Modern AI data centers consume enormous amounts of power, and it looks like they will get even more power-hungry in the coming years as companies like Google, Microsoft, Meta, and OpenAI strive towards artificial general intelligence (AGI). Oracle has already outlined plans to use nuclear power plants for its 1-gigawatt datacenters. It looks like Microsoft plans to do the same as it just inked a deal to restart a nuclear power plant to feed its data centers, reports Bloomberg.

142 points

Lol. I just love it how so many people complain that Nuclear doesnt make financial sense, and then the most financially motivated companies just actually figure out that using a nuclear reactor completely privately is best.

Fuck sake, world.

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46 points
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Microsoft jumped fully on the AI hype bandwagon with their partnership in OpenAI and their strategy of forcing GenAI down our throats. Instead of realizing that GenAI is not much more than a novel parlor trick that can’t really solve problems, they are now fully committing.

Microsoft invested $1 billion in OpenAI, and reactivating 3 Mile Island is estimated at $1.6 billion. And any return on these investments are not guaranteed. Generally, GenAI is failing to live up to its promises and there is hardly any GenAI use case that actually makes money.

This actually has the potential of greatly damaging Microsoft, so I wouldn’t say all their decisions are financially rational and sound.

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20 points

On the other hand, if they ever admit the whole genAI thing doesn’t work, they could just sell the electricity produced by the plant.

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9 points

if they ever admit the whole genAI thing doesn’t work

. . . The entire multi-billion-dollar hype train goes off the cliff. All the executives that backed it look like clowns, the layoffs come back to bite them - hard - and Microsoft wont recover for a decade.

I mean . . . a boy can dream

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4 points

My org’s Microsoft reps gave a demo of their upcoming copilot 365 stuff. It can summarize an email chain, use the transcript of a teams meeting to write a report, generate a PowerPoint of the key parts of that report, and write python code that generates charts and whatnot in excel. Assuming it works as advertised, this is going to be really big in offices. All of that would save a ton of time.

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9 points

Keep in mind that that was a demo to sell Copilot.

The issue that I’ve got with GenAI is that it has no expert knowledge in your field, knows nothing of your organization, your processes, your products or your problems. It might miss something important and it’s your responsibility to review the output. It also makes stuff up instead of admitting not knowing, gives you different answers for the same prompt, and forgets everything when you exhaust the context window.

So if I’ve got emails full of fluff it might work, but if you’ve got requirements from your client or some regulation you need to implement you’ll have to review the output. And then what’s the point?

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1 point
Deleted by creator
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3 points
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GenAI = Generative AI

AGI = Artificial General Intelligence

You are talking about the latter. They were talking about the former.

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31 points

Nuclear safety and penny-pinchers don’t make good bedfellows.

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13 points

Nuclear safety and penny-pinchers capitalism don’t make good bedfellows.

ftfy. Possibly ironically, nuclear safety and communism (or totalitarianism) don’t work either. It’s odd, innit.

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11 points

Pretty sure it has to do with how the plant is designed and operated as opposed to what economic or governmental system it happens to exist under.

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28 points

Honestly it seems crazy that companies that are so focused on short-term profits in 2024 would be able to make nuclear work.

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12 points

Every once in a while they get faced with a line on a chart somewhere so unbelievably vertical that they have no choice but to look beyond next quarter. Power consumption going 10x in 2 years is one of those times.

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9 points

It has been operated privately for a long time, unit 1 (this one) being operated by constellation energy. It stopped in 2019 because Methane had undercut it, and MS has now made an agreement to buy 100% of unit 1s output, but they aren’t buying the facility. Most power generation in the US is private, for better or worse (usually worse).

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7 points

I’m firmly in the “building new nuclear doesn’t make financial sense” camp, but I do think that extending the life of any existing nuclear plant does. Restarting a previously operational nuclear plant lies somewhere in between.

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11 points

I think when you start looking at how expensive other forms of green energy are (like wind) long term, nuclear looks really good. Short term, yeah it’s expensive, but we need long term solutions.

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4 points

I don’t think that math works out, even when looking over the entire 70+ year life cycle of a nuclear reactor. When it costs $35 billion to build two 1MW reactors, even if it will last 70 years, the construction cost being amortized over every year or every megawatt hour generated is still really expensive, especially when accounting for interest.

And it bakes in that huge cost irreversibly up front, so any future improvements will only make the existing plant less competitive. Wind and solar and geothermal and maybe even fusion will get cheaper over time, but a nuclear plant with most of its costs up front can’t. 70 years is a long time to commit to something.

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7 points

Have they solved the disposal questions?

