UNS Energy Corporation (NYSE: UNS) plans to release its financial results for the second quarter of 2013 on Tuesday, July 30, 2013, before the market opens. The release will be followed by a conference call on Tuesday, July 30 at 12 p.m. EDT. The earnings release and supplemental information will be available online at uns.com. To participate in the call, please dial in five to 10 minutes prior to the start. A reference code is not necessary to access the live call. Dial-in number: (800) 695-3244 The conference call also can be heard live online at uns.com. A telephone replay will be available for seven days. Replay number: (800) 633-8284Reference code: 21668731 UNS Energy Corporation is a Tucson, Arizona-based company with consolidated assets of approximately $4 billion. UNS Energy’s primary subsidiaries include Tucson Electric Power, which serves approximately 408,000 customers in southern Arizona; and UniSource Energy Services, provider of natural gas and electric service for approximately 242,000 customers in northern and southern Arizona. For more information about UNS Energy and its subsidiaries, visit uns.com.