A solar system which has battery storage and a backup is called an off grid solar system that generates electricity after power cut or during the night hours. It has four major components, such as Solar panel Inverter, Battery and Balancing of System or BOS materials. This solar system is more popular and comes with a power backup and it works independently of the grid. They are solar PV(Photovoltaic) systems which are not connected to the national grid.Completely independent from the grid. Also called Stand-Alone PV systems. Energy can be Consumed at the same time of production or stored in batteries for later use.