Simple definition of home energy storage system, the system is the use of distributed photovoltaic, wind power generation, utility complementary, to provide a solution to the home power supply. Can effectively realize the transformation and storage of energy, to solve the imbalance between distributed power generation and load, improve the stability of renewable energy power generation and utilization rate, in the user side to achieve "self-generation and self-use", saving electricity costs. The system adopts high-efficiency and long-life lithium iron phosphate batteries, which, together with the excellent battery management system, can ensure that their lifespan reaches more than ten years.