Hybrid solar power systems are the most common type of solar electric system. It combines advantages of on grid solar system and off grid solar system. When themain power is turned off, the solar system can automatically switch to use the solarenergy in the battery to run the load. When the solar energy is insufficient and powergoes out, it will automatically switch to the main power and connect with the grid touse the main power. And it will charge the battery at the same time. It is very suitable for home, office, farm, hotel, factory, airport, supermarket.