E.ON is the developer of two projects at the Solar Zone. E.ON built its first solar project at the Tech Park (e.g. Tech Park Solar) as a 5 MW solar installation that uses multi-crystalline silicon modules and single-axis trackers. The second project is the Iron Horse project, a combined energy storage (10MW / 2.5 MWh) and solar (2.4 MW) project that provides grid reliability services to Tucson Electric Power.

UA Tech Park tenant since 2012