The 1kWp PV stand alone system supplies power for private residences and is made up of the solar module, controller, inverter, storage battery and bracket. Basic Usage: Throughout the day the solar module generates DC electricity from the sun and stores this energy in the battery. The inverter then transforms the DC electricity into AC electricity in order to power the private residence. The AC electricity is generated from the controller and inverter. Model : CSESM-100D Parameters : Standard Open Circuit Voltage Voc (V) : 21.6 Optimum Power Voltage Vmp (V) : 17.2 Short Circuit Current lsc (A) : 6.49 Optimum Operating Current lmp (A) : 5.81 Maximum Power Up (w) : 100 Dimension Of Module : 670í-1250í-40mm Weight : 12.0KG