Technicians for Sustainability

Technicians for Sustainability, commonly known as TFS, is an employee-owned cooperative solar installation company founded in 2003 in Tucson, Arizona. Operating from 1050 E 19th Street, TFS has installed over 59 MW of solar capacity and brought hundreds of battery storage systems online for residential and commercial customers across Southern Arizona. The company is one of only a handful of solar installers nationwide to hold full NABCEP company accreditation.

TFS is a SunPower Elite Dealer and installs inverters from Enphase and SMA alongside Tesla Powerwall and Enphase IQ battery storage systems. The company also offers solar hot water installations, making it one of the more versatile renewable energy providers in the Tucson market. As an employee-owned cooperative, many TFS team members are also owners, which drives a culture of accountability and quality across every project.

With a 4.9-star rating from over 600 reviews, TFS is the highest-rated solar installer in Tucson by a significant margin. The company has helped over 2,000 customers make the switch to solar since opening its doors in 2003. Customers consistently praise the no-pressure consultative approach, technical competence, and thorough follow-up support. TFS offers 25-year manufacturer warranties on panels and inverters with a 10-year workmanship guarantee.