I think it is the second law of thermodynamics that refutes that. The overhead will be 30-40%, just in the primary conversion to hydrogen, not counting storage, distribution, etc. That is to say, to get enough hydrogen to supply 1000 kwh of power will take 1300 kwh of electricity, or of natural gas (very rough figures). There is always an overhead, otherwise we could have perpetual motion.

So, it doesn't make any sense to use natural gas to produce it as we do today, we would have to come up with many new nuclear plants, or enough wind turbines to cover a couple of midwestern states, or enough solar cells to cover a chunk of Africa. Also, we will need pure water at the point of production, in order to use electrolysis. Sounds a little ways off to me.

It isn't at all hopeless, but I am just pointing out that the dream of a hydrogen economy makes a better political speech than it does a business proposition.

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