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UNS Energy Corporation

UNS Energy is a vertically integrated utility services holding company, headquartered in Tucson, Arizona, consisting primarily of three wholly owned subsidiaries: Tucson Electric Power, UNS Electric and UNS Gas. It is engaged through its subsidiaries in the regulated electric generation and energy delivery business, primarily in the State of Arizona, serving approximately 550,000 electricity customers and 169,000 natural gas customers. In 2023, the companies met a peak natural gas demand of 115 TJ and a peak electricity demand of 3,314 MW.

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2,061

employees

169,000

natural gas customers

550,000

electricity customers

  • 3,408 MW generating capacity
  • Regulated by the Arizona Corporation Commission
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Projects

Oso Grande Wind Farm 

TEP is making steady advances on its energy transition. Its 250-MW Oso Grande wind project will generate enough power each year to serve the annual electric needs of nearly 100,000 homes. 

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Community

UNS Energy Volunteerism Option 1

A culture of community investment

Tucson Electric Power and UniSource are dedicated to improving the quality of life in the communities we serve, beyond providing safe, reliable power. Together with friends and family, our employees assisted more than 300 local agencies and provided nearly 16,000 hours of volunteer service in 2022.

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TEP News   UniSource News 
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