Hydrogen is often touted as an important transportation “fuel” in the future, though it has never gotten significant traction.
One reason is confusion over what it is – it’s not an energy source, though it is used like a fuel, but rather a form of energy storage. You take some other energy source and you generate the hydrogen, which you can then turn back into useful energy through a fuel cell, or even by burning it.
Hydrogen’s big advantage as an electricity source is you can pump it like a gaseous fuel. That means you can refill tanks quickly. Hydrogen may still have promise as a truck and bus fuel because they can handle having large tanks on board. This is where the action may be for hydrogen in ground transport.
Read the article at Forbes.