of the Investment
               Company Act.

     (e)  [_]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [_]  An employee  benefit plan or endowment  fund in  accordance  with
               Rule 13d-1(b)(1)(ii)(F);

     (g)  [_]  A parent  holding  company or control  person in accordance  with
               Rule 13d-1(b)(1)(ii)(G);

     (h)  [_]  A savings  association  as defined in Section 3(b) of the Federal
               Deposit Insurance Act;

     (i)  [_]  A  church  plan  that  is  excluded  from  the  definition  of an
               investment  company  under  Section  3(c)(14)  of the  Investment
               Company Act;

     (j)  [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.  Ownership.

     Provide  the  following  information  regarding  the  aggregate  number and
percentage of the class of securities of the issuer identified in Item 1.

     (a)  Amount beneficially owned:

          Zimmer Lucas Capital, LLC - 501,300
          Stuart J. Zimmer - 501,300
          Craig M. Lucas - 501,300
          ----------------------------------------------------------------------

     (b)  Percent of class:

          Zimmer Lucas Capital, LLC - 1.44%
          Stuart J. Zimmer - 1.44%
          Craig M. Lucas - 1.44%
          ----------------------------------------------------------------------

     (c)  Number of shares as to which such person has:

            Zimmer Lucas Capital, LLC

          (i)   Sole power to vote or to direct the vote               0
                                                        _______________________,


          (ii)  Shared power to vote or to direct the vote             501,300
                                                          _____________________,


          (iii) Sole power to dispose or to direct the                 0
                disposition of                            _____________________,


          (iv)  Shared power to dispose or to direct the               501,300
                disposition of                            _____________________.


          Stuart J. Zimmer:

          (i)   Sole power to vote or to direct the vote               0
                                                        _______________________,


          (ii)  Shared power to vote or to direct the vote             501,300
                                                          _____________________,


          (iii) Sole power to dispose or to direct the                 0
                disposition of                            _____________________,


          (iv)  Shared power to dispose or to direct the               501,300
                disposition of                            _____________________.

          Craig M. Lucas:

          (i)   Sole power to vote or to direct the vote               0
                                                        _______________________,


          (ii)  Shared power to vote or to direct the vote             501,300
                                                          _____________________,


          (iii) Sole power to dispose or to direct the                 0
                disposition of                            _____________________,


          (iv)  Shared power to dispose or to direct the               501,300
                disposition of                            _____________________.

Item 5.  Ownership of Five Percent or Less of a Class.

     If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
five percent of the class of securities check the following [X].

         Zimmer Lucas Capital, LLC
         Stuart J. Zimmer
         Craig M. Lucas
         -----------------------------------------------------------------------


Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.

     If any other person is known to have the right to receive or the power to
direct the receipt of dividends from, or the proceeds from the sale of, such
securities, a statement to that effect should be included in response to this
item and, if such interest relates to more than five percent of the class, such
person should be identified.  A listing of the shareholders of an investment
company registered under the Investment Company Act of 1940 or the beneficiaries
of employee benefit plan, pension fund or endowment fund is not required.


         Not applicable
         -----------------------------------------------------------------------

Item 7.  Identification and  Classification of the Subsidiary Which Acquired the
         Security  Being  Reported on by the Parent  Holding  Company or Control
         Person.

     If a parent holding company or Control person has filed this schedule,
pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an
exhibit stating the identity and the Item 3 classification of the relevant
subsidiary.  If a parent holding company or control person has filed this
schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating
the identification of the relevant subsidiary.


         Not applicable
         -----------------------------------------------------------------------

Item 8.  Identification  and  Classification  of Members of the Group.

     If a group has filed this schedule pursuant to s.240.13d-1(b)(1)(ii)(J), so
indicate under Item 3(j) and attach an exhibit stating the identity and Item 3
classification of each member of the group. If a group has filed this schedule
pursuant to s.240.13d-1(c) or s.240.13d-1(d), attach an exhibit stating the
identity of each member of the group.


         Not applicable
         -----------------------------------------------------------------------

Item 9.  Notice of Dissolution of Group.

     Notice of dissolution of a group may be furnished as an exhibit stating the
date of the dissolution and that all further filings with respect to
transactions in the security reported on will be filed, if required, by members
of the group, in their individual capacity.  See Item 5.


          Not applicable
         -----------------------------------------------------------------------

Item 10.  Certifications.

          By signing below I certify that, to the best of my knowledge and
          belief, the securities referred to above were not acquired and are not
          held for the purpose of or with the effect of changing or influencing
          the control of the issuer of the securities and were not acquired and
          are not held in connection with or as a participant in any transaction
          having such purpose or effect.


                                    SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


                                                  February 14, 2006
                                        ----------------------------------------
                                                        (Date)

                                         Zimmer Lucas Capital, LLC*

                                         By:  /s/ Stuart J. Zimmer
                                         ---------------------------------------
                                             Stuart J. Zimmer
                                             Managing Member


                                         By:  /s/  Craig M. Lucas
                                         ---------------------------------------
                                             Craig M. Lucas
                                             Managing Member


                                              /s/   Stuart J. Zimmer
                                              ----------------------------------
                                                    Stuart J. Zimmer *


                                              /s/  Craig M. Lucas
                                              ----------------------------------
                                                    Craig M. Lucas*

Note. Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
for whom copies are to be sent.

Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).

* The Reporting Persons disclaim beneficial ownership in the Shares reported
herein except to the extent of their pecuniary interest therein.


                                                           Exhibit A


                                    AGREEMENT

     The undersigned agree that this Schedule 13G, Amendment No. 1 dated
February 14, 2006 relating to the Common Stock of Unisource Energy Corp. (UNS)
shall be filed on behalf of the undersigned.



                                         Zimmer Lucas Capital, LLC*

                                         By:  /s/ Stuart J. Zimmer
                                         ---------------------------------------
                                           Stuart J. Zimmer
                                           Managing Member


                                         By:  /s/ Craig M. Lucas
                                         ---------------------------------------
                                           Craig M. Lucas
                                           Managing Member


                                              /s/  Stuart J. Zimmer
                                         ---------------------------------------
                                                   Stuart J. Zimmer*


                                             /s/   Craig M. Lucas
                                         ---------------------------------------
                                                   Craig M. Lucas*

SK 02192 0001 643465