hydrogen is almost as bad as batteries for storage, distribution, and portable use. Worse in a lot of ways. Even if it were totally free.
Maybe it can be a component of an artificial hydrocarbon, but unless the carbon were sourced from the air it wouldn't be a cycle and wouldn't be any better for the environment.
Maybe it can be a component of an artificial hydrocarbon, but unless the carbon were sourced from the air it wouldn't be a cycle and wouldn't be any better for the environment.