gray hydrogen

Or grey hy·dro·gen

[grey hahy-druh-juhn]

noun

1. hydrogen that is produced by heating a hydrocarbon, especially natural gas, with steam, resulting in the release of carbon dioxide into the atmosphere.

Word History and Origins

Origin of gray hydrogen¹

First recorded in 2015–20

Example Sentences

Gray hydrogen is produced from natural gas, and carbon dioxide is released in the process.

Read more on Barron's

However, the plan has drawn considerable opposition from environmental groups such as the Sierra Club and the Los Angeles Waterkeeper, who say that the mixture of hydrogen and natural gas — so-called gray hydrogen — is not aligned with L.A.’s climate goals.

Read more on Los Angeles Times

The dirty way is called gray hydrogen.

Read more on Los Angeles Times

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.

Read more on New York Times