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24 points

We haven’t solved the “disposal” question of using fossil fuels, and those turned out (or were known along) to cause much bigger problems.

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12 points

Like most things with environmental impact, we just let later generations deal with it. Somehow.

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12 points

Mostly, yes. Use breeder reactors to turn long term radioactive waste to sort term radioactive waste, store for short time and done. The downside: it’s more expensive to move and process the stuff so nobody wants to do that.

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1 point

How short is short-term?

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6 points
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Deleted by creator
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5 points

Relatively yes. There are disposal sites under construction that are in highly stable and environmentally safe locations. One good thing right now is that radioactive waste is temporarily easily stored. Transport of waste is an issue still, but far less of a problem than transporting oil and oil products.

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2 points

We have, but of course not to the satisfaction of anti-nuclear activists because solving it would be counter to their actual goals.

Nuclear waste is actually quite easy to deal with unless your purposes are best served by it being very difficult to deal with, in which case you make as much trouble as you can for it.

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1 point

Uh… Yeah. The reactor was in operation until 2019 when it stopped being profitable. Disposal was never a problem.

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4 points

The fact that they want to buy an old nuclear reactor instead of building a new one should be all you need to know to realise that it’s not financially viable.

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4 points

It’s not quite equivalent right? Using an existing plant is cheaper and faster than building a new one?

Its like saying a datacenter is not financially viable only because top brass decided to use a perfectly good existing one.

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1 point
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4 points
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No, that’s only because the US has constructed barriers to make it cost more and take longer, to protect conventional dirty energy. Those barriers do not need to be as large. A new reactor being built would take several years, and they don’t want to wait for that. That doesn’t mean it wouldn’t be profitable, although again the barriers may make it unprofitable or at least a riskier investment.

Edit: also, they aren’t buying this reactor. They are not in the energy business. They’re buying 100% of the output of unit 1. That’s all. The previous owners are still running it. It stopped temporarily in 2019 because Methane undercut it, because Methane does not have to pay for its pollution like nuclear does.

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1 point

Three Mile Island is the epitome of

conventional dirty energy

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2 points

I see this as a good thing because they’ll invest more on making energy efficient. That’s something bound to trickle down and help poorer regions unless they die off first.

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4 points

Yeah for sure it is cheaper, if they only have to pay the operational costs. Not the ones of building and decomissioning the plant. Lol.

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1 point

OP really thought they had something there.

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3 points

It doesn’t make financial sense to build new nuclear power plants. They’re hugely expensive and such projects routinely run well over time as well as budget. If it did make sense, Microsoft would be building them, instead of reviving the site of one of the worst nuclear disasters in the US. Thing is, they want lots of power, and they want it yesterday. By the time you can build a new nuclear plant to satisfy these needs, AI will have run its course and big tech will be on to the next scam.

But hey, why pay attention to such nuances?

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78 points

Personally? I don’t think this is a bad idea. The less they drain from the grid, the less they consume fossil fuel.

The reactor isn’t active right now, and they are a PWR design, and like the 1979 incident showed, they do fail safely.

So long as Microsoft pays for the operation of the plant? Seems reasonable to me if they’re going to consume an assload of energy with or without public support.

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36 points

we could use that extra energy to offset a bunch of existing carbon emissions now. This is still waste. If it’s going to be started up again, and its energy used for something useless, it’s waste.

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27 points

Microsoft would do it with or without the power plant. Make no mistake about that.

The same argument could be said if they made a 1GW solar farm, or any other form of power generation. Unless you have a way to legislatively prevent Microsoft from producing their own energy or prevent acquisition of decommissioned plants, I don’t see how you can prevent waste.

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18 points

That argument presupposes that the reactor would otherwise be brought back into operation, which I don’t think is necessarily the case.

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12 points

Is it going to be started up again?

If M$ doesn’t invest into this for their own purposes, is it still going to be started up? Or is your position that M$ should be investing in a nuclear power plant for the good of the world?

Because while I can agree with the idea, we all know that would never happen. So if it was never going to be started up again, we are at 0 gain or loss no matter what they do with it.

And that’s ignoring the fact that they are apparently intending on using that energy anyway.

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2 points
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it would be a missed opportunity in the sense of “if they can allow it to be turned it back on to waste its power on this dead-end tech, why couldn’t it have been allowed to operate again (earlier) for reasons we actually need?”

I’m not putting the blame on microsoft here, even though it might seem that way. But it’s not microsoft who need to give the go-ahead for this to happen. It’s the higher ups who decided to give the capacity to microsoft.

