Liquified hydrogen carried at atmospheric pressure just needs insulated tanks. We already have a lot of experience shipping liquified natural gas. It can probab

Liquified hydrogen carried at atmospheric pressure just needs insulated tanks. We already have a lot of experience shipping liquified natural gas. It can probably be carried in the same tanks. You can burn ammonia where you burn natural gas today. It is probably not suitable as fuel for aircraft, but otherwise it is entirely good enough. Ships burning bunker oil can be converted burn ammonia just by changing out tankage and plumbing. But ammonia fuel cells will only get better, never worse. Building out a H2/NH3 system will be massively expensive, but a tiny fraction of the cost of that much nuke capacity. And, the H2 and NH3 are valuable industrial feedstock, so none of the production capacity ever sits idle.