Solar power for industry can either be generated from an in-house solar plant (captive model) or through an off-site solar farm. The solar power thus produced can be used for normal day-to-day operations of the plant including lighting, ventilation, and equipment power supply. There are certain industrial firms in India which are meeting close to 30% of their power requirements through solar energy. The solar power system used by industries can be equipped with a battery storage system also. The battery storage makes the solar plant even more relevant when it comes to reducing the electricity cost.