this post was submitted on 26 Aug 2024
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1
Green Hydrogen To Be Featured In World’s First Nationwide “Hydrogen Valley” (cleantechnica.com)
submitted 2 months ago by [email protected] to c/[email protected]
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The Baltic nation of Estonia has launched an ambitious 100% renewable energy goal for 2030. As part of that goal, energy industry stakeholders plan to showcase the entire country as the world’s first nationwide, integrated “hydrogen valley” hub, with a focus on green hydrogen.

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[–] [email protected] -1 points 2 months ago (1 children)

What you wrote is essentially true of Li+ ion batteries (not truly green unless the electricity is too). The part I was missing was the efficiency of electrolysis being half that of Li+ charging.

Fuel cells can also run cars, and refilling is much faster than recharging. So you can build cars which can go long ranges with quick stops. But of course the infrastructure for hydrogen fuel is well behind even car chargers, let alone gasoline.

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago)

Fuel cells can also run cars, and refilling is much faster than recharging.

It's usually faster, yeah. But honestly I'm not sure which I'd rather have in my cars, explosive Li batteries or explosive highly pressurized hydrogen. Or are we storing liquid hydrogen? Because that seems like an even worse idea.

It sucks that high density energy storage systems are by definition able to release a lot of energy (explosive).