Backup power systems
As a storage of surplus energy from Solar plants and its reuse, if necessary, it is possible to implement it from value in the order of kW, so as to ensure the highest possible self-sufficiency of the entire system.
Simply say, usually when the sun is shining or the wind is blowing, we can't or don't know how to use the energy from PV, and when we're at home in the evening, we no longer have this energy. Hydrogen then serves as an energy carrier, similar to batteries, and provides energy when needed.
The main advantage is that the hydrogen tank doesn't matter if you use it all up or just a little bit, or if you want to leave the supply to the winter time, when it will be needed most. The hydrogen in it will wait for you.