Japan pulled the plug on nuclear power after the 2011 Fukushima disaster, but with the G7’s dirtiest energy mix, it is seeking to cut emissions, and atomic energy is making a steady comeback, in part because of AI.

Before the 2011 quake and tsunami, which killed around 18,000 people, nuclear power generated about a third of Japan’s electricity, with fossil fuels contributing most of the rest. All of Japan’s 54 reactors were shut down afterwards, including those at KK. To keep the lights on, resource-poor Japan has hiked imports of natural gas, coal and oil while increasing solar power. But fossil fuels are expensive, with imports last year costing Japan about $510 million a day.

The government is striving for “carbon neutrality” by 2050 and to cut emissions by 46 percent by 2030 from 2013 levels. It wants to increase the share of renewables to 36-38 percent from around 20 percent and cut fossil fuels to 41 percent from around two-thirds now.

Japan aims for nuclear power to account for 20-22 percent of its electricity by 2030, up from well under 10 percent now. Japan in late 2022 decided to accelerate reactor restarts and to extend operating time for nuclear reactors to 60 years from 40.

Nine of Japan’s 33 still-operable reactors are currently online.

Business groups remain worried about power shortages, particularly as Japan seeks to go big in energy-hungry data centres for artificial intelligence (AI).

Making Fukushima fully safe, meanwhile, has also barely begun. Japan last year started to release into the Pacific Ocean some of the 540 Olympic pools’ worth of treated cooling water amassed since 2011.

  • Sibbo
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    1 month ago

    Well, at least they are getting closer to being carbon neutral. Where do they store their nuclear waste, given that their whole island is so geologically active?

  • supersquirrel
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    1 month ago

    It really makes me realize how truly fucked the next 30 years are going to be (and beyond of course) that all of a sudden no one cares about climate goals and reducing wasteful energy use “because AI”.

    Do y’all not realize ocean food networks are likely about to collapse in the next 10 years and that global warming has been alarmingly increasingly accelerating in the last 5 years?

    Sure nuclear power can be great, but that power needs to be used for actually useful power efficient tasks. AI is the least energy efficient solution for most problems it attempts to solve, by several orders of magnitude.

    Moreover I think the philosophy of nuclear power advocates is usually something along the lines of “we don’t need to be energy efficient if we have unlimited power!” which is an absurdly naive way to look at the climate crisis that arose out of that same kind of thinking.

    In the first place this flavor of nuclear power advocacy ignores that the current system is violently opposed to that kind of shared abundance and wealth at an existential level and that the solutions needed to solve that can never come from a more advanced and powerful nuclear design.

    Advocacy for renewable energy on the other hand generally understands this and doesn’t pretend the solution is a seductive fantasy about limitless clean power fueling limitless growth where people in wealthy industrialized nations can all keep living the same lifestyle indefinitely.

    • marcos@lemmy.world
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      1 month ago

      Treated cooling water shouldn’t pose any danger.

      Now whether or not it does depends on the honesty of the people claiming it’s treated. But it shouldn’t.

    • LainTrain@lemmy.dbzer0.com
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      1 month ago

      It’s what the people want, so that’s what it’s gonna be used for, as long as the energy is clean and renewable, what do you care what someone spends their power bill on?

        • LainTrain@lemmy.dbzer0.com
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          1 month ago

          Woops. I misspoke. Yeah, nuclear is not renewable, but it’s a helluva lot better than fossil fuels, and I’m not advocating for nuclear instead of solar/wind/hydro, but if it makes sense to do alongside renewables then I don’t see why not, especially as energy demands go up and whatever your opinion getting every single person to comply with not running their own models is not realistic and a kneecap to the technological development.

          I’m sure the government of Japan weighed their options and there is a good reason to do nuclear power, especially considering their history.

        • Its 95% renewable. And all deaths from nuclear including the bombs and melted down reactors is equivilent to a couple weeks of deaths caused by coal pollution.

          I believe there is some evidance the oil/coal companies pushed anti nuclear propaganda cos it is so effective it would have effected their bottom line.

          • itslilith@lemmy.blahaj.zone
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            1 month ago

            That’s not how this works. That’s not how any of this works. That’s like saying plastic is renewable because you can recycle part of it

            Nuclear is a centralised, slow and expensive technology. If we had built it up 50 years ago, we wouldn’t be so dependent on coal today, that much is true. But to get away from coal now, we need investment in renewables.

            The energy companies who own the coal plants often are the same that own the nuclear plants. And they’re afraid that the grid becomes less centralised. I don’t buy that conspiracy about coal suppressing nuclear. Nuclear isn’t an economically viable technology today (and might not ever be) without huge government subsidies in perpetuity.