It is important for the future of the planet that more households switch to solar power. However, common small-scale solar power plants are inefficient and difficult to install. This device is the first to realize the grade of 20kW, which is more suitable for household use. It ensures 98.6% conversion efficiency, which is much higher than most other products on the market. It can run longer and generate more electricity even in low light. With the quick hot-plug battery connection, the surplus electricity can be stored flexibly or fed into the power grid.