For states on the coast with excess solar energy why don't they invest in water desalination and pump that water back upstream? - eviltoast
  • Bustedknuckles@lemmy.world
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    12 days ago

    Locally, yes. Solar (and wind) energy isn’t uniform in timing or location, so when there’s too much of it relative to consumption, there needs to be a profitable way to use it rather than just dumping it into resistive heating or letting the panels wear out faster at open circuit. Desalination is a pretty good idea since places with high solar resources also tend to be poorer in water resources. The challenge is the capital costs of desalination plants and competition with existing water sources - water rights are a giant ratfuck by themselves. I think it’ll make sense to build desalination plants that can absorb excess energy generation, but if there’s even political will for it, they’ll take a lot of time to build up

    • hendrik@palaver.p3x.de
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      12 days ago

      You could also have a power grid and distribute the excess electricity to the next state where it’s cloudy. Or do other things with it. Or build the AI datacenters there, that Google etc are currently planning to power with small nuclear reactors… I believe desalination is a very wasteful option compared to other things.

      • visor841@lemmy.world
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        12 days ago

        Transporting large quantities of electricity isn’t easy, you have to have large enough interconnects to handle the energy you’re moving around.

        • hendrik@palaver.p3x.de
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          12 days ago

          Entire Europe is connected. Sure we’re still missing quite some cables to get the regeneratives to where they’re needed. And I suppose this doesn’t cover the UK. But it’s no problem to move around quite some energy across parts of a continent.