this post was submitted on 15 Oct 2024
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If it results in the nuclear plants remaining online and providing energy after the AI bubble pops, that doesn't seem so bad.
Fission is one of the cleanest energy sources we have today.
The AI bubble isn't going to pop, it's just going to transition to a rebranded cloud computing business.
A nuclear fission power plant generates about as much CO2 as wind turbines if you have a look at it's whole lifecycle. That's because just operation doesn't generate CO2. But nonetheless that power plant is made from materials like lots of concrete. It needs to be built, decommissioned, etc. You need to mine the uranium ore, ... All of that generates quite some CO2. So it's far off from being carbon neutral. And we already have alternatives that are in the same ballpark as a nuclear power plant with that. Just that the fission also generates this additional nuclear waste that is a nightmare to deal with. And SMRs are less efficient than big nuclear power plants. So they'll be considerably less "clean" than for example regenerative energy. I'd say they're definitely not amongst the cleanest energy sources we have today. That'd be something like a hydroelectric power. However, it's way better than oil or natural gas or coal. At least if comparing CO2 emissions.
For over a century, the standard way we’ve been disposing of hazardous materials that can’t be easily recycled is to permanently bury it. We’re doing it with thousands of tonnes of hazardous materials daily.
A nuclear power plant only generates about 3 cubic meters of hazardous nuclear waste per year.
At the typical sizes we’re currently building them, you need 50-100 solar or wind farms to match the electricity output of a single nuclear reactor.
When we eventually dispose of the solar panels from those farms we literally end up with more toxic waste in heavy metals like cadmium than the nuclear power plant produced.
No solution is perfect.
But contrary to the propaganda, nuclear is one of our cleanest options.
Until 1994, one standard way of disposing of radioactive waste was throwing it into the ocean. There are at least 90.000 containers that got dumped along the shores of the USA alone. (Source: https://de.wikipedia.org/wiki/Altlasten_in_den_Meeren#Atomm%C3%BCllverklappung )
I'd agree that "No solution is perfect" qualifies for the history of nuclear energy.
The question is, why do we look at recycling solar panels, but compare that to nuclear and ignore that these have to be decomissioned and dismantled, too? And the whole process of mining uranium etc. While it may be true that the depleted uranium is low in volume, that's far from being the actual amount of waste in the end. You'd have to compare the entire lifecycle of the plant to the entire lifecycle of a solar panel. (And solar isn't the best option anyways.) Also who's paying for 40.000 years of storage of those 3 cubic meters? The power companies certainly aren't.
Are we though?
About 400,000 tonnes of used fuel has been discharged from reactors worldwide, but only about one-third has been reprocessed.
It definitely is amongst the cleanest energy sources we have today, especially when the choice for most is either oil, coal or nuclear, the choice is easy. Hydro, solar or wind are often not viable because of climate or location reasons. Not to mention that all of these need to be built using concrete, that is not unique to nuclear. Also important is that hydro electricity also dramatically alters the area, killing many animals and moving many species out of their home.
Btw, wind turbines aren't made of concrete, the towers are metal tubes. But the blades are problematic, since they're made from fiberglass. And solar panels aren't concrete either. While - if I drive past a nuclear power plant, those are really huge concrete structures. And the problematic things about hydro plants are the reservoirs. It's flooding a vast area to build a new reservoir and changing the flow in the river that destroys ecosystems. The plant itself isn't that bad. So ideally you build it into an existing flow of water or use tidal energy instead of building a new dam. I'm not an expert on north american geography, but I bet there are some opportunities left for power plants with a lesser impact on the ecosystem.
You don't need much concrete for wind, and only a single slab for the solar transformer.
The problem is the assumption that the datacenter must be running at 100% power 24/7
Until you get the bill, again.
There’s nothing clean about fission. It produces expensive poisonous waste that has to be stored for 1000 years. And in the US, no one wants it in their state, driving the price up further. And when you’re unlucky, you end up with superfund sites like Fukushima and Chernobyl.
It is very clean. The image below shows what 20 years worth of spent nuclear fuel looks like at the former Maine Yankee plant. This is way smaller than most supermarkets in north america, let alone their parking lots!
DOE was to have begun removing the spent nuclear fuel and GTCC Waste by January 31, 1998. To date, DOE has not removed any spent nuclear fuel or GTCC waste from the site, and it is unknown when it will.
You a highlighting a problem, not a solution.
To add to this, spent fuel is over 90% recyclable. If the US were to instate a comprehensive recycling program like France has done, the spent fuel cache could be reduced to negligible amounts.
Nuclear might be better than coal or fossil fuels, but it’s still dirty and expensive.
Spent fuel recycling costs a fortune. Only France is currently invested in it.
“In 1996 it estimated that reprocessing of existing used nuclear fuel could cost more than $100 billion.”
Most waste is stored in underground salt mines and requires special transportation, handling, and storage. That storage includes providing space between the spent rods to prevent interaction (you can’t just stack them compactly together). So while you may read that we produce half a swimming pool worth of waste, it takes a lot more space to store the spent rods than a “grocery store”. We produce about 2000 metric tons of spent rods per year. In addition, there’s all the other waste created when you run a nuclear plant — that includes garments and other materials. That adds up to “160,000 cubic feet (4,530 cubic meters) of radioactive material from its nuclear power plants annually”.
Disposing of spent rod storage casks costs $1 million per cask.
And then there’s the waste produced when decommissioning plants, or when plants go awry.
https://www.scientificamerican.com/article/nuclear-waste-lethal-trash-or-renewable-energy-source/
https://en.m.wikipedia.org/wiki/Waste_Isolation_Pilot_Plant
There’s a great video DW tv did on reprocessing and still having to store spent nuclear waste here:
https://youtu.be/hiAsmUjSmdI