First Analysis of the Water Requirements of a Hydrogen Economy

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This graph shows the annual water consumption as a feedstock and coolant for generating 60 billion kg of hydrogen which is influenced by both the fraction of hydrogen that is produced by thermoelectrically powered electrolysis and electrolyzer effici ...
This graph shows the annual water consumption as a feedstock and coolant for generating 60 billion kg of hydrogen, which is influenced by both the fraction of hydrogen that is produced by thermoelectrically powered electrolysis and electrolyzer efficiencies. Image credit: Michael E. Webber.

One of the touted benefits of the futuristic US hydrogen economy is that the hydrogen supply—in the form of water—is virtually limitless. This assumption is taken for granted so much that no major study has fully considered just how much water a sustainable hydrogen economy would need.


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