Transcript of Why Microsoft Wants Three Mile Island's Nuclear Power

In 1979, a nuclear power plant on 3 Mile Island, which is about 100 miles west of Philadelphia, had a major accident.

The government official said that a breakdown in an atomic power plant in Pennsylvania today is probably the worst nuclear reactor accident to date.

I heard a very loud noise that sounded a huge release of steam. One of the reactors at 3 Mile Island overheated and partially melted down. A cooling pump broke down, and the plant did just what it was supposed to do, shut itself off. But not before some radioactivity had escaped. Heat and pressure built up, and some radioactive steam escaped into the building housing the reactor, and eventually out into the plant and the air.

Certain people have been advised to evacuate. Others have been urge to remain indoors.

Telephone lines in the Harrisburg area are jammed, and immediate highways are, too, as more people decide to leave. No one died, and it turned out only a small amount of radiation was released. The exposure for two million people was less than that of a chest X-ray. But the disaster had a lasting impact on the American psyche.

I think one of the big ramifications was just that there was a loss of confidence in the nuclear power industry industry.

That's our colleague Jennifer Hiller, who covers energy.

People just became maybe more aware of the problems or more fearful of the potential downside and the upshot over a long period of time was that nuclear power plant construction in the US really slowed down in the '80s and '90s. We really aren't building plants today. Three Mile Island is one of the reasons why.

After the accident, one of Three Mile Island's reactors actually kept running for 40 years. But in 2019, the plant closed seemingly for good. But now, an unlikely suitor wants to reopen 3 Mile Island. The tech giant Microsoft.

I think it's a wild story. It's something that really you wouldn't have seen coming. Microsoft is in search of so much power and so much clean power that it is willing willing to go to Three Mile Island, the site of our worst commercial nuclear accident in the US.

Welcome to The Journal, our show about money, business, and power. I'm Ryan Knutson. It's Friday, October fourth. Coming up on the show, Why Microsoft Wants to Turn Three Mile Island Back On.

Courage. I learned it from my adoptive mom.

Hold my hand.

You hold my hand.

Learn about Adopting a Team from Foster Care at adoptuskids. Org. You can't imagine the reward. Brought to you by AdoptUS Kids, the US Department of Health and Human Services, and the Ad Council. You might think that US electricity consumption has gone up over the past few decades as we've used more and more devices. But for most of that time, that wasn't true. A more efficient grid and greener designs have kept electricity use relatively flat. But all that changed about two years ago when there was a sudden surge in electricity demand, thanks in large part to a new technology.

I would say starting in In late 2022, early 2023, everybody really started talking about generative AI. Generative AI uses a lot more power than a regular Google search. It requires a lot of energy. The tech industry realized essentially that it was on the cusp of this new boom that it compares to being the next Internet. Something that's very important for the US economy. They argue that it's important for global security and the US position in the world as well. The tech industry started making really big strides in generative AI.

Generative artificial intelligence, stuff like ChatGPT, requires a lot of energy. Asking ChatGPT a question can use up to 10 times more power than doing a Google search. How much energy does one data data center consume?

It really varies. You can have smaller data centers that might be 10 or 20 megawatts. That would have been a normal data center until not too long ago. But some of the newer data centers are consuming hundreds of megawatts.

How much is a megawatt?

So a megawatt is roughly a big box retailer, and a megawatt is about what they're drawing at any given time. I see. Yeah. So a gigawatt, if you have a gigawatt- Is a thousand Walmarts. Yeah, that's a thousand Walmarts. It's about like San Francisco. So you can have- Wait, San Francisco is a gigawatt?

Is a thousand Walmarts?

Exactly.

Exactly. Wait, it's possible that some of these new data centers use up as much electricity as San Francisco as an entire city?

Yes.

Holy smokes. I'm not allowed to swear in this show, but wow, that is That's enormous.

Yeah. So you see the problem. This is a lot of power, and we have a lot of power in the US. A lot of times, most of the time, we have excess power because the system is designed to have a lot of wiggle room. But we have new factories being built. We have chip factories. We have electric vehicles coming into the system, including big fleets that use a lot of power. So there are other big new users of the grid, but there are lots of projects that are asking for many hundreds of megawatts. So it's complicated.

