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The Sodium-Ion Battery Revolution Has Started (cleantechnica.com)
submitted 1 year ago by to c/technology@lemmy.world
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cross-posted from: https://lemmy.bestiver.se/post/693048

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[–] 6 points 1 year ago (4 children)

Yup. BYD's 30GWh/year means 1kwh/second!

I can't resist cancelling the units even though it doesn't actually make sense because it's a capacity not a volume, as it were, but that's a 3.6kw factory!

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  • [–] 4 points 1 year ago (3 children)

    3.6 MW even. :)

    3.6 kW is what a 50cc internal combustion engine typically produces

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  • [–] 4 points 1 year ago* (last edited 1 year ago) (2 children)

    Here's my working. There are about 31.56 million seconds in a year, which I rounded to 30 million, and so

    30 GWh/year
    = 30x10^9 Wh / year
    ~ 30x10^9 Wh / 30x10^6 s
    = 10^3 Wh/s
    = 1 kWh / s
    = 3600 kWs / s
    = 3.6 kw

    I used the duckduckgo autocalculator just now, and 30/31.56*3.6 is about 3.4, so it's much closer to 3.4kW.

    (It's not power output, it's manufactured storage output. I think of it as like a factory that produces 3.4 litre capacity jugs per second, but they're not jugs, they're actually batteries. Big ones.)

    They could make a 120kWh battery (which would give a family car a range in the region of 450 miles) every two minutes.

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