Yes it was still going to be used, but they could have been paying out the ass for it, which could fund other projects.

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2 points

If it also shifts their current load off the existing grid, that might be beneficial.

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28 points

I remember I had to do the 3 mile Island incident as part of my university degree. Apparently one of the biggest problems was that the control interface was hard to understand for the human operators.

So I guess if they just replaced the control system with a modern computer that would fix most of the problems. Obviously not a Windows system, otherwise we’ve just got the same issue all over again.

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9 points

It was the SCADA view right? A lot of SCADA software is basically running on top of windows, though you typically would never see the desktop. Ignition at least is cross platform, but that is because the server is Java and Jython. A big part of why things are running on windows is due to OPC, which was traditionally all DOM and .NET. It is basically a standard communications protocol and is what allows your HMI/SCADA to communicate with PLCs. Otherwise, you use proprietary drivers and native PLC specific protocols.

SCADA programming/design is kind of an art and is usually written by an either an overworked engineer or someone who had far too much time on their hands. You basically build screens using specialized software, hook up buttons and UI elements to PLC signals, and pass some signals from the UI to the PLC. They are all heading in the Edge/iot/cloud/web based/techno-babble direction these days…

Ignition, programming software is free!: https://inductiveautomation.com

Some other random ones I have seen or used in the past: https://www.siemens.com/global/en/products/automation/simatic-hmi/wincc-unified.html https://www.aveva.com/en/products/intouch-hmi/ https://www.rockwellautomation.com/en-us/products/software/factorytalk/operationsuite/view.html

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7 points

“is usually written by an over worked engineer”

I’m in this post and I don’t like it.

But really these scada systems are rarely well defined by the time implementation happens. Often the architect has a great plan, but by the time it’s passed to a manager, a non-software engineer, to the product engineer to the automation team to the contractor the end result is “X data is pushed in With Y form and we use either a,b,or c date time stamp any nobody knows”

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7 points

It continued operating for decades after the event. I’m sure they already solved that issue. It can still be improved I’m sure though.

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6 points
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So I guess if they just replaced the control system with a modern computer that would fix most of the problems

Introducing new Clippy For Reactors.

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5 points

“It looks like you are trying to prevent a nuclear meltdown. I can help with that.”

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45 points

Are we eventually gonna get more fusion because billionaires are demanding more energy for their stupid projects?

Sure, knock yourselves out.

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13 points

Are we eventually gonna get more fusion […]

Either you mean fission, or the “more” could be omitted.

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4 points

Most likely more fossil fuels because they’re faster and cheaper to roll out.

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2 points

This is how I’m able to sleep without worrying about death, one of these billionaires has got to be funding research so they can live forever. No guarantee they’ll share but that’s at least a less dread inducing issue.

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-1 points

Yeah, too bad there’s no long-term storage for the waste so it will mean more and more leaks polluting land for centuries since the power companies will just go bankrupt when it’s time to do anything about it like with most forms of pollution.

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4 points

The amount of waste is tiny. Coal plants cause more radiation than nuclear plants because of tiny amounts of radioactive matter in coal. You need to burn so much coal the amount of radioactivity is higher per unit of energy.

Until we shut down all coal plants we shouldn’t even think about closing nuclear plants

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2 points
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That’s for normal activity and it’s totally irrelevant. So these are some stats about ionizing radiation dosages:

  • Average from all sources for an average person for 1 year: 4mSv
  • Additional if living within 50 miles of a nuclear reactor for 1 year: 0.09 µSv
  • Additional of living within 50 miles of a coal plant for 1 year: 0.3 µSv
  • Living within 30 km of Chernobyl before evacuation (10 days): 3-150 mSv
  • Maximum allowed dose for radiation workers over 1 year: 50mSv
  • 10 minutes next to the Chernobyl reactor after the meltdown: 50Sv
  • fatal lifetime dosage beyond our ability to treat: ~8Sv

So, yes, nuclear power plants and storage pools are designed to shield radiation and thus during normal operation release an insignificant amount of radiation so much so that even coal burning releases a heck of a lot more.

But both of those are extremely insignificant if you consider that living near a coal plant will only give you a tiny fraction of additional exposure as the amount of radiation you receive normally from natural sources.

The problem is that with nuclear fission waste, a tiny leak can cause fatal amounts of exposure in a very short time. If a storage pool cracks after the 100 years or so they’re designed to last, or if a flood happens and overflows a storage pool, or a tornado picks up that storage water, or any number of other catastrophic events happen within the 10,000-1,000,000 years before that waste is safe, depending on the type, the people living nearby will likely not survive very long and that area will be contaminated for many times longer than human life has existed.

