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): May 4, 2006

 

 

 

IRS Employer

 

Commission

Registrant; State of Incorporation;

Identification

 

File Number

Address; and Telephone Number

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 2.02 Results of Operations and Financial Condition

 

On May 4, 2006, UniSource Energy Corporation (“UniSource Energy”) issued a press release announcing earnings for the quarter ended March 31, 2006 for UniSource Energy and Tucson Electric Power Company. A copy of the press release is attached hereto as Exhibit 99.

Item 9.01 Financial Statements and Exhibits

 

Exhibit 99

UniSource Energy Corporation Press Release, dated
May 4, 2006

 

 

 

 

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: May 4, 2006

 

 

UNISOURCE ENERGY CORPORATION

——————————————————

(Registrant)

 

 

/ s / Kevin P. Larson

 

 

——————————————————

Senior Vice President and Principal

Financial Officer

 

 

Date: May 4, 2006

 

 

TUCSON ELECTRIC POWER COMPANY

——————————————————

(Registrant)

 

 

/ s / Kevin P. Larson

 

 

——————————————————

Senior Vice President and Principal

Financial Officer