form8-k.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

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

DATE OF REPORT
(DATE OF EARLIEST EVENT REPORTED): September 5, 2008

Commission
File Number
  
Registrant; State of Incorporation;
Address; and Telephone Number
  
IRS Employer
Identification
Number
         
1-13739
  
UNISOURCE ENERGY CORPORATION
  
86-0786732
   
(An Arizona Corporation)
One South Church Avenue, Suite 100
Tucson, AZ 85701
(520) 571-4000
    
         
1-5924    TUCSON ELECTRIC POWER COMPANY   86-0062700
   
(An Arizona Corporation)
One South Church Avenue, Suite 100
Tucson, AZ 85701
(520) 571-4000
    

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
 
 
Item 8.01 Other Events
 
The Board of Directors of UniSource Energy Corporation (UniSource Energy) has initiated a process for identification of potential successors for James S. Pignatelli, Chairman, President and Chief Executive Officer of UniSource Energy and its affiliates Tucson Electric Power Company and UniSource Energy Services.  Mr. Pignatelli has served as Chairman, President and Chief Executive Officer since 1998 and will reach the age of 65 in October 2008.  Neither UniSource Energy nor Mr. Pignatelli has determined a schedule for a successor to be named.
 
 
 
SIGNATURES
 
 
 
 
 
            Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
 
 
 
 
 
 
     
     
Date: September 5, 2008
  
UNISOURCE ENERGY CORPORATION
——————————————————
(Registrant)
 
 
/s/   Kevin P. Larson
   
——————————————————
Senior Vice President and Principal
Financial Officer
 
 
Date: September 5, 2008
  
TUCSON ELECTRIC POWER COMPANY
——————————————————
(Registrant)
 
 
/s/   Kevin P. Larson
   
——————————————————
Senior Vice President and Principal
Financial Officer