Driven by carbon neutrality goals, future energy use will increasingly shift towards clean energy. As a common clean energy source in daily life, solar energy will also receive more and more attention. However, the energy supply of solar energy itself is not stable and is closely related to the day's light intensity and weather conditions. This requires a suitable set of photovoltaic energy storage equipment to regulate energy.

The heart of a home solar system

Home solar energy storage is usually installed in combination with home solar systems to provide electrical energy to home users. Energy storage systems can improve the degree of self-consumption of household photovoltaics, reduce users' electricity bills, and ensure the stability of users' electricity consumption in extreme weather and other conditions. For users in areas with high electricity prices, peak-to-valley price differences, or old power grids, purchasing household storage systems is more economical, and household users have the motivation to purchase household storage systems.

At present, most solar energy used in China is only used for water heaters. Solar panels that can truly supply whole-house electricity are still in their infancy, and the main user groups are still overseas, especially in Europe and the United States.

European and American countries are suitable for the development of household photovoltaics due to their high degree of urbanization and housing usually consisting of detached or semi-detached houses. According to statistics, the per capita household photovoltaic installed capacity in the EU in 2021 will be 355.3 watts per household, a 40% increase compared with 2019.

In terms of penetration rate, the current household photovoltaic installed capacity in Australia, the United States, Germany, and Japan accounts for 66.5%, 25.3%, 34.4%, and 29.5% of the total photovoltaic installed capacity respectively. China's current household photovoltaic installed capacity accounts for only 4%. There is huge room for development.

The core of a home solar system is energy storage equipment, which is also the largest part of the cost. The current price of domestic lithium batteries is around US$130/kWh. Taking a family of four in Sydney whose parents are working-class parents as an example, assume that the daily power consumption of the family is 22kWh, and the installed home energy storage system is 7kW solar. components plus a 13.3kWh energy storage battery. This also means that it will cost US$1,729 just to equip a solar system with enough energy storage batteries.

But over the past few years, the price of home solar equipment has dropped by about 30% to 50%, while efficiency has increased by about 10% to 20%. This is expected to accelerate the rapid development of home photovoltaic energy storage.

Home Solar Energy Storage System

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