June 28, 2021
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The basic definition of green (versus grey, brown or blue) hydrogen is well known – see our article “Hydrogen: Is it the answer to clean energy?” from the Autumn 2020 edition of this publication. However, the term “green hydrogen” belies a fundamental ambiguity: when it comes to the details of production, there is no common definition of green hydrogen across industry sectors.
Regulators and governments around the world are grappling with the question: what is green hydrogen?