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Solar energy storage breakthrough could make European households self-sufficient (sifted.eu)
submitted 2 years ago by to c/technology@lemmy.world
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[–] 7 points 2 years ago (2 children)

According to their site:

A storage system of 3 m3 can store up to 10,000 kWh of energy

So about 3.33 MWh per cubic meter, 3.33 kWh per liter, or 3.33 Wh per cubic centimeter.

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  • [–] 4 points 2 years ago* (last edited 2 years ago) (2 children)

    Hmm, if that's correct, that's even higher than liquid hydrogen, which would be really impressive.

    Energy densities

    Edit: Looks like their gravimetric energy density is 3.5kWh/kg

    Edit 2: here's a comparison for batteries

    Battery Cell Energy Density

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  • [–] 4 points 2 years ago (1 child)

    Since it's solid hydrogen I think it's to be expected, however I didn't see any information regarding energy losses which I imagine would be quite high when you have those kinds of cooling requirements.

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  • [–] 2 points 2 years ago

    This is why I hate marketing pushes. If they're a good-faith business, the efficiency needs to be within shooting distance of reasonable against costs. But as we learned from the artificial meat industry (that ultimately admitted we've already probably reached lifetime price/quality/scale limits from the methodologies they're using) brutal honesty doesn't get you investors.

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