... for 300W, 7*100AH for 600W * Controller: SCH20A for 300W, MPPT40A for 600W * Solar panel: 3*PO100 for 300W, 5*PO120 for 600W * PV mountion: 1 array for 300W, 1 ... mountingone array for 3*110WPone or two array for 5*120WPThe other partsBreaker,Arrester,wire collector ,cables set. Off-Grid Solar Power system FG-SPS300 ...