UNS Energy Corp. (NYSE: UNS) plans to release its financial results for the second quarter of 2012 on Monday, July 30, 2012, before the market opens. The release will be followed by a conference call on Monday, July 30 at 11 a.m. ET. 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. Dial-in number: (877) 582-0446Reference code: 13237677 The conference call also can be heard live online at uns.com. The webcast will be available for replay for seven days. Replay number: (855) 859-2056Reference code: 13237677 UNS Energy is a Tucson, Arizona-based company with consolidated assets of approximately $4.0 billion. UNS Energy's primary subsidiaries include Tucson Electric Power, which serves more than 404,000 customers in southern Arizona; and UniSource Energy Services, provider of natural gas and electric service for about 239,000 customers in northern and southern Arizona. For more information about UNS Energy and its subsidiaries, visit uns.com.