Home energy storage systems, also known as battery energy storage systems, are centered on rechargeable energy storage batteries, usually based on lithium-ion or lead-acid batteries, controlled by computers and coordinated by other intelligent hardware and software to achieve charging and discharging cycles. Home energy storage systems can often be combined with distributed photovoltaic power generation to form a home photovoltaic storage system. In the past, due to the instability of solar and wind energy, as well as the high cost of energy storage systems, the scope of application of home energy storage systems has been limited. But with the development of technology and cost reduction, the market prospect of home energy storage system is getting broader and broader.

From the user's side, the home optical storage system can eliminate the adverse impact of power outages on normal life while reducing electricity bills; from the grid side, home energy storage devices that support unified scheduling can alleviate peak hour power tensions and provide frequency correction for the grid.

With the rapid development of renewable energy and cost reduction, home energy storage systems will face huge market opportunities in the future. Huajing Industrial Research Institute expects the growth rate of overseas household new energy storage to remain above 60% from 2021 to 2025, and the total overseas new user-side energy storage capacity will be close to 50GWh by 2025. 2022 Household Energy Storage Market Scale and Industry Investment Prospect Analysis shows that the global 2020 household energy storage market size is $7.5 billion, and the Chinese market size is $1.337 billion, equivalent to RMB 8.651 billion, which is equivalent to RMB 8.651 billion. equivalent to RMB 8.651 billion, and is expected to reach $26.4 billion and $4.6 billion in 2027, respectively.