FOR IMMEDIATE RELEASE
Mar 21 2011 12:00:00:000AM
Media Contact: Joe Salkowski, (520) 884-3625
Financial Analyst Contact: Jo Smith, (520) 884-3650

David G. Hutchens Named Executive Vice President of UniSource Energy

Tucson, Ariz. – David G. Hutchens has been named Executive Vice President of UniSource Energy Corporation (NYSE: UNS) and subsidiaries Tucson Electric Power (TEP) and UniSource Energy Services (UES), making him the company's second highest ranking executive.

Hutchens, 44, launched a significant expansion of the company's renewable energy and conservation programs in his previous post as Vice President of Energy Efficiency and Resource Planning.

"Dave's efforts have helped establish UniSource Energy as an industry leader in energy efficiency and renewable power, areas that will prove critical to our future success," said Paul Bonavia, UniSource Energy's Chairman, President and CEO. "He's a key component of our company's strong leadership team."

Hutchens served five years in the U.S. Navy and worked as an engineer before joining TEP as an energy analyst in July 1995. He later held management positions overseeing wholesale energy sales and, in January 2007, was named Vice President of Wholesale Energy and UNS Gas " an operating subsidiary of UES. He became vice president of Energy Efficiency and Resource Planning in May 2009.

"Dave Hutchens has been an important part of UniSource Energy's success, and he's going to play a critical role in its future," said Robert A. Elliott, Lead Director of UniSource Energy's Board of Directors. "He's a proven leader whose intelligence, hard work and creativity will be an asset to our company and our customers for many years to come."

UniSource Energy is a Tucson, Arizona-based company with consolidated assets of approximately $3.8 billion. UniSource Energy's primary subsidiaries include Tucson Electric Power, which serves more than 402,000 customers in southern Arizona, and UniSource Energy Services, provider of natural gas and electric service for about 237,000 customers in northern and southern Arizona. For more information, visit uns.com.