... solar panel3)solar panel Quality: first grade and good efficiency of cell4)Certifications of our solar panels: rohs,CE, ... you need, for example, inverter or battery, junction box, controller and so on. Take 800W for example: Work solar power ... 500AH/24V;Inverter: 1000W ;Charge controller: 20A.Form of installation: We can install or supply blueprint, high efficiency 1800W Housing solar power supply ...