GRAY HYDROGEN Definition & Meaning

gray hydrogen

or grey hy·dro·gen

[ grey hahy-druh-juhn ]

Phonetic (Standard)IPA

hydrogen that is produced by heating a hydrocarbon, especially natural gas, with steam, resulting in the release of carbon dioxide into the atmosphere. Compare blue hydrogen ( def ), green hydrogen ( def ).

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First recorded in 2015–20

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Examples have not been reviewed.

The dirty way is called gray hydrogen.

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Eventually, they’ll have to compete with gray hydrogen on costs, or government subsidies will need to continue forever.

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Although green hydrogen costs about $5 per kilogram to produce — more than twice as much as gray hydrogen — the U.S.

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If fossil fuels are used, the process results in greenhouse gas emissions, and the result is called gray hydrogen.

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Today, the company uses “gray” hydrogen, which is produced with natural gas.

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