The most significant challenge of this project was working with a structural engineer to devise a plan to reinforce the old roof structure in order to allow the introduction of new dead load and uplift forces caused by the solar array. These reinforcements were implemented by the building contractor in conjunction with the new insulation and roofing surface. The other main challenge was simply working downtown. S. Tracy Ave had to be blocked off to crane materials on and off of the roof area, and street foot traffic had to be rerouted to enable snow removal on numerous occasions.
The 15 S. Tracy solar system consists of 108 LG Solar 310-Watt solar modules, mounted with standoffs at a 13-degree pitch off of the facility’s flat roof. The power from the solar array is
converted to three-phase 208-Volt AC power by the 3 SolarEdge 10 kW transformerless inverters, seen above. The system is projected to produce 39,240 kWh annually. System performance data is monitored online.