Technically it could work. However, traditional batteries make a lot more sense. Hydrogen makes some sense for a vehicle because it can be more energy dense (it actually only makes sense for large trucks). However, it has to be stored at cryogenic temperatures. In a place where you probably don't care about mass or space much, other battery technologies are far better, without the added cost of cryogenic cooling and having to deal with hydrogen, which leaks through anything.

hydrogen scales well if you use big industrial setups, both for generation and for storage.

basically, bigger tanks are cheaper (consider higher volume/surface area ratio) and in fact the best tanks might simply be naturally occurring underground caverns. you can't have these at home.

There's a engineer that did it in his backyard. I'll see if I can find it when I get home.