This 4.9 kW system has twelve 410 watt bifacial panels, which give about 8% more production due to reflection off of the snow on the back side of the panel. The manual tilt is moved 5 times a year and will yield about another 10% of extra production. We also installed this system “battery ready” with the Sol-Ark inverter. This way the customer can add batteries later when ready. The inverter functions as a grid tied inverter now.