• givesomefucks@lemmy.world
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    1 year ago

    Nuclear power is the ONLY form of clean energy that can be scaled up in time to save us from the worst of climate change.

    Long term nuclear is great…

    But building new plants uses a shit ton of concrete. So we’re paying the carbon cost up front, and it can take years or even decades to break even.

    So we can’t just spam build nuke plants right now to fix everything.

    30 years ago that would have worked.

    • Ertebolle@kbin.social
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      1 year ago

      But building new plants uses a shit ton of concrete. So we’re paying the carbon cost up front, and it can take years or even decades to break even.

      That’s not remotely on the same scale, carbon-wise. Global output is like 4 billion tons of concrete per year, a nuclear plant uses like 12 tons per megawatt; an all-in nuclear buildout would use a tiny, tiny fraction of global concrete production and the carbon costs aren’t even remotely equivalent.

      (also, wind power uses way, way more concrete)

    • SCB@lemmy.world
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      1 year ago

      Building any sort of new power plant uses a shitload of concrete, so that cost isn’t as dramatic as this would seem.

      I think nuclear is dramatically overstated in terms of short term feasibility, but concrete use is not the reason why.

    • echo64@lemmy.world
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      1 year ago

      do you have a source for this carbon cost? i can’t find any figures about even the amount of concrete in a nuclear plant nevermind the co2 cost of that.

      I do find a lot of literature that states that the lifecycle co2 cost of nuclear is on part with solar and wind per kwh so i find your assertment about the payback time being decades a little unlikely to say the least.

    • zik@lemmy.world
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      1 year ago

      Long term nuclear is great

      It’s the most expensive option so I’m not sure why people here are so keen on it. It’s much cheaper and faster to scale up renewable energy and in-fill with batteries and gas. Then phase out gas over time for a mix of things like pumped hydro, tidal, etc… This is already working in a lot of places and doesn’t involve long build times like nuclear.

    • Wooki@lemmy.world
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      1 year ago

      8 years to build, not 30. Instead we are building many many more coal and gas plants. What a terrific alternative. Fallacy of renewables without storage is done. It’s never going to happen.