@cstross @alexproe @ChrisMayLA6
This. There might, possibly, be a few marginal cases where hydrogen generated on site is a sensible fuel for energy generation (I'm not actually aware of any).
But it is obviously daft and a complete non-starter for things that move (trains, road vehicles etc) or distribution over wide areas (eg for domestic use).
Hydrogen is total hype and the sooner the idea gets knocked on the head the better.