Solar Power Packs systems are normally available with battery backup, work like an inverter and give you freedom from power cuts. They give priority for solar, which means they will first consume the energy generated from solar and in absence or lack of Sunlight will automatically switch over to battery power followed by grid. The battery discharge level can also be set depending on power to be reserved for emergency use. Excess solar power, which is available after catering to day time load, is used to charge the battery. Hybrid systems can also be provided with grid feeding facility for areas with Net Metering policy.