this post was submitted on 30 Aug 2023
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[–] [email protected] 69 points 2 years ago* (last edited 2 years ago) (34 children)

That is factually false information. There are solid arguments to be made against nuclear energy.

https://isreview.org/issue/77/case-against-nuclear-power/index.html

Even if you discard everything else, this section seems particularly relevant:

The long lead times for construction that invalidate nuclear power as a way of mitigating climate change was a point recognized in 2009 by the body whose mission is to promote the use of nuclear power, the International Atomic Energy Agency (IAEA). “Nuclear power is not a near-term solution to the challenge of climate change,” writes Sharon Squassoni in the IAEA bulletin. “The need to immediately and dramatically reduce carbon emissions calls for approaches that can be implemented more quickly than building nuclear reactors.”

https://www.dw.com/en/fact-check-is-nuclear-energy-good-for-the-climate/a-59853315

Wealer from Berlin's Technical University, along with numerous other energy experts, sees takes a different view.

"The contribution of nuclear energy is viewed too optimistically," he said. "In reality, [power plant] construction times are too long and the costs too high to have a noticeable effect on climate change. It takes too long for nuclear energy to become available."

Mycle Schneider, author of the World Nuclear Industry Status Report, agrees.

"Nuclear power plants are about four times as expensive as wind or solar, and take five times as long to build," he said. "When you factor it all in, you're looking at 15-to-20 years of lead time for a new nuclear plant."

He pointed out that the world needed to get greenhouse gases under control within a decade. "And in the next 10 years, nuclear power won't be able to make a significant contribution," added Schneider.

[–] [email protected] 61 points 2 years ago (5 children)

Long lead times against nuclear have bee raised for the last 25 years, if we had just got on with it we would have the capacity by now. Just cause the lead time is in years doesn't mean it isn't worth doing.

[–] [email protected] 42 points 2 years ago (1 children)

when is the best time to plant a tree? 30 years ago. When is the second best time? now.

[–] [email protected] 25 points 2 years ago* (last edited 2 years ago) (1 children)

Surely the second best time would have been 29 years ago

[–] [email protected] 6 points 2 years ago

Don't fuck this up for me bro

[–] [email protected] 14 points 2 years ago (1 children)

As others pointed out, to build that many nuclear power plants that quickly would require 10x-ing the world's construction capacity.

My counterpoint is that if we had "just got on with it" for solar, wind, and battery, we would have the capacity by now and the cost per kwh of that capacity would be approximately half as much as the same in nuclear. And we would have amortized the costs.

[–] [email protected] 2 points 2 years ago (1 children)

No it wouldn't. China laid more concrete in 5 years than the entire world did in 100 years. I highly doubt that converting the entire world to nuclear is going to use that much more concrete. I mean hell, they laid like 15 or 20,000 miles of high speed rail in just a few years. They built like 300 million apartment units.

[–] [email protected] 3 points 2 years ago (1 children)

Just did a bunch of my own math before realizing those numbers were already out there. We would need to add 3960 nuclear plants to match current energy demand for the world (440 power 10% of the world).

That would require at least 5 years of construction per plant. It takes about 7000 workers to produce a nuclear plant. To produce them concurrently would require about 27.7 million construction workers dedicated to this project for at least 5 years. So on one hand, perhaps you're right, since there are 100M construction workers in the world. I can't, however, find numbers about how much heavy equipment exists to facilitate a product requiring 1/4 the world's construction workers concurrently. You might be right that if all other construction were ground to a halt, we might be able to manage a 5-year plan of nuclear at the cost of about $20T (I had done the math before realizing this reply were about workers, not cost stupidity). I concede it seems "10x increase world construction capacity" was wrong, and the real number is somewhere around 1.5-2x, so long as we stay conservative with nuclear figures and ignore extra costs of building or transporting nuclear energy to countries incapable of building their own plants.

Interestingly, at those construction numbers, you could provide small-project rooftop solar to the world. I can't find construction numbers for power farm solar, except that it's dramatically more efficient than rooftop solar. Unlike nuclear, it appears we could easily squeeze full-world solar with our current world construction capacity.

I won't bore you with the cost math, but since I calculated them I'm still going to summarize them. Going full nuclear would cost us about a $20T down payment. Going full solar (with storage) down payment is about $4T (only about $1T without storage costs factored). And while nuclear would be cheaper than solar per year after that $20T down, solar power and storage would STILL be cheaper in a 100 year outlook, but would also benefit from rolling efficiency increases as we add new solar plants/capacitors and tear down older ones..

