UniSource Energy Services
PO Box 711 , Tucson AZ

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.

UniSource Energy Services provides safe, reliable energy to more than 249,000 customers across Arizona. Our natural gas service reaches about 154,000 customers in northern and southern Arizona, while our electric service reaches more than 95,000 customers in Mohave and Santa Cruz counties.

• UES provides natural gas service in Santa Cruz, Mohave, Yavapai, Coconino and Navajo counties.
• UES provides electric service in Mohave and Santa Cruz counties. Our service territory in Mohave County is located in the northwest corner of the state. It includes both Kingman, located in the high desert central portion of the county, and Lake Havasu City, situated in the low desert along the Colorado River.Our Santa Cruz County service territory serves customers in the south central portion of the state, approximately 60 miles south of Tucson adjacent to the U.S. border with Mexico. We provide service to most of the county, including Nogales - its largest city.
• Fortis is the largest investor-owned electric and gas distribution utility in Canada. Its regulated utilities account for approximately 93 percent of its total assets and serve more than 3 million customers across Canada and in the United States and the Caribbean. Fortis owns non-regulated hydroelectric generation assets in Canada, Belize and Upstate New York. For more information, visit fortisinc.com.

Management Team

UniSource Energy Services’ daily operations are supervised by local managers who are committed to providing safe, reliable service to their communities. Electric service is provided through a UES subsidiary called UNS Electric, Inc., while natural gas service is provided through a subsidiary called UNS Gas, Inc. These local efforts are overseen and supported by executives at UES’ Tucson-based parent company, UNS Energy Corporation, and sister company Tucson Electric Power (TEP).

Our renewable resources

UniSource Energy Services has an expanding portfolio of clean renewable resources to help provide safe, reliable and affordable electric service to our communities.  UniSource’s renewable resources produced more than 172,000 megawatt hours (MWh) of clean power in 2017. That’s more than 10 percent of our total 2017 retail sales, surpassing Arizona’s Renewable Energy Standard requirement of 7 percent for the year.  We will continue to invest in innovative, cost-effective renewable programs that offer benefits for all customers.

Reserve your solar power blocks

The Bright Arizona Community Solar Program offers an easy and affordable way to meet your electric needs with locally generated solar power. As a UES customer, you now have the opportunity to purchase solar power in "blocks" of 150 kilowatt hours (kWh) per month.  You can buy some or all of your power through the program, reducing or eliminating your energy from conventional resources. 

Features and benefits

• No up-front expenses or equipment maintenance costs
• Renewable energy option for renters and those customers whose rooftops are shaded by trees or nearby buildings
• Protection offered against future energy cost increases
• Surcharge exemption for solar energy purchases on renewable energy, fuel and purchased power
• Minimized carbon footprint and reliance on fossil fuels
• Clean, green renewable energy for an affordable price

Minimal cost

Solar power costs more than conventional energy derived from fossil-fueled power plants, so participating in the program will increase your electric bill. Each block replaces the charges for an equivalent amount of conventional power at a rate that currently adds $3.00 to your monthly bill.  Program rates must be paid in full each month regardless of actual energy consumption. If the solar energy purchased through the program exceeds actual usage during a monthly billing period, the excess is carried forward to the next billing period as a credit. Any credit remaining after the September billing period will be paid in full as a credit on the next bill.