The essentials
TOPIC
Where it comes from
Grey from methane reforming, blue with capture, green from electrolysis. The colour determines the carbon intensity and, increasingly, whether it qualifies for anything.
TOPIC
Why storage is hard
The smallest molecule there is. It leaks through fittings, embrittles steel, and needs either 700 bar or cryogenic temperatures to reach useful density.
TOPIC
Where it actually wins
Not passenger cars. Steel, ammonia, refining, and long-haul where batteries cannot carry the energy density.
H2
The molecule
700 bar
Storage pressure
-253°C
Liquid
STEEL
Best use case
Go deeper.
Part of the Porritt Inc. energy library. Questions or corrections are welcome.
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