Making things more complicated is the fact that these tech companies have set stringent climate goals, meaning that they don't want to power these data centers by buying carbon-heavy sources like natural gas and coal. They want their power to be clean. Microsoft, a major investor in OpenAI, the company behind ChatGPT, has pledged not only to be carbon-neutral by 2030, but carbon-negative. Here's Microsoft CEO Satya Nadella in 2020. We must take responsibility to address the carbon footprint of our own technology and company, but we will also go beyond that. By 2050, we will remove from the environment all of the carbon we have emitted directly or by electrical consumptions since our company's founding in 1975. For recent disclosures from the company show, its climate metrics are moving in the wrong direction. Microsoft reported that its emissions were up 30% over the previous three years.

Microsoft and the other tech companies have been making progress on their climate goals, but that has reversed in the face of AI, and they're backsliding a little bit because they're in this huge growth period, and they're needing to use more electricity, and they're also needing to build a lot of data centers and buy things like steel and concrete to build those data centers. That's really being driven by this AI boom.

Microsoft is already partially powering its data centers with clean energy generated from solar and wind farms. But wind and solar don't provide constant energy.

These data centers are online all the time. They basically are not flexible. They are using power 24/7.

People are asking ChatGPT for a late-night pizza recipe at 11:00 PM when sun's not shining and it might not be windy out.

Exactly. If you're doing that activity 24/7 and you're not a flexible resource on the grid, you're not able to maybe dial down your use the way that a household might be able to or that a manufacturing facility may be able to. You need to be on all the time.

That's why companies like Microsoft are more and more interested in nuclear energy.

The promise of nuclear energy is that it can deliver baseload power, so a very steady and reliable source of power 24/7, and that it can do it in a carbon-free way, basically Basically, the big stacks that you see at a nuclear power plant are releasing steam. So it's just water that gets released from a plant. There's no carbon dioxide. And so the promise of nuclear is that you can produce a lot of reliable clean power. But the concern about nuclear is that you have radioactive waste that we don't have a great solution for in the US. Currently, we just store everything on site under what are turning out to be very long term arrangements. People have safety concerns around nuclear power.

Is nuclear a more cost effective source of energy?

No, it's expensive. There's a lot of people who think it could be cheap or say that it's cheap when a whole bunch of other factors are considered. But it's a more expensive plant to operate. You need more people on site, and they have higher regulatory costs. But there's a lot of advocates of nuclear power who would say that that expense is worth it when you look at the climate benefits and the reliability benefits, and that we're going to have to pay for those one way or another. So you're going to need nuclear to be part of the reliability and climate solution.

But rebooting a power plant is a lot more complicated than a Microsoft Windows update. That's next. If you're a tech company that wants nuclear energy, there aren't a lot of great options for getting it. Building new plants is extremely expensive and time consuming. There's new, smaller reactors that might be able to sit next to a data center, but that's still pretty far off from being scalable in the US. The quickest thing to do is reopen an old decommissioned plant. Let's talk now about Three Mile Island. Introduce us to this deal that just got announced.

This deal is between Microsoft and Constellation. Constellation Energy owns Three Mile Island. And about 20 months ago, they started looking at what it would take technically to bring Three Mile Island back. So this deal is a power purchase agreement between Constellation and Microsoft.

In the 20-year power deal, Constellation Energy will revive and run the undamaged reactor from Three Mile Island and sell that power to Microsoft. So is Is Microsoft going to build a data center right near Three Mile Island and plug it in to the nuclear power plant? How does that work exactly?

It's not going to be directly adjacent or receiving power directly from Three Mile Island, but they will have data centers in the region.

Okay, so it's just like, we're going to pay to put this power into the grid, and then that will balance itself out as it moves around the networks in the US.

Exactly. When you're pulling power from the grid, you never know exactly what you're using. You can assume that you're using the mix of whatever's on there because electrons just flow. But yeah, they will be paying for that clean power to be delivered.

