Tucson Electric Power 10-Q 2014 Q2 Quarterly report

Exhibit 32(a)

UNS ENERGY CORPORATION

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STATEMENTS OF CORPORATE OFFICERS

(Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)

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Each of the undersigned, David G. Hutchens, President and Chief Executive Officer of UNS Energy Corporation (the “Company”), and Kevin P. Larson, Senior Vice President, Chief Financial Officer and Treasurer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014, 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 the Company.

July 29, 2014

/s/ David G. Hutchens

David G. Hutchens

President and

Chief Executive Officer

(Principal Executive Officer)

UNS Energy Corporation

/s/ Kevin P. Larson

Kevin P. Larson

Senior Vice President,

Chief Financial Officer and Treasurer

(Principal Financial Officer)

UNS Energy Corporation