[RM7]

Stupid idea.

It takes roughly 30% of the energy that H2 can produce to just compress it into a usable form, and that doesn't even account for electrolysis to get it. Then you need high pressure tanks all over the place, trucking fuel all over, digging up tanks, installing new tanks and pumps. Ships and pipelines that can carry it, etc. The infrastructure doesn't even exist, vs. electric that does actually exist and can be upgraded as battery capacity increases. Although the energy density of H2 by weight is great, by volume it's extremely poor and it shoots itself in the foot as far as aviation, because it requires giant heavy tanks that have to be able to withstand extreme pressure and not create hazards by themselves. Having to have a continuous tank vs. something that can have wing spars and ribs running through it is a huge limiting factor. It's still better than batteries at this point for aviation and batteries may never fulfil the mission there 100%, but in just about every other application, H2 is a huge waste of resources and time when that could be spent bettering the existing electrical infrastructure. Sure, there may be some niches where H2 makes sense, but it'll never really be more than that for anything on the ground IMO. The great thing about electric is that it doesn't care where the power comes from. Burn that H2 in a gas-turbine at the source to feed the grid.