Due to the lower and lower prices of solar power systems, household solarenergy storage systemare becoming more and more popular. There are two main forms of household solar energy storage systems,hybrid solar power system(also named grid tied solar energy storage system) andoff-grid solar power system.

On grid solar energy storage systemmainly consists of solar panels, hybrid inverter, batteries (batteries orlithium batteries).Photovoltaic modulesand city power can both charge the battery. The PV modules can charge the batteries during the day time, the grid power can charge the batteries when the electricity price is low at night.

Theoff-grid solar energy storage systemmainly consists of solar charge controller, off-grid inverter, battery, etc., and can work completely independently. Widely used in remote mountainous areas, no electricity areas, islands, communication base stations and street lamps