How much electricity is required to break water into hydrogen and oxygen?
No. Electrolysis requires direct current. I am currently living in Illinois where we have wind farms that generate electricity – they have become controverial for unexpected reasons – but the most efficient utilization of energy from this source is a low friction generator of alternating current – which is pumped into the existing electrical grid. This is done in a few isolated instances in Northern California also. Direct current died with Edison, btw. The additional loss of efficiency in using H2 as a storage medium, not to speak of the Hindenburg effect, makes your idea truly impractical. I was a staff engineer for the University of Iowa for 6 years – we amused ourselves with thought experiments like this one in our idle time. Sorry, but this one just would not fly.
