Hydrogen is incredibly dangerous and bulky. Using it where you create it works well enough, but without some breakthrough in metal hydride storage or similar it

Hydrogen is incredibly dangerous and bulky. Using it where you create it works well enough, but without some breakthrough in metal hydride storage or similar it's starting to look like a poor choice even against batteries if you want to move your energy around. Stuff that can store as a liquid opens a lot of possibilities, although this probably means ammonia most of the time.