Company Overview
UniSource Energy Services (UES) provides safe, reliable energy to more than 243,000 customers across Arizona. Our natural gas service reaches about 150,000 customers in northern and southern Arizona, while our electric service reaches more than 93,000 customers in Mohave and Santa Cruz Counties.

UES and its sister company, Tucson Electric Power, are among a family of utilities owned by Fortis, Canada’s largest investor-owned gas and electric utility holding company. Fortis completed an acquisition of UNS Energy Corporation, TEP’s and UES’ parent company, in August 2014.
Company Summary
UNS Electric
Number of Employees
500 or more
(877) 837-4968
88 E Broadway Blvd
Tucson, AZ