FOR IMMEDIATE RELEASE
Apr 13 2010 12:00:00:000AM
Media Contact: Joe Salkowski, (520) 884-3625
Financial Analyst Contact: Jo Smith, (520) 884-3650

UniSource Energy Vice President Steven W. Lynn Named Chief Customer Officer

Tucson, Ariz. " UniSource Energy Vice President Steven W. Lynn has been named the company's Chief Customer Officer and will oversee its relationships with customers of utility subsidiaries Tucson Electric Power and UniSource Energy Services.

Lynn, 63, has added responsibility for the company's customer service efforts to his oversight of communications, government relations and community service operations. He will work to ensure that UniSource Energy's operations remain focused on meeting customers' needs in an evolving energy marketplace.

"Steve will represent customers' interests throughout UniSource Energy, making sure that we maintain and improve our historically strong commitment to the businesses and residents who rely on our service," said Paul Bonavia, Chairman, President and CEO of UniSource Energy (NYSE: UNS).

Lynn, who had served as Vice President of Communications and Government Relations since January 2003, said his position requires more than continuing the company's strong performance on customer satisfaction surveys.

"Our pursuit of renewable energy and energy efficiency goals and the deployment of smart-grid technology cannot succeed unless our current relationship with customers evolves," Lynn said. "My job is to actively advocate for customers to make sure that relationship generates real dividends for all parties."

UniSource Energy is a Tucson, Arizona-based company with consolidated assets of approximately $3.5 billion. UniSource Energy's primary subsidiaries include Tucson Electric Power Company, which serves more than 400,000 customers in southern Arizona, and UniSource Energy Services, provider of natural gas and electric service for about 235,000 customers in northern and southern Arizona.For more information about UniSource Energy and its subsidiaries, visit uns.com.