EX-23 2 ex23.htm CONSENT BY PWC LLP Consent by PWC LLP
Exhibit 23
 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-53333 and No. 333-53309) of UniSource Energy Corporation of our report dated June 26, 2006 relating to the financial statements of the Tucson Electric Power Company 401 (k) Plan, which appears in this Form 11-K.

/s/ PricewaterhouseCoopers LLP
 
PricewaterhouseCoopers LLP
Chicago, IL
June 26, 2006