Fukushima was a good example and had to rely on the vast Pacific ocean to disperse the radiation. Chernobyl will be unsafe for 10s of thousands of years even if the coffin is maintained for all that time.

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41 points

I’m sure that everyone will recognize that this was a great idea in a couple of years when generative LLM AI goes the way of the NFT.

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39 points

Honestly, it probably is a great idea regardless. The plant operated for a very long time profitably. I’m sure it can again with some maintenance and upgrades. People only know three mile island for the (not so disastrous) disaster, but the rest of the plant operated for decades after without any issues.

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15 points

with some maintenance and upgrades.

Hopefully we can trust these tech bros to do that properly and without using their usual “move fast and break things” approach.

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18 points

They are only buying 100% of the output. The old owners are still owning and operating it.

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2 points

And if they do skimp on maintenance and upgrades and the plant melts down, we can be assured that no harm will come to the company because the scale of the disaster would wipe them out and they’re “too big to fail.”

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5 points

It’s one of a hell of an old nuclear plant if it’s the original three mile island one.

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7 points

It is, yeah. It was in operation until 2019.

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8 points

Once operational, the energy generated is cheap and will still be in demand

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7 points

LLMs have real uses, even if they’re being overhyped right now. Even if they do fail, though, more nuclear power is a great outcome

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6 points
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Nfts were a scam from the start something that has no actual purpose utility or value being given value through hype.

Generative AI is very different. In my honest opinion you have to have your head in the sand if you don’t believe that AI is only going to incrementally improve and expand in capabilities. Just like it has year over year for the last 5 to 10 years. And just like for the last decade it continues to solve more and more real-world problems in increasingly effective manners.

It isn’t just constrained to llms either.

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7 points

The creators who made the LLM boom said they cannot improve it any more with the current technique due to diminishing returns.

It’s worthless in its current state.

Should be dying out faster imo.

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4 points
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One of the major problems with LLMs is it’s a “boom”. People are rightfully soured on them as a concept because jackasses trying to make money lie about their capabilities and utility – never mind the ethics of obtaining the datasets used to train them.

They’re absolutely limited, flawed, and there are better solutions for most problems … but beyond the bullshit LLMs are a useful tool for some problems and they’re not going away.

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2 points

That’s one groups opinion, we still see improving LLMs I’m sure they will continue to improve and be adapted for whatever future use we need them. I mean I personally find them great in their current state for what I use them for

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-1 points

There are always new techniques and improvements. If you look at the current state, we haven’t even had a slowdown

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1 point

I suspect you’re right. But there really is never a good way to tell with these kinds of experimental techs. It could be a runaway chain of improvement. Or it is probably even odds that there is a visible and clear decline before it peters out, or just suddenly slams into a beick wall with no warning.

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35 points

Holy sunk cost fallacy, batman. How fucking much does it cost to operate an ENTIRE GODDAMN NUCLEAR REACTOR just to fuel a tech project that nobody wants???

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32 points

Investors want it, because they want to ride the wave towards profit. It doesn’t matter if it’s good, sustainable or not. That is what matters.

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2 points

A tax break for “clean energy”, “strategic investment corridor” or “self-poweting companies” to reduce the load on the grid (that a few enormous companies like MS are creating) will be written into law, if it isn’t already, and it will be a complete tax write-off or something so they get to reap any rewards and when AI hype dies down they’ll still have increased profits by reducing taxes. When you win/win by owning the system you just win.

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20 points

that nobody wants

lol

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12 points

A lot of the cost is building a giant centralized nuclear facility. Once they are built it is not nearly as expensive to run them.

I think this is generally a good thing. Companies should be thinking of ways to supply their power needs.

Having said that, people want a good AI. The LLMs they are working on are probably not that. I am very skeptical we are anywhere close to where the hype train has taken us

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3 points
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Just because you don’t want it doesn’t mean others don’t.

And just because you don’t know much about the actual tech product itself doesn’t mean that it’s as narrow as you consider it to be.

There is a ton of vapid hype that everyone including myself is getting sick and tired of. I’m more than happy to recognize that. However, there are still real world problems and continued advancements being made daily.

It’s not all about LLMs either, there are many other types of science being done to develop improve and augment various other flavors of artificial intelligence. This has been a pretty constant trend for at least the last 10 years, we’ve just had a recent explosion in language capabilities with the introduction of generative AI. Thus fueling the hype.

That’s a really weird stance that I keep seeing on here which is to be proud of being ignorant. Being proud of hating something without actually understanding what it is. Being proud of not knowing how something works so that you can be more contrare.

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