Red Horse Solar and Wind

A Cleaner, Greener Grid

Tucson Electric Power has a continually expanding portfolio of wind and solar systems that help us provide affordable, reliable and sustainable energy service.

Our investment in clean energy resources will continue as we reduce our reliance on coal. TEP added more than 450 megawatts (MW) of new wind and solar capacity in 2021, more than doubling our total renewable energy portfolio to more than 1,000 megawatts (MW). And in 2022, we built a new 12.5 MW solar array designed for customers who want to go solar through TEP’s GoSolar Home program. We're also investing in energy storage, fast-ramping natural gas generators and other facilities needed to support new renewable resources.

TEP, recognized worldwide as an industry leader in renewable energy, will continue to invest in innovative, cost-effective renewable programs that offer benefits for all customers.

Solar Resource Capacity

TEP’s community-scale solar resources have a combined capacity of nearly more than 300 megawatts. That’s enough clean, green energy to power more than about 69,000 homes for a year.

Supporting solar for everyone

TEP is working to provide customers with more opportunities to go solar.

The TEP GoSolar Shares program allows residential and business customers to cover some or all of their electrical needs by purchasing locally generated solar power.

Our TEP GoSolar Home program, currently at capacity, allowed homeowners to get all their power from a local TEP solar array for a fixed price that won’t change for a decade.

TEP also developed hundreds of rooftop solar arrays through its innovative TEP Residential Solar Program, a pilot project that provided fixed-price electric service using solar arrays installed on customers’ homes.

Considering solar for your home or business? Here are important questions to consider. Or, click here to learn more about connecting to TEP’s local distribution system.

Innovation in solar & other renewable resources

TEP, which built its first large solar array more than a decade ago, understands the importance of innovation in advancing renewable energy. We’re installing innovative energy storage systems to help enhance the resiliency of the local electric gird and support the expansion of solar power resources.

The Solar Zone—a joint venture of TEP, the University of Arizona and solar developers—is the largest multi-technology solar testing, evaluation and demonstration site in the United States. The Solar Zone is located at the University of Arizona Science and Technology Park in Tucson.

Researchers and scientists in the UA Renewable Energy Network work closely with TEP personnel to test solar panels, forecast weather, experiment with different solar technologies and develop batteries for storing energy.

Tucson Electric Power: Improving solar productivity

Improving solar productivity

Learn how TEP personnel monitor solar sites throughout Arizona.
Tucson Electric Power: Renewable Site Map

Renewable Site Map

View a map of our expanding portfolio of clean renewable resources.

TEP’s renewable energy portfolio

Project Name In Service Location Capacity (MW)
TEP Owned (Utility Scale)
Raptor Ridge 2022 Tucson 12.5
Fort Huachuca Phase II 2017 Fort Huachuca, Sierra Vista 4.4
White Mountain Solar 2014 Springerville 8.5
Fort Huachuca Phase I 2014 Fort Huachuca, Sierra Vista 13.6
Solon Prairie Fire 2012 Old Vail & Valencia, Tucson 4.5
UASTP II 2011 UA Tech Park * 4.5
UASTP I 2010 UA Tech Park * 1.5
Springerville Expansion 2 2010 Springerville 0.62
Springerville Expansion 1 2010 Springerville 1.0
Springerville 2004 Springerville 3.7
Total Owned: 54.5
Power Purchase (Utility Scale)
Wilmot Energy Center 2021 Tucson 100
Iron Horse 2017 UA Tech Park 2
Avalon Solar II 2016 Sahuarita 16
Red Horse Solar 2015 Willcox 41
Avalon Solar 2014 Sahuarita 29
Cogenra 2014 UA Tech Park * 1
Valencia Solar 2013 Valencia & Interstate 10, Tucson 10
E.On Tech Park 2012 UA Tech Park * 4.8
Gato Montes Solar 2012 UA Tech Park * 5
Avra Valley 2012 Marana 25
Picture Rocks 2012 Marana 20
Amonix UASTP Solar Power Generation Station 2011 UA Tech Park * 2
Total Power Purchase: 256
Total Utility Scale Solar: 310.2
Rooftop Solar Systems
Residential 261.6 AC
Commercial 149.5 AC
Total Rooftop Solar Systems: 411.1
Total Solar: 721.3
TEP Owned (Utility Scale)
Oso Grande 2021 Southwest NM 250
Power Purchase (Utility Scale)
Borderlands Wind 2021 Catron County, NM 99
Red Horse Wind 2015 Willcox 30
Macho Springs 2011 Deming, NM 50.4
Total Wind: 429.4
Total Renewable Resources: 1,151 MW AC