The trouble with hydrogen is that it is very hard to store. It’s a very small molecule that can easily slip through even the tiniest gaps. So you actually have to cool it down or put it under a lot of pressure. Usually the latter is favoured because it doesn’t require any energy to keep up. But it is more prone to breakage which can result in an explosion.

I think Norway ditched their hydrogen plans after a gas station exploded. Not in a Hindenburg way, “just” from the pressure.