Its not a stupid question, I'm sure lots of folks wonder the same thing. The challenge as I understand it is holding on to the hydrogen. As a gas, hydrogen is

Its not a stupid question, I'm sure lots of folks wonder the same thing. The challenge as I understand it is holding on to the hydrogen. As a gas, hydrogen is really really small and not very dense. Storing, transporting, and handling hydrogen is really hard. I got a chance to see the hydrogen refueling station at a hydrogen bus pilot project and keeping enough hydrogen (without spending all the energy to chill it down in to liquid form) and dispensing it pretty amazing. Its way simpler to use gas generators (things that out gas hydrogen) like they did for the big zeppelins[1]) That is why most schemes that have free hydrogen available, if they aren't using fuel cells on site, usually have a process for capturing the hydrogen in a form that is easier to handle and transport as well as convert back into either heat or hydrogen. [1] https://welweb.org/ThenandNow/Hydrogen%20Generation.html https://welweb.org/ThenandNow/Hydrogen%20Generation.html