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UNS Energy Corporation

UNS Energy is the Tucson, Arizona-based parent-company of Tucson Electric Power (TEP) and UniSource Energy Services (UES), utilities that provide safe, reliable energy to more than 670,000 customers. In 2017, the companies met a peak daytime natural gas demand of 105 TJ and a peak electricity demand of 3,378 MW.

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2,024

employees

156,000

natural gas customers

518,000

electricity customers

  • 2,770 MW generating capacity
  • Total renewable energy portfolio, including resources secured through purchase agreements: 685 MW
  • Regulated by Arizona Corporation Commission
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Projects

New Generation to Support Increased Renewable Resources

Tucson Electric Power is planning to install efficient natural gas-fired reciprocating internal combustion engine (RICE) generators at its largest local power plant. The flexible, responsive units can ramp up and down quickly to support the company’s increased use of intermittent solar and wind resources.

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Community

UNS Energy Volunteerism Option 1

A Quarter Century of Volunteerism

This year marks the 25th anniversary of the Community Action Team (CAT), the employee volunteer organization at Tucson Electric Power. CAT volunteers have donated 740,000 hours over the past quarter century to hundreds of nonprofit groups and charitable projects, powering the company’s nationally recognized community service program.
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