More of an inefficient form of energy storage than anything.. any use down the road should be justified.
snnip
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Most hydrogen is currently made by processes — such as steam reformation of natural gas (methane) — that produce large amounts of CO2 as a by-product. Although ‘green’ hydrogen can be made by using electricity from renewable sources to split water molecules, this process is costly compared with more conventional production methods.
It can also be an inefficient use of renewable resources. Using green electricity to make hydrogen at times of peak demand, when that energy could be feeding the grid and displacing electricity generated from fossil fuels, could result in higher overall emissions than intended. Making hydrogen with electricity generated from unabated use of fossil fuels would be even worse.
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