UNS Energy Corporation

An Energy Leader

UNS Energy generates value through the sound, safe and strategic operation of our utility subsidiaries, Tucson Electric Power (TEP) and UniSource Energy Services (UES). Our energy reaches more than 630,000 customers across Arizona, a state known for sun-drenched desert vistas and an attractive business climate.

UNS Energy is developing bright solutions to the long-term challenges facing our industry. We carry out our utility operations with great respect for the environment while promoting efficiency and pursuing a future powered by clean, sustainable resources. We are committed to supporting our community through our award-winning employee volunteer program and enthusiastic corporate philanthropy.