490W 156 HALF CELLS COMMERCIAL SOLAR MODULE SILVER, 1500 VDC Silfab Commercial is a high-efficiency solar panel optimized for commercial projects where maximum power density and superior performance is essential. The half-cell technology is designed to improve the panelâ??s performance and durability. The durable silver frame is engineered to accommodate high wind and snow loads with front load validated up to 5400 Pa.