A green hydrogen home system is a new - type home energy system that combines green hydrogen production, storage and utilization. Usually, the system first uses solar panels on the roof to generate electricity, and then uses this electricity to drive a small - scale electrolyzer to produce green hydrogen through water electrolysis. The produced hydrogen can be stored in a home - use hydrogen storage device, such as a metal hydride storage tank or a small - scale high - pressure hydrogen tank. When needed, the hydrogen can be used in a fuel cell to generate electricity and heat, providing power and heating for the family. For example, HPS's Picea 2 is an integrated energy system that integrates "electrolyzer - hydrogen storage - fuel cell", which can realize home energy self - sufficiency. Lavo's home - use hydrogen storage equipment can also be combined with the solar system, storing the excess electricity as hydrogen, and then supplying power or heating through the fuel cell, reducing the family's dependence on the power grid.