this post was submitted on 06 Nov 2023
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Photoncycle, a Norwegian start-up, says it can use solid hydrogen for long-term storage of renewable energy and wants to launch its product in Denmark on a €0.10 per kilowatt hour subscription basis. (sifted.eu)
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[–] JohnDClay@sh.itjust.works 1 points 1 year ago

They claim their volumetric energy density is 3.3kWh/L, which is very good for hydrogen. The 3.5kWh/kg gravimetric energy density is very bad for hydrogen, but good compared to batteries.

Energy densities

Battery Cell Energy Density