Technicians for Sustainability

Technicians for Sustainability has been designing and installing solar energy systems in Southern Arizona for 23 years, making them one of the longest-running dedicated solar companies in a state that has no shortage of sunshine or competition. Based in Tucson, TFS was founded on the idea that solar should be part of a broader approach to sustainable living, not just a way to trim an electric bill.

The reason TFS earned the top spot in Arizona comes down to trust and longevity. In a market flooded with companies that opened during the solar boom of the 2010s, this team has been doing the work since the early 2000s, well before solar panels became mainstream. That experience shows in their system design capabilities, their familiarity with local utility interconnection at TEP and APS, and their understanding of how Arizona's intense UV exposure and extreme heat affect long-term panel performance and inverter reliability.

Their 4.9-star Google rating from 503 reviews places them among the highest-rated solar companies in Arizona by volume and satisfaction combined. Tucson homeowners consistently highlight thorough energy audits, willingness to explain system performance data in plain language, and responsive warranty service.

TFS employs NABCEP-certified installers and works with a variety of equipment brands to match each project's requirements. They handle residential rooftop installations, ground-mounted arrays, and commercial systems. The company has also been involved in community solar initiatives and educational programs in the Tucson area.

With zero BBB complaints and a composite score of 73.8 out of 100, Technicians for Sustainability is our top-ranked solar company in Arizona for 2026.