[–] [email protected] 2 points 2 years ago* (last edited 2 years ago) (2 children)

Not all 7,000 construction workers would be working on the site concurrently. Different trades come and go depending on the phase of the project. So at first you'll have the civil engineering earth movers come in, who clears the site and excavates the foundations. Then you'll have the concrete crews come in who pour the foundations and do all of the concrete work. Obviously on a nuclear power plant there is a lot of foundation work, as well as a lot of above ground concrete so probably a good chunk of the construction workers will fall into this category.

Power plants also have a lot of structural steel work, electrical and special equipment that would likey fall under the piping category but each of these uses a separate set of skilled labor that does not overlap.

If you were going to actually try to build 3,300 nuclear power plants, you would rotate crews from project to project which would increase efficiency rather than hiring 27 million separate workers.

In any case, I don't think converting the world's total electrical power generation to 100% nuclear is by any stretch of the imagination a good idea. Personally I think maybe 15 to 25% nuclear power generation would be a more realistic mix, similar to the US electrical power generation. The rest of the power should be solar, wind, hydro, wave and geothermal as they are absolutely cheaper to build.

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[–] [email protected] 10 points 2 years ago (4 children)

Long lead times, cost overruns, producing power at a higher price point than renewables, long run time needed to break even, even longer dismantling times and a still unsolved waste problem. Compared to renewables that we can build right now.

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[–] [email protected] 6 points 2 years ago (1 children)

Did you read the quote? 15-20 years, as in decades before 1 nuke plant is built. I agree in that politicians of the past should have led us to a more sustainable and resilient energy future, but we're here now.

Advanced nuclear should still be 100% pursued to try to get those lead times down and to incorporate things like waste recycling, modularity, etc., but the lead time in decades absolutely means nuclear power might not be something worth doing.

The IPCC puts the next 10-20 years as the most important and perilous for getting a hold on climate change. If we wait for that long by not rolling out emission-free power sources, transit modes, or even carbon-free concrete, etc., then we might cross planetary boundaries that we can't come back from.

Nuclear is a safe bet and bet worth pursuing. I would argue that, along with that source from the IAEA, old nuclear is note worth it.

[–] [email protected] 3 points 2 years ago (2 children)

How much concrete does it take to build a nuclear plant? Concrete production is currently 8% of global emissions, so if you have to scale up construction capacity 10x for the next decade, don't you end up destroying the environment with concrete before they are even operational?

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[–] [email protected] 39 points 2 years ago (10 children)

https://en.m.wikipedia.org/wiki/Kashiwazaki-Kariwa_Nuclear_Power_Plant

the largest fission plant was literally working 5 years after construction started

fission plants are just more expensive now because we don't make enough of them.

I guess safety standards changed but even wind power kills more people per watt than fission so ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯

Nuclear could've easily worked if people didn't go full nimby in the past few decades

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[–] [email protected] 21 points 2 years ago

There are solid arguments to be made against both nuclear and renewables (intermittence, impact of electricity storage, amount of raw material, surface area). We can't wait for perfect solutions, we have to work out compromises right now, and it seems nuclear + renewable is the most solid compromise we have for the 2050 target. See this high quality report by the public French electricity transportation company (independent of the energy producers) that studies various scenarios including 100% renewable and mixes of nuclear, renewables, hydrogen and biogas. https://assets.rte-france.com/prod/public/2022-01/Energy%20pathways%202050_Key%20results.pdf

[–] [email protected] 11 points 2 years ago

Those aren't arguments against nuclear power; those are arguments against the incompetence of entities like Southern Company and Westinghouse, as well as the Public Service Commission that fails to impose the burden of cost overruns on the shareholders where they belong.

I should know; I'm a Georgia Power ratepayer who's on the hook paying for the fuck-ups and cost overruns of Plant Vogtle 3 and 4.

It would've been way better if they'd been built back in the '70s, since all indications are that the folks who built units 1 and 2 actually had a fucking clue what they were doing!

[–] [email protected] 7 points 2 years ago

Your arguments didn't actually invalidate the comment you replied to. They are just arguments against nuclear being a short-term solution.

We need both, short and long term ones. Wind and water cannot be solely relies upon. Build both types.

[–] [email protected] 6 points 2 years ago

That is true, building a nuclear power plant doesn't help. The problem is how many we closed down in a panic, in particular after Fukushima. We could make great strides towards cleaner energy and cutting the actually problematic power plants (coal, gas) out of the picture as we slowly transition to renewables-only if we had more nuclear power available.

Of course, in hindsight it's difficult to say how one could have predicted this. There's good reasons against nuclear energy, it just so happens that in the big picture it's just about the second-best options. And we cut that out first, instead of the worse ones.

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