Hydrogen: grey + blue ≠ green - Artemis Investment Management

To decarbonise the economy, the world is going to need hydrogen – and a lot of it. But how that hydrogen is obtained matters; some forms can be equally polluting as fossil fuels. Neil Goddin explains why blue can never be green.

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... Most hydrogen is currently produced by heating fossil fuels under pressure – the result is so-called ‘grey’ hydrogen. But although grey hydrogen often uses hydrocarbons that are the by-products of other processes, it still results in greenhouse-gas emissions.

Blue hydrogen is theoretically better: it is grey hydrogen but with the greenhouse gases released and stored underground. But despite decades of trying, carbon capture and storage remains unproven at scale.

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