Uns Energy (UNS) 10-Q 2007 Q3 Quarterly report

Exhibit 32

UNISOURCE ENERGY CORPORATION

TUCSON ELECTRIC POWER COMPANY

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STATEMENTS OF CORPORATE OFFICERS

(Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)

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Each of the undersigned, James S. Pignatelli, Chairman of the Board, President and Chief Executive Officer of UniSource Energy Corporation and Tucson Electric Power Company (each a “Company”), and Kevin P. Larson, Senior Vice President, Treasurer and Chief Financial Officer of each Company, hereby certifies, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that each Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained therein fairly presents, in all material respects, the financial condition and results of operations of such Company.

November 2, 2007

/s/ James S. Pignatelli

James S. Pignatelli
Chairman of the Board, President and
Chief Executive Officer
UniSource Energy Corporation
Tucson Electric Power Company

/s/ Kevin P. Larson

Kevin P. Larson
Senior Vice President, Treasurer and
Chief Financial Officer
UniSource Energy Corporation
Tucson Electric Power Company