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): March 20, 2013

Commission File Number	Registrant; State of Incorporation; Address; and Telephone Number	IRS Employer Identification Number
1-13739	UNS ENERGY CORPORATION	86-0786732
	(An Arizona Corporation) 88 E. Broadway Boulevard Tucson, AZ 85701 (520) 571-4000
1-5924	TUCSON ELECTRIC POWER COMPANY	86-0062700
	(An Arizona Corporation) 88 E. Broadway Boulevard 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:

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

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

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

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure

UNS Energy Corporation is making a presentation in Las Vegas, NV on March 20, 2013. The presentation will be available at http://ir.uns.com/events.cfm beginning on March 20, 2013. The presentation is attached hereto as Exhibit 99.1.

Item 9.01 Financial Statements and Exhibits

Exhibit 99.1 UNS Energy Corporation Presentation.

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: March 20, 2013	UNS ENERGY CORPORATION (Registrant) /s/ Kevin P. Larson
	Senior Vice President and Chief Financial Officer
Date: March 20, 2013	TUCSON ELECTRIC POWER COMPANY (Registrant) /s/ Kevin P. Larson
	Senior Vice President and Chief Financial Officer