Microsoft's vice President of Energy called the agreement, A major milestone in Microsoft's efforts to help decarbonize recognize the grid. For Constellation, the deal is a huge win. The company's stock jumped 22% the day of the announcement. Here's Constellation CEO talking about the new partnership at a conference last week. Nuclear energy is like peanut butter and jelly with the AI needs for power. We have facilities that, likewise, were always designed to run 24/7, and so it's a good matchup. Microsoft has been focused on that matching because they want to have energy that's produced at the same time they use it. The company says it will take four years and cost $1.6 billion to reopen the plant, and it will change its name from 3 Mile Island to the Crane Clean Energy Center. Why is it going to take until 2028 to reopen this plant if it only shut down five years ago or so? Can't you just go back in there and Homer Simpson flipped the switches back on?

Homer Simpson is the nuclear industry's favorite fictional character. Nuclear.

It's pronounced nuclear. I suspect that the nuclear industry does not like Homer Simpson.

They're not a fan. The Department of Energy has pages even dedicated to Busting Simpson Smiths myths. There's no green goo.

Who would have thought a nuclear reactor would be so complicated?

But you were asking about what they need.

Why is it going to take four years to turn this nuclear plant back on?

Well, everything that you do at a nuclear power plant, you have to be, of course, really careful with. You're going to have to go through the Nuclear Regulatory Commission, which is a pretty stringent regulatory body that oversees that industry.

What about the risk for the people that live around these nuclear power plants? For the people that live around Three Mile Island, is there a chance that there could be another Three Mile Island disaster?

I mean, I don't know that you can ever eliminate all of the risk factors. I think there's always going to be risk that something could go wrong. People operate these plants. Human error is a thing. You can have mechanical or other failures at plants. But certainly, we haven't had another three-mile island in the US, and a lot of people consider this to be a really safe form of power. They've got a really stringent regulator that oversees them, often considered the most stringent regulator in the world.

Is this the return of nuclear in the US? Or is this just maybe a stop-gap solution for the tech industry as they transition to other technologies?

That's a really good question. I think it's hard to say for certain. It's definitely something of a turnaround for the nuclear power industry. This is not the project that we would have imagined even three years ago. It would have been impossible to imagine that there was a customer willing to pay to bring a nuclear plant a lot of decommissioning. But I think in terms of how much can this industry grow, I think that's just a big question because wind and solar is being added so quickly. You could have advances in battery technology. I think there's a question about exactly how much market share nuclear will be able to take and how quickly they would be able to do that.

What's your takeaway from this new arrangement of odd bedfellows, Microsoft and Three Mile Island?

I think it just speaks to what the power demand is going to be and the links that people would be willing to go to secure that power power. The demand coming from the tech industry so far appears to be insatiable, and that we're going to need more forms of power generation coming online in the coming years to be able to meet that.

That's all for today. Friday, October fourth. The Journal is a coproduction of Spotify and the Wall Street Journal. The show is made by Katherine Brewer, Maria Byrne, Jonathan Davis, Pia Guedkari, Rachel Humphreys, Matt Kwong, Kate Lineba, Jessica Mendoza, Annie Minoff, Laura Morris, Enrique Perez De La Rosa, Sarah Platt, Alan Rodriguez Espinosa, Heather Rogers, Pierre Singhi, Jivika Verma, Lisa Wang, Katherine Whalen, Tatiana Zamis, and me, Ryan Knutszen, with help from Trina Menino. This is Maria's last week with us on The Journal. Maria, you rock. We're going to miss you so much. Our engineers are Griffin Tanner, Nathan Singapock, and Peter Leonard. Our theme music is by So Wiley. Additional music this week from Katherine Anderson, Peter Leonard, Billy Libby, Nathan Singapock, Griffin Tanner, So Wily, and Blue Dot Sessions. Fact checking by Kate Galliger and Najma Jamal. Thanks for listening. See you Monday. Have you ever been to Three Mile Island?

I have not.

Me neither. I have not heard great things.

It's maybe not the biggest